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Identification Information:
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Citation:
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Citation Information:
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Originator: Wandrey, C.J.
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Publication Date: 2003
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Title: Sylhet-Kopili/Barail-Tipam Composite Total Petroleum System, Assam Geologic Province, India
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Geospatial Data Presentation Form: Online Reports or Chapters
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Online Linkage: http://pubs.usgs.gov/bul/2208/D/
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Publication Information:
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Publisher: U.S. Geological Survey
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Series Information:
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Series Name: U.S. Geological Survey Bulletin
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Issue Identification: B-2208-D
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Larger Work Citation:
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Citation Information:
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Originator: Wandrey, C. J.
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Publication Date: 2000
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Title: Petroleum Systems and Related Geologic Studies in Region 8, South Asia
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Geospatial Data Presentation Form: Online Reports or Chapters
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Series Information:
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Series Name: U.S. Geological Survey Bulletin
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Issue Identification: B-2208
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Description:
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Abstract: The Sylhet-Kopili/Barail-Tipam Composite Total Petroleum
system (TPS) (803401) is located in the Assam Province in northeasternmost India and includes the Assam Shelf south of the Brahmaputra River. The area is primarily a southeast-dipping shelf overthrust by the Naga Hills on the southeast and the Himalaya Mountain range to the north. The rocks that compose this TPS are those of the Sylhet-Kopili/Barail-Tipam composite petroleum system. These rocks are those of the Eocene-Oligocene Jaintia Group Sylhet and Kopili Formations, the Oligocene Barail Group, and the Oligocene-Miocene Surma and Tipam Groups. These groups include platform carbonates, shallow marine shales and sandstones, and the sandstones, siltstones, shales, and coals of deltaic and lagoonal facies.
Source rocks include the Sylhet and Kopili Formation shales, Barail Group coals and shales, and in the south the Surma Group shales. Total organic carbon content is generally low, averaging from 0.5 to 1.8 percent; it is as high as 9 percent in the Barail Coal Shales.
Maturities are generally low, from Ro (vitrinite reflectance) 0.45 to 0.7 percent where sampled. Maturity increases to the southeast near the Naga thrust fault and can be expected to be higher in the subthrust. Generation began in early Pliocene. Migration is primarily updip to the northwest (< 5 to 15 kilometers) along the northeast-trending slope of the Assam Shelf, and vertical migration occurs through reactivated basement-rooted faults associated with the plate collisions.
Reservoir rocks are carbonates of the Sylhet Formation, interbedded sandstones of the Kopili Formation and sandstones of the Barail, Surma, and Tipam Groups. Permeability ranges from less than 8 mD (millidarcies) to as high as 800 mD in the Tipam Group. Porosity ranges from less than 7 percent to 30 percent.
Traps are primarily anticlines and faulted anticlines with a few subtle stratigraphic traps. There is also a likelihood of anticlinal traps in the subthrust. Seals include interbedded Oligocene and Miocene shales and clays, and the thick clays of the Pliocene Gurjan Group.
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Purpose: In support of USGS Energy Program World Energy Project
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Time Period of Content:
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Time Period Information:
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Single Date/Time:
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Calendar Date: 2004
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Currentness Reference: Publication Date
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Status:
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Progress: Complete
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Maintenance and Update Frequency: Irregular
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Spatial Domain:
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Bounding Coordinates:
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West Bounding Coordinate:
93.189
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East Bounding Coordinate:
96.32
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North Bounding Coordinate:
27.909
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South Bounding Coordinate:
35.219
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Keywords:
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Theme:
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Theme Keyword Thesaurus: Gateway to the Earth Thesaurus
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Theme Keyword: Oil shale resources
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Theme Keyword: Oil sand resources
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Theme Keyword: Coalbed methane resources
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Theme Keyword: Natural gas resources
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Theme Keyword: Economic geology
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Theme:
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Theme Keyword Thesaurus: ArcIMS Metadata Server Theme Codes Thesaurus
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Theme Keyword: geoScientificInformation
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Theme Keyword: economy
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Theme Keyword: environment
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Theme:
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Theme Keyword Thesaurus: USGS Energy Program Themes Thesaurus
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Theme Keyword: Earth Science
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Theme Keyword: Natural Resources
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Theme Keyword: U.S. Geological Survey
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Theme Keyword: USGS
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Theme Keyword: Geology
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Theme Keyword: Oil
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Theme Keyword: Natural Gas
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Theme Keyword: Methane
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Theme Keyword: Petroleum
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Theme Keyword: Resource Assessment
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Theme:
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Theme Keyword Thesaurus: none
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Theme Keyword: World Petroleum Assessment
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Theme Keyword: World Energy Assessment
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Place:
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Place Keyword Thesaurus: USGS Energy Program Petroleum Assessment Units
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Place Keyword: Sylhet-Kopili/Barail-Tipam Composite Total Petroleum System 803401
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Place Keyword: Sylhet-Kopili/Barail-Tipam Composite, Assessment Unit 80340101
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Place Keyword: Assam, Province 8034
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Place Keyword: South Asia, Region 8
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Place:
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Place Keyword Thesaurus: none
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Place Keyword: India
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Access Constraints: none
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Use Constraints: none
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Point of Contact:
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Contact Information:
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Contact Organization Primary:
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Contact Organization: U.S. Geological Survey, Central Energy Resources Team
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Contact Person: Craig Wandrey
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Contact Address:
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Address Type: mailing address
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Address: U.S. Geological Survey, Box 25046, MS 939, Denver Federal Center
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City: Denver
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State or Province: Colorado
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Postal Code: 80225
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Contact Voice Telephone: (303) 236-5341
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Contact Electronic Mail Address: cwandrey@usgs.gov
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Distribution Information:
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Resource Description: Other Documents
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Metadata Reference Information:
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Metadata Date: 20050228
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Metadata Review Date: 20050228
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Metadata Contact:
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Contact Information:
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Contact Organization Primary:
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Contact Organization: U.S. Geological Survey, Central Energy Resources Team
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Contact Person: Chris Skinner
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Contact Address:
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Address Type: mailing address
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Address: U.S. Geological Survey, Box 25046, MS 939, Denver Federal Center
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City: Denver
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State or Province: Colorado
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Postal Code: 80225
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Contact Electronic Mail Address: datamgt@usgs.gov
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Contact Instructions: For inquiries regarding this document, please include the metadata contact person's name, dataset name, and publication series and number.
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Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
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Metadata Standard Version: FGDC-STD-001-1998
ESRI Metadata
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Esri:
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Metadata ID: {C0704E1F-2BD0-4938-8D5E-B00B40EB1B16}
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Creation Date: 20050302
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Creation Time: 15253900
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Synchronize Once: TRUE
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Published Document ID: {D6E640F5-74FB-43E4-9A9C-AEE1FB4C9F39}
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Published Status: Published