西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (3): 89-95.

• 地质勘探 • 上一篇    下一篇

四川盆地中三叠统雷口坡组地层划分探讨

黄东1 张健2 杨光1 石学文1 汪华 1
  

  1. 1. 中国石油西南油气田公司勘探开发研究院,四川成都610051;
    2. 中国石油西南油气田公司勘探处,四川成都610051
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-06-20 发布日期:2011-06-20

The Discussion of Stratum Division and Stratum for the Leikoupo Formation of Middle Triassic in Sichuan Basin

HUANG Dong 1 ZHANG Jian 2 YANG Guang 1 SHI Xue-wen 1 WANG Hua 1
  

  1. 1. Research Institute of Exploration and Development, Southwest Branch, CNPC, Chengdu, Sichuan 601151, China
    2. Southwest Branch, CNPC, Chengdu, Sichuan 601151, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

摘要: 四川盆地中三叠统雷口坡组是四川盆地最早开采天然气、盐卤的层系之一,至今已探明3 个气藏并发现了大量含气构造,但随着勘探程度的不断深入,各勘探区块对雷口坡组顶底界面及地层内部划分认识上出现了一定分歧。通过野外地质调查、复查大量钻井资料以及大量分析化验资料,厘定和明确了雷口坡组顶底界面特征,同时根据岩性组合特征、电性特征、旋回特征对全盆地雷口坡组地层进行了划分方案和分层对比工作,这些工作的开展为全盆地雷口坡组整体资源的进一步勘探和开发奠定了基础。

关键词:

中三叠统雷口坡组, 界面特征, 岩性组合特征, 电性特征, 旋回特征, 划分方案

Abstract: The Leikoupo Formation of Middle Triassic in Sichuan Basin is one of the series of strata where natural gas and bittern are first explored. So far, three gas reservoirs have been proved and a large number of gas bearing structure

have been discovered, but with the continuously deep research of the exploration, there arise certain divergences in recogination to the bottom and top beds of Leikoupo Formation as well as the division of internal strata, which to some extent hindered the exploration and developing deployment of this layer series. This study redefines and clarifies the characteristics of bottom and top boundary by Leikoupo Formation through reexamining the drilling of Leikoupo well and field geological investigation and quantities of assay data. At the same time, division plan
and layering comparison work of Leikoupo Formation are done according to the lithologic association, electrical characteristics, cycle characteristics, thus laying a foundation to the further exploration and development of the
overall resources in Leikoupo Formation.

Key words:

Sichuan Basin, Leikoupo Formation, lithologic association characteristics, electrical characteristics, cycle characteristics, division plan

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