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公开(公告)号：US12084970B2
公开(公告)日：2024-09-10
申请号：US18355593
申请日：2023-07-20
发明人： Michael Dineen
IPC分类号： E21B7/06 , E21B23/04 , E21B25/02 , E21B47/024
CPC分类号： E21B7/061 , E21B7/067 , E21B23/0411 , E21B25/02 , E21B47/024
摘要： In preparation for directional drilling, a wedge supported distally ahead of a tubular drill string is advanced along a parent hole. The wedge is connected to the drill string by a rigid link that extends along a central longitudinal axis through an annular cutting head. The wedge may be connected to the drill string via an inner dropper mechanism that can be engaged by a wireline lifting system. After locking the wedge at a kick-off point in the hole at a desired azimuth, the connection of the link is broken. The dropper mechanism can then be retrieved and replaced by an inner core tube, without moving the drill string. The drill string is then advanced to drill a daughter hole that branches from the parent hole on the azimuth determined by the wedge. Advantageously, there is no need to withdraw the drill string before drilling the daughter hole can commence.
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公开(公告)号：US20240271522A1
公开(公告)日：2024-08-15
申请号：US18566815
申请日：2022-05-31
申请人： Aziwell AS
发明人： Eirik BORG , Bjørn CHRISTIANSEN , Tobias RASMUSSEN
IPC分类号： E21B47/024 , E21B7/06 , E21B44/00
CPC分类号： E21B47/024 , E21B7/062 , E21B7/064 , E21B7/067 , E21B44/005
摘要： The present invention relates to a system for identifying or monitoring the orientation and position of a rotary steerable drill for drilling in bedrock, wherein the system comprising; •a substantially non-rotating outer body element (1) housing at least one reference point magnet (14), and •a rotating drive shaft (3), arranged inside the outer body element (1), that is connected to a drill bit (4) at its first end and to the drill rod (5), and •an inner body element (11) that is arranged inside the drive shaft (3), drill rod (5) or coupling thereof and where the inner body element (11) can be seated and retrieved from surface by means of a wireline. The inner body includes: —a cradle or platform (23) is arranged essentially concentrically inside the inner body element (11) being suspended rotationally free to the inner body element (11) enabling the cradle or platform (23) to freely rotate relative to the inner body element (11). The cradle or platform also includes at least one gravity sensor for at any time measuring the direction of earth's gravity relative to the said cradle or platform (23), and at least one alignment device (19) configured to align said cradle or platform (23) in a known rotational position relative to a reference constituted by the reference point element (14) or the direction of earth's gravity.
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公开(公告)号：US11952894B2
公开(公告)日：2024-04-09
申请号：US17682127
申请日：2022-02-28
发明人： Sylvain Bedouet
CPC分类号： E21B7/064 , E21B7/04 , E21B7/061 , E21B7/067 , E21B21/10 , E21B34/066 , E21B44/005
摘要： A rotary steerable system including a steering section having not more than one piston or not more than two pistons in a transverse cross-sectional plane of the steering section. The steering section includes two distribution flow passages each extending from a valve to a piston. A ratio of a distribution flow passage diameter to steering section diameter is at least 0.07. The distribution flow passages are contained within a central area of the steering section, with a ratio of a central area diameter to steering section diameter being 0.5 or less, preferably 0.4 or less. The steering section may include two pistons having center points that are separated by an angle greater than 120 degrees, preferably about 180 degrees. A duration for which only one of the sets of pistons is activated is greater than 110 degrees of rotation of a valve rotor, preferably greater than 150 degrees.
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4.发明授权公开(公告)号：US11821304B2
公开(公告)日：2023-11-21
申请号：US17161192
申请日：2021-01-28
申请人： U-Target Energy Ltd.
发明人： Xia Pan , Zhenyuan Hu , Fuchun Liu , Silviu Calin , Zhiqun Wang , Jack Wang , Michel Herzig
IPC分类号： E21B47/13 , E21B47/18 , E21B7/06 , E21B17/02 , E21B47/0228 , E21B4/02 , E21B41/00 , E21B17/042 , E21B49/00 , E21B47/017
CPC分类号： E21B47/13 , E21B4/02 , E21B7/067 , E21B17/0285 , E21B17/042 , E21B41/0085 , E21B47/017 , E21B47/0228 , E21B47/18 , E21B49/00
摘要： A complete telemetry system and methods for downhole operations. The telemetry system includes an instrumented near-bit sub located below the Mud Motor and connected to the drill bit as well as a conventional MWD tool located above the mud motor. Parameters such as inclination of the borehole, the natural gamma ray of the formations, the electrical resistivity of the formations, and a range of mechanical drilling performance parameters are measured. Electromagnetic telemetry signals representing these measurements are transmitted uphole to a receiver associated with the conventional MWD tool located above the motor, and transmitted by this tool to the surface via mud pulse signals. The system is particularly useful for accurate control over the drilling of extended reach and horizontally drilled wells.
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公开(公告)号：US20230279728A1
公开(公告)日：2023-09-07
申请号：US18138895
申请日：2023-04-25
摘要： A downhole motor for directional drilling includes a driveshaft assembly including a driveshaft housing and a driveshaft rotatably disposed within the driveshaft housing, a bearing assembly including a bearing housing and a bearing mandrel rotatably disposed within the bearing housing, wherein the bearing mandrel is configured to couple with a drill bit, a bend adjustment assembly configured to adjust a bend setting of the downhole motor, a lock piston including an unlocked position, and a locked position configured to lock the bend setting of the bend adjustment assembly, one or more hydraulic pumps configured to actuate the lock piston into the unlocked position to unlock the bend adjustment assembly, and an electronics package configured to indicate the bend setting of the bend adjustment assembly.
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公开(公告)号：US20230184103A1
公开(公告)日：2023-06-15
申请号：US17643657
申请日：2021-12-10
发明人： Bodong Li , Jianhui Xu , Abrar Alshaikh , Chinthaka P. Gooneratne , Guodong Zhan
CPC分类号： E21B47/138 , E21B7/067 , E21B21/103 , E21B23/00 , E21B34/063
摘要： A downhole sub has a body defined by a wall extending in an axial direction from a first end to a second end. An inner surface of the wall defines a flow path through the downhole sub and an outer surface of the wall defines an outer diameter of the downhole sub. A compartment extends from the outer surface into the wall to having a depth less than a thickness of the wall. A housing may be removably fixed in the compartment. One or more mobile devices may be disposed in the housing. Each of the one or more mobile devices includes a sensor encapsulated in a protective material. A control element may block an opening of the housing, the control element is made of a dissolvable material configured to dissolve at a predetermined depth in a wellbore and release the one or more mobile devices into the wellbore.
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公开(公告)号：US20180363380A1
公开(公告)日：2018-12-20
申请号：US16007545
申请日：2018-06-13
摘要： A bend adjustment assembly for a downhole mud motor includes a driveshaft housing, a driveshaft disposed in the driveshaft housing, a bearing mandrel, wherein the bend adjustment assembly includes a first position that provides a first deflection angle between a longitudinal axis of the driveshaft housing and a longitudinal axis of the bearing mandrel, wherein the bend adjustment assembly includes a second position that provides a second deflection angle between the longitudinal axis of the driveshaft housing and the longitudinal axis of the bearing mandrel, and an actuator assembly configured to shift the bend adjustment assembly between the first position and the second position in response to a change in at least one of flowrate of a drilling fluid supplied to the downhole mud motor, pressure of the drilling fluid supplied to the downhole mud motor, and relative rotation between the driveshaft housing and the bearing mandrel.
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公开(公告)号：US20180320448A1
公开(公告)日：2018-11-08
申请号：US15585747
申请日：2017-05-03
发明人： Gregory L. Hern , Steve Rosenblatt
CPC分类号： E21B7/067 , E21B7/061 , E21B23/01 , E21B29/06 , E21B34/103
摘要： A piston has a hydraulic line going through it and is held in position with one or more shear pins or similar breakable retainers. The piston blocks the flow to the window mill circulation ports until a pressure level is reached that breaks the breakable members to allow the piston to move. The piston moves into a larger bore to allow bypass flow through lateral openings. The piston is captured in the larger diameter chamber after passing the lateral openings. Piston movement pushes out some of the high pressure tubing through the window mill where initial rotation of the window mill along the whipstock face causes the extending tubing to be ground off. A rupture disc and high pressure hoses are no longer needed for a significant cost savings from prior designs.
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公开(公告)号：US20180258702A1
公开(公告)日：2018-09-13
申请号：US15452229
申请日：2017-03-07
发明人： Daniel A. Marson , Liam A. Lines
IPC分类号： E21B7/06 , E21B44/00 , E21B47/024
CPC分类号： E21B7/067 , E21B7/062 , E21B44/005 , E21B47/024
摘要： A drilling assembly disposed on a drillstring deviates a borehole (i.e., changes the trajectory of the borehole) advanced by a drill bit. A housing disposed on the drillstring transfers first rotation to the drill bit, and one or more directors are disposed on the housing to rotate therewith. Each of the directors is independently movable between an extended condition and a retracted condition relative to the housing. An actuator is disposed on the assembly and is operable provide a second rotation relative to the first rotation. An internal component is disposed in the housing and is rotatable by the second rotation of the actuator to have first and second conditions relative to each of the one or more directors rotating with the first rotation of the housing. The internal component in the first condition extends a given one of the one or more directors toward the extended condition. Conversely, the internal component in the second condition allows retraction of a given one of the one or more directors toward the retracted condition.
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公开(公告)号：US20180252042A1
公开(公告)日：2018-09-06
申请号：US15756481
申请日：2015-10-12
发明人： Ravi P. Nanayakkara
CPC分类号： E21B7/068 , E21B4/02 , E21B4/04 , E21B7/067 , E21B41/0085
摘要： In accordance with embodiments of the present disclosure, a hybrid drive for use within a rotary steerable drilling tool is provided. The hybrid drive may enable improved directional drilling performance of the rotary steerable drilling tool. The hybrid drive may include a prime mover for rotating a drilling component (e.g., cam used to counter-rotate a steering head) relative to a fully rotating outer housing of the rotary steerable tool. In addition, the hybrid drive may include an electrical motor/generator for adjusting the rotational speed of the cam in response to high frequency changes in rotational speed of the tool housing. The hybrid drive may also include a transmission coupled to the prime mover and the electrical motor/generator for providing mechanical energy from one or both of the prime mover and the motor/generator to rotate the cam (or other drilling component) within the rotary steerable tool.
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