发明名称 DUAL STRING ASSEMBLY FOR GAS WELLS
摘要 A dual completion for gas wells includes a dual base with a primary hanger incorporated in the base. Primary and secondary coiled tubing strings extend through the base at a downwardly converging angle of 2.degree. or less. The dual base is mounted on an annular blowout preventer. At the top of the annular blowout preventer is a tubing centralizer that aligns the two tubing strings parallel to one another. The blowout preventer has two side ports below the bladder allowing the operator to produce gas from the annulus, to flare gas to atmosphere or to pump in kill fluid in the event of an emergency. The alignment of the tubing strings allows production recorders to be run in either string.
申请公布号 CA2172097(C) 申请公布日期 1999.08.31
申请号 CA19962172097 申请日期 1996.03.19
申请人 发明人 MITCHELL, BLAIR ORVEL;MITCHELL, MORTON LINDSAY;MITCHELL, BRYSON JAMES
分类号 E21B33/047;E21B33/06;(IPC1-7):E21B33/06 主分类号 E21B33/047
代理机构 代理人
主权项
地址