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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 ...
Drill cuttings [1] are broken bits of solid material removed from a borehole drilled by rotary, percussion, or auger methods and brought to the surface in the drilling mud. Boreholes drilled in this way include oil or gas wells, water wells, and holes drilled for geotechnical investigations or mineral exploration. [2]
As of July 2010 it was unknown whether the tubing might have been casing that shot up through the well or perhaps broken drill pipe that dropped into the well. The DNV final report indicated that the second tube was the segment of the drill string that was ejected after being cut by the blow out preventer shears.
Bell nipple: An enlarged pipe at the top of a casing string that serves as a funnel to guide drilling tools into the top of the well. Big bear: A big bear is a hitch (see hitch) that lasts a minimum of 50 straight days. Black Leg : Joints of pipe racked back in the derrick. Blowout: A sudden, uncontrolled release of underground pressure from ...
Once a sufficient amount of pipe has been run into the hole, the weight becomes sufficient to overpower the wellbore pressure and the pipe naturally wants to fall in the hole; this is heavy-pipe. At this point, the snubbing mechanism is changed over to the one which provides upward force to hold the pipe and lower it controllably into the well.
Backing off pipe, is an industry term which means unscrewing the pipe at a desired depth downhole. Inside Back Off or String Shot. Once the free point of a stuck pipe string is determined, the stringshot back-off service can be used to remove the free portion from the well. The string-shot is a metal rod wrapped in explosive primer cord.
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