安塞油田S160区长6超低渗透油藏水平井合理加密方式及稳产技术研究  

Technical Research on Reasonable Infilling Method and Stable Production Technology of Horizontal Well in Chang 6 Ultra-low Permeability Reservoir in S160 Area of Ansai Oilfield

作　　者：党鑫 梁雨田 朱陇新 张娜 马明宇 DANG Xin;LIANG Yu-tian;ZHU Long-xin;ZHANG Na;MA Ming-yu(No.1 Oil Production Plant,PetroChina Changqing Oilfield Company,Yan’an Shaanxi 716009,China;Shaanxi Zhongmeng Petroleum Technology Service Co.,Ltd.,Xi’an Shaanxi 710021,China)

机构地区：[1]中国石油长庆油田分公司第一采油厂,陕西延安716009 [2]陕西众盟石油技术服务有限公司,陕西西安710021

出　　处：《辽宁化工》2022年第12期1784-1788,共5页Liaoning Chemical Industry

基　　金：长庆油田分公司科研项目,S160区块超低渗透油藏水平井合理加密方式及稳产技术研究(项目编号:CQY1-JZTP-2020-118)。

摘　　要：S160区长6油藏位于安塞油田王窑区块西南部,含油面积94.43 km^(2),地质储量5666.21万t,1998年起经历勘探评价、大规模建产、稳产生产、滚动上产及加密调整试验4个阶段。受储层非均质性及裂缝发育影响,目前地下油水运移日趋复杂,一次井网采收率低;基础井网在单砂体条件下水驱储量控制程度低,波及体积小;超短水平井加密试验效果明显,但开发技术政策仍需优化。在对该区开展储层地质研究、油藏动态分析基础上对剩余油进行了详细刻画,明确了超低渗透油藏短水平井加密方式,优化了加密后水平井技术政策,为提升稳产期及提高最终采收率提供支撑。Chang6 reservoir in S160 area is located in the southwest of Wangyao block,Ansai Oilfield,and has an oil-bearing area of 94.43 km^(2) and a geological reserve of 56.6621 Mt.It has undergone four stages since 1998,including exploration and evaluation,large-scale production construction,stable production,rolling production and infusing adjustment test.Under the influence of reservoir heterogeneity and fracture development,the underground oil and water migration is increasingly complex,and the recovery rate of primary well pattern is low.The basic well pattern has low control degree and small sweep volume under single sand body condition.The infilling effect of ultra-short horizontal well is obvious,but the development technology policy still needs to be optimized.In this paper,the remaining oil was described in detail on the basis of reservoir geology research and reservoir dynamic analysis in this area,and the infilling method of short horizontal wells in ultra-low permeability reservoir was defined,and the technical policy of horizontal wells after infilling was optimized,which could provide support for improving stable production period and ultimate recovery factor.

关 键 词：超低渗透油藏 水平井 剩余油 加密方式 稳产技术 

分 类 号：TE122.23[石油与天然气工程—油气勘探]