Casing coupling:
A short, threaded tubular coupling used for making connections between pipe joints and other tools.
A short threaded nipple screwed into the open end of the coupling and over the threaded end of casing to protect the threads from dirt ...
A special coupling device inserted one or two joints above the bottom of the casing string that contains a check valve to permit fluid to ...
A logging device used to determine accurately the depth of a well; the log measures and records the depth of each casing collar, or coupling, ...
A pipe coupling threaded on the inside.
A means of cementing casing in a well so that the casing may, if necessary, be retrieved with minimum difficulty. A special mud, usually an ...
1. A short, heavy, cylindrical section of steel filled with concrete and rounded at the bottom, which is placed at the end of the casing ...
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