Plug release indication method

Details Plug release indication method Plug release indication method

E - Fixed Constructions

21

B

E21B 33/16 (2006.01) E21B 33/05 (2006.01) E21B 47/09 (2006.01)

Patent

CA 2252297

A method of indicating the release of a plug, such as a cementing plug for an oil or gas well, includes releasing a plug from a retained position in a tube system, and in response to releasing the plug, opening an electrical circuit to which the plug was connected in the retained position. The method also includes generating, in response to opening the electrical circuit, a plug release indicator signal. The indicator signal can be generated in response to, for example, a low frequency electromagnetic signal.

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