Integrated hydraulic fracturing techniques to enhance oil recovery from tight rocks

作     者：ZHOU Fujian SU Hang LIANG Xingyuan MENG Leifeng YUAN Lishan LI Xiuhui LIANG Tianbo ZHOU Fujian;SU Hang;LIANG Xingyuan;MENG Leifeng;YUAN Lishan;LI Xiuhui;LIANG Tianbo

作者机构：State Key Laboratory of Petroleum Resources and ProspectingChina University of PetroleumBeijing 102249China MOE Key Laboratory of Petroleum EngineeringChina University of PetroleumBeijing 102249China CNPC Xibu Drilling Engineering CompanyKaramay 834000China 

出 版 物：《Petroleum Exploration and Development》 (石油勘探与开发（英文版）)

年 卷 期：2019年第46卷第5期

页      面：1065-1072页

核心收录：

学科分类：0808[工学-电气工程] 0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0820[工学-石油与天然气工程] 0818[工学-地质资源与地质工程] 0807[工学-动力工程及工程热物理] 0708[理学-地球物理学] 0815[工学-水利工程] 0816[工学-测绘科学与技术] 0813[工学-建筑学] 082002[工学-油气田开发工程] 0814[工学-土木工程] 

基　　金：Supported by the China National Science and Technology Major Project(2016ZX05051-03,2016ZX05030-05) PetroChina Innovation Foundation(2018D-5007-0205) the Science Foundation of China University of Petroleum at Beijing(2462017YJRC031). 

主　　题：tight oil hydraulic fracturing imbibition recovery temporary plugging agent micro-sized proppant nanofluid surfactant enhanced oil recovery 

摘      要：Two main challenges exist in enhancing oil recovery rate from tight oil reservoirs,namely how to create an effective complicated fracture network and how to enhance the imbibition effect of fracturing fluid.In response to the challenges,through modeling experiment in laboratory and evaluation of field application results,a set of integrated efficient fracturing and enhanced oil recovery(EOR)techniques suitable for tight oil development in China has been proposed.(1)Fracturing with temporary plugging agents to realize stimulation in multiple clusters,to form dense fracture network,and thus maximizing the drainage area;(2)Supporting induced fractures with micro-sized proppants during the prepad fluid fracture-making stage,to generate dense fracture network with high conductivity;(3)Using the liquid nanofluid as a fracturing fluid additive to increase oil-water displacement ratio and take advantage of the massive injected fracturing fluid and maximize the oil production after hydraulic fracturing.