Department of the Interior Us Geological Survey
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DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY WEST SIBERIAN OIL-GAS PROVINCE by Peterson, James A. and o Clarke, James W. Open-File Report 89-192 This report is preliminary and has not been re" "owed for conformity with U.S. Geological Survey editorial standards. Any use of trade, product, or firm nair.es is for descriptive purposes only and does not imply endorsement by the U.S. Government. .Missoula, Montana '- 2Reston, VA Table of Contents Introduction......................................................... 1 Structure ......................................................... 3 Introduction................................................... 3 Basement....................................................... 4 Triassic rifts................................................. 8 Mesozoic-Cenozoic cover....................................... 11 Discussion.................................................... 15 Stratigraphy and Paleogeography..................................... 17 Introduction.................................................. 17 Basement...................................................... 17 Unmetamorphosed Paleozoic Rocks of Intermediate Complex........................... 17 Mesozoic-Cenozoic Sedimentary rocks........................... 29 Triassic................................................ 36 Lower and Middle Jurassic............................... 38 Upper Jurassic.......................................... 43 Cretaceous-Neocomian.................................... 47 Cretaceous-Aptian, Albian, and Cenomanian............... 57 Upper Cenozoic.......................................... 76 Petroleum Geology Introduction.................................................. 79 Intermediate Stage............................................ 93 Platformal Triassic........................................... 97 Jurassic...................................................... 98 Neocomian.................................................... 105 Aptian-Albian-Cenomanian..................................... 118 Conclusion ....................................................... 122 Acknowledgements................................................... 124 Selected References................................................ 125 List of Illustrations Page Figure 1. Location of We*t Siberian oil-gas province. .................. 2 Figure 2. Structure of pre-Jurassic basement of West Siberia. .......... 5 Figure 3. Rift systems of basement. .................................... 9 Figure 4. Profile of Koltogor-Urengoy graben. ......................... 10 Figure 5. Structure contours on the Upper Jurassic Bazhenov Formation. .................................................. 12 Figure 6. Structure contours on lower Aptian reflecting horizon. ...... 13 Figure 7. Super-order and first-order structures of West Siberian platform. ................................................... 14 Figure 8. Geographic map of West Siberia, showing political regions, main river systems, mountain ranges, and areas of fossil and Holocene permafros t. .................................... 18 Figure 9. Mesozoic paleogeographic map of West Siberian basin and adj acent arectS. ............................................. 19 Figure 10. Stratigraphic section of West Siberian oil-gas province. .... 20 Figure lOa. Geologic sections of West-Siberian oil-gas province. ........ 21 Figure lOb. Location map of sections showin in fig. lOa. ................ 23 Figure 11. Main basins of pre-Jurassic, West Siberian basin. ......... 24 Figure 12. Isopach map, pre-Jurassic Intermediate Complex. ............. 25 Figure 13. Generalized distribution of middle Paleozoic rocks ir. Intermediate Complex of West Siberian basin. ................ 26 Figure 14. Generalized, distribution of upper Paleozoic rocks in Intermediate Complex of West Siberian basin. .................. 27 Figure 15. Thickness of post-Paleozoic sedimentary cover, West Siberian basin. ............................................. 30 Figure 16. Thickness of post-Triassic sedineni.ary cover. Cross- section lines of figures 17-19 are shown. ................... 31 Figure 17. North-south structural-stratigraphic facies cross-section A-A'-A", South Kara Sea to south border of West Siberian basin.Sea level datum. ................. .............. 33-33a 11 Figure 18. West-east structural-stratigraphic facies cross-section B-B', near-Ural region across Middle Ob region tc eastern border of West Siberian basin. ............................ 34 Figure 19. Wesc-east structural-stratigraphic facies cross-section C-C', near-Ural regior; across Urengoy uplift area to northeast border of basin. ................................ 35 Figure 20. Thickness and general sedimentary facies, Triassic System. .. 37 Figure 21. Thickness, general sedimentary facies and oil and gas fields, Early and Middle Jurassic. ........................ 39 Figure 22. Paleogeographic-sedimentary environment map, Aalenian (Middle Jurassic). ........................................ 40 Figure 23. Paleogeographic-sedimentary environment map, Bajocian- Bathonian (Middle Jurassic). ............................... 41 Figure 24. Paleogeographic-sedimentary environment map, Callovian (Middle Jurassic). ........................................ 42 Figure 25. Thickness, general sedimentary facies, and oil and gas fields, Late Jurassic. ..................................... 44 Figure 26. Paleogeographic-sedimentary environment map, Oxfordian- Fimmerid~ian (Late Jurassic). ............................. 45 Figure 27. Paleogeographic-sedimentary environment map, Volgian (Late Jurassic). .......................................... 46 Figure 28. Thickness, general sedimentary facies, and oil and gas fields, Volgian (Late Jurassic) and lower Beiriasian (Early Cretaceous). .......................................... ... 48 Figure 29. Thickness and general sedimentary facies, Neocc,..ian (Earl} Cretaceous). .............................................. 49 Figure 30. Thickness, general sedimentary facies, and oil and gas fields, upper Berriasian-Lower Valanginian. ............... 50 Figure 31. Thickness, general sedimentary facies. and oil and gas" fields, upper Valanginian (Early Cretaceous). ............... 51 Figure 32. Paleogeographic-sedimentary environment map, Valanginian (Early Cretaceous). ....................................... 52 Figure 33. Thickness, general sedimentary facies, and oil and gas fields, lower Hauterivian (Early Cretaceous). ............. 53 Figure 34. Thickness, general sedimentary facies and oil and gas fields, upper Hauterivian-Barremian (Early Cretaceous). ... 54 111 Figure 35. Paleogeographic-sedimentary environment map, Kauterivian (Early Cretaceous). ....................................... 55 Figure 36, Paleogeographic-sedimentary environment map, Barremian (Early Cretaceous). ................................... ... 56 Figure 37. Thickr-is, general sedimentary fades, and oil end gas fields, Aptian (Early Cretaceous). .......................... 58 Figure 38. Paleogeographic-sedimentary environment map, Aptian (Early Cretaceous). ....................................... 59 Figure 39. Thickness, general sedimentary facies, and oil and gas fields, upper Albian-Cenomanian (Early and Late Cretaceous)................................................. 60 Figure 40. Paleogeographic-sedimentary environment map, Albian (Early Cretaceous). ........................................ 61 Figure 41. Paleogeographic-sedimentary environment map, Cenomanian (Late Cretaceous). ......................................... 62 Figure 42. Thickness and general sedimentary facies, Late Cretaceous without Cenomanian. ....................................... 64 Figure 43. Paleogeographic-sedimentary environment map, Turonian (Late Cretaceous). ........................................ 65 Figure 44. Paleogeographic-sedimentary c 'ironment map, Coniacian (Late Cretaceous). ........................................ 65 Figure 45. Paleographic-sedimentary environment map, Santonian (Late Cretaceous). .............................................. 67 Figure 46. Paleogeographic-sedimentary environment map, Campanian (Late Cretaceous). ........................................ 68 Figure 47. Paleogeographic-sedimentary environment mcp, Maastrichtian (Late Cretaceous). ........................................ 69 Figure 48. Paleogeographic-sedimentary environment map, Danian (Late Oreticeous-early Tertiary?). .............................. 70 Figure 49. Thickness and general sedimentary facies, Tertiary: Paleocene, Eocene, and early Oligocene. ................... 71 Figure 50. Paleogeographic-sedimentary environment map, Paleocene (early Tertiary). ......................................... 72 Figure 51. Paleogeographic-sediir.?ntary environment map, early and middle Eocene (early Tertiary). ............................ 73 IV Figure 52. Paleogeographic-sedimentary environment map, late Eocene (early Tertiary) ......................................... 74 Figure 53. Paleogeographic-sedimentary environment map, Oligocene (early Tertiary). .......................................... 75 Figure 54. Thickness and general sedimentary facies, late Tertiary, Neogene without late Pliocene. ............................ 77 Figure 55. Paleogeographic-sedimentary environment map, early and middle Miocene (late Tertiary). ........................... 78 Figure 56. Petroleum regions, West Siberian basin. ..................... 80 Figure 57. Oil and gas field map, showing main oil and gps fields, West Siberian