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).

  • Publication number: 20110214868
    Abstract: Treatment fluids comprising an aqueous base fluid, a viscosifying agent, and a compliant dual-functional additive are provided. The present invention provides methods of using the treatment fluids in subterranean formations. One example of a suitable method includes providing a fracturing fluid comprising an aqueous base fluid, a viscosifying agent, and a compliant dual-functional additive that acts as a fluid loss control agent and a breaker and introducing the fracturing fluid into at least a portion of a subterranean formation at a rate and pressure sufficient to create or enhance at least one or more fractures in the subterranean formation.
    Type: Application
    Filed: March 5, 2010
    Publication date: September 8, 2011
    Inventors: Gary P. Funkhouser, Feng Liang, Rajesh K. Saini, Jeremy Holtsclaw, Lewis R. Norman
  • Publication number: 20110214859
    Abstract: Treatment fluids comprising an aqueous base fluid, a compliant cellulosic viscosifying agent, a crosslinking agent, and a protective ligand are provided. The present invention provides methods of using the treatment fluids in subterranean formations. One example of a suitable method includes providing a fracturing fluid comprising an aqueous base fluid, a compliant cellulosic viscosifying agent, a crosslinking agent, and a protective ligand and introducing the fracturing fluid into at least a portion of a subterranean formation at a rate and pressure sufficient to create or enhance at least one or more fractures in the subterranean formation.
    Type: Application
    Filed: March 5, 2010
    Publication date: September 8, 2011
    Inventors: David M. Loveless, Phillip C. Harris, Rajesh K. Saini, Narongsak Tonmukayakul, Feng Liang
  • Patent number: 8012582
    Abstract: A method of making a proppant is provided, wherein the method includes the steps of: (a) forming a particulate comprising: (i) a binder; and (ii) a filler; and (b) sintering the particulate to form a sintered proppant, wherein the sintered proppant comprises: (i) at least 20 wt % of alkaline earth oxide equivalent; and (ii) at least 20 wt % of silicon dioxide equivalent. A method of treating (e.g., fracturing) a subterranean formation is provided, the method including the steps of: (a) suspending the sintered proppant in a treatment fluid; and (b) introducing the sintered proppant into the subterranean formation. The sintered proppant is made with a raw material selected from the group consisting of: unhydrated cement, hydrated cement (e.g., construction cement or concrete waste), kiln dust, fly ash, limestone, lime, talc, olivine, dolomite, clay that contains a substantial concentration of alkaline earth oxide equivalent, and any combination thereof in any proportion.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: September 6, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Hongyu Luo, Ashok Santra, Lewis R. Norman, Mark Parker, Ronald J. Powell, Rajesh K. Saini
  • Patent number: 7998906
    Abstract: Methods and compositions useful in treating subterranean formations, and more particularly, breaker compositions that may be useful in treating subterranean formations wherein synthetic polymers are used, are provided. Of the many methods and compositions provided herein, one composition comprises a source of hydrogen peroxide and an activator. One method comprises providing a polymer breaker composition comprising a source of hydrogen peroxide and an activator; introducing the polymer breaker composition into a well bore which penetrates a subterranean formation; allowing the activator to activate the source of hydrogen peroxide to create an oxidizing species; and allowing the oxidizing species to break synthetic polymers present in the subterranean formation.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: August 16, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Rajesh K. Saini, Michael W. Sanders, Fong-Fong Foo, Jeff L. Mundy
  • Publication number: 20110177985
    Abstract: Improved methods of oil and/or gas production by reducing the occurrence of water blocks and/or gas condensates in the treated portion of the formation are provided. In one embodiment, the methods comprise: providing a treatment fluid comprising: an aqueous base fluid, a friction reducing agent, and a quaternary ammonium surfactant described by at least the following formula: wherein R1 is either a saturated or unsaturated, branched or straight chain alkyl comprising about 12 carbons to about 22 carbons, and R2, R3 and R4 are independently selected from the group consisting of either a saturated or unsaturated, branched or straight chain alkyl or aryl comprising about 1 to about 14 carbons, and any combination thereof; and introducing the treatment fluid into at least a portion of a subterranean formation at a rate and pressure sufficient to create or enhance at least one or more fractures in the subterranean formation.
    Type: Application
    Filed: January 15, 2010
    Publication date: July 21, 2011
    Inventors: Rajesh K. Saini, Ian D. Robb
  • Publication number: 20110152133
    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: Application
    Filed: March 3, 2011
    Publication date: June 23, 2011
    Inventors: Michael W. Sanders, Jeffrey L. Mundy, Fong Fong Foo, Rajesh K. Saini
  • Publication number: 20110152132
    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: Application
    Filed: March 3, 2011
    Publication date: June 23, 2011
    Inventors: Michael W. Sanders, Jeffrey L. Mundy, Fong Fong Foo, Rajesh K. Saini
  • Patent number: 7928040
    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: January 23, 2007
    Date of Patent: April 19, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michael W. Sanders, Jeffrey L. Mundy, Fong Fong Foo, Rajesh K. Saini
  • Patent number: 7926568
    Abstract: Methods of acidizing subterranean formations or well bores, and more specifically, to acidizing systems involving acid-generating fluids that comprise acid-generating compounds and associated methods are provided. An example of a method of the present invention comprises: providing an acid-generating fluid that comprises an acid-generating compound; placing the acid-generating fluid into a well bore penetrating a subterranean formation; and allowing the acid-generating compound to produce an acid that then acidizes at least a portion of the subterranean formation or damage contained in the formation or well bore.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: April 19, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Rajesh K. Saini, Bradley L. Todd, David E. McMechan, Thomas D. Welton, Richard W. Pauls
  • Patent number: 7923417
    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: January 23, 2007
    Date of Patent: April 12, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michael W. Sanders, Jeffrey L. Mundy, Fong Fong Foo, Rajesh K. Saini
  • Patent number: 7921912
    Abstract: Methods of acidizing subterranean formations or well bores, and more specifically, to acidizing systems involving acid-generating fluids that comprise acid-generating compounds and associated methods are provided. An example is a method that comprises: providing an acid-generating fluid that comprises an acid-generating compound; placing the acid-generating fluid into a subterranean formation; and allowing an acid to generate from the acid-generating fluid.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: April 12, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Rajesh K. Saini, Bradley L. Todd, David E. McMechan, Thomas D. Welton, Richard W. Pauls
  • Publication number: 20110071056
    Abstract: Methods and compositions are provided that include degradable gemini surfactants including degradable gemini surfactants. Methods of use include subterranean operations, especially those involving the placement of resin systems, formation of emulsions (e.g., emulsified acids, emulsified fracturing fluids, drilling fluids, etc.), and in the formation of surfactant gelled fluids. Such treatments include, but are not limited to, drilling, stimulation treatments (e.g., fracturing treatments, acidizing treatments), and completion operations (e.g., sand control treatments like gravel packing).
    Type: Application
    Filed: September 24, 2009
    Publication date: March 24, 2011
    Inventors: Rajesh K Saini, Narongsak Tonmukayakul, Thomas D. Welton, Jason E. Bryant, Sherry G. Gaskins
  • Publication number: 20110067875
    Abstract: Of the many methods and compositions provided by this invention, one method a method of treating a subterranean formation, comprising: providing a treatment fluid 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, and acrylamide; and a crosslinking agent; and introducing the treatment fluid into a subterranean formation.
    Type: Application
    Filed: September 24, 2009
    Publication date: March 24, 2011
    Inventors: Gary P. Funkhouser, Rajesh K. Saini, Arnab Mukherjee
  • Publication number: 20110053810
    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: Application
    Filed: September 3, 2009
    Publication date: March 3, 2011
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Lewis R. Norman, Rajesh K. Saini
  • Publication number: 20100323929
    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: Application
    Filed: June 23, 2009
    Publication date: December 23, 2010
    Inventors: B. Raghava Reddy, Rajesh K. Saini, Sherry G. Gaskins
  • Patent number: 7833944
    Abstract: Methods and compositions including a method comprising: providing a treatment fluid comprising a carrier fluid and a solid particle comprising a crosslinked aliphatic polyester; and placing the treatment fluid into a subterranean formation.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: November 16, 2010
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Trinidad Munoz, Larry S. Eoff, Rajesh K. Saini
  • Publication number: 20100285999
    Abstract: The present invention provides treatment fluids useful for subterranean operations, and more particularly, in at least one aspect, a treatment fluid that comprises a carrier fluid and a cationic surfactant comprising a cationic head group, a polar group attached to the head group, and a hydrophobic group that is either a saturated or unsaturated, branched or straight chain alkyl, and comprises about 6 carbons to about 22 carbons. The treatment fluids of the present invention are at least suitable for use as a remedial treatment for the reduction of existing water blocks, oil blocks, and/or gas condensates.
    Type: Application
    Filed: May 8, 2009
    Publication date: November 11, 2010
    Inventors: Lewis R. Norman, Bobby E. Hall, Rajesh K. Saini, Anindya Ghosh
  • Patent number: 7825073
    Abstract: Methods are provided that include a method comprising providing a viscosified treatment fluid comprising a base fluid and a gelling agent that comprises a clarified xanthan; and placing the viscosified treatment fluid into at least a portion of a subterranean formation. In some embodiments, the method comprises placing the viscosified treatment fluid into at least a portion of a subterranean formation at a pressure sufficient to create or enhance at least one fracture in the subterranean formation. In some embodiments, the viscosified treatment fluid may also comprise a plurality of particulates. In some embodiments, the viscosified treatment fluids may be placed into at least a portion of a pipeline. Additional methods are also provided.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: November 2, 2010
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Thomas D. Welton, Michael W. Sanders, Jeffery L. Mundy, Sean R. Beach, Richard W. Pauls, Phillip C. Harris, Stanley J. Heath, David E. McMechan, Christina A. Parkinson, Harold G. Walters, Jason E. Bryant, Trinidad Munoz, Rajesh K. Saini, Bobby J. Burns
  • Publication number: 20100273685
    Abstract: Methods comprising: providing a degradable polymer within a portion of a subterranean formation; introducing a base solution into the portion of the subterranean formation, wherein the base solution comprises at least one base selected from the group consisting of: ammonium hydroxide, an alcoholic alkaline solution, and an alkaline amine solution, and derivatives thereof; and allowing the base solution to degrade the degradable polymer.
    Type: Application
    Filed: April 22, 2009
    Publication date: October 28, 2010
    Inventors: Rajesh K. Saini, Bradley L. Todd
  • Patent number: 7816305
    Abstract: Certain reversible surfactants, treatment fluids, and methods of use employing such reversible surfactants in subterranean applications are provided. In one embodiment, the methods comprise: providing a treatment fluid comprising a base fluid and a reversible surfactant that comprises a hydrophobic portion and a nitrogen-containing functional group that is capable of reacting with carbon dioxide to form a salt; and introducing the treatment fluid into at least a portion of a subterranean formation.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: October 19, 2010
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Rajesh K. Saini, Narongsak Tonmukayakul