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    AUTOMATIC AND INTEGRATED CONTROL OF BOTTOM-HOLE PRESSURE
    1.
    发明申请
    AUTOMATIC AND INTEGRATED CONTROL OF BOTTOM-HOLE PRESSURE 审中-公开
    自动和综合控制底孔压力

    公开(公告)号：US20170037690A1

    公开(公告)日：2017-02-09

    申请号：US14820319

    申请日：2015-08-06

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Jesse Hardt ,  Zaurayze Tarique ,  Yawan Couturier ,  Blaine Dow

    IPC: E21B21/08

    CPC classification number: E21B21/08

    Abstract: A method for responding to an adverse fluid event such as a fluid gain or fluid loss event includes pumping a drilling fluid through a drilling system having a drill string and into a well bore. The drilling system also includes at least two pressure control components operatively coupled to the drill string. The bottom hole pressure of the well bore may be monitored. Once a fluid loss condition or a fluid gain condition is detected, a response for each of the at least two pressure control components to the fluid loss or fluid gain condition is determined. The responses for the at least two pressure control components are prioritized, and at least one of the pressure control components are adjusted to mitigate the adverse pressure condition.

    Abstract translation: 用于响应不利流体事件（例如流体增益或流体损失事件）的方法包括将钻井流体泵送穿过具有钻柱的钻井系统并进入井眼。 钻井系统还包括至少两个可操作地联接到钻柱的压力控制部件。 可以监测井眼的井底压力。 一旦检测到流体损失状况或流体增益状况，则确定至少两个压力控制部件中的每一个对流体损失或流体增益条件的响应。 对至少两个压力控制部件的响应被优先考虑，并且调节至少一个压力控制部件以减轻不利压力状况。

    Proportional control of rig drilling mud flow
    3.
    发明授权
    Proportional control of rig drilling mud flow 有权

    公开(公告)号：US10683715B2

    公开(公告)日：2020-06-16

    申请号：US15753547

    申请日：2016-08-29

    Applicant: Schlumberger Technology Corporation

    Inventor： Yawan Couturier ,  Paul Andrew Thow ,  Blaine Dow ,  Jesse Alan Hardt

    IPC: E21B21/08 ,  F04D7/02 ,  F04D15/00 ,  E21B21/10 ,  E21B47/06 ,  F04D13/10 ,  E21B21/06 ,  E21B21/00

    Abstract: A system includes a mud pump for pumping a drilling mud from a drilling mud source, through a drill string, out a drill bit and into an annular, and a plurality of chokes disposed down stream from the mud pump, including a first choke disposed between the mud pump and the drill string, and a second choke disposed between the mud pump and a mud tank. The system further includes a fluid discharge conduit in fluid communication with the annular space for transferring the drilling mud to handling equipment in fluid communication with the mud tank. The first choke receives the drilling mud from the mud pump at a first flow rate, the first choke reduces drilling mud flow rate to a second flow rate less than the first flow rate, and the second choke reduces drilling mud flow rate to a third flow rate.

    Fluid loss and gain for flow, managed pressure and underbalanced drilling
    4.
    发明授权
    Fluid loss and gain for flow, managed pressure and underbalanced drilling 有权

    公开(公告)号：US10718172B2

    公开(公告)日：2020-07-21

    申请号：US15737306

    申请日：2016-06-27

    Applicant: Schlumberger Technology Corporation

    Inventor： Paul Andrew Thow ,  Yawan Couturier

    IPC: E21B21/08 ,  E21B21/06 ,  E21B47/06 ,  E21B21/00

    Abstract: A method for monitoring a well bore during drilling operations, particularly with respect to a fluid gain and/or fluid loss event. Monitoring the well bore may be accomplished by monitoring an incoming flow rate of the fluid into the wellbore. The fluid return line from the well bore may carry drilling fluid from the well bore to a mud gas separator located downstream from the well bore. Changes in at least one parameter of the mud gas separator may be monitored. The changes to the at least one parameter of a mud gas separator may be compared to the incoming flow rate of the fluid. Discrepancies between the changes and the incoming flow rate may be indicative of a fluid gain or fluid loss condition.

    Proportional Control of Rig Drilling Mud Flow
    6.
    发明申请
    Proportional Control of Rig Drilling Mud Flow 审中-公开

    公开(公告)号：US20180238130A1

    公开(公告)日：2018-08-23

    申请号：US15753547

    申请日：2016-08-29

    Applicant: Schlumberger Technology Corporation

    Inventor： Yawan Couturier ,  Paul Andrew Thow ,  Blaine Dow ,  Jesse Alan Hardt

    IPC: E21B21/08 ,  E21B21/10 ,  E21B47/06

    Abstract: A system includes a mud pump for pumping a drilling mud from a drilling mud source, through a drill string, out a drill bit and into an annular, and a plurality of chokes disposed down stream from the mud pump, including a first choke disposed between the mud pump and the drill string, and a second choke disposed between the mud pump and a mud tank. The system further includes a fluid discharge conduit in fluid communication with the annular space for transferring the drilling mud to handling equipment in fluid communication with the mud tank. The first choke receives the drilling mud from the mud pump at a first flow rate, the first choke reduces drilling mud flow rate to a second flow rate less than the first flow rate, and the second choke reduces drilling mud flow rate to a third flow rate.

    Fluid Loss and Gain for Flow, Managed Pressure and Underbalanced Drilling
    9.
    发明申请
    Fluid Loss and Gain for Flow, Managed Pressure and Underbalanced Drilling 审中-公开

    公开(公告)号：US20180135367A1

    公开(公告)日：2018-05-17

    申请号：US15737306

    申请日：2016-06-27

    Applicant: Schlumberger Technology Corporation

    Inventor： Paul Andrew Thow ,  Yawan Couturier

    IPC: E21B21/08 ,  E21B21/06

    Abstract: A method for monitoring a well bore during drilling operations, particularly with respect to a fluid gain and/or fluid loss event. Monitoring the well bore may be accomplished by monitoring an incoming flow rate of the fluid into the wellbore. The fluid return line from the well bore may carry drilling fluid from the well bore to a mud gas separator located downstream from the well bore. Changes in at least one parameter of the mud gas separator may be monitored. The changes to the at least one parameter of a mud gas separator may be compared to the incoming flow rate of the fluid. Discrepancies between the changes and the incoming flow rate may be indicative of a fluid gain or fluid loss condition.

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