西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (1): 71-76.

• 地质勘探 • 上一篇    下一篇

川西拗陷与北美致密砂岩气藏类比分析

陈昭国   

  1. 中国石化西南石油局,四川成都610016
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-02-01 发布日期:2012-02-01

Analogy Analysis of West Sichuan Depression and Northern AmericaSandstone Gas Rrservoirs

Chen Zhaoguo   

  1. Southwest Petroleum Bureau,SINOPEC,Chengdu,Sichuan 610016,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-02-01 Published:2012-02-01

摘要: 通过川西拗陷与北美致密砂岩含气盆地类比分析发现,两者在前陆盆地特征、岩石致密化和超压特征以及成
藏特征上既有其相似之处,也存在着差异。北美落基山地区致密砂岩气成藏简单,川西拗陷致密砂岩气成藏复杂。川
西拗陷在多阶段、多期次的构造活动演化背景下,以上三叠统须家河组超压气源为核心,在三维空间内随着岩性、岩石
致密化进程差异、构造形变和裂缝分布的变化、地压场的多期和多方式调整,造就多个纵向叠置的天然气成藏子系统
和多种类型气藏分布的格局。

关键词: 川西, 北美, 致密砂岩, 天然气, 类比

Abstract: Through the analogy analysis of Western Sichuan Depression and Northern America Sandstone Gas Reservoirs ,we
find that the both have similar characteristics and differences in foreland basin feature,rock tightening,abnormal pressure and
reservoir formation. Sandstone gas formation mechanism of Northern America Rocky Mountain region is simple but is complex
in Western Sichuan Depression. Under the background of multiple phases and tectonic activities,cored at the overpressure gas
source of Xujiahe Formation in upper Triassic,with the progress difference of lithology and densification in 3D space,the
change of deformation structure and fracture distribution,multiple-phase and multiple-mode adjustment of overpressure,the
distribution pattern of subsystem longitudinal overlay of many gas mineralization and multiple gas reservoir type thus formed.

Key words: west Sichuan, north America, tight Sandstone, natural gas, analogy analysis

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