Patents by Inventor Dongchen Liu

Dongchen Liu 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 calculating single-well controlled reserve of low-permeability/tight gas reservoir and analyzing residual gas thereof
    Patent number: 11746650
    Abstract: The present invention belongs to the technical field of oil and gas field development, and discloses a method for calculating a single-well controlled reserve of a low-permeability/tight gas reservoir and analyzing residual gas thereof. The method includes: calculating a reserve controlled by each gas well in a block by using a gas reservoir dynamic reserve calculation method; establishing a new reserve calculation formula for solution and comparative analysis by an example; and quantitatively analyzing an effect of a startup pressure gradient and a stress sensitivity on a calculation result of the single-well controlled reserve, wherein the analysis of the factors affecting reserve calculation shows that, when the startup pressure gradient reaches 0.02 MPa/m, the calculated reserve is significantly reduced compared with a conventional method, but when the startup pressure gradient is greater than 0.1 MPa/m, the effect gradually stabilizes.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: September 5, 2023
    Assignee: Southwest Petroleum University
    Inventors: Ping Yue, Guozhuang Wang, Qingsong Gao, Dongchen Liu, Tao Lei, Guanglei Ren, Zhiwei Xie
  • METHOD FOR CALCULATING SINGLE-WELL CONTROLLED RESERVE OF LOW-PERMEABILITY/TIGHT GAS RESERVOIR AND ANALYZING RESIDUAL GAS THEREOF
    Publication number: 20210002999
    Abstract: The present invention belongs to the technical field of oil and gas field development, and discloses a method for calculating a single-well controlled reserve of a low-permeability/tight gas reservoir and analyzing residual gas thereof. The method includes: calculating a reserve controlled by each gas well in a block by using a gas reservoir dynamic reserve calculation method; establishing a new reserve calculation formula for solution and comparative analysis by an example; and quantitatively analyzing an effect of a startup pressure gradient and a stress sensitivity on a calculation result of the single-well controlled reserve, wherein the analysis of the factors affecting reserve calculation shows that, when the startup pressure gradient reaches 0.02 MPa/m, the calculated reserve is significantly reduced compared with a conventional method, but when the startup pressure gradient is greater than 0.1 MPa/m, the effect gradually stabilizes.
    Type: Application
    Filed: April 29, 2020
    Publication date: January 7, 2021
    Applicant: Southwest Petroleum University
    Inventors: Ping Yue, Guozhuang Wang, Qingsong Gao, Dongchen Liu, Tao Lei, Guanglei Ren, Zhiwei Xie