套损井小直径压裂封隔器研制及应用  

Development and Application of Small Diameter Fracturing Packer in Casing Damaged Wells

作　　者：张锟[1,2] ZHANG Kun(Production Engineering Research Institute, Daqing Oilfield Company Ltd., Daqing 163453,China;Heilongjiang Provincial Key Laboratory of Oil and Gas Reservoir Stimulation,Daqing 163453,China)

机构地区：[1]大庆油田有限责任公司采油工程研究院,黑龙江大庆163453 [2]黑龙江省油气藏增产增注重点试验室,黑龙江大庆163453

出　　处：《石油矿场机械》2022年第1期105-111,共7页Oil Field Equipment

基　　金：中石油大庆油田有限责任公司“特高含水后期水驱高效精准挖潜技术研究与规模应用”(2016E-0205)。

摘　　要：大庆油田老区套管损坏的油水井数量逐年增加。对于修复的井筒,受限于套管缩径,现有的压裂工具无法下入和起出,严重影响到主力产区的挖潜上产和注采井网完整性。采用结构优化设计与室内试验相结合的方式,研制出高性能的小直径扩张式压裂封隔器。室内试验与现场应用表明,该封隔器能通过最小内径102 mm的套管,满足承压70 MPa、耐温120℃的修复套损井的多层压裂改造要求。该封隔器及其配套工具的成功应用,改善了大庆油田套损井长期处于低产或停产状态的局面,为老区的持续稳产提供技术支持。The damaged oil and water wells in the old area of Daqing Oilfield have been increasing year by year.For the repaired wellbore,limited by the casing shrinkage,the existing fracturing tools cannot be run in and out,which seriously affects the potential tapping and production and the integrity of the injection-production well pattern in the main producing areas.A high-performance small-diameter expansion fracturing packer was developed by combining structural optimization design with indoor tests.Indoor tests and field applications show that the packer can pass through casings with a minimum inner diameter of 102 mm,and meets the multi-layer fracture reconstruction requirements for repairing the casing damaged wells with a pressure of 70 MPa and temperature of 120℃.The application of the packer and its supporting tools improved the situation that the casing damaged wells are in low production or shut down for a long time,which provides technical support for stable production of the old areas.

关 键 词：套损井 小直径 压裂封隔器 结构优化 

分 类 号：TE931.203[石油与天然气工程—石油机械设备]