【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。更多还原

【Abstract】 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.更多还原