Patents by Inventor Zhensong Wang

Zhensong Wang 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).

  • Gas lift apparatus for flushing and snubbing well
    Patent number: 7770634
    Abstract: A gas lift production apparatus is provided for use in flushing and snubbing well operation. The apparatus comprises upper production string and lower production string. The upper production string includes at least one side pocket mandrel carrying a gas lift valve, tubular strings connected with every side pocket mandrel, a sliding sleeve installed as part of the production string below side pocket mandrels and a latch seal assembly threaded in the tubular string below the sliding sleeve. The lower production string includes a single bore packer below the latch seal assembly, tubular strings, a landing nipple and a bell mouth at the bottom of the production string. The upper production string are run in and removed as a single unit from the packer which is anchored within the well casing. It is emphasized that this apparatus is provided with three functions such as producing a gas lift well, flushing well and snubbing well operation.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: August 10, 2010
    Assignee: Development & Research Center of Tuha Petroleum Exploration & Development Corporation
    Inventors: Yu Lei, Yong Li, Qiang Wang, Zhenghua Wu, Zhimin Xu, Zhensong Wang, Meijuan Suo
  • GAS LIFT APPARATUS FOR FLUSHING AND SNUBBING WELL
    Publication number: 20090114383
    Abstract: A gas lift production apparatus is provided for use in flushing and snubbing well operation. The apparatus comprises upper production string and lower production string. The upper production string includes at least one side pocket mandrel carrying a gas lift valve, tubular strings connected with every side pocket mandrel, a sliding sleeve installed as part of the production string below side pocket mandrels and a latch seal assembly threaded in the tubular string below the sliding sleeve. The lower production string includes a single bore packer below the latch seal assembly, tubular strings, a landing nipple and a bell mouth at the bottom of the production string. The upper production string are run in and removed as a single unit from the packer which is anchored within the well casing. It is emphasized that this apparatus is provided with three functions such as producing a gas lift well, flushing well and snubbing well operation.
    Type: Application
    Filed: October 13, 2008
    Publication date: May 7, 2009
    Inventors: Yu Lei, Yong Li, Qiang Wang, Zhenghua Wu, Zhimin Xu, Zhensong Wang, Meijuan Suo