松辽盆地东南部伏龙泉地区登娄库组致密储层特征及优质储层主控因素分析  

Analysis of tight reservoirs characteristics and main control factors of high-quality reservoirs in Denglouku Formation in Fulongquan area,southeastern Songliao Basin

作　　者：郝甜甜 李立立[3] 韩丰竹 楼仁兴[1] 张苡铭 刘应梅 张亚南 贾华男 HAO Tiantian;LI Lili;HAN Fengzhu;LOU Renxing;ZHANG Yiming;LIU Yingmei;ZHANG Yanan;JIA Huanan(College of Earth Sciences,Jilin University,Changchun 130061,China;East China Measurement and Control Branch,Sinopec Jingwei Co.,Ltd.,Yangzhou 225100,Jiangsu,China;Exploration and Development Research Institute of PetroChina Jilin Oilfield Company,Songyuan 138000,Jilin,China;Shengli Geological Logging Company,Sinopec Jingwei Co.,Ltd.,Dongying 257000,Shandong,China)

机构地区：[1]吉林大学地球科学学院,长春130061 [2]中石化经纬有限公司华东测控分公司,江苏扬州225100 [3]中国石油吉林油田分公司勘探开发研究院,吉林松原138000 [4]中石化经纬有限公司胜利地质录井公司,山东东营257000

出　　处：《世界地质》2024年第4期496-508,共13页World Geology

基　　金：吉林大学大学生创新创业训练计划项目(202310183228);国家青年科学家重点研发计划项目(2021YFC2900200);中国石油吉林油田分公司勘探开发研究院项目(JLYT-YJY-2022-FW-026)。

摘　　要：前人对松辽盆地东南部伏龙泉地区登娄库组致密储层的相关研究较为薄弱,制约了该区油气勘探开发工程部署。笔者采用岩矿鉴定、扫描电镜、矿物X射线衍射分析、常规压汞等技术,对其物性特征及优质储层主控因素进行详细研究。结果表明:致密砂岩碎屑颗粒组成总体特征为Q_(30.3)F_(34.3)R_(35.4),成分成熟度和结构成熟度均较低;储层以原生粒间孔和溶蚀孔隙为主;以低-特低孔、特低渗--致密为主,孔喉整体较细,主要为亚微米级和纳米级孔喉。综合常规压汞特征,致密储层分为Ⅰ类、Ⅱ类和Ⅲ类;优质储层主控因素主要包括有利岩性(粗粒碎屑岩和分选较好的细砂岩、粉砂岩),有利沉积微相(边滩、心滩和决口扇微相),有利微观孔隙结构(相对粗孔喉半径及高可动流体饱和度)。Previous studies on tight reservoirs in Denglouku Formation in Fulongquan area,southeastern Songliao Basin,were relatively weak,which restricted the deployment of oil and gas exploration and development in this area.The authors use rock-mineral determination,scanning electron microscopy,mineral X-ray diffraction analysis,conventional mercury injection and other technologies to conduct a detailed study on its physical properties and the main control factors of high-quality reservoirs.The results show that the general characteristics of the clastic grain composition of tight sandstones are Q_(30.3)F_(34.3)R_(35.4),and both the compositional maturity and structural maturity are low.The reservoirs are dominated by primary intergranular pores and dissolution pores.The pore throat is mainly composed of low to ultra-low pores and ultra-low permeability and compactness.The pore throat is generally fine,mainly submicron and nanometer pore throat.According to the characteristics of conventional mercury injection,tight reservoirs are classified intoⅠ,ⅡandⅢtypes.The main controlling factors of high-quality reservoirs mainly include favorable lithology(coarse clastic rock and well sorted fine sandstone and siltstone),favorable sedimentary microfacies(marginal beach,central beach and crevasse fan microfacies)and favorable microscopic pore structure(relative coarse pore throat radius and high movable fluid saturation).

关 键 词：致密储层 优质储层主控因素 登娄库组 伏龙泉地区 松辽盆地 

分 类 号：P618.3[天文地球—矿床学]