20号速装坐封工具设计及应用  

Design and Application of Type 20 Quick Assembly Setting Tool

作　　者：陆应辉 唐凯 李奔驰 任国辉 聂靖雯 聂华富 LU Yinghui;TANG Kai;LI Benchi;REN Guohui;NIE Jingwen;NIE Huafu(Southwest Branch,China National Logging Corporation,Chongqing 400021,China)

机构地区：[1]中国石油集团测井有限公司西南分公司,重庆400021

出　　处：《测井技术》2023年第2期241-246,共6页Well Logging Technology

基　　金：中国石油天然气集团有限公司重大工程技术现场试验项目“水平井桥塞射孔高效联作关键技术现场试验”(2020F-43);中国石油集团测井有限公司科研项目“射孔技术装备研制与配套”(CNLC2022-7A)。

摘　　要：桥塞坐封工具是页岩气、致密气等非常规油气藏中水平井桥塞射孔联作关键工具之一。随着非常规油气水平井分段压裂体积改造技术的发展,桥塞射孔联作一次下井点火级数已由原来的4~6级增加至10~20级。常规20号贝克型坐封工具保养耗时长、装配易出错、连接长度大,引进的一次性坐封工具使用成本高、实际坐封能力不足,难以推广应用。设计了结构紧凑、装配简单、可以重复使用且具备自动平衡井下压力与自动泄除内部压力功能的20号速装坐封工具,并通过坐封力测试、高温高压及桥塞坐封室内试验,验证了该工具的坐封力、耐温耐压等关键技术参数符合设计要求。设计的20号速装坐封工具在川南页岩气、致密气102口水平井推广应用1500余套,为段内多簇压裂工艺提供了技术支撑,推动了非常规油气分段压裂体积改造关键工具的国产化。Plug setting tool is one of the key tools for plug and perforating operation in unconventional oil and gas reservoirs such as shale gas and tight sand gas.With the development of multistage fracturing volume stimulation techniques for unconventional oil and gas horizontal wells,the number of downhole ignition has been increased from 4~6 to 10~20 in plug and perforating operation.The disadvantages such as time consuming maintenance,easy to make mistakes in assembling,large connecting length of typical type 20 Baker setting tool are gradually exposed.High cost and insufficient setting capacity limit the widespread application of the imported disposable setting tool.A tpye 20 quick assembly setting tool with compact structure and easy to assemble has been designed,and that can be reused,automatically balance downhole pressure and release inner pressure.Morever its key technical specifications such as shear force,temperature rating,pressrue rating have been verified by shear force test,high temperature and high pressure test,and plug setting test.More than 1500 sets of the tpye 20 quick assembly setting tool have been applied in 102 shale gas and tight sand gas horizontal wells in southern Sichuan,providing technical support for multi-cluster fracturing,and promoting the localization of key tools for unconventional oil and gas volumetrc fracturing.

关 键 词：射孔技术 桥塞射孔联作 坐封工具 体积压裂 页岩气 致密气 

分 类 号：P631.84[天文地球—地质矿产勘探]