Patents by Inventor Rajesh K. Saini

Rajesh K. Saini 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: 8975217
    Abstract: Methods are provided for treating a portion of a well. The method according to this aspect comprises the steps of: (A) forming a treatment fluid, the treatment fluid comprising: (i) water; (ii) a water-soluble polymer; (iii) a complexed metal cation that: (a) has a valence state of at least three; and (b) is capable of cross-linking the water-soluble polymer; and (iv) an aromatic compound that is capable of dissolving, melting, or chemically decomposing, dissociating, or reacting, to form a chelating agent, wherein the chelating agent comprising vicinal substituents containing donor heteroatoms, and wherein the chelating agent is capable of chelating the metal cation; and (B) introducing the treatment fluid into the well.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: March 10, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: B. Raghava Reddy, Rajesh K. Saini, Sherry G. Gaskins
  • Patent number: 8936086
    Abstract: Method including the steps of providing a treatment fluid that comprises a base fluid and polymeric particulates and introducing the treatment fluid into a subterranean formation having a temperature above about 65° C. The polymeric particulates comprise a degradable polymer and a plasticizer and exhibit a Tg above about ?15° C. When the polymeric particulates are placed into a subterranean formation having a temperature above about 65° C. they transform from rigid form to malleable form and are able to provide fluid loss, seal the rock surfaces for fluid diversion, or plug an area along the annulus of a well bore. The malleable particulates then degrade over time in the subterranean formation.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: January 20, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Feng Liang, Bradley L. Todd, Thomas D. Welton, Rajesh K. Saini
  • Patent number: 8815784
    Abstract: The present invention relates to synthetic polymers having high molecular weights and low polydispersities and methods of synthesis. In one embodiment of the present invention, a polymer includes a polyacrylate polymer obtained from a polymerization reaction in which the polyacrylate polymer has a molecular weight of at least about 500,000 and a polydispersity index of about 1.25 or less.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: August 26, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: James W. Ogle, Charm Boontheung, Rajesh K. Saini
  • Patent number: 8815783
    Abstract: The present invention relates to synthetic polymers having high molecular weight and low polydispersities, and methods of synthesis thereof. One embodiment of the present invention provides a method of polymerizing that includes dissolving acrylate monomers in a fluid media having an olefin-containing polyalcohol amide surfactant; and initiating a polymerization reaction of the acrylate monomers with a polymerization initiator to produce a polymer having a molecular weight of at least about 500,000 and a polydispersity index of about 1.25 or less.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: August 26, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: James W. Ogle, Charm Boontheung, Rajesh K. Saini
  • Patent number: 8772205
    Abstract: Of the many embodiments presented herein, one is a subterranean treatment fluid comprising: an aqueous fluid; and a water-soluble degradable synthetic vinyl polymer having a labile link in its backbone. Also provided in one instance is a water-soluble degradable synthetic vinyl polymer with labile group in its backbone made by a redox polymerization, the redox polymerization reaction comprising these reactants: a macroinitiator that comprises a labile link, an oxidizing metal ion, and a vinyl monomer.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: July 8, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Alexander Bismarck, Emilia M. Kot, Rajesh K. Saini
  • Patent number: 8772204
    Abstract: The present invention relates to fluids useful for subterranean operations, and more particularly, to fluorosurfactants useful for the reduction of water blocks, gas blocks, and/or gas condensates and their associated treatment fluids and methods. Provided is a method of treating a subterranean formation. The Method may comprise contacting the subterranean formation with a fluorosurfactant. The fluorosurfactant may comprise an amine group, wherein the amine group comprises at least one substituent selected from the group consisting of a fluoroalkyl group, a fluoroalkenyl group, and combinations thereof, wherein the at least one substituent comprises about 3 carbons to about 22 carbons. Also provided are polymeric surfactants and treatment fluids that comprise fluorosurfactants.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: July 8, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Lewis R. Norman, Rajesh K. Saini
  • Patent number: 8739876
    Abstract: Methods of using nanohybrid-stabilized emulsions in a well are provided that include the steps of: (a) forming an emulsion comprising: (i) a nanohybrid; (ii) water or an aqueous solution; and (iii) a water-immiscible liquid; (b) introducing a well fluid comprising the emulsion into a well; and (c) after the step of introducing, modifying the nanohybrid to break the emulsion in the well. The methods can be used in various applications, such as in drilling, completion, or intervention operations.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: June 3, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Rajesh K. Saini, Lewis R. Norman
  • Patent number: 8720555
    Abstract: A method for diverting fluids across a perforation tunnel in high-rate water pack operations may include providing a wellbore extending into a subterranean formation, wherein a perforation tunnel provides a fluid connection between the wellbore and the subterranean formation; providing a diverting particulate that comprises a degradable plasticized polymer coating on a particulate; placing the diverting particulate into the perforation tunnel, wherein the step of placing the diverting particulate forms a particulate pack within the subterranean formation and the perforation tunnel; allowing the degradable plasticized polymer coating to deform and fill the interstitial spaces within the particulate pack in the perforation tunnel such that the fluid conductivity between the wellbore and the subterranean formation is substantially blocked; and allowing the plasticized polymer coating to degrade over time thereby substantially restoring the fluid conductivity between the wellbore and the subterranean formation.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: May 13, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Feng Liang, Bradley L. Todd, Rajesh K. Saini, Stanley J. Heath
  • Patent number: 8669212
    Abstract: The present invention relates to fluids useful for subterranean operations, and more particularly, to fluorosurfactants useful for the reduction of water blocks, gas blocks, and/or gas condensates and their associated treatment fluids and methods. Provided is a method of treating a subterranean formation. The method may comprise contacting the subterranean formation with a fluorosurfactant. The fluorosurfactant may comprise an amine group, wherein the amine group comprises at least one substituent selected from the group consisting of a fluoroalkyl group, a fluoroalkenyl group, and combinations thereof, wherein the at least one substituent comprises about 3 carbons to about 22 carbons. Also provided are polymeric surfactants and treatment fluids that comprise fluorosurfactants.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: March 11, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Lewis R. Norman, Rajesh K. Saini
  • Patent number: 8545935
    Abstract: Methods of creating particulates coated with acid-releasing degradable material comprising the steps of: combining an acid-releasing degradable material with a solvent or a plasticizer to create a coating solution; providing a first flowing stream comprising the coating solution; providing a second flowing stream comprising particulates; and, combining the first and second flowing streams to create a third flowing stream comprising particulates coated with the coating solution. Wherein the acid-releasing degradable material comprises at least one acid-releasing degradable material selected from the group consisting of: poly(orthoester); a lactide, a poly(lactide); a glycolide; a poly(glycolide); a poly(?-caprolactone); a poly(hydroxybutyrate); a substantially water insoluble anhydride; a poly(anhydride); a poly(amino acid); a copolymer of two or more of the above-listed compounds; and any combination thereof.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: October 1, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Rajesh K. Saini, Bradley L. Todd
  • Patent number: 8541051
    Abstract: The present invention relates to methods and compositions for treating subterranean formations, and more specifically, to improved methods and compositions for degrading filter cake deposited on a subterranean formation. One embodiment of the present invention provides a method of creating particulates coated with acid-releasing degradable material on-the-fly comprising the step of: combining an acid-releasing degradable material with a solvent or a plasticizer to create a coating solution; and, coating the coating solution onto a particulate on-the-fly to create coated particulates. Another embodiment of the present invention provides a gravel pack comprising gravel particles coated on-the-fly with an acid-releasing degradable material.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: September 24, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Rajesh K. Saini, Bradley L. Todd
  • Publication number: 20130233546
    Abstract: When performing subterranean treatment operations, it can be desirable to temporarily divert or block fluid flow by forming a degradable fluid seal. Methods for forming a degradable fluid seal can comprise: providing a sealing composition comprising: a degradable polymer, and a water-soluble material comprising a first portion and a second portion of rigid particulates, each portion having a sealing time and a particulate size distribution associated therewith, the particulate size distributions of the first portion and the second portion differing from one another; determining an amount of the first portion relative to the second portion needed to produce a degradable fluid seal having a desired sealing time that is different than that of the sealing time of either the first portion or the second portion; introducing the sealing composition into a subterranean formation; and allowing the sealing composition to form a degradable fluid seal in the subterranean formation.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 12, 2013
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Feng Liang, Rajesh K. Saini, Bradley L. Todd, Stanley J. Heath
  • Publication number: 20130168095
    Abstract: A composition of a treatment fluid and method for treating a zone of well. In an embodiment, the composition includes at least: (i) an aqueous phase; (ii) at least 5 ppm iron ion in the aqueous phase; (iii) a source of at least 5 ppm iodide ion to be dissolved in the aqueous phase; (iv) a water-soluble viscosity-increasing agent dissolved in the aqueous phase; and (v) a source of an oxidative breaker to be dissolved in the aqueous phase. In an embodiment, a method of treating a zone of a subterranean formation of a well includes at least the steps of: (a) forming a treatment fluid according to the composition; and (b) introducing the treatment fluid into the zone.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 4, 2013
    Applicant: Halliburton Energy Services, Inc.
    Inventors: David M. Loveless, Lucas K. Fontenelle, Rajesh K. Saini
  • Publication number: 20130157902
    Abstract: The present invention relates to synthetic polymers having high molecular weights and low polydispersities and methods of synthesis. In one embodiment of the present invention, a polymer includes a polyacrylate polymer obtained from a polymerization reaction in which the polyacrylate polymer has a molecular weight of at least about 500,000 and a polydispersity index of about 1.25 or less.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 20, 2013
    Applicant: Halliburton Energy Services, Inc.
    Inventors: James W. Ogle, Charm Boontheung, Rajesh K. Saini
  • Publication number: 20130157905
    Abstract: The present invention relates to environmentally friendly compositions and methods for removing or suppressing metal ions in waters, flowback waters, and produced waters to make such waters suitable for subsequent use in oil-field applications and for delinking metal cross-linked gelling agents. One embodiment of the present invention provides a method of providing a competitive binder and allowing the competitive binder to interact with interfering metal ions in a flowback fluid to suppress or remove interfering metal ions.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 20, 2013
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Rajesh K. Saini, Jeremy Holtsclaw, David M. Loveless, Lucas K. Fontenelle, Prajakta R. Patil, Ramesh Muthusamy
  • Publication number: 20130157901
    Abstract: The present invention relates to synthetic polymers having high molecular weight and low polydispersities, and methods of synthesis thereof. One embodiment of the present invention provides a method of polymerizing that includes dissolving acrylate monomers in a fluid media having an olefin-containing polyalcohol amide surfactant; and initiating a polymerization reaction of the acrylate monomers with a polymerization initiator to produce a polymer having a molecular weight of at least about 500,000 and a polydispersity index of about 1.25 or less.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 20, 2013
    Applicant: Halliburton Energy Services, Inc.
    Inventors: James W. Ogle, Charm Boontheung, Rajesh K. Saini
  • Patent number: 8450252
    Abstract: Subterranean treatment fluids comprising: an aqueous base fluid and a reaction product of a gelling agent comprising a copolymer or salt thereof comprising N-[tris(hydroxymethyl)methyl]acrylamide, 2-acrylamido-2-methylpropanesulfonic acid or a salt thereof, acrylamide; and a crosslinking agent. Such treatment fluids are particularly well-suited for high temperature applications. In particular, they are suited for subterranean temperatures up to about 400° F.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: May 28, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Gary P. Funkhouser, Rajesh K. Saini, Arnab Mukherjee
  • Patent number: 8424603
    Abstract: A method of treating a subterranean formation comprises providing a treatment fluid comprising: an aqueous fluid; a gelling agent, and a multifunctional boronic crosslinker comprising two or more boronic functional groups; and introducing the viscosified fluid into a subterranean formation.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: April 23, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: David M. Loveless, Rajesh K. Saini, Jimmie D. Weaver
  • Patent number: 8415278
    Abstract: A composition for treating a portion of a wellbore or a portion of a subterranean formation is provided, the composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted to be within an appropriate range for the type of activator. A method for treating a portion of a wellbore or a portion of a subterranean formation, the method comprising the steps of: forming or providing a composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted within an appropriate range for the type of activator; and introducing the composition through a wellbore to treat a portion of a wellbore or a portion of a subterranean formation. The activator can be a water-soluble alkanoyl-donor compound or a chelated transition metal. Preferably, the composition further comprises an iron chelating agent.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: April 9, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michael W. Sanders, Jeffrey L. Mundy, Fong Fong Foo, Rajesh K. Saini
  • Publication number: 20130081801
    Abstract: The present invention relates to the use of degradable coatings suitable for use on downhole tools. In particular, the present invention relates to pliable coatings for use on downhole tools that have been designed to be able to resist flaking or breaking off of the tool in response to a physical shock. Some embodiments of the present invention provide methods of reacting lactic acid, glycolic acid, or a combination thereof in a polymerization reaction to form a degradable polymer; combining the degradable polymer and a plasticizer to form a coating composition; applying the coating composition to a downhole tool; placing the coated downhole tool into a portion of a subterranean formation; and, hydrolyzing the degradable polymer of the coating composition to release an acid and degrade the coating.
    Type: Application
    Filed: October 4, 2011
    Publication date: April 4, 2013
    Inventors: Feng Liang, Bradley L. Todd, Thomas D. Welton, Rajesh K. Saini