石油与天然气地质 ›› 1996, Vol. 17 ›› Issue (2): 123-127.doi: 10.11743/ogg19960206

• 论文 • 上一篇    下一篇

塔里木盆地断裂的输导和封闭性

杨克明, 龚铭, 段铁军, 伍泓   

  1. 地质矿产部石油地质综合大队, 湖北荆沙 434100
  • 收稿日期:1995-12-14 修回日期:1996-02-10 出版日期:1996-06-25 发布日期:2012-01-16
  • 基金项目:

    “八五”国家科技攻关项目(85-101-02-03)成果

CARRYING AND SEALING PROPERTIES OF FAULTS IN TARIM BASIN

Yang Keming, Gong Ming, Duan Tiejun, Wu Hong   

  1. Comprehensive Research Institute of Petroleum Geology, MGMR, Jingsha, Huhei
  • Received:1995-12-14 Revised:1996-02-10 Online:1996-06-25 Published:2012-01-16

PDF (PC)

628

被引次数

33

摘要：

塔里木盆地断裂极为发育,它对油气的控制作用主要表现为输导性和封闭性。输导性表现为(1)沿断裂带有丰富的油气显示:(2)输导油气具交替性:(3)沟通下伏生油层与上覆储集层的联系:(4)断层切割众多的不同母质类型的生油层,造成圈闭中不同性质的源者混合。封闭性则因断裂系统及断层的几何学和运动学特征不同而存在差异。正断层的封闭性主要与断层内的物质流动,以及下盘储油层与上盘泥质岩对接有关:道断层的封闭性主要与断裂带断层泥、糜棱岩和断层一盘储集告与另一盘非渗透告对接有关。较高级别的大断裂对油气主要起输导作用,较低级别的小断裂对油气主要起封闭作用,它们共同构成了油气垂向运移的通道和聚集场所。

关键词: 塔里木盆地, 断裂, 输导, 封闭

Abstract:

Faults developed very well in Tarim Basin. The control of the faults over oil and gas would principally be realized by carrying and sealing. The carrying could be seen by following: (1) abundant hydrocarbon seepages occurred along faults: (2) alternation presented in carrying oil and gas: (3) connecting underlying source rocks with overlying reservoir : (4) faults cut numerous source beds of different kerogens, thus resulting in the mixing of source rocks of various attributes. The sealing may be distinct from each other due to the differences betweene geometric and kinematic properties of faults and fault systems. The sealing of normal faults is closely related to intra-fault material flowage and the butt joint of the lower wall reservoir with the upper wall argillite: the sealing of abnormal faults is related to the gouge, mylonite within the faults, and the butt joint of reservoir on one side of a fault with the impermeable rock on the other side. Larger faults usually have carrying function on hydrocarbon, and smaller faults generally have sealing function.