DEVICE FOR HYDRAULIC TESTING THE PREVENTER IN WELL Russian patent published in 2019 - IPC E21B33/03 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil industry and is intended for hydraulic testing the preventer in the well. Device for hydraulic testing the preventer in the well includes a support pipe passing through a preventer housing and made with a conical external thread, where a coupling is wrapped. Device also includes two rubber cups with a washer between them and with the support and clamping plates, a plug with an internal thread, a rod installed in the support pipe, designed to compress the rubber cups. There is a cylindrical sampling on the upper end of a clamping plate. New is that the rod is made of a pipe having an external conical thread at the upper end, and an external cylindrical thread at the lower end. In this case, a two-stage bushing with an internal conical thread at the lower end is wrapped around the conical thread of the rod. Lower part of this sleeve with a small diameter is located with the possibility of rotation in the cylindrical sampling, made on the upper part of the coupling, wrapped in the support pipe. Support plate is located on top of the rubber cups and is press-fitted on the support pipe. Clamping plate is located below the rubber cups and is made with an internal thread, where the lower threaded part of the rod is wrapped. Upper end of the clamping plate is made flat. Support tube is made with the possibility of entry of the lower end in the cylindrical sampling of the clamping plate with increasing rubber cups in diameter. Plug is wrapped in a cylindrical thread of the rod. Through holes are made on the washer, support and clamping plates. Pins made with sharp conical protrusions at one end are press-fitted into the holes of support and clamping plates. Pin, made with a sharp conical protrusion at both ends, is press-fitted into the hole of the washer. At the same time, sharp conical protrusions of the pins are included in a layer of rubber cups.

EFFECT: proposed device simplifies the design.

1 cl, 4 dwg