Dynamics of natural gas pools of Carboniferous in the eastern Sichuan Basin

doi:10.7623/syxb200504003

Editorial office of ACTA PETROLEI SINICA ›› 2005, Vol. 26 ›› Issue (4): 12-16,22.DOI: 10.7623/syxb200504003

• Petroleum Exploration • Previous Articles Next Articles

Dynamics of natural gas pools of Carboniferous in the eastern Sichuan Basin

XU Guo-sheng, LIU Shu-gen, YUAN Hai-feng, WANG Wei

State Key Laboratory for Reservoir Geology and Development Engineering, Chengdu University of Technology, Chengdu 610059

Received:2004-10-25 Revised:2005-02-28 Online:2005-07-25 Published:2010-05-21

川东地区石炭系天然气成藏动力学研究

徐国盛, 刘树根, 袁海锋, 王威

成都理工大学油气藏地质及开发工程国家重点实验室四川成都 610059

作者简介:徐国盛,男,1962年2月生,1998年获成都理工学院博士学位,现主要从事石油地质教学与科研工作、教授、博士生导师.E-mail:XGS@CDUT.EDU.CN
基金资助:
国家重点基础研究发展规划(973)项目(G1999043309)“中国典型叠合盆地深部流体与浅部流体相互作用及其成藏效应”资助.

Abstract

Abstract: The eastern area of Sichuan Basin with ten complete tectonic belts is the relatively active tectonic belt.The main control factors for formation of the Carboniferous carbonate gas pools were analyzed with dynamics.The dynamic process of the Carboniferous gas pools in this area was recurred.The results show that the pressure coefficient of 1.30 for Yangxin Series of the Permian can be taken as the critical value for pressurizing the Carboniferous gas pools.The carboniferous gas pool has a regional cavity with normal pressure,which turn the large-scale folding deformational trap into stock bin.The Carboniferous gas pool is resulted from cross-formation pouring of natural gas driven by high pressure from adjacent stratum.Therefore,the dynamics of natural gas pools of the Carboniferous in the eastern Sichuan basin can be characterized by pressure seal,fluid pouring from adjacent stratum,and hydrocarbon accumulation by stock bin.

Key words: eastern Sichuan Basin, Carboniferous, gas pool formation, pressure seal, fluid pouring model, dynamics

摘要： 川东地区是四川盆地稳定地块中的相对构造活动区,发育10排高陡构造带.应用油气成藏动力学的原理和方法,剖析了石炭系碳酸盐岩储层油气成藏的主控因素,恢复与再现了石炭系天然气成藏动力学过程.研究成果表明,可将二叠系阳新统的现今流体压力系数1.30作为对石炭系气藏压力封闭的临界值.石炭系为具正常地层压力的区域孔洞型储集体,致使大规模的褶皱型构造圈闭成为仓储空间,石炭系捕集成藏的天然气又是在高压驱使下上下邻层流体跨层充注的结果.川东地区石炭系天然气的成藏动力学特征可归纳为:"压力封闭,流体上下充注,天然气仓储式成藏".

关键词: 川东地区, 石炭系, 天然气成藏, 压力封闭, 流体充注模式, 动力学

CLC Number:

TE112.12

XU Guo-sheng, LIU Shu-gen, YUAN Hai-feng, WANG Wei. Dynamics of natural gas pools of Carboniferous in the eastern Sichuan Basin[J]. Editorial office of ACTA PETROLEI SINICA, 2005, 26(4): 12-16,22.

徐国盛, 刘树根, 袁海锋, 王威. 川东地区石炭系天然气成藏动力学研究[J]. 石油学报, 2005, 26(4): 12-16,22.

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Dynamics of natural gas pools of Carboniferous in the eastern Sichuan Basin

川东地区石炭系天然气成藏动力学研究

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