Patents by Inventor Alexander Zazovsky
Alexander Zazovsky 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: 9151415Abstract: A tubular pipe adapted for transporting oil and water may be treated upon its interior surface to reduce frictional pressure of a multiphase oil/water mixture flowing through the pipe. The tubular pipe may have an interior wall and a central cavity. In some instances, the interior surface is provided with a first textured region being adapted for reducing the adhesive forces of transported oil along the interior wall. A second region upon the interior wall may be adapted for reducing the adhesive forces of water along the interior wall of the tubular pipe. In some applications, riblets may be provided upon the interior pipe wall to further reduce the frictional forces of fluid flowing through the central cavity of the pipe.Type: GrantFiled: March 5, 2013Date of Patent: October 6, 2015Assignee: Chevron U.S.A. Inc.Inventors: Alexander Zazovsky, Luis Phillipe Costa Ferreira Tosi, Seth Thomas Taylor, Andres Zoldi, Grzegorz Jan Kusinski, Leslie Douglas Munson
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Publication number: 20140283592Abstract: A pressure response to low frequency harmonic pressure oscillations generated in a borehole by at least one oscillation source is registered by at least one acoustic sensor. A phase shift of stationary pressure oscillations registered by the acoustic sensor relatively to the low frequency harmonic pressure oscillations of the oscillation source and a ratio between an amplitude of the stationary pressure oscillations registered by the acoustic sensor and an amplitude of the low frequency harmonic pressure oscillations of the oscillation source are determined. A thickness of a mudcake is determined and based on the results a cake piezoconductivity or a fluid mobility or both are determined.Type: ApplicationFiled: September 28, 2012Publication date: September 25, 2014Inventors: Timur Vyacheslavovich Zharnikov, Masafumi Fukuhara, Alexander Zazovsky, Fernando Garcia-Osuna
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Publication number: 20140233354Abstract: At least one acoustic sensor registers a pressure response to a low-frequency non-oscillating pressure signal generated in a borehole by at least one source. At least one characteristic of a transient process of pressure change is determined from the registered signal. A thickness of a mudcake is determined. Then, based on the values received, a mudcake piezoconductivity or a fluid mobility or both are determined.Type: ApplicationFiled: September 28, 2012Publication date: August 21, 2014Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Timur Vyacheslavovich Zharnikov, Masafumi Fukuhara, Alexander Zazovsky, Fernando Garcia-Osuna
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Patent number: 8744774Abstract: Cleanup monitoring and prediction in real time targeting estimation of pumpout volume versus final contamination, including detecting breakthrough of formation fluid to a sampling tool and detecting transition of cleanup regime from a predominantly circumferential cleanup regime to a predominantly vertical cleanup regime. Similar workflow can be employed for estimating contamination at the end of cleanup production for a given pumpout volume.Type: GrantFiled: November 10, 2008Date of Patent: June 3, 2014Assignee: Schlumberger Technology CorporationInventor: Alexander Zazovsky
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Publication number: 20140020783Abstract: A tubular pipe adapted for transporting oil and water may be treated upon its interior surface to reduce frictional pressure of a multiphase oil/water mixture flowing through the pipe. The tubular pipe may have an interior wall and a central cavity. In some instances, the interior surface is provided with a first textured region being adapted for reducing the adhesive forces of transported oil along the interior wall. A second region upon the interior wall may be adapted for reducing the adhesive forces of water along the interior wall of the tubular pipe. In some applications, riblets may be provided upon the interior pipe wall to further reduce the frictional forces of fluid flowing through the central cavity of the pipe.Type: ApplicationFiled: March 5, 2013Publication date: January 23, 2014Applicant: Chevron U.S.A. Inc.Inventors: Alexander Zazovsky, Luis Phillipe Costa Ferreira Tosi, Seth Thomas Tayor, Andres Zoldi, Grzegorz Jan Kusinski, Leslie Douglas Munson
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Patent number: 8584748Abstract: An apparatus comprising a tool body configured to be conveyed within a wellbore extending into a subterranean formation, an inflatable packer coupled to the tool body, and a probe assembly coupled to the tool body and comprising an inner sealing element and an outer sealing element, wherein at least one of the inner sealing element and the outer sealing element comprises an elongated shape, and wherein at least a portion of the probe assembly is disposed on the inflatable packer.Type: GrantFiled: July 7, 2010Date of Patent: November 19, 2013Assignee: Schlumberger Technology CorporationInventors: Nathan Church, Stephane Briquet, Darya Mustafina, Alexander Skibin, Alexander Zazovsky
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Patent number: 8496054Abstract: A method for sampling fluid in a subterranean formation includes, reducing a viscosity of a fluid, pressurizing a portion of the subterranean formation and collecting a fluid sample. Specifically, a viscosity of a fluid in a portion of the subterranean formation is reduced and a portion of the subterranean formation is pressurizing by injecting a displacement fluid into the subterranean formation. A sample of the fluid pressurized by the displacement fluid is then collected.Type: GrantFiled: December 21, 2007Date of Patent: July 30, 2013Assignee: Schlumberger Technology CorporationInventors: Alexander Zazovsky, Anthony Goodwin, Jacques R. Tabanou, Kambiz A. Safinya
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Patent number: 8484858Abstract: A drill string caliper includes a mandrel configured to be coupled within a drill string. At least one laterally extensible arm is coupled to an exterior of the mandrel. A biasing device is configured to urge the at least one arm into contact with a wall of a wellbore. A sensor is configured to generate an output signal corresponding to a lateral extent of the at least one arm.Type: GrantFiled: March 7, 2011Date of Patent: July 16, 2013Assignee: Schlumberger Technology CorporationInventors: James C. Brannigan, Raymond V. Nold, III, John C. Rasmus, Fernando Garcia-Osuna, Alexander Zazovsky
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Patent number: 8429962Abstract: Methods and apparatus to control a formation testing operation based on a mudcake leakage are disclosed. A disclosed example method for use with a downhole tool disposed in a wellbore comprises measuring a property of a mudcake layer at a first location in a wellbore, determining a value representative of an estimated leakage through the mudcake layer based on the property, and determining, based on the value, whether to continue a formation testing operation.Type: GrantFiled: September 9, 2011Date of Patent: April 30, 2013Assignee: Schlumberger Technology CorporationInventors: Alexander Zazovsky, Fernando Garcia-Osuna, Steve G. Villareal, Timur Zharnikov
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Patent number: 8393874Abstract: A pumping system and method to be used within a downhole tool is disclosed herein. The pumping system includes a displacement unit having a cavity formed therein, in which the cavity is configured to receive a fluid therein. A hydraulic driving device and a mechanical driving device are then both included within the system such that both the hydraulic driving device and the mechanical driving device are configured to drive a piston of the displacement unit to receive the fluid within the cavity.Type: GrantFiled: November 24, 2009Date of Patent: March 12, 2013Assignee: Schlumberger Technology CorporationInventors: Alexander Zazovsky, Mark Milkovisch, Pierre Campanac
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Patent number: 8210260Abstract: An apparatus comprising first and second fluid intakes, a pump, and a sample chamber, may be positioned in a borehole penetrating a subterranean formation. A method of use thereof may comprise drawing fluid from the subterranean formation and into the first and second fluid intakes using the pump, discharging into the borehole at least a portion of the fluid drawn into the second fluid intake, and selectively diverting at least a portion of the fluid drawn into the first fluid intake to the sample chamber.Type: GrantFiled: January 20, 2010Date of Patent: July 3, 2012Assignee: Schlumberger Technology CorporationInventors: Mark Milkovisch, Alexander Zazovsky, Simon Ross
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Patent number: 8162052Abstract: A downhole tool for use in a well may comprise a vessel having a piston or a valve disposed therein and defining first and second volumes wherein the first volume is configured to receive formation fluid from an inlet port, and an actuator configured to extract formation fluid, the actuator being fluidly isolated from a fluid flow path extending between the inlet port and the first volume. The downhole tool may also comprise a flow-line configured to deliver formation fluid to the vessel, and an actuator configured to register an end of the flow-line with the inlet of the vessel.Type: GrantFiled: January 21, 2009Date of Patent: April 24, 2012Assignee: Schlumberger Technology CorporationInventors: Anthony R. H. Goodwin, Julian J. Pop, Stephane Briquet, Ricardo Vasques, Alexander Zazovsky
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Publication number: 20120055711Abstract: A drill string caliper includes a mandrel configured to be coupled within a drill string. At least one laterally extensible arm is coupled to an exterior of the mandrel. A biasing device is configured to urge the at least one arm into contact with a wall of a wellbore. A sensor is configured to generate an output signal corresponding to a lateral extent of the at least one arm.Type: ApplicationFiled: March 7, 2011Publication date: March 8, 2012Inventors: James C. Brannigan, Raymond V. Nold, III, John C. Rasmus, Fernando Garcia-Osuna, Alexander Zazovsky
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Publication number: 20110320127Abstract: Methods and apparatus to control a formation testing operation based on a mudcake leakage are disclosed. A disclosed example method for use with a downhole tool disposed in a wellbore comprises measuring a property of a mudcake layer at a first location in a wellbore, determining a value representative of an estimated leakage through the mudcake layer based on the property, and determining, based on the value, whether to continue a formation testing operation.Type: ApplicationFiled: September 9, 2011Publication date: December 29, 2011Inventors: Alexander Zazovsky, Fernando Garcia-Osuna, Steve G. Villareal, Timur Zharnikov
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Patent number: 8042387Abstract: Methods and apparatus to control a formation testing operation based on a mudcake leakage are disclosed. A disclosed example method for use with a downhole tool disposed in a wellbore comprises measuring a property of a mudcake layer at a first location in a wellbore, determining a value representative of an estimated leakage through the mudcake layer based on the property, and determining, based on the value, whether to continue a formation testing operation.Type: GrantFiled: May 16, 2008Date of Patent: October 25, 2011Assignee: Schlumberger Technology CorporationInventors: Alexander Zazovsky, Fernando Garcia-Osuna, Steve G. Villareal, Timur Zharnikov
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Patent number: 8024868Abstract: A drill string caliper includes a mandrel configured to be coupled within a drill string. At least one laterally extensible arm is coupled to an exterior of the mandrel. A biasing device is configured to urge the at least one arm into contact with a wall of a wellbore. A sensor is configured to generate an output signal corresponding to a lateral extent of the at least one arm.Type: GrantFiled: June 17, 2009Date of Patent: September 27, 2011Assignee: Schlumberger Technology CorporationInventors: James C. Brannigan, Raymond V. Nold, III, John Rasmus, Fernando Garcia-Osuna, Alexander Zazovsky
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Patent number: 8016038Abstract: A downhole tool for extracting a sample from a subsurface formation includes an emitter of electromagnetic energy configured to heat water in the subsurface formation. A method for extracting a sample from a subsurface formation involves conveying a downhole tool in a wellbore drilled through the subsurface formation, the downhole tool having an emitter of electromagnetic energy configured to heat water in the subsurface formation, and actuating the emitter to expose a portion of the formation to electromagnetic energy.Type: GrantFiled: January 29, 2009Date of Patent: September 13, 2011Assignee: Schlumberger Technology CorporationInventors: Anthony R. H. Goodwin, Julian J. Pop, Stephen Yeldell, Jason Hueber, Pierre-Yves Corre, Stephane Briquet, Alexander Zazovsky, Carsten Sonne
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Publication number: 20110123368Abstract: A pumping system and method to be used within a downhole tool is disclosed herein. The pumping system includes a displacement unit having a cavity formed therein, in which the cavity is configured to receive a fluid therein. A hydraulic driving device and a mechanical driving device are then both included within the system such that both the hydraulic driving device and the mechanical driving device are configured to drive a piston of the displacement unit to receive the fluid within the cavity.Type: ApplicationFiled: November 24, 2009Publication date: May 26, 2011Inventors: ALEXANDER ZAZOVSKY, Mark Milkovisch, Pierre Campanac
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Patent number: 7932220Abstract: A composition for use in an oil chamber of a tool includes a hydraulic oil; and a surfactant, wherein the surfactant is present at an amount sufficient to form micelles in the hydraulic oil. The composition may further include an amphiphilic copolymer. A method includes providing a hydraulic fluid composition comprising a hydraulic oil and a surfactant capable of forming micelles in the hydraulic oil; and filling a hydraulic chamber in the tool with the hydraulic fluid composition. The hydraulic fluid composition may further include an amphiphilic copolymer.Type: GrantFiled: February 26, 2007Date of Patent: April 26, 2011Assignee: Schlumberger Technology CorporationInventors: Alexander Zazovsky, Jian Zhou, Christopher Del Campo, Golchehreh Salamat, Diankui Fu, Jese C. Lee
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Patent number: 7878244Abstract: Apparatus and methods to perform focused sampling of reservoir fluid are described. An example method couples a sampling probe to a subterranean formation and, while the sampling probe is coupled to the subterranean formation, varies a pumping ratio of at least two displacement units to reduce a contamination level of a formation flu id extracted via the sampling probe from the subterranean formation.Type: GrantFiled: July 27, 2007Date of Patent: February 1, 2011Assignee: Schlumberger Technology CorporationInventors: Ray Nold, III, Alexander Zazovsky, Ricardo Vasques, Steven G. Villareal, Reinhart Ciglenec, Albert Hoefel