川西须二气藏体积压裂工艺实践与应用  

Practice and Application of Volume Fracturing Technology in Chuanxi Xu’er Gas Reservoir

作　　者：张梨 牛会娟 黄志鹏 黄霞 ZHANG Li;NIU Huijuan;HUANG Zhipeng;HUANG Xia(Downhole Operations Branch,Sinopec Southwest Petroleum Engineering Co.,Ltd.,Deyang Sichuan 618000)

机构地区：[1]中石化西南石油工程有限公司井下作业分公司,四川德阳610800

出　　处：《中国科技纵横》2024年第15期14-16,共3页China Science & Technology Overview

摘　　要：川西须二气藏属典型的致密气藏,存在破裂压力高、施工压力高、施工排量提高困难、加砂难度大等难题。为此,在施工中采取前置酸降破及后效射孔降破技术、多功能复合支撑剂以及超高压施工等技术措施。现场应用表明,前置酸和后效射孔技术最高降破压可达10MPa,多功能复合支撑剂的单段最高砂浓度达180kg/m^(3),保障了须二储量的规模开发、增储上产。The Xu'er gas reservoir in western Sichuan is a typical tight gas reservoir,which faces challenges such as high rupture pressure,high construction pressure,difficulty in increasing construction displacement,and difficulty in adding sand.For this purpose,technical measures such as pre acid fracturing and post effect perforation fracturing technology,multifunctional composite proppants,and ultra-high pressure construction have been adopted.On site applications have shown that the pre acid and post effect perforation technologies can reduce the maximum burst pressure by up to 10MPa,and the single stage maximum sand concentration of the multifunctional composite proppant can reach 180kg/m^(3),ensuring the large-scale development and production increase of Xu'er reserves.

关 键 词：川西须二气藏 体积压裂 降破压 多功能复合支撑剂 

分 类 号：TE357[石油与天然气工程—油气田开发工程]