公开(公告)号：US5305988A

公开(公告)日：1994-04-26

申请号：US949939

申请日：1992-09-24

申请人： Don C. Cox

发明人： Don C. Cox

IPC分类号： E21B34/06 ,  E21B34/14 ,  F16K5/18 ,  F16K5/00

CPC分类号： F16K5/185 ,  E21B34/06 ,  E21B34/14

摘要： Two embodiments of a metal valve, each having a body with flow passages and curved internal sealing surfaces and a valve member with a flow passage and external curved sealing surfaces. Both the body and valve member sealing surfaces are curved as a portion of the involute of a circle and are sealingly engageable. The valve member is mounted in the body for rotation between open and closed positions, permitting and preventing flow through valve.

摘要翻译： 金属阀的两个实施例，每个具有带有流动通道和弯曲的内部密封表面的主体以及具有流动通道和外部弯曲的密封表面的阀构件。 主体和阀构件密封表面都是圆形渐开线的一部分弯曲并且可密封地接合。 阀构件安装在主体中以在打开和关闭位置之间旋转，允许和防止通过阀的流动。

公开(公告)号：US4515220A

公开(公告)日：1985-05-07

申请号：US560866

申请日：1983-12-12

申请人： Phillip S. Sizer ,  Don C. Cox ,  Malcolm N. Council

发明人： Phillip S. Sizer ,  Don C. Cox ,  Malcolm N. Council

IPC分类号： E21B23/00 ,  B65H51/14 ,  E21B19/22 ,  E21B33/068

CPC分类号： E21B19/22 ,  B65H51/14 ,  E21B33/068

摘要： Improved coil tubing injection apparatus for servicing wells by running coil tubing thereinto for circulating fluids through the well and having the ability to rotate the coil tubing for performing drilling operations. The apparatus can readily provide concurrent longitudinal and rotational movement of the coil tubing. Methods of servicing wells involving such movement of coil tubing are disclosed.

摘要翻译： 改进的线圈管注入装置，用于通过在其中运行线圈管来维护井，用于使流体循环通过井并且具有旋转用于进行钻井操作的盘管的能力。 该装置可以容易地提供线圈管的同时纵向和旋转运动。 公开了涉及螺旋管的这种运动的井的维修方法。