TEST STAND FOR HYDRAULIC TESTING OF SAND OR PROPPANT REMOVAL DEVICES Russian patent published in 2022 - IPC E21B47/00 E21B21/00 E21B33/03 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry and is intended for hydraulic testing of oilfield equipment, in particular, it can be used to test a device for removing a sand or proppant plug on the basis of production service in order to determine the health of the device before working in a well. The test stand for hydraulic testing of devices for removing sand or proppant plugs contains a pump unit with a pressure gauge, a line for injecting a working fluid connected to the equipment under test. A two-position switch for the flow of the working fluid is installed in the discharge line, dividing the discharge line into the first and second discharge lines. The first injection line is connected through a sub to the upper end of the equipment under test. The stand is equipped with a stand with an internal thread in the upper part for mounting the equipment under test. From below, the rack is equipped with a side outlet connected to the second discharge line. The lower end of the rack is plugged and equipped with supports that hold the equipment under test in a vertical position. The head of the equipment under test is equipped on top with an external thread for rigid mounting with a stand, a central channel with a valve cage screwed into it, equipped with a ball. A landing saddle is installed at the bottom of the cage. The cage is equipped with through channels for bypassing the working fluid during backwashing and a restrictive ring in the upper part. The test bench is equipped with plugs installed in the jet channels of the head before pressure testing, and a tank for the working fluid. On the one hand, the pumping unit is connected to the tank by a suction line. On the other side, the flow switch is connected to the tank with a drain line.

EFFECT: simplification of the design of the test bench and increase of the reliability of the equipment under test - devices for removing plugs.

1 cl, 4 dwg