摘要
支撑剂在裂缝中的运移及铺置规律决定了裂缝的有效长度及导流能力,进而影响了压裂水平井的初始产量和最终采收率.支撑剂的运移规律十分复杂,目前主要从室内实验及数值模拟两方面进行研究.通过对支撑剂的运移规律进行系统梳理,总结了目前室内实验及理论研究存在的3方面问题:忽略了裂缝壁面的滤失性;用平滑玻璃板代替裂缝,没有考虑裂缝壁面粗糙度的影响;在已形成的裂缝中研究支撑剂运移,没有考虑裂缝扩展对支撑剂运移的影响.在明确现有问题的前提下,对支撑剂运移规律的发展方向进行了展望.
The migration and placement of proppant in the fracture determines the effective fracture length and conductivity,which in turn affects the initial production and final recovery of fractured horizontal wells.The migration law of proppant is very complex,which is mainly studied from laboratory experiment and numerical simulation.In this paper,the migration law of proppant was systematically analyzed.The following three problems in laboratory experiments and theoretical studies were summarized:The filtration of fracture wall surface was ignored;The fracture was replaced by smooth glass plate without considering the influence of crack wall roughness;Proppant migration was studied without considering the effect of fracture propagation.The research trend of proppant migration in the future is discussed.
作者
张珈铭
任宗孝
邱茂鑫
焦姣
张华珍
侯亮
ZHANG Jiaming;REN Zongxiao;QIU Maoxin;JIAO Jiao;ZHANG Huazhen;HOU Liang(CNPC Economics&Technology Research Institute,BeiJing 100724,China;College of Petroleum Engineering in Xi’an Shiyou University,Xi’an,Shaanxi 710065,China)
出处
《世界石油工业》
2020年第1期58-62,共5页
World Petroleum Industry
关键词
压裂水平井
支撑剂
运移规律
室内实验
CFD-DEM模型
fracturing horizontal wells
proppant
migration regularity
laboratory experiments
CFD-DEM model
作者简介
第一作者:张珈铭(1986-),男,博士,工程师,毕业于中国石油大学(北京),主要从事非常规资源开发技术及成本分析、油气田开发与高新技术跟踪、科技管理及制度建设、科技发展战略及科技发展规划等方面研究。
