Patents by Inventor Gaurav Agrawal

Gaurav Agrawal 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: 20170190622
    Abstract: A formulation for use as a lost circulation preventive material is a cement-forming aqueous fluid comprising water, a viscoelastic surfactant (VES), a monovalent or multivalent salt, a magnesium powder, a retarder, a weighting material, and a dispersant. The formulation is used in a method of drilling into a subterranean formation that includes introducing into a wellbore passing at least partially through the subterranean formation the cement-forming aqueous fluid, and further increasing the viscosity of the aqueous fluid with the VES; where the monovalent salt is present in an amount effective to pseudo-crosslink the elongated VES micelles to further increase the viscosity of fluid. The formulation further forms a cement by reacting the magnesium powder and the water which reaction is retarded by the retarder. The water may be saline water. When the fluid density is greater than 14 pounds per gallon, a dispersant is required, such as a sulfonated copolymer.
    Type: Application
    Filed: March 15, 2017
    Publication date: July 6, 2017
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: PRAHLAD KUMAR YADAV, Pranjal Sarmah, Gaurav Agrawal, Tianping Huang
  • Patent number: 9695351
    Abstract: A formulation for use as a lost circulation preventive material is a cement-forming aqueous fluid comprising water, a viscoelastic surfactant (VES), a monovalent or multivalent salt, a magnesium powder, a retarder, a weighting material, and a dispersant. The formulation is used in a method of drilling into a subterranean formation that includes introducing into a wellbore passing at least partially through the subterranean formation the cement-forming aqueous fluid, and further increasing the viscosity of the aqueous fluid with the VES, where the monovalent salt is present in an amount effective to pseudo-crosslink the elongated VES micelles to further increase the viscosity of fluid. The formulation further forms a cement by reacting the magnesium powder and the water which reaction is retarded by the retarder. The water may be saline water. When the fluid density is greater than 14 pounds per gallon, a dispersant is required, such as a sulfonated copolymer.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: July 4, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Prahlad Kumar Yadav, Pranjal Sarmah, Gaurav Agrawal, Tianping Huang
  • Patent number: 9695664
    Abstract: A system for high pressure proppant blending includes at least one high pressure pump coupled to a high pressure flow path, the high pressure flow path entering a wellhead. The system further includes a chamber storing a mixture of proppant and compressed gas. The system also includes a high pressure nozzle. An output of the high pressure nozzle is coupled to the high pressure flow path between the at least one high pressure pump and the wellhead. The chamber is coupled to an input of the high pressure nozzle.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: July 4, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Andres Rodela, Blake Burnette, D. V. Satyanarayana Gupta, William McCarty, Gaurav Agrawal
  • Patent number: 9682425
    Abstract: A metallic powder is disclosed. The metallic powder includes a plurality of metallic powder particles. Each powder particle includes a particle core. The particle core includes a core material comprising Mg, Al, Zn or Mn, or a combination thereof, having a melting temperature (TP). Each powder particle also includes a metallic coating layer disposed on the particle core. The metallic coating layer includes a metallic coating material having a melting temperature (TC). The powder particles are configured for solid-state sintering to one another at a predetermined sintering temperature (TS), and TS is less than TP and TC.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: June 20, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Zhiyue Xu, Gaurav Agrawal, Bobby Salinas
  • Patent number: 9683163
    Abstract: Removing an asphaltene particle from a substrate includes contacting a silicate nanoparticle with a chemical group to form a functionalized silicate nanoparticle, the chemical group includes a first portion; and a second portion comprising an aromatic moiety or a nonaromatic moiety, the first portion being bonded to the silicate nanoparticle; contacting the asphaltene particle with the functionalized silicate nanoparticle, the asphaltene particle being disposed on the substrate; interposing the functionalized silicate nanoparticle between the asphaltene particle and the substrate; and separating the asphaltene particle from the substrate with the functionalized silicate nanoparticle to remove the asphaltene particle. A composition includes a functionalized silicate nanoparticle comprising a reaction product of a silicate nanoparticle and a functionalization compound; and a fluid.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: June 20, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Oleg A. Mazyar, Valery N. Khabashesku, Soma Chakraborty, Gaurav Agrawal, Toby D. Hain
  • Publication number: 20170167246
    Abstract: A system and method for estimating a fluid loss in a borehole while drilling are disclosed. A drill string disposed in the borehole. A first sensor of the drill string is configured to obtain a first fluid parameter measurement at a first location along the drill string. A second sensor of the drill string is configured to obtain a second fluid parameter measurement at a second location axially separated from the first location. A processor estimates a fluid loss along the drill string using the first fluid parameter measurement and the second fluid parameter measurement performs an action in response to the estimated fluid loss.
    Type: Application
    Filed: December 14, 2016
    Publication date: June 15, 2017
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Naeem-Ur-Rehman Minhas, Hasan Kesserwan, Gaurav Agrawal, Asok J. Nair
  • Patent number: 9670065
    Abstract: Coated diamond particles have solid diamond cores and at least one graphene layer. Methods of forming coated diamond particles include coating diamond particles with a charged species and coating the diamond particles with a graphene layer. A composition includes a substance and a plurality of coated diamond particles dispersed within the substance. An intermediate structure includes a hard polycrystalline material comprising a first plurality of diamond particles and a second plurality of diamond particles. The first plurality of diamond particles and the second plurality of diamond particles are interspersed. A method of forming a polycrystalline compact includes catalyzing the formation of inter-granular bonds between adjacent particles of a plurality of diamond particles having at least one graphene layer.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: June 6, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Soma Chakraborty, Anthony A. DiGiovanni, Gaurav Agrawal, Danny E. Scott, Vipul Mathur
  • Publication number: 20170138191
    Abstract: A system and method for developing a wellbore is disclosed. A sample is obtained from the wellbore during a drilling operation. A first test device tests the sample to obtain a first measurement of a parameter of the sample. The first measurement of the parameter is input to a second test of the sample performed at a second test device to obtain a second measurement of the parameter. A parameter of the developing operation is altered based on the second measurement of the parameter.
    Type: Application
    Filed: November 17, 2015
    Publication date: May 18, 2017
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Umesh Santosh Patil, Gaurav Agrawal
  • Publication number: 20170131192
    Abstract: Methods and apparatus for evaluation of an earth formation including evaluating a core sample obtained from the formation. Methods include using a change in measurements of at least one stress parameter of the core sample, such as radial strain, axial stress, and acoustic emission counts, over time responsive to an applied stress to estimate imminent rock failure in the core sample. This may include estimating the imminent rock failure using differences between portions of a curve generated based on the measurements.
    Type: Application
    Filed: November 4, 2016
    Publication date: May 11, 2017
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Hector Gonzalez PEREZ, Guodong JIN, Gaurav AGRAWAL, Syed Shujath ALI, Ali Al DHAMEN
  • Patent number: 9643144
    Abstract: A method of making a nanostructure-reinforced composite comprises providing matrix particles in a reactor; fluidizing the matrix particles; introducing a nanostructure material into the reactor; homogeneously dispersing the nanostructure material; uniformly depositing the nanostructure material on the matrix particles to form a composite powder; generating a nanostructure on the matrix particles from the nanostructure material; and processing the composite powder to form the nanostructure-reinforced composite having a matrix formed from the matrix particles. The nanostructures are evenly distributed in the matrix of the nanostructure-reinforced composite.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: May 9, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Zhiyue Xu, Gaurav Agrawal
  • Patent number: 9616121
    Abstract: In alternative embodiments, the invention provides a “triple combination” therapy for treating, ameliorating and preventing Crohn's Disease (or Crohn syndrome, terminal or distal ileitis or regional enteritis) or related disorders and conditions in mammals, such as paratuberculosis in mammals, or Johne's disease, including genetically-predisposed and chronic disorders, where the microbial or bacterial flora of the bowel is at least one causative or symptom-producing factor; and compositions for practicing same. In alternative embodiments, methods and compositions of the invention comprise or comprise use of therapies, medications, formulations and pharmaceuticals comprising active agents that can suppress or eradicate the microbiota super-infection that causes Crohn's Disease or paratuberculosis infection in mammals.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: April 11, 2017
    Assignee: Center for Digestive Diseases
    Inventor: Gaurav Agrawal
  • Patent number: 9611699
    Abstract: Cutting elements for earth-boring tools may include a substrate and a polycrystalline diamond table secured to the substrate. At least a portion of the polycrystalline diamond table may be formed from a plurality of core particles comprising a diamond material and having an average diameter of between 1 ?m and 500 ?m. A coating material may be adhered to and covering at least a portion of an outer surface of each core particle of the plurality of core particles, the coating material being an amine terminated group. A plurality of nanoparticles selected from the group of carbon nanotubes, nanographite, nanographene, non-diamond carbon allotropes, surface modified nanodiamond, nanoscale particles of BeO, and nanoscale particles comprising a Group VIIIA element may be adhered to the coating material.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: April 4, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Soma Chakraborty, Oleksandr V. Kuznetsov, Gaurav Agrawal
  • Publication number: 20170058614
    Abstract: Methods of fabricating polycrystalline diamond include subjecting a particle mixture to high pressure and high temperature (HPHT) conditions to form inter-granular diamond-to-diamond bonds. Before being subjected to HPHT conditions, the particle mixture includes a plurality of non-diamond nanoparticles, diamond nanoparticles, and diamond grit. The non-diamond nanoparticles includes carbon-free cores and at least one functional group attached to the cores. Cutting elements for use in an earth-boring tool include a polycrystalline diamond material formed by such processes. Earth-boring tools include such cutting elements.
    Type: Application
    Filed: November 3, 2016
    Publication date: March 2, 2017
    Inventors: Soma Chakraborty, Anthony A. DiGiovanni, Gaurav Agrawal
  • Patent number: 9580658
    Abstract: A method of obtaining a hydrocarbon material from a mined material comprises forming a colloidal dispersion comprising solid particles and a carrier fluid. The colloidal dispersion is mixed with a mined, hydrocarbon-containing material to form an emulsion stabilized by the solid particles. At least one property of the emulsion is modified to destabilize the emulsion. Additional methods of obtaining a hydrocarbon material from a mined material, and a stabilized emulsion are also described.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: February 28, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Oleksandr V. Kuznetsov, Gaurav Agrawal, Valery N. Khabashesku, Devesh K. Agrawal
  • Publication number: 20170050159
    Abstract: A method of making a nanostructure-reinforced composite comprises providing matrix particles in a reactor; fluidizing the matrix particles; introducing a nanostructure material into the reactor; homogeneously dispersing the nanostructure material; uniformly depositing the nanostructure material on the matrix particles to form a composite powder; generating a nanostructure on the matrix particles from the nanostructure material; and processing the composite powder to form the nanostructure-reinforced composite having a matrix formed from the matrix particles. The nanostructures are evenly distributed in the matrix of the nanostructure-reinforced composite.
    Type: Application
    Filed: November 3, 2016
    Publication date: February 23, 2017
    Applicant: Baker Hughes Incorporated
    Inventors: Zhiyue Xu, Gaurav Agrawal
  • Publication number: 20160376492
    Abstract: Suspensions comprising polyhedral oligomeric silsesquioxane nanoparticles and at least one carrier fluid. The polyhedral oligomeric silsesquioxane may include functional groups and the suspension may further comprise carbon-based nanoparticles and silica nanoparticles. Methods of recovering hydrocarbons from a subterranean formation using the suspension are disclosed. The method comprises contacting hydrocarbons with the suspension to form an emulsion stabilized by the polyhedral oligomeric silsesquioxane nanoparticles.
    Type: Application
    Filed: October 21, 2014
    Publication date: December 29, 2016
    Inventors: Soma Chakraborty, Gaurav Agrawal, Devesh Kumar Agrawal, Valery N. Khabashesku
  • Publication number: 20160355723
    Abstract: A formulation for use as a lost circulation preventive material is a cement-forming aqueous fluid comprising water, a viscoelastic surfactant (VES), a monovalent or multivalent salt, a magnesium powder, a retarder, a weighting material, and a dispersant. The formulation is used in a method of drilling into a subterranean formation that includes introducing into a wellbore passing at least partially through the subterranean formation the cement-forming aqueous fluid, and further increasing the viscosity of the aqueous fluid with the VES, where the monovalent salt is present in an amount effective to pseudo-crosslink the elongated VES micelles to further increase the viscosity of fluid. The formulation further forms a cement by reacting the magnesium powder and the water which reaction is retarded by the retarder. The water may be saline water. When the fluid density is greater than 14 pounds per gallon, a dispersant is required, such as a sulfonated copolymer.
    Type: Application
    Filed: August 25, 2015
    Publication date: December 8, 2016
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: PRAHLAD KUMAR YADAV, Pranjal Sarmah, Gaurav Agrawal, Tianping Huang
  • Publication number: 20160356107
    Abstract: A formulation for use as a lost circulation preventive material is a cement-forming aqueous fluid comprising water, at least one viscoelastic surfactant (VES), at least one monovalent or multivalent salt, at least one magnesium powder, and at least one retarder. The formulation is used in a method of drilling into a subterranean formation that includes introducing into a wellbore passing at least partially through the subterranean formation the cement-forming aqueous fluid, and further increasing the viscosity of the aqueous fluid by the action of the VES forming elongated micelles; where the at least one monovalent salt is present in an amount effective to pseudo-crosslink the elongated VES micelles to further increase the viscosity of the aqueous fluid. The formulation further forms a cement by reacting the at least one magnesium powder and the water which reaction is retarded by the retarder. The water may be saline water.
    Type: Application
    Filed: June 3, 2015
    Publication date: December 8, 2016
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: PRANJAL SARMAH, PRAHLAD KUMAR YADAV, GAURAV AGRAWAL, TIANPING HUANG
  • Patent number: 9499883
    Abstract: Methods of fabricating polycrystalline diamond include functionalizing surfaces of carbon-free nanoparticles with one or more functional groups, combining the functionalized nanoparticles with diamond nanoparticles and diamond grit to form a particle mixture, and subjecting the particle mixture to high pressure and high temperature (HPHT) conditions to form inter-granular bonds between the diamond nanoparticles and the diamond grit. Cutting elements for use in an earth-boring tool include a polycrystalline diamond material formed by such processes. Earth-boring tools include such cutting elements.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: November 22, 2016
    Assignee: Baker Hughes Incorporated
    Inventors: Soma Chakraborty, Anthony A. DiGiovanni, Gaurav Agrawal
  • Publication number: 20160267156
    Abstract: A qualifying system receives a channel activity record from one of a plurality of different external systems, over one of a plurality of different communication channels. It accesses qualification rules to determine whether the channel activity record is to be transformed into one or more target entities in a computing system. If so, a conversion engine accesses user-configurable mappings and conversion rules to identify conversion actions that are to be taken in order to transform the channel activity record into one or more target entities. The conversion engine performs a data transformation on the channel activity record to transform it into the identified one or more target entities.
    Type: Application
    Filed: March 10, 2015
    Publication date: September 15, 2016
    Inventors: Ashish Kothari, Adithya Nittor Vishwanath, Shaleen Sharma, Ramprasadh Kothandaraman, Sutirtha Saha, Ashwinderjit Kaur, Rajarshi Ray, Eric Fernandes, Mahesh Hariharan, Abhishek Agarwal, Kritika Kishore Prasad, Anirban Saha, Gaurav Agrawal, Prateek Rajvanshi