Method for estimating the real-time gas-oil ratio of a flowing oil well

Abstract

A method for estimating the gas-oil ratio (GOR) of a flowing oil well in real-time includes installing a first pressure downhole monitoring system in a flowing oil well, and installing a second pressure downhole monitoring system in a flowing oil well such that a pressure gradient can be calculated between a pressure measured by the first pressure downhole monitoring system and a pressure measured by the second pressure downhole monitoring system. Then the pressure is measured at the well-head of the oil well, and previous production test results of the oil well are reviewed in order to collect a liquid flow rate from the measured well-head pressure. Finally, known correlations between liquid flow rates and pressure gradients at constant GOR values are used to determine the GOR of the well.

Dependencies are inferred from the claim text.