扇三角洲前缘沉积相及其对单井产能影响分析——以玛湖坳陷玛18井区百口泉组为例  

Sedimentary Facies Characteristics and Its Effect on Single Well Production:An example of Baikouquan Formation,Ma18 Block in Mahu Sag

作　　者：卢志远 马世忠[1] 费繁旭 朱键[2] 周恒 张方[2] LU Zhiyuan;MA Shizhong;FEI Fanxu;ZHU Jian;ZHOU Heng;ZHANG Fang(School of Geosciences,Northeast Petroleum University,Daqing 163318,Heilongjiang China;Research Institute of Exploration and Development,Xinjiang Oilfield Company,Petro China,Karamay 834000,Xinjiang China)

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000

出　　处：《河南科学》2018年第8期1256-1261,共6页Henan Science

基　　金：国家自然科学基金(41272153)

摘　　要：玛18井区三叠系百口泉组是水平井重要的勘探开发层位,利用岩心、测井和地震等资料,在精细认识沉积微相的基础上,分析了沉积相演化特征,并尝试探讨不同沉积微相对水平井产能的影响.研究结果表明:在湖侵退积的沉积环境背景下,研究区主要发育扇三角洲前缘水下分流河道、分流间溢岸砂、远砂坝以及泥岩等沉积微相.水下分流河道砂体是主要储集空间,百口泉组沉积时期河道砂体具有强烈进积—加积到弱进积—加积再到退积的沉积演变过程.沉积微相对水平井产能有较大的影响,水下分流河道沉积微相砂体储层的产能明显较高,厚层分流间溢岸砂次之.研究为后期水平井部署及有针对性的射孔开发提供了参考.The Triassic Baikouquan formation of Ma18 block is important layer for horizontal well exploration and deployment.Using core,well logging and seismic data,on the basis of thorough understanding of sedimentary microfacies,the sedimentary facies evolution characteristics and the influence of different sedimentary microfacies on horizontal well productivity were analyzed.The results show that under the sedimentary environment of lake transgression,the sedimentary microfacies,such as subsea river channel,subsea bank sand body,far sand dam and mudstone mainly distributed in the study area.The subsea river channel is mainly reservoirs space in Ma18 block.River channel sandy has the sedimentary evolution of strong progradational-aggradation to weak progradationaggradation and then to retrogradation.Sedimentary microfacies have the continuing and big influence on horizontal well productivity.Subsea river channel reservoir is superior to other sedimentary microfacies,first class subsea bank sandy reservoir followed.The research provides a reference for later horizontal well deployment and perforation development.

关 键 词：沉积微相 沉积演化 水平井产能 玛18井区 玛湖凹陷 准噶尔盆地 

分 类 号：P634[天文地球—地质矿产勘探] TE313.3[天文地球—地质学]