Patent ID: 11860149
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Measurement (Instruments)
Classification: CPC E  G | IPC E  G

Claim 11:
12. A method for dynamic real-time water-cut monitoring, comprising:
determining, by a computing device, whether to use a direct approach for determining water-cut from a pipe of an oil well; and
in response to determining not to use the direct approach performing an iterative process that includes:
(a) determining, by the computing device, an initial guess for water-cut;
(b) estimating, by the computing device, at least one dynamic pressure loss across a distance between two pressure sensors;
(c) estimating, by the computing device, at least one potential energy pressure loss across the distance between the two sensors;
(d) estimating, by the computing device, a value for water-cut from the at least one dynamic pressure loss and the at least one potential energy pressure loss;
(e) determining, by the computing device, whether the initial guess is within a predetermined threshold of the value for water-cut;
(f) in response to determining that the initial guess is within the predetermined threshold of the value for water-cut, outputting, by the computing device, the value for water-cut; and
(g) in response to determining that the initial guess is not within the predetermined threshold of the value for water-cut, repeating, by the computing device, (b)-(f) of the iterative approach to recalculate water-cut using the value for water-cut as the initial guess.