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鄂尔多斯盆地上古生界压力封存箱与天然气的富集规律
引用本文:李仲东,郝蜀民,李良,惠宽洋,过敏,王震.鄂尔多斯盆地上古生界压力封存箱与天然气的富集规律[J].石油与天然气地质,2007,28(4):466-472.
作者姓名:李仲东  郝蜀民  李良  惠宽洋  过敏  王震
作者单位:1. 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; 2. 中国石化, 华北油田分公司, 河南, 郑州 450006
基金项目:国家重点基础研究发展规划(973计划)煤层气项目
摘    要:根据鄂尔多斯盆地北部沉积埋藏史、成烃史、地热史和烃类包裹体分析、地层剥蚀厚度、沉积速度等资料,结合鄂尔多斯盆地上古生界普遍低压异常、储层致密、构造简单、含气层分散、天然气聚集受封存箱控制的特点,对盆地北部上古生界异常压力分布规律、压力成因及演化历史的研究认为,该区上古生界具备压力封存箱发育的地质环境。压力封存箱区域分布的特点是上古生界为一个高低压相间共存的复杂压力封存箱型含气系统,储层属异常低压-常压,泥岩仍保持幅度不等的高压。压力封存箱的形状、内幕结构、箱内砂泥岩的配置关系控制了箱内天然气藏的分布。

关 键 词:上古生界  压力封存箱  箱内天然气分布规律  鄂尔多斯盆地北部  
文章编号:0253-9985(2007)04-0466-07
收稿时间:2007-06-08
修稿时间:2007-06-08

Compartments in the Upper Paleozoic of northern Ordos basin and their relationship with gas enrichment
Li Zhongdong,Hao Shumin,Li Liang,Hui Kuanyang,Guo Min,Wang Zhen.Compartments in the Upper Paleozoic of northern Ordos basin and their relationship with gas enrichment[J].Oil & Gas Geology,2007,28(4):466-472.
Authors:Li Zhongdong  Hao Shumin  Li Liang  Hui Kuanyang  Guo Min  Wang Zhen
Affiliation:1. State Key Lab of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059; 2. SINOPEC North China Company, Zhengzhou, Henan 450006
Abstract:Based on previous research data of sedimentary burial history, hydrocarbon-generating history, geothermal history, inclusion analysis, denuded thickness, deposition velocity, and etc. , in the northern Ordos basin, a study is initiated with the aim of understanding the pattern of abnormal pressure distribution, and the genesis and evolution of pressure in the Upper Paleozoic of the basin by combining its characteristics of universal low abnormal pressure, tight reservoirs, simple sturctures, dis tion. The results confirm the existence of favorable per Paleozoic of the basin. The Upper Paleozoic is persed gas pays, and compartment-controlled gas accumulageological conditions for developing compartments in the Uprecognized to be a complicate gas system with high and low pressure coexisted in compartments, i. e. the reservoir belongs to normal pressure-abnormal low pressure, while the mudstone still maintains high pressure. The study also suggests that the shape, inner structure, and sandstone-mudstone relationship of the compartment decide the distribution of gas reservoirs in the compartment.
Keywords:Upper Paleozoic  pressure compartment  gas distribution inside compartment  northern Ordos basin
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