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    THREE-WAY FLOW SUB FOR CONTINUOUS CIRCULATION
    1.
    发明申请
    THREE-WAY FLOW SUB FOR CONTINUOUS CIRCULATION 审中-公开
    三路连续循环流程

    公开(公告)号：WO2013043911A3

    公开(公告)日：2014-04-10

    申请号：PCT/US2012056400

    申请日：2012-09-20

    Applicant: WEATHERFORD LAMB

    Inventor： BANSAL RAM K ,  NOSKE JOE ,  MIHALJ MIROSLAV ,  MENARD BILL ,  BAILEY THOMAS F ,  PAVEL DAVID ,  BUCHANAN GERALD WES DON ,  GEORGE GEOFF ,  VIERAITIS DAVID

    IPC: E21B21/10

    CPC classification number: E21B21/08 ,  E21B10/00 ,  E21B21/10 ,  E21B34/12 ,  E21B47/00

    Abstract: A flow sub (100) for use with a drill string includes: a tubular housing (105) having a longitudinal bore formed therethrough and a flow port formed through a wall thereof; a bore valve (110) operable between an open position and a closed position, wherein the bore valve allows free passage through the bore in the open position and isolates an upper portion of the bore from a lower portion of the bore in the closed position; and a sleeve (121) disposed in the housing and movable between an open position where the flow port is exposed to the bore and a closed position where a wall of the sleeve is disposed between the flow port and the bore; and a bore valve actuator operably coupling the sleeve and the bore valve such that opening the sleeve closes the bore valve and closing the sleeve opens the bore valve.

    Abstract translation: 一种用于钻柱的流动副（100）包括：具有穿过其形成的纵向孔的管状壳体（105）和通过其壁形成的流动口; 孔可在打开位置和关闭位置之间操作，其中所述孔阀允许在所述打开位置自由地通过所述孔，并将所述孔的上部与所述孔的下部隔离在所述关闭位置; 以及套筒（121），其设置在所述壳体中并且可在所述流动端口暴露于所述孔的打开位置和所述套筒的壁之间设置在所述流动端口和所述孔之间的关闭位置之间移动; 以及可操作地联接套筒和孔阀的孔阀致动器，使得打开套筒关闭孔阀并关闭套筒打开孔阀。

    DUAL GRADIENT MANAGED PRESSURE DRILLING
    2.
    发明申请
    DUAL GRADIENT MANAGED PRESSURE DRILLING 审中-公开
    双级管理压力钻井

    公开(公告)号：WO2013116381A3

    公开(公告)日：2014-05-01

    申请号：PCT/US2013023916

    申请日：2013-01-30

    Applicant: WEATHERFORD LAMB

    Inventor： FEASEY GUY F ,  PAVEL DAVID ,  MITCHELL MARK A

    IPC: E21B21/08

    CPC classification number: E21B21/08 ,  E21B7/12 ,  E21B21/001

    Abstract: A method of drilling a subsea wellbore includes drilling the wellbore by injecting drilling fluid through a tubular string extending into the wellbore from an offshore drilling unit (ODU) and rotating a drill bit disposed on a bottom of the tubular string. The method further includes, while drilling the wellbore: mixing lifting fluid with drilling returns at a flow rate proportionate to a flow rate of the drilling fluid, thereby forming a return mixture. The lifting fluid has a density substantially less than a density of the drilling fluid. The return mixture has a density substantially less than the drilling fluid density. The method further includes, while drilling the wellbore: measuring a flow rate of the returns or the return mixture; and comparing the measured flow rate to the drilling fluid flow rate to ensure control of a formation being drilled.

    Abstract translation: 钻井海底钻井的方法包括通过从钻井单元（ODU）延伸到井筒中的管柱注入钻井液并旋转设置在管柱的底部上的钻头来钻井孔。 该方法还包括：在钻井井的同时：将提升液与钻井液混合，流量与钻井液的流量成比例，从而形成回流混合物。 提升流体的密度显着小于钻井液的密度。 回流混合物的密度显着小于钻井液密度。 该方法还包括在钻井井时：测量回油或回流混合物的流速; 并将测量的流量与钻井液流量进行比较，以确保正在钻取的地层的控制。

    THREE-WAY FLOW SUB FOR CONTINUOUS CIRCULATION
    4.
    发明专利
    THREE-WAY FLOW SUB FOR CONTINUOUS CIRCULATION 未知

    公开(公告)号：CA2848409C

    公开(公告)日：2019-11-05

    申请号：CA2848409

    申请日：2012-09-20

    Applicant: WEATHERFORD/LAMB INC

    Inventor： BANSAL RAM K ,  NOSKE JOE ,  MIHALJ MIROSLAV ,  MENARD BILL ,  BAILEY THOMAS F ,  PAVEL DAVID ,  BUCHANAN GERALD WES DON ,  GEORGE GEOFF ,  VIERAITIS DAVID

    IPC: E21B17/18

    Abstract: A flow sub for use with a drill string includes: a tubular housing having a longitudinal bore formed therethrough and a flow port formed through a wall thereof; a bore valve operable between an open position and a closed position, wherein the bore valve allows free passage through the bore in the open position and isolates an upper portion of the bore from a lower portion of the bore in the closed position; and a sleeve disposed in the housing and movable between an open position where the flow port is exposed to the bore and a closed position where a wall of the sleeve is disposed between the flow port and the bore; and a bore valve actuator operably coupling the sleeve and the bore valve such that opening the sleeve closes the bore valve and closing the sleeve opens the bore valve.

    ROTATING CONTINUOUS FLOW SUB
    5.
    发明专利
    ROTATING CONTINUOUS FLOW SUB 未知

    公开(公告)号：CA2784593C

    公开(公告)日：2015-04-14

    申请号：CA2784593

    申请日：2011-01-05

    Applicant: WEATHERFORD LAMB

    Inventor： BAILEY THOMAS F ,  MITCHELL MARK ,  PAVEL DAVID ,  RING LEV ,  BANSAL RAM K ,  IBLINGS DAVID

    IPC: E21B21/10 ,  E21B19/16 ,  E21B21/12

    Abstract: A method for drilling a wellbore includes drilling the wellbore by advancing the tubular string longitudinally into the wellbore; stopping drilling by holding the tubular string longitudinally stationary; adding a tubular joint or stand of joints to the tubular string while injecting drilling fluid into a side port of the tubular string, rotating the tubular string, and holding the tubular string longitudinally stationary; and resuming drilling of the wellbore after adding the joint or stand.

    DDV with device for preventing damage from falling objects
    8.
    发明专利
    DDV with device for preventing damage from falling objects 未知

    公开(公告)号：GB2427422A

    公开(公告)日：2006-12-27

    申请号：GB0612016

    申请日：2006-06-16

    Applicant: WEATHERFORD LAMB

    Inventor： NOSKE JOE ,  BRUNNERT DAVID ,  PAVEL DAVID ,  BANSAL R K ,  HAUGEN DAVID ,  LUKE MIKE A

    IPC: E21B41/00 ,  E21B34/00 ,  E21B34/06 ,  E21B34/14

    Abstract: A downhole deployment valve (DDV) 1100 includes a fail safe feature comprising selectively extendable attenuation members 1108, 1109 for decreasing a falling object's impact velocity prior to the object contacting the valve 1112. The DDV 1100 may include a locking member for locking the valve member 1112 in a closed position. Also disclosed is a normally open back-up valve member for actuation upon of a primary valve member and a locking member to lock a valve member closed and enable disposal of a shock attenuating material on the valve member. Actuation of the DDV system can be electrically operated and can be self contained to operate automatically downhole without requiring control lines to the surface. Additionally the actuation of the DDV can be based on a pressure supplied to an annulus.

    Método de perfuração de um furo do poço submarino
    10.
    发明专利
    Método de perfuração de um furo do poço submarino 未知

    公开(公告)号：BR112014018184B1

    公开(公告)日：2022-03-22

    申请号：BR112014018184

    申请日：2013-01-30

    Applicant: WEATHERFORD TECH HOLDINGS LLC ,  WEATHERFORD/LAMB INC

    Inventor： PAVEL DAVID ,  GUY F FEASEY ,  MARK A MITCHELL

    IPC: E21B21/08

    Abstract: método de perfuração de um furo do poço submarino. a presente invenção refere-se a um método de perfuração de um furo do poço submarino que inclui perfurar o furo do poço injetando fluido de perfuração através de uma coluna tubular estendida para dentro do furo do poço a partir de uma unidade de perfuração marítima (odu) e girar uma broca disposta no fundo da coluna tubular. o método ainda inclui, enquanto perfurando o furo do poço: misturar o fluido de içamento com os retornos de perfuração em uma taxa de fluxo proporcional à taxa de fluxo do fluido de perfuração, por meio disso formando uma mistura de retorno. o fluido de içamento tem uma densidade substancialmente menor do que a densidade do fluido de perfuração. a mistura de retorno tem uma densidade substancialmente menor do que a densidade do fluido de perfuração. o método ainda inclui, enquanto perfurando o furo do poço: medir a taxa de fluxo dos retornos ou da mistura de retorno e comparar a taxa de fluxo medida com a taxa de fluxo do fluido de perfuração para garantir o controle de uma formação sendo perfurada.

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