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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2000  >  22(4): 297-301
HUANG Hai-ping. FORMING MECHANISM OF HYDROCARBON POOLS IN TAHE OILFIELD OF THE NORTHERN TARIM BASIN[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2000, 22(4): 297-301. doi: 10.11781/sysydz200004297
Citation: HUANG Hai-ping. FORMING MECHANISM OF HYDROCARBON POOLS IN TAHE OILFIELD OF THE NORTHERN TARIM BASIN[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2000, 22(4): 297-301. doi: 10.11781/sysydz200004297
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FORMING MECHANISM OF HYDROCARBON POOLS IN TAHE OILFIELD OF THE NORTHERN TARIM BASIN

doi: 10.11781/sysydz200004297

  • Department of Energy Resource Geology, China University of Geosciences, Beijing 100083, China

  • Received Date: 2000-02-14
  • Publish Date: 2000-10-25
    Abstract
  • High temperature GC analysis of high molecular weight hydrocarbons (HMWHCs) was performed on marginal mature source rock extractions from the Shahejie Formation, Damintun Depression, whose oil is particularly rich in wax. Organic composition and depositional environment are the main control factors for the formation of HMWHCs. The main maceral components in organic-rich samples (TOC>3.0%) are liptinite and exinite, deposited in relatively reduced environment. They contain high amount of waxes but dominated by macrocrystalline ones (centred at C29). Those organic-lean samples (TOC<2.0%) are dominated by vitrinite, deposited in a slightly oxidized environment. They contain lower amount of waxes but relatively rich in microcrystalline components. Besides normal alkanes, high amounts of branched/cyclic hydrocarbons have been detected in the region above C50.

     

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