新疆石油地质

新疆石油地质 ›› 2004, Vol. 25 ›› Issue (4): 362-364.

• 油气勘探 • 上一篇    下一篇

库车坳陷异常高压成因分析

王雅星, 柳广弟   

  1. 石油大学油气成藏机理教育部重点实验室,北京102249
  • 收稿日期:2003-10-21 发布日期:2021-01-06
  • 作者简介:王雅星(1963-).男,河北保定人,副教授,在读博士研究生,石油天然气地质,电话:010-89734480
  • 基金资助:
    国家"973”重点基础研究项目资助(编号:2001CB209103)

Origin of Adnormal High Pressure in Kuqa Depression

WANG Ya-xing, LIU Guang-di   

  1. Key Laboratory of Hydrocarbon Accumulation Mechanism, Ministry of Education, University of Petroleum, Beijing 102249. China
  • Received:2003-10-21 Published:2021-01-06

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摘要： 根据力学和热力学分析,构造挤压应力导致流体增压是间接通过储集岩体应变实现的,流体压力增量与构造挤压体应变具有正比关系。统计表明,库车坳陷北部中生界围闭的紧闲度及挤缩率与超压具有较高的正相关性。力学和构造地质学理论分析显示,围闭的紧闭程度及挤缩率可以表达岩层体应变。所有这些分析证实、构造挤压作用是导致库车坳陷北部中生界储集层流体增压的主要因素之一。

关键词: 库车坳陷, 异常压力, 构造, 流体, 应力

Abstract: Dynamics and thermodyrnamics analyses show that the incremental pore fluid pressure caused by tectonic compressive stress is real-ized by bulk strain of reservoir indirectly,both of which assune relations of direct ralio. The statistic analysis showed more intensive posilive correlation between the tightness or conpressive ratio and overpressures in Mesozoic lraps in 1ortherm Kuqa depression. The analysis of dynan-ics and lectonic geology proved that the tightness and compressive ratio of lraps could be used for description of the bulk strain. lt is suggesled that the Lectonic conipression is one of the main factors resulted in the incremental pore fluid pressure of Mesozoic reservoirs in ltorthern Kuqa depression.

Key words: Kuqa depression, abuormal pressure, structure, fluid, stress

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