玛18井区百口泉组砂体分布及储层特征研究  

Sand Bodies Distribution and Reservoir Characteristics of Baikouquan Formation in Ma18 Well Block

作　　者：朱键[1] 周雕[1] 朱越 丁艺[1] 钱根葆 邱子刚[1] ZHU Jian;ZHOU Diao;ZHU Yue;DING Yi;QIAN Genbao;QIU Zigang(Institute of Exploration and Development of Xinjiang Oilfield Company,PetroChina Company Limited,Karamay 834000,Xinjiang China)

机构地区：[1]中国石油天然气股份有限公司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》2020年第11期1747-1753,共7页Henan Science

基　　金：国家大型油气田及煤层气开发项目(2017ZX05070)。

摘　　要：玛湖凹陷百口泉组属于低渗致密储层,油藏特征受岩性控制,水平井压裂是主要的开发方式.为了有效地指导水平井生产,需要充分认识储层发育特征.通过岩心、测录井等资料,分析了不同小层沉积相发育特征,在此基础上,进一步研究了砂体分布和储层特征.研究表明,研究区百一段分流河道砂体垂向上以切叠式为主,平面上连片分布;百二段河道砂体垂向上接触式分布,平面上呈树枝状;百三段砂体以分散式分布为主.将储层分为三类:Ⅰ类储层主要发育在百一段和百二段;Ⅱ类储层主要发育在百二段;Ⅲ类储层主要发育在百三段.Ⅰ、Ⅱ类储层是研究区主要的储层类型.对水平井水平段钻遇储层研究发现,水平段主要以Ⅰ类储层水下分流河道砂体为主,产量明显较高,厚层的河道分流间溢岸砂次之,并进一步提出了针对研究区的水平井开发建议.Baikouquan Formation in Mahu Sag belongs to low permeability tight reservoir.Reservoir characteristics are controlled by lithology,and horizontal well fracturing is the main development method.In order to guide horizontal well production effectively,it is necessary to fully understand reservoir development characteristics.Based on the data of core and logging,the development characteristics of different sedimentary facies were analyzed,and then the sand body distribution and reservoir characteristics were further studied.The results show that the vertical distribution of distributary channel sand bodies in the study area is mainly in the form of cut-overlay type in T1b1,which is distributed contiguously on the plan.The sand bodies in T1b2 are dendritic on the plan,and distribute by contact.The distribution of sand bodies in T1 b3 are mainly separate.Reservoir can be divided into three types.The type ofⅠreservoir mainly develops in T1b1 and T1b2,the type ofⅡreservoir mainly develops in T1b2,and the typeⅢreservoir mainly develops in the T1b3.The type ofⅠandⅡreservoir are the main reservoir types in the study area.According to the horizontal section of the drill in the oilfield,the yield of horizontal section is mainly from underwater distributary channel sand body of the type ofⅠreservoir,and its yield is obviously higher.Suggestions for horizontal well development in the study area are put forward.

关 键 词：玛18井区 百口泉组 沉积相 砂体分布 储层特征 

分 类 号：TE313.3[石油与天然气工程—油气田开发工程]