三类油层压裂驱油技术设计及效果研究  

The Study on Effect and Design of Fracture-Flooding in Class Ⅲ oil reservoirs

作　　者：王洪卫 闫百泉[3] 刘长宝[4] WANG Hong-wei;YAN Bai-quan;LIU Chang-bao(Petroleum Engineering College,Northeast Petroleum University,Daqing 163318,China;No.2Oil Production Plant,Daqing Oilfield Company Limited,PetroChina,Daqing 163000,China;Earth Science College,Northeast Petroleum University,Dagqing 163318,China;Yingtai Oil Production Plant,Jilin Oilfield Company Limited,PatroChina,Baicheng 137300,China)

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318 [2]大庆油田有限责任公司第一采油厂,黑龙江大庆163000 [3]东北石油大学地球科学学院,黑龙江大庆163318 [4]中国石油吉林油田英台采油厂,吉林白城137300

出　　处：《数学的实践与认识》2018年第24期157-167,共11页Mathematics in Practice and Theory

基　　金：国家油气重大专项(2009ZX05009-004-01)

摘　　要：大庆油田三类油层的高效开发技术研究是保障油田高产稳产的关键.通过对大庆油田萨中开发区三类油层的特点进行分析后创新性的提出压裂驱油技术,并通过现场试验取得了较好的开发效果.研究结果表明:萨中开发区三类油层砂体类型多、储层物性差,在开发过程中采出程度低、剩余油零散、吸附量大,化学驱难度大.因此创新性的提出了“压裂驱油”技术,通过压裂造长缝形成高速通道,将高效驱油剂经裂缝快速送至剩余油富集部位,边压裂造缝边沿程上下滤失,减少化学剂与地层之间接触时间和接触距离,以解决注入过程中化学剂性能沿程损失大,利用效率低,影响驱油效果的问题.通过现场试验结果表明,三类油层工艺上能够实现压裂驱油注入,且试注井组见到驱油效果,可推广应用于萨中开发区萨葡三类和高台子三类油层,作为增产增注技术快速挖潜零散井点剩余油.The research on the efficient development of Class III oil reservoirs in Daqing Oilfield is the key to ensure the stable production of oil fields.This paper analyzed the characteristics of Class III oil reservoirs of Sazhong Development Area in Daqing Oilfield,put forward the innovative technology of fracture-flooding,and got preferable development efforts through field tests.The results show that the Class III oil reservoirs in Sazhong Development Area have many different types of sand bodies but poor reservoir property.According to the development process,the recovery level is low,the residual oil is scattered,the adsorbed amount is much,and it is difficult to use chemical flooding.So the author innovatively put forward the "fracture-flooding" technology,which made long fractures by fracking,then formed high-speed channels,the efficient oil displacement agent was transported quickly to the enrichment of residual oil through the fractures.Creating artificial fractures and leaking-off along up and down reduces the contact time and contact distance between the chemical agent and strata to which resolved the high linear loss of the performance of chemical agent and low utilization efficiency that affected the flooding effect in the process of injection.According to the results of field tests,the technology of Class III oil reservoirs can achieve oil displacing and injecting during fracturing and the researchers did experiments with injector group which showed the flooding effect.That means the fracture-flooding can be applied as a stimulation method for injectors in Class III oil reservoirs of Gaotaizi,Saertu and Putaohua in Sazhong Development Area to tap the potential of residual oil in scattered wells.

关 键 词：三类油层 压裂驱油 碱表二元体系 剩余油 

分 类 号：TE357[石油与天然气工程—油气田开发工程]