A METHOD AND A PLANT FOR RECOVERING HYDROCARBON OIL SATURATED WITH GAS FROM AN OFFSHORE DRILLING WELL

摘要

PCT No. PCT/NO88/00056 Sec. 371 Date Dec. 7, 1989 Sec. 102(e) Date Dec. 7, 1989 PCT Filed Jun. 22, 1988 PCT Pub. No. WO88/10397 PCT Pub. Date Dec. 29, 1988.A method is disclosed for transport of hydrocarbons in a pipeline flow across large distances, from a first location at an offshore hydrocarbon reservoir to a second location. At said first location a liquid absorbent is provided in the form of a gas-poor hydrocarbon liquid flow. A flow of gas saturated hydrocarbon liquid and released associated hydrocarbon gas is supplied to the gas-poor liquid flow at first location, the volume of gas-poor hydrocarbon liquid being selected so as to be sufficient for all released associated hydrocarbon gas to be absorbed by the gas-poor hydrocarbon liquid. Then the hydrocarbon liquid with absorbed hydrocarbon gas is transported to said second location. A plant for transport of hydrocarbons in a pipeline flow is also disclosed. The plant comprises an absorption chamber (6) at a first location. Absorption chamber (6) is connected to a well pipe (3). At a second location a separator plant (9) is provided. A first pipeline extends from the liquid portion of separator plant (9) to absorption chamber (6). A second pipeline (7) connects absorption chamber (6) with separator plant (9). In said first pipeline (10) the flowing medium can be pressurized by the aid of a high pressure pump (11).