SYSTEM, VESSEL AND PROCEDURE FOR EXTRACTION OF OIL AND HEAVY FRACTIONS FROM COLLECTORS UNDER SEA BOTTOM Russian patent published in 2011 - IPC E21B43/01 E21B43/40 

FIELD: gas and oil production.

SUBSTANCE: here is disclosed system containing field installation with at least one producer and one pressure well connected with risers with points of filling and emptying, vessel with device connected with point of filling and emptying, receiving unit with device for filling and emptying reservoir on vessel. According to the invention the vessel is equipped with a three-phase separator of high pressure, with a pumping compressor and with equipment of water cleaning or equipment for water pumping. The receiving unit consists of devices for filling and emptying of high pressure at the vessel connected with the field installation wherein well fluid medium of high pressure is supplied into the separator and is divided into light fractions of gas, oil and heavy fractions of gas and water. Also, oil and heavy fractions can be supplied into storage reservoirs of high pressure on the vessel. They contain high pressure gas replaced from reservoirs when the pumping compressor pumps gas together with light fractions into a collector. Upon transportation of oil and heavy fractions of gas to the receiving unit they can be emptied by replacement of reservoir content with high pressure gas supplied from the receiving unit.

EFFECT: raised reliability of devices and efficiency of procedure.

32 cl, 3 dwg