渤海湾盆地济阳坳陷沾车地区沙四上亚段湖相碳酸盐岩储层特征  

Characteristics of lacustrine carbonate rocks within the upper section of the fourth member of Shahejie Formation in Zhanhua-Chezhen area,Jiyang Depression,Bohai Bay Basin

作　　者：毕彩芹[1] 朱强[2] 胡志方[1] 林红梅[3] 石泉清[3] 郝运轻[4] 徐银波[1] 

机构地区：[1]中国地质调查局油气资源调查中心,北京100029 [2]中国石化集团国际石油勘探开发有限公司,北京100083 [3]中国石化胜利油田石油勘探开发研究院,山东东营270015 [4]中国石化石油勘探开发研究院,北京100083

出　　处：《石油实验地质》2017年第2期203-212,共10页Petroleum Geology & Experiment

基　　金：国家自然科学基金项目(41072096);国家科技重大专项(2011ZX05006-001)资助

摘　　要：渤海湾盆地济阳坳陷沾车地区沙四上亚段湖相碳酸盐岩环绕义和庄凸起大面积分布,发育了众多油藏,也拥有较多的钻井资料。沾车地区湖相碳酸盐岩储层岩石类型分为石灰岩、白云岩、混积岩3类,石灰岩又划分为内碎屑灰岩、生物碎屑灰岩、复合颗粒灰岩和泥晶灰岩等类型,白云岩主要为结晶白云岩,划分为藻屑白云岩、藻格架白云岩等,混积岩则为碳酸盐岩与碎屑岩的混合沉积;储层孔隙类型有原生孔隙、次生孔隙和裂缝3种;储层整体上具有低孔—低渗的特点,储层物性与岩石类型有很大关系;沉积环境是储层好坏的主控因素,压实、胶结和溶蚀等成岩作用对储层的改造起到了一定影响。储层主要受控于沉积古地理环境,义和庄凸起南部、东部的陡坡带储层发育最好;陈家庄凸起北部及义和庄凸起北部的缓坡带储层相对发育,礁、滩之间或者湖湾和半深水地区为差储层、非储层发育相带。Lacustrine carbonate rocks of the upper section of the fourth memer of Shahejie Formation （ES4） are extensive around the Yihezhuang high in the Zhanhua-Chezhen area in the Jiyang Depression, Bohai Bay Basin. With a great number of oil reservoir discoveries and plenty of drilling data, it has become an ideal location for lacustrine carbonate reservoir study. The carbonate rocks mainly include limestones （internal debris limestones, bioclastic lime-stones ,composite granular limestones and micritelimestones） , dolomites （ mainly crystalline dolomites, including algaldolomites, algalframework dolomites and so on） and mixed ones （ carbonate and clastic rocks）. Primary pores, secondary pores and fractures are the main pore types in the reservoir. Both porosity and permeability are low. Reservoir physical properties areclosely related to rock type. Sedimentary environment determines reservoir quality. Compaction, cementation and dissolution deform the reservoir. The sedimentary paleogeographic environmentis a main controlling factor. Reservoirs are most favorable onthe steep slope in the south and east of Yihezhuang high, less favorable on the gentle slope in the north of Chenjiazhuang and Yihezhuang highs, and poor or unfavorable between the reef and beach or in lake and semi-deep water areas.

关 键 词：储层特征 湖相碳酸盐岩 沙四上亚段 沾车地区 济阳坳陷 渤海湾盆地 

分 类 号：TE122.23[石油与天然气工程—油气勘探]