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    Iron Roughnecks for Non-Stop Circulation System
    3.
    发明申请
    Iron Roughnecks for Non-Stop Circulation System 审中-公开

    公开(公告)号：US20200056433A1

    公开(公告)日：2020-02-20

    申请号：US16478844

    申请日：2018-01-18

    Applicant: Schlumberger Technology Corporation

    Inventor： Zaurayze Tarique ,  Blaine Dow ,  Justin Cremer

    IPC: E21B19/16 ,  E21B21/10

    Abstract: An iron roughneck for constant circulation of drilling mud during operation of a drill string, the iron roughneck comprising: a frame; a wrench unit supported by the frame, wherein the wrench unit is capable of gripping a drill string; a spinner unit supported by the frame, wherein the spinner unit is capable of engaging and spinning a drill pipe; and a circulation coupler supported by the frame, wherein the circulation coupler forms a chamber around the drill string.

    Non-stop circulation system for maintaining bottom hole pressure
    4.
    发明授权
    Non-stop circulation system for maintaining bottom hole pressure 有权

    公开(公告)号：US11365594B2

    公开(公告)日：2022-06-21

    申请号：US16478842

    申请日：2018-01-18

    Applicant: Schlumberger Technology Corporation

    Inventor： Blaine Dow ,  Zaurayze Tarique ,  Scott Coffey ,  Justin Cremer

    IPC: E21B21/08 ,  E21B17/18 ,  E21B17/10 ,  E21B19/16 ,  E21B21/10 ,  E21B33/035

    Abstract: A method for maintaining a constant bottom hole pressure during wellbore drilling operations, the method comprising supplying drilling fluid to the drill string via a top drive at a first pressure while flow of drilling fluid out of a wellbore annulus is restricted by a choke to hold pressure in a wellbore annulus and supplying drilling fluid to the drill string via the top drive at a second pressure lower than the first pressure and to a circulation coupler at a third pressure while flow of drilling fluid out of a wellbore annulus is restricted by a choke to hold pressure in the annulus, wherein the sum of the second and third pressures is approximately the same as the first pressure. The method also comprises supplying drilling fluid to the drill string via the circulation coupler at the third pressure while pumping drilling fluid into the wellbore annulus by a back pressure pump, wherein the bottom hole pressure at the bottom of the wellbore is maintained substantially constant during all steps of supplying drilling fluid to the drill string.

    Proportional control of rig drilling mud flow
    5.
    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.

    Non-Stop Circulation System for Maintaining Bottom Hole Pressure
    6.
    发明申请
    Non-Stop Circulation System for Maintaining Bottom Hole Pressure 审中-公开

    公开(公告)号：US20200056432A1

    公开(公告)日：2020-02-20

    申请号：US16478842

    申请日：2018-01-18

    Applicant: Schlumberger Technology Corporation

    Inventor： Blaine Dow ,  Zaurayze Tarique ,  Scott Coffey ,  Justin Cremer

    IPC: E21B17/18 ,  E21B21/08

    Abstract: A method for maintaining a constant bottom hole pressure during wellbore drilling operations, the method comprising supplying drilling fluid to the drill string via a top drive at a first pressure while flow of drilling fluid out of a wellbore annulus is restricted by a choke to hold pressure in a wellbore annulus and supplying drilling fluid to the drill string via the top drive at a second pressure lower than the first pressure and to a circulation coupler at a third pressure while flow of drilling fluid out of a wellbore annulus is restricted by a choke to hold pressure in the annulus, wherein the sum of the second and third pressures is approximately the same as the first pressure. The method also comprises supplying drilling fluid to the drill string via the circulation coupler at the third pressure while pumping drilling fluid into the wellbore annulus by a back pressure pump, wherein the bottom hole pressure at the bottom of the wellbore is maintained substantially constant during all steps of supplying drilling fluid to the drill string.

    AUTOMATIC AND INTEGRATED CONTROL OF BOTTOM-HOLE PRESSURE
    7.
    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
    9.
    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.

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