Patents by Inventor Kewei Zhang

Kewei Zhang 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).

  • Publication number: 20140243245
    Abstract: An aqueous slurry composition for use in industries such as petroleum and pipeline industries that includes: a particulate, an aqueous carrier fluid, a chemical compound that renders the particulate surface hydrophobic, and a small amount of an oil. The slurry is produced by rendering the surface of the particulate hydrophobic during or before the making of the slurry. The addition of the oil greatly enhances the aggregation potential of the hydrophobically modified particulates once placed in the well bore.
    Type: Application
    Filed: May 8, 2014
    Publication date: August 28, 2014
    Applicant: Trican Well Service Ltd.
    Inventor: Kewei ZHANG
  • Patent number: 8800658
    Abstract: An aqueous slurry composition for use in industries such as petroleum and pipeline industries that includes: a particulate, an aqueous carrier fluid, a chemical compound that renders the particulate surface hydrophobic, and a small amount of an oil. The slurry is produced by rendering the surface of the particulate hydrophobic during or before the making of the slurry. The addition of the oil greatly enhances the aggregation potential of the hydrophobically modified particulates once placed in the well bore.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: August 12, 2014
    Assignee: Trican Well Service Ltd.
    Inventor: Kewei Zhang
  • Patent number: 8499835
    Abstract: A method of agglomerating coal particles in a subterranean formation having a coal seam, comprising the steps of providing (a) a fluid having an aqueous medium and a first collector and/or a frother; (b) pumping the fluid into the formation and (c) contacting coal particles in the formation thereby agglomerating the contacted coal particles.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: August 6, 2013
    Assignee: Trican Well Services, Ltd.
    Inventors: Kewei Zhang, Chris Wiggins
  • Publication number: 20120322697
    Abstract: A method of altering the wettability of a subterranean formation comprising the steps of providing a fluid with a FEA; introducing the fluid into a subterranean formation whereby the wettability of the formation is altered, wherein the FEA is selected from a group consisting of organosiloxane, organosilane, fluoro-organosiloxane, fluoro-organosilane, and fluorocarbon compounds.
    Type: Application
    Filed: January 21, 2011
    Publication date: December 20, 2012
    Applicant: TRICAN WELL SERVICE LTD
    Inventor: Kewei Zhang
  • Publication number: 20120280682
    Abstract: Illustrative embodiments of systems for characterizing resonance behavior of magnetostrictive resonators are disclosed. In one illustrative embodiment, an apparatus may comprise a first channel including one or more driving coils and one or more magnetostrictive resonators, the first channel having a first impedance; a second channel having a second impedance, the second impedance differing from the first impedance by an impedance attributable to the one or more magnetostrictive resonators; a signal source configured to apply an input signal to both the first and second channels; and a signal receiver configured to generate a combined output signal in response to output signals measured from both the first and second channels.
    Type: Application
    Filed: April 6, 2012
    Publication date: November 8, 2012
    Inventors: Zhongyang Cheng, Anxue Zhang, Kewei Zhang, Bryan Chin
  • Publication number: 20120267112
    Abstract: A composition for isolating a zone in a wellbore comprising: an aqueous liquid hydrophobic solid particles, and an oil.
    Type: Application
    Filed: September 3, 2010
    Publication date: October 25, 2012
    Applicant: TRICAN WELL SERVICE LTD.
    Inventors: Kewei Zhang, ShanDong Cao
  • Publication number: 20120267105
    Abstract: An aqueous slurry composition for use in industries such as petroleum and pipeline industries that includes: a particulate, an aqueous carrier fluid, a chemical compound that renders the particulate surface hydrophobic, and a small amount of an oil. The slurry is produced by rendering the surface of the particulate hydrophobic during or before the making of the slurry. The addition of the oil greatly enhances the aggregation potential of the hydrophobically modified particulates once placed in the well bore.
    Type: Application
    Filed: July 3, 2012
    Publication date: October 25, 2012
    Applicant: Trican Well Service Ltd.
    Inventor: Kewei ZHANG
  • Patent number: 8236738
    Abstract: An aqueous slurry composition for use in industries such as petroleum and pipeline industries that includes: a particulate, an aqueous carrier fluid, a chemical compound that renders the particulate surface hydrophobic, and a small amount of an oil. The slurry is produced by rendering the surface of the particulate hydrophobic during or before the making of the slurry. The addition of the oil greatly enhances the aggregation potential of the hydrophobically modified particulates once placed in the well bore.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: August 7, 2012
    Assignee: Trican Well Service Ltd
    Inventor: Kewei Zhang
  • Publication number: 20120117694
    Abstract: Modified (iso)eugenol 4-O-methyltransferase enzymes having novel capacity for methylation of monolignols and reduction of lignin polymerization in plant cell wall are disclosed. Sequences encoding the modified enzymes are disclosed.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 10, 2012
    Applicant: Brookhaven Science Associates, LLC
    Inventors: Chang-Jun Liu, Mohammad-Wadud Bhuiya, Kewei Zhang
  • Publication number: 20120071371
    Abstract: A sand slurry composition and a method for making sand slurries are disclosed. The sand slurry composition is comprised of sand, an aqueous liquid and a chemical compound that renders the surface sand of hydrophobic. The method is comprised of rendering sand surface hydrophobic during or before making the slurry. This method and composition can find many applications in different industries, especially in various oil field applications.
    Type: Application
    Filed: November 28, 2011
    Publication date: March 22, 2012
    Applicant: TRICAN WELL SERVICE, LTD.
    Inventor: Kewei ZHANG
  • Publication number: 20120067584
    Abstract: The present invention provides hydrocarbon-based fracturing fluid compositions comprising a hydrocarbon fluid, proppant, and a small amount of water, and methods of using same. The small amount of water, preferably present at a concentration ranging from about 0.1% to about 5%, causes water bridging between the proppant particulates, causing the proppant particles to agglomerate. The compositions are useful in mitigating proppant flowback in hydraulic fracturing operations and are useful in isolating one or more zones in vertical as well as horizontal wells having multiple pay zones.
    Type: Application
    Filed: March 17, 2011
    Publication date: March 22, 2012
    Inventors: Kewei Zhang, Chris Wiggins
  • Patent number: 8105986
    Abstract: A sand slurry composition and a method for making sand slurries are disclosed. The sand slurry composition is comprised of sand, an aqueous liquid and a chemical compound that renders the surface sand of hydrophobic. The method is comprised of rendering sand surface hydrophobic during or before making the slurry. This method and composition can find many applications in different industries, especially in various oil field applications.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: January 31, 2012
    Assignee: Trican Well Service Ltd.
    Inventor: Kewei Zhang
  • Publication number: 20110186297
    Abstract: Smart fluid compositions and methods of use in the well service operations.
    Type: Application
    Filed: February 4, 2011
    Publication date: August 4, 2011
    Applicant: TRICAN WELL SERVICE LTD.
    Inventors: Kewei Zhang, Scott Sherman
  • Patent number: 7977285
    Abstract: Hydrocarbon fluid compositions comprising a liquid hydrocarbon, an aluminum soap, a hydrocarbon foaming agent and a gas. The fluids can be used in various oil field operations.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: July 12, 2011
    Assignee: Trican Well Service Ltd.
    Inventors: Kewei Zhang, Bill O'Neil, Darren Maley
  • Publication number: 20110011589
    Abstract: A method of agglomerating coal particles in a subterranean formation having a coal seam, comprising the steps of providing (a) a fluid having an aqueous medium and a first collector and/or a frother; (b) pumping the fluid into the formation and (c) contacting coal particles in the formation thereby agglomerating the contacted coal particles.
    Type: Application
    Filed: June 13, 2008
    Publication date: January 20, 2011
    Applicant: TRICAN WELL SERVICE LTD.
    Inventors: Kewei Zhang, Chris Wiggins
  • Publication number: 20100267593
    Abstract: An aqueous slurry composition for use in industries such as petroleum and pipeline industries that includes: a particulate, an aqueous carrier fluid, a chemical compound that renders the particulate surface hydrophobic, and a small amount of an oil. The slurry is produced by rendering the surface of the particulate hydrophobic during or before the making of the slurry. The addition of the oil greatly enhances the aggregation potential of the hydrophobically modified particulates once placed in the well bore.
    Type: Application
    Filed: April 25, 2008
    Publication date: October 21, 2010
    Applicant: Trican Well Service Ltd.
    Inventor: Kewei Zhang
  • Publication number: 20100256024
    Abstract: A resin coated proppant slurry and a method for preparing a slurry is provided where the resin coated proppant particles are rendered less dense by attaching stable micro-bubbles to the surface of the resin coated proppants. A collector or frother may be added to enhance the number or stability of bubbles attached to the proppants. This method and composition finds use in many industries, especially in oil field applications.
    Type: Application
    Filed: July 15, 2008
    Publication date: October 7, 2010
    Applicant: TRICAN WELL SERVICE LTD.
    Inventor: Kewei Zhang
  • Publication number: 20100204071
    Abstract: A sand slurry composition and a method for making sand slurries are disclosed. The sand slurry composition is comprised of sand, an aqueous liquid and a chemical compound that renders the surface sand of hydrophobic. The method is comprised of rendering sand surface hydrophobic during or before making the slurry. This method and composition can find many applications in different industries, especially in various oil field applications.
    Type: Application
    Filed: April 11, 2008
    Publication date: August 12, 2010
    Applicant: TRICAN WELL SERVICE, LTD.
    Inventor: Kewei Zhang
  • Publication number: 20100197526
    Abstract: An aqueous slurry composition for use in industries such as the petroleum and pipeline industries includes a particulate, an aqueous liquid and a chemical compound that renders the particulate surface extremely hydrophobic. The slurry is produced by rendering the surface of the particulate extremely hydrophobic during or before making the slurry.
    Type: Application
    Filed: April 13, 2010
    Publication date: August 5, 2010
    Inventor: Kewei Zhang
  • Publication number: 20100190665
    Abstract: Flocculants and/or coagulants are used with recyclable drilling fluids to agglomerate particles and in particular fine solids (“fines”) including coal fines, such that they settle out of the fluid. The most widely used flocculants are different types of polymers including polyacrylamide (PMA) having different molecular weights, polyethylene oxide (PEO) having various molecular weights and other suitable polymeric flocculents known in coal beneficiation industry. For coal fines, other coagulants such as hydrocarbons, including kerosene, fuel oil, or a C5 to C8 hydrocarbon, either alone or in combination with a surfactant or a polymer, can also be used.
    Type: Application
    Filed: February 27, 2009
    Publication date: July 29, 2010
    Inventors: Kewei Zhang, Darren K. Lee