西南石油大学学报(自然科学版)

• 博导论评 • 上一篇    

顺托果勒柯坪塔格组储层成岩作用与孔隙演化

彭军1,张涵冰1 *,鲁明2,李斌1,夏青松1   

  1. 1. 西南石油大学地球科学与技术学院,四川成都610500
    2. 中国石油华北油田勘探开发研究院,河北任丘062552
  • 出版日期:2016-08-01 发布日期:2016-08-01
  • 通讯作者: 张涵冰,E-mail:zhanghb_swpu@163.com
  • 基金资助:

    国家科技重大专项(2011ZX05002 003)。

Diagenesis and Porosity Evolution of Kepingtage Formation in#br# Shuntuoguole Block

PENG Jun1, ZHANG Hanbing1*, LU Ming2, LI Bin1, XIA Qingsong1   

  1. 1. School of Geoscience and Technology,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    2. Exploration and Development Research Institute of Huabei Oilfield Company,PetroChina,Renqiu,Hebei 062552,China
  • Online:2016-08-01 Published:2016-08-01

摘要:

针对柯坪塔格组致密砂岩储层成岩作用过程复杂、孔隙演化规律尚待明确等问题,在储层特征研究基础上,
系统研究了储层成岩作用类型、成岩阶段划分及成岩序列,恢复其孔隙演化过程。结果表明:顺托果勒区块柯坪塔格
组储层以岩屑砂岩、岩屑石英砂岩及长石岩屑砂岩为主,物性较差。储层发育压实作用、胶结作用、溶蚀作用、交代作
用、油气充注及构造破裂作用,成岩阶段处于中成岩A 期,局部达到中成岩B 期。多种成岩作用共同控制着储层的孔
隙演化过程,压实作用对孔隙演化的影响最大,平均减孔21.82%;其次为胶结作用,使孔隙度降低约8.18%,其中钙质
胶结减孔6.06%,硅质胶结减孔1.80%,黏土矿物胶结影响不明显;沥青充填也导致储层损失了2.53% 的孔隙度;溶蚀
作用使孔隙度增加了3.91%。

关键词: 成岩作用, 孔隙演化, 致密砂岩, 柯坪塔格组, 顺托果勒区块

Abstract:

This paper systematically studies the diagenetic types,classification of diagenetic stages and diagenetic sequences,
and builds the porosity evolution process. The study shows that the Kepingtage Formation reservoir in Shuntuoguole area,
mainly consisting of lithic sandstone,the lithic quartz sandstone and feldspathic litharenite,is poor in physical property. The
reservoir,which is predominantly in diagenetic stage A with some parts reaching diagenetic stage B,was mainly controlled
by compaction,cementation,erosion,metasomatism,hydrocarbon charging,and tectonic fracturing. Multiple diagenesis factors
dominated the reservoir pore evolution:compaction was the most influential with average porosity reduction of 21.82%;
cementation was the secondary with porosity reduction of about 8.18% of which calcareous cementation reduced porosity by
6.06%,and silicic cementation reduced porosity by 1.80% while clay cementation gave insignificant influence;bitumen filling
led to 2.53% porosity loss;erosion increased porosity by 3.91%.

Key words: diagenesis, porosity evolution, tight sandstones, Kepingtage Formation, Shuntuoguole block

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