ICE FORMATION PREVENTION SYSTEM IN THE GAS GATHERING PIPELINE Russian patent published in 2021 - IPC E21B37/06 F17D3/12 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry. The system for preventing ice formation in the gas gathering pipeline includes a gas gathering pipeline 1, an inhibitor supply device, a control station 9, and a gas gathering pipeline blowing device. The device for purging the gas gathering pipeline includes a shut-off ball valve 11, a purge line 12, a two-phase separator 13 and a flow meter for the liquid 14 to be separated. The inhibitor supply device consists of a supply tank for the inhibitor 3, an inhibitor line 4 laid along the gas gathering pipeline 1, a pump 5 and a check valve 6. The points of inhibitor injection into the gas collecting pipeline 1 are equipped with electrically controlled two-position valves 7 and flow control washers 8. The outlet of the supply container for the inhibitor 3 through pump 5 and check valve 6 is connected to the inlet of the inhibitor line 4. Outlets of the inhibitor line 4 are connected through the electrically controlled two-position valves 7 and the flow control washers 8 to the points of the inhibitor introduction into the gas gathering line 1. The gas gathering pipeline 1 is equipped with a flow meter 2, a first drip catcher 15 at the beginning of the gas gathering pipeline, a second drip catcher 16 at the end of the gas gathering pipeline before being diverted to the purge line 12, and gas temperature measurement sensors 10 at the inhibitor injection points. The outputs of the gas temperature measurement sensors 10 are connected to the inputs of the control station 9, the outputs of which are connected to the control inputs of the electrically controlled two-position valves 7.

EFFECT: increasing the operational reliability of field pipelines while saving ice inhibitor.

1 cl, 1 dwg