Patents by Inventor Wubin GAO

Wubin GAO 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 enhancing oil recovery in huff-puff oil production of tight oil from a fractured horizontal well
    Patent number: 10196884
    Abstract: A method for enhancing oil recovery in huff-puff oil production of tight oil from a fractured horizontal well by an optimized reservoir pressure, washing the horizontal well by sand flushing, injecting water into the reservoir to increase the stratum pressure around the horizontal well, and stopping the water injection when the pressure retention level is 100% at end stage of the water injection period. The method for enhancing oil recovery in huff-puff oil production of tight oil from a fractured horizontal well enables the crude oil in the pores of the matrix in the tight reservoir rock developed by the natural fracture to be further recovered. Comprehensive utilization of stratum energy boost, and imbibition replacement between the injected water and the reservoir crude oil improves the single-well production to enhance the oil recovery of a tight oil reservoir.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: February 5, 2019
    Assignee: Petrochina Company Limited
    Inventors: Zhongxing Li, Jiyong Zhao, Xuefeng Qu, Qihong Lei, Youan He, Wubin Gao, Wantao Liu, Xuanru Wang, Wenlong Chen, Guoxi Zhao
  • Method for Enhancing Oil Recovery in Huff-Puff Oil Production of Tight Oil from a Fractured Horizontal Well
    Publication number: 20170314377
    Abstract: A method for enhancing oil recovery in huff-puff oil production of tight oil from a fractured horizontal well by an optimized reservoir pressure, washing the horizontal well by sand flushing, injecting water into the reservoir to increase the stratum pressure around the horizontal well, and stopping the water injection when the pressure retention level is 100% at end stage of the water injection period. The method for enhancing oil recovery in huff-puff oil production of tight oil from a fractured horizontal well enables the crude oil in the pores of the matrix in the tight reservoir rock developed by the natural fracture to be further recovered. Comprehensive utilization of stratum energy boost, and imbibition replacement between the injected water and the reservoir crude oil improves the single-well production to enhance the oil recovery of a tight oil reservoir.
    Type: Application
    Filed: May 1, 2017
    Publication date: November 2, 2017
    Inventors: Zhongxing LI, Jiyong ZHAO, Xuefeng QU, Qihong LEI, Youan HE, Wubin GAO, Wantao LIU, Xuanru WANG, Wenlong CHEN, Guoxi ZHAO