石油学报 ›› 2000, Vol. 21 ›› Issue (3): 41-44.DOI: 10.7623/syxb200003008

• 地质勘探 • 上一篇    下一篇

泥岩盖层压力封闭的演化特征及其研究意义

付广, 吕延防, 薛永超, 杨勉   

  1. 大庆石油学院 黑龙江安达151400
  • 收稿日期:1999-03-10 修回日期:1999-09-01 出版日期:2000-05-25 发布日期:2010-05-21
  • 作者简介:付广,男,1962年11月生.1984年毕业于大庆石油学院石油地质专业.现为大庆石油学院勘探系副教授.通讯处;黑龙江省安达市.
  • 基金资助:
    国家九·五科技攻关“大中型气田封盖研究”项目

EVOLUTION CHARACTERISTICS OF PRESSURE SEALING OF MUDSTONE CAPROCK AND ITS RESEARCH SIGNIFICANCE

FU Guang   

  1. Daqing Petroleum Institute
  • Received:1999-03-10 Revised:1999-09-01 Online:2000-05-25 Published:2010-05-21

摘要: 在深入研究泥岩盖层压力封闭形成机制的基础上,分析了泥岩盖层压力封闭油气的机理及其演化特征,提出了泥岩盖层压力封闭形成的起始时期和终止时期的概念,建立了确定方法.通过比较泥岩盖层压力封闭形成时期与烃源岩大量排气期的早晚,提出了泥岩盖层压力封闭有效性的概念,并建立了其研究方法,应用于松辽盆地三肇凹陷青山口组泥岩盖层压力封闭形成时期及有效性研究中,其结果表明泥岩盖层压力封闭的有效性好坏对天然气的聚集成藏具有重要意义.

关键词: 泥岩盖层, 压力封闭, 演化特征, 起始时期, 终止时期, 形成时期, 有效性

Abstract: Based on the detailed study of the formation mechanism of pressure sealing of mudstone caprock,analyses the pressure sealing mechanism of mudstone caprock and its evolution characteristics,puts forward the concepts of beginning period and stopping period of pressure sealing formation,and establishes the identifying method.By contrasting the periods of the formation of pressure sealing and the main hydrocarbon expulsion,puts forward the concept of pressure sealing efficiency of mudstone caprock,and establishes the studying method.The application of this method into the mudstone caprock of Qingshankou formation in Sanzhao sag of Songliao Basin indicates that the pressure sealing efficiency of mudstone caprock is of significance for gas accumulation.

Key words: mudstone caprock, pressure sealing, evolution characteristics, beginning period, stopping period, formation period, efficiency

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