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    WELL PLANNING BASED ON HAZARD PREDICTIVE MODELS
    2.
    发明公开
    WELL PLANNING BASED ON HAZARD PREDICTIVE MODELS 审中-公开

    公开(公告)号：US20230195952A1

    公开(公告)日：2023-06-22

    申请号：US17999291

    申请日：2021-05-20

    Applicant: Schlumberger Technology Corporation

    Inventor： Valerian Guillot ,  Florian Karpfinger ,  Ali Ozbek ,  Riadh Boualleg ,  Ling Li

    IPC: G06F30/13 ,  E21B44/00 ,  E21B7/04 ,  E21B41/00 ,  E21B49/00

    CPC classification number: G06F30/13 ,  E21B7/04 ,  E21B41/00 ,  E21B44/00 ,  E21B49/00 ,  E21B2200/20

    Abstract: A method to design well trajectories includes determining dogleg severity as a function of inclination, and a corresponding rate of penetration performance of the tool by a hybrid model including physical modelling and machine learning correction. The method includes solving for optimal steering parameters to predict a dogleg severity as close as possible to a desired dogleg severity at a given inclination of the trajectory, which is repeated for dogleg severity and inclination combinations of interest. The rate of penetration for feasible points is also determined and a rate of penetration (or time-to-target) map can be produced. Potential trajectories are then evaluated relative to the map to estimate drilling time-to-target, and an optimal trajectory can be selected that has a lowest time-to-target while also being feasible for the tool and optionally avoiding risks or downhole obstacles.

    Methods and Apparatus for Estimating Borehole Mud Slownesses
    6.
    发明申请
    Methods and Apparatus for Estimating Borehole Mud Slownesses 有权
    井眼泥浆缓慢评估方法与装置

    公开(公告)号：US20140204710A1

    公开(公告)日：2014-07-24

    申请号：US13746284

    申请日：2013-01-21

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Florian Karpfinger ,  John Walsh ,  Romain Prioul

    IPC: G01V1/50

    CPC classification number: G01V1/50 ,  E21B47/18 ,  G01V2210/6222

    Abstract: Methods and apparatus for estimating borehole mud slownesses are disclosed. An example method includes estimating a borehole drilling fluid slowness value based on a tube wave modulus value, a tube-wave slowness value, and a drilling fluid density value. The borehole is associated with an anisotropic elastic medium.

    Abstract translation: 公开了用于估计井眼泥浆缓慢的方法和装置。 示例性方法包括基于管波模量值，管波慢度值和钻井液密度值来估计钻孔钻井液慢度值。 钻孔与各向异性弹性介质相关联。

    WELLBORE PLANNER
    7.
    发明申请
    WELLBORE PLANNER 有权

    公开(公告)号：US20230053857A1

    公开(公告)日：2023-02-23

    申请号：US17821172

    申请日：2022-08-21

    Applicant: Schlumberger Technology Corporation

    Inventor： Valerian Guillot ,  Ho Bun Lau ,  John Morrison Whyte ,  Florian Karpfinger

    IPC: E21B41/00 ,  E21B49/00 ,  E21B21/00

    Abstract: A downhole wellbore planner builds a fracture model of a wellbore using fracture data identified from geological information. Using the fracture model and a target wellbore location at the formation, the wellbore planner may identify or select one or more lost circulation materials (LCMs). The drilling operator may then procure the LCMs before drilling the wellbore. In this manner, the impact of a lost circulation event may be reduced by having the LCMs on site or nearby.

    ASSESSING CURABILITY IN LOST CIRCULATION EVENTS
    9.
    发明申请
    ASSESSING CURABILITY IN LOST CIRCULATION EVENTS 有权

    公开(公告)号：US20240376791A1

    公开(公告)日：2024-11-14

    申请号：US18627474

    申请日：2024-04-05

    Applicant: Schlumberger Technology Corporation

    Inventor： Guillot Valerian ,  Mauricio Corona ,  Florian Karpfinger ,  Alexey Ruzhnikov

    IPC: E21B21/00 ,  E21B44/00 ,  E21B47/117

    Abstract: A method for characterizing a subsurface interval where drilling fluid is being lost includes receiving surface drilling values captured while drilling a wellbore through the subsurface interval. The method also includes analyzing the surface drilling values and identifying on-bottom surface drilling values and on-bottom mechanical specific energy (MSE) values. The method also includes identifying a first changepoint in the on-bottom surface drilling values. The method also includes identifying a second changepoint in the on-bottom MSE values. The method also includes determining a cause of a lost circulation event in the subsurface interval based upon the first and second changepoints.

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