葵花岛构造异常地层压力成因机制

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GENETIC MECHANISM OF ABNORMALFORMATION PRESSURE OF KUIHUADAO STRUCTURE

1.
Research Institute of Petroleum Geology, MGMR, Beijing
2. Marine Petroleum Exploration & Development Company.Liaohe Petroleum Exploration Administration

摘要: 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。
- 葵花岛构造 /
- 异常地层压力 /
- 断层活动 /
- 天然气聚集 /
- 地层沉积速度 /
- 粘土矿物脱水
Abstract: 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.

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