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    Stress analysis for plastic material lined tubular structures for boreholes
    23.
    发明授权
    Stress analysis for plastic material lined tubular structures for boreholes 有权

    公开(公告)号：US11755792B2

    公开(公告)日：2023-09-12

    申请号：US17152335

    申请日：2021-01-19

    Applicant: Landmark Graphics Corporation

    Inventor： Zhengchun Liu ,  Robello Samuel ,  Adolfo Gonzales ,  Yongfeng Kang

    IPC: G06F30/20 ,  E21B17/00 ,  G06F119/14 ,  G06F119/08

    CPC classification number: G06F30/20 ,  E21B17/00 ,  E21B2200/20 ,  G06F2119/08 ,  G06F2119/14

    Abstract: The disclosure presents processes for improving the design phase of plastic material lined tubular structures used downhole of a borehole. A plastic material lined tubular structure model is utilized for tubular structures that have a metal layer, a grout layer, and a plastic material layer. The model can use a modified wall thickness for the metal layer. A strength model can be applied to the modified critical dimensions, e.g., wall thickness parameters. A thermal model can be applied to the tubular structure to determine pressure and temperature parameters. The strength model and the thermal model outputs can be utilized by a stress analyzer to determine loads, safety factors, and design limit parameters. The plastic material lined tubular structure model can enable more efficient use of tubular structures, designing a longer operational lifetime, such as in acidic environments, or the use of thinner structures while maintaining a satisfactory operational lifetime.

    STRESS ANALYSIS FOR PLASTIC MATERIAL LINED TUBULAR STRUCTURES FOR BOREHOLES
    24.
    发明申请
    STRESS ANALYSIS FOR PLASTIC MATERIAL LINED TUBULAR STRUCTURES FOR BOREHOLES 有权

    公开(公告)号：US20220229951A1

    公开(公告)日：2022-07-21

    申请号：US17152335

    申请日：2021-01-19

    Applicant: Landmark Graphics Corporation

    Inventor： Zhengchun Liu ,  Robello Samuel ,  Adolfo Gonzales ,  Yongfeng Kang

    IPC: G06F30/20 ,  E21B17/00

    Abstract: The disclosure presents processes for improving the design phase of plastic material lined tubular structures used downhole of a borehole. A plastic material lined tubular structure model is utilized for tubular structures that have a metal layer, a grout layer, and a plastic material layer. The model can use a modified wall thickness for the metal layer. A strength model can be applied to the modified critical dimensions, e.g., wall thickness parameters. A thermal model can be applied to the tubular structure to determine pressure and temperature parameters. The strength model and the thermal model outputs can be utilized by a stress analyzer to determine loads, safety factors, and design limit parameters. The plastic material lined tubular structure model can enable more efficient use of tubular structures, designing a longer operational lifetime, such as in acidic environments, or the use of thinner structures while maintaining a satisfactory operational lifetime.

    Wellbore thermal flow, stress and well loading analysis with jet pump
    25.
    发明授权
    Wellbore thermal flow, stress and well loading analysis with jet pump 有权

    公开(公告)号：US10664632B2

    公开(公告)日：2020-05-26

    申请号：US15035480

    申请日：2013-11-27

    Applicant: LANDMARK GRAPHICS CORPORATION

    Inventor： Adolfo C. Gonzales ,  Robello Samuel ,  Yongfeng Kang ,  Zhengchun Liu

    IPC: G06F17/50 ,  E21B43/12 ,  E21B41/00 ,  G06F30/20

    Abstract: A method for simulating a well system can include providing a well system model, providing a jet pump model, providing at least one calculation engine, inputting an input parameter, defining a mechanical configuration of the well system, integrating a jet pump model into a well system model, computing a solution to a model, and determining at least one production condition of a well system. A computer readable medium can have instructions stored thereon that, when executed by a processor, can cause the processor to perform a method including accessing a well system model, accessing a jet pump model, integrating the jet pump model and the well system model, computing a solution to a combined model, and determining a production condition of a well system.

    Vector-ratio safety factors for wellbore tubular design
    26.
    发明授权
    Vector-ratio safety factors for wellbore tubular design 有权

    公开(公告)号：US10380281B2

    公开(公告)日：2019-08-13

    申请号：US15359397

    申请日：2016-11-22

    Applicant: Landmark Graphics Corporation

    Inventor： Zhengchun Liu ,  Robello Samuel ,  Adolfo Gonzales ,  Yongfeng Kang

    IPC: G06F17/50 ,  E21C41/00 ,  E21B47/06

    Abstract: Systems and methods for determining vector-ratio safety factors for wellbore tubular design are provided. Pressure and temperature data for at least one load point along a tubular component of a wellbore are obtained. An effective failure axial load expected at the load point is calculated during a downhole operation to be performed along one or more sections of the wellbore within a subsurface formation, based on the obtained data. An upper boundary and a lower boundary for the effective failure axial load are determined, based on physical properties of the tubular component at the load point. A midpoint of the effective failure axial load is calculated based on the upper and lower boundaries. A critical failure differential pressure is calculated, based on the midpoint of the effective failure axial load. A vector-ratio safety factor is calculated, based on the critical failure differential pressure relative to the effective failure axial load.

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