摘要
大庆长垣表外储层相对发育,但动用难度大、整体动用程度不高.为有效提高该类储层动用程度,研究了表外储层的沉积、微观孔隙特征和渗流规律,进一步搞清了影响表外储层开发效果的主要原因及适合的开发方式,并立足现有井网开展了现场试验.结果表明,在油水井对应补孔缩小注采井距的基础上,采取精细控制压裂技术能够使表外储层动用厚度达到80％以上,可提高表外储层采收率3.6百分点.
The untabulated reservoirs in Daqing Placanticline are characterized by relatively well development, but they are rather difficult to develop and not high developed degree. In order to enhance the developed degree of these kinds of the reservoirs, the sedimentation, microscopic pore features and flow rules of the reservoirs are re- searched to make further clear of the influencing factors of the development effects and reasonable producing meth- ods, and moreover based on the existing well patterns, the field test is conducted. The results show that on the ba- sis of the corresponding re-perforation and shortening the well spacing between the injectors and producers, the a- dopted finely-controlled fracturing technique can make the reservoir developed thickness enlarge up to 80% or a- bove, and moreover the corresponding EOR can approach 3.6%.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2014年第4期57-61,共5页
Petroleum Geology & Oilfield Development in Daqing
关键词
表外储层
微观孔隙
渗流规律
精细控制压裂
untabulated reservoir
microscopic pore
flow/seepage rule/law
finely controlled fracturing
