ROTARY STEERABLE DRILLING SYSTEM AND METHOD WITH IMBALANCED FORCE CONTROL

    公开(公告)号:WO2018129241A1

    公开(公告)日:2018-07-12

    申请号:PCT/US2018/012471

    申请日:2018-01-05

    Abstract: A drilling system includes a rotatable string for connecting with a bit for drilling a borehole, and an active stabilizer which includes a body having an outer surface for contacting a wall of the borehole, and a plurality of actuators connecting the body and the string and capable of driving the string to deviate away from a center of the borehole with a displacement to change a drilling direction. The drilling system further includes a module for measuring direction parameters including at least one of a declination angle and an azimuth angle of the borehole, a module for measuring imbalance parameters including at least one of a lateral force, a bending moment and a torque near the drill dit, and a controller including a calculator for calculating an adjustment needed for the displacement, based on the measured parameters and expected values of these parameters.

    APPARATUS AND METHOD FOR INSPECTING OF A MULTI-BARRIER WELLBORE

    公开(公告)号:WO2019046862A2

    公开(公告)日:2019-03-07

    申请号:PCT/US2018/051192

    申请日:2018-09-14

    Abstract: An apparatus for inspecting integrity- of a multi-barrier wellbore is described. The apparatus includes at least one source to generate radiation to impinge a target volume of the wellbore. The apparatus includes a source collimator having a plurality of alternating blocking channels and passing channels to direct radiation to impinge the target volume, such that the radiation directed from each passing channel forms a plurality of field of views extending radially into the target volume. The apparatus further includes at least one detector to receive backscatter rays arising from each respective field of view from the plurality of field of views and to generate an image representative of an inspected portion of the wellbore. The apparatus is useful for inspecting very small volumes in the multiple barriers of the wellbore and determine the integrity of the wellbore based on the different densities in the image of the inspected portion.

    SURFACE-BASED SEPARATION ASSEMBLY FOR USE IN SEPARATING FLUID

    公开(公告)号:WO2018212935A1

    公开(公告)日:2018-11-22

    申请号:PCT/US2018/028866

    申请日:2018-04-23

    Abstract: A surface-based separation assembly for use in separating fluid. The surface-based separation assembly includes a gas-liquid separator configured to receive a fluid stream, and configured to separate the fluid stream into a gas stream and a mixed stream of at least two liquids. A liquid-liquid separator is in flow communication with the gas-liquid separator. The liquid-liquid separator is configured to receive the mixed stream from the gas-liquid separator, and is configured to separate the mixed stream into a first liquid stream and a second liquid stream. The assembly further includes a rotatable shaft including a first portion extending through the gas-liquid separator, and a second portion extending through the liquid-liquid separator. The rotatable shaft is configured to induce actuation of the gas-liquid separator and the liquid-liquid separator.

    AUTO-ADJUSTTABLE DIRECTIONAL DRILLING APPARATUS AND METHOD

    公开(公告)号:WO2018132681A1

    公开(公告)日:2018-07-19

    申请号:PCT/US2018/013530

    申请日:2018-01-12

    Abstract: An auto-adjustable directional drilling apparatus comprises: a drive-shaft housing; a drill collar coupled to the drive-shaft housing; a drive shaft passing through the dnve-shaft housing and the drill collar; an active stabilizer fixed to the drive-shaft housing and movably coupled to the drill collar; a sliding assembly comprising a base support fixed to the drill collar and a sliding base coupled to the drive-shaft housing, wherein the base support defines a slide way and the sliding base is slidably disposed in the slide way; and an actuating module coupled to the sliding base to drive the sliding base to slide along the slide way. An auto-adjustable directional drilling method is also disclosed.

    SENSING SUB-ASSEMBLY FOR USE WITH A DRILLING ASSEMBLY
    6.
    发明申请
    SENSING SUB-ASSEMBLY FOR USE WITH A DRILLING ASSEMBLY 审中-公开
    用于钻井组件的感测分组件

    公开(公告)号:WO2018058017A1

    公开(公告)日:2018-03-29

    申请号:PCT/US2017/053188

    申请日:2017-09-25

    Abstract: A sensing system that includes a cylindrical body including an internal flow channel that channels a first fluid therethrough, and a sampling chamber. The sampling chamber is in flow communication with an ambient environment. A venturi device is coupled within the cylindrical body, and the venturi device includes a high pressure portion and a low pressure portion. The low pressure portion is in flow communication with the sampling chamber. A valve is coupled within the cylindrical body and is positionable in at least a first position. A first flow channel is defined between the internal flow channel and the high pressure portion through the valve. The first flow channel channels the first fluid towards the high pressure portion such that the low pressure portion draws a second fluid into the sampling chamber from the ambient environment. A sensor assembly determines characteristics of the second fluid within the sampling chamber.

    Abstract translation: 感测系统包括圆柱形本体和采样室,所述圆柱形本体包括引导第一流体通过其中的内部流动通道。 采样室与周围环境流体连通。 文氏管装置联接在圆柱形本体内,并且文氏管装置包括高压部分和低压部分。 低压部分与采样室流动连通。 阀连接在圆柱形本体内并且可定位在至少第一位置。 第一流动通道通过阀限定在内部流动通道和高压部分之间。 第一流动通道朝向高压部分引导第一流体,使得低压部分从周围环境将第二流体抽入采样室。 传感器组件确定采样室内第二种流体的特性。

    HYBRID ROTARY STEERABLE SYSTEM AND METHOD
    7.
    发明申请

    公开(公告)号:WO2018160464A1

    公开(公告)日:2018-09-07

    申请号:PCT/US2018/019508

    申请日:2018-02-23

    Abstract: A rotary steerable drilling system includes a collar, a drill bit, and a bit shaft connecting the drill bit to the collar. The bit shaft is coupled to the collar through a joint capable of transmitting a torque from the collar to the bit shaft and is swingable with respect to the collar around the joint. The system, further includes first eccentric wheel and second eccentric wheel coupled to the bit shaft and rotatable to swing the bit shaft with respect to the collar around the joint to change a drilling direction, a controller for controlling the first eccentric wheel and second eccentric wheel to harmoniously rotate such that the swing of the bit shaft substantially compensates rotation of the bit shaft, and an active stabilizer mounted on the bit shaft and capable of pushing the bit shaft to deviate to cause a lateral displacement and a tilt angle of the drill bit.

    ROTARY STEERABLE DRILLING SYSTEM WITH ACTIVE STABILIZER

    公开(公告)号:WO2018129252A1

    公开(公告)日:2018-07-12

    申请号:PCT/US2018/012484

    申请日:2018-01-05

    Abstract: A drilling system includes a drill string for connecting with a drill bit for drilling a borehole, a fixed stabilizer fixed on the drill string, and an active stabilizer including a body and actuators connecting the body and the drill string. The actuators are capable of driving the drill string away from a center of the borehole with a displacement. The body has an outer surface for contacting a wall of the borehole, an inner surface facing the drill string, and at least one guiding portion projecting from the inner surface and each defining at least one groove. The drill string includes at least one sliding portion slidable within the at least one groove respectively to constrain movement between the drill string and the active stabilizer along an axial direction of the drill string and guide movement between the drill string and the active stabilizer perpendicular to the axial direction.

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