工程设计学报2017，Vol.24Issue(5)：555-562,8.DOI:10.3785/j.issn.1006-754X.2017.05.010
压裂球座冲蚀磨损规律研究和结构优化
Study on erosion law and structure optimization of fracturing ball seat
摘要
Abstract
The sliding sleeve can't be opened and the fracturing operation can't work well for the serious erosion of cone surface of the ball seat for fracturing. The model of ball seat for fracturing was established and the causes of erosion were analyzed based on the theory of solid-liquid two-phase flow and erosion. The influences of erosion for ball seat were studied in displacement, particle concentration, particle size and viscosity of fracturing fluid by the method of controlling variables. Through the analysis, the erosion rate of the ball seat was increased with the increase of displacement and particle concentration of fracturing fluid. The erosion rate of the ball seat was decreased with the increase of particle diameter and viscosity of fracturing fluid. In order to reduce ball seat erosion, the erosion of different cone angle and the structure of the ball seat were analyzed, which indicated that the angle of 20°~30° was the most reasonable for cone surface of ball seat, and the erosion of ball seat was low with the cone surface of concave structure and double angle structure. It is expected that the results can be used to improve horizontal well ball staged fracturing technique and guide the fracturing operation.关键词
水平井/分段压裂技术/冲蚀磨损/球座Key words
horizontal well/staged fracturing technology/erosion/ball seat分类
能源科技引用本文复制引用
向正新,李思行,钱利勤,夏成宇,涂忆柳..压裂球座冲蚀磨损规律研究和结构优化[J].工程设计学报,2017,24(5):555-562,8.基金项目
国家自然科学基金资助项目(51405032) （51405032）
石油天然气装备教育部重点实验室资助项目(OGE201403-06) （OGE201403-06）
长江大学青年人才基金资助项目(2015cqr15) （2015cqr15）
