Patents by Inventor Jianzhao Wang

Jianzhao 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).

  • Patent number: 11001751
    Abstract: The invention provides polymers comprising repeating units derived from at least one monomer comprising at least one functionalized or unfunctionalized acryloyl moiety and at least one lactam moiety; at least one monomer comprising at least one sulfonic acid moiety or a salt thereof; and at least one crosslinker. The invention further provides various compositions comprising the polymers. The invention furthermore provides applications of these compositions in various industrial arts, particularly in oilfield operations such as drilling and cementing.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: May 11, 2021
    Assignee: HERCULES LLC
    Inventors: Ryan Vincent Blazewicz, Janice Jianzhao Wang, Brent R. Gonska
  • Patent number: 10202533
    Abstract: Stable water based High-Temperature-High-Pressure (HTHP) and/or Non-HTHP crosslinked copolymers for oil and gas applications consist of (i) a crosslinked, linear polyvinyl amide/polymerizable carboxylic acid) copolymer, having a composition, by weight, of 25-75 wt. % of a vinyl amide monomer selected from vinyl pyrrolidone, vinyl caprolactam, N-vinyl-N-methylacetamide and mixtures thereof, and 25-75 wt. % of a polymerizable carboxylic acid monomer selected from acrylic acid, (meth)acrylic acid, crotonic acid, itaconic acid, maleic acid and mixture thereof; and (ii) a crosslinker in an amount of 0.01-5% based on weight of total monomers. Also discloses relevant compositions comprising said copolymer and method of use thereof.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: February 12, 2019
    Assignee: ISP INVESTMENTS LLC
    Inventors: Janice Jianzhao Wang, Mohand Melbouci, Jeffrey Lynn, Cuiyue Lei, Osama M. Musa
  • Patent number: 10113099
    Abstract: What is described herein is an aqueous high-temperature high-pressure (HTHP) stable drilling mud composition comprising (i) about 20 wt. % to about 80 wt. % of 0-60% w/w brine solution; (ii) about 0.1 wt. % to about 3 wt. % of butylated reaction product of p-cresol and dicyclopentadiene, a polymeric hindered phenol based antioxidant; (iii) about 0.1 wt. % to about 10.0 wt. % of triethanol amine, a chelating agent; (iv) (a) about 0.1 wt. % to about 10 wt. % of rheology modifier (RM); and/or (b) about 0.5 wt. % to about 30 wt. % of fluid loss additive (FLA); (v) about 20 wt. % to about 80 wt. % of weighting agent; (vi) about 0 wt. % to about 20 wt. % of drilling solid; and (vii) about 0 wt. % to about 50 wt % of water.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: October 30, 2018
    Assignee: ISP INVESTMENTS LLC
    Inventors: Janice Jianzhao Wang, Jun Zheng, Mohand Melbouci
  • Patent number: 10023782
    Abstract: A salt-tolerant, thermally-stable rheology modifier and, in particular, a rheology modifier for applications in oilfield well-bore fluids. In accordance with one aspect, the rheology modifier comprises a terpolymer of acrylamide, 2-acrylamido-2-methyl-propanesulfonic acid (AMPS) and a long-chain alkyl acrylate wherein the terpolymer is prepared by dispersion polymerization.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: July 17, 2018
    Assignee: ISP INVESTMENTS LLC
    Inventors: Janice Jianzhao Wang, Jun Zheng, David Farrar, Osama M. Musa
  • Patent number: 9969921
    Abstract: The present application relates to an oil and gas treatment composition comprising (i) a blend of hydroxyethyl cellulose (HEC) and crosslinked polyvinylpyrrolidone, (ii) an aqueous based continuous phase, (iii) a reactive clay or shale material, and (iv) at least one drilling fluid additive. The present application also relates to a method for inhibiting hydration of clays or shale materials in drilling a subterranean well using the composition. A different embodiment of the application discloses that the composition additionally comprises organophilic clay, a stabilizer and white medicinal oil.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: May 15, 2018
    Assignee: HERCULES LLC
    Inventors: Jianzhao Wang, Mohand Melbouci
  • Patent number: 9914790
    Abstract: The present disclosure relates generally to a composition comprising a low molecular weight graft polymer. The graft polymer is a graft homopolymer, copolymer or terpolymer. Additionally, the present disclosure relates to a scale inhibitor composition comprising the low molecular weight graft polymer. Furthermore, the present disclosure relates to a process for preventing the deposition of scale from water or aqueous solution and a method for scale inhibition treatment of an oil or gas production well by using the low molecular weight graft polymer. The scale inhibitor is low corrosive for application in the oilfield.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: March 13, 2018
    Assignee: HERCULES LLC
    Inventors: Janice Jianzhao Wang, Mohand Melbouci
  • Publication number: 20170335162
    Abstract: A salt-tolerant, thermally-stable rheology modifier and, in particular, a rheology modifier for applications in oilfield well-bore fluids. In accordance with one aspect, the rheology modifier comprises a terpolymer of acrylamide, 2-acrylamido-2-methyl-propanesulfonic acid (AMPS) and a long-chain alkyl acrylate wherein the terpolymer is prepared by dispersion polymerization.
    Type: Application
    Filed: April 3, 2017
    Publication date: November 23, 2017
    Inventors: Janice Jianzhao WANG, Jun ZHENG, David FARRAR, Osama M. MUSA
  • Patent number: 9611416
    Abstract: A salt-tolerant, thermally-stable rheology modifier and, in particular, a rheology modifier for applications in oilfield well-bore fluids. In accordance with one aspect, the rheology modifier comprises a terpolymer of acrylamide, 2-acrylamido-2-methyl-propanesulfonic acid (AMPS) and a long-chain alkyl acrylate wherein the terpolymer is prepared by dispersion polymerization.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: April 4, 2017
    Assignee: ISP INVESTMENTS LLC
    Inventors: Janice Jianzhao Wang, Jun Zheng, David Farrar, Osama M. Musa
  • Publication number: 20170015588
    Abstract: The presently disclosed and/or claimed inventive process concept(s) relates generally to a water soluble or water dispersible composition comprising a copolymer and use in oil field. More particularly, the presently disclosed and/or claimed inventive concept(s) relates to the copolymers comprising allyloxy linkage and its function derivatives and its use in oil field such as a high temperature cement retarder composition.
    Type: Application
    Filed: July 15, 2016
    Publication date: January 19, 2017
    Applicant: HERCULES INCORPORATED
    Inventors: Mohand MELBOUCI, Janice Jianzhao WANG
  • Publication number: 20160272868
    Abstract: Stable water based High-Temperature-High-Pressure (HTHP) and/or Non-HTHP crosslinked copolymers for oil and gas applications consist of (i) a crosslinked, linear polyvinyl amide/polymerizable carboxylic acid) copolymer, having a composition, by weight, of 25-75 wt. % of a vinyl amide monomer selected from vinyl pyrrolidone, vinyl caprolactam, N-vinyl-N-methylacetamide and mixtures thereof, and 25-75 wt. % of a polymerizable carboxylic acid monomer selected from acrylic acid, (meth)acrylic acid, crotonic acid, itaconic acid, maleic acid and mixture thereof; and (ii) a crosslinker in an amount of 0.01-5% based on weight of total monomers. Also discloses relevant compositions comprising said copolymer and method of use thereof.
    Type: Application
    Filed: April 28, 2014
    Publication date: September 22, 2016
    Applicant: ISP INVESTMENTS INC.
    Inventors: Janice Jianzhao WANG, Mohand MELBOUCI, Jeffrey LYNN, Cuiyue LEI, Osama M. MUSA
  • Publication number: 20160264836
    Abstract: The present application relates to an oil and gas treatment composition comprising (i) a blend of hydroxyethyl cellulose (HEC) and crosslinked polyvinylpyrrolidone, (ii) an aqueous based continuous phase, (iii) a reactive clay or shale material, and (iv) at least one drilling fluid additive. The present application also relates to a method for inhibiting hydration of clays or shale materials in drilling a subterranean well using the composition. A different embodiment of the application discloses that the composition additionally comprises organophilic clay, a stabilizer and white medicinal oil.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 15, 2016
    Applicant: HERCULES INCORPORATED
    Inventors: Jianzhao WANG, Mohand MELBOUCI
  • Publication number: 20160215196
    Abstract: Disclosed herein is a water based High-Temperature High-Pressure (HTHP) fluid composition having a density of about 8.3 to about 21.0 ppg, comprising: (i) a brine based fluid; (ii) about 0.5 ppb to about 20 ppb of crosslinked polyvinylpyrrolidone (PVP); (iii) about 5 ppb to about 100 ppb of bridging agents selected from the group consisting of CaCO3 and sized salts; and (iv) optionally about 0 ppb to about 25 ppb of Fluids Loss Additives (FLA), wherein the crosslinked PVP is prepared by precipitation polymerization of vinylpyrrolidone (VP) in an organic solvent in the presence of a crosslinking agent and a free radical polymerization initiator, wherein the crosslinking agent is present in an amount of from about 0.1 wt. % to about 5.0 wt. % based on the weight of the vinylpyrrolidone. Also discloses a method of drilling and completing operations in a subterranean formation.
    Type: Application
    Filed: July 30, 2014
    Publication date: July 28, 2016
    Applicant: ISP INVESTMENTS INC.
    Inventors: Janice Jianzhao WANG, Mohand MELBOUCI, Cuiyue LEI, Osama M. MUSA
  • Publication number: 20160096908
    Abstract: The presently disclosed and/or claimed concept(s) relates generally to a composition comprising a low molecular weight graft polymer. The graft polymer is a graft homopolymer, copolymer or terpolymer. Additionally, the presently disclosed and/or claimed inventive concept(s) relates to a scale inhibitor composition comprising the low molecular weight graft polymer. Furthermore, the presently disclosed and/or claimed inventive concept(s) relates to a process for preventing the deposition of scale from water or aqueous solution and a method for scale inhibition treatment of an oil or gas production well by using the low molecular weight graft polymer. The scale inhibitor is low corrosive for application in the oilfield.
    Type: Application
    Filed: October 1, 2015
    Publication date: April 7, 2016
    Inventors: Janice Jianzhao WANG, Mohand Melbouci
  • Publication number: 20150368538
    Abstract: What is described herein is an aqueous high-temperature high-pressure (HTHP) stable drilling mud composition comprising (i) about 20 wt. % to about 80 wt. % of 0-60% w/w brine solution; (ii) about 0.1 wt. % to about 3 wt. % of butylated reaction product of p-cresol and dicyclopentadiene, a polymeric hindered phenol based antioxidant; (iii) about 0.1 wt. % to about 10.0 wt. % of triethanol amine, a chelating agent; (iv) (a) about 0.1 wt. % to about 10 wt. % of rheology modifier (RM); and/or (b) about 0.5 wt. % to about 30 wt. % of fluid loss additive (FLA); (v) about 20 wt. % to about 80 wt. % of weighting agent; (vi) about 0 wt. % to about 20 wt. % of drilling solid; and (vii) about 0 wt. % to about 50 wt % of water.
    Type: Application
    Filed: February 18, 2014
    Publication date: December 24, 2015
    Applicant: ISP INVESTMENTS INC.
    Inventors: Janice Jianzhao Wang, Jun ZHENG, Mohand MELBOUCI
  • Publication number: 20150315453
    Abstract: Disclosed are high temperature and high pressure fluid loss additives comprising: a) a humic substance, and b) a tetrapolymer prepared from polymerizing: i) acrylamide (AM), ii) 2-acrylamido-2-methylpropane sulfonic acid (AMPS), iii) 1-allyloxy-2-hydroxypropyl sulfonate, and iv) acrylic acid. The use of such high temperature and high pressure fluid loss additives in water-based drilling fluids in oil-field drilling operations is also disclosed.
    Type: Application
    Filed: May 5, 2015
    Publication date: November 5, 2015
    Inventors: Marc A. Alexandre, Gregory Victor Lifton, Mohand Melbouci, Janice Jianzhao Wang
  • Publication number: 20130324443
    Abstract: A salt-tolerant, thermally-stable rheology modifier and, in particular, a rheology modifier for applications in oil-field well-bore fluids. In accordance with one aspect, the rheology modifier comprises a terpolymer of acrylamide, 2-acrylamido-2-methyl-propanesulfonic acid (AMPS) and a long-chain alkyl acrylate wherein the terpolymer is prepared by dispersion polymerization.
    Type: Application
    Filed: October 25, 2011
    Publication date: December 5, 2013
    Applicant: ISP Investments Inc.
    Inventors: Janice Jianzhao Wang, Jun Zheng, David Farrar, OSama M. Musa
  • Patent number: 8436131
    Abstract: Disclosed are phosphinic acid compounds of formula I, II or III where R1 and R1? are for instance straight or branched C1-C50alkyl, R2 is for instance straight or branched C22-C50alkyl, R3 and R3? are for instance straight or branched C1-C50alkyl, R4 is for instance straight or branched C1-C50alkylene and m is from 2 t 100. Also disclosed are polyester compositions comprising the compounds of formula I, II and III.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: May 7, 2013
    Assignee: BASF SE
    Inventors: Paul Odorisio, Stephen M. Andrews, Thomas F. Thompson, Si Wu, Paragkumar Thanki, Deepak M. Rane, Delina Joseph, Jianzhao Wang
  • Publication number: 20130035451
    Abstract: Disclosed are phosphinic acid compounds of formula I, II or III where R1 and R1? are for instance straight or branched C1-C50alkyl, R2 is for instance straight or branched C22-C50alkyl, R3 and R3? are for instance straight or branched C1-C50alkyl, R4 is for instance straight or branched C1-C50alkylene and m is from 2 to 100. Also disclosed are polyester compositions comprising the compounds of formula I, II and III.
    Type: Application
    Filed: August 7, 2012
    Publication date: February 7, 2013
    Inventors: Paul Odorisio, Stephen M. Andrews, Thomas F. Thompson, Si Wu, Paragkumar Thanki, Deepak M. Rane, Delina Joseph, Jianzhao Wang
  • Patent number: 8258253
    Abstract: Disclosed is a method for increasing the solid state polymerization (SSP) rates of metal catalyzed polyesters. The method comprises in a first step, reacting a dicarboxylic acid or a C1-C4 dicarboxylic diester with a diol at a suitable temperature and pressure to effect esterification or transesterification to prepare a precondensate and in a second step, reacting the precondensate to effect polycondensation at a suitable temperature and pressure to prepare a high molecular weight polyester and in a third step, further increasing the molecular weight and viscosity of the polyester under SSP conditions of a suitable temperature and pressure, where a metal catalyst is added in the first step or in the second step as a reaction catalyst, and where a certain phosphinic acid compound is added in the first step, in the second step or just prior to the third step. The polyester product exhibits low aldehyde formation during melt processing steps as well as excellent color.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: September 4, 2012
    Assignee: BASF SE
    Inventors: Paul Odorisio, Stephen M. Andrews, Thomas F. Thompson, Si Wu, Paragkumar Thanki, Deepak M. Rane, Delina Joseph, Jianzhao Wang
  • Publication number: 20110306710
    Abstract: Disclosed is a method for increasing the solid state polymerization (SSP) rates of metal catalyzed polyesters. The method comprises in a first step, reacting a dicarboxylic acid or a C1-C4 dicarboxylic diester with a diol at a suitable temperature and pressure to effect esterification or transesterification to prepare a precondensate and in a second step, reacting the precondensate to effect polycondensation at a suitable temperature and pressure to prepare a high molecular weight polyester and in a third step, further increasing the molecular weight and viscosity of the polyester under SSP conditions of a suitable temperature and pressure, where a metal catalyst is added in the first step or in the second step as a reaction catalyst, and where a certain phosphinic acid compound is added in the first step, in the second step or just prior to the third step. The polyester product exhibits low aldehyde formation during melt processing steps as well as excellent color.
    Type: Application
    Filed: August 22, 2011
    Publication date: December 15, 2011
    Inventors: Paul Odorisio, Stephen M. Andrews, Thomas F. Thompson, Si Wu, Paragkumar Thanki, Deepak M. Rane, Delina Joseph, Jianzhao Wang