LIQUID METER CLEANING DEVICE Russian patent published in 2023 - IPC G01F15/12 G08B3/02 

FIELD: well drilling.

SUBSTANCE: invention relates to means for cleaning a downhole fluid quantity meter. The device consists of a horizontal cylindrical body (2) of a liquid quantity meter located above the main pipeline (1), having an upper inlet (3) and a lower outlet (4) branch pipes. In the housing (2) there is a measuring chamber, the discrete rotation of which is configured for recording impulses by the sensor. In the section of the main pipeline (1) between the inlet (3) and outlet (4) branch pipes there is a locking device (5). The main pipeline (1) is additionally equipped with an inlet valve (6) located in front of the inlet pipe (3) along the well fluid flow, and an outlet valve (7) located after the outlet pipe (4) along the well fluid flow. The inlet pipe (3) is equipped with a sealed chamber (8) from above, connected to the inlet pipe (3) through parallel inlet (9) and outlet (10) valves. The inlet valve (9) is configured to pass the well fluid towards the chamber (8). The outlet valve (10) is configured for opening at a pressure difference between the chamber (8) and the housing (2), sufficient to clean the housing (2) and the measuring chamber installed inside it. The chamber (8) is configured to withstand a pressure of at least 4 MPa.

EFFECT: reduced cleaning time, ease of use.

3 cl, 1 dwg