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Key Seated Stuck Pipe. Key seating occurs when the drill string becomes off-centered in the wellbore, and the pipe collars become caught on a deviation in the wellbore. If the rig is able to move the drill string freely downhole, but every time the drill string is pulled upward it becomes stuck at the same point, then it is likely that the pipe ...
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 ...
Assembled tremie placing concrete underwater Hopper, pipes and lifting cap components of a tremie concrete placement tube. A tremie is a watertight pipe, usually of about 250 mm inside diameter (150 to 300 mm), [1] with a conical hopper at its upper end above the water level. It may have a loose plug or a valve at the bottom end.
Drill pipe makes up the majority of the drill string back up to the surface. Each drill pipe comprises a long tubular section with a specified outside diameter (e.g. 3 1/2 inch, 4 inch, 5 inch, 5 1/2 inch, 5 7/8 inch, 6 5/8 inch). At each end of the drill pipe, tubular larger-diameter portions called the tool joints are located.
Problems can occur if a thick filter cake is formed: tight hole conditions, poor log quality, stuck pipe, lost circulation and formation damage. In highly permeable formations with large pore throats, whole mud may invade the formation, depending on mud solids size: Use bridging agents to block large openings so mud solids can form a seal.
A broken pipe was taken out on July 11 and replaced with a flange spool resembling a pipe, on top of which the new cap was located. [ 26 ] [ 27 ] The well integrity test was scheduled to take place after the installation of a three-ram capping stack over the lower marine riser package of the Deepwater Horizon semi-submersible rig on July 13 .
Plastic rings will (hopefully) soon be eliminated. This hack might soon be an unnecessary relic of the past. Fortunately, many brands are making efforts to reduce or eliminate single-use items ...
An o-ring boss seal is a technique for joining two fluid-carrying pipes, hoses, or tubing. In an o-ring boss (abbreviated ORB) system, a male-threaded part is inserted into a female-threaded part, providing a mechanical seal. This system differs from others in that a nut is tightened over an o-ring in a chamfered area, creating a fluid-tight ...