Patents by Inventor Xiangqian BU

Xiangqian BU 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).

  • Low-density, high-strength degradable temporary pugging agent and the preparation method and use thereof
    Patent number: 11053427
    Abstract: A low density, high-strength, degradable temporary plugging agent which includes 60% by weight to 85% by weight of polylactic acid, 5% by weight to 20% by weight of a starch, 5% by weight to 10% by weight of polycaprolactone, 2% by weight to 5% by weight of a solubilizing agent, and 2% by weight to 5% by weight of a toughening agent, based on 100% by weight of the total weight of the agent. The rigid agent can result in bridge plugging in existing cracks, with a significant increase in pressure. The preparation method is simple, the process requirements are low, and industrial production can be realized. When applied to temporary plugging fracturing, under formation conditions, it can be completely degraded within a certain period of time and will not cause secondary damage to the reservoir, while preventing the agent from polluting the formation and the occurrence of pump accidents.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: July 6, 2021
    Assignee: PetroChina Company Limited
    Inventors: Baoqiang Lv, Lijun Mu, Zhenfeng Zhao, Hongjun Lu, Xiangqian Bu, Yin Qi, Jianshan Li, Boping Zhao, Xiangping Li, Jianhui Li, Li'an Yang, Jun Bu
  • LOW-DENSITY, HIGH-STRENGTH DEGRADABLE TEMPORARY PUGGING AGENT AND THE PREPARATION METHOD AND USE THEREOF
    Publication number: 20190136116
    Abstract: A low density, high-strength, degradable temporary plugging agent which includes 60% by weight to 85% by weight of polylactic acid, 5% by weight to 20% by weight of a starch, 5% by weight to 10% by weight of polycaprolactone, 2% by weight to 5% by weight of a solubilizing agent, and 2% by weight to 5% by weight of a toughening agent, based on 100% by weight of the total weight of the agent. The rigid agent can result in bridge plugging in existing cracks, with a significant increase in pressure. The preparation method is simple, the process requirements are low, and industrial production can be realized. When applied to temporary plugging fracturing, under formation conditions, it can be completely degraded within a certain period of time and will not cause secondary damage to the reservoir, while preventing the agent from polluting the formation and the occurrence of pump accidents.
    Type: Application
    Filed: December 28, 2018
    Publication date: May 9, 2019
    Applicant: PetroChina Company Limited
    Inventors: Baoqiang LV, Lijun MU, Zhenfeng ZHAO, Hongjun LU, Xiangqian BU, Yin QI, Jianshan LI, Boping ZHAO, Xiangping LI, Jianhui LI, Li'an YANG, Jun BU