THE MECHANISM OF NATURAL GAS FRACTION ENTRAPMENT AND ROLE IN STUDY ON NATURAL GAS RESERVOIRS FORMATION

doi:10.3863/j.issn.1000-2634.2001.05.02

西南石油大学学报(自然科学版) ›› 2001, Vol. 23 ›› Issue (5): 4-6.DOI: 10.3863/j.issn.1000-2634.2001.05.02

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THE MECHANISM OF NATURAL GAS FRACTION ENTRAPMENT AND ROLE IN STUDY ON NATURAL GAS RESERVOIRS FORMATION

CHEN Shi-jia FU Xiao-wen SHEN Zhao-guo LIN Feng

( Southwest Petroleum Inst, Nanchong Sichuan 637001,China)

Received:2001-03-07 Revised:1900-01-01 Online:2001-10-20 Published:2001-10-20

Abstract

Abstract:

Because of the episode of natural gas generation and structure evolution, the natural gas formed at different stages is different from each other in geochemical properties, natural gas generated from source rock at different evolution stage may be entrapped by trap formed at different geology phase. Natural gas or gas reservoirs formed at early stage may get lost or transferred due to late structure evolution, trap formed lately could only entrap natural gas generated from source rock at late stage, i.e., natural gas are entrapped by traps at different stages. The mechanism of natural gas fraction entrapment is introduced in the paper. According to natural gas geochemical properties of gas reservoirs from Tabei area in Tarim basin, authors explain the mechanism of natural gas fraction entrapment and its role in study on natural gas reservoir formation.

Key words: natural gas origin, trap forming, stage, fraction entrapment, study on reservoir forming

CLC Number:

TE122.3

CHEN Shi-jia FU Xiao-wen SHEN Zhao-guo LIN Feng. THE MECHANISM OF NATURAL GAS FRACTION ENTRAPMENT AND ROLE IN STUDY ON NATURAL GAS RESERVOIRS FORMATION[J]. 西南石油大学学报(自然科学版), 2001, 23(5): 4-6.

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THE MECHANISM OF NATURAL GAS FRACTION ENTRAPMENT AND ROLE IN STUDY ON NATURAL GAS RESERVOIRS FORMATION

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