摘要
为了探索薄差储层储量有效动用的技术途径,解决油田开发过程中的实际问题,明确注采井组对应压裂的增产效果及最优裂缝参数,采用以电模拟实验为主、数值模拟为辅的方法,对注采井组对应压裂的增产效果进行评价,并得出了在"四注一采"井组中注采井组对应压裂的最优裂缝参数。结果表明,对于同等的压裂规模,注采井组对应压裂的增产效果优于单独压裂油井,单独压裂油井的增产效果优于单独压裂水井;"四注一采"井组的注采井组对应压裂的最佳压裂规模组合为:油井裂缝穿透比42%、水井裂缝穿透比13%;注采井组对应压裂的最优裂缝导流能力为40μm^2·cm。故对于薄差储层,采用注采井组对应压裂技术进行改造,具有良好的效果,并在注采井组对应压裂时,应以油井压裂为主。实验研究结果为薄差储层注采井组对应压裂的裂缝参数设计提供了有效的参考,对于提高老油田表外储层的开发效果具有重要的现实意义。
In order to explore the technical way of the effective use of the reserves of the thin reservoir,make clear the optimum fracture parameters of the injection production well group corresponding to the fracturing,and use the method of electrical simulation experiment and the numerical simulation to evaluate the effect.The optimal fracture parameters corresponding to fracturing are obtained in the well group of“four injection and one production”.The results show that,for the same fracturing scale,the production efficiency of the injection production well group is better than that of the single fracturing well,and the effect of the individual fracturing well is better than that of the individual fracturing well.The injection production well group corresponds to the fracturing,and the optimum fracturing scale combination is 42%of the oil well fracture penetration ratio and the fracture wear of the well.The penetration ratio is 13%.The numerical simulation method shows that the optimal fracture conductivity is 40μm 2·cm.Therefore,for the thin and poor reservoir,it has good effect to adopt the fracturing technique of injection and production well group,and the oil well fracturing should be the main factor in the fracturing of the injection and production well group.The experimental results provide an effective reference for the design of fracture parameters in the injection production well group of thin and poor reservoir,which is of great practical significance for improving the development effect of the old reservoir.
作者
曹广胜
陈小璐
王朔
白玉杰
CAO Guang-sheng;CHEN Xiao-lu;WANG Shuo;BAI Yu-jie(Key Laboratory of Education Ministry for Enhancing Oil and Gas Recovery,Northeast Petroleum University,Daqing 163318,China)
出处
《科学技术与工程》
北大核心
2018年第32期20-24,共5页
Science Technology and Engineering
基金
国家科技重大专项(2016ZX05010002)资助
关键词
薄差储层
对应压裂
裂缝穿透比
增产效果
thin and poor reservoir
well group corresponding fracturing
crack penetration ratio stimulation effect
