# US 12,110,777 B2 · Auto-correction for water cut measurements from multi-phase flowmeter in undersaturated oil wells > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,110,777 B2 - Document ID: US12110777B2 - Status: Granted - Kind: B2 - Application number: 17/668,129 - Filed: 2022-02-09 - Published: 2023-08-10 - Granted: 2024-10-08 - Earliest claimed: 2022-02-09 - Assignees: Saudi Arabian Oil Company - Applicants: Saudi Arabian Oil Company - Inventors: Mohammed H. Alali; Anas A. Shuaibi; Abdulaziz S. Nuaim - Web page: https://patentgrep.com/patent/US12110777B2 ## CPC - E21B 43/385: {by reinjecting the separated materials into an earth formation in the same well} - E21B 47/10: Locating fluid leaks, intrusions or movements - E21B 43/121: {Lifting well fluids (monitoring of down-hole pump systems E21B47/008)} - E21B 49/0875: {determining specific fluid parameters} - E21B 47/07: Temperature - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract Systems and methods include a computer-implemented method for determining a gas-oil rate (GOR) for an oil well. A measured GOR is determined for an oil well. A measured water cut (WC) is determined for the oil well. An initial solution of the GOR is determined for the oil well. A corrected WC is determined for the oil well based on a function of the measured GOR, the measured WC, and the initial solution of the GOR. ## Claims ### Claim 1 A computer-implemented method, comprising: determining a gas-oil rate (GOR) for an oil well measured before water injection; determining a measured water cut (WC) for the oil well; determining an initial solution GOR for the oil well; determining a corrected WC for the oil well based on a function comprising a difference between a ceiling value and a ratio of the GOR relative to the measured WC, and the initial solution GOR; presenting, in a user interface based on the corrected WC for the oil well, suggestions for implementing improvements in production at the oil well, comprising suggestions for changes to parameters used in drilling at the oil well; receiving, through the user interface, user selections of the suggestions for changes to parameters; and implementing, using the user selections to parameters, changes in drilling at the oil well. ### Claim 2 (depends on 1) The computer-implemented method of claim 1, further comprising: utilizing a pressure/volume/temperature (PVT) study on the oil well; and determining a proper initial solution GOR based on the PVT study. ### Claim 3 (depends on 1) The computer-implemented method of claim 1, wherein determining the measured GOR for the oil well comprises determining the measured GOR when the oil well is operated in under-saturated conditions. ### Claim 4 (depends on 1) The computer-implemented method of claim 1, further comprising correcting a graph relating values of phases of the oil well, comprising a water phase, an oil phase, and a gas phase. ### Claim 5 (depends on 4) The computer-implemented method of claim 4, wherein the graph relating the values of phases of the oil well comprises tie-lines connecting pairs of 100 percent points of the phases. ### Claim 6 (depends on 1) The computer-implemented method of claim 1, wherein determining the corrected WC comprises determining the ceiling value for the corrected WC when the function produces a corrected WC above the ceiling value. ### Claim 7 (depends on 1) The computer-implemented method of claim 1, wherein determining the corrected WC comprises determining a floor value for the corrected WC when the function produces a corrected WC below the floor value. ### Claim 8 A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising: determining a gas-oil rate (GOR) for an oil well measured before water injection; determining a measured water cut (WC) for the oil well; determining an initial solution GOR for the oil well; determining a corrected WC for the oil well based on a function comprising a difference between a ceiling value and a ratio of the GOR relative to the measured WC, and the initial solution GOR; presenting, in a user interface based on the corrected WC for the oil well, suggestions for implementing improvements in production at the oil well, comprising suggestions for changes to parameters used in drilling at the oil well; receiving, through the user interface, user selections of the suggestions for changes to parameters; and implementing, using the user selections to parameters, changes in drilling at the oil well. ### Claim 9 (depends on 8) The non-transitory, computer-readable medium of claim 8, the operations further comprising: utilizing a pressure/volume/temperature (PVT) study on the oil well; and determining a proper initial solution GOR based on the PVT study. ### Claim 10 (depends on 8) The non-transitory, computer-readable medium of claim 8, wherein determining the measured GOR for the oil well comprises determining the measured GOR when the oil well is operated in under-saturated conditions. ### Claim 11 (depends on 8) The non-transitory, computer-readable medium of claim 8, the operations further comprising correcting a graph relating values of phases of the oil well, comprising a water phase, an oil phase, and a gas phase. ### Claim 12 (depends on 11) The non-transitory, computer-readable medium of claim 11, wherein the graph relating the values of phases of the oil well comprises tie-lines connecting pairs of 100 percent points of the phases. ### Claim 13 (depends on 8) The non-transitory, computer-readable medium of claim 8, wherein determining the corrected WC comprises determining the ceiling value for the corrected WC when the function produces a corrected WC above the ceiling value. ### Claim 14 (depends on 8) The non-transitory, computer-readable medium of claim 8, wherein determining the corrected WC comprises determining a floor value for the corrected WC when the function produces a corrected WC below the floor value. ### Claim 15 A computer-implemented system, comprising: one or more processors; and a non-transitory computer-readable storage medium coupled to the one or more processors and storing programming instructions for execution by the one or more processors, the programming instructions instructing the one or more processors to perform operations comprising: determining a gas-oil rate (GOR) for an oil well measured before water injection; determining a measured water cut (WC) for the oil well; determining an initial solution GOR for the oil well; determining a corrected WC for the oil well based on a function comprising a difference between a ceiling value and a ratio of the GOR relative to the measured WC, and the initial solution GOR; presenting, in a user interface based on the corrected WC for the oil well, suggestions for implementing improvements in production at the oil well, comprising suggestions for changes to parameters used in drilling at the oil well; receiving, through the user interface, user selections of the suggestions for changes to parameters; and implementing, using the user selections to parameters, changes in drilling at the oil well. ### Claim 16 (depends on 15) The computer-implemented system of claim 15, the operations further comprising: utilizing a pressure/volume/temperature (PVT) study on the oil well; and determining a proper initial solution GOR based on the PVT study. ### Claim 17 (depends on 15) The computer-implemented system of claim 15, wherein determining the measured GOR for the oil well comprises determining the measured GOR when the oil well is operated in under-saturated conditions. ### Claim 18 (depends on 15) The computer-implemented system of claim 15, the operations further comprising correcting a graph relating values of phases of the oil well, comprising a water phase, an oil phase, and a gas phase. ### Claim 19 (depends on 18) The computer-implemented system of claim 18, wherein the graph relating the values of phases of the oil well comprises tie-lines connecting pairs of 100 percent points of the phases. ### Claim 20 (depends on 15) The computer-implemented system of claim 15, wherein determining the corrected WC comprises determining the ceiling value for the corrected WC when the function produces a corrected WC above the ceiling value.