Appendix: A list of common abbreviations

AAI Absolute acoustic impedance LPG Liquified petroleum gas AI Acoustic impedance LST Lowstand system tract °API Oil gravity, American Petroleum Institute LWD Logging while drilling degrees LSW Lowstand wedge AFTA Apatite fission track analysis Ma million years AST Aggradational system tract mBRT Metres below rotary table AVO Amplitude versus offset (amplitude variation mD millidarcies with offset) mfs maximum flooding surface BBL Barrel MORB Mid-ocean ridge basalt BCPD Barrels of condensate per day MRIL Magnetic resonance imaging log BGS British Geological Survey ms milliseconds BHT Bottom hole temperature N: G (NG) Net to gross BIRPS British Institutions Reflection Profiling NGL Natural gas liquids Syndicate NMO Normal move out BKB Below Kelly bushing NMR Nuclear magnetic resonance BMSL Below mean sea-level NOCS Norwegian Continental Shelf BOPD Barrels of oil per day NPD Norwegian Petroleum Directorate BOE Barrels of oil equivalent NNS Northern North Sea BRT Below rotary table OBC Ocean bottom cable BWPD Barrels of water per day OBS Ocean bottom seismograph CDR Common depth ratio ODP Ocean Drilling Program CMP Common mid point ODT Oil-down-to CNS Central North Sea OMF Outer Moray Firth COG Common offset gather owe Oil water contact CRG Common receiver gather PCA Principal component analysis CSG Common slowness gather PBU Pressure build-up CSIA Compound specific isotope analysis PSDM Pre-stack depth migration ,5,3C Ratio of carbon-13 isotope to carbon-12 isotope psi Pounds per square inch measured in a sample relative to a standard PVT Pressure, volume, temperature <515N Ratio of nitrogen-15 isotope to nitrogen-14 RFT Repeat formation test isotope measured in a sample relative to a Ro Vitrinite reflectance measured using oil standard immersion objectives ,8 <5 0 Ratio of oxygen-18 isotope to oxyge-16 isotope ra Resistivity (oil) measured in a sample relative to a standard RSA Residual salt analysis DHI Direct hydrocarbon indicator Rw Resistivity (water) DMO Dip move out s, Yield during (RockEval) pyrolysis of DSDP Deep Sea Drilling Project petroleum-like material contained in sample DST Drill stem test Maximum petroleum yield from kerogen of s2 DTI UK Department of Trade and industry sample released during (RockEval) pyrolysis ERD Extended reach drilling of petroleum EWT Extended well test SB Sequence boundary FIT Formation interval test SCF Standard cubic feet FSB Faeroe-Shetland Basin SEM Scanning electron microscope FTSS Feet, subsea Sm3 Standard cubic metres GC Gas chromatography SNS Southern North Sea GC-MS Gas chromatography mass spectrometry SrRSA Strontium isotope residual salt analysis GEUS Geological Survey of Denmark and Greenland ss Subsea GIIP Gas initially in place STB Stock tank barrel GOC Gas-oil contact STOIIP Oil initially in place

GOR Gas-oil ratio ow Water saturation GRV Gross rock volume ^wirr Irreducible water saturation GWC Gas-water contact TD Total depth HDIL High definition induction log TDS Total dissolved solids HI Hydrogen index TOC Total organic carbon HP/HT High pressure/high temperature TSR Thermal sulphate reduction HST Highstand system tract TST Transgressive system tract HWC Hydrocarbon-water contact TVD True vertical depth IMF Inner Moray Firth TVDSS True vertical depth, subsea IOR Improved oil recovery TWT two-way time KCF Kimmeridge Clay Formation UKCS United Kingdom Continental Shelf Kh Horizontal permeability VCS Vertical cable seismic Kv Vertical permeability P-(compressional) wave velocity vv XVI APPENDIX: A LIST OF COMMON ABBREVIATIONS

VR Vitrinite reflectance WAG Water-alternating-gas (oil recovery technique) Vs S-(shear) wave velocity WUT Water-up-to VSP Vertical seismic profile XRD X-ray diffraction Index Page numbers in bold refer to tables and page numbers in italics refer to figures

Acadian orogeny 512 Cretaceous extension 49-51 Barra Fan 42 acoustic impedance (AI) 1047-1048 Eocene inversion 52-53 Barra Volcanic Complex 579 Adolphus Field 474 Jurassic uplift 47-49 Barra Volcanic Ridge 42 Aegean Sea, as structural model 147, 148 Neogene rifting 53-56 basalt Aegir Ridge 42 Paleocene magmatism 51-52 seismic imaging problems 1243 aeromagnetic data see magnetic data Permo-Triassic extension 46-47 relation to Iceland plume 1250-1251 AFTA see apatite fission track analysis thermal history reconstruction wide angle data Aghardfjellet Formation 252 methods 349-350 acquisition 1245-1246 AI (acoustic impedance) 1047-1048 results 351-354 interpretation 1247-1248 Albuskjell Field 912, 913 Atlantic Ocean (North) 1250 processing 1246-1247 Alder fan 854 Caledonian setting 8-11 Base Cretaceous Event (BCE) 829, 830, 831 Alexis Formation 510 Carboniferous setting 15-18 Base Cretaceous unconformity (BCU) Alleghenian orogeny 512, 513 Cretaceous setting 31-33 1014 Alpha Field 912 Devonian setting 12-15 basement Alpha Ridge 172, 174, 250 Jurassic setting 20-29 gravity anomaly 602 Alpine orogeny 137, 146, 915 Permian setting 19-20 highs and heat flow 1316 aluminium seafloor spreading 8 basin modelling export 1345-1347 Tertiary setting 33-35 charge model 1323-1324 mobilization 1340-1341 Auk Field 474 history of 1314-1315 amplitude studies, seismic resolution Auk Horst 75 pressure model 1320-1323 enhancement 1047 Avalon Formation 504, 506, 518 Rockall Trough 428-430 amplitude versus offset see AVO Avalon Uplift 492 thermal model 1317-1318 Amroth, sediment log 776 AVO basinal facies, NE Greenland 331, 333 analogue modelling A + B sections 1291 Bean Basin 410-411 strike-slip fault system A v. B crossplot 1291 Beatrice Field 474 method 216-217 case studies Ben Nevis Formation 504, 506, 518 results 217-220 Barents Sea 1295-1297 Beothuk Field 474, 475 results discussed 221-224 Brent Field 1047 Bernard parameter 802 Andrew tuff 651, 655 chalk 928, 943-944 Beryl Embayment 127 Anguille Group 513 Greenland West 1292-1295 seismic inversion Anticosti Basin 511-513 Tor Formation 945-947 method 1282-1284 Anton Dohrn Lineament 408 West Shetland modelling results 1284-1285 Anton Dohrn Seamount 42, 392, 401, 579, anisotropy 639-641 results discussed 1285-1287 586 conventional model compared 641 stratigraphy 1281-1282 Anton Dohrn Transfer 42, 46 pre-drill model 635-636 structure 1282 apatite fission track analysis (AFTA) walkaway vertical seismic profile Beryl Field 1187 349-350 638-639 Beryl Formation reservoir 1188-1189 Faeroe-Shetland Basin 588 well data 636-638 cross Field correlation 1192-1195 method 614-615 effect on well ties 1265, 1270 depositional model 1195-1197 North Atlantic margin studies 351-354 theory 1289-1290 engineering properties 1192 results 616-619 Aylesbeare Group 1157 facies analysis 1191-1192 Appalachian Basin, Namurian stratigraphy sedimentology 1189-1191 760-763 Beryl Formation 1053, 1054, 1281 Arbroath Field 1125, 1128, 1129 back basin problem see Strathmore Field also Beta North East Terrace 868 Are Formation 1209, 1210, 1213 Solan Field beta stretching facies analysis 1214 Bacton Group 203, 1300 Atlantic margin 1351 reservoir geometry modelling 1211-1216 Baikalian orogeny 248 Rockall Trough 429 Arenicolites 1034 Bakevellia Basin 204 Billefjorden Fault Zone 42 Argo Formation 504, 520 Balder Formation 1369, 1370 biomarkers, marine v. non-marine 480-483 Argyll Field 474 Balder Graben 386 biostratigraphy, chalk 916-917 Arkwright Field Balder tuff 650 BIRPS Westline 374, 410 coherency study 1302-1304 Banff Field 975 Biscay, Bay of 8 development 1128-1133 reservoir properties Bivrost Lineament 42 discovery 1125-1126 characterization 980-982 Bjarni Formation 510 reservoir characteristics 1126 development 979-980 Bjornoya Basin 42 volumetric predictions 1126-1128 fracturing 984-985 Bjornoya Fan 42 well testing 1126 lithofacies 984 Black Cove Formation 512 Asterosoma 1191, 1213 modelling development 986-987 Blackstones 581 Atlantic margin performance 980 Blodoks Formation 915, 919 basin modelling 1357-1359 stratigraphy 982 Boat Harbour Formation 513 hydrocarbon expulsion and migration seismic image 978-979 Bosies Bank Formation 179 1360-1361 structural development 977-978 Boss Point Formation 765 hydrocarbon maturation 1360 Banks Group 93, 103, 1235 Bothnian Senja Shear Zone 42 large igneous province (LIP) Barachois Group 513 Bothnian-Kvaenangen Fault Complex 42 flood basalts 574-578 Barents Sea (Norwegian Sector) 247 Bothnian-Senja Shear Zone 46 Iceland plume 573 margin areas Bouguer gravity sediment sill complexes 578-579 reservoirs and traps 256-257 Erris Trough 458 source rocks 1354-1357 source rocks 255-256 Faeroe-Shetland Basin 601-602 tectonic evolution 1351-1354 structure 254-255 Intra-Basin 602-603 volcaniclastics 581 platform areas Slyne Trough 450, 451 volcano complexes 579-581 evolution 249-250 see also gravity post-Triassic development 231-232 reservoirs and traps 252-254 Bowland Shale Formation 813 prospectivity 227-228 source rocks 250-252 Brae Field 1347 tectonic events structure 248-249 Brae Formation 855, 1200 Caledonian 42-46 see also Hammerfest Basin Brendan Complex 579 XV111 INDEX

Brent Field 92-93, 1039-1040, 1235 Faeroe-Shetland Basin 661 Chanter Field 854, 865 development 1040-1041 Newfoundland West 514 charge modelling 1323-1324 fault scarp case study Southern Permian Basin 800 Charlie Gibbs Fracture Zone 392 degradation products 97-102 sediments Cheshire Basin 475 external geometry 95-96 Irish Rockall Trough 434-435 Chondrites 966, 968, 1142, 1191, 1213 internal structure 96-97 Slyne Trough 447 chromatograms, Jurassic oils 651 reservoir potential 103-104 source rocks chronostratigraphy v. lithostratigraphy scarp evolution 102-103 Barents Sea 250 156-157 slope failure 102 East Irish Sea Basin 1384 Cimmerian unconformity 136 full field simulation model Erris Trough 463-464 Cimmerian uplift, East Irish Sea Basin applications 1043-1045 Newfoundland West 513 1387-1390 inputs 1041-1043 Southern Permian Basin 798-800 Clair Basin 602 hydrocarbon potential 94 tectonics and palaeogeography Clair Field 645, 693, 722 reservoir characterisation 1048-1049 North Atlantic 12, 15-18 Clair Group 661, 1369 reservoirs 93 West of Shetland 647 Clair Ridge 602 seismic survey 1045-1047 see also Dinantian; Namurian; Westphalian Clare Basin 765, 778 resolution enhancement 1047-1048 Carson-Bonnition Basin 501 Claymore Fan 852-853 structure 93-94 Cartwright Formation 510, 511 Claymore Field 851 Brent Group 93, 474, 830, 1039, 1040, 1063, Catoche Formation 513 Clyde Sands 1094 1064-1066, 1177, 1235 cementation 1223-1224 Codroy Group 513 reservoir model 1043 Central Graben 42, 474, 475 Coffee-Soil Fault 897 Bridport Sandstone Formation 474 gravity gliding 201 coherency Britannia Field chalk study 1222-1223 case studies history 1115 diagenesis and cementation 1223-1224 Arkwright Field 1302-1304 modelling fractures 1224-1225 Jaeren High 1304-1305 facies heterogeneity 1120-1122 hydrocarbon emplacement 1225-1226 Leman Field 1299-1302 well type impact 1122-1123 overpressure 1341-1342 as a tool 1299 reservoir properties 1115-1116 pop-up and pull-apart structures 223 coiled tubing side tracking 1070 facies analysis 1116-1117 structure 207-210 Commodore Formation 664, 671 stratigraphy 1117-1119 see also Arkwright Field; Banff Field; chalk concurrency 1070 Broadford Beds Formation 446 exploration project; Eastern Trough Connemara Field 242, 474, 475 Brockelschiefer 1300 Area Project (ETAP); Elgin Field; Conona Ridge 602 Bronnoysund Basin 42 Frankin Field; Fulmar Field; Greater constant offset profiling 1245 Broom Formation 93, 103, 1043, 1064, 1177 Shearwater area; Norwegian Central Conybeare Group 577 Buchan fans 855 Graben; Shearwater prospect Cook Formation 1177 Buchan Field 474 Central North Sea Trough 64-66 Cormorant Group 1053, 1063, 1066 Caledonian features 68 Corona Ridge 533, 543, 1377 13C see carbon isotopes evolution model 75-80 Cow Head Formation 512 Caister Coal Formation 809, 811, 813, 816 Jurassic facies 68-75 Cretaceous Caister Field 725, 800 salt tectonics 66-68 compression, Witch Ground Graben 137 calcite structures 66 facies analysis cementation in chalk 1223-1224 chalk Kangerlussuaq Basin 339, 340-342 in fluid inclusion analysis 620-621, 622-623 Central Graben study 1222-1223 NE Greenland 329-333 Calder Field 1383 diagenesis and cementation 1223-1224 migration, Norwegian Central Graben Caledonian orogeny and structures 248, 601 fractures 1224-1225 1336-1338 Atlantic margin 8-11, 42-46 hydrocarbon emplacement 1225-1226 palaeogeography Central North Sea Trough 68, 79 exploration risks 1221-1222, 1226-1230 Irish Rockall Trough 436 Irish Rockall Trough 434, 438 first drilled in North Sea 907 Norwegian Sea 267-268 Witch Ground Graben 135 fluid effects on rock physics 944-945 palaeotemperature analysis, Rona Ridge 679 Cambro-Ordovician seeps, Anticosti basin 511 petrology 940 plate tectonic modelling, Rockall Trough Canada see Maritime Basin porosity characteristics 361, 364, 365 Captain Field AVO analysis 943-944 plays depositional environment 1110-1111 seismic attributes 940-942 Irish Rockall Trough 443 development problems 1101-1102 seismic inversion effects 942-943 Norwegian Sea 269 facies analysis 1105-1107 reservoir properties, Banff Field 980-987 reservoir rocks history 1101 seal properties 1093 Barents Sea 254, 256 horizontal drilling 1111-1112 sedimentary properties 952 Britannia Field 1115-1119 reservoir architecture 1107-1109 seismic inversion 1273 Captain Field 1104 reservoir stratigraphy 1104 stratigraphic play concept 912, 915 Central Graben 1225 seismic survey 1104-1105 Tor Formation study 945-947 Eastern Trough Area Project 993, 1000 structural setting 1102-1104 Chalk Exploration project 911-912 Foula Sub-basin 664-669 Captain Ridge 1102, 1104 Greater Ekofisk area Greenland (West) 321-323 carbon dioxide in gas 800-802 basin evolution 931-934 Newfoundland Grand Banks 518 carbon isotopes 803, 917 chalk stratigraphic plays 912, 975 North Sea (North) 232 carbonate cements 1348 exploration history 912 Norwegian Sea 278, 279-280 see also calcite exploration model 934 Porcupine Basin 242 Carboniferous palaeoenvironment analysis 917-921 Voring Basin 282, 323 depositional model for Trent Field 816-820 reservoir evaluation 921-929 rifting incised valley fill sedimentology 921 Faeroe-Shetland Basin 536-538 reservoir properties 785 source rocks 931 NE Greenland 327-329 valley connectivity 777-779 stratigraphy 915-917 sea-level evidence 334-335 valley extent 775-777 trap/seal evaluation 929-931 seal rocks valley fill 779-784 Chalk Group 814, 965, 969, 970, 1015, 1369 Fife Field 1138 plays Fife Field 1138 Fulmar Field 1093 case study by ribbon interpretation hydrocarbon system 932-934 sediments 795-797 Mid North Sea High Faeroe Shetland White Zone 603 Irish Rockall Trough 441-442 erosion 175-177 Rockaii Trough 415, 425-427, 436-437 reservoir rocks seismic analysis 171-175 Slyne Trough 445 Barents Sea 252 Slyne Trough 445 source rocks Caister Field 725 top chalk surface 776, 777 Barents Sea 256 INDEX XIX

Labrador Shelf 510, 511 rift-raft morphology 208 Erlend Platform 261 Newfoundland Grand Banks 503-504, reservoir rocks 1386 Erlend Transfer 42 506, 507, 508 seal rocks 1386-1387 Erris Ridge 438 Voring Basin 236 source rocks 1384-1386 Erris Trough 42, 404, 410, 411, 455-456 stratigraphy structure 206-207, 1383-1384 burial history model Atlantic margin (North) 231 Triassic lithostratigraphy 206 inputs 464-466 Banff Field 982 East Jan Mayen Fracture Zone 42 results 466-468 Central North Sea 190 East Midlands oilField 748-754 evolution 461-463 Elgin/Franklin Fields 1014-1015 East Midlands Shelf 774 hydrocarbon potential 463-464 Foula Sub-basin 664 East Piper High 856 morphology 456 Trent Field 814 East Shetland Basin see Brent Field; Strathspespey prospectivity 227 tectonics Field stratigraphy 457-459 Atlantic margin 23, 25, 31-33, 1353 East Shetland Platform 232 structural evolution 240-242 Banff Field 977-978 East Solan Basin 694, 701 structure 459-461 Nordland Ridge 89 Eastern Graben 1030 Etive Formation 93, 103, 1043, 1064, North Atlantic margin 49-51 Eastern Interior Basin 764 1065-1066, 1177 West of Shetland 647-649 Eastern Shoals Formation 518 Ettrick fans 855 volcanics, Northeast Rockall Basin 401 Eastern Trough Area Project (ETAP) Euramerican Carboniferous basins 758, 761 volcano complexes of North Atlantic 579 development 993-994, 1004-1005 European Basin, Namurian stratigraphy Cromer Knoll Group 103, 174, 814, 829, 880, reservoir behaviour 994-1004 764-765 1369 Edale Gulf 778, 781 Eurydice Formation 504, 520 Cruiser Formation 664 Edda Field 912, 913, 940-941 Evvia 108 crustal structure, Rockall Trough 422-424 Edgeoya Platform 248 expulsion of hydrocarbons, modelling Cullaidh Shale Formation 475, 482, 484 Egmanton Field 474 characteristics 1330 Cylindrichnus 1141, 1191, 1213 Egret Field extended reach drilling 1070 development 993-994 reservoir 994, 1002 Dalle Nacree Formation 474 Egret Formation 475 facies analysis Danish Central Graben 897, 898 Eider Field 1066-1067 Beryl Formation 1191-1192 see also Gertrud Graben Eiriksson Formation 1053 Carboniferous Darwin Complex 580-581, 586 Ekofisk Field 474, 912, 913, 915, 941, 945, Pennines 748-754 Darwin Igneous Centre 392, 396, 401 1147, 1255 Southern Permian Basin 799 Dauntless Field 883, 884-886 3D borehole profile chalk 921 debris flow 984 acquisition 1255-1256 Cretaceous deconvolution processing 1259-1260 processing 1256-1260 Captain sandstone 1105-1107 Deer Lake Group 513 results 1260-1261 NE Greenland 329-333 deltaic fades 1190-1191 results discussed 1261-1264 high density turbidite 1116 deltaic sandstone 343-344 Reservoir Characterization Project Jeanne d'Arc Basin 498 density calculations 602, 603, 604 3D model 1153-1154 Jurassic Devonian anisotropy 1152-1153 Central North Sea Trough 68-75, reservoir rocks architecture 1148 79-80 Barents Sea 252 description 1147-1148 Fife Field 1140 Faeroe-Shetland Basin 661 facies analysis 1150 Fulmar sands 1093-1094 sediments, Irish Rockall Trough 434 fault analysis 1150 Kangerlussuaq Basin 339, 340-344 source rocks, Barents Sea 250 permeability 1151-1152 Porcupine Basin 496 tectonics and palaeogeography porosity 1150 slurry flow 1116-1117 North Atlantic 11, 12-15 seismic monitoring 1154-1155 Tilje/Are Formations 1210-1211 West of Shetland 647 upscaling 1154 facies modelling, Brent Field 1044 diagenesis water saturation 1150-1151 Faeroe Basalt Plateau 559 chalk 921, 1223 see also Chalk Exploration Project development interpreted 561-564 Fulmar Formation 1018, 1345 Ekofisk Formation 177, 474, 915, 917, 920-921, seismic resolution 560-561 diffusivity, Piper Formation 1081 923, 928, 929, 967, 972, 973, 975, 982 stratigraphy 565-567 Dinantian stratigraphy see under North Sea Eldfisk Field 912, 913, 941, 945 Faeroe Basin 602, 647, 694 (South) Elgin Field Paleocene Diplocraterion 1141, 1142, 1191, 1213 geophysics 1015 geophysical properties 631-633 Donegal Basin 404, 409 history 1007-1008 petrology 630-631 Donna Terrace 83, 263, 264 reservoir rocks 1018 reservoir properties 628 Doon Rock Fault 438 source rocks 1018-1019 sedimentology 628-629 Douglas Field 1383, 1384 stratigraphy 1008-1015 stratigraphy 627-628 Downing Formation 504 trap type 1015-1018 Faeroe Channel Basin 602 Draupne Formation 827, 829, 830, 831, 836 England (Northern) Faeroe Channel Knoll 579, 602 seismic nature 833-835 Tertiary Volcanic Province 354 Faeroe Group 1369 stratigraphic architecture 829-832 thermal history reconstruction 354-355 Faeroe Islands, basalt stratigraphy 565 drilling technology, Tern Field 1069-1074 Eocene Faeroe Plateau Lava Group 574-578 Dun Caan Shale 475 Faeroe Shelf Dunlin Group 93, 103, 1039, 1040, 1235 generation of oil, Norwegian Central Graben 1333 prospectivity 227 Durward Field 883, 884-886 structural evolution 237 Dyroey Formation 474 inversion, North Atlantic margin 52 sediments Faeroe-Shetland Basin 8, 42, 56, 237, 392, 560, Faeroe Shetland White Zone 604 585-586, 602, 661-662 Eakring Field 474 Irish Rockall Trough 437 compression event 541-542 development of rifting East Central Graben, salt tectonics 185 North Sea (Central) 1348 basement 533 East Faeroes High 42, 602 Northeast Rockall Basin 400 Cretaceous 536-538 East Greenland Rift 42 Norwegian Sea 295-296, 298 Jurassic 535-536 East Hatton-Rockall Basin Centre 579 Rockall Trough 417 Paleocene 538-541 East Irish Sea Basin tectonics and palaeogeography Permo-Triassic 533-535 burial history 1387-1390 North Atlantic 33 gravity modelling 601-602, 604-605 hydrocarbon migration model West of Shetland 650 heat flow modelling 541 method 1390-1392 volcanics, Slyne Trough 445 Eqalulik type oil 311-312 method 588-589 results 1392-1395 results 589-591 results discussed 1395-1397 Erlend Complex 42, 580, 586 XX INDEX

Faeroe-Shetland Basin (continued) FLARE see Faeroes Large Aperture Research performance 1090-1091 igneous rocks Experiment reservoir facies 1093-1094 central complexes 550-551 flaser bedding 1191 reservoir modelling 1091 dyke swarms 548 Flemish Pass Basin 505, 507-509 sediment architecture 1096-1098 lavas (central volcanoes) 551-553 Fles Fault Zone 42, 263, 264 stratal stacking 1094-1096 lavas (regional) 546-548 Flett Formation 1369, 1370 structural setting 1092-1093 sills 550 Flett Ridge 602, 604, 672 Fulmar Formation 153, 157, 1014, 1021, prospectivity 227 Flett Sub-basin 645, 646, 647, 694, 1377 1090-1091, 1340 sequence stratigraphy 564 fault trends 650 illite growth 1345 underplating 586-588 petroleum systems analysis 657 petrography 1340 see also Foula Sub-basin reservoir rocks 654-656 porosity 1340-1341 Faeroe-Shetland Channel Sub-basin 647 seal rocks 656 pressure model 1320-1323 Faeroe-Shetland Escarpment 561, 563-564, seismic analysis 657 seismic character 1346-1347 602 source rocks 652-653 seismic inversion studies 1273-1274, Faeroe-Shetland Intrusive Complex 578-579, Tertiary stratigraphy 649 1274-1279 586 trap structure 656 West Central Shelf distribution 880 Faeroe-Shetland White Zone 601 flood basalts, North Atlantic LIP 574-578 depositional environment 880 maturity 607 fluid flow, Central Graben 1342-1345 provenance 889 migration model 608-610 fluid inclusion analysis Fulmar Terrace 211 overpressure 607-608 method 615-616 Fylla 1292 sedimentary history 603-605 results 619-623 AVO analysis 1292 source rocks 605 fluvial complexes, multistorey 773-775 reservoir interpretation 1292-1295 structural elements 601-603 fluvial facies 748-752 tectonic episodes 601 fluvial sandstone 343-344 thermal model 605-607 fluvio-deltaic facies 329 Gainsborough Field 474 Faeroes Dome 42 fluvio-estuarine sandstone 340-342 Galicia Bank Basin 42 Faeroes Large Aperture Research Experiment Foinaven Field 693 Galley Central High 846 (FLARE) appraisal 677-678 Galley Fan 854 seismic section interpretation pressure build-ups 681-682 Galley Field 874 effect of basalt 1247-1248 reservoir management 679-681 Galway Graben 410-411 geological significance 1249-1251 reservoir properties 678-679 Gamma Field 912, 913 velocity model 1248-1249 structure 676-677 gamma ray logs, Brent Field 97, 98 wide angle data Foinaven Sub-basin 645, 646, 647 Gamma structure 863 acquisition 1245-1246 fault trends 650 Gardarbanken High 249 processing 1246-1247 petroleum systems analysis 657 Garn Formation 265 Fairhead-Clewbay Fault 438 reservoir rocks 653-654, 654-656, 657 gas chromatography, West Greenland seepages fan sandstone 342-343 seal rocks 656 308, 309, 310, 311, 312 Fangst Group 1209 seismic analysis 657 gas composition, Southern Permian Basin Farewell Rock sediment log 776 source rocks 651-652 800-803 Farsund Formation 897, 898, 899, 902, 1225, Tertiary stratigraphy 649 gas generation modelling 1330 1325, 1333 trap structure 656 Geike Centre 579 fault analysis footwall degradation see fault scarp Geike margin 42 Brent Field 1044, 1046 degradation genetic stratigraphy 154 Hibernia Field Forth Approaches Basin, salt tectonics 184 geochemistry applied to source rocks genesis 523-525 Forth Formation 865 methods 476-477 trends 519-523 Forties Field 474 results 477-484 ribbon interpretation 795-796 Forties Sandstone Formation 474, 1126, 1302 result discussed 484-485 fault scarp degradation 91 Forties-Montrose High 1342 Gertrud Graben 897-899 Brent Field case study Fortune Bay Formation 493 lithological setting 903-904 degradation products 97-102 fossils, role in correlation 155, 339 sedimentology 902-903 external geometry 95-96 see also trace fossils seismic facies 899 internal structure 96-97 Foula Group 661, 695, 700-704 seismic inversion 899-902 reservoir potential 103-104 Foula Sub-basin 647 Gjallar Ridge 42, 263, 264, 269, 279, 323 scarp evolution 102-103 reservoir properties 664-669 glacioeustasy, Carboniferous 752, 757, 766 slope failure 102 stratigraphy 664 Glen Ridge 845 slope instability 91-92 structure 662 Glenworth Field 474 fault seal analysis 1177-1179 Turonian palaeogeography 670-672 Goban Spur 404 methods 1179-1180 fractures Goose Tickle Group 513 results 1180-1184 chalk 984-986, 1224-1225 Grand Banks see Newfoundland Grand Banks Feda Graben 898, 1030 modelling behaviour in migration 1331, gravity feldspar 620, 622, 1340-1341 1332-1333 NE Rockall Basin 379-382 Fell Sandstone Formation 800 fragmentograms, West Greenland seepages Rockall Trough 427-428 depositional model 740-742 309, 310, 311, 312 West of Shetland 694 reservoir potential 735-736 Franklin Basin 120 gravity slides 113 Feni Ridge 412 Franklin Field Great Glen Fault 10, 42 Fife Field geophysics 1015 Greater Ekofisk area see Chalk Exploration development history 1135-1136 history 1007-1008 Project reservoir characterisation reservoir 1018 Greater Shearwater area facies analysis 1140-1142 source rocks 1018-1019 Jurassic sequence stratigraphy modelling behaviour 1143-1145 stratigraphy 1008-1015 Kimmeridgian 164-167 sedimentology 1138-1140 trap type 1015-1018 Oxfordian 157-163 sequence stratigraphy 1142-1143 Frigate Formation 157 Green Point Formation 512 stratigraphy 1138 Froan Basin 42 Greenland (East) 404 structure 1138 full field simulation model (FFSM) lava correlations 567-569 well database 1136-1138 Brent Field 1041 see also Kangerlussuaq Basin Fisher Bank Basin 120-123, 124, 204, 1030 application 1043-1045 Greenland (NE) Fladen Ground Spur 119-120, 122, 844, 855 inputs 1041-1043 controls on sedimentation 333-335 Palaeozoic sequences 138 Fulmar Field 211 Cretaceous facies analysis 329-333 seismic line 139, 146 by-passed oil potential 1098-1099 Cretaceous rift events 326-329 Fladen Group 1014, 1078 history 1089-1090 structure 325-326 INDEX XXI

Greenland (West) 1292 structural patterns Iroquois Formation 504, 520 AVO analysis 1292 fault genesis 523-525 Itilli type oil 310-311 exploration history 315-317 fault trends 519-523 geological evolution 318-319 Hibernia Formation 474, 493, 504, 506 J Ridge 154 reservoir rocks 321-323 Hidra Formation 915, 917, 919, 922 Jackfork Sandstone 764 trap types 323 high pressure/high temperature plays defined Jacqui Graben 75 reservoir interpretation 1292-1295 989 Jaeren High see also Nuussuaq Basin Highland Boundary Fault 10, 42 coherency study 1304-1305 Griesbachian Shale 695 Highlander-Piper High 846 salt tectonics 184-185 Gudrid Formation 510 Hod Field 912, 913, 949 Jan Mayen Lineament 42, 46, 262, 263 Gullfaks Field chalk core details 952 Jeanne d'Arc Basin 42, 473, 474, 475, 476, fault seal study 1177-1179 cross section 955 504-507 methods 1179-1180 stratal thicknesses 952-953 facies analysis 498 results 1180-1184 stratigraphy 949-951 sedimentation 491, 492-494 reservoir properties 1177 structure 951-952 source-rock correlations 477-485 structure 1177 Hod Formation 915, 917, 919-920, 922, 929, tectonic history 488-491 950, 952 see also Hibernia Field Hold with Hope Group 325 Jeanne d'Arc Formation 475, 483-485, 492, Haisborough Group 203 facies analysis 329-333 496, 498, 504, 506, 518 Halibut Horst 844-845, 855, 856-857 Holywell Shale 475, 1384 Joggins Formation 766 Halibut Platform 863 Home Forland Formation 325 Judd Basin 694 Halibut Shelf 122 Hopedale Basin 509 Judd Fault Complex 602, 694 Halten Terrace 42, 83, 263, 264 Horda Platform 232 Judd High 647, 694 geophysical properties 284-285, 286 horizontal drilling 1111-1112 Judd Platform 602 structural evolution 56, 232-233 see also Nevis Field Judd Transfer 42 thermal model 1318 Hornsund Fault Zone 42 Jurassic Haltenbanken see Heidrun Field Horseshoe Basin 501 facies analysis, Fife Field 1140 Hammerfest Basin 42, 1295-1296 Hospital Ground Formation 800 migration, Norwegian Central Graben 1336 AVO analysis 1296-1297 Hot Lens 867 palaeogeography 1205 Hampshire Basin 474 Hot Sand 867 Grand Banks 490 Hardangerfjord Shear Zone 42 Howley Formation 513 Irish Rockall Trough 436 Hardegsen unconformity 203, 213 Humber Group 93, 102, 157, 174, 1014, 1054, Norwegian Sea 265-267 Hatton Basin 414 1281, 1284, 1340, 1369 plate setting, Slyne Trough 452 Hatton Trough 42 Outer Moray Firth study plays, Irish Rockall Trough 442 Hauptdolomite 474 biozones 841 reservoir rocks heat flow equations 1316 depositional history 844, 845, 846 Barents Sea 254, 256 heat flow modelling lithostratigraphy 841 Beryl Formation 1054 method 588-589 origins 855-858 Brae Formation 1200 results 589-591 sequence stratigraphy 841 Brent Field 93 study areas sequence description 847-855 Brent Group 1039, 1063, 1064, 1235 East Irish Sea Basin 1387 terminology 842-843 Elgin/Franklin Fields 1018 Faeroe-Shetland Basin 541 see also Fulmar Formation; Kimmeridge Faeroe-Shetland Basin 661 Faeroe-Shetland White Zone 605-607 Clay Fife Field 1138 Heather Formation 93, 102, 157, 605, 827, hydrocarbon generation modelling Fulmar Formation 1089, 1090 829, 830, 831, 836, 1014, 1021, 1281, inputs 1327, 1330 Fulmar Sandstone 1340 1284 outputs 1333-1336 North Sea (North) 232 heavy mineralogy 177 Solan Field 705-706 Cretaceous, Norwegian Sea 279-280 Tilje/Are formations 1211-1216 Helland Hansen 282 Iapetus Suture 42 rifting, Faeroe-Shetland Basin 535-536 Hebrides Basin 404, 475, 476 Iceland plume 573-574, 650, 1250-1251 seal rocks 93, 1093, 1138 source rocks 480, 481 ichnofabric and icnofacies sediments Hebrides Terrace Seamount 581 Fife Field 1141 Central North Sea Trough 68-75 Hebron Field 474 Fulmar sands 1093-1094 Faeroe Shetland White Zone 603 Heidrun Field 474, 1209-1211 West Central Shelf 880 Gertrud Graben 902-903 facies analysis 1210-1211 igneous activity see magmatism Irish Rockall Trough 435-436 reservoir modelling He Formation 265 Jeanne d'Arc Basin 491, 492-494 data 1211-1216 illite 1345 Northeast Rockall Basin 399 results 1216 incised valley fill (IVF) 766 Porcupine Basin 491-492, 494-496 uncertainty analysis 1217-1219 recognition 775 Rockall Trough 415, 427 stratigraphy 1210 Trent Field 817-818 Slyne Trough 445-446 Hekkingen Formation 252 Upper Carboniferous examples see also Humber Group Hel Graben 42 reservoir properties 785 sequence stratigraphy Helland Hansen licence valley connectivity 777-779 Fife Field 1142-1143 depositional model 291 valley extent 775-777 Greater Shearwater 157-167 geophysical modelling 284-286 valley fill 779-784 Telford Field 1078-1080 lithologies 286-291 Inner Moray Firth 64, 65, 120-123, 124, 474, West Central Shelf 881-886 reservoir properties 282 475 source rocks seismic characterization 282-284 pull-apart basin 222 Atlantic margin 1354 structural setting 282 thermal model 1317-1318 Barents Sea 252, 255 Helland-Hansen Arch 42, 264 Inner Snorre Fault 107, 108-109 Central Graben 1225 Helminthopsis 1189, 1190, 1191 Innuitian orogeny 248 Erris Trough 464 Heno Formation 897, 898 intrusive igneous rocks see sill complexes Faeroe-Shetland Basin 237 Heno Plateau 898 inversion events Halten Terrace 233 Hercynian unconformity 447 Central North Sea 193-195 Hebrides Basin 476, 480 Heron Field Tertiary 35 Irish Rockall Trough 440 development 993-994 Rockall 452 Jeanne d'Arc Basin 473, 480 reservoir 994, 1001-1002 Iona Field 865 Kimmeridge Clay 1340 Hibernia Field 474, 517-518 Irish Rockall Trough see Rockall Trough Minches Basin 476, 480 lithostratigraphy 518-519 (Irish sector) Newfoundland Grand Banks 502, 505, reservoir character 525-526 Irish Sea see East Irish Sea Basin 507, 509 XXI1 INDEX

Jurassic, source rocks (continued) Lowlander Field 868, 872 Rona Sandstone 623-624 North Sea (North) 232 Loyal Field 683-684 West Shetland 1377 Norwegian Central Graben 1325, 1333 development 691 Miller Field 1199-1200 Porcupine Basin 242, 472, 480 gas management 691-692 depositional setting 1203-1204 Rockall Trough 240 history 684 heterogeneity evaluation 1205-1207 Slyne Trough 476, 480 reservoir properties 686-691 palaeogeography 1205 Solan Field 711 seal rocks 686 reservoir modelling 1200 West of Shetland 651 seismic data 684-685 architecture 1201-1202 West Shetland 1377 structure 685-686 lithology 1202 stratigraphy trap type 686 Millstone Grit Formation 474, 800, 809, 811, Atlantic margin (North) 231 Luva structure 275, 276 813, 816 Central North Sea 187-190, 1032-1033 reservoir/play behaviour 278-280 Minches Basin 475, 476 Elgin/Franklin Fields 1014 seismic evaluation 275-278 source rocks 480 Tampen Spur 827-828, 829-832 Lysing Formation 268, 278, 282 mineralogy Trent Field 814 Carboniferous sediment provenance Witch Ground Graben 140-141 783-784, 785 tectonics Machar Field chalk 926 Banff Field 977 development 993-994 Kangerlussuaq Basin sandstones 344 Nordland Ridge 87-88 reservoir 994, 999-1001 see also heavy mineralogy North Atlantic margin 47-49 Madgard Field 474 minibasins 886-887, 1008 North Sea 117 magmatism Miocene West of Shetland 647 Norwegian Sea 272 inversion, North Atlantic margin 52-53 Witch Ground Graben 141-143 Palaeogene, Faeroe-Shetland Basin 546-553 sediments tectonics and palaeogeography 18, 20-29, West of Shetland 650 Faeroe Shetland White Zone 604-605 1353 see also Atlantic margin large igneous Norwegian Sea 296, 300 thermal doming, Witch Ground Graben 136, province (LIP) Rockall Trough 418 138-139 magnetic data, NE Rockall Basin 382 Slyne Trough 445 unconformities, North Sea 117-118 magnetic resonance imaging log (MRIL) 632 Mississauga Formation 503 Magnus Field 474 Mjod prospect 956 Kangerlussuaq Basin 337 Mammal Centre 579 Modgunn Arch 42, 264 basin evolution 339 Mandal Formation 931, 1225, 1325, 1333 Mohns Ridge 42 petroleum potential 344-345 Mandal High 897 Moine Thrust 10, 42 sandstone wedges 340-344 marine shelf facies, NE Greenland 330-331 Mokami Formation 510, 511 stratigraphy 337-339 Maritimes Basin 513-514, 765-766 Monan Field kaolin, role in diagenesis 1347 Markland Formation 510, 511 development 993-994 Kenamu Formation 510, 511 Marnock Field reservoir 994, 999 Ketch Field 800 development 993-994 Montrose Field 1125, 1128, 1129 Keys Fault 208 reservoir 994-996 Montrose Group 172, 176, 177 Kimmeridge Clay Formation 93, 157, 388, 474, Marnock Sands 185-186 Moray Firth 65, 71, 1093 475, 483-485, 535, 603, 605, 607, 608, 650, Marraat type oil 309-310 see also Captain Field; Inner Moray Firth; 695, 704-706, 711, 827, 851, 880, 1014, Marulk Basin 107 Outer Moray Firth 1080, 1089, 1093, 1284, 1340 maturity Moray Group 172, 176, 177, 1369 Fife Field 1138 Barents Sea 257 More Basin 8, 10, 21, 34, 42 seismic inversion 1273, 1279 modelling in Faeroe Shetland White Zone Cenozoic development vitrinite reflectance data 1375 607 sedimentary breaks 295-298 West Shetland 1377, 1380 Southern Permian Basin 800 sedimentary units 298-300 Kinderscout Grit 778, 781 Maureen Formation 177 sequence stratigraphy 300-302 Kingfisher Field 1200 maximum flooding surfaces (mfs) structural setting 293-294 Kittiwake Field 879, 880-881 Greater Shearwater area tectonic history 302-303 sequence stratigraphy 881, 882-883, 886 Aemula 158-160 hydrocarbon prospectivity 269-270 Knipovitch Ridge 42, 254 Compat 167 magmatism 272 Kolbeinsey Ridge 42 Crystallinum 163 palaeogeography Kong Karls Land Platform 248 Jurapannosum 165-166 Cretaceous 267-268 Kraka Field 912 Pannosum 166-167 Jurassic 265-267 Kuugannguaq type oil 310 Polonicum 162 Tertiary 268-269 Redcliffense 163 prospectivity 227 Labrador Sea 8 Jeanne d'Arc Basin 493 stratigraphy 262-263 Labrador Shelf 505, 509-511 Telford Field 1084 structural evolution 56, 236-237, 263-265 lacustrine facies 749 West Central Shelf 881-882 tectonic setting 261-262 Lamba Formation 1369, 1370 see also TEMFS thermal history 270-271 Lange Formation 268, 282 Median Volcanic Ridge 42 More-Trondelag Fault Zone 10, 42, 46 Laramide events 177 Mercia Mudstone Group 203, 207, 447, 1157, Morecambe Fields 207 large aperture recording 1245 1384, 1386 Motel Model 652 Lealt Formation 484 Mexborough Rock 748-752 multi-layer generation and migration Leman Field 1299-1302 micropalaeontology, role in correlation 155 modelling 1308 Lennox Field 1383, 1384 Mid North Sea Dome 136 multilateral drilling 1070 Leyland Formation 1387 Mid North Sea High 171 Mungo Field Lindesnes Ridge 913, 941 Chalk Group development 993-994 Lista Formation 177 erosion 175-177 reservoir 994, 996-999 lithofacies analysis 984 seismic analysis 171-175 Munkegrunnur Ridge 392, 559, 602 lithostratigraphy v. chronostratigraphy Mid-Cimmerian unconformity 117 Murdoch Field 793, 794, 800 156-157 Mid-Faeroe Ridge 1253 ribbon interpretation 796-797 Little Minch Trough, thermal history migration of hydrocarbons 1225, 1308 Murre East Fault 519-520, 523 reconstruction 353 modelling characteristics Murre Fault 519-520, 523 Loch Lomond Prospect 669 inputs 1330-1333 Lofoten Line 42 outputs 1336-1338 Naglfar Dome 42, 264-265, 323 Lofoten Ridge 263 regions modelled Namurian stratigraphy Logan Canyon Formation 503 Atlantic margin 1360-1361 palaeovalley systems 766 Lola Formation 898 Faeroe Shetland White Zone 608-610 regional basins Loppa-Ringvassoy Fault Complex 42 NE Rockall Basin 387-388 Appalachian Basin 760, 763 INDEX XX111

Eastern Interior Basin 764 structural development 1030-1033 Ordovician reservoir rocks 513 Euramerican basins 758, 761 experimental analogue 1033 Ormen Lange Dome 42 European Basin 764-765 see also Arkwright Field; Britannia Field Orphan Basin 42 Maritimes Basin 765-766 Central Graben; Oslo Graben 42 Ouachita Basin 764 Fife Field; Fulmar Formation Otter Bank Fault 694, 695 Southern North Sea Basin 772 North Sea (Danish Sector) 897, 898 Otter Bank Sandstone 695, 701-704, 710 sandbody classification 760 see also South Arne Field; Gertrud Graben Otter Bank Shale 695 Trent Field 811,575, 816 North Sea (North) Ouachita Basin 764 Nansen Formation 1235 structural evolution 232 Outer Hebrides Fault Zone 42 Nautilus Fault 521, 525 see also Beryl Embayment; Brent Field; Outer Isles Thrust 8 Neogene rifting and uplift 53-56 Tampen Spur; Tern Field; Viking Outer Moray Firth 65, 124 Neptune Formation 672 Graben fault seals 863 Ness Fault Zone 383 North Sea (Norwegian) see Edda Field; Jurassic tectonics 858 Ness Formation 93, 102, 1043, 1064, Ekofisk Field; Norwegian Central Graben Paleocene uplift 175 1065-1066, 1070, 1177 North Sea Rift reservoir geology 862 Ness Lineament 392 evolution model 75 stratigraphy 862 net:gross ratio 1130 regional setting 63-64 structural setting 843-846 Netherlands sub-basins 65 trap geometry and integrity 875-877 pop-up structure 222-223 North Sea (South) 772-773, 796-797 Lowlander area 868, 872 pull-apart basin 221-222 Dinantian stratigraphy 729-730, 731, 732, North Halibut Basin 863-865 Nevis Field 1051 735, 736, 738 Scott area 870, 873, 874 horizontal well project basin structure 730-733, 734 South Piper area 865 application of VSP 1055 depositional model 740-742 Tartan area 865-868, 869, 871 evaluation 1060 reservoirs 735-740 see also Humber Group; Telford Field perforating 1059-1060 sand body geometry 743-744 Outer Ridge Complex 505, 507 pilot result 1055-1057 sedimentary history 733-735 overpressure 1318-1319 reservoir simulation 1054 Upper Carboniferous Central Graben 1341-1342 well planning incised valley fill reservoir properties 785 exploration risk 1226-1230 method 1054-1055 lithostratigraphy 773 Faeroe Shetland White Zone 607-608 results 1058-1059 Westphalian sand bodies 754-755 modelling 1320-1323 stratigraphy 1053-1054 see also Leman Field structure 1051-1052 North Westray Ridge 602 Newfoundland Grand Banks 501 Northeast Rockall Basin (NERB) 391 P waves see seismic waves basin structure and potential 501-509 chronostratigraphy 404 Pabba Shale 475 Jurassic palaeogeography 490 crustal structure 401 Pabba Shale Formation 446, 482 see also Hibernia Field gravity modelling 379-382 palaeogeography Newfoundland 511-514 magnetic modelling 382 Carboniferous 733, 737, 799 see also Labrador Shelf modelling hydrocarbon potential 387-389 Cretaceous 267-268, 670-672 Niaqornaariuk type oil 312-313 stratigraphy 398-401 Jurassic 1205 Nise Formation 278, 282 structure 382-383, 386, 392-398 Central North Sea Trough 74 nitrogen in gas 800, 804-805 tectonic evolution 402 Grand Banks 490 Nokken prospect 1221 Tertiary sequence stratigraphy 387 Norwegian Sea 265-267 Nordfjord-Sogn Detachment 42 volcanism 401 Porcupine Basin 477 Nordkapp Basin 42 Northwest European Gas Atlas project 798 Slyne Trough 452 Nordland Ridge 42, 83-86, 671 Norwegian Central Graben 898, 1326 Mesozoic, Irish Rockall Trough 436 salt tectonic effects 86-89 modelling characteristics Tertiary 268-269, 552 North Anatolian Fault 147 inputs Palaeophycus 1191, 1213 North Brook Formation 513 hydrocarbon expulsion 1330 palaeotemperature analysis 619 North Buchan Graben 856 hydrocarbon generation 1327, 1330 palaeovalley systems see incised valley fill North Claymore Field 873 hydrocarbon migration 1330-1333 Paleocene North Halibut Basin 862, 863-865 source rocks 1325-1327 compression, Faeroe-Shetland Basin North Halibut Graben 853, 856 outputs 1333-1338 541-542 North Mayo Basin 409 Norwegian Central Trough 71 facies analysis, Kangerlussuaq Basin 339, North Minch Basin 404 Norwegian Continental margin 84 342-344 North Morecambe Field 1383 see also Voring Basin also More Basin igneous activity, West of Shetland 650 North Permian Basin see North Sea (Central) Norwegian Sea see Nyk High inversion tectonics 175 North Porcupine Basin 404 Nuussuaq Basin 305-306 magmatism, North Atlantic margin 51-52 North Rona Basin 602 exploration history 306 migration, Norwegian Central Graben North Sea 293 seepage studies 1336-1338 charge models 1323-1324 analysis 308 palaeogeography, Irish Rockall Trough pressure models 1320-1323 characterization of oil 309-313 436 Tertiary sequence well ties 1268-1270 recognition 306-308 reservoir rocks 693, 993, 996, 999 thermal models 1317-1318 Nyk High 263, 264, 323 Arkwright Field 1125, 1302 triple junction area reservoir/play behaviour 278-280 Faeroe-Shetland Basin 237, 556, 628 thermal doming 117-118 seismic evaluation 275-278 Greenland (West) 321-323 unconformities 117-118 structural setting 275 Labrador Shelf 511 North Sea (Central) Schiehallion Field 683 major graben 1030 West of Shetland 653-656 salt tectonic control on inversion 191-195 Olga Basin 248-249 rifting, Faeroe-Shetland Basin 538-541 salt tectonic control on sedimentation Oligocene seal rocks, West of Shetland 656 Cretaceous 191 inversion, North Atlantic margin 52 sediments Jurassic 187-190 sediments Faeroe Shetland White Zone 603-604 Tertiary 181 Irish Rockall Trough 437 Irish Rockall Trough 437 Triassic 182-185 Northeast Rockall Basin 400 North Sea (Central) 1348 seismic sections 1030-1033 Norwegian Sea 296, 298 Northeast Rockall Basin 400 stratigraphy Rockall Trough 418 Norwegian Sea 295, 298 Jurassic 186 Slyne Trough 445 Rockall Trough 415-417 Permian 179-181 opal reflector 270-271 sequence stratigraphy, West Shetland Tertiary 190-191 OphiomorphaSSO, 1093, 1094, 1190, 1191, 1213 1368-1371 Triassic 181 Orcadian Basin 647 source rocks, Voring Basin 236 XXIV INDEX

Paleocene (continued) Pliocene sediments Labrador Shelf 510, 511 stratigraphy Faeroe Shetland White Zone 605 Newfoundland Grand Banks 503-504, Atlantic margin (North) 231 Norwegian Sea 296, 302 506, 507, 508, 518 Banff Field 982 pods see minibasins North Sea (North) 232 Faeroe Basin 627-628 Poisson's ratio 1290 Norwegian Sea 278, 279-280 Foula Sub-basin 664-665 pop-up structures 215, 222-223 Voring Basin 323 West of Shetland 649 modelling behaviour 216-221 Cretaceous/Paleocene, Greenland (West) tectonics Porcupine Bank 411 321-323 Banff Field 977-978 Porcupine Basin 42, 404, 472-473, 474, 475 Devonian/Carboniferous, Faeroe-Shetland North Atlantic 25, 32 fades analysis 496 Basin 661 West of Shetland 650 oil geochemistry 477-479 Jurassic palynology, role in correlation 155 palaeogeography 477 Beryl Formation 1054 Papa Basin 602, 647, 694, 701 prospectivity 227 Brae Formation 1200 Papa Group 1369 sedimentation 491-492, 494-496 Brent Field 93 Papa High 602 source rock correlations 477-485 Elgin/Franklin Field 1008 Paris Basin 474 structural evolution 56, 242 Faeroe-Shetland Basin 661 Pennine Basin 764-765, 778, 817 tectonic history 488-491 Fife Field 1138 Pennine coalfield 748-754 tectonostratigraphy 476 Fulmar Formation 1089, 1090, 1340 Pentland Formation 119, 1.21, 126, 153, 156, Porcupine Seabight Basin 392 North Sea (North) 232 1002, 1014, 1021-1022, 1030,1031, 1078 porosity Solan Field 705-706 permeability Arkwright reservoir 1130 Telford Field 1080-1086 Arkwright reservoir 1130 chalk 924-925 Tern Field 1063, 1064, 1065-1066 Brae Formation 1207 Chalk Group 973 Tilje/Are formations 1211-1216 chalk 926 depth relationship, chalk 1223 Jurassic/Cretaceous, Barents Sea 252-254 Ekofisk Formation 1150 Ekofisk Formation 1150 Ordovician, Newfoundland West 513 fault gouge 1179 Fulmar Sandstone 1340-1341 Paleocene 993 Piper Formation 1081 diagenetic effects 1345-1346 Arkwright Field 1125, 1302 Tilje/Are formations 1215 Piper Formation 1081 Faeroe Basin 628 see also porosity v. permeability relation to seismic response of chalk 939, Faeroe-Shetland Basin 556 Permian 940-943 Machar/Monan/Mungo fields 996, 999 reservoir rocks effect of fluid 944-945 Schiehallion Field 683 Barents Sea 252-254 Tor Formation study 945-947 Voring Basin 236 Leman Field 1299 Tilje/Are formations 1215 West of Shetland 653-656, 693 seal rocks, Leman Field 1299 porosity depth cube 956 Permian, Leman Field 1299 sediments, Slyne Trough 447 porosity v. permeability 779, 742, 970, 972 Triassic 993 source rocks, Barents Sea 250 Portree Shale Formation 446, 475, 482 East Irish Sea Basin 1384, 1386, 1387 stratigraphy President Sandstone 779, 782 Faeroe-Shetland Basin 661 Central North Sea 179-181 pressure models 1320-1323 Marnock Field 994 Elgin/Franklin Fields 1008 principal displacement zones (PDZ) 215 Strathmore Field 700-704 Trent Field 812, 813 pristane/phytane ratio 309, 310, 311, 312 Tern Field 1066 tectonics and palaeogeography Protogine Zone 42 Wytch Farm Field 1157 North Atlantic 13, 19-20 pseudo-acoustic impedance 1067 residua] salt analysis 1129 West of Shetland 647 Puffin High 123, 126 resistivity 632, 633 Permo-Triassic pull-apart basins 215, 221-222 Revfallet fault 83, 88 extension and rifting modelling behaviour 216-217 Rhizocorallium 1191, 1213 Faeroe-Shetland Basin 533-535 Pyrenean phase 915 Ribban Basin 263 North Atlantic margin 46-47 pyroclastics, West of Shetland 650-651 ribbon interpretation 792-795 North Sea 63-64 rift-raft tectonics 201, 202, 203 Witch Ground Graben 136 quartz in fluid inclusion analysis 620, 621-622 rifting events 53-56 plays, Irish Rockall Trough 442 Quaternary of Captain Ridge 1104 Faeroe-Shetland Basin 536-538 sediments NE Greenland 327-329 Rockall Trough and NE Basin 399, 415, Rankin Fault 521, 525 North Sea 63-64 427, 435 Rankin Field 475 Roan Sandstone 695, 704-705 Perth Field 863 Rankin Formation 484, 491, 492, 505-506, 507 Rockall Centre 581 petrography, Paleocene sandstone 689 Rannoch Formation 93, 103, 1043, 1064, 1066, Rockall Trough 8, 42, 359-360, 371, 391, petroleum systems 231 1070, 1177 585-586 Atlantic margin (North) 242-243 RAPIDS 422 basin model 428-430 success/failure analysis 657-658 Ras Basin 263, 264 Caledonian Front 9 petrophysical analysis, Arkwright reservoir Rattray Volcanics Formation 121, 1078 chronostratigraphy 404 1130 Raude Formation 1053 crustal structure 422-424 Phoebichnus 1191 Rauen-Witten Quarry 774 forward modelling basin geometry Phycosiphon 1141, 1142, 1189 ray-trace (path) migration modelling 1307, method 373-375 phyllosilicates in fault gouge 1179 1308 results 375-377 Pijnacker Field 222, 223 Redshin Quarry (Northumberland) 739-740, gravity survey 427-428 Piper Field 149, 847, 851, 865 743 heat flow modelling Piper Shelf 119-120 releasing/restraining step-over 276 method 588-589 Planolites 966, 968, 1141, 1191, 1213 reservoir properties 921-929, 1025 results 589-591 plate tectonic reconstructions see also porosity also permeability Jurassic tectonics 21 North Atlantic margin 48 reservoir rocks plate tectonic reconstructions 361-362 Northeast Rockall Basin 402, 403 Carboniferous 785 modelling 368-369 Rockall Trough 361-362 Caister Field 725 plate boundaries 362-364 modelling 368-369 Newfoundland West 514 poles of rotation 364 plate boundaries 362-364 North Sea (South) 735-740 rigid plate method 364 poles of rotation 364 Southern Permian Basin 800 stretching data 366-368 rigid plate method 364 Trent Field 816 prospectivity 227 stretching data 366-368 Cretaceous 993 rifting history plateau basalts, West of Shetland 650 Britannia Field 1115-1119 crustal structure 372, 374 Pleistocene of Norwegian Sea 296-298, Captain Field 1104 gravity anomalies 373 302 Central Graben 1225 stratigraphy 373 Plio-Pleistocene of NE Rockall Basin 401 Helland Hansen licence 282-284 sediment sequence 424-427 INDEX XXV

seismic survey 422 Jurassic Sentralbanken High 250 structural evolution 56, 239-240 Brent Field 93 sequence boundary defined 1084 underplating 586-588 Fife Field 1138 sequence seismostratigraphy 284 Rockall Trough Intrusive Complex 579 Fulmar Formation 1089, 1090 sequence stratigraphy 154 Rockall Trough (Irish sector) 433 Labrador Shelf 511 Carboniferous, Trent Field 819 crust 434 Nevis Field 1054 Jurassic crustal features 412-414 Paleocene Fife Field 1142-1143 modelling evolution 439-439 Arkwright Field 1302 Greater Shearwater 157-167 palaeogeography 436 West of Shetland 656 Telford Field 1078-1080 perched basins 409-412 Permian, Leman Field 1299 West Central Shelf 881-886 petroleum potential 440-444 Schiehallion Field 686 Tertiary stratigraphy 434-437 Triassic NE Rockall Basin 387 stretching factor 414 East Irish Sea Basin 1384, 1386-1387 Norwegian Sea 300-302 structure 407-409, 437-439 Wytch Farm Field 1157 West Shetland 1368-1371 tectonostratigraphy 415-418 seaward dipping reflector sequences (SDRS) Seymore Field 210 Rona Fault 536 578 Sgiath Formation 127 Rona Ridge 538, 602, 613-614, 670, 672, 694, seepage studies shale gouge ratio 1179, 1182 695, 719 Anticosti Basin 511 Shallow Bay Formation 512 thermal history reconstruction Nuussuaq Basin 308-313 Shearwater prospect methodology 614-616 seismic imaging appraisal 1021-1022 results 616-623 acquisition 1255-1256 development 1024-1026 use in migration studies 623-624 processing 1256-1260 feasibility study 1022-1024 Rona Sandstone Formation 535, 661 results 1260-1261 Sherwood Sandstone Group 447, 474, 1157 thermal history reconstruction results discussed 1261-1264 age 1388-1389 methodology 614-616 seismic interpretation 795-797, 1243-1245 hydrocarbon migration modelling results 616-623 facies 899 method 1390-1392 use in migration studies 623-624 ribbon correlation 792-795 results 1392-1395 Ror Formation 1210 workflow 790-792 results discussed 1395-1397 Rosemary Bank 42, 392, 401 seismic inversion 928-929, 1271-1280 reservoir properties 1384, 1386, 1387 Rosemary Bank seamount 579, 586 Beryl Embayment 1282-1287 Shetland Group 915, 916, 917, 1369 Rossan Basin and Ridge 411 Brent Field 1047-1048 hydrocarbon system 931-932 Rosselia 1191 Tern Field 1067-1068 palaeoenvironment analysis 917-921 Rost Basin 42 seismic properties of chalk 940-943 porosity/permeability analysis 928 Rotliegendes Group 812, 1008, 1031, 1138, effect of fluid 944-945 Shetland Spine fault 536, 602 1299, 1384 Tor Formation study 945-947 Shetland, West 613-614 Rough Rock Group 765, 766, 774 seismic sections amplitude versus offset (AVO) case study Ruhr District 773, 779, 780 Arkwright Field 1128, 1302 anisotropy 639-641 Brent Field 95, 1239 conventional model compared 641 S waves see seismic waves Central North Sea 1031 pre-drill model 635-636 Sabden shale 1384 East Midlands oilField 753 walkaway vertical seismic profile Saglek Basin 509 Elgin Field 1010 638-639 Saglek Formation 510 Erris Trough 459 well data 636-638 St George Group 513 Faeroe-Shetland Basin 550, 551 evolution 647-650 St Kilda Centre 580 Fladen Ground Spur 139, 146 exploration history 645-646 salt, role in rift-raft tectonics 201, 205 Franklin Field 1011 reservoir rocks 653-656 salt chimneys 886 Fulmar Field 1093 seal rocks 656 salt domes, effect on heat flow 1316 Gertrud Graben 899 source rocks 651-653 salt minibasins 886-887 Greater Shearwater 161 thermal history reconstruction salt tectonics Helland Hansen licence 287 methodology 614-616 Banff Field 977 Jaeren High 1304 results 616-623 Central North Sea 63-64, 66-68, 79, Leman Field 1300 use in migration studies 623-624 182-191, 1033 Murdoch Field 793 trap structure 656 Nordland Ridge 86-89 Nevis Field 1053 see also Foinaven Field North Sea Rift 63-64 Northeast Rockall Basin 395 Shetland-Faeroes Basin 1253 Saltire Field 854, 865 Revfallet fault 88 shoreface sediments 1093 sandbox modelling 1033 Rockall Trough 425, 426, 427 Sigmundur Centre 579 Scalpa Sandstone Formation 446 Shetland-Faeroes Basin 1253 sill complexes, North Atlantic LIP 578-579 Scandian trend 135 Slyne Trough 449, 450 Siphonichnus 1191 Scapa Field 873 Snorre-H Basin 833, 834, 835 Skagerrak Formation 185-186,203, 1002, 1008 Schaubcylindrkhnus 1189 Solan Field 699 reservoir model 1002-1004 Schiehal'lion Field 645, 683-684, 693 South Arne Field 969, 972 Skolithos 1141, 1191, 1213 development 691 Southern North Sea 180 Skua Field 1324 gas management 691-692 Strathmore Field 697 development 993-994 history 684 Strathspey Field 1238, 1239 reservoir 994, 1002 reservoir properties 686-691 Telford Field 7077 Sleipner Formation 119 reservoirs 657 Trent gasfield 575 slurry flow 1116-1117 seal rocks 686 Victory Field 716 Slyne Trough 42, 404, 410, 476 seismic data 684-685 West Central Shelf 180 plate tectonic setting 451-452 structure 685-686 Witch Ground Graben 139, 143, 147 prospectivity 227 trap type 686 seismic sections Keys Fault 208 section restoration 448-451 Scott Field 870, 873, 874 Central Graben 272 source rocks 480, 481 Scremerston Coal Formation 475, 736-740 Fisher Bank Basin 272 stratigraphy 445-447 Sea of the Hebrides Basin 42, 353 seismic waves structural evolution 240-242 sea-level change conversion 1243, 1257-1259 structure 448 Carboniferous 752, 757, 766 velocity crossplots 1268 smear-gouge ratios 526 Cretaceous 334-335 velocity ratio 1290 Smith Bank Formation 203, 880, 886, 1008, seal rocks 148, 863, 1129, 1331, 1332 Sele Formation 1302 1138 Cretaceous 929, 931 s.e.m., Paleocene sandstone 631 Snakes Bight Formation 513 Fife Field 1138 Senja Fracture Zone 42, 46 Snoevit Field 474 Fulmar Field 1093 Senja Ridge 42 Snorre fault block and horst 109 XXVI INDEX

Sola Formation 1117 reservoir rocks 700-704 West Central Shelf 892 Solan Basin 602, 647, 1377 fluid properties 706-711 Witch Ground Graben 137, 146 Solan Field source rocks 711 thermal history, Rona Ridge 616-618 appraisal 696 stratigraphy 700 uplift discovery 696 trap structure 696-699 East Irish Sea Basin 1387-1390 maturation history 711 Strathspey Field 1039, 1235 Faeroe Shetland Basin 601 reservoir rocks 705-706 vertical-cable seismic volcano complexes, North Atlantic 579-581 source rocks 711 method 1237-1238 well ties, North Sea 1268-1270 trap structure 696-699 results 1238-1240 Thalassinoides 1141, 1191, 1213 Solan Sandstone 695, 704-706, 710 stratigraphic geocellular model (SGM) thermal history reconstruction Sorvestlandet High 897 Brent Field methodology 349-350, 614-616 Sorvestnaget Basin 42 evaluation 1043-1045 results 616-623 source rocks 355-356, 476-485, 1325-1327 inputs 1041, 1042, 1043 North Atlantic margin 351-354 Cambro-Ordovician, Newfoundland West stretching factor (beta) 541 Northern England 354-355 512-513 Faeroe-Shetland Basin 587 West Shetland 1374 Carboniferous Irish Rockall Trough 414, 440 results discussed 355-357 East Irish Sea Basin 1384 NE Greenland 326, 328 use in migration studies 623-624 Erris Trough 463-464 NE Rockall Basin 401 thermal models 1317-1318 Newfoundland West 513 Rockall Trough 366-368, 373, 374, 375 see also heat flow model Southern Permian Basin 798-800 strike-slip faults analogue modelling Theta Graben 845, 847, 853, 856 Trent Field 814 method 216-217 Thistle Field 474 Cretaceous, Labrador Shelf 511 results 217-220 tidal facies 1191 Jurassic results discussed 221-224 Tiffany Field 474 Atlantic margin 1354 Stronsay Group 172, 176, 1369 Tilje Formation 1209, 1210, 1213 Central Graben 931, 1225 strontium isotope analysis 1129 facies analysis 1214 Erris Trough 464 strontium residual salt analysis 632 reservoir geometry modelling 1211-1216 Hebrides Basin 476, 480 Suilen Field 693 Tomma Formation 474 Irish Rockall Trough 440 Sula Sgeir Fault 536 Tommeliten Field 912, 913 Jeanne d'Arc Basin 473, 480 Sula Sgeir High 602 Tor Field 912, 913 Kimmeridge Clay 1340 Sullom Formation 1368, 1370 Tor Formation 474, 915, 917, 920, 923, 928, Minches Basin 476, 480 Surt Lineament 42, 263, 264 929, 941, 975, 980 NE Rockall Basin 387 Svalbard margin 404 depositional model 952 Newfoundland Grand Banks 502, 505, Svalbardian orogeny 250 fault controls on 952-953 507, 509 Sverdrup Basin 42 porosity 1000 Norwegian Central Graben 1325, 1333 synthetic aperture profiling 1245 porosity depth cube 956 Porcupine Basin 242, 472, 480 seismic response 945-947 Slyne Trough 476, 480 Table Head Group 513 South Arne Field 966-967, 969-970, 972, West of Shetland 651-653 Taconic orogeny 512 973 West Shetland 1377 Taenidium 1213 thickness 949, 950, 952 Jurassic/Cretaceous Tail End Graben 65, 898, 1030 Tornquist Line 10, 135 Barents Sea 250-252 Tampen Spur 827 trace fossils Faeroe-Shetland Basin 237 evolution 835-836 Beryl Formation 1189-1268 Halten terrace 233 faulting 836-837 SouthArne Field 966, 968 North Sea (North) 232 stratigraphy 827-828 Tilje/Are formations 1213 Rockall Trough 240 Draupne Formation 829-835 West Central Shelf 880 South Arne Field structural framework 828-829 Trans-European Fault Zone 135 appraisal 961-964 see also Zeta Structure transformation ratio 1327-1330 exploration 959-961 Tarbert Formation 93, 829, 1043, 1064, 1177 transgressive systems tract (TST) 1210 reservoir character 965-968 Tartan Field 849, 865-868, 869, 871 trap structures 148, 875-877, 929-931 reservoir fracturing 968-969 tectonically enhanced maximum flooding Barents Sea 252-254, 257 reservoir prediction 969-974 surfaces (TEMFS) 857-858 Elgin Field 1015 seismic section 969 Teichichnus 1141, 1142, 1191, 1213 Faeroe-Shetland Basin 556-557 structural setting 964-965 Telford Field 1075-1077 Franklin Field 1015-1018 trap mechanism 974-975 history of development 1077 Greenland (West) 323 South Brae Field 1200 reservoir engineering properties 1084-1086 Lowlander area 868, 872 South Halibut Trough 123, 125 reservoir geophysics 1081 Machar Field 999 South Morecambe Field 1383, 1387 reservoir zonation 1080-1081 Marnock Field 994 South Scott Field 149 sequence stratigraphy 1078-1080 Monan Field 999 South Solan Basin 694 stratal surfaces 1084 Mungo Field 996 South Viking Graben 119-120, 122 Telford Ridge 846 Newfoundland Grand Banks 507 South Wales Basin lithostratigraphy 778 TEMFS (tectonically enhanced maximum North Halibut Basin 863-865 South Whale Sub-basin 501-504, 505 flooding surfaces) 857-858 Scott area 870, 873, 874 Southern Permian Basin Terebellina 1189, 1190, 1191 Solan Field 696 699 Carboniferous rocks 798-800 Tern Field 1063-1064 South Arne Field 974-975 gases 800-805 reservoir rocks 1064-1066 South Piper area 865 Spekk Formation 267 seismic evaluation 1067-1068 Staffin Bay Formation 475 Tartan area 865-868, 869, 870 Stappen High 249 well technology 1069-1074 Trent Field 814-816 Statfjord East see Tampen Spur terpanes 308 Victory Field 715 Statfjord East Fault 837 Terra Nova Field 474 Voring Basin 323 Statfjord Formation 1039, 1040, 1177, 1235 Tertiary West of Shetland 656 lithospheric stretching 1250 Trent gasfield 800, 809, 810 reservoir model 1043 palaeogeography, Norwegian Sea 268-269 depositional model 816-820 Steensby Bjerg Formation 325 plays development drilling 809, 811 steranes 308 Irish Rockall Trough 443-444 exploration history 809 Storegga Slide 237 Norwegian Sea 270 geophysical data 814 Strathmore Field reservoirs, Barents Sea 256 reservoir rocks 816 appraisal 696 sediments, Rockall Trough 424 seismic section 815 depositional environment 701 stratigraphy, Central North Sea 190-191 source rocks 814 discovery 695-696 tectonic history stratigraphy 811-814 maturation history 711 Atlantic margin 1353-1354 trap structure 814 INDEX XXV11

Triassic use in Strathspey Field West Lewis High 386 lithostratigraphy method 1237-1238 West Lewis Ridge 396, 397-398 Irish Sea 206 results 1238-1240 West Orkney Basin 351-352 North Sea 206 Veslemoy High 42 West of Shetland minibasins, West Central Shelf 886-887 Vestbakken Volcanic Province 42 basin modelling reservoir rocks 993, 994 Vestfjorden Basin 42, 263 method 1373-1374 Banks Group 1235 Victory Field 645, 661 results 1374-1377 Barents Sea 254, 256 exploration history 713 formation pressures 1371-1373 East Irish Sea Basin 1384, 1386, 1387 reservoir properties structural setting 1367-1368 Faeroe-Shetland Basin 661 charge model 722-723 Tertiary sequence stratigraphy 1368-1371 Statfjord Formation 1039 depositional environment 719 West Shetland Basin 42, 602, 647, 694 Strathmore Field 700-704 hydrocarbons 721 chronostratigraphy 404 Tern Field 1066 lithology 715-719 thermal history reconstruction 352-353 Wytch Farm Field 1157 quality 720-721 West Shetland Platform 694 seal rocks, Wytch Farm Field 1157 stratigraphy 713-714 West Solan Basin 694 sediments structure 714-715 West Spitzbergen orogen 42 North Sea 202-204 Victory Formation 715, 777, 775, 720 West Sudurey 580 Slyne Trough 446-447 Victory Ridge 602 Western Graben 1030 source rocks, Barents Sea 250 Victory Transfer 42, 602 Western Platform 75 stratigraphy- Viking Graben 10, 42, 65, 232, 474, Westphalian Atlantic margin (North) 231 1347-1348 North Sea (South) 754-755, 772 Central North Sea 181 see also Beryl Embayment; Miller Field; Pennine/East Midlands 748-754 Elgin/Franklin Fields 1008 Nevis Field; Tampen Spur Westray Field 854 Trent Field 814 Villeperdue Field 474 Westray Group 1369 tectonics and palaeogeography 212-213 vitrinite reflectance (VR) 349-350, 614-617 Westray Ridge 42, 536, 602, 646, 647, 651, 653, Banff Field 977 Kimmeridge Clay of West Shetland 1375 672, 694, 1377 North Atlantic 75, 16, 19-20 North Atlantic margin studies 351-354 Westray Transfer Zone 42, 602 West of Shetland 647 Norwegian Sea 270 Whale Basin 501 Trichichnus 1141 Southern Permian Basin 800 Whitehurst Group 817 tritium tracers 1166-1167 volcaniclastics 581 Wick Sandstone Formation 1104, 1105 Troena Basin 263, 264 volcano complexes 579-581 wide aperture recording 1245 Tromso Basin 42 Voring Basin 42 Witch Ground Graben 720, 722, 475, 856, 1030 Trondelag Platform 83, 261, 263 exploration history 317-318 Base Cretaceous mapping 137-138 tuffs of West of Shetland 650-651 geological evolution 319-320 modelling structural evolution turbidites 902-903, 1093, 1116 hydrocarbon prospectivity 269-270 Cretaceous 143-146 magmatism 272 Jurassic 138-143 palaeogeography Tertiary 146 unconformities Cretaceous 267-268 models discussed 147-149 Base Cretaceous 1014 Jurassic 265-267 petroleum potential 133, 148-149 Cimmerian 117, 136 Tertiary 268-269 seismic studies 139, 143, 146, 147 Hardegsen 203, 213 prospectivity 227 stratigraphy 133-135 Hercynian 447 reservoir rocks 323 structure 135-137 North Sea Jurassic 117-118 stratigraphy 262-263 see also Britannia Field areal extent 119-123 Wytch Farm Field 474 causal mechanisms 127-129 structural evolution 56, 233-236, 263-265 tectonic setting 261-262 discovery 1157-1158 stratigraphic resolution 118-119 infill drilling 1169-1170 underplating, Rockall-Faeroe-Shetland area thermal history 270-271 trap types 323 reservoir characterization 1159-1160 586-588 see also Helland Hansen licence; Nyk High formation evaluation 1163-1165 Unst Basin 42 Voring Marginal High 42 miscible gas injection 1170-1171 upscaling problems 1044-1045 Voring Plateau 8 petrophysics 1163 Uralian orogeny 250 Voyager Formation 475 pressure 1165 USA see Appalachian basin; Eastern Interior production logging 1165-1166 Basin; Ouachita Basin Walls Boundary Fault 602 structure 1160-1161 Utgard High 264 Watts Bight Formation 513 tritium tracing 1166-1167 Utrost Ridge 263 Weald inversion 176 use of deviated wells 1167-1169 Utsira Formation 302 well technology development 1069-1074 Wyville-Thompson Ridge 42, 384, 392-395, 602 Utsira High 122 methodology 1265 evolution 395-397, 399 results 1268-1270 Vaila Formation 1369, 1370 Wessex Basin 176 XRD 339, 916 Valhall Field 912, 913, 914, 941, 949 West Central Graben 123, 125 chalk core details 952 salt tectonics 185 Yermak Plateau 255 cross section 954 West Central Shelf 880 Ymir Ridge 42, 392, 397 stratal thicknesses 952-953 effects of salt 890-892 stratigraphy 949-951 Jurassic provenance study 889-890 Zechstein basins of Europe 205 structure 951-952 seismic analysis 886-889 Zechstein Group 174, 695, 1008, 1138, 1299, Valhall Formation 1104, 1105, 1117 sequence stratigraphy 881-886 1384 Van Mijenforden Group 256 stratigraphy 880-881 salt tectonics 1032, 1033 Variscan Foreland 773, 779, 780 Tertiary folding 892 Trent Field 812 Variscan Front 42 West Ekofisk 912, 913 Zeta Fault and Ridge 111-113 Vema Dome 42, 265, 323 West Fladen Basin 847, 848, 849 Zeta Structure Verril Canyon Formation 502 West Flannan Basin 386 footwall uplift 109-111 vertical seismic profile 1055 West Halibut Basin 1102 tectonic setting 107-108 vertical-cable seismic 1236-1237 West Jan Mayen Fracture Zone 42 Zoepritz equation 1289 future potential 1240-1242 West Lewis Basin 384-385, 396, 399 Zoophycus 968