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    System and method for detecting downhole events
    1.
    发明授权
    System and method for detecting downhole events 有权

    公开(公告)号：US12209494B2

    公开(公告)日：2025-01-28

    申请号：US16295291

    申请日：2019-03-07

    Applicant: ConocoPhillips Company

    Inventor： Yang Zha

    IPC: E21B49/00 ,  G06N3/04

    Abstract: A method is provided to determine and mitigate one or more downhole events of a drill string in a wellbore. The method includes receiving, via a processor, drilling data from one or more surface sensors. The drilling data is processed into a plurality of segments. Each of the plurality of segments are processed by a pre-trained model such that one or more labels are determined. The one or more labels are relating to one or more downhole events corresponding to each of the plurality of segments.

    BEHIND CASING WASH AND CEMENT
    3.
    发明申请
    BEHIND CASING WASH AND CEMENT 有权

    公开(公告)号：US20250027380A1

    公开(公告)日：2025-01-23

    申请号：US18906430

    申请日：2024-10-04

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Lars HOVDA ,  Dan MUELLER ,  James C. STEVENS ,  Amal PHADKE ,  Praveen GONUGUNTLA

    IPC: E21B33/14 ,  E21B33/13 ,  E21B37/00 ,  E21B41/00

    Abstract: Perf-Wash-Cement (“P/W/C”) abandonment are conducted in an offshore oil or gas well annulus, in particular the washing or cementing operation uses a rotating head with nozzles dispensing wash fluid or cement at pressure. A new design of bottom hole assembly is proposed in which the cementing tool has a relatively large diameter in order to optimize pressure whilst the wash tool has a relatively small diameter. The wash process, for a number of reasons, appears to be less sensitive to tool diameter and making the wash tool smaller reduces the overall risk of stuck pipe.

    SETTING A CEMENT PLUG
    6.
    发明申请
    SETTING A CEMENT PLUG 有权

    公开(公告)号：US20250012168A1

    公开(公告)日：2025-01-09

    申请号：US18888568

    申请日：2024-09-18

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Lars HOVDA ,  Dan MUELLER ,  James C. STEVENS ,  Amal PHADKE

    IPC: E21B33/14 ,  E21B33/13 ,  E21B37/00 ,  E21B41/00

    Abstract: A cementing tool (1) and method for setting a cement plug where Instead of the conventional “balanced plug”, the technique involves pumping cement whilst pulling and rotating the tool. The cementing tool (1) includes nozzles (9) for jetting cement which are located in a relatively narrow region (8) of the tool and a larger diameter choke region (5) proximal of the nozzles (9). The end of the tool (11) is closed off and tapered. The tool is passed down the well to a location where it is desired to set a plug, then cement is injected whilst rotating and withdrawing the tool. The jets of cement help displace existing fluid in the well thereby reducing mixing of the existing fluid with the cement, The choke region (5) increases the flow energy, whilst the tapered end (11) helps prevent disruption to the cement as the tool is withdrawn. The choke region (5) may be expandable to allow the tool to pass through a cased part of the well and then set a plug in an under-reamed open hole part of the well.

    PROPPANT FLOWBACK MITIGATION
    7.
    发明申请
    PROPPANT FLOWBACK MITIGATION 有权

    公开(公告)号：US20240426202A1

    公开(公告)日：2024-12-26

    申请号：US18732724

    申请日：2024-06-04

    Applicant: ConocoPhillips Company

    Inventor： Vibhas PANDEY

    IPC: E21B43/267 ,  E21B47/06

    Abstract: Proppant flowback during post-stimulation well clean up and production is a common occurrence in most hydraulically fractured wells. The production of the proppant from a propped fracture is related to the forces acting on the proppant pack during the well that is actively producing fluids. Flow rate and pressure data collected during the post-treatment flowback activity is used in simulating bottomhole (BH) production rates using a Gaussian solution scheme. The BH rate is distributed amongst the various perforation clusters while incorporating the effects of key hydraulic fracture characteristics in the presence of simulated effective bottomhole flowing pressures across different fluid entry points into the wellbore. The solution is updated at each time step during the simulation. The production allocation is then used in calculating effective flow velocities that are then compared with critical velocities to predict proppant flowback. Steps to mitigate or reduce the flowback are implemented.

    METHOD AND APPARATUS FOR MILLING A WINDOW IN CASING
    10.
    发明公开
    METHOD AND APPARATUS FOR MILLING A WINDOW IN CASING 审中-公开

    公开(公告)号：US20240352819A1

    公开(公告)日：2024-10-24

    申请号：US18650829

    申请日：2024-04-30

    Applicant: CONOCOPHILLIPS COMPANY

    Inventor： Kenneth MARIBU ,  John Gary Eller ,  Anthony Ryan

    IPC: E21B29/06 ,  E21B29/04 ,  E21B29/12

    CPC classification number: E21B29/06 ,  E21B29/04 ,  E21B29/12

    Abstract: A process is described for milling a window in the casing (2) of an oil or gas producing well, for example in order to drill a lateral well branching off from the main well. A wireline milling tool is first used, in a relatively low cost operation, to create a small window (14) or notch in the casing (2). Provided a small window (14) or notch can be created successfully, an expensive heavy duty coil tubing milling operation can then be conducted to create the full window, some 4-6 feet in length. Previous attempts to create a full window using wireline tools have encountered difficulties due to there being no circulating drilling fluid to remove metal swarf and due to the need for the tool to be supported by casing during the milling operation, when the integrity of the casing is being compromised by drilling the window. The proposed wireline tool has an actuator (4) with relatively small stroke length and a relatively small container (8) to manage the swarf produced by the milling process.

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