A kinetic Geological Model of Oil Cracking Gas Formation in Feixianguan Oolitic Oil Reservoir in NE Sichuan Basin
Received date: 2010-03-18
Revised date: 2010-05-29
Online published: 2010-12-10
It has been proved that the natural gas in Feixianguan reservoir in NE Sichuan basin would be generated from oil cracking in past oil pools,by means of gas geochemistry and organic petrology of solid bitumen in reservoir.Pyrolysis in anhydrous closed system (gold tubes) was subjected to discuss gas generation from oil cracking,including yields of gaseous hydrocarbons and pyrobitumen.In combination with subsidence history,paleotemperature and Feixianguan tectonics,we extrapolated experimental kinetics parameter to geological conditions and established a kinetic geological model of gas generation of oil cracking in oil reservoir,and then the history of generation,migration and accumulation of oil cracking gas in oolitic reservoir was recurred.The kinetic geological model established in this paper can give an approach to understand the accumulation of oil cracking gas in past oil pools.
Key words: Oil cracking; Oolitic reservoir; Solid bitumen; Kinetics; NE Sichuan basin.
WANG Tong-Shan, GENG An-Song, LI Xia, XU Zhao-Hui, WANG Hong-Jun, WANG Ze-Cheng . A kinetic Geological Model of Oil Cracking Gas Formation in Feixianguan Oolitic Oil Reservoir in NE Sichuan Basin[J]. Natural Gas Geoscience, 2010 , 21(6) : 1014 -1023 . DOI: 10.11764/j.issn.1672-1926.2010.06.1014
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