郭旗西区储层非均质性及其对注水效果的影响  

Reservoir non-homogeneity and its effect on water injection effect in Guoqi West Area

作　　者：陈玲玲 王鹏 王涛 高飞 卜晓阳 孙萍 CHEN Ling-ling;WANG Peng;WANG Tao;GAO Fei;BU Xiao-yang;SUN Ping(Research Institute of Shaanxi Yanchang Petroleum(Group)Company Limited,Xi'an 710075,China)

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075

出　　处：《地下水》2024年第3期158-160,共3页Ground water

基　　金：“页岩油储层微-纳米孔喉系统量化表征及对可动流体赋存状态控制机理研究”(2022JQ-290)。

摘　　要：郭旗西区目前在注水开发中存在注水整体见效差、平面矛盾突出,部分井水窜、水淹严重等问题。为改善本区长6储层注水开发效果,达到控水稳油,从不同层面开展了储层非均质性对注水效果的影响研究。结果表明:本区长6低渗透砂岩储集层具有较强的非均质性。层内砂体呈正韵律分布,注入水易沿着底部高渗透段快速突进,造成底部过早水淹。层间非均质性强,砂层纵向分布不均匀,注入水单层突进的现象明显;平面上砂体发育程度不同,造成平面舌进现象突出。因此,注水开发过程中针对不同成因造成的储层非均质性,采取相应的开发措施,能够为提升注水开发效果提供重要的地质参考依据。Guoqi west area currently exists in the development of water injection in the injection of the overall effectiveness of poor,plane contradiction is prominent,part of the wells water scurrying,water flooding and other serious problems.In order to improve the development effect of water injection in the Chang6 reservoir in this area and achieve water control and oil stabilization,research on the influence of reservoir non-homogeneity on the effect of water injection has been carried out at different levels.The results show:The long six low permeability sandstone reservoirs in this area are stronger inhomogeneities.The sand body in the layer is distributed in a positive rhythm,and the injected water is easy to surge along the high permeability section at the bottom,resulting in premature flooding at the bottom.Strong non-homogeneity between layers,uneven longitudinal distribution of sand layers,and the phenomenon of single-layer sudden advance of injected water is obvious;The varying degree of sand body development on the planes results in a prominent tongue-in-plane phenomenon.Therefore,in the process of water injection development for different causes of reservoir inhomogeneity,to take corresponding development measures,can provide an important geological reference basis for improving the effect of water injection development.

关 键 词：郭旗西区 特低渗透砂岩储层 储层非均质性 注水开发 控水稳油 

分 类 号：P618.130.21[天文地球—矿床学]