Auto-adjustable directional drilling apparatus and method

    公开(公告)号:US10995554B2

    公开(公告)日:2021-05-04

    申请号:US16477643

    申请日:2018-01-12

    Abstract: An auto-adjustable directional drilling apparatus comprises: a drive-shaft housing; a drill collar coupled to the drive-shaft housing; a drive shaft passing through the drive-shaft housing and the drill collar; an active stabilizer fixed to the drive-shaft housing and movably coupled to the drill collar; a sliding assembly comprising a base support fixed to the drill collar and a sliding base coupled to the drive-shaft housing, wherein the base support defines a slide way and the sliding base is slidably disposed in the slide way; and an actuating module coupled to the sliding base to drive the sliding base to slide along the slide way. An auto-adjustable directional drilling method is also disclosed.

    Apparatus and method for flexible gamma ray detectors

    公开(公告)号:US10261213B2

    公开(公告)日:2019-04-16

    申请号:US15616694

    申请日:2017-06-07

    Abstract: A radiation detector useable in a downhole tool configured to be positioned in a borehole includes a printed circuit board and at least one detector element coupled to the printed circuit board. The at least one detector element includes a semiconductor direct conversion material for directly converting gamma rays into electrical signals. The semiconductor direct conversion material includes a cathode surface and an anode surface. In addition, the at least one detector element includes a cathode operatively connected to the cathode surface, and an anode operatively coupled to the anode surface. The radiation detector also includes a voltage source coupled to the printed circuit board and configured to provide a voltage to the at least one detector element.

    FLOW MODULATOR FOR USE IN A DRILLING SYSTEM
    13.
    发明申请

    公开(公告)号:US20180340415A1

    公开(公告)日:2018-11-29

    申请号:US15604018

    申请日:2017-05-24

    Abstract: A drilling system including a sensor configured to monitor at least one drilling parameter, and configured to generate a signal based on the at least one drilling parameter. An encoder is in communication with the sensor, and the encoder is configured to convert the signal into a modulation signal. A flow modulator is configured to channel drilling fluid therethrough. The flow modulator includes at least one stator element and a rotor element configured to freely rotate relative to the at least one stator element as the drilling fluid flows past the rotor element. A braking system is in communication with the encoder, and the braking system is configured to selectively decrease a rotational speed of the rotor element based on the modulation signal such that an encoded acoustic signal is emitted from the flow modulator through the drilling fluid.

    Downhole power generation system and method

    公开(公告)号:US11555380B2

    公开(公告)日:2023-01-17

    申请号:US16608030

    申请日:2018-04-24

    Abstract: A downhole power generation includes a power generation module for providing power to a load. A turbine is driven by flow of a downhole fluid to rotate. A generator is coupled with the turbine for converting rotational energy from the turbine to electrical energy, and an AC-DC rectifier is coupled with the generator for converting an alternating voltage from the generator to a direct voltage. A power conversion circuit couples the AC-DC rectifier with the load. The power conversion circuit is configured for providing a first power to the load when the load is in a working mode and providing a second power to the load when the load is in a non-working mode. The second power is less than the first power. A downhole power generation method is also disclosed.

    Downhole power generation system and optimized power control method thereof

    公开(公告)号:US11454094B2

    公开(公告)日:2022-09-27

    申请号:US16608009

    申请日:2018-04-24

    Abstract: A downhole power generation system is disclosed, which includes a turbine generator system. The turbine generator system includes a turbine, a generator coupled with the turbine and having an AC-DC rectifier, and an optimized power control unit. The turbine is driven by flow of a downhole fluid to rotate. The generator converts rotational energy from the turbine to electrical energy and outputting a direct current voltage. The turbine generator system is coupled to a load via the optimized power control unit. The optimized power control unit controls to regulate an output voltage of the generator and provides a regulated output voltage to the load so that the turbine generator system has an optimized power output. An optimized power control method for a downhole power generation system is also disclosed.

    Hydrocarbon production system and an associated method thereof

    公开(公告)号:US10323494B2

    公开(公告)日:2019-06-18

    申请号:US15196737

    申请日:2016-06-29

    Abstract: A system includes a casing-liner, a first downhole separator, a production pump, and a second downhole separator disposed within a wellbore casing disposed in a wellbore. An annular disposal zone is defined between the casing-liner and the wellbore casing. First downhole separator is configured to receive a production fluid from a production zone and generate a hydrocarbon rich stream and a water stream including a solid medium. Production pump is configured to pump the hydrocarbon rich stream from the first downhole separator to a surface unit. Second downhole separator is configured to receive the water stream including the solid medium from the first downhole separator, separate the solid medium to generate a separated water stream, and dispose the solid medium to the annular disposal zone. The system further includes a tube configured to dispose the separated water stream from the second downhole separator to a water disposal zone in wellbore.

    Flow modulator for use in a drilling system

    公开(公告)号:US10145239B1

    公开(公告)日:2018-12-04

    申请号:US15604018

    申请日:2017-05-24

    Abstract: A drilling system including a sensor configured to monitor at least one drilling parameter, and configured to generate a signal based on the at least one drilling parameter. An encoder is in communication with the sensor, and the encoder is configured to convert the signal into a modulation signal. A flow modulator is configured to channel drilling fluid therethrough. The flow modulator includes at least one stator element and a rotor element configured to freely rotate relative to the at least one stator element as the drilling fluid flows past the rotor element. A braking system is in communication with the encoder, and the braking system is configured to selectively decrease a rotational speed of the rotor element based on the modulation signal such that an encoded acoustic signal is emitted from the flow modulator through the drilling fluid.

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