天然气地球科学 ›› 2006, Vol. 17 ›› Issue (6): 760–764.doi: 10.11764/j.issn.1672-1926.2006.06.760

• 天然气地质学 • 上一篇    下一篇

砂-泥岩界面碳酸盐溶解-沉淀反应及其石油地质意义

曾溅辉 彭继林 邱楠生 朱志强   

  1. 石油大学石油天然气成藏机理教育部重点实验室、中国石油大学(北京)盆地与油藏研究中心,北京102249
  • 收稿日期:2006-04-30 修回日期:2006-07-26 出版日期:2006-12-10 发布日期:2006-12-10
  • 通讯作者: 曾溅辉zengjh@cup.edu.cn. E-mail:zengjh@cup.edu.cn.
  • 作者简介:曾溅辉(1962-),男,江西新干人,教授,博导,主要从事油气运移和聚集、盆地流体分析和地下水环境等方面的教学和科研工作.
  • 基金资助:

     国家自然科学基金项目(编号:40472075)资助.

CARBONATE DISSOLUTION-PRECIPITATION IN SANDSTONE-SHALECONTACT AND ITS PETROLEUM GEOLOGICAL MEANINGS

ZENG Jian-hui, PENG Ji-lin, QIU Nan-sheng, ZHU Zhi-qiang   

  1. Key Laboratory for Petroleum Accumulation Mechanism of Ministry of Education; Basin & Reservoir Research Center,Chinese University of Petroleum, Beijing 102249, China
  • Received:2006-04-30 Revised:2006-07-26 Online:2006-12-10 Published:2006-12-10

摘要:

沉积盆地中的砂-泥岩界面发生过强烈的碳酸盐溶解-沉淀反应,这种反应主要取决于相邻泥岩中流体的组成和性质、流体动力环境和砂岩与泥岩之间物理化学条件,如pH、Eh、P(CO2)、化学组成、温度、压力、孔隙度和渗透率、矿物组成和流体动力条件的差异性等。砂-泥岩界面碳酸盐溶解-沉淀反应的石油地质意义主要体现在:①影响储层物性;②影响油气的运移和充注;③有利于形成压力封存箱,对油气的保存具有重要的作用。

关键词: 砂-泥岩界面, 碳酸盐溶解-沉淀反应, 石油地质意义

Abstract:

A lot of studies had verified that there is strong carbonate dissolution-precipitation in sandstoneshale contact in sedimentary basin, carbonate dissolution-precipitation in sandstone-shale contact are mainly controlled by fluid composition and feature of shale near to sandstone, fluid dynamic environment and physical-chemical conditions between sandstone and shale, such as the differences of pH, Eh,P(CO2), composition ,temperature ,pressure, porosity, permeability, mineral and fluid dynamics between sandstone and shale. There are three petroleum geological meanings for carbonate dissolution-precipitation in sandstone-shale contact: ①to influence reservoir porosity and permeability; ②to influence oil and gas migration and inject; ③to be favorable to form pressure compartment and to protect oil and gas from escape.

Key words: Sandstone-shale contact, Carbonate dissolution-precipitation, Petroleum geological meaning.

中图分类号: 

  • TE122

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