2017年12月第36卷第6期
大庆石油地质与开发
Petroleum Geology and Oilfield Development in Daqing
DOI:10.19597/J.ISSN.1000-3754.201701017
Dec.,2017 Vel. 36 No. 6
莱州湾凹陷中央构造带断层活动性及其控藏作用
王飞龙牛成民汤国民
（中海石油（中国）有限公司天津分公司勘探开发研究院，天津300452）
摘要：菜州湾凹陷中央构造带油气藏分布具有“纵向上分层，平面上分带”的特征。为研究同一构造带上油气藏分布差异性，利用前人对断层封闭性评价的方法对莱州湾回陷中央构造带上控藏断层的封闭性进行了系统评价，并采用了地球化学手段和盆地模拟手段将构造演化史与其油气成藏史相结合，厘清了莱州湾凹陷中央构造带的油气成藏规律。研究结果表明：断层活动史与油气充注过程相匹配是莱州湾凹陷中央构造带油气成藏的关键因素，早期活跃的断层活动有利于油气的向上运移聚集成藏，晚期活动较弱的断层相对利于油气的保存；不
在勘探过程中应结合断层的封堵性来确定勘探目的层位，降低勘探风险。关键词：断层活动性；断层封闭性；构造演化史；莱州湾凹陷
中图分类号：TE122.1
文献标识码：A
文章编号：1000-3754（2017）06-0001-09
ACTIVITYANDRESERVOIR-CONTROLLINGACTIONOFTHEFAULTS
INTHECENTRALSTRUCTUREBELTOFLAIZHOUBAYSAG
WANCFeilong，NIU Chengmin，TANG Guomin
(Exploration and Derelopment Research Institute of CNOOC Tianjin Branch, Tianjin 300452, China)
Abstract: The hydrocarbon reservoir distribution in the central structure belt of Laizhou Bay Sag is characterized by layering in longitude and zoning in latitude", in order to figure out the distribution differences in the same tectonic belt, with the help of the previous evaluating method of the fault sealing, the systematical evaluation was conducted for the sealing of the reservoir-controlling fault in the belt, and moreover by means of the geochemical and basin simulation methods, the tectonic evolution and the hydrocarbon accumulation histories were combined, the accumulating laws of the belt were made clear. The study achievements show that the history of the fault activi-ties and the petroleum enriched process are the key factors of the accumulation in the belt, the activities in the early period is favorable to the upward migration and accumulation of the oil and gas, while in the late stage the fault with rather weaker activities is prone to the preservation of the hydrocarbon; different fault sealing results in the differen-tial of the petroleum reservoir distribution in horizon, for the same fault with different sealings, the vertical layering property is dominated for the oil and gas, The process of the exploration, the explored target layer should be deter-
mined with the combination of the fault sealing so as to reduce the exploration risk. Key words: fault activity; fault sealing; tectonic evolution history; Laizhou Bay Sag
收稿日期：2017-01-06
改回日期：2017-09-26
（90020000910）作者简介：王飞龙，男，1981年生，高级工程师，从事油气地球化学研究。
E-mail: wangfl3@ cnooc, com. cn
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