大孔道油藏聚驱后微观剩余油分布规律及提高采收率实验室研究  

LABORATORY RESEARCH ON MICROSCOPIC DISTRIBUTION OF RESIDUAL OIL AFTER POLYMER DRIVING AND HOW TO IMPROVE RECOVERY FACTOR FOR RESERVOIRS WITH BIG POROUS CHANNELS

作　　者：彭红利 周小平[2] 姚广聚[3] 孙良田[3] 

机构地区：[1]中石化西南分公司工程设计院 [2]西南石油学院石油工程学院 [3]油气藏地质及开发工程国家重点实验室.西南石油学院

出　　处：《天然气勘探与开发》2005年第3期62-65,1-2,共4页Natural Gas Exploration and Development

摘　　要：应用微观仿真模型驱油技术,模拟大孔道油藏,研究聚合物驱后剩余油的微观分布规律。讨论了注聚驱油后微观剩余油分布规律的研究方法、分布规律;对注聚后油藏的增产挖潜进行了实验室研究;用预交联凝胶颗粒进行单填砂长管驱油,提高采收率达15%;用预交联凝胶颗粒进行平面模型调驱结合驱油,提高采收率为2.4%左右;用预交联凝胶颗粒进行三并联调驱,提高采收率达1.5%。并且投入产出比达1∶45,可以考虑现场施工应用。The microscopic distribution of residual oil after polymer driving is studied by microscopic emulation model to simulate reservoirs with big porous channels .The study method of that and the distribution law are also discussed. It is studied in laboratory how to increase production and tap potential for the oil reservoirs after injecting polymer. With pre-cross-linking gel pellets to drive oil in the long pipe filled by sand, the recovery factor increases by 15%. With pre-cross-linking gel pellets to conduct dispensing and driving joint drive in plane model, the recovery factor increases by about 2.4%. With pre-cross-linking gel pellets to conduct 3 parallels of dispensation and drive, the recovery factor increases by 1.5%, and the input/output ratio reaches 1:45, which can be applied in the fields.

关 键 词：大孔道油藏 剩余油 分布规律 采收率 预交联凝胶颗粒 三并联调驱 

分 类 号：TE327[石油与天然气工程—油气田开发工程]