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The term free point is used to describe the delineating point between the stuck pipe and the free pipe in a pipe string. Every joint of pipe above the free point is free, meaning it can rotate freely and be moved in and out of the hole, provided it was not attached to the remaining joints of stuck pipe below the free point.
Hydraulic Chain Pipe Wrench – A hydraulic driven wrench which will safely remove threaded pipe from other threaded coupling, valve, etc. while the other devices listed here are for loosening (breaking) nuts. Torque values available vary with size but range up to approximately 75,000 FT-LB. [5]
A chase nipple is a short pipe fitting, which creates a path for wires between two electrical boxes. A chase nipple has male threads on one end only. The other end is a hexagon. The chase nipple passes through the knockouts of two boxes, and is secured by an internally threaded ring called a lock nut. [1] [2]
The tremie pipe is usually made up of short pipe sections of about 250 mm inside diameter joined by screw thread with O-ring seal, or by gasketed flanges, so that the length can be adjusted during the pour without getting the top of the pipe below the water or removing the bottom end from below the surface of the poured concrete.
[18]: 71 The rubber sleeves are typically secured with stainless steel worm drive clamping bands, which compress the rubber to make a tight seal around the pipes and fittings. These pipe clamps are similar to hose clamps, but are heavier-duty and ideally are made completely of stainless steel (including the screw) to provide maximum service life.
Tripping pipe (or "Making a round trip" or simply "Making a trip") is the physical act of pulling the drill string out of the wellbore and then running it back in. This is done by physically breaking out or disconnecting (when pulling out of the hole) every other 2 or 3 joints of drill pipe at a time (called a stand ) and racking them ...
JIC hydraulic fitting from 1967 Ford backhoe. It was badly stuck, but shows what a JIC fitting looks like. The left is the male part, the right is female. A JIC bulkhead adapter, which converts National Pipe Thread (NPT) on the left to JIC on the right. The angled seating surface is clearly visible on the far right.
A compression fitting 15 mm isolating valve. A compression fitting is a fitting used in plumbing and electrical conduit systems to join two tubes or thin-walled pipes together. . In instances where two pipes made of dissimilar materials are to be joined (most commonly PVC and copper), the fittings will be made of one or more compatible materials appropriate for the connect