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    Estimating casing wear due to drill string reciprocation
    151.
    发明授权
    Estimating casing wear due to drill string reciprocation 有权

    公开(公告)号：US09752388B2

    公开(公告)日：2017-09-05

    申请号：US14917398

    申请日：2015-06-12

    Applicant: Landmark Graphics Corporation

    Inventor： Aniket ,  Adolfo Gonzales ,  Robello Samuel

    IPC: E21B12/02 ,  E21B49/00 ,  G06F17/50 ,  E21B41/00

    CPC classification number: E21B12/02 ,  E21B41/0092 ,  E21B47/00 ,  G06F17/5009 ,  G06F2217/16

    Abstract: Estimating casing wear during a reciprocation portion of a drilling operation may take into account the forces that cause casing wear during the up and down strokes independently. For example, during a drilling operation, a method may include reciprocating the drill string through the wellbore for a plurality of up strokes and a plurality of down strokes according to reciprocation parameters; calculating an up stroke normal force and a down stroke normal force for the casing or a section thereof; calculating up and down stroke casing wears based on the up and down stroke normal forces, respectively, using a reciprocation casing wear model; calculating a reciprocation casing wear based on the up and down stroke casing wears; and calculating a total casing wear for the casing or the section thereof based on the reciprocation casing wear using a total casing wear model.

    METHOD AND LOAD ANALYSIS FOR MULTI-OFF-CENTER TOOLS
    157.
    发明申请
    METHOD AND LOAD ANALYSIS FOR MULTI-OFF-CENTER TOOLS 审中-公开
    多中心工具的方法和负载分析

    公开(公告)号：US20160147918A1

    公开(公告)日：2016-05-26

    申请号：US14786236

    申请日：2013-09-25

    Applicant: LANDMARK GRAPHICS CORPORATION

    Inventor： Robello Samuel ,  Yuan Zhang ,  Aniket N/A

    IPC: G06F17/50 ,  G06F17/10

    CPC classification number: G06F17/5018 ,  E21B17/10 ,  E21B43/14

    Abstract: Various embodiments include apparatus and methods to perform a load analysis for multi-off-center tools. Off-center components of a completion string experience additional downhole side and drag forces due to contact with casing and liner walls which may lead to excessive loading and stresses leading to failures. Systems and techniques are provided to analyze such situations. Additional apparatus, systems, and methods are disclosed.

    Abstract translation: 各种实施例包括用于对多中心工具执行负载分析的装置和方法。 完成柱的偏心部件经受额外的井下侧和由于与壳体和衬套壁的接触而引起的牵引力，这可能导致过度的加载和应力导致故障。 提供系统和技术来分析这种情况。 公开了附加装置，系统和方法。

    METHOD AND SYSTEM FOR PREDICTING DRILLING EVENTS
    158.
    发明申请
    METHOD AND SYSTEM FOR PREDICTING DRILLING EVENTS 审中-公开
    预测钻井事件的方法和系统

    公开(公告)号：US20150369042A1

    公开(公告)日：2015-12-24

    申请号：US14765822

    申请日：2013-02-27

    Applicant: LANDMARK GRAPHICS CORPORATION

    Inventor： Robello Samuel ,  Olivier R. Germain

    IPC: E21B49/00 ,  E21B43/10 ,  E21B7/04

    CPC classification number: E21B49/003 ,  E21B7/04 ,  E21B47/022 ,  G05B13/048

    Abstract: Calculating wellbore energy. At least some of the illustrative embodiments are methods including: calculating an expected wellbore energy for a planned wellpath, the calculating by a computer system; calculating an expected tortuosity of the planned wellpath; calculating a first value indicative of probability of occurrence of a drilling event for drilling along the planned wellpath, the first value based on the expected wellbore energy and the expected tortuosity; and then drilling a wellbore along at least a first portion of the planned wellpath if the first value indicates the probability of the drilling event is less than a predetermined threshold.

    Abstract translation: 计算井筒能量。 至少一些说明性实施例是方法，包括：计算计划井道的预期井筒能量，由计算机系统计算; 计算计划井道的预期曲折度; 计算指示沿着所述计划的井道钻探的钻井事件的发生概率的第一值，所述第一值基于所述预期的井眼能量和预期的曲折度; 然后如果所述第一值指示所述钻井事件的概率小于预定阈值，则沿所述计划井道的至少第一部分钻井井。

    SYSTEM AND METHOD FOR PREDICTING AND VISUALIZING DRILLING EVENTS
    159.
    发明申请
    SYSTEM AND METHOD FOR PREDICTING AND VISUALIZING DRILLING EVENTS 审中-公开
    用于预测和可视化钻井事件的系统和方法

    公开(公告)号：US20150315897A1

    公开(公告)日：2015-11-05

    申请号：US14655284

    申请日：2013-01-03

    Applicant: LANDMARK GRAPHICS CORPORATION

    Inventor： Robello Samuel ,  Umesh N. Reddy

    IPC: E21B47/00 ,  E21B47/06 ,  E21B47/08

    CPC classification number: E21B47/0002 ,  E21B41/00 ,  E21B44/00 ,  E21B47/06 ,  E21B47/08

    Abstract: Predicting and visualizing drilling events. At least some of the example embodiments are methods including: receiving data indicative of location of a first wellbore; identifying an offset well, the offset well within a predetermined distance of the first wellbore, the identifying by the computer system based on the data indicative of location of the first wellbore; reading data associated with the offset well, the reading by the computer system; generating a value indicative of probability of occurrence of a drilling event based on the data associated with the offset well; plotting the value indicative of probability of occurrence of the drilling event associated with a direction relative to the first wellbore, the plotting on a display device coupled to the computer system; and then adjusting a drilling parameter of the first wellbore based on the value indicative of probability of occurrence of the at least one drilling event.

    Abstract translation: 预测和可视化钻井事件。 示例实施例中的至少一些是方法，包括：接收指示第一井筒位置的数据; 识别偏移井，所述偏移阱在所述第一井筒的预定距离内，由所述计算机系统基于指示所述第一井眼的位置的数据进行识别; 读取与偏移量相关的数据，由计算机系统读取; 基于与偏移井相关联的数据生成表示钻井事件发生概率的值; 绘制指示与相对于第一井筒的方向相关联的钻井事件的发生概率的值，绘图在耦合到计算机系统的显示设备上; 然后基于指示所述至少一个钻井事件的发生概率的值来调整所述第一井筒的钻井参数。

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