石油与天然气地质 ›› 1995, Vol. 16 ›› Issue (3): 252-258.doi: 10.11743/ogg19950309

• 论文 • 上一篇    下一篇

塔中石炭系碎屑岩成岩作用与孔隙演化

翟永红1, 刘生国1, 郭建华1, 肖传桃1, 罗传容2   

  1. 1. 江汉石油学院地质系, 湖北荆沙, 434102;
    2. 地质矿产部石油地质综合大队, 湖北荆沙, 434100
  • 收稿日期:1995-03-31 修回日期:1995-05-12 出版日期:1995-09-25 发布日期:2012-01-16

DIAGENESIS AND PORE EVOLUTION OF CARBONIFEROUS CLASTIC ROCKS IN CENTRAL TARIM

Zhai Yonghong1, Liu Shengguo1, Guo Jianhua1, Xiao Chuantao1, Luo Chuanrong2   

  1. 1. Jianghan Petroleum institute, JingSha, Hubei;
    2. Cmprehensive Research institute of Petroleum Geology MGMR, Jingsha Hubei
  • Received:1995-03-31 Revised:1995-05-12 Online:1995-09-25 Published:2012-01-16

PDF (PC)

459

被引次数

30

摘要：

塔中石炭系碎屑岩(CⅠ和CⅢ油组)以粘土矿物转化:溶蚀发育,压实、石英次生加大微弱,早期碳酸盐胶结缺乏,晚期碳酸盐局部充填为特征,原生孔隙得以最大限度的保存,约在15%左右。塔中各并石炭系处于晚成岩阶段,A1、A2期正是有机酸生成的高峰,溶蚀作用强烈,使原生孔隙锦上添花,孔隙度增至20%～23%,形成高孔高渗优质储层。

关键词: 成岩作用, 孔隙演化, 碎屑岩, 石炭系, 塔中

Abstract:

Carboniferous elastic rocks in Central Tarim Basin are characterized by clay mineraltransformation, well-developed dissolution, weak compaction and quartz secondary enlargement, lacking of carbonate cementation in early stage and local carbonate filling in late stage.Primary porosity was preserved to the maximum value of about 15%. The Carboniferoussequences drilled in Central Tarim are now in the late diagenetic stage (containing A1 and A2 stages). This stage is considered to be the peak period of organic acid production, and dissolution is intensive. This could considerably improve the primary porosity (increasing to 20%-23% ), thus forming high porosity and high permeability reservoirs.