塔里木盆地库车坳陷天然气高压封存箱

徐士林,吕修祥,周新源,马玉杰,杨明慧,刘洛夫

doi:10.11764/j.issn.1672-1926.2003.05.362

天然气地球科学 >

2003 , Vol. 14 >Issue 5: 362 - 365

DOI: https://doi.org/10.11764/j.issn.1672-1926.2003.05.362

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塔里木盆地库车坳陷天然气高压封存箱

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1．石油大学盆地与油藏研究中心，北京 102249；2．石油大学石油天然气成藏机理教育部重点实验室，北京 102249；3．中国石油塔里木油田分公司，新疆库尔勒 841000

徐士林(1976-)，男，江苏涟水人，博士生，主要从事油气形成与分布研究

收稿日期: 2003-04-07

修回日期: 2003-07-10

网络出版日期: 2003-10-20

基金资助

“十五”国家重点科技攻关项目（编号：2001BA605A-02-03-03-04）资助.

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THE OVERPRESSURE COMPARTMENTS ON NATURAL GAS OF KUQA DEPRESSION IN TARIM BASIN

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1. Basin and Research Center，University of Petroleum，Beijing 102249，China；2. Key Laboratory for Petroleum Entrapment Mechanism in Ministry of Education，University of Petroleum，Beijing 102249，China；3. Branch of Tarim Oilfield Company，CNPC，Kverle 841000, China

Received date: 2003-04-07

Revised date: 2003-07-10

Online published: 2003-10-20

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摘要

流体封存箱的概念为正确认识盆地油气运移和聚集过程以及油气分布规律提供了一种新的思维。库车坳陷的纵向压力结构表现为逐层升高的3层台阶式(3带式)压力结构,说明该地区存在流体封存箱。其中:封存箱的顶板由第三系的膏盐岩和含膏泥岩地层构成,该顶板明显地受岩性控制,不具有近水平、穿时代和穿岩性的现象;顶板之下是具有异常高压力的产气层段;封存箱的边部封隔带由断层来充当。库车坳陷高压气藏的成藏机制决定了该地区的高压气藏属于箱内运聚成藏模式。

关键词： 塔里木盆地; 库车坳陷; 异常高压; 封存箱; 成藏模式

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徐士林,吕修祥,周新源,马玉杰,杨明慧,刘洛夫 . 塔里木盆地库车坳陷天然气高压封存箱[J]. 天然气地球科学, 2003 , 14(5) : 362 -365 . DOI: 10.11764/j.issn.1672-1926.2003.05.362

Abstract

The concept of fluid compartment offers a new thought to accurately understand the petroleum migration and accumulation processes and distribution law in basin. The longitudinal pressure of Kuqa depression can be divided into three zones and characterized by three steps rising gradually by layer. This kind of difference obviously indicates that the fluid compartments occur in this area. The top sealing layers of the compartments are composed of gypsolyte and salt rock and gypsum-bearing mudstone of Tertiary system. They are controlled by lithology and not characterized by horizontal distribution, diachronism and transformation. The gas producing intervals with overpressure are overlain by the top sealing layers. The faults act as the side sealing boards of the fluid compartments. The entrapment mechanism of the overpressure gas reservoirs determines that the overpressure gas reservoirs belong to the entrapment pattern inside compartment.

Key words： Tarim basin; Kuqa depression; Overpressure; Fluid compartment; Entrapment pattern.

参考文献

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[4] 肖香娇，唐明龙.塔里木盆地将成为中国陆上最大的产气区[J].天然气地球科学，2003，14（1）：35-38.
[5]周兴熙. 库车坳陷第三系盐膏质盖层特征及其对油气成藏的控制作用[J]. 古地理学报，2000，2（4）：51-57.
[6]柳广弟，郝石生. 塔里木盆地的流体封存箱及其石油地质意义[A]. 油地球科学技术进展论文集[C]. 北京：石油工业出版社，1996.
[7]周兴熙. 塔里木盆地库车油气系统中、新生界的流体压力结构和油气成藏机制[J]. 地学前缘，2001，8（4）：351-361.
[8]郝石生. 封存箱[J]. 中国海上油气（地质），1993，7（1）：61-69.

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