川东北高压气井环空带压原因分析及防治对策

Cause analysis and countermeasures of annular pressure in high pressure gas wells in northeastern Sichuan

气井环空带压是高温高压高酸性气田的普遍问题，环空异常带压将严重威胁气井的生产安全．甚至会造成重大的井下或地面安全事故。根据目前川东北地区超深高温高压含硫气井的开发现状，分析了正常带压和异常带压的具体原因，在RP90管理流程的基础上提出了针对高压含硫气井环空异常带压的工艺预防措施和管理方案，为后期川东北地区高压含硫气井的安全生产提供了保障。

Gas well＇s annulus pressure is a common problem in high-temperature, high-pressure and high-acid gasfields. Annulus with abnormal pressure will seriously threaten the production safety of gas wells, and even cause a serious underground or ground safety incidents. Based on the current development situation of ultra-deep high temperature and high pressure sulfnr-bearing gas wells in northeastern Sichuan Province, this paper analyzes the specific reasons of annulus normal pressure and abnormal pressure. Based on the RP90 management process, aiming at the annulus abnormal pressure in high pressure sulfur-bearing gas wells, process prevention measures and management program is put forward to provide the later stages production safety of the high-pressure sulfur-bearing gas wells in the northeastern Siehuan region.