System and method for determining gas-water ratio in a reservoir fluid

A system comprising:

• a base including a plurality of wheels;
• an enclosed flash separator assembly positioned on the base and including:
• an inlet water line fluidly communicable with a sample cylinder containing a pressurized reservoir fluid;
• a glass trap sealable with a manifold and in fluid communication with the inlet water line to receive the pressurized reservoir fluid, the pressurized reservoir fluid being separable within the glass trap at atmospheric conditions into a flashed gas and a reservoir water;
• and
• a gasometer positioned on the base and in fluid communication with the glass trap via a gasometer flow line, the gasometer being operable to receive the flashed gas and measure a volume, a temperature, and a pressure of the flashed gas,
• wherein a weight and a density of the reservoir water is measured and compared against the volume of the flashed gas to thereby determine a gas-water ratio of the pressurized reservoir fluid.

A method comprising:

• fluidly coupling a sample cylinder containing a pressurized reservoir fluid to an inlet water line;
• receiving the pressurized reservoir fluid in the inlet water line, and conveying the pressurized reservoir fluid to a glass trap sealed with a manifold;
• separating the pressurized reservoir fluid in the glass trap at atmospheric conditions into a flashed gas and a reservoir water;
• receiving the flashed gas in a gasometer flow line in fluid communication with the glass trap via a gasometer flow line;
• measuring a volume, a temperature, and a pressure of the flashed gas with the gasometer;
• measuring a weight and a density of the reservoir water;
• and
• comparing the weight and the density against the volume of the flashed gas and thereby determining a gas-water ratio of the pressurized reservoir fluid.