Patents by Inventor Liweng CAO

Liweng CAO 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).

  • Simulation test method for gas extraction from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity
    Patent number: 10995572
    Abstract: A simulation test method for gas extraction from a tectonically-deformed coal seam in-situ by depressurizing a horizontal well cavity. A coal series stratum structure reconstruction and similar material simulation subsystem simulates a tectonically-deformed coal reservoir. A horizontal well drilling and reaming simulation subsystem constructs a U-shaped well in which a horizontal well adjoins a vertical well, and performs a reaming process on a horizontal section thereof. A horizontal well hole-collapse cavity-construction depressurization excitation simulation subsystem performs pressure-pulse excitation and stress release on the horizontal well, and hydraulically displaces a coal-liquid-gas mixture such that the mixture is conveyed towards a vertical well section. A product lifting simulation subsystem further pulverizes the coal and lifts the mixture. A gas-liquid-solid separation simulation subsystem separates the coal, liquid and gas.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: May 4, 2021
    Assignees: China University of Mining and Technology, XUZHOU OLIVINE GEOSCIENCE & GEOTECH CO., LTD, CHINA UNIVERSITY OF PETROLEUM, EAST CHINA, ANHUI UNIVERSITY OF SCIENCE AND TECHNOLOGY, WUHAN INSTITUTE OF TECHNOLOGY
    Inventors: Shuxun Sang, Xiaozhi Zhou, Liweng Cao, Shiqi Liu, Haiwen Wang, Huihu Liu, Zicheng Li, Jinlong Jia, Huazhou Huang, Changjiang Liu, Hongjie Xu, Ran Wang, Shuyun Zhu
  • SIMULATION TEST SYSTEM FOR GAS EXTRACTION FROM TECTONICALLY-DEFORMED COAL SEAM IN-SITU BY DEPRESSURIZING HORIZONTAL WELL CAVITY
    Publication number: 20200318476
    Abstract: A simulation test system for gas extraction from a tectonically-deformed coal seam in-situ by depressurizing a horizontal well cavity. A coal series stratum structure reconstruction and similar material simulation subsystem simulates a tectonically-deformed coal reservoir. A horizontal well drilling and reaming simulation subsystem constructs a U-shaped well in which a horizontal well adjoins a vertical well, and performs a reaming process on a horizontal section thereof. A horizontal well hole-collapse cavity-construction depressurization excitation simulation subsystem performs pressure-pulse excitation and stress release on the horizontal well, and hydraulically displaces a coal-liquid-gas mixture such that the mixture is conveyed towards a vertical well section. A product lifting simulation subsystem further pulverizes the coal and lifts the mixture. A gas-liquid-solid separation simulation subsystem separates the coal, liquid and gas.
    Type: Application
    Filed: November 12, 2018
    Publication date: October 8, 2020
    Applicants: China University of Mining and Technology, XUZHOU OLIVINE GEOSCIENCE & GEOTECH CO., LTD, CHINA UNIVERSITY OF PETROLEUM, EAST CHINA, ANHUI UNIVERSITY OF SCIENCE AND TECHNOLOGY, WUHAN INSTITUTE OF TECHNOLOGY
    Inventors: Shuxun SANG, Haiwen WANG, Xiaozhi ZHOU, Liweng CAO, Shiqi LIU, Huihu LIU, Zicheng LI, Jinlong JIA, Huazhou HUANG, Changjiang LIU, Hongjie XU, Ran WANG, Shuyun ZHU
  • SIMULATION TEST METHOD FOR GAS EXTRACTION FROM TECTONICALLY-DEFORMED COAL SEAM IN-SITU BY DEPRESSURIZING HORIZONTAL WELL CAVITY
    Publication number: 20200263511
    Abstract: A simulation test method for gas extraction from a tectonically-deformed coal seam in-situ by depressurizing a horizontal well cavity. A coal series stratum structure reconstruction and similar material simulation subsystem simulates a tectonically-deformed coal reservoir. A horizontal well drilling and reaming simulation subsystem constructs a U-shaped well in which a horizontal well adjoins a vertical well, and performs a reaming process on a horizontal section thereof. A horizontal well hole-collapse cavity-construction depressurization excitation simulation subsystem performs pressure-pulse excitation and stress release on the horizontal well, and hydraulically displaces a coal-liquid-gas mixture such that the mixture is conveyed towards a vertical well section. A product lifting simulation subsystem further pulverizes the coal and lifts the mixture. A gas-liquid-solid separation simulation subsystem separates the coal, liquid and gas.
    Type: Application
    Filed: November 12, 2018
    Publication date: August 20, 2020
    Applicants: China University of Mining and Technology, XUZHOU OLIVINE GEOSCIENCE & GEOTECH CO., LTD, CHINA UNIVERSITY OF PETROLEUM, EAST CHINA, ANHUI UNIVERSITY OF SCIENCE AND TECHNOLOGY, WUHAN INSTITUTE OF TECHNOLOGY
    Inventors: Shuxun SANG, Xiaozhi ZHOU, Liweng CAO, Shiqi LIU, Haiwen WANG, Huihu LIU, Zicheng LI, Jinlong JIA, Huazhou HUANG, Changjiang LIU, Hongjie XU, Ran WANG, Shuyun ZHU