New geological understandings and major hydrocarbon discoveries in the complex fault zone of Bohai Sea

doi:10.7623/syxb2016S1003

Acta Petrolei Sinica ›› 2016, Vol. 37 ›› Issue (S1): 22-33.DOI: 10.7623/syxb2016S1003

• Petroleum Exploration • Previous Articles Next Articles

New geological understandings and major hydrocarbon discoveries in the complex fault zone of Bohai Sea

Xia Qinglong, Xu Changgui

Tianjin Branch, CNOOC China Limited, Tianjin 300452, China

Received:2016-03-04 Revised:2016-06-15 Online:2016-10-31 Published:2016-11-30

渤海海域复杂断裂带地质认识创新与油气重大发现

夏庆龙, 徐长贵

中海石油(中国)有限公司天津分公司天津 300452

通讯作者: 徐长贵,男,1971年10月生,1995年获河北地质学院学士学位,2006年获中国地质大学(北京)博士学位,现为中国海洋石油总公司勘探专家、教授级高级工程师,主要从事石油地质与勘探研究。Email:xuchg@cnooc.com.cn
作者简介:夏庆龙,男,1964年4月生,1986年获成都地质学院学士学位,2007年获中国科学院博士学位,现为中海石油(中国)有限公司天津分公司常务副总经理、教授级高级工程师,主要从事石油天然气地质综合研究及油气勘探管理工作。Email:xiaql@cnooc.com.cn
基金资助:
国家重大科技专项“近海大中型油气田形成条件与分布”（2011ZX05023-006）资助。

Abstract

Abstract:

The offshore Bohai Bay Basin is significantly different from surrounding onshore depressions in basic geological characteristics, and the most typical difference lies on the former's complexly developed extension and strike-slip fault system. Such complex fault system is mainly controlled by NE-trending Tanlu fault zone and NW-trending Zhangjiakou-Penglai fault zone, and has an extension-strike-slip dual driver genesis mechanism, with relatively obvious planar and vertical variations in tectonic form and developmental evolution. Complexity and variability of this fault system has a direct impact on hydrocarbon accumulation in the area. since the 11th Five-Year Plan (2006-2010), a sustained systematic research on the Bohai Sea complex fault zone has gained a number of innovative notions on geology, e.g., pressure-increasing control traps in the strike-slip transfer zone, main hydrocarbon accumulation horizons controlled by fault zone mobility, high quality reservoirs within the fault zone controlled by "source-sink system", shallow high-quality reservoir-cap associations controlled by late movement in the complex fault zone, and hydrocarbon migration controlled by strike-slip adjustment faults. These understandings directly guides the discoveries of a number of large and medium-sized oil and gas fields in Bohai Sea, and their practicality and values are also testified by exploration practice.

Key words: Bohai Sea, complex fault zone, source-sink system, strike-slip transfer zone, accumulation

摘要：

渤海湾盆地海域在基础地质特征上与周围陆上坳陷存在显著差异，其中最为典型的差异是其发育复杂的伸展与走滑断裂系统。这一复杂断裂系统主要受控于NE向郯庐断裂带和NW向张家口-蓬莱断裂带、具有伸展-走滑双动力成因机制，在其构造形态和发育演化上存在较为明显的平面和纵向差异性。断裂系统的复杂性与差异性直接影响了区内油气聚集规律。“十一五”（2006-2010年）以来，针对渤海海域复杂断裂带的系统化持续研究获得了诸多创新性地质认识，诸如增压型走滑转换带控圈；断裂带活动性控制油气的主要富集层位；断裂带内“源-汇体系”控制优质储层；复杂断裂带晚期活动控制浅层优质储-盖组合；走滑调节断层控制油气运移等认识。这些认识直接指导了渤海油田多个大中型油气田的发现，同时也被勘探实践证实其实用性和价值。

关键词: 渤海, 复杂断裂带, 源-汇体系, 走滑转换带, 成藏

CLC Number:

TE121

Xia Qinglong, Xu Changgui. New geological understandings and major hydrocarbon discoveries in the complex fault zone of Bohai Sea[J]. Acta Petrolei Sinica, 2016, 37(S1): 22-33.

夏庆龙, 徐长贵. 渤海海域复杂断裂带地质认识创新与油气重大发现[J]. 石油学报, 2016, 37(S1): 22-33.

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New geological understandings and major hydrocarbon discoveries in the complex fault zone of Bohai Sea

渤海海域复杂断裂带地质认识创新与油气重大发现

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