西南石油大学学报(自然科学版) ›› 1998, Vol. 20 ›› Issue (3): 1-3.DOI: 10.3863/j.issn.1000-2634.1998.03.001

• 油气藏工程 •    下一篇

四川盆地灯影组储层原生孔隙内胶结物研究

王兴志 方少仙 侯方浩 黄继祥 李凌
  

  1. (西南石油学院勘探系,四川南充637001)
  • 收稿日期:1998-03-24 修回日期:1900-01-01 出版日期:1998-08-20 发布日期:1998-08-20
  • 通讯作者: 王兴志

A Study of the Cement in Primary Pores in Carbonate Reservoirs of Dengying Formation,Sichuan Basin

Wang Xing-zhi Fang Shao-xian Hou Fang-hao Huang Ji-xiang Li ling
  

  1. ( Dept. of Petroleum Exploration,SWPI, Sichuan, 637001)
  • Received:1998-03-24 Revised:1900-01-01 Online:1998-08-20 Published:1998-08-20
  • Contact: Wang Xing-zhi

摘要: 论述了四川盆地灯影组储层段内亮晶颗粒白云岩和蓝菌藻粘连白云岩中胶结物的发育情况:颗粒和蓝菌藻粘结组构间的原始孔隙在四期七种不同结构类型的白云石胶结物充填后基本消失;形成于不同成岩环境中的白云石胶结物,在产状、矿物学和地球化学等特征上虽有较大的差异,但总体又具有一定的变化趋势,即随埋藏深度的增加,胶结物在由孔隙边缘向中心充填的同时,晶粒变粗、颜色变浅、包裹体增多、温度升高、同位素值偏负、阴极发光强度变强。

关键词: 储层, 原生孔隙, 胶结物, 成岩过程, 四川盆地

Abstract: Within the reservoir intervals of the Dengying Formation, dolomitized grainstones and blue-mi-crobe-algal boundstones are well developed. Prima-
ry porosity in these rocks has almost completely dis-appeared as a result of precipitation of dolomite ce-ments. Although formed in different diagenetic envi-ronments and differing greatly in mineralogy and geochemistry, these dolomite cements exhibit a clear trend of variation: with increased burial and inward growth from the wall to the center of pores, the ce-ment becomes coarser in size and lighter in color,and contains more inclusions. Meanwhile, the iso-tope value becomes more negative and the cathodelu-minescence becomes brighter.

Key words: Reservoir, Primary porosity, Dolomite ce-ment, Diagenetic process, Sichuan basin

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