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

FIELD: oil industry.

SUBSTANCE: invention is related in particular to devices for pressure testing of a double-row preventer at a well and/or at a test well of a production service base. The two-row preventer pressure stand 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 stand also includes 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 tubular rams of the lower row is offset relative to the hole formed by the tubular rams of the upper row. The stand is equipped with two sealed support pipes. From below, the support pipes are screwed into the holes of the drum and directed through the axial channel of the preventer, and the holes, formed when the pipe rams of the lower and upper rows are closed, are located opposite the support pipes and have the possibility of their airtight coverage. From above, the support pipes are passed through the holes in the clamp. Couplings are screwed onto the support pipes above the clamp. Depending on the size of the pressed pipe rams, the distances between the central axes of the support pipes in the drum and the clamp are equal. Outside, the drum is equipped with spring centralizers, and a central blind hole is made in the bottom of the drum. The drum with a blind hole is installed in the conical grip of the packer rod. The packer rod is made retrievable and planted in the well below the drum. The pump is hydraulically connected to the annulus of the well. For the installation and dismantling of the stand, a lifting structure with slings is used.

EFFECT: functionality of the stand is expanded, the reliability of the stand 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, 5 dwg