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公开(公告)号：US11566475B2
公开(公告)日：2023-01-31
申请号：US17258512
申请日：2019-07-05
摘要： A drill bit includes a bit body with high and low fluid pressure bodies. The low-pressure bit body includes a fixed cutting structure, and the high-pressure bit body includes at least one high-pressure fluid channel and nozzle capable of withstanding fluid pressures greater than 40 kpsi (276 MPa). A bottomhole assembly includes a drill bit with a bit body having fixed cutter and fluid jetting portions. Low and high-pressure channels in the bit body exit in the fixed cutter and fluid jetting portions. A high-pressure nozzle is coupled to the fluid jetting portion and the high-pressure fluid channel, and a plurality of fixed cutting elements are coupled to the fixed cutter portion. A pressure intensifier is coupled to the drill bit and is configured to increase a pressure of a fluid supplied to the high-pressure fluid channel in the bit body.
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公开(公告)号：US20210277721A1
公开(公告)日：2021-09-09
申请号：US17258512
申请日：2019-07-05
摘要： A drill bit includes a bit body with high and low fluid pressure bodies. The low-pressure bit body includes a fixed cutting structure, and the high-pressure bit body includes at least one high-pressure fluid channel and nozzle capable of withstanding fluid pressures greater than 40 kpsi (276 MPa). A bottomhole assembly includes a drill bit with a bit body having fixed cutter and fluid jetting portions. Low and high-pressure channels in the bit body exit in the fixed cutter and fluid jetting portions. A high-pressure nozzle is coupled to the fluid jetting portion and the high-pressure fluid channel, and a plurality of fixed cutting elements are coupled to the fixed cutter portion. A pressure intensifier is coupled to the drill bit and is configured to increase a pressure of a fluid supplied to the high-pressure fluid channel in the bit body.
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公开(公告)号：US11512536B2
公开(公告)日：2022-11-29
申请号：US17250079
申请日：2019-05-20
发明人： Gary R. Portwood , Luca Tedeschi , Alessandro Bertini , Simone Pallesi , Johann Obermair , James Layne Larsen , Alessio Cechi
摘要： A cutting bit includes a bit body and high-pressure body with a high-pressure fluid conduit therethrough. The high-pressure body and bit body are joined together. The high-pressure fluid conduit is configured to convey a fluid at greater than 14.5 ksi, and in some embodiments greater than 40 ksi. The high-pressure fluid conduit may direct the fluid through a nozzle in a fluid jet to weaken material, such as an earth formation. The cutting bit includes at least one roller cone and/or blades with cutting elements thereon to remove the weakened material. A cutting bit includes both high and low-pressure fluid conduits, and high and low-pressure fluid nozzles. The high-pressure nozzles receive fluid flow from a downhole pressure intensifier, and a connection between the bit and the downhole pressure intensifier includes rigid connectors, flexible connectors, or a combination thereof.
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公开(公告)号：US20210140245A1
公开(公告)日：2021-05-13
申请号：US17250079
申请日：2019-05-20
发明人： Gary R. Portwood , Luca Tedeschi , Alessandro Bertini , Simone Pallesi , Johann Obermair , James Layne Larsen , Alessio Cechi
IPC分类号： E21B10/18
摘要： A cutting bit includes a bit body and high-pressure body with a high-pressure fluid conduit therethrough. The high-pressure body and bit body are joined together. The high-pressure fluid conduit is configured to convey a fluid at greater than 14.5 ksi, and in some embodiments greater than 40 ksi. The high-pressure fluid conduit may direct the fluid through a nozzle in a fluid jet to weaken material, such as an earth formation. The cutting bit includes at least one roller cone and/or blades with cutting elements thereon to remove the weakened material. A cutting bit includes both high and low-pressure fluid conduits, and high and low-pressure fluid nozzles. The high-pressure nozzles receive fluid flow from a downhole pressure intensifier, and a connection between the bit and the downhole pressure intensifier includes rigid connectors, flexible connectors, or a combination thereof.
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公开(公告)号：US20160145945A1
公开(公告)日：2016-05-26
申请号：US14944265
申请日：2015-11-18
发明人： Gary R. Portwood , Cary A. Roth , Luca Tedeschi
IPC分类号： E21B10/08
摘要： A low collision damage bit may include one or more roller cones including a first material and a second material. The bit may have a bit axis and a bit body, and the second material of the one or more roller cones may be positioned farther from the bit axis than the bit body. The second material may have a hardness or yield strength less than the first material.
摘要翻译： 低碰撞损坏钻头可以包括一个或多个包括第一材料和第二材料的滚子锥体。 该钻头可以具有位轴和钻头本体，并且一个或多个滚子锥体的第二材料可以被定位成比钻头体更靠近钻头轴线。 第二材料可以具有比第一材料小的硬度或屈服强度。
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