Patents by Inventor Dengyun Lu

Dengyun Lu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11982146
    Abstract: A jet flow adjustment method for rotary steerable downhole release includes steps of: defining a diversion ratio p of a jet nozzle by a ground control system; and sending the diversion ratio p of the jet nozzle to a control unit of a downhole rotary steerable system; and determining an opening areas of the jet nozzle by the control unit according to the diversion ratio p of the jet nozzle and an equivalent channel area S of a drilling tool; controlling an adjustable bypass valve by the control unit of the downhole rotary steerable system according to the calculated opening area s of the jet nozzle, so as to control an overlapping area between sector holes of a rotor end and a stator end, thereby opening the jet nozzle for release. The present invention has simple control and strong release ability.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: May 14, 2024
    Assignees: CHINA NATIONAL PETROLEUM CORPORATION, CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED
    Inventors: Jichuan Zhang, Dengyun Lu, Jing Bai, Yi Xie, Lei Li, Kexu Chen, Chongjun Huang, Lichun Jia, Dejun Zhang, Zhilin Li, Bin Mao
  • Patent number: 11946350
    Abstract: A method for remotely shutting down a downhole unit of a rotary steering system from ground includes steps of: a: calculating a pressure difference P1 between a front end and a rear end of the drill water hole; b: calculating an extension loss ?P; c: calculating a pressure P2 at the riser after turning on the downlink device; d: calculating an opening area S1 of the throttle valve of the downlink device; and e: adjusting the throttle valve to a calculated opening degree; automatically targeting the function block that needs to be cut off according to a flow change detected downhole, and shutting down the downhole unit. The method can realize self-protection and continuous operation of the entire rotary steering system, reduce frequency of inspection that needs to pull back the drill when the rotary steering system is abnormal, improve drilling efficiency, and reduce costs.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: April 2, 2024
    Assignees: CHINA NATIONAL PETROLEUM CORPORATION, CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED
    Inventors: Jing Bai, Jichuan Zhang, Dengyun Lu, Lei Li, Chongjun Huang, Lichun Jia, Chong Liao, Liexiang Han, Dejun Zhang, Gui Tang
  • Publication number: 20230223789
    Abstract: A system for dynamically adjusting coupling coefficients of a non-contact transmission magnetic mechanism, wherein a power supply end is connected to a non-contact transmission electric energy conversion module and a magnetic field regulation electric conversion module respectively by means of an input power consumption measurement unit, the non-contact transmission electric energy conversion module is connected to a transmitting coil by means of a tuning wave-blocking circuit, a receiving coil is provided corresponding to the transmitting coil, the receiving coil is provided on the wave-blocking circuit, the wave-blocking circuit is connected to a load end by means of a rectifying and voltage stabilizing circuit and an output power consumption measurement module, signal loading and extraction modules having a controller and a signal modulation and demodulation module are connected in parallel to two ends of the transmitting coil and the receiving coil
    Type: Application
    Filed: May 25, 2021
    Publication date: July 13, 2023
    Inventors: Jing Bai, Lei LI, Dengyun Lu, Jichuan Zhang, Yi Xie, Weicheng Li, Lichun Jia, Chongjun Huang, Liming Fan
  • Publication number: 20230204814
    Abstract: A gamma fusion computing method based on gamma probe parameters is provided, which relates to the technical field of oil drilling equipment while drilling, including: acquiring measurement values of two gamma probes in one continuous rotation period, and utilizing a mean value and a variance of the measurement values in the one rotation period as an evaluation reference value of each gamma probe; determining whether the gamma probes are abnormal, if the two gamma probes are both normal, utilizing the weight values to perform weight fusion on the measured values measured by two gamma probes, and if there is a gamma probe that is abnormal, then multiplying the average of the measured values of the normal gamma probe in the rotation period by 2 as a gamma output value for output. The gamma fusion computing method is capable of accurately determine the abnormal conditions of the gamma probes and effectively resolve the abnormal output.
    Type: Application
    Filed: May 25, 2021
    Publication date: June 29, 2023
    Inventors: Dengyun Lu, Jing Bai, Lei Li, Jichuan Zhang, Chongjun Huang, Chong Liao, Junbin Chen, Bin Zhang, Zhigang Dong, Xinjian Wang
  • Publication number: 20230193714
    Abstract: A jet flow adjustment method for rotary steerable downhole release relates to a technical field of downhole drilling equipment for oil wells, which includes steps of: defining a diversion ratio p of a jet nozzle (2) by a ground control system according to a cleaning requirement of a cuttings bed; and sending the diversion ratio p of the jet nozzle (2) to a control unit of a downhole rotary steerable system; and determining an opening area s of the jet nozzle (2) by the control unit of the downhole rotary steerable system according to the diversion ratio p of the jet nozzle (2) and an equivalent channel area S of a drilling tool, wherein a calculation formula is: s=p*S/(1?p); controlling an adjustable bypass valve (3) by the control unit of the downhole rotary steerable system according to the calculated opening area s of the jet nozzle (2), so as to control an overlapping area between sector holes (9) of a rotor end (7) and a stator end (8), thereby opening the jet nozzle (2) for release.
    Type: Application
    Filed: May 25, 2021
    Publication date: June 22, 2023
    Inventors: Jichuan Zhang, Dengyun Lu, Jing Bai, Yi Xie, Lei Li, Kexu Chen, Chongjun Huang, Lichun Jia, Dejun Zhang, Zhilin Li, Bin Mao