永安地区断层封堵性研究  

Study on fault sealing in Yongan Area

作　　者：张琴[1] 唐颖[2] 张建丽[3] 梁绍敏[3] 

机构地区：[1]中国地质大学海相储层演化与油气富集机理教育部重点实验室,北京100083 [2]中国地质大学能源学院,北京100083 [3]中原油田分公司信息中心,河南濮阳457001

出　　处：《断块油气田》2010年第4期402-404,共3页Fault-Block Oil & Gas Field

基　　金：国家自然科学基金研究课题"页岩气聚集机理与成藏条件(40672087)";国家自然科学基金研究课题"碎屑岩盆地天然气聚集主要机理类型及条件转换"(40472073)

摘　　要：永安地区目前所发现的油藏(圈闭)均与断层有关,断层是复杂断块区构成圈闭的主要因素,对断层封堵性的综合研究已成为该地区油气勘探的重要手段。由于研究区的特殊性,区别于以往Allen1980年的剖面分析法和Lindays等1993年的泥岩涂抹系数法,本文主要采用易于获得的油田水资料,利用油田水的矿化度、脱硫系数、钠氯系数、碳酸盐岩平衡系数、变质系数和钙镁系数判别断层封堵性,结合断层在不同时期的生长指数判断断层的活动性。综合研究表明汉留、永2、永5断层为封堵断层,有利于油气的聚集和保存,而永1断层为开启断层不利于油气聚集和保存。The present-discovered reservoirs （traps） are all related to the faults, which are major factors to form trap in complex faulted zone. The comprehensive research of fault sealing has become the important methods in this petroleum exploration area. Because of the particularity of this study area, distinguished from Allen＇s profile analysis method and shale smear factor method of Lindsays, this paper adopts the formation water data to judge the fault sealing by using the oilfield water salinity, desulphurization factor, natrium and chlorine factor, balance factor of carbonate rock, metamorphic factor and calcium and magnesium factor. The paper also uses the growth index of the faults in different periods to predict the activity of fault. The study result indicates that Yong 5, Yong 2 and Hanliu faults are the sealed faults, which are favorable for the accumulation and preservation of oil and gas. But Yong 1 fault is open, which is unfavorable for the accumulation and preservation of oil and gas.

关 键 词：生长指数 断层发育特征 断层封堵性 油气成藏意义 永安地区 

分 类 号：TE122.12[石油与天然气工程—油气勘探]