摘要
为了解决在分层测试、分层采油、分层注水、分层改造和封堵水层的过程中常规的Y341在多级封隔器管柱中无法正常解封的问题,研制了新型的Y342封隔器。该封隔器采用三级胶筒组合密封,能承受高压。右旋上提管柱的解封操作简单可靠,设计了防止提前解封的机构,确保在坐封的过程中不会提前解封,独特的分离中心管设计使得逐级解封更加稳定可靠。通过多次室内试验和现场应用表明,在178 mm 20~#~29~#的套管和150℃的井下环境中能够承受上下环空压力达到51.7 MPa。
In order to solve the problem of unsuccessful unseating of Y341 Packers in regular tubing strings used for zonal testing,zonal oil production,separate-zone injection,fracturing and water plugging,the new Y342 Packer was developed. This packer adopted 3-rubber sealing assembly,could withstand the high pressure from above and below. It could be easily and reliably unseated and released by right-handed rotation while pulling up. It was designed with a mechanism to avoid release in advance. And its unique design of a separated mandrel ensured the stable and reliable unseating stage by stage. Several experiments and field applications showed that the new Y342 packer could withstand annular pressure of 7500 psi in the 7″ 20# ~ 29# casing at temperatures up to 150 ℃.
出处
《钻采工艺》
CAS
北大核心
2016年第5期68-70,104,共3页
Drilling & Production Technology
基金
国家科技重大专项课题"复杂结构井优化设计与控制关键技术"(2011ZX05009-005)
国家自然科学基金委员会-中国石油天然气集团公司石油化工联合基金资助项目"钻柱托压效应的振动释放机理与特征"(项目批准号:U1262108)
国家自然科学基金(项目批准号:51174035
50974023
50874019)
长江大学地热资源开发研究所开放课题(项目编号:GeoTH2014-03)资助
关键词
封隔器
高压
右旋
逐级解封
packer
high pressure
right-handed rotation
unseating stage by stage
