公开(公告)号：US4215747A

公开(公告)日：1980-08-05

申请号：US912378

申请日：1978-06-05

申请人： Fern H. Cox ,  William M. Taylor ,  Friedrich E. Just

发明人： Fern H. Cox ,  William M. Taylor ,  Friedrich E. Just

IPC分类号： E21B33/047 ,  E21B33/06

CPC分类号： E21B33/047 ,  E21B33/062 ,  E21B33/063

摘要： A blowout preventer with an aligning apparatus having a housing with a vertical bore therethrough and a blowout preventer in one portion of the housing with guideways extending outward from the bore, aligning guideways in the housing spaced from and parallel to the blowout preventer guideways, an aligning ram in each of the aligning guideways with a piston for extending and retracting the aligning ram, each aligning ram having a carrier slidable in the aligning guideway with a cam surface and a jaw having a mating cam surface and mounted on the carrier with the respective cam surfaces being in engagement, the outer surface of the jaw being substantially perpendicular to the axis of the aligning guideways and adapted to engage tubing within the housing bore, the cam surfaces of opposing aligning rams being angled to cause the opposing jaws to move transversely in the aligning guideways when they come into engagement with tubing to cause the tubing to be moved with the jaws into the preferred position for closing the blowout preventer on the tubing.

摘要翻译： 具有对准装置的防喷器具有穿过其中的垂直孔的壳体和在壳体的一部分中的防喷器，其具有从孔向外延伸的导轨，将壳体中的导轨与防喷器导轨间隔开并平行;对准 每个对准导轨中的活塞具有用于延伸和缩回对准柱塞的活塞，每个对准柱塞具有可在对准导轨中滑动的托架，其具有凸轮表面和具有配合凸轮表面的夹爪，并且具有相应凸轮 表面接合，钳口的外表面基本上垂直于对准导轨的轴线并且适于接合壳体孔内的管道，相对的对准柱塞的凸轮表面成一定角度以使相对的夹爪横向移动 对准导轨，当它们与管道接合以使管道被移动到夹头进入pref 错误的位置用于关闭管道上的防喷器。

公开(公告)号：US4341264A

公开(公告)日：1982-07-27

申请号：US197115

申请日：1980-10-15

申请人： Fern H. Cox ,  Irwin Rosenhauch

发明人： Fern H. Cox ,  Irwin Rosenhauch

IPC分类号： B23D21/00 ,  B23D33/00 ,  E21B29/08 ,  E21B33/06

CPC分类号： E21B33/063 ,  B23D21/00 ,  B23D33/00 ,  E21B29/08 ,  Y10T83/9447

摘要： A wellhead shearing apparatus suitable for use on oil and gas wells having hydrogen sulfide. The apparatus includes a body with a vertical bore and opposed guideways extending from the bore. A ram assembly with two rams, means for moving each ram in the guideways together with the bore for shearing pipe in the bore and apart for other well operations. One ram has an upper cutting blade and the other ram has a lower cutting blade, which has a hard metal insert providing its cutting edge and the upper cutting blade has a hard cutting edge. The rams are of steel having a maximum hardness of 24 to 26 Rockwell C and the insert has substantially greater hardness. The hard cutting edges of both blades are isolated from the sour gas when the blades are under stress as a result of sealing across the vertical bore.

摘要翻译： 适用于具有硫化氢的油气井的井口剪切装置。 该装置包括具有垂直孔的主体和从孔延伸的相对的导轨。 具有两个柱塞的柱塞组件，用于将导轨中的每个冲头与用于将孔中的管切割的孔一起移动，用于其他井操作。 一个压头具有上切割刀片，另一个压头具有下切割刀片，其具有提供其切削刃的硬金属刀片，并且上刀片具有硬切削刃。 柱塞是最大硬度为24至26洛氏硬度的钢，并且刀片具有显着更大的硬度。 当叶片处于应力作用下，两个叶片的硬切割边缘与酸性气体隔离，因为穿过垂直孔的密封。