东濮凹陷下第三系泥岩异常超压带微裂隙研究Study on microfissure of abnormal pressure zone in Tertiary mudstone of Dongpu Depression
王金萍,王峻,范海玲,李新海
WANG Jin-ping; et al. (Exploration and Development Science Institute of Zhongyuan Oilfield Subcompany; Puyang 457001 ; China);
摘要(Abstract):
主要论述了泥岩异常超压带内微裂隙的几种确定方法、分布及成藏机制的研究。表明东濮凹陷异常超压带微裂隙排烃带垂向分布在3 300~4 400 m之间,横向上区域性分布。同时,在微裂隙带内,泥岩孔隙度、伊蒙混层矿物含量、氯仿沥青“A”/TOC和20S/(20S+20R)C29等值出现较明显的低值,说明该带出现油气运移。提出了泥岩混相涌流成藏模式。
This paper mainly discussed several methods used to decide microfissure, its distribution and reservoir-forming mechanism in abnormal pressure zone in mudstone. It was showed that expulsion zone was distributed between 3 300-4 400 m vertically and was regional laterally. Furthermore, to mudstone porosity, mineral content of illite mixed layer, chloroform bitumen "A" /TOC and 20S/ (20S+20R) C29 etc. in microfissure zone, the values were low, which indicated that hydrocarbon migration had occurred in this are-a. Thus it was considered that the reservoir was formed by mudstone miscible surge.
关键词(KeyWords):
异常超压带;微裂隙排烃带;成藏模式
abnormal pressure zone; microfissure expulsion zone; reservoir-forming pattern
基金项目(Foundation):
作者(Authors):
王金萍,王峻,范海玲,李新海
WANG Jin-ping; et al. (Exploration and Development Science Institute of Zhongyuan Oilfield Subcompany; Puyang 457001 ; China);
- 王金萍
- 王峻
- 范海玲
- 李新海
WANG Jin-ping - et al. (Exploration and Development Science Institute of Zhongyuan Oilfield Subcompany
- Puyang 457001
- China)
- 王金萍
- 王峻
- 范海玲
- 李新海
WANG Jin-ping - et al. (Exploration and Development Science Institute of Zhongyuan Oilfield Subcompany
- Puyang 457001
- China)