公开(公告)号：US5398764A

公开(公告)日：1995-03-21

申请号：US89185

申请日：1993-07-12

申请人： Leo G. Collins

发明人： Leo G. Collins

IPC分类号： E21B23/02 ,  E21B34/10 ,  F21B23/02

CPC分类号： E21B34/105 ,  E21B23/02

摘要： A well tool system and a method utilizing said system e.g. pressuring a well conduit to determine whether the conduit has leaks. The system allows a plurality of no go type landing nipples to be used in a conduit without prohibitively restricting the flow therethrough. With the tool of the present system, the landing surface in each nipple is substantially smaller than in prior no go nipples since the landing surface does not support the tool during the well operation. Pressure-actuated, load-bearing keys are expanded into contact with the nipple once the tool is landed which, in turn, bear substantially all of the downward force on the tool during the well operation. The tool can easily be removed by reducing the upstream pressure and lifting the tool upward in the conduit.

摘要翻译： 井工具系统和利用所述系统的方法 压力井管道以确定管道是否有泄漏。 该系统允许在导管中使用多个不脱模式的着陆接头，而不会超过限制其中的流动。 利用本系统的工具，每个接头中的着陆表面基本上小于在先前没有去乳头中的着陆面，因为着陆面在井操作期间不支撑工具。 一旦工具着陆，压力致动的承重键就可以与乳头接触，这又能在井操作期间承受工具上基本上所有的向下的力。 该工具可以通过减小上游压力并将工具向上提升到导管中而被轻易地去除。

公开(公告)号：US5303774A

公开(公告)日：1994-04-19

申请号：US989202

申请日：1992-12-11

申请人： Jay C. Duhn ,  Rex E. Duhn ,  Kenneth D. Webster ,  Aaron B. Speirs

发明人： Jay C. Duhn ,  Rex E. Duhn ,  Kenneth D. Webster ,  Aaron B. Speirs

IPC分类号： E21B17/06 ,  E21B33/12 ,  F21B23/00 ,  F21B23/02

CPC分类号： E21B33/1212 ,  E21B17/06

摘要： A ring seal packer is used for sealing the inside of a specified diameter of API tube. The cylindrical body of the ring seal packer has a pair of circumferential grooves and a pair of rigid seal rings are provided in each such groove. The two rings collectively occupy substantially the entire length of the groove, with no more than a small clearance at the ends for forming a small area orifice through which fluid may flow. Each of the rings has an outside diameter larger than the inside diameter of a specified size of API tube. A longitudinal slot in the ring permits it to collapse to a diameter that fits into the tube as it is pushed into the well. A tang and notch arrangement keeps the rings from rotating relative to each other so that the slots are kept out of alignment. The ring seal packer does not use any elastomeric sealing materials.

摘要翻译： 环形密封封隔器用于密封API管的特定直径的内部。 环形密封封隔器的圆筒体具有一对周向槽，并且在每个这样的槽中设置一对刚性密封环。 两个环基本上占据了槽的整个长度，在端部处不大于小的间隙，以形成流体可以流过的小区域孔。 每个环的外径都大于API管的规定尺寸的内径。 环中的纵向狭槽允许其在被推入井中时折叠成适合管的直径。 脚和凹口布置保持环相对于彼此旋转，使得狭槽保持不对准。 环形密封封隔器不使用任何弹性密封材料。