FIELD: oil, gas and coke-chemical industries.
SUBSTANCE: invention relates to oil and gas industry and is intended for pressure testing and detection of place of flow of pipe string in well, for example, tubing string lowered into production string. Device for pressure testing of the pipe string in the well includes a shut-off element equipped with a lifting cable and mating surface in the pipe string. Rope in bottom part is equipped with float with central through hole with possibility of relative movement along rope, in which below float fixed stop is installed with possibility of interaction with lower end of float. Float is equipped with instruments and is connected to the shut-off element by means of at least one breaking thread. Length of rope section between shutoff element and float is more than thread length.
EFFECT: technical result is reduction of labour input and duration of pipe string pressure testing with simultaneous detection of non-tight places of pipe string.
1 cl, 6 dwg
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