ELECTROMAGNETIC IMAGER DESIGN
    12.
    发明申请

    公开(公告)号:WO2021091580A1

    公开(公告)日:2021-05-14

    申请号:PCT/US2019/063689

    申请日:2019-11-27

    Abstract: A method for identifying an operating frequency may comprise performing a frequency sweep using one or more injector electrodes disposed on a downhole tool, recording one or more measurements from the frequency sweep, identifying one or more stable frequencies from the frequency sweep, and identifying one or more operating frequencies from the one or more stable frequencies. A system for electrical isolation may comprise a downhole tool, a pad, an arm, wherein the arm is attached to the mounting bracket and the mandrel, and an information handling system connected to the pad through the first set of electronics and the second set of electronics. The downhole tool may comprise a mandrel, a chassis disposed in the mandrel, and a first set of electronics disposed in the chassis.

    PACKAGING OF A DIODE AND SIDAC INTO AN ACTUATOR OR MOTOR FOR DOWNHOLE USAGE

    公开(公告)号:WO2021045768A1

    公开(公告)日:2021-03-11

    申请号:PCT/US2019/049815

    申请日:2019-09-05

    Abstract: An actuation module may comprise a housing, a solenoid operated valve solenoid operated valve disposed in the housing, a diode disposed in the housing, a silicon bilateral voltage triggered switch thyristor disposed in the housing and electrically connected to the solenoid operated valve, and an output connected to the solenoid operated valve. A method may comprise connecting an actuation module to a production tubing valve, connecting the actuation module to a valve control system, connecting an information handling system to the valve control system, controlling the actuation module with the valve control system, and activating the production tubing valve with the actuation module.

    PASSIVE ARM FOR BI-DIRECTIONAL WELL LOGGING INSTRUMENT

    公开(公告)号:WO2020236142A1

    公开(公告)日:2020-11-26

    申请号:PCT/US2019/032977

    申请日:2019-05-17

    Inventor: BEARD, David R.

    Abstract: A downhole tool may comprise a tool body that is a structural support for the downhole tool, an upper arm attached at one end to the tool body, a pad attached at an opposite end of the upper arm, a lower arm attached at one end to a sliding block and attached to the pad at an opposite end of the lower arm, and a passive arm connected to the lower arm and the tool body. A method may comprise disposing a downhole tool into a borehole, applying a force to a passive arm, applying a second force from the passive arm to the lower arm in response to the force applied to the passive arm, and moving the lower arm and the passive arm in a longitudinal direction along an axis of the downhole tool.

    COMPATIBLE LOW CRYSTALLINE SILICA SPACERS
    19.
    发明申请

    公开(公告)号:WO2020159549A1

    公开(公告)日:2020-08-06

    申请号:PCT/US2019/016402

    申请日:2019-02-01

    Abstract: The present disclosure relates to spacer fluids for use in subterranean operations and, more particularly, in certain embodiments, to spacer fluids that include a spacer additive comprising a solid scouring material and a biopolymer gum while being essential free of clay. An example method may comprise spacer fluid comprise water and a spacer additive. The spacer additive may comprise a solid scouring material and a biopolymer gum, wherein the solid scouring material comprises crystalline silica in an amount of about 5 wt. % or less, and wherein the spacer fluid is essentially free of clay. The example method may further comprise and introducing the spacer fluid into a wellbore to displace at least a portion of a first fluid in the wellbore.

    LOOK-AHEAD RESISTIVITY CONFIGURATION
    20.
    发明申请

    公开(公告)号:WO2020112090A1

    公开(公告)日:2020-06-04

    申请号:PCT/US2018/062641

    申请日:2018-11-27

    Abstract: A system and a method for a look-ahead drill bit. The system may comprise an ultra-deep transmitter operable to transmit a low frequency signal into a formation, a shallow tool operable to transmit a high frequency signal into the formation, at least one ultra-deep receiver operable to record a reflected low frequency signal, and at least one pair of collocated receivers, wherein the at least one pair of collocated receivers are operable to record a reflected high frequency signal. A method may comprise transmitting a high frequency signal from the shallow tool into the formation, transmitting a low frequency signal from the ultra-deep transmitter into the formation, evaluating the reflected high frequency signal and the reflected low frequency signal on an information handling system with a look-ahead inversion, and steering the bottom hole assembly in the formation based on the subterranean formation property.

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