DEVICE FOR PRESSURE TESTING OF DOUBLE-ROW PREVENTER FOR A WELL Russian patent published in 2023 - IPC E21B33/03 G01M3/00 

FIELD: oil industry.

SUBSTANCE: invention is related to devices for pressure testing a double-row preventer in a well. The two-row preventer pressure device for a well includes a preventer body with pipe rams installed in it, forming a hole for the support pipe. The support pipe is passed through the body of the preventer and has the possibility of external sealing with pipe rams of the preventer. The device also contains a packer installed in the well, and a pump for filling the well with liquid and pressurizing the preventer. The preventer is made with double rows, the hole formed by the lower row pipe rams is displaced relative to the hole formed by the upper row pipe rams, which ensures successive pressure testing of the pipe rams. The device is equipped with two sealed support tubes, and the holes formed when the pipe slips of the lower and upper rows are closed are located opposite the support pipes with the possibility of their airtight coverage. From below, the support pipes are plugged and passed through the axial channel of the preventer. Couplings are screwed onto the upper end of the support pipes, allowing the support pipes to be suspended sequentially on the elevator. The packer is made retrievable with a hydraulic seat, the pump is hydraulically connected to the annulus of the well. For installation and dismantling of the device, a lifting structure with slings is used.

EFFECT: functionality of the device is expanded, the reliability of the device in operation is increased, the labor intensity of work on pressure testing of a preventer with two rows of rams is reduced, and the quality of pressure testing of pipe rams of a preventer is also improved.

1 cl, 3 dwg