Method of determining gas-oil ratios from producing oil wells

Details Method of determining gas-oil ratios from producing oil wells Method of determining gas-oil ratios from producing oil wells

E - Fixed Constructions

21

B

E21B 47/00 (2006.01) E21B 49/00 (2006.01) E21B 49/08 (2006.01)

Patent

CA 2174885

A method is provided for simulating a linear solution gas curve for the determination of the gas-oil ratio for a crude oil well at any pressure using only surface measurements of the well's annular gas rate, a determination of the flowing bottom hole pressure, and knowledge of the bubble-point pressure. From the resulting curve, relationships can be formulated for determining the total produced gas rate. In an alternate embodiment, knowing the total gas rate for a crude oil well, a solution gas curve is simulated and the above relationships can be applied in reverse manner to predict several well characteristics, including either of the crude oil bubble-point pressure, the flowing bottom hole pressure, or the annular gas rate.

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