摘要
国内油气田天然气井随着天然气开采出现大量环空带压现象,造成严重安全隐患,据资料统计环空带压现象90%左右由螺纹泄漏引起[1]。特殊扣油套管受到螺纹类型、加工误差、材质选择、运输磕碰、不规范操作、密封脂的选择等方面的影响,都可能导致螺纹出现气体泄漏[2]。在金坛盐穴储气库已投产注采井运行过程中,已经有4口井出现环空带压,给储气库的安全运行带来一定的安全隐患。利用气密封检测技术对金坛储气库注采完井管柱螺纹进行密封检测,有效剔除泄漏管柱入井,避免因螺纹泄漏引发环空带压。目前该技术在金坛储气库4口井注采完井作业中成功应用,为储气库的长期注采运行提供了安全保障。
With the occurrence of large number of annulus pressure phenomena in natural gas wells in domestic oil and gas fields,serious security risks are caused.According to the data,the leakage of the annulus is about 90%,which is caused by thread leakage.Special oil casing thread type,processing error,material selection,transportation knock against,non-standard operation,the influence of the choice of sealing grease,could lead to a thread a gas leak.During the operation of injection wells in Jintan salt underground gas storage,there are 4 wells showing annulus pressure,which brings certain security risks to the safe operation of gas storage.Sealing detection of the pipe column thread of injection and pro-duction completion of Jintan gas storage by gas seal detection technology,effectively elimi-nate leakage of pipe column into well and avoid ring pressure caused by leakage of thread.At present,the technology has been successfully applied to the injection and recovery opera-tion of 4 wells in Jintan gas storage,which provides security for the longterm injection and production operation of the gas storage.
作者
李海伟
李梦雪
孟凡琦
任众鑫
王元刚
LI Haiwei;LI Mengxue;MENG Fanqi;REN Zhongxin;WANG Yuangang(Gas Storage Department,PetroChina Pipeline Company Ltd-west-east Gas Pipeline Branch Company,Zhenjiang Jiangsu 212004,China;Hangzhou Department,PetroChina Pipeline Company Ltd-west-east Gas Pipeline Branch Company,Hangzhou Zhejiang 310000,China)
出处
《石油化工应用》
CAS
2018年第3期35-38,共4页
Petrochemical Industry Application
基金
中国石油天然气股份有限公司重大科技专项"地下储气库关键技术研究与应用"子课题"盐穴储气库加快建产工程试验研究"
项目编号:2015E-400801
关键词
储气库
完井
气密封检测
螺纹
泄漏
gas storage
completion
gas seal detection
thread
leakage
