Patents by Inventor Zhonghai ZHOU

Zhonghai ZHOU 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).

  • Drilling speed increasing device driven by downhole motor for generating shock vibration
    Patent number: 10927607
    Abstract: The present invention discloses a drilling speed increasing device driven by a downhole motor for generating shock vibration. The device uses the rotational energy of a screw motor as power to drive a lower vibration starter to rotate. Vibration starting steel balls have the function of reducing friction in the interior. During axial reciprocating motion of the upper vibration starter, a spring matched with the upper vibration starter is periodically compressed to generate spring energy. The spring energy reacts on the lower vibration starter and a main shaft connected with a drill bit, so as to periodically provide drilling pressure for the drill bit. Periodic motion of the upper vibration starter and the spring produces periodic axial vibration on the tool.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: February 23, 2021
    Assignee: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
    Inventors: Hualin Liao, Can Yi, Jilei Niu, Zhichuan Guan, Zhonghai Zhou, Yucai Shi, Yongwang Liu
  • DRILLING SPEED INCREASING DEVICE DRIVEN BY DOWNHOLE MOTOR FOR GENERATING SHOCK VIBRATION
    Publication number: 20200199959
    Abstract: The present invention discloses a drilling speed increasing device driven by a downhole motor for generating shock vibration. The device uses the rotational energy of a screw motor as power to drive a lower vibration starter to rotate. Vibration starting steel balls have the function of reducing friction in the interior. During axial reciprocating motion of the upper vibration starter, a spring matched with the upper vibration starter is periodically compressed to generate spring energy. The spring energy reacts on the lower vibration starter and a main shaft connected with a drill bit, so as to periodically provide drilling pressure for the drill bit. Periodic motion of the upper vibration starter and the spring produces periodic axial vibration on the tool.
    Type: Application
    Filed: February 28, 2020
    Publication date: June 25, 2020
    Inventors: Hualin LIAO, Can YI, Jilei NIU, Zhichuan GUAN, Zhonghai ZHOU, Yucai SHI, Yongwang LIU