Patents by Inventor Xianghui QIN

Xianghui QIN 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).

  • Method for accurately measuring reopening pressure of hydraulic fracturing induced fracture in deep borehole
    Patent number: 11274543
    Abstract: The present disclosure relates to the technical field of rock mechanics, and in particular to a method for accurately measuring a reopening pressure of hydraulic fracturing induced fracture in a deep borehole. The method includes: pumping a fluid into a sealed inner space of a drilling pipe for energy storage; and opening a valve at a lower end of the drilling pipe such that energy is released from the fluid in the inner space of the drilling pipe under the action of pressure to inject the fluid into a test interval. In the method according to the present disclosure, a fluid is pumped into an inner space of a drilling pipe so that the inner space of the drilling pipe is used as a high-pressure fluid pump to inject the fluid in the inner space of the drilling pipe to the test interval until the closed fracture is reopened.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: March 15, 2022
    Assignee: Institute of Geomechanics, Chinese Academy of Geological Sciences
    Inventors: Qunce Chen, Chongyuan Zhang, Dongsheng Sun, Xianghui Qin, Wen Meng, Quan Li, Ming Jin
  • METHOD FOR ACCURATELY MEASURING REOPENING PRESSURE OF HYDRAULIC FRACTURING INDUCED FRACTURE IN DEEP BOREHOLE
    Publication number: 20200332647
    Abstract: The present disclosure relates to the technical field of rock mechanics, and in particular to a method for accurately measuring a reopening pressure of hydraulic fracturing induced fracture in a deep borehole. The method includes: pumping a fluid into a sealed inner space of a drilling pipe for energy storage; and opening a valve at a lower end of the drilling pipe such that energy is released from the fluid in the inner space of the drilling pipe under the action of pressure to inject the fluid into a test interval. In the method according to the present disclosure, a fluid is pumped into an inner space of a drilling pipe so that the inner space of the drilling pipe is used as a high-pressure fluid pump to inject the fluid in the inner space of the drilling pipe to the test interval until the closed fracture is reopened.
    Type: Application
    Filed: July 5, 2019
    Publication date: October 22, 2020
    Applicant: Institute of Geomechanics, Chinese Academy of Geological Sciences
    Inventors: Qunce CHEN, Chongyuan ZHANG, Dongsheng SUN, Xianghui QIN, Wen MENG, Quan LI, Ming JIN