石油与天然气地质 ›› 1987, Vol. 8 ›› Issue (3): 233-242.doi: 10.11743/ogg19870301

• 论文 •    下一篇

泥岩压实曲线研究与油气运移条件分析

陈荷立, 罗晓容   

  1. 西北大学
  • 收稿日期:1987-01-03 出版日期:1987-09-25 发布日期:2012-01-16

STUDY OF MUDSTONE COMPACTION CURVES AND ANALYSIS OF MIGRATION CONDITIONS OF OIL AND GAS

Chen Heli, Luo Xiaorong   

  1. Northwest University
  • Received:1987-01-03 Online:1987-09-25 Published:2012-01-16

PDF (PC)

407

被引次数

46

摘要：

表示泥岩孔隙度(或反映孔隙度的其他物理量)与深度关系的泥岩压实曲线,是进行油气运移特别是初次运移分析时最常用和最为有效的基础资料之一。通过对泥岩压实曲线的分析,不仅可以掌握泥岩压实的现状并在一定程度上了解其压实历史,而且可以定量推断地下流体压力的分布现状和演化。后者已被普遍视为地下流体(包括油、气、水)运动的主宰。

Abstract:

Mudstone compaction curves are the most basic data in studying migration.especially the primary migration, of oil and gas. Through the study of somemain oil- and gas-bearing basins in our country, it has been found that most of the compaction curves can be divided into two sections: normal and abnormal. The abnormal section usually appears at the depth of more than 2000 m;its vertical and horizontal distributions are mainly controlled by sedimemary facies as well as lithology and their association. With the synthetical study of the compaction curves, the compaction history of source rocks can be recovered, furthermore, the primary hydrocarbon-escape depth and the development of effective soure rocks can be inferred. The pressure profiles, which are converted from the compaction curves, are the foundation to distinguish hydrodynamic system and to analyse the possible direction,degree and distance of oil and gas migration in that area.