Method of determining gas-oil ratios from producing oil wells
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United States of America Patent
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Mar 18, 1997
Grant Date -
N/A
app pub date -
Apr 25, 1996
filing date -
Apr 26, 1995
priority date (Note) -
Expired
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Abstract
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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