西南石油大学学报(自然科学版) ›› 1993, Vol. 15 ›› Issue (3): 11-16.DOI: 10.3863/j.issn.1000-2634.1993.03.002

• 地质勘探 • 上一篇    下一篇

川南茅口灰岩岩溶特征与油气关系

颜其彬1 庞雯2

  

  1. 1.西南石油学院 2.西安石油学院
  • 收稿日期:1992-06-15 修回日期:1900-01-01 出版日期:1993-08-20 发布日期:1993-08-20
  • 通讯作者: 颜其彬

RELATIONSHIP BETWEEN OIL/GAS ACCUMULATION AND KARST FEATURES OF MAOKOU FORMATION IN LUZHOU AREA,SICHUAN

Yan Qi-bin Pang wen
  

  1. 1.Dept. of Oil Exploration 2.xi ‘an Petroleum Institute
  • Received:1992-06-15 Revised:1900-01-01 Online:1993-08-20 Published:1993-08-20
  • Contact: Yan Qi-bin

摘要:

沪州地区茅口组友宕岩溶分为三种炎型:层问古宕溶、阳顶古岩溶、缝洞系岩溶.后者足在
层问、阳顶古岩溶及联缝分布区基础上经过地下水的多期改过形成的,它是现今油气储渗的有效空问及运移通道,控制了该区天然气分布.岩溶作用的不均一性及茅口灰岩的致密性,使茅口灰岩纵向上形成多个储集层段,横向发育多个裂缝系统,气水分布复杂.无统一的气水界面.圈闭内有天然气产出,圈闭外也有良好的天然气显示.

关键词: 油气储集 岩溶 油气分布 茅口组

Abstract: The Karst system in Maokou formation (P) is classified into three different types,intra-formation paleokarstYangxin surface paleokarst,and fissure-cavern system karat. The lasttype is formed in intra-formation paleokarst£¬Yangxin surface paleokarst and fracture area£¬and during being transformed many times by underwater. It provides effective pore space for oil/gas accumulation and migration pathway, and controls the gas-water distribution in Maokou formation£¬in the area under study. The inhomogeneous develo}ent of the karat leads to forming a lot of vertical reservoir bebs and lots of lateral fissure-cavern systems. The relationship between gas and Water is complex,so there is no common watergas contact in the area. There is natural gas producing in the trap,and also good gas indication out of the trap.

Key words: 0il/gas accumulationiKarst 0il/gas distribution

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