二氧化碳前置蓄能体积压裂优化设计  

Optimization Design of Volume Fracturing With Carbon Dioxide Pre-storage

作　　者：王鹏涛[1] 吴向阳[1] 朱杰[1] 甄浩 WANG Peng-tao;WU Xiang-yang;ZHU Jie;ZHEN Hao(Xingzichuan Oil Production Plant of Yanchang Oilfeld Co.,Ltd,Yan'an 717400,China)

机构地区：[1]延长油田股份有限公司杏子川采油厂,延安717400

出　　处：《当代化工》2021年第2期447-450,共4页Contemporary Chemical Industry

基　　金：“十三五”国家科技重大专项,大型油气田及煤层气开发(项目编号:2017ZX05013)。

摘　　要：为分析二氧化碳蓄能压裂过程各项参数对压裂效果的影响,以鄂尔多斯盆地某低渗油藏为背景,建立了油藏地质模型,并进行数值模拟产量和压力历史拟合,在准确建立地质模型基础上,分析了不同压裂过程注入排量、裂缝半长及间距、裂缝导流能力对压裂效果的影响,通过压裂过程参数模拟优化,建议注入量为140 t、注入速度控制在35-40 t·d^(-1)之间、压裂后尽快开井求产,在经济性的前提下获得最优的压裂效果。In order to analyze the influence of various parameters of carbon dioxide energy storage fracturing process on the fracturing effect, taking a low-permeability reservoir in Ordos basin as the background, the reservoir geological model was established, and the numerical simulation of production and pressure history matching was carried out. Based on the accurate geological model, the effect of injection displacement, fracture half-length and spacing, fracture conductivity on the fracturing effect was analyzed. Through the simulation and optimization of fracturing process parameters, it was suggested that the injection volume is 140 t, the injection speed is controlled between 35-40 t·d^(-1), and the well is opened for production as soon as possible after fracturing, so as to obtain the optimal fracturing effect.

关 键 词：二氧化碳蓄能压裂 混相驱油 油藏数值模拟 压裂参数优化 

分 类 号：TE357[石油与天然气工程—油气田开发工程]