VECTOR-RATIO SAFETY FACTORS FOR WELLBORE TUBULAR DESIGN

    公开(公告)号:US20180142536A1

    公开(公告)日:2018-05-24

    申请号:US15359397

    申请日:2016-11-22

    CPC classification number: G06F17/5009 E21B47/06 E21C41/00

    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.

    Casing wear estimation
    52.
    发明授权

    公开(公告)号:US09976416B2

    公开(公告)日:2018-05-22

    申请号:US14355436

    申请日:2013-06-25

    CPC classification number: E21B49/003 E21B44/00 E21B47/00 G01N29/04

    Abstract: Casing wear estimation. At least some of the illustrative embodiments are methods including: calculating a value indicative of static casing wear of the drilling operation, the static casing wear caused by interaction of a drill string against an inside diameter of a casing; calculating a value indicative of impact casing wear of the drilling operation, the impact casing wear caused by interaction of the drill string against the inside diameter of a casing; and combining the value indicative of static casing wear and the value indicative of impact casing wear to determine the value indicative of aggregate casing wear.

    ADJUSTING SURVEY POINTS POST-CASING FOR IMPROVED WEAR ESTIMATION

    公开(公告)号:US20170204720A1

    公开(公告)日:2017-07-20

    申请号:US15328414

    申请日:2014-09-08

    Abstract: Disclosed embodiments include a method for estimating casing wear including the operations of: obtaining locations of survet points along a borehole, said survey point locations representing a borehole trajectory; casing at least a portion of the borehole with a casing string; deriving locations of adjusted survey points that represent a casing trajectory along said portion of the borehole, the casing trajectory being different from the borehole trajectory; estimating, as a function of position along said casing string, a side force of a drill string against the casing string; computing, as a function of position along the casing string, casing wear based at least in part on the side force; and generating a notification of any positions where casing wear exceeds a threshold.

    ESTIMATING CASING WEAR
    56.
    发明申请
    ESTIMATING CASING WEAR 有权
    估计车身磨损

    公开(公告)号:US20160119591A1

    公开(公告)日:2016-04-28

    申请号:US14889810

    申请日:2013-07-03

    Inventor: Robello Samuel

    Abstract: Estimating casing wear. At least some of the illustrative embodiments are methods including: capturing an image comprising cuttings and casing wear particles on a shale shaker in a drilling operation, the capturing by at least one camera associated with the shale shaker; identifying casing wear particles shown in the image, the identifying by a computer system; and estimating a volume of casing wear based on the identifying.

    Abstract translation: 估计套管磨损。 示例性实施例中的至少一些是包括在钻井操作中将包括切屑和壳体磨损颗​​粒的图像捕获在页岩振荡器上的方法,由至少一个与该页岩振荡器相关联的相机进行捕获; 识别图像中显示的外壳磨损颗粒,由计算机系统识别; 并基于识别估计套管磨损的体积。

    METHOD AND SYSTEM FOR PERFORMING FRICTION FACTOR CALIBRATION
    57.
    发明申请
    METHOD AND SYSTEM FOR PERFORMING FRICTION FACTOR CALIBRATION 有权
    执行摩擦因子校准的方法和系统

    公开(公告)号:US20150361779A1

    公开(公告)日:2015-12-17

    申请号:US14765831

    申请日:2013-02-27

    CPC classification number: E21B47/00 E21B3/00 E21B44/00

    Abstract: Calibrating Friction Factors. At least some of the illustrative embodiments are methods including: calibrating friction factor for a drilling operation by: plotting on a display device the expected hook load versus depth for the drilling operation; displaying plot points on the display device, each plot point indicative of a measured hook load versus depth for the drilling operation; selecting a plot point associated with a depth, the selecting responsive to a cursor hovering over the plot point on the display device; displaying a friction factor values which correlates the expected hook load versus depth for the particular depth to the measured hook load versus depth for the plot point, selecting the value responsive to the cursor hovering over the value; and then shifting on the display device at least a portion of the indication of expected hook load versus depth based on the value of friction factor.

    Abstract translation: 校准摩擦因子。 示例性实施例中的至少一些是包括:通过以下步骤来校准用于钻孔操作的摩擦系数:在显示装置上绘制钻孔操作的预期挂钩负载与深度; 在显示设备上显示绘图点,每个绘图点指示测量的钩子负载与钻孔操作的深度; 选择与深度相关联的绘图点,所述选择响应于光标悬停在所述显示设备上的绘图点上; 显示摩擦系数值,其将预期的钩子负载与特定深度的深度相关联到测量的钩子负载对于绘图点的深度,选择响应于光标悬停在该值上的值; 然后基于摩擦系数的值在显示装置上移动预期挂钩负载与深度的指示的至少一部分。

    Systems and methods to determine torque and drag of a downhole string

    公开(公告)号:US12258856B2

    公开(公告)日:2025-03-25

    申请号:US17612543

    申请日:2020-01-22

    Abstract: The embodiments include systems and methods to determine torque and drag of a string. A method includes analyzing a plurality of continuous segments of a string deployed in a wellbore, and determining a deflection of the plurality of continuous segments from a node of the string and a tortuosity deflection of the wellbore. In response to a determination that deflection of the plurality of continuous segments from the node of the string is greater than the tortuosity deflection of the wellbore, the method includes applying a soft string model to determine a torque and a drag of the string. In response to a determination that deflection of the plurality of continuous segments from the node of the string is not greater than the tortuosity deflection of the wellbore, the method includes applying a stiff string model to determine a torque and a drag of the string.

    BRITTLE-BURST STRENGTH FOR WELL SYSTEM TUBULAR INTEGRITY

    公开(公告)号:US20240133288A1

    公开(公告)日:2024-04-25

    申请号:US17970862

    申请日:2022-10-20

    CPC classification number: E21B47/007

    Abstract: A system can receive data relating to a tubular of a well system. The system can execute a first module to determine first outputs. The system can execute a second module to determine second outputs based on the first outputs. The system can execute a third module to determine third outputs based on the first outputs. The second outputs can include a crack-initiation fracture pressure, and the third outputs can include a crack-propagation fracture pressure. The system can identify a brittle-burst strength of the tubular from among the second outputs, the third outputs, and a standard burst strength of the tubular. The system can provide the brittle-burst strength of the tubular to facilitate an adjustment to the tubular to optimize a wellbore operation associated with the well system.

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