葵花岛构造异常地层压力成因机制

GENETIC MECHANISM OF ABNORMALFORMATION PRESSURE OF KUIHUADAO STRUCTURE

黎玉战 万智民 杨怀义 谢文彦 马常星 李明阁

Li Yuzhan Wan Zhimin Yang Huaiyi Xie Wenyan Ma Changxin Li Mingge

地质矿产部石油地质研究所, 北京100083 2. 辽河石油勘探局海洋石油勘探开发公司, 辽宁盘锦124010

Research Institute of Petroleum Geology, MGMR, Beijing 2. Marine Petroleum Exploration & Development Company.Liaohe Petroleum Exploration Administration

葵花岛构造沙河街组异常高压形成于东营组沉积末期。断层处于封闭状态是异常高压产生的首要条件,天然气持续不断的聚集是形成异常超压的主要因素,沉积物快速堆积、粘土矿物脱水和高温增压对形成异常高压都有一定的影响。

Overpressure in Shahejie formation of Kuihuadao structure was occurred in the end of deposition of Dongying formation. Closed faults were the first condition for occurrence of overpressure, and continuous accumulation of gas was the important factor for overpressure. And fast deposition of sediments, dehydration of clay minerals and heat pressureboosting also had some contribution to the abnormal formation pressure.

https://doi.org/10.11781/sysydz199603303