Patents by Inventor Dmitry Eskin
Dmitry Eskin 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: 10860753Abstract: A method is provided for characterizing fluid flow in a pipe where the fluid includes a drag reducing polymer of a particular type and particular concentration. A computational model is configured to model flow of a fluid in a pipe. The computational model utilizes an empirical parameter for a drag reducing polymer of the particular type and the particular concentration. The computational model can be used to derive information that characterizes the flow of the fluid in the pipe. The empirical parameter for the particular type and the particular concentration of the drag reducing polymer can be identified by solving another computational model that is configured to model turbulent Couette flow in a Couette device for a fluid that includes a drag reducing polymer of the particular type and the particular concentration. The empirical data needed for identification of the empirical parameter are obtained from Couette device experiments.Type: GrantFiled: November 7, 2013Date of Patent: December 8, 2020Assignee: Schlumberger Technology CorporationInventors: Evgeny Borisovich Barmatov, Dmitry Eskin
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Patent number: 10393916Abstract: In one possible implementation, a computer-readable tangible medium includes instructions that direct a processor to access one or more wellbore properties and a plurality of well fluid properties. Instructions are also present that direct the processor to access a distance between a proposed location of an inlet to a multiphase production logging tool and an emulsion generation location in a wellbore. Further instructions instruct the processor to predict a drop size distribution of emulsified water in the well fluid at the proposed location of the inlet to the multiphase production logging tool. Additional instructions instruct the processor to compute an estimated error in water holdup detected by the multiphase production logging tool based on the drop size distribution, and recommend deployment of a pulsed neutron logging tool in the wellbore when the estimated error in the water holdup is above a preset threshold.Type: GrantFiled: March 15, 2016Date of Patent: August 27, 2019Assignees: SCHLUMBERGR TECHNOLOGY CORPORATION, SAUDI ARABIAN OIL COMPANYInventors: Shouxiang Mark Ma, Dmitry Eskin, Wael Abdallah, Shawn David Taylor
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Patent number: 9869624Abstract: An apparatus (and method) for characterizing interfacial tension between a non-wetting phase fluid and a wetting phase fluid of a slug flow employs a capillary structure that is configured to contain a slug of the non-wetting phase fluid of the slug flow. The slug has a leading edge meniscus and a trailing edge meniscus, and the capillary structure has a venturi-like section. A pressure sensor is configured to measure differential pressure between first and second locations of the capillary structure. The first location is disposed upstream of the leading edge meniscus of the slug with the leading edge meniscus of the slug contained within the venturi-like section. The second location is disposed downstream of the trailing edge meniscus of the slug. Data processing means is configured to derive a measure of interfacial tension based upon the differential pressure measured by the pressure sensor and, optionally, geometry of the capillary structure.Type: GrantFiled: December 14, 2012Date of Patent: January 16, 2018Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Geza Horvath Szabo, John Ratulowski, Dmitry Eskin
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Publication number: 20170269258Abstract: In one possible implementation, a computer-readable tangible medium includes instructions that direct a processor to access one or more wellbore properties and a plurality of well fluid properties. Instructions are also present that direct the processor to access a distance between a proposed location of an inlet to a multiphase production logging tool and an emulsion generation location in a wellbore. Further instructions instruct the processor to predict a drop size distribution of emulsified water in the well fluid at the proposed location of the inlet to the multiphase production logging tool. Additional instructions instruct the processor to compute an estimated error in water holdup detected by the multiphase production logging tool based on the drop size distribution, and recommend deployment of a pulsed neutron logging tool in the wellbore when the estimated error in the water holdup is above a preset threshold.Type: ApplicationFiled: March 15, 2016Publication date: September 21, 2017Inventors: Shouxiang Mark Ma, Dmitry Eskin, Wael Abdallah, Shawn David Taylor
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Publication number: 20160275221Abstract: A method is provided for characterizing fluid flow in a pipe where the fluid includes a drag reducing polymer of a particular type and particular concentration. A computational model is configured to model flow of a fluid in a pipe. The computational model utilizes an empirical parameter for a drag reducing polymer of the particular type and the particular concentration. The computational model can be used to derive information that characterizes the flow of the fluid in the pipe. The empirical parameter for the particular type and the particular concentration of the drag reducing polymer can be identified by solving another computational model that is configured to model turbulent Couette flow in a Couette device for a fluid that includes a drag reducing polymer of the particular type and the particular concentration. The empirical data needed for identification of the empirical parameter are obtained from Couette device experiments.Type: ApplicationFiled: November 7, 2013Publication date: September 22, 2016Inventors: Evgeny Borisovich Barmatov, Dmitry Eskin
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Publication number: 20140316722Abstract: An apparatus (and method) for characterizing interfacial tension between a non-wetting phase fluid and a wetting phase fluid of a slug flow employs a capillary structure that is configured to contain a slug of the non-wetting phase fluid of the slug flow. The slug has a leading edge meniscus and a trailing edge meniscus, and the capillary structure has a venturi-like section. A pressure sensor is configured to measure differential pressure between first and second locations of the capillary structure. The first location is disposed upstream of the leading edge meniscus of the slug with the leading edge meniscus of the slug contained within the venturi-like section. The second location is disposed downstream of the trailing edge meniscus of the slug. Data processing means is configured to derive a measure of interfacial tension based upon the differential pressure measured by the pressure sensor and, optionally, geometry of the capillary structure.Type: ApplicationFiled: December 14, 2012Publication date: October 23, 2014Applicant: Schlumberger Technology CorporationInventors: Geza Horvath Szabo, John Ratulowski, Dmitry Eskin
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Patent number: 8201439Abstract: Methods and related systems are described for determining a property of a solid material relating to wettability, and for evaluating chemical additives. A solid particle is positioned at an interface between a lighter fluid phase, such as oil, and a denser fluid phase, such as water. An external force is applied, preferably with a centrifuge, so as to urge the solid particle into the denser fluid phase. An observation is made as to whether the particles has passed through the denser fluid phase, and based on the observation the contact angle is calculated. The calculation is also based on the densities of each fluid phase, of the solid material, the amount of the external force applied, size of the solid material, and interfacial tension between the two phases. The calculation also preferably accounts for two curvatures representing the interface between the first phase and the second phase as deformed by the solid material.Type: GrantFiled: November 2, 2009Date of Patent: June 19, 2012Assignee: Schlumberger Technology CorporationInventors: Geza Horvath Szabo, Dmitry Eskin, Wael Abdallah, Paul Swenson
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Publication number: 20110106456Abstract: Methods and related systems are described for determining a property of a solid material relating to wettability, and for evaluating chemical additives. A solid particle is positioned at an interface between a lighter fluid phase, such as oil, and a denser fluid phase, such as water. An external force is applied, preferably with a centrifuge, so as to urge the solid particle into the denser fluid phase. An observation is made as to whether the particles has passed through the denser fluid phase, and based on the observation the contact angle is calculated. The calculation is also based on the densities of each fluid phase, of the solid material, the amount of the external force applied, size of the solid material, and interfacial tension between the two phases. The calculation also preferably accounts for two curvatures representing the interface between the first phase and the second phase as deformed by the solid material.Type: ApplicationFiled: November 2, 2009Publication date: May 5, 2011Applicant: Schlumberger Technology CorporationInventors: Geza Horvath Szabo, Dmitry Eskin, Wael Abdallah, Paul Swenson
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Patent number: 7581436Abstract: A method for generating and characterizing an emulsion. The method provides a Couette device having first and second cylindrical members that define an annulus between them. The second cylindrical member is rotatably driven with respect to the first cylindrical member. Two or more substances each in a non-emulsified state are injected into the annulus. The Couette device is operated in a first mode to generate an emulsion from the two or more substances. The Couette device is also operated in a second mode to measure various attributes of the emulsion.Type: GrantFiled: January 25, 2008Date of Patent: September 1, 2009Assignee: Schlumberger Technology CorporationInventors: Dmitry Eskin, Shawn David Taylor, Hussein Alboudwarej, Joao Felix, Geza Horvath Szabo
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Publication number: 20090188304Abstract: A method for generating and characterizing an emulsion. The method provides a Couette device having first and second cylindrical members that define an annulus between them. The second cylindrical member is rotatably driven with respect to the first cylindrical member. Two or more substances each in a non-emulsified state are injected into the annulus. The Couette device is operated in a first mode to generate an emulsion from the two or more substances. The Couette device is also operated in a second mode to measure various attributes of the emulsion.Type: ApplicationFiled: January 25, 2008Publication date: July 30, 2009Applicant: SCHLUMBERGER TECHNOLOGY CORP.Inventors: DMITRY ESKIN, SHAWN DAVID TAYLOR, HUSSEIN ALBOUDWAREJ, JOAO FELIX, GEZA HORVATH SZABO