Patents by Inventor B. Raghava Reddy

B. Raghava Reddy 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: 20190153292
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 23, 2019
    Inventor: B. Raghava Reddy
  • Publication number: 20190153293
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 23, 2019
    Inventor: B. Raghava Reddy
  • Patent number: 10294408
    Abstract: Some embodiments herein described relate to method comprising: providing a portion of a subterranean formation comprising unconsolidated particulates; introducing a polymerizable aqueous consolidation composition into the portion of the subterranean formation so as to contact the unconsolidated particulates with the polymerizable aqueous consolidation composition, thereby creating coated, unconsolidated particulates; introducing a substantially solids-free, aqueous flush fluid into the portion of the subterranean formation so as to remove the polymerizable aqueous consolidation composition from interstitial spaces between the coated, unconsolidated particulates; introducing a water-soluble polymerization initiator composition into the portion of the subterranean formation so as to contact the coated, unconsolidated particulates; and consolidating the coated, unconsolidated particulates in the portion of the subterranean formation.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: May 21, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: B. Raghava Reddy, Feng Liang, Philip D. Nguyen
  • Patent number: 10287481
    Abstract: This document relates to settable, non-hydraulic foamed cement compositions comprising nitrogen gas-generating compositions used for loss circulation control.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: May 14, 2019
    Assignee: Saudi Arabian Oil Company
    Inventor: B. Raghava Reddy
  • Patent number: 10287479
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: May 14, 2019
    Assignee: Saudi Arabian Oil Company
    Inventor: B. Raghava Reddy
  • Patent number: 10287480
    Abstract: This document relates to settable, non-hydraulic foamed cement compositions comprising nitrogen gas-generating compositions used for loss circulation control.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: May 14, 2019
    Assignee: SAUDI ARABIAN OIL COMPANY
    Inventor: B. Raghava Reddy
  • Publication number: 20190112519
    Abstract: A method for formulating a hydraulic fracturing fluid composition with increased viscosity and resistance to degradation at increased temperature and pressure. The method includes preparing an alkanolamine borate formulation compatible for mixing with a hydraulic fracturing fluid comprising polysaccharides; preparing the hydraulic fracturing fluid comprising polysaccharides; and mixing the alkanolamine borate formulation with the hydraulic fracturing fluid, such that the alkanolamine borate formulation causes crosslinking of the hydraulic fracturing fluid.
    Type: Application
    Filed: October 16, 2017
    Publication date: April 18, 2019
    Applicant: Saudi Arabian Oil Company
    Inventors: B. Raghava Reddy, Feng Liang, Leiming Li
  • Patent number: 10259985
    Abstract: This document relates to settable, hydraulic, non-Portland foamed cement compositions comprising nitrogen gas-generating compositions used for loss circulation control.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: April 16, 2019
    Assignee: Saudi Arabian Oil Company
    Inventor: B. Raghava Reddy
  • Patent number: 10246626
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: April 2, 2019
    Assignee: Saudi Arabian Oil Company
    Inventor: B. Raghava Reddy
  • Publication number: 20190093005
    Abstract: A fracturing fluid including a mixture of an aqueous copolymer composition including a copolymer, the copolymer having 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, and acrylic acid monomer units, or a salt thereof, and a crosslinker. The crosslinker includes a metal, and the weight ratio of the metal to the copolymer is in a range of 0.01 to 0.08. Treating a subterranean formation includes introducing the fracturing fluid into a subterranean formation, and crosslinking the fracturing fluid in the subterranean formation to yield a crosslinked fracturing fluid. The crosslinked fracturing fluid has a viscosity of at least 500 cP for at least 80 minutes when the gel is subjected to a shear rate of 40 s?1 at a temperature in a range of 300° F. to 400° F.
    Type: Application
    Filed: November 21, 2018
    Publication date: March 28, 2019
    Applicant: Saudi Arabian Oil Company
    Inventors: Feng Liang, B. Raghava Reddy, Leiming Li, Ghaithan A. Al-Muntasheri
  • Patent number: 10233379
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: March 19, 2019
    Assignee: Saudi Arabian Oil Company
    Inventor: B. Raghava Reddy
  • Patent number: 10202537
    Abstract: A composition forming a free-flowing cement additive, the composition comprising a high viscosity elastomer, the high viscosity elastomer having a viscosity between 50,000 cP and 300,000 cP at room temperature; and an inert support, where the high viscosity elastomer is deposited on the inert support.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: February 12, 2019
    Assignee: SAUDI ARABIAN OIL COMPANY
    Inventor: B. Raghava Reddy
  • Publication number: 20190023969
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Application
    Filed: May 18, 2018
    Publication date: January 24, 2019
    Inventor: B. Raghava Reddy
  • Publication number: 20190023967
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Application
    Filed: April 25, 2018
    Publication date: January 24, 2019
    Inventor: B. Raghava Reddy
  • Publication number: 20190023968
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Application
    Filed: May 3, 2018
    Publication date: January 24, 2019
    Inventor: B. Raghava Reddy
  • Publication number: 20190023966
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Application
    Filed: October 19, 2017
    Publication date: January 24, 2019
    Inventor: B. Raghava Reddy
  • Publication number: 20190023971
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Application
    Filed: May 18, 2018
    Publication date: January 24, 2019
    Inventor: B. Raghava Reddy
  • Publication number: 20190023970
    Abstract: Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.
    Type: Application
    Filed: May 18, 2018
    Publication date: January 24, 2019
    Inventor: B. Raghava Reddy
  • Publication number: 20190016946
    Abstract: A fracturing fluid including a mixture of an aqueous copolymer composition including a copolymer, the copolymer having 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, and acrylic acid monomer units, or a salt thereof, and a crosslinker. The crosslinker includes a metal, and the weight ratio of the metal to the copolymer is in a range of 0.01 to 0.08. Treating a subterranean formation includes introducing the fracturing fluid into a subterranean formation, and crosslinking the fracturing fluid in the subterranean formation to yield a crosslinked fracturing fluid. The crosslinked fracturing fluid has a viscosity of at least 500 cP for at least 80 minutes when the gel is subjected to a shear rate of 40 s?1 at a temperature in a range of 300° F. to 400° F.
    Type: Application
    Filed: September 18, 2018
    Publication date: January 17, 2019
    Applicant: Saudi Arabian Oil Company
    Inventors: Feng Liang, B. Raghava Reddy, Leiming Li, Ghaithan A. Al-Muntasheri
  • Publication number: 20190010377
    Abstract: A nanosilica containing fluid system for shale stabilization in a shale formation. The nanosilica containing fluid system comprising a functionalized nanosilica composition operable to react with shale at the surface of the shale formation to form a barrier on the shale formation. The functionalized nanosilica composition comprising a nanosilica particle, the nanosilica particle having a mean diameter, and a functionalization compound, the functionalization compound appended to the surface of the nanosilica particle. And an aqueous-based fluid, the aqueous-based fluid operable to carry the functionalized nanosilica composition into the shale formation. The functionalization compound is an amino silane. The aqueous-based fluid is selected from the group consisting of water, deionized water, sea water, brine, and combinations thereof.
    Type: Application
    Filed: August 31, 2018
    Publication date: January 10, 2019
    Applicant: Saudi Arabian Oil Company
    Inventors: Peter J. BOUL, B. Raghava REDDY, Carl THAEMLITZ