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    Equalizer valve with opposed seals biased toward closed from rising pressure on either of opposed sides
    81.
    发明授权
    Equalizer valve with opposed seals biased toward closed from rising pressure on either of opposed sides 有权

    公开(公告)号：US09896907B2

    公开(公告)日：2018-02-20

    申请号：US14922851

    申请日：2015-10-26

    Applicant: BAKER HUGHES INCORPORATED

    Inventor： Samuel C. Kucera

    IPC: E21B34/10 ,  E21B34/14

    CPC classification number: E21B34/101

    Abstract: An equalizer valve is configured to stay shut when pressure on one side or the other goes up. A dynamic seal and a metal to metal seal are located within the housing. Pressure from above is directed uphole of the metal to metal seal and downhole of the larger dynamic seal for a net closing force. Pressure from downhole is directed between the metal to metal and dynamic seals for a net force uphole to keep the metal seal closed. Normal operation is from a control line moving a rod piston to move a valve member to open the metal to metal seal for flow through the valve body.

    Downhole electric motors having angularly displaced rotor sections
    85.
    发明授权
    Downhole electric motors having angularly displaced rotor sections 有权

    公开(公告)号：US09893578B2

    公开(公告)日：2018-02-13

    申请号：US14693249

    申请日：2015-04-22

    Applicant: Baker Hughes Incorporated

    Inventor： James C. Clingman ,  Chad A. Craig

    IPC: H02K1/27 ,  H02K1/28 ,  H02K5/132

    CPC classification number: H02K1/276 ,  H02K5/132 ,  H02K2201/06

    Abstract: Systems and methods for constructing electric motors in which rotor sections are individually keyed to a rotor shaft such that, in a resting position, the rotor sections are circumferentially shifted (“clocked”) with respect to each to mitigate effects of harmonic feedback, torsional flexibility and the like. In one embodiment, a system includes an electric drive, and an ESP coupled to it by a power cable. The ESP motor has a rotor in which multiple permanent-magnet rotor sections are mounted to a shaft. Within each rotor section, permanent magnets are positioned in two or more axially aligned rows. Adjacent rotor sections are clocked with respect to each other so that, in operation, the rows of permanent magnets in the different rotor sections are positioned to counter the harmonic feedback or to use torsional deflection to equalize torque contributions from the different rotor sections.

    Methods of forming polycrystalline compacts
    86.
    发明授权
    Methods of forming polycrystalline compacts 有权

    公开(公告)号：US09889542B2

    公开(公告)日：2018-02-13

    申请号：US15379878

    申请日：2016-12-15

    Applicant: Baker Hughes Incorporated

    Inventor： Danny E. Scott ,  Anthony A. DiGiovanni

    IPC: B24D18/00 ,  B24D3/14 ,  B24D99/00 ,  B01J3/06 ,  B24D3/06 ,  E21B10/55

    CPC classification number: B24D18/0009 ,  B01J3/06 ,  B01J2203/062 ,  B01J2203/0645 ,  B24D3/06 ,  B24D3/14 ,  B24D99/005 ,  E21B10/55

    Abstract: Methods for forming cutting elements, methods for forming polycrystalline compacts, and related polycrystalline compacts are disclosed. Grains of a hard material are subjected to a high-pressure, high-temperature process to form a polycrystalline compact. Inclusion of at least one relatively quick spike in system pressure or temperature during an otherwise plateaued temperature or pressure stage accommodates formation of inter-granular bonds between the grains. The brevity of the peak stage may avoid undesirable grain growth. Embodiments of the methods may also include at least one of oscillating at least one system condition (e.g., pressure, temperature) and subjecting the grains to ultrasonic or mechanical vibrations. A resulting polycrystalline compact may include a high density of inter-granularly bonded hard material with a minimized amount of catalyst material, and may provide improved thermal stability, wear resistance, toughness, and behavior during use of a cutting element incorporating the polycrystalline compact.

    Induction logging sensor
    89.
    发明授权
    Induction logging sensor 有权

    公开(公告)号：US09880307B2

    公开(公告)日：2018-01-30

    申请号：US14522411

    申请日：2014-10-23

    Applicant: Baker Hughes Incorporated

    Inventor： Arcady Reiderman ,  Stanislav W. Forgang ,  Steven A. Morris ,  Jonathan F. Hook ,  Yi Liu

    IPC: G01V3/10 ,  G01V3/20 ,  G01V3/30 ,  E21B47/022 ,  E21B47/09

    CPC classification number: G01V3/10 ,  E21B47/02216 ,  E21B47/0905 ,  E21B47/102 ,  G01V3/104 ,  G01V3/20 ,  G01V3/30

    Abstract: Apparatuses and methods are provided herein that may improve sensitivity to transient signals. For example, an electromagnetic sensor for downhole measurements that includes a plurality of sectors (e.g., four quadrants) is provided herein. Each quadrant may include a magnetic core formed of a material with a high initial magnetic permeability to improve sensitivity to transient signals. A sensor for continuous wave induction tools is also provided, and may include a magnetic core formed of a material with a high initial magnetic permeability. Forming each sector magnetic core of a material with a high mechanical reliability may allow the magnetic core of the corresponding sensor to be pliable and flexible and not brittle and prone to breaking. Furthermore, the corresponding sensor may have enhanced sensitivity, greater stability of sensitivity relative to temperature changes, and high mechanical reliability.

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