DEVICE AND METHOD FOR UNDERWATER TREATMENT OF FLUID FROM WELL Russian patent published in 2018 - IPC B01D19/00 E21B43/36 

FIELD: oil and gas industry.

SUBSTANCE: underwater device comprises a pipeline configured to receive a flow of the mentioned fluid containing liquid and gas, a branch extending through the wall of the pipeline, a compressor configured to compress the separated gas. The branch is configured to discharge gas therethrough from the pipeline to separate gas from the liquid and obtain a separated gas and a separated liquid. A portion of the pipeline located downstream of the mentioned branch is configured to receive the separated liquid. The mentioned portion of the pipeline is inclined at least at a portion of its length, and the pipeline is arranged to be placed on the seabed or near it. The inclined portion of the pipeline is inclined in the direction of flow movement between the first point of the pipeline and the second point of the pipeline. The seabed at the second point is lower than at the first point, and there is a relief depression at the second point on the seabed. The flow of fluid is fed into the pipeline. The gas is released from the pipeline through the branch. The separated gas is compressed.

EFFECT: reduction of costs for implementation of the technical solution, simplicity and efficiency of fluid treatment, prevention of equipment damage.

23 cl, 3 dwg