BENCH FOR PRESSURE TESTING OF DOUBLE-ROW PREVENTER AT WELL Russian patent published in 2023 - IPC E21B33/03 

FIELD: oil industry.

SUBSTANCE: devices for pressure testing of a double-row preventer at a well and/or at a test well of a production service base. A bench for pressure testing a double-row preventer at a well includes a preventer body with pipe rams of the lower row and the upper row installed in it, forming a hole for support pipes passed through the body of the preventer with the possibility of external sealing with pipe rams of the preventer, a retrievable packer plug installed in the well, and pump for filling the well with liquid and pressure testing the preventer. In this case, the hole formed by the pipe rams of the lower row is coaxial to the axis of the axial channel of the double-row preventer, and the hole formed by the pipe rams of the upper row is offset relative to the axis of the axial channel of the double-row preventer. With the ability to ensure sequential pressure testing of pipe rams, the bench is equipped with two sealed support pipes, sequentially passed through the axial channel of the preventer. The holes formed when clamping the pipe rams of the lower and upper rows are located opposite the support pipes with the possibility of sealing them. Moreover, the support pipe, designed for sequentially checking the tightness of the lower row of pipe rams, is equipped with a centralizer at the bottom, and the support pipe, designed for sequential checking the tightness of the upper row of pipe rams of a double-row preventer, is equipped with a cylinder, a remote pipe and an upper centralizer at the bottom.

EFFECT: expansion of the functionality of the bench, reducing the labor intensity of the work on pressure testing a preventer with two rows of rams, as well as improving the quality of pressure testing the pipe rams of the preventer.

1 cl, 4 dwg