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Petroleum Geology and Resources of the West Siberian Basin, Russia

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Petroleum Geology and Resources of the West Siberian Basin, Russia Petroleum Geology and Resources of the West Siberian Basin, Russia By Gregory F. Ulmishek U.S. Geological Survey Bulletin 2201-G U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior Gale A. Norton, Secretary U.S. Geological Survey Charles G. Groat, Director U.S. Geological Survey, Reston Virginia 2003 For sale by U.S. Geological Survey Information Services Box 25286, Denver Federal Center Denver, CO 80225 For more information about the USGS and its products: Telephone: 1-888-ASK-USGS World Wide Web: http://www.usgs.gov/ Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government Although this report is in the public domain it contains copyrighted materials that are noted in the text. Permission to reproduce those items must be secured from the individual copyright owners. Contents Foreword................................................................................................................................................ 1 Abstract ................................................................................................................................................. 1 Introduction........................................................................................................................................... 2 Province Overview............................................................................................................................... 4 Province Location and Boundaries........................................................................................... 4 Tectono-Stratigraphic Development........................................................................................ 4 Present-Day Structure of Jurassic-Cretaceous Rocks......................................................... 13 Oil- and Gas-Producing Regions............................................................................................... 17 Total Petroleum Systems............................................................................................................ 21 Bazhenov-Neocomian Total Petroleum System............................................................................. 21 Discovery History......................................................................................................................... 21 Petroleum Occurrence................................................................................................................ 21 Source Rocks................................................................................................................................ 22 Reservoir Rocks............................................................................................................................ 25 Traps.............................................................................................................................................. 26 Assessment Units........................................................................................................................ 27 Upper Jurassic-Cretaceous Sandstones Assessment Unit.......................................... 27 Self-Sourced Bazhenov Fractured Reservoirs Assessment Unit................................. 27 Togur-Tyumen Total Petroleum System.......................................................................................... 28 Discovery History. ................................................................................................................ 28 Petroleum Occurrence........................................................................................................ 28 Source Rocks. .............................................................................................................................. 31 Reservoir Rocks. .......................................................................................................................... 36 Traps.............................................................................................................................................. 37 Assessment Units........................................................................................................................ 37 Northern West Siberian Mesozoic Composite Total Petroleum System.................................... 38 Discovery History......................................................................................................................... 38 Petroleum Occurrence................................................................................................................ 38 Source Rocks. .............................................................................................................................. 39 Reservoir Rocks. .......................................................................................................................... 41 Traps.............................................................................................................................................. 42 Assessment Units........................................................................................................................ 42 Northern West Siberian Onshore Gas Assessment Unit............................................... 43 South Kara Sea Offshore Assessment Unit..................................................................... 43 References Cited.................................................................................................................................. 44 Figures 1. Total petroleum systems and assessment units of West Siberian basin............................ 3 2. Basement tectonic map of West Siberian basin..................................................................... 6 3. Map showing Early–Middle Triassic rift system of West Siberian basin............................ 7 4. Columnar sections of Mesozoic rocks of West Siberian basin ............................................ 8 5. Lithofacies and isopach map of Lower-Middle Jurassic Tyumen Formation..................... 9 6. Lithofacies and isopach map of Callovian-Kimmeridgian rocks........................................... 11 7. Lithofacies and isopach map of Bazhenov Formation and stratigraphic equivalents..................................................................................................................................... 12 8. Example of Neocomian clinoforms in Middle Ob region........................................................ 13 9. Lithofacies and isopach map of upper Hauterivian-Barremian rocks ................................ 14 10. Map showing thickness of post-Jurassic sedimentary rocks of West Siberian basin..................................................................................................................... 15 11. Structural map of West Siberian basin..................................................................................... 16 IIIIII 12. Schematic east-west cross section through southern part of West Siberian basin...................................................................................................................... 17 13. Cross section through northern part of West Siberian basin ................................................ 18 14. Map showing oil and gas fields and structural prospects of Kara Sea............................... 19 15. Map showing petroleum regions and oil and gas fields of West Siberian basin mentioned in text ..................................................................................... 20 16. Map showing distribution of total organic carbon in Bazhenov Formation and stratigraphic equivalents of West Siberian basin ................................................................... 23 17. Map showing vitrinite reflectance at base of Bazhenov Formation of West Siberian basin...................................................................................................................... 24 18. Bazhenov-Neocomian Total Petroleum System events chart............................................... 25 19. Cross section through AS group of pays of Priob field........................................................... 28 20. Map and cross section of Talin field .......................................................................................... 32 21. Cross section of productive uppermost Paleozoic and Lower Jurassic rocks of southeastern part of West Siberian basin................................................................................ 33 22. Map showing distribution of total organic carbon in Lower Jurassic rocks of West Siberian basin...................................................................................................................... 34 23. Map showing vitrinite reflectance at top of Lower Jurassic rocks of West Siberian basin...................................................................................................................... 35 24. Togur-Tyumen Total Petroleum System events chart............................................................. 36 Tables 1. West Siberian basin, province 1174 assessment results summary–allocated resources ................................................................................................................................... 29 IV Petroleum Geology and Resources of the West Siberian Basin, Russia By Gregory F. Ulmishek Foreword Total petroleum system, two digits to the right of province code 1174 01 This report was prepared
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