Patents by Inventor Rashmi Bhavsar
Rashmi 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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Patent number: 10316380Abstract: A thermal mechanical treatment method includes consolidating a powder by a severe plastic deformation process and ageing the consolidated powder at low temperature. The method may include cryomilling the powder before consolidating the powder by a severe plastic deformation process; hot isostatic pressing the consolidated powder into a dense powder before aging the consolidated powder; hot extruding the dense powder into a stock shape before aging the consolidated powder; hot-working the stock shape on a gyrating forge at a predetermined temperature before aging the consolidated powder; or heating the consolidated powder to a predetermined temperature, and maintaining the consolidated powder at the predetermined temperature for a predetermined time.Type: GrantFiled: March 31, 2014Date of Patent: June 11, 2019Assignee: SCHLUMBERGER TECHNOLOG CORPORATIONInventors: Indranil Roy, Rashmi Bhavsar
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Patent number: 10072477Abstract: A tool for deploying a wellbore plug in a well using flowable eutectic material is disclosed. A tool having a mandrel, an obstruction, and a flowable quantity of eutectic material in a solid state is positioned in the wellbore. The obstruction is actuated and the flowable material is heated to melt. The obstruction supports the flowed material as it cools to form a plug in the wellbore.Type: GrantFiled: December 2, 2015Date of Patent: September 11, 2018Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Iain Cooper, Mariano Sanchez, Douglas PipChuk, Mohamed Sadek, Dinesh Patel, Rashmi Bhavsar
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Publication number: 20170174981Abstract: A powder of particles can include an aluminum alloy where the aluminum alloy is at least approximately eighty percent by weight of the powder; and one or more metals selected from a group consisting of alkali metals, alkaline earth metals, and basic metals having an atomic number equal to or greater than 31, where the one or more metals selected from the group total at least approximately two percent by weight of the powder; where each of the particles includes individual grains formed of a grain material that includes the aluminum alloy, where each of the particles includes grain boundary material that includes the one or more metals selected from the group, and where the grain boundary material bounds the individual grains.Type: ApplicationFiled: March 30, 2015Publication date: June 22, 2017Inventors: Indranil Roy, Gregoire JACOB, Rashmi Bhavsar
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Publication number: 20170113275Abstract: A flowable blend of materials can include a first particulate material that includes an aluminum alloy where the aluminum alloy is at least approximately eighty percent by weight of the first particulate material and one or more metals selected from a group consisting of alkali metals, alkaline earth metals, group 12 transition metals, and basic metals having an atomic number equal to or greater than 31, where the one or more metals selected from the group total at least approximately two percent by weight of the first particulate material; and a second particulate material where the composition of the first particulate material differs from the composition of the second particulate material.Type: ApplicationFiled: May 28, 2015Publication date: April 27, 2017Inventors: Indranil Roy, Gregoire Jacob, Rashmi Bhavsar
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Publication number: 20170107419Abstract: A method can include providing a blend of a first particulate material and a second particulate material where the first particulate material includes an aluminum alloy where the aluminum alloy is at least approximately eighty percent by weight of the first particulate material and one or more metals selected from a group consisting of alkali metals, alkaline earth metals, group 12 transition metals, and basic metals having an atomic number equal to or greater than 31, where the one or more metals selected from the group total at least approximately two percent by weight of the first particulate material and where the composition of the first particulate material differs from the composition of the second particulate material; forming a solid from the blend; and heat treating the solid to augment strength of the solid.Type: ApplicationFiled: May 28, 2015Publication date: April 20, 2017Inventors: Indranil Roy, Gregoire Jacob, Rashmi Bhavsar
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Patent number: 9535187Abstract: A method for characterizing one or more properties of a geological formation including brine, the method including inputting at least one first property of the geological formation into an equation of state (EOS) model, the EOS model accounting for a high temperature effect on the brine; solving the EOS model to determine at least one second property of the geological formation; and outputting the at least one second property to a display device.Type: GrantFiled: September 2, 2011Date of Patent: January 3, 2017Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Indranil Roy, Oliver C. Mullins, Richard E. Lewis, Colin Longfield, Chris Wilkinson, Paul George, Rashmi Bhavsar
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Publication number: 20160319633Abstract: A tool for deploying a wellbore plug in a well using flowable eutectic material is disclosed. A tool having a mandrel, an obstruction, and a flowable quantity of eutectic material in a solid state is positioned in the wellbore. The obstruction is actuated and the flowable material is heated to melt. The obstruction supports the flowed material as it cools to form a plug in the wellbore.Type: ApplicationFiled: December 2, 2015Publication date: November 3, 2016Inventors: Iain Cooper, Mariano Sanchez, Douglas PipChuk, Mohamed Sadek, Dinesh Patel, Rashmi Bhavsar
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Publication number: 20140294651Abstract: A thermal mechanical treatment method includes consolidating a powder by a severe plastic deformation process and ageing the consolidated powder at low temperature. The method may include cryomilling the powder before consolidating the powder by a severe plastic deformation process; hot isostatic pressing the consolidated powder into a dense powder before aging the consolidated powder; hot extruding the dense powder into a stock shape before aging the consolidated powder; hot-working the stock shape on a gyrating forge at a predetermined temperature before aging the consolidated powder; or heating the consolidated powder to a predetermined temperature, and maintaining the consolidated powder at the predetermined temperature for a predetermined time.Type: ApplicationFiled: March 31, 2014Publication date: October 2, 2014Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Indranil Roy, Rashmi Bhavsar
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Patent number: 8651179Abstract: A swellable packer device upon exposure to brine in a well. The device may be swellable to a substantially constant profile in spite of significant fluctuations in brine concentrations. Thus, the likelihood of packer failure due to under-swelling or over-swelling is reduced. Indeed, the packer may be employed for long-term operations or isolations ranging from a couple of weeks to twenty years or more without undue concern over packer failure from under or over swelling.Type: GrantFiled: April 20, 2010Date of Patent: February 18, 2014Assignee: Schlumberger Technology CorporationInventors: Nitin Y. Vaidya, Frederick Lemme, Sr., Xiaohong Ren, John Whitsitt, Joseph K. Flowers, Rashmi Bhavsar
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Patent number: 8555965Abstract: A downhole device with compressive layer at the surface thereof. Such devices may be particularly well suited for survivability in the face of potentially long term exposure to a downhole environment. Techniques for forming protective compressive layers at the surfaces of such devices may include positioning devices within a chamber for bombardment by high frequency particles. As a manner of enhancing the compressive layer thickness and effectiveness, low temperature conditions may be applied to the device during the high frequency treatment.Type: GrantFiled: May 6, 2010Date of Patent: October 15, 2013Assignee: Schlumberger Technology CorporationInventors: Indranil Roy, Manuel Marya, Rashmi Bhavsar, Chris Wilkinson
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Patent number: 8485265Abstract: Downhole devices including degradable materials and methods of using such devices to control downhole operations are disclosed. A method for controlling a downhole operation includes providing a device that includes a degradable material downhole; and degrading the degradable material to activate the device. Activation of the device may result in a displacement or flow (actuators) that may be used to control or monitor (sensor) a downhole oilfield operation. A downhole device for use in a well penetrating a formation includes, in part or in whole, a degradable material.Type: GrantFiled: June 27, 2007Date of Patent: July 16, 2013Assignee: Schlumberger Technology CorporationInventors: Manuel Marya, Rashmi Bhavsar
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Patent number: 8231947Abstract: Oilfield elements are described, one embodiment comprising a combination of a normally insoluble metal with an element selected from a second metal, a semi-metallic material, and non-metallic materials; and one or more solubility-modified high strength and/or high-toughness polymeric materials selected from polyamides, polyethers, and liquid crystal polymers. Methods of using the oilfield elements in oilfield operations are also described. 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: June 30, 2006Date of Patent: July 31, 2012Assignee: Schlumberger Technology CorporationInventors: Nitin Y. Vaidya, Rashmi Bhavsar, Manuel Marya
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Publication number: 20120059636Abstract: A method for characterizing one or more properties of a geological formation including brine, the method including inputting at least one first property of the geological formation into an equation of state (EOS) model, the EOS model accounting for a high temperature effect on the brine; solving the EOS model to determine at least one second property of the geological formation; and outputting the at least one second property to a display device.Type: ApplicationFiled: September 2, 2011Publication date: March 8, 2012Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Indranil Roy, Oliver C. Mullins, Richard E. Lewis, Colin Longfield, Chris Wilkinson, Paul George, Rashmi Bhavsar
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Publication number: 20110272134Abstract: A downhole device with compressive layer at the surface thereof. Such devices may be particularly well suited for survivability in the face of potentially long term exposure to a downhole environment. Techniques for forming protective compressive layers at the surfaces of such devices may include positioning devices within a chamber for bombardment by high frequency particles. As a manner of enhancing the compressive layer thickness and effectiveness, low temperature conditions may be applied to the device during the high frequency treatment.Type: ApplicationFiled: May 6, 2010Publication date: November 10, 2011Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Indranil Roy, Manuel Marya, Rashmi Bhavsar, Chris Wilkinson
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Publication number: 20110253393Abstract: A swellable packer device upon exposure to brine in a well. The device may be swellable to a substantially constant profile in spite of significant fluctuations in brine concentrations. Thus, the likelihood of packer failure due to under-swelling or over-swelling is reduced. Indeed, the packer may be employed for long-term operations or isolations ranging from a couple of weeks to twenty years or more without undue concern over packer failure from under or over swelling.Type: ApplicationFiled: April 20, 2010Publication date: October 20, 2011Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Nitin Y. Vaidya, Frederick Lemme, SR., Xiaohong Ren, John Whitsitt, Joseph K. Flowers, Rashmi Bhavsar
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Publication number: 20100116046Abstract: A diamond-like carbon coating is provided on a metal interior surface of a sample chamber of a well fluid sampling apparatus to render the sample chamber substantially impervious to the absorption of at least H2S, mercury, and/or mercaptans. The coating is a dense, amorphous, diamond-like carbon with an sp3 content greater than about 65% and is composed of about 70 percent (%) carbon, 30 percent (%) hydrogen. The coating may be applied over the surface in one or more layers by a suitable method, e.g., plasma assisted chemical vapor deposition or a PAVCD process, and is between about 10 and about 20 microns thick. One or more of the layers of the coating includes a small percentage of silicon to increase both the adherence to the metal interior surface of the sample chamber and the absorption resistance of the coating. The resulting sample chamber provides H2S, mercaptan, and mercury retention of greater than about 95% of the original concentration in samples stored up to 14 days.Type: ApplicationFiled: October 9, 2009Publication date: May 13, 2010Inventors: Bradley Martin, Rashmi Bhavsar, Dave MacWilliam
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Patent number: 7658883Abstract: Novel carbon-plus-nitrogen corrosion-resistant ferrous and austenitic alloys, apparatus incorporating an inventive alloy, and methods of making and using the apparatus are described. The corrosion-resistant ferrous and austenitic alloys comprise no greater than about 4 wt. % nickel, are characterized by a strength greater than about 700 MPa (100 ksi), and, when being essentially free of molybdenum (<0.3 wt. %), have minimum Pitting Resistance Equivalence (PRE) numbers of 20 and minimum Measure of Alloying for Corrosion Resistance numbers (MARC) of 30 because of the use of both carbon and nitrogen. The ferrous and austenitic alloys are particularly formulated for use in oilfield operations, especially sour oil and gas wells and reservoirs. 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: December 18, 2006Date of Patent: February 9, 2010Assignee: Schlumberger Technology CorporationInventors: Manuel Marya, Rashmi Bhavsar
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Publication number: 20080236842Abstract: Downhole apparatus and methods of using the apparatus are described, the apparatus comprising at least one metallic component having a DLC coating thereon, the coating present at least on one or more internal passageways of the base metal or alloy to be exposed to downhole environments. Methods of using an apparatus in downhole oilfield operations are also described. 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: February 14, 2008Publication date: October 2, 2008Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Rashmi Bhavsar, Manuel Marya
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Patent number: 7428928Abstract: A technique includes deploying a spring downhole, energizing the spring and using the energized spring to form an annular barrier in the well. The spring may be energized prior to being run downhole or after being run downhole, depending on the particular embodiment of the invention.Type: GrantFiled: April 5, 2004Date of Patent: September 30, 2008Assignee: Schlumberger Technology CorporationInventors: Brian W. Cho, Rodney J. Wetzel, Rashmi Bhavsar
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Publication number: 20080149345Abstract: Downhole devices including degradable materials and methods of using such devices to control downhole operations are disclosed. A method for controlling a downhole operation includes providing a device that includes a degradable material downhole; and degrading the degradable material to activate the device. Activation of the device may result in a displacement or flow (actuators) that may be used to control or monitor (sensor) a downhole oilfield operation. A downhole device for use in a well penetrating a formation includes, in part or in whole, a degradable material.Type: ApplicationFiled: June 27, 2007Publication date: June 26, 2008Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Manuel Marya, Rashmi Bhavsar