IP Library Granted Patent US 11,719,683
Granted Patent B2
US 11,719,683 · App. 17/215,591 · Granted Aug 8, 2023

Automated real-time water cut testing and multiphase flowmeter calibration advisory

Inventors: Ali M. Al Shahri (Dhahran, SA); Anas A. Al Shuaibi (Dammam, SA); Mohammed Sami Kanfar (Dammam, SA); Kalid Saad Dosary (Al-Khobar, SA); Abdulaziz A. Alsaleh (Dammam, SA)
Assignee: Saudi Arabian Oil Company
G01N33/2847E21B47/06E21B47/07G01N33/2823E21B2200/20E21B2200/22
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Quick Facts
Patent No.
US 11,719,683
App. No.
17/215,591
Granted
Aug 8, 2023
Kind
B2
Abstract

Systems and methods for generating pressure data from at least two pressure sensors, storing one or more parameters indicative of water cut in a neural network model, receiving pressure data from at least the two pressure sensors respectively indicative of the pressure at two points of a well bore, determining a pressure drop between the two points, generating an input water cut estimate, estimating a dynamic pressure loss to initiate an iterative process, estimating a potential energy loss, inverse modeling a water cut estimate, comparing the water cut estimate to the input water cut estimate to generate a water cut Δ, utilizing the water cut estimate as the input water cut estimate for the iterative process when the water cut Δ exceeds a threshold, and continuing the iterative process until the water cut Δ is below the threshold.

Claims (67)

1. An intelligent water cut estimation system comprising at least two pressure sensors, a neural network model, and a data processor, wherein:

the at least two pressure sensors are configured to generate pressure data respectively associated with two points of a well bore;

the neural network model comprises one or more parameters indicative of water cut associated with a well bore; and

the data processor is communicatively coupled to the at least two pressure sensors and the neural network model and is operable to:

receive pressure data from the at least two pressure sensors respectively indicative of the pressure at each of the two points of the well bore,

determine a pressure drop between the two points based on the received pressure data from the at least two pressure sensors,

generate an input water cut estimate,

estimate a dynamic pressure loss based on the pressure drop, the one or more parameters of the neural network model, and the input water cut estimate to initiate an iterative process,

estimate a potential energy loss based on the dynamic pressure loss and the pressure drop,

inverse model a water cut estimate based on the potential energy loss,

compare the water cut estimate to the input water cut estimate to generate a water cut Δ,

utilize the water cut estimate as the input water cut estimate for the iterative process when the water cut Δ exceeds a threshold, and

continue the iterative process until the water cut Δ is below the threshold.

2. The intelligent water cut estimation system of claim 1 further comprising at least two temperature sensors, wherein the at least two temperature sensors are configured to generate temperature data respectively associated with the two points of the well bore.

3. The intelligent water cut estimation system of claim 2 , wherein the one or more parameters of the neural network model comprise temperature data from the at least two temperature sensors.

4. The intelligent water cut estimation system of claim 1 , wherein the input water cut estimate is based on at least the one or more parameters of the neural network model.

5. The intelligent water cut estimation system of claim 4 , wherein the one or more parameters of the neural network model comprises gross rate, the received pressure data, received temperature data from at least temperature sensors disposed at each of the two points of the well bore, distance between the two points of the well bore, pipe area, fluid properties associated with the well bore, electrical properties associated with the well bore, or combinations thereof.

6. The intelligent water cut estimation system of claim 1 , further comprising a flowmeter associated with the well bore and configured to generate an estimated liquid gross rate of the well bore.

7. The intelligent water cut estimation system of claim 6 , wherein the data processor is further operable to

generate a flowmeter water cut value from the estimated liquid gross rate,

compare the water cut estimate when the iterative process is ended to the flowmeter water cut value to determine a difference,

determine whether the difference is greater than a flowmeter threshold, and

calibrate the flowmeter when the difference is greater than the flowmeter threshold.

8. An intelligent water cut estimation system comprising at least two pressure sensors, at least two temperature sensors, a neural network model, and a data processor, wherein:

the at least two pressure sensors are configured to generate pressure data respectively associated with two points of a well bore;

the at least two temperature sensors are configured to generate temperature data respectively associated with two points of a well bore;

the neural network model comprises one or more parameters indicative of water cut associated with a well bore; and

the data processor is communicatively coupled to the at least two pressure sensors and the neural network model and is operable to:

receive pressure data from the at least two pressure sensors respectively indicative of the pressure at each of the two points of the well bore,

receive temperature data from the at least two temperature sensors respectively indicative of the temperature at each of the two points of the well bore,

determine a pressure drop between the two points based on the received pressure data from the at least two pressure sensors,

generate an input water cut estimate based on at least the one or more parameters of the neural network model and the received temperature data,

estimate a dynamic pressure loss based on the pressure drop, the one or more parameters of the neural network model, and the input water cut estimate to initiate an iterative process,

estimate a potential energy loss based on the dynamic pressure loss and the pressure drop,

inverse model a water cut estimate based on the potential energy loss,

compare the water cut estimate to the input water cut estimate to generate a water cut Δ,

utilize the water cut estimate as the input water cut estimate for the iterative process when the water cut Δ exceeds a threshold, and

continue the iterative process until the water cut Δ is below the threshold.

9. The intelligent water cut estimation system of claim 8 , wherein the one or more parameters of the neural network model comprises gross rate, the received pressure data, the received temperature data, distance between the two points of the well bore, pipe area, fluid properties associated with the well bore, electrical properties associated with the well bore, or combinations thereof.

10. The intelligent water cut estimation system of claim 8 , further comprising a flowmeter associated with the well bore and configured to generate an estimated liquid gross rate of the well bore.

11. The intelligent water cut estimation system of claim 10 , wherein the data processor is further operable to

generate a flowmeter water cut value from the estimated liquid gross rate,

compare the water cut estimate when the iterative process is ended to the flowmeter water cut value to determine a difference,

determine whether the difference is greater than a flowmeter threshold, and

calibrate the flowmeter when the difference is greater than the flowmeter threshold.

12. An intelligent water cut estimation method comprising:

generating pressure data from at least two pressure sensors respectively associated with two points of a well bore;

storing one or more parameters indicative of water cut associated with a well bore in a neural network model;

receiving pressure data, by a data processor, from at least the two pressure sensors respectively indicative of the pressure at two points of the well bore;

determining a pressure drop between the two points based on the received pressure data from the at least two pressure sensors;

generating an input water cut estimate;

estimating a dynamic pressure loss based on the pressure drop, the one or more parameters of a neural network model, and the input water cut estimate to initiate an iterative process;

estimating a potential energy loss based on the dynamic pressure loss and the pressure drop;

inverse modeling a water cut estimate based on the potential energy loss;

comparing the water cut estimate to the input water cut estimate to generate a water cut Δ;

utilizing the water cut estimate as the input water cut estimate for the iterative process when the water cut Δ exceeds a threshold; and

continuing the iterative process until the water cut Δ is below the threshold.

13. The intelligent water cut estimation method of claim 12 , further comprising generating temperature data from at least two temperature sensors respectively associated with the two points of the well bore.

14. The intelligent water cut estimation method of claim 13 , wherein the one or more parameters of the neural network model comprise temperature data from the at least two temperature sensors.

15. The intelligent water cut estimation method of claim 12 , wherein the input water cut estimate is based on at least the one or more parameters of the neural network model.

16. The intelligent water cut estimation method of claim 15 , wherein the one or more parameters of the neural network model comprises gross rate, the received pressure data, received temperature data from at least temperature sensors disposed at each of the two points of the well bore, distance between the two points of the well bore, pipe area, fluid properties associated with the well bore, electrical properties associated with the well bore, or combinations thereof.

17. The intelligent water cut estimation method of claim 12 , further comprising a flowmeter associated with the well bore and configured to generate an estimated liquid gross rate of the well bore.

18. The intelligent water cut estimation method of claim 17 , further comprising:

generating a flowmeter water cut value from the estimated liquid gross rate;

comparing the water cut estimate when the iterative process is ended to the flowmeter water cut value to determine a difference;

determining whether the difference is greater than a flowmeter threshold; and

calibrating the flowmeter when the difference is greater than the flowmeter threshold.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 29, 2021
From: AL SHAHRI, ALI M.; AL SHUAIBI, ANAS A.; KANFAR, MOHAMMED SAMI; DOSARY, KALID SAAD; ALSALEH, ABDULAZIZ A.
To: SAUDI ARABIAN OIL COMPANY
Reel/Frame 055753/0806 →
Continuity (2)
Provisional Application 63002469 · Mar 31, 2020
Related Publication 20210302405A1 · Sep 30, 2021