Patents by Inventor Rashmi B. Bhavsar

Rashmi B. Bhavsar 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: 20140363692
    Abstract: Compositions, apparatus incorporating a composition, and methods of use are described, one composition embodiment consisting essentially of one or more reactive metals in major proportion, and one or more alloying elements in minor proportion, with the provisos that the composition is high-strength, controllably reactive, and degradable under defined conditions. Compositions of the invention may exist in a variety of morphologies, including a reactive metal or degradable alloy processed into an alloy of crystalline, amorphous or mixed structure that may constitute the matrix of other composition, for instance a composite. Methods of using apparatus comprising a composition, particularly in oilfield operations are also described (e.g. flow and displacement control, sensors, actuators). This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
    Type: Application
    Filed: February 5, 2014
    Publication date: December 11, 2014
    Applicant: Schlumberger Technology Corporation
    Inventors: Manuel P. Marya, Rashmi B. Bhavsar, Gary L. Rytlewski
  • Patent number: 8663401
    Abstract: Compositions, apparatus incorporating a composition, and methods of use are described, one composition embodiment consisting essentially of one or more reactive metals in major proportion, and one or more alloying elements in minor proportion, with the provisos that the composition is high-strength, controllably reactive, and degradable under defined conditions. Compositions of the invention may exist in a variety of morphologies, including a reactive metal or degradable alloy processed into an alloy of crystalline, amorphous or mixed structure that may constitute the matrix of other composition, for instance a composite. Methods of using apparatus comprising a composition, particularly in oilfield operations are also described (e.g. flow and displacement control, sensors, actuators). This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: March 4, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Manuel P. Marya, Rashmi B. Bhavsar, Gary L. Rytlewski
  • Publication number: 20130342211
    Abstract: A method for analyzing fluid withdrawn from a subsurface formation includes disposing the withdrawn fluid in a chamber and maintaining the fluid in the chamber substantially at a same temperature and pressure as exists in the subsurface formation. Electric current is passed through the fluid in the chamber using at least one electrode made from a selected metal, the electric current comprising direct current and alternating current of frequency sufficient to determine at least one of (i) resistance of the fluid sample in the chamber directly and (ii) from the direct current determine a polarization resistance of the at least one electrode.
    Type: Application
    Filed: March 12, 2013
    Publication date: December 26, 2013
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Indranil Roy, Manuel P. Marya, Kuo-Chiang Chen, Amit Mohan, Richard Lewis, Craig Borman, Tatiana Reyes Hernandez, Srinand S. Karuppoor, Rashmi B. Bhavsar, Oliver C. Mullins
  • Patent number: 8499843
    Abstract: The invention is a sealing system, such as a packer, that is used in a wellbore to seal against an exterior surface, such as a casing or open wellbore. The sealing system includes a swellable material that swells from an unexpanded state to an expanded state thereby creating a seal when the swellable material comes into contact with a triggering fluid.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: August 6, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Dinesh R. Patel, Y. Gill Hillsman, III, Herve Ohmer, Stephane Hiron, Philippe Gambier, Jonathan K. C. Whitehead, Randolph J. Sheffield, Rodney J. Wetzel, John R. Whitsitt, Thomas D. MacDougall, Nitin Y. Vaidya, James D. Hendrickson, John E. Edwards, Donald W. Ross, Rashmi B. Bhavsar
  • Publication number: 20130133897
    Abstract: A valve device for restricting flow is provided that includes a degradable portion. A method of temporarily blocking flow is also provided which includes a degradable portion of an oilfield element.
    Type: Application
    Filed: May 31, 2012
    Publication date: May 30, 2013
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Jason Baihly, Don Aldridge, Rashmi B. Bhavsar, Manuel P. Marya, Nitin Y. Vaidya
  • Patent number: 8211247
    Abstract: Compositions, apparatus incorporating a composition, and methods of use are described, one composition embodiment consisting essentially of one or more reactive metals in major proportion, and one or more alloying elements in minor proportion, with the provisos that the composition is high-strength, controllably reactive, and degradable under defined conditions. Compositions of the invention may exist in a variety of morphologies, including a reactive metal or degradable alloy processed into an alloy of crystalline, amorphous or mixed structure that may constitute the matrix of other composition, for instance a composite. Methods of using apparatus comprising a composition, particularly in oilfield operations are also described (e.g. flow and displacement control, sensors, actuators). This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: July 3, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Manuel P. Marya, Rashmi B. Bhavsar, Gary L. Rytlewski
  • Publication number: 20120080189
    Abstract: Compositions, apparatus incorporating a composition, and methods of use are described, one composition embodiment consisting essentially of one or more reactive metals in major proportion, and one or more alloying elements in minor proportion, with the provisos that the composition is high-strength, controllably reactive, and degradable under defined conditions. Compositions of the invention may exist in a variety of morphologies, including a reactive metal or degradable alloy processed into an alloy of crystalline, amorphous or mixed structure that may constitute the matrix of other composition, for instance a composite. Methods of using apparatus comprising a composition, particularly in oilfield operations are also described (e.g. flow and displacement control, sensors, actuators). This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: November 21, 2011
    Publication date: April 5, 2012
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Manuel P. Marya, Rashmi B. Bhavsar, Gary L. Rytlewski
  • Publication number: 20100139930
    Abstract: The invention is a sealing system, such as a packer, that is used in a wellbore to seal against an exterior surface, such as a casing or open wellbore. The sealing system includes a swellable material that swells from an unexpanded state to an expanded state thereby creating a seal when the swellable material comes into contact with a triggering fluid.
    Type: Application
    Filed: February 22, 2010
    Publication date: June 10, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Dinesh R. Patel, Y. Gil Hilsman, III, Herve Ohmer, Stephane Hiron, Philippe Gambier, Jonathan K.C. Whitehead, Randolph J. Sheffield, Rodney J. Wetzel, John R. Whitsitt, Thomas D. MacDougall, Nitin Y. Vaidya, James D. Hendrickson, John E. Edwards, Donald W. Ross, Rashmi B. Bhavsar
  • Patent number: 7687571
    Abstract: Oilfield elements and assemblies are described comprising, in one embodiment, an elastomeric composition comprising the reaction product of a linear or branched polymer having residual ethylenic unsaturation with an ethylenically unsaturated organic monomer having at least one reactive moiety selected from acid, acid anhydride, and acid salt, the elastomeric composition formed into an oilfield element. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: March 30, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Nitin Y. Vaidya, Rashmi B. Bhavsar
  • Patent number: 7665537
    Abstract: The invention is a sealing system, such as a packer, that is used in a wellbore to seal against an exterior surface, such as a casing or open wellbore. The sealing system includes a swellable material that swells from an unexpanded state to an expanded state thereby creating a seal when the swellable material comes into contact with a triggering fluid.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: February 23, 2010
    Assignee: Schlumbeger Technology Corporation
    Inventors: Dinesh R. Patel, Y. Gil Hilsman, III, Herve Ohmer, Stephane Hiron, Philippe Gambier, Jonathan K. C. Whitehead, Randolph J. Sheffield, Rodney J. Wetzel, John R. Whitsitt, Thomas D. MacDougall, Nitin Y. Vaidya, James D. Hendrickson, John E. Edwards, Donald W. Ross, Rashmi B. Bhavsar
  • Patent number: 7631697
    Abstract: An oilfield apparatus has a swellable elastomeric composition that includes a swellable elastomer and one or more nanosensors dispersed therein. An oilfield assembly for exploring for, drilling for, testing for, or producing hydrocarbons includes various oilfield elements such as tubing, jointed pipe, sucker rods, submersible pump motor protector bags, packer elements, blow out preventer elements, zonal isolation tool elements, etc; and one or more of the oilfield elements has a swellable elastomeric composition that includes a swellable elastomer and one or more nanosensors dispersed therein. A method of selecting one or more oilfield elements has a component of an elastomeric composition that includes a swellable elastomer and one or more nanosensors dispersed therein; and a method of using the one or more oilfield elements in an oilfield operation, thus exposing the oilfield element to an oilfield environment.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: December 15, 2009
    Assignee: Schlumberger Technology Corporation
    Inventor: Rashmi B. Bhavsar
  • Publication number: 20080194717
    Abstract: Oilfield elements and assemblies are described comprising, in one embodiment, an elastomeric composition comprising the reaction product of a linear or branched polymer having residual ethylenic unsaturation with an ethylenically unsaturated organic monomer having at least one reactive moiety selected from acid, acid anhydride, and acid salt, the elastomeric composition formed into an oilfield element. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: April 10, 2008
    Publication date: August 14, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Nitin Y. Vaidya, Rashmi B. Bhavsar
  • Publication number: 20080125335
    Abstract: Apparatus, oilfield assemblies, and methods of use are described. The apparatus comprises, in one embodiment, a swellable elastomeric composition comprising a swellable elastomer and one or more nanosensors dispersed therein and shaped into an oilfield element. Methods of the invention comprise using an apparatus of the invention in an oilfield operation, thus exposing the oilfield element to an oilfield environment, and sensing one or more reservoir parameters. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
    Type: Application
    Filed: November 29, 2006
    Publication date: May 29, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Rashmi B. Bhavsar
  • Patent number: 7373991
    Abstract: Oilfield apparatus and methods of use, the apparatus comprising an elastomeric composition comprising the reaction product of a linear or branched polymer having residual ethylenic unsaturation with an ethylenically unsaturated organic monomer having at least one reactive moiety selected from the group consisting of acid, acid anhydride, and acid salt.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: May 20, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Nitin Y. Vaidya, Rashmi B. Bhavsar
  • Patent number: 7353869
    Abstract: A system and method is provided for sensing a variety of parameters in well-related environments. A skin sensor is deployed in downhole applications to obtain data used in analyzing well characteristics.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: April 8, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Rodney J. Wetzel, Randolph J. Sheffield, Rashmi B. Bhavsar, Philippe Gambier
  • Patent number: 7119283
    Abstract: Electric cables used with wellbore devices to analyze geologic formations adjacent a wellbore including at least one insulated conductor, and one or more armor wires surrounding the insulated conductor, the armor wires formed of a high strength core surrounded by a corrosion resistant alloy clad. The alloy clad includes such alloys as beryllium-copper based alloys, nickel-chromium based alloys, superaustenitic stainless steel alloys, nickel-cobalt based alloys, nickel-molybdenum-chromium based alloys, and the like. The cables of the invention may be any useful electric cable, including monocables, quadcables, heptacables, quadcables, slickline cables, multiline cables, coaxial cables, or seismic cables.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: October 10, 2006
    Assignee: Schlumberger Technology Corp.
    Inventors: Joseph P. Varkey, Garud Sridhar, Seth Silverman, Rashmi B. Bhavsar
  • Patent number: 5752569
    Abstract: An equalizing subsurface safety valve for controlling fluid flow in a well conduit comprises a tubular body member having a longitudinal bore extending therethrough, a flapper hingably connected within the tubular body member to alternately permit and prevent fluid flow through the longitudinal bore, means for biasing the flapper to a normally closed position to prevent fluid flow through the longitudinal bore, a flow tube longitudinally movable within the longitudinal bore for controllably opening the flapper, fluid passage formed within the tubular body for providing fluid communication between the longitudinal bore adjacent a first side of the flapper and a second side of the flapper, and a closure member mounted across the fluid passage adjacent the first side of the flapper and movable along an axis generally transverse to the longitudinal bore.
    Type: Grant
    Filed: February 8, 1996
    Date of Patent: May 19, 1998
    Assignee: Camco International, Inc.
    Inventors: Rashmi B. Bhavsar, Alan G. Schroeder, Thomas G. Hill, Jr.