摘要
目前中国低渗透油藏加密井及更新井产量在油藏总产量中占有重大比例,但同一井区内加密井生产效果差别巨大,亟需开展加密井单井评价及加密技术界限研究,指导低渗透油藏井网加密调整。分析盘古梁长6油藏历年投产加密井的实际生产动态数据,给出加密井生产动态模式划分标准以评价加密井单井开发效果。利用数值模拟方法定量研究了加密井网和加密时机对低渗透油藏加密效果的影响。结果表明:加密井网井排距对加密效果影响最大,其次是加密井类型,最后是加密时机。利用油藏工程方法给出了低渗透油藏加密极限井距和加密时机的计算方法,对低渗透油藏井网加密调整具有指导意义。
The production of infill wells and renewal wells account for a significant proportion of the total oil reservoir production in low-permeability reservoirs in China at present.However,the production profiles of infill wells varies greatly in the same block.It is urgent to carry out the research on evaluation of infill wells and infilling technology standard to guide the adjustment of infill well patterns in low-permeability reservoirs.Basing on the analyze of actual production performance data of the infill wells in Panguliang Chang 6 reservoir,the method of classifying production performance mode of the infill wells was proposed.Numerical simulation method was used to quantitatively study the influence of infilling well pattern and infilling timing on the infill wells production in low-permeability reservoirs.The results show that the well spacing of infilling well pattern has the greatest impact on enhanced oil recovery of infill well production,followed by infill well types and infilling timing.Finally,the infilling timing.The calculation methods of infilling limit well spacing and infilling timing of low-permeability reservoirs are given by using reservoir engineering method,Which have guiding significance for the adjustment of well pattern in low permeability reservoirs.
作者
高占武
杨林锦
杨学峰
雷启鸿
王凯
罗汉昌
GAO Zhan-wu;YANG Lin-jin;YANG Xue-feng;LEI Qi-hong;WANG Kai;LUO Han-chang(No.3 Oil Production Plant of PetroChina Changqing Oilfield Branch,Yinchuan 750006,China;College of Petroleum Engineering,China University of Petroleum,Beijing 102249,China)
出处
《科学技术与工程》
北大核心
2021年第20期8321-8328,共8页
Science Technology and Engineering
基金
国家自然科学基金(51674273,ZR20180009)
国家科技重大专项(2017ZX05069003-02)。
关键词
低渗透油藏
加密井评价
加密技术界限
加密时机
low permeability reservoirs
evaluation of infill wells
infilling technology standard
infilling timing
