松辽盆地北部泉三、四段低渗透储层孔隙度演化史.pdf

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1、矿物岩石地球化学通报·综述·BulletinofMineraiogy，PetrologyandGeochemistryVo1．31No．3，May．2O12松辽盆地北部泉三、四段低渗透储层孔隙度演化史刘贵满，孟元林，魏巍1．中国石油辽河油田公司锦州采油厂，辽宁锦州121209；2．东北石油大学地球科学学院，黑龙江大庆163318摘要：为了预测松辽盆地北部泉三、四段储层的孔隙度、恢复孔隙演化史，本文综合考虑沉积相和成岩作用对储层孔隙度的影响，建立了孔隙度关于沉积相指数、成岩指数和深度等多因素非线性模型，预测了

2、泉四段储层的孔隙度，恢复了孔隙演化史。结果表明，在泉四段储层填隙物高达16的条件下，孔隙度预测的平均绝对误差仅为1．84；在碎屑岩埋藏的早期，储层孔隙度主要受沉积相的影响，在晚期则受成岩作用的控制，次生孔隙主要发育在中成岩阶段A亚期和Az亚期的早期；同一层位的储层孔隙度从古到今逐渐减小，在松辽盆地北部的主要威藏期(嫩江期末)，中央坳陷泉四段Sql的储层主要属于中～高孔隙度储层，有利于油气藏的形成，在明水组沉积的后期才变为致密储层。关键词：储层；成岩作用；孔隙度预测；孔隙演化史；低渗透储层；致密砂岩气；松辽盆

3、地中图分类号：P618．130．21文献标识码：A文章编号：1007-2802(2012)03—0266-09PorosityEvolvingHistoryofLowPermeabilityReservoirsintheThirdandtheFourthMembersoftheQuantouFormationintheNorthernSongliaoBasinLIUGui—man，MENGYuan—lin0，WEIWei。1．JinzhoupetroleumproductionplantofLiaohe0i

4、lFieldCompanyLtd．，PetroChina，Panjin121209，China；2．NortheastPetroleumUniversity，Daqing，HeZ0gJag163318，ChinaAbstract：InordertopredictporositiesofthelowpermeabilityreservoirsoftheThirdandtheFourthMembersoftheQuantouFormationintheNorthernSongliaoBasinandtorest

5、ructuretheporosityevolvinghistoryoftheseres—ervoirs，thisstudyestablishedanewmulti—factors(includingsedimentaryfaciesindex，diagenesisindexanddepth)non-linearmode1．ThereservoirporosityoftheFourthMemberoftheQuantouFormationintheNorthernSongliaoBasinwaspredict

6、edandtheporosityevolvinghistorywasrestructuredusingthisnewmodel。Theresultsshowthattheaveragedabsoluteerrorofthepredictedporositiesis1．84forthereservoirswithpore—fillingratesupto16％，andthattheporositywasdominantlyeffectedbysedimentaryfaeiesduringtheearlybur

7、ialtimeandwasmainlycontrolledbydiagenesesduringthelateburialtime，andthatthesecondaryporositywasdevelopedinstagesofthemiddlediageneticstageA1andtheearlymiddlediageneticstageAz，andthattheporositydecreasedgraduallyfromancienttimestothepresent，andthatthereserv

8、oirintheSqloftheFourthMemberoftheQuantouFormationintheCentralDepressionwasmiddle—highporosityreservoiratthetimeofoilandgaspoolformingintheNorthernSongliaoBasinbutbecametightsandstonesafterthemiddletimeofMings