Abstract
With self-developed solubility determining unit, gas volume solubility of Daqing waxy crude oil saturated with nitrogen and natural gas was measured respectively at temperatures of 50°C, 55°C, 60°C and 65°C and under pressures from 2 to 20 MPa. The gas volume solubility in the crude oil is increased with the increasing of pressure for both nitrogen and natural gas at every temperature tested, which the increased extent of gas solubility of natural gas is much higher than that of nitrogen. Solubility of natural gas increases with the decreasing of temperature, but that of nitrogen increases with the increasing of temperature. Pressure has a main effect on gas volume solubility.
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