摘要
针对深水水下井口及采用水下采油树方式生产的井,对比了地面井口与水下井口环空压力监测的通道;给出了各个压力环空的定义;分析了形成环空压力的原因及压力源的来源;阐述了A环空压力的监测及诊断方法,并对每种方法的优缺点进行了对比。通过一口深水井案例,分析了产量变化时各个环空中压力的变化情况,结论表明产量变化时各个环空压力变化明显。研究结果对环空压力管理、诊断、监测及深水井套管选型具有借鉴和指导意义。
The annular pressure monitoring passage between the surface wellhead and subsea wellhead are compared in this paper.By focusing on the deepwater well with subsea well head or subsea production tree,this paper defines the annular layers,analyses the reasons causing annular pressure built-up,identifies three different pressure sources（Sustained continuous pressure,Thermal pressure built-up,and Operated pressure on annular）,demonstrates and compares the pros and cons of each monitoring and diagnostic method on annular A.A case study is also presented to demonstrate the significant annular layers pressure change whenever production rate is altered.The solution in this paper can be served as a good reference and guideline for the annular pressure management,monitoring,diagnostic,and casing selection of deepwater wells.
作者
赵维青
冷雪霜
陈彬
牟小军
ZHAO Weiqing LENG Xueshuang CHEN Bin MU Xiaojun(Ener Tech-Drilling ＆Production Co. , CNOOC, Shenzhen 518607, China Shenzhen Branch ,CNOOC,Shenzhen 518607 ,China)
出处
《石油矿场机械》
2016年第12期5-10,共6页
Oil Field Equipment
基金
中国海洋石油总公司科研项目"深水井环空圈闭压力控制技术及关键工具研究"(CNOOC-KJ 125ZDXM 12LTD 03NFGC 2014-08)
关键词
深水
水下井口
环空压力
监测方法
诊断方法
deepwater
subsea well head
annular pressure build up
monitoring method
diagnostic method
