查干凹陷下白垩统层序地层格架与演化

郭彦如; 于均民; 樊太亮

doi:10.11743/ogg20020214

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查干凹陷下白垩统层序地层格架与演化
EVOLUTION AND SEQUENCE STRATIGRAPHIC FRAMEWORK OF LOWER CRETACEOUS IN CHAGAN DEPRESSION
2002年23卷第2期页码：166-169
网络首发：2002-06-25，

纸质出版：2002
DOI： 10.11743/ogg20020214
稿件说明：

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郭彦如, 于均民, 樊太亮. 查干凹陷下白垩统层序地层格架与演化[J]. 石油与天然气地质, 2002,23(2):166-169. DOI： 10.11743/ogg20020214.

Guo Yanru, Yu Junmin, Fan Tailiang. EVOLUTION AND SEQUENCE STRATIGRAPHIC FRAMEWORK OF LOWER CRETACEOUS IN CHAGAN DEPRESSION[J]. 2002, 23(2): 166-169. DOI： 10.11743/ogg20020214.

摘要

查干凹陷位于银额盆地东北角

依据地震、岩性、古生物、地化及测井等资料

其白垩系可划分出 1个一级层序、2个二级及 7个三级层序。巴音戈壁组一、二段沉积时期形成层序Ⅰ

Ⅱ;苏红图组沉积时期

形成层序Ⅲ

Ⅳ

Ⅴ;银根组沉积时期形成层序Ⅵ

Ⅶ。查干凹陷已有钻井显示

58%的油气层段分布于低位体系域中

30%的分布于高位体系域

12%的分布在湖侵体系域。

Abstract

Lower Cretaceous of Chagan depression

situated in the northwest corner of YinE basin

can be divided into one first-order sequence;two second-order sequences and seven third-order sequences according to its data of seism

lithology

palaeobiography

geochemistry and well-logging etc.Ⅰ annd Ⅱ order sequences were shaped during Ⅰ and Ⅱ member deposition of Bayin Gebi Formation

Ⅲ

Ⅳ and Ⅴ-order sequences were formed in the deposition of Suhongtu Formation while Ⅵ and Ⅶ-order sequences formed in the deposition of Yingen Formation.Well-logging data collected from Chagan depression indicate that 58% oil and gas bearing-formation are distributed in lowstand system tracts

30% in highstand system tracts and 12% in lake ingression system tracts.