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    • 7. 发明申请
    • Method and means to seal the casing-by-casing annulus at the surface for reverse circulation cement jobs
    • 在表面密封套管套管环路用于反循环水泥作业的方法和方法
    • US20070137870A1
    • 2007-06-21
    • US11314044
    • 2005-12-20
    • James GriffithCaleb Carroll
    • James GriffithCaleb Carroll
    • E21B19/00
    • E21B33/05E21B33/14
    • A method for sealing an annulus defined between an outer casing and an inner casing, the method having steps as follows: fastening a lock ring to an anchor base, wherein the lock ring comprises a threaded fastener of the lock ring to the head; positioning the lock ring and anchor base about the outer casing; fastening a limit clamp to an exterior surface of the outer casing; repositioning the lock ring and anchor base so that the anchor base is in contact with the limit clamp; fastening a head to the lock ring; providing an opening for fluid communication with the annulus through the head; positioning a plug about the inner casing and in contact with the inner casing and the head; positioning a seal fitting clamp about the inner casing and in contact with the plug; positioning a bull cap about the inner casing and in contact with the seal fitting clamp; and fastening the bull cap to the head.
    • 一种用于密封限定在外壳和内壳之间的环的方法,所述方法具有以下步骤:将锁环固定到锚固基座,其中所述锁环包括所述锁环的螺纹紧固件到所述头部; 将锁环和锚固基座围绕外壳定位; 将限位夹固定到所述外壳的外表面; 重新定位锁定环和锚固基座,使得锚固基座与限位夹具接触; 将头部固定在锁环上; 提供用于通过头部与环带流体连通的开口; 将塞子定位在内壳体周围并与内壳体和头部接触; 将密封配件夹具围绕内壳定位并与插头接触; 将公牛帽围绕内壳定位并与密封配件夹具接触; 并将公牛帽固定在头上。