发明名称 WELL CAP METHOD AND APPARATUS
摘要 A gas well cap seal assembly adapted to seal the casing bowl of a gas well and to pressurize the annulus region between the inner surface of the well bore and the outer surface of the well casing which is filled with wet cement. The pressurized annulus aids in the prevention of forming gas bubbles and gas leakage paths in the annulus region.
申请公布号 CA2549484(C) 申请公布日期 2013.05.21
申请号 CA20062549484 申请日期 2006.06.06
申请人 LARSEN, LANCE 发明人 LARSEN, LANCE
分类号 E21B33/04 主分类号 E21B33/04
代理机构 代理人
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