四川中江地区沙溪庙组沉积微相研究及有利含气相带预测

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A STUDY OF SEDIMENTARY MICROFACIES OF SHAXIMIAO FORMATION AND FORECASTING OF FAVOURABLE GAS-BEARING ZONE IN ZHONGJIANG AREA, SICHUAN PROVINCE

1.
Logging Station, Southwest Bureau of Petroleum Geology, CNSPC
2. Research Institute of Petroleum, Southwest Bureau of Petroleum Geology, CNSPC

摘要: 通过沉积相、测井相、地震相的综合研究,认为四川中江地区沙溪庙期为河流-湖泊相沉积环境,从早至晚经历了浅湖→半深湖→湖底扇→三角洲→曲流河环境演化过程。根据不同时期沉积微相特点及平面展布,指出了有利的含气砂体相带。
- 相标志 /
- 含气砂体 /
- 沙溪庙组
Abstract: Based on a synthetic study of sedimentary facies,logging facies and seismic facies,Shaximiao formation in Zhongjiang area,Sichuan province was considered to be deposited in a fluvial-lacustrine environment.It underwent evolution process of shallw lake,semi-deep lake,sublacustrine fan,delta to meande ring stream environments from early to late periods.The favourable zone for gas accumulation was pointed out according to the characteristics of sedimentary microfacies in different periods and their distribution.

[1]	郭正吾,邓康龄,韩永辉.四川盆地形成与演化研究.北京:地质出版社,1996.
[2]	钱奕中,陈洪德,刘文均.层序地层学理论和研究方法.成都:四川科学技术出版社,1994