Patents by Inventor Shan ZI

Shan ZI 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).

  • Convertible tracer valve assemblies and related methods for fracturing and tracing
    Patent number: 11959370
    Abstract: A valve assembly for integration within a wellbore string disposed within a hydrocarbon-containing reservoir is provided. The valve assembly includes a valve housing having a plurality of frac ports for establishing fluid communication between a central passage and the reservoir. The valve assembly includes a bottom sleeve operatively mounted within the valve housing configured to selectively open the frac ports, and a top sleeve operatively mounted within the valve housing slidable between (i) a first position defining a first fluid pathway whereby fluid is flowable down into the central passage and into the reservoir via the frac ports, and (ii) a tracing position defining a second fluid pathway whereby fluid is flowable from the reservoir into an annulus defined between the top sleeve and the housing. The valve assembly also has a tracer compartment defined within the annulus forming part of the second fluid pathway and accommodating a tracer material.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: April 16, 2024
    Assignees: NCS MULTISTAGE INC., NCS MULTISTAGE, LLC., REPEAT PRECISION, LLC.
    Inventors: Dustin Ellis, Shan Zi, John Ravensbergen, Craig Harty, Brock Gillis, Stanley Mberia, Anna Cruse, Rio Whyte
  • CONVERTIBLE TRACER VALVE ASSEMBLIES AND RELATED METHODS FOR FRACTURING AND TRACING
    Publication number: 20230003110
    Abstract: A valve assembly for integration within a wellbore string disposed within a hydrocarbon-containing reservoir is provided. The valve assembly includes a valve housing having a plurality of frac ports for establishing fluid communication between a central passage and the reservoir. The valve assembly includes a bottom sleeve operatively mounted within the valve housing configured to selectively open the frac ports, and a top sleeve operatively mounted within the valve housing slidable between (i) a first position defining a first fluid pathway whereby fluid is flowable down into the central passage and into the reservoir via the frac ports, and (ii) a tracing position defining a second fluid pathway whereby fluid is flowable from the reservoir into an annulus defined between the top sleeve and the housing. The valve assembly also has a tracer compartment defined within the annulus forming part of the second fluid pathway and accommodating a tracer material.
    Type: Application
    Filed: April 24, 2020
    Publication date: January 5, 2023
    Inventors: Dustin ELLIS, Shan ZI, John RAVENSBERGEN, Craig HARTY, Brock GILLIS, Stanley MBERIA, Anna CRUSE, Rio WHYTE