Patents by Inventor Dashan SHEN

Dashan SHEN 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).

  • Petroleum drill-string shock absorbers
    Patent number: 12139974
    Abstract: A petroleum drill-string shock absorber includes a drill collar nipple, a driving unit, an outer shell, a helical guideway, a drill bit base, a woven metal ring and a vibration-absorbing composite beam, the vibration-absorbing composite beam consists of a sheet metal and a flexible material gasket bonded by an adhesive; the drill collar nipple is connected with the helical guideway; the helical guideway is connected with the drill bit base; the driving unit rotates on the helical guideway; the outer shell is connected with the drill bit base; a metal seal ring is configured to seal a space formed between the outer shell and the drill collar nipple, a sealed space is formed among the drill collar nipple, the outer shell and the drill bit base; the woven metal ring is placed between the helical guideway and the drill bit base configured to absorb an axial impact vibration.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: November 12, 2024
    Assignees: University of Science and Technology Beijing, Shunde Graduate School, University of Science and Technology Beijing
    Inventors: Haiping Liu, Qi Lv, Dashan Shen, Donghang Han, Dongmei Zhu
  • PETROLEUM DRILL-STRING SHOCK ABSORBERS
    Publication number: 20230304361
    Abstract: A petroleum drill-string shock absorber includes a drill collar nipple, a driving unit, an outer shell, a helical guideway, a drill bit base, a woven metal ring and a vibration-absorbing composite beam, the vibration-absorbing composite beam consists of a sheet metal and a flexible material gasket bonded by an adhesive; the drill collar nipple is connected with the helical guideway; the helical guideway is connected with the drill bit base; the driving unit rotates on the helical guideway; the outer shell is connected with the drill bit base; a metal seal ring is configured to seal a space formed between the outer shell and the drill collar nipple, a sealed space is formed among the drill collar nipple, the outer shell and the drill bit base; the woven metal ring is placed between the helical guideway and the drill bit base configured to absorb an axial impact vibration.
    Type: Application
    Filed: March 22, 2022
    Publication date: September 28, 2023
    Applicants: University of Science and Technology Beijing, Shunde Graduate School, University of Science and Technology Beijing
    Inventors: Haiping LIU, Qi LV, Dashan SHEN, Donghang HAN, Dongmei ZHU