西南石油大学学报(自然科学版) ›› 1989, Vol. 11 ›› Issue (3): 23-29.DOI: 10.3863/j.issn.1000-2634.1989.03.003

• 地质勘探 • 上一篇    下一篇

川弥87井二叠系茅口组的成岩后生变化及其对储集性能的影响

周龙芬
  

  1. (第二石油普查大队)
  • 收稿日期:1988-08-31 修回日期:1900-01-01 出版日期:1989-08-20 发布日期:1989-08-20
  • 通讯作者: 周龙芬

DIAGENETIC DEUTEROGENIC CHANGE!N MAOKOU FORMATION OF PERMIAN OF WELL MILE NO。87IN DAZU COUNTY,SICHUAN, AND ITS INFLUENCE ON RESERVOIR CHARACTERISTICS

Zhou Long-feng

  

  1. (The Second Oil Exploration Team)
  • Received:1988-08-31 Revised:1900-01-01 Online:1989-08-20 Published:1989-08-20
  • Contact: Zhou Long-feng

摘要: 四川盆地二叠系茅口组是主要的天然气产层,控制储层性能的因素较多且复杂。本文通过对川弥87井成岩后生作用的研究,认识该组气层的储集规律。通过岩芯和浮片研究认识到,胶结、压实、压溶、破坏性重结晶、硅化等作用对储层起破坏性作用;溶解、白云石化、后期重结晶等作用及构造裂球的形成时储层起建设性作用。作者建议,在研究区茅口组地层勘探过程中,应把注意力放在孔隙一裂隙型储层气藏上。

关键词: 成岩作用, 储层性能, 二叠系茅口组

Abstract: In Maokou formation of Permian exist the main gas reservoirs in Sich-
uan basin The factors controlling the reservoir characteristics are and complex. In this paper, we mainly discuss the diagenesis of well many Mile No, 87 in Dazu county in order to recognize the accumulation laws of gas reservoirs
By studying the cores and thin sections, we know that the main destr-
uctive factors for reservoirs are cementation, compaction, pressure solution
early stage destructive recrystal-lization and silicification; and that the
constructive factors for reservoirs are solubilization, dolomization,late
stage recrystallization and structure fractures,
Author suggests that in the exploration in Maokou formation more
attention be paid to the pore-fracture pattern gas reservoirs.

Key words: Diagenesis, Reservoir characteristics, Maokou Fprmation of Permian