致密油藏水平井压裂裂缝参数优化方法  

Optimal method of fracture parameters for horizontal well fracturing in tight oil reservoir

作　　者：姜汉桥 赵玉云 陈强 李俊键 成宝洋 范桢 JIANG Hanqiao;ZHAO Yuyun;CHEN Qiang;LI Junjian;CHENG Baoyang;FAN Zhen(State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum,Beijing 102249,China;Department of Mathematical Science,School of Science,Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;Aktobe Project Department,CNPC Western Drilling International Engineering Corporation,Urumqi,Xingjiagn 830026,China)

机构地区：[1]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [2]浙江理工大学理学院数学系,浙江杭州310018 [3]中石油西部钻探国际工程公司阿克纠宾项目部,新疆乌鲁木齐830026

出　　处：《中国海上油气》2020年第3期77-85,共9页China Offshore Oil and Gas

基　　金：国家重点基础研究发展计划(973计划)“陆相致密油高效开发基础研究(编号:2015CB250900)”部分研究成果。

摘　　要：致密油藏基质渗透率极低,往往采用水力压裂的方式进行开发。压裂缝网决定了油井的产能,因此缝网参数的优化是致密油高效开发中的关键问题。本文在致密油藏非线性渗流数值模拟方法的基础上,研究了水平井单井压裂裂缝的数量、位置分布、长度、开度、方位角等参数对致密油藏衰竭式开采产量的影响规律,并进行了优化设计,形成了基于模拟退火算法的参数优化方法。基于优化结果,本文提出了一种哑铃交错型水平井压裂技术,为现场压裂方案的优选提供了借鉴。Due to the extremely low matrix permeability of tight oil reservoir,the development of hydraulic fracturing is often used.The fracture network determines the productivity of an oil well,so the optimization of fracture network parameters is essential to the efficient development of tight oil reservoir.In this paper,based on the numerical simulation of nonlinear seepage in tight reservoirs,the effects of the hydraulic fractures number,position distribution,length,aperture,azimuth and other parameters of single horizontal well on the productivity of depleted production in tight reservoirs are studied and the design parameters are optimized,thereby a simulated annealing algorithm-based parameter optimization method is formed.Based on the optimization results,this paper proposes a dumbbell-staggered horizontal well fracturing technology,which is of referential significance to the optimization of field fracturing schemes.

关 键 词：致密油藏 水平井压裂 裂缝参数优化 交错压裂 模拟退火算法 

分 类 号：TE357[石油与天然气工程—油气田开发工程]