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).
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Publication number: 20140363692Abstract: 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: ApplicationFiled: February 5, 2014Publication date: December 11, 2014Applicant: Schlumberger Technology CorporationInventors: Manuel P. Marya, Rashmi B. Bhavsar, Gary L. Rytlewski
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Patent number: 8663401Abstract: 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: GrantFiled: November 21, 2011Date of Patent: March 4, 2014Assignee: Schlumberger Technology CorporationInventors: Manuel P. Marya, Rashmi B. Bhavsar, Gary L. Rytlewski
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Publication number: 20130342211Abstract: 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: ApplicationFiled: March 12, 2013Publication date: December 26, 2013Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: 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
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Patent number: 8499843Abstract: 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: GrantFiled: February 22, 2010Date of Patent: August 6, 2013Assignee: Schlumberger Technology CorporationInventors: 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
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Publication number: 20130133897Abstract: 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: ApplicationFiled: May 31, 2012Publication date: May 30, 2013Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Jason Baihly, Don Aldridge, Rashmi B. Bhavsar, Manuel P. Marya, Nitin Y. Vaidya
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Patent number: 8211247Abstract: 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: GrantFiled: June 28, 2006Date of Patent: July 3, 2012Assignee: Schlumberger Technology CorporationInventors: Manuel P. Marya, Rashmi B. Bhavsar, Gary L. Rytlewski
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Publication number: 20120080189Abstract: 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: ApplicationFiled: November 21, 2011Publication date: April 5, 2012Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Manuel P. Marya, Rashmi B. Bhavsar, Gary L. Rytlewski
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Publication number: 20100139930Abstract: 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: ApplicationFiled: February 22, 2010Publication date: June 10, 2010Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: 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
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Patent number: 7687571Abstract: 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: GrantFiled: April 10, 2008Date of Patent: March 30, 2010Assignee: Schlumberger Technology CorporationInventors: Nitin Y. Vaidya, Rashmi B. Bhavsar
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Patent number: 7665537Abstract: 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: GrantFiled: March 10, 2005Date of Patent: February 23, 2010Assignee: Schlumbeger Technology CorporationInventors: 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
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Patent number: 7631697Abstract: 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: GrantFiled: November 29, 2006Date of Patent: December 15, 2009Assignee: Schlumberger Technology CorporationInventor: Rashmi B. Bhavsar
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Publication number: 20080194717Abstract: 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: ApplicationFiled: April 10, 2008Publication date: August 14, 2008Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Nitin Y. Vaidya, Rashmi B. Bhavsar
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Publication number: 20080125335Abstract: 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: ApplicationFiled: November 29, 2006Publication date: May 29, 2008Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventor: Rashmi B. Bhavsar
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Patent number: 7373991Abstract: 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: GrantFiled: March 27, 2006Date of Patent: May 20, 2008Assignee: Schlumberger Technology CorporationInventors: Nitin Y. Vaidya, Rashmi B. Bhavsar
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Patent number: 7353869Abstract: 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: GrantFiled: November 4, 2004Date of Patent: April 8, 2008Assignee: Schlumberger Technology CorporationInventors: Rodney J. Wetzel, Randolph J. Sheffield, Rashmi B. Bhavsar, Philippe Gambier
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Patent number: 7119283Abstract: 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: GrantFiled: June 15, 2005Date of Patent: October 10, 2006Assignee: Schlumberger Technology Corp.Inventors: Joseph P. Varkey, Garud Sridhar, Seth Silverman, Rashmi B. Bhavsar
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Patent number: 5752569Abstract: 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: GrantFiled: February 8, 1996Date of Patent: May 19, 1998Assignee: Camco International, Inc.Inventors: Rashmi B. Bhavsar, Alan G. Schroeder, Thomas G. Hill, Jr.