# US 12,762,301 B2 · Advanced tubular design methodology with high temperature geothermal and oil/gas cyclic thermal loading effect > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,762,301 B2 - Document ID: US12762301B2 - Status: Granted - Kind: B2 - Application number: 17/592,989 - Filed: 2022-02-04 - Published: 2023-08-10 - Granted: 2026-10-13 - Earliest claimed: 2022-02-04 - Assignees: Landmark Graphics Corporation - Applicants: Landmark Graphics Corporation - Inventors: Yongfeng Kang; Robello Samuel; Vagish Kumar - Web page: https://patentgrep.com/patent/US12762301B2 ## CPC - G06F 30/18: Network design, e.g. design based on topological or interconnect aspects of utility systems, piping, heating ventilation air conditioning [HVAC] or cabling (circuit design at the physical level G06F30/39; network planning tools for wireless communication networks H04W16/18) - E21B 41/00: Equipment or details not covered by groups E21B15/00 - E21B40/00 - E21B 47/07: Temperature - E21B 17/00: Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; {Cables;} Casings; Tubings - E21B 2200/20: Computer models or simulations, e.g. for reservoirs under production, drill bits - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract The disclosure addresses the existing gap in tubular designs and monitoring of tubulars in wellbores by considering high temperature, cyclic thermal loading effects. An example method of designing tubular for use in a well is provided that includes: (1) receiving a well configuration for a well and at least one type of well operation for the well, (2) receiving a selection of a tubular for use in the well, (3) generating a temperature history and a pressure history for the well using the well configuration, the selection of the tubular, the at least one type of well operation, and one or more simulators, and (4) determining, using the temperature history and the pressure history, a derated strength of the tubular based on one or more effects of high temperature, cyclic thermal loadings on the tubular. ## Claims ### Claim 1 A method of designing tubular for use in a well, comprising: receiving a well configuration for a well and at least one type of well operation for the well; receiving a selection of a tubular for use in the well; generating a temperature history and a pressure history for the well using the well configuration, the selection of the tubular, the at least one type of well operation, and one or more simulators; and determining, using the temperature history and the pressure history, a derated strength of the tubular based on one or more effects of high temperature, cyclic thermal loadings on the tubular for monitoring tubulars in real time to reduce downhole failure of the tubulars, wherein the one or more effects include a Bauschinger effect. ### Claim 2 (depends on 1) The method as recited in claim 1, wherein the one or more effects include the Bauschinger effect and at least one of thermal stress relaxation or a thermal deration effect. ### Claim 3 (depends on 1) The method as recited in claim 1, further comprising generating a stress analysis of the tubular based on the derated strength. ### Claim 4 (depends on 1) The method as recited in claim 1, wherein the one or more simulators includes a thermal simulator for generating the temperature history and a hydraulic simulator for generating the pressure history, and a stress simulator for generating the stress analysis, wherein the thermal and the hydraulic simulators cooperate when generating the temperature history and the pressure history. ### Claim 5 (depends on 1) The method as recited in claim 1, wherein the receiving the well configuration, the at least one type of well operation, and the selection of the tubular is via a graphical user interface. ### Claim 6 (depends on 3) The method as recited in claim 3, further comprising verifying the tubular satisfies design requirements for the well based on the stress analysis. ### Claim 7 (depends on 3) The method as recited in claim 3, wherein generating the stress analysis further includes considering a whole well multi-string analysis of the tubular and a single string analysis of the tubular, wherein the whole well multi-string analysis considers a trapped annular pressure buildup effect in the well. ### Claim 8 (depends on 6) The method as recited in claim 6, further comprising receiving another selection for the tubular when the design requirements are not satisfied and using the tubular for operating in the well when the design requirements are satisfied. ### Claim 9 (depends on 6) The method as recited in claim 6, wherein the design requirements include at least one of design factors and design optimizations. ### Claim 10 A computing system for designing tubulars for use in a well, comprising: an interface for receiving a well configuration for a well, at least one type of well operation for the well; and one or more processor configured to perform operations including: generating a temperature history and a pressure history for the well using the well configuration, the at least one type of well operation, and a selection of a tubular for use in the well; and determining, using the temperature history and the pressure history, a derated strength of the tubular to monitor tubulars in real time and reduce downhole failures of the tubulars, wherein the determining is based on a Bauschinger effect and at least one of a thermal stress relaxation effect or a thermal deration effect. ### Claim 11 (depends on 10) The computer system as recited in claim 10, wherein the operations further include generating a stress analysis of the tubular based on the derated strength. ### Claim 12 (depends on 10) The computer system as recited in claim 10, wherein the operations further include verifying the tubular satisfies design factors. ### Claim 13 (depends on 10) The computer system as recited in claim 10, wherein the operations further include verifying the tubular satisfies design optimizations. ### Claim 14 (depends on 10) The computer system as recited in claim 10, further comprising a memory that stores a tubular database and the operations further include selecting the tubular from the tubular database. ### Claim 15 (depends on 11) The computer system as recited in claim 11, wherein generating the stress analysis further includes considering a whole well multi-string analysis of the tubular and a single string analysis of the tubular. ### Claim 16 (depends on 15) The computer system as recited in claim 15, wherein the whole well multi-string analysis considers a trapped annular pressure buildup effect in the well. ### Claim 17 A computer program product having a series of operating instructions stored on a non-transitory computer-readable medium that directs one or more processors when executed thereby to perform operations, the operations comprising: simulating a temperature history and a pressure history for a well using a well configuration, a selection of a tubular, and at least one type of well operation; and determining, using the temperature history and the pressure history, a derated strength of the tubular string based on a Bauschinger effect and at least one of a thermal stress relaxation effect or a thermal deration effect for monitoring tubulars in real time to reduce downhole failure of the tubulars. ### Claim 18 (depends on 17) The computer program product as recited in claim 17, wherein the determining is based on the Bauschinger effect and the thermal stress relaxation effect. ### Claim 19 A method of monitoring a well having tubulars, comprising: receiving sensor data from sensors in a wellbore, wherein the sensor data at least includes temperature data and pressure data; derating, using the sensor data, a yield strength of a tubular in the wellbore based on a Bauschinger effect and at least one of a thermal deration effect or a thermal stress relaxation effect; determining the derated yield strength of the tubular satisfies safety factors; and providing a monitoring status on a screen based on the determining for real time monitoring of the tubulars to reduce failures of the tubulars. ### Claim 20 (depends on 19) The method as recited in claim 19, generating an alert when one or more of the safety factors is unsatisfied.