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公开(公告)号：US11085240B2
公开(公告)日：2021-08-10
申请号：US16470491
申请日：2018-11-09
发明人： Hossam Gharib , Steven Graham Bell
摘要： A radial bearing apparatus including a housing with a housing bore defining a radial bearing housing surface, a shaft extending through the housing bore and defining a radial bearing shaft surface, and a radial bearing contact interface between the radial bearing housing surface and the radial bearing shaft surface for bearing a variable side force applied to the shaft. The radial bearing contact interface includes an oblique section in which the radial bearing housing surface and the radial bearing shaft surface are oblique to each other when the side force is zero and progressively increase in contact in an axial direction in response to an increasing magnitude of the side force.
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公开(公告)号：US10472890B2
公开(公告)日：2019-11-12
申请号：US15562109
申请日：2015-05-08
发明人： Hossam Gharib , Steven Park
摘要： A drilling apparatus having a drive section and a bearing section axially distal to the drive section. The bearing section includes a unitary bearing housing defining a bearing housing bore, a driveshaft received within the bearing housing bore and rotatable relative to the bearing housing, and a bearing assembly radially interposed between the bearing housing and the driveshaft for rotatably supporting the driveshaft within the bearing housing bore. The unitary bearing housing may be connected directly with a transmission housing. An axis intersection point between a primary axis of the drilling apparatus and the driveshaft axis may be axially located between a proximal bearing housing end and a distal bearing housing end. One or more stationary bearing components may be non-rotatably engaged with one or more sleeves which are non-rotatably engaged with the bearing housing.
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公开(公告)号：US10443308B2
公开(公告)日：2019-10-15
申请号：US15576403
申请日：2015-07-02
发明人： Hossam Gharib
摘要： A drilling apparatus having a drive section and a bearing section axially distal to the drive section. The bearing section includes a bearing housing having a bearing housing bore defining a bearing housing bore axis, a sleeve assembly received within the bearing housing bore, the sleeve assembly having a sleeve assembly bore defining a sleeve assembly bore axis, a driveshaft received within the sleeve assembly bore, and a bearing assembly for rotatably supporting the driveshaft within the sleeve assembly bore. The sleeve assembly includes a plurality of axially arranged sleeve sections. The sleeve assembly bore axis is oblique to the bearing housing bore axis. The sleeve sections may be received within the bearing housing bore so that they maintain a fixed angular position relative to each other and relative to the bearing housing, and so that they maintain a fixed axial position relative to the bearing housing.
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公开(公告)号：US11639634B2
公开(公告)日：2023-05-02
申请号：US17367968
申请日：2021-07-06
发明人： Hossam Gharib , Steven Graham Bell
摘要： A radial bearing apparatus including a housing with a housing bore defining a radial bearing housing surface, a shaft extending through the housing bore and defining a radial bearing shaft surface, and a radial bearing contact interface between the radial bearing housing surface and the radial bearing shaft surface for bearing a variable side force applied to the shaft. The radial bearing contact interface includes an oblique section in which the radial bearing housing surface and the radial bearing shaft surface are oblique to each other when the side force is zero and progressively increase in contact in an axial direction in response to an increasing magnitude of the side force.
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公开(公告)号：US10961790B2
公开(公告)日：2021-03-30
申请号：US15767968
申请日：2015-11-19
发明人： Hossam Gharib , John Keith Savage
IPC分类号： E21B41/00 , F16L19/065 , E21B4/02 , E21B17/16
摘要： Methods and apparatus are disclosed for retaining components in a downhole motor in the event of a mechanical separation or failure of one or more components therein. As described, the retention mechanism does not require a threaded connection to components of the mud motor drivetrain. Downhole motor assemblies including the new catch mechanism also include a structural element to engage the catch assembly and the components to which it is attached in the event of a mechanical failure within the mud motor assembly.
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公开(公告)号：US20180305988A1
公开(公告)日：2018-10-25
申请号：US15767968
申请日：2015-11-19
发明人： Hossam Gharib , John Keith Savage
CPC分类号： E21B17/16 , E21B4/02 , E21B41/0021
摘要： Methods and apparatus are disclosed for retaining components in a downhole motor in the event of a mechanical separation or failure of one or more components therein. As described, the retention mechanism does not require a threaded connection to components of the mud motor drivetrain. Downhole motor assemblies including the new catch mechanism also include a structural element to engage the catch assembly and the components to which it is attached in the event of a mechanical failure within the mud motor assembly.
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公开(公告)号：US20200181979A1
公开(公告)日：2020-06-11
申请号：US16470491
申请日：2018-11-09
发明人： Hossam Gharib , Steven Graham Bell
摘要： A radial bearing apparatus including a housing with a housing bore defining a radial bearing housing surface, a shaft extending through the housing bore and defining a radial bearing shaft surface, and a radial bearing contact interface between the radial bearing housing surface and the radial bearing shaft surface for bearing a variable side force applied to the shaft. The radial bearing contact interface includes an oblique section in which the radial bearing housing surface and the radial bearing shaft surface are oblique to each other when the side force is zero and progressively increase in contact in an axial direction in response to an increasing magnitude of the side force.
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公开(公告)号：US10053918B2
公开(公告)日：2018-08-21
申请号：US15126885
申请日：2015-11-19
发明人： Hamid SadAbadi , Hossam Gharib
CPC分类号： E21B12/00 , E21B4/003 , E21B4/02 , E21B41/0021
摘要： Methods and apparatus are disclosed for retaining components in a downhole motor in the event of a mechanical separation or failure of one or more components therein. As described, the retention mechanism does not require a threaded connection to components of the mud motor drivetrain. Downhole motor assemblies including the new catch mechanism also include a structural element to engage the catch assembly and the components to which it is attached in the event of a mechanical failure within the mud motor assembly.
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公开(公告)号：US20170260813A1
公开(公告)日：2017-09-14
申请号：US15126885
申请日：2015-11-19
发明人： Hamid SadAbadi , Hossam Gharib
CPC分类号： E21B12/00 , E21B4/003 , E21B4/02 , E21B41/0021
摘要： Methods and apparatus are disclosed for retaining components in a downhole motor in the event of a mechanical separation or failure of one or more components therein. As described, the retention mechanism does not require a threaded connection to components of the mud motor drivetrain. Downhole motor assemblies including the new catch mechanism also include a structural element to engage the catch assembly and the components to which it is attached in the event of a mechanical failure within the mud motor assembly.
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公开(公告)号：US11448058B2
公开(公告)日：2022-09-20
申请号：US16405434
申请日：2019-05-07
发明人： Hossam Gharib , Julien Marck
IPC分类号： E21B47/007 , E21B47/08 , E21B12/02 , E21B41/00 , E21B21/08 , E21B47/022
摘要： Conventional practice for determining a life expectancy of a drilling tool has been based on simple static bending moment evaluation and/or conservative past experience life limits. This archaic practice has often led to premature scrapping of the tools and has proven to be overly conservative and cost-ineffective. Introduced herein is a BHA condition monitoring technique that combines both field data and advanced models in one system. The introduced technique is based on a combination of system and component level models to monitor and evaluate the current health and life of BHA components. The introduced technique can apply to all directional drilling BHAs, including mud motors and rotary steerable systems, and can be used at different levels of the tool's life cycle to improve efficiency, reduce downhole failure incidents, and maximize assets' utilization.
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