摘要
低渗油藏储层物性差,多通过压裂改造实现有效开采,但投资风险大,开发方案的设计应考虑油价的波动。DS区块目的层为低渗储层,基于油藏工程方法和数值模拟方法进行了开发层系、开发方式和井网井距的设计,并预测了开发指标,评价了不同国际油价下开发方案的净现值。结果表明,研究区的开采应分两套层系开发,采用直井五点法井网进行早期注水开采,裂缝导流能力为225 mD·cm,裂缝半长设计为60 m;储层压裂后采出程度比不压裂时高约4%,当油价低于60美元时,不压裂时获得的经济效益更高;当油价高于60美元后,压裂改造可以获得更好的经济效益。本文研究结果能够为DS区块的开发提供参考。
Low permeability reservoir is poor in physical property,and most of the reservoirs could be effectively exploited by fracturing,but the investment risk is high.Development plans should be designed by considering oil price fluctuations.DS block is a low permeability reservoir.Based on reservoir engineering method and numerical simulation method,the development layer,development method and well patterns were designed,the development indexes were predicted,and the net present values under different oil prices were evaluated.The results show that the development of DS block could be divided into two sets of strata,and the five-point vertical well pattern should be used with early waterflooding.The fracture conductivity is 225 mD·cm,and the fracture half-length is 60 m.The oil recovery degree after fracturing is about 4%higher than that without fracturing.When the oil price is below$60,the economic benefits of no-fracturing scheme are higher.When the oil price is above$60,fracturing can be more economical.The research results can provide reference for the development of DS block.
作者
张玉欣
夏志增
于晨晓
段文慧
王查荀
ZHANG Yuxin;XIA Zhizeng;YU Chenxiao;DUAN Wenhui;WANG Chaxun(Shandong Institute of Petroleum and Chemical Technology,Dongying Shandong 257061,China)
出处
《石油化工应用》
CAS
2023年第8期33-37,共5页
Petrochemical Industry Application
基金
山东石油化工学院大学生创新创业训练计划项目,项目编号:2022086。
关键词
低渗油藏
数值模拟
方案设计
经济评价
low permeability reservoir
numerical simulation
scheme design
economic evaluation
