Patents by Inventor Evgeny Barmatov

Evgeny Barmatov 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).

  • Patent number: 10087530
    Abstract: Corrosion of steel by aqueous acidic solution when treating a wellbore with acid is inhibited by a procedure in which the steel is initially exposed to a first aqueous solution containing one or more corrosion inhibiting constituents which provide both corrosion inhibitor and hydrophobic liquid and deposit a corrosion inhibiting film on the steel surface and then exposed to an acidic second aqueous solution containing one or more such corrosion inhibiting constituents at a lower concentration. During this second period, the lower concentration of corrosion inhibiting constituents in the second aqueous solution maintains the film already established on the steel surface. Weight loss through corrosion in the second stage is lower than the weight loss which otherwise would be observed. Overall there can be reduction of both weight loss and consumption of corrosion inhibitor.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: October 2, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Trevor Hughes, Evgeny Barmatov, Bruno Drochon
  • Publication number: 20170001415
    Abstract: A wire includes a ferrous core. The ferrous core can be coated. The coatings can include nickel, molybdenum, zinc and Fe. A process of forming a wire can include placing a metal strip alongside a ferrous wire core, bending the strip around the core, and seam welding the strip to form a metal tube around the core. The process of forming a wire can include applying a metal layer to a ferrous metal rod to form a plated rod, placing a metal strip alongside the rod, bending the strip around the rod, and seam welding the strip to form a metal tube around the rod. The process of forming a wire can include coating a ferrous wire core with a layer of nickel, molybdenum or a nickel alloy that circumferentially surrounds the ferrous wire core.
    Type: Application
    Filed: September 14, 2016
    Publication date: January 5, 2017
    Inventors: Trevor Hughes, Joseph Varkey, Vadim Protasov, Evgeny Barmatov, Paul Wanjau
  • Patent number: 9446565
    Abstract: A wire includes a ferrous core. The ferrous core can be coated. The coatings can include nickel, molybdenum, zinc and Fe. A process of forming a wire can include placing a metal strip alongside a ferrous wire core, bending the strip around the core, and seam welding the strip to form a metal tube around the core. The process of forming a wire can include applying a metal layer to a ferrous metal rod to form a plated rod, placing a metal strip alongside the rod, bending the strip around the rod, and seam welding the strip to form a metal tube around the rod. The process of forming a wire can include coating a ferrous wire core with a layer of nickel, molybdenum or a nickel alloy that circumferentially surrounds the ferrous wire core.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: September 20, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Trevor Hughes, Joseph Varkey, Vadim Protasov, Evgeny Barmatov, Paul Wanjau
  • Publication number: 20160108308
    Abstract: A wellbore fluid comprises an aqueous carrier liquid, hydrophobic particulate material suspended therein and a gas to wet the surface of the particles and bind them together as agglomerates. The hydrophobic particulate material has a specified maximum particle size and/or minimum surface area: namely a volume median particle size d50 of not more than 200 micron, determined as median diameter of spheres of equivalent volume and/or a surface area of at least 30 m2 per litre (0.03 m2 per milliliter), determined as surface area of smooth spheres of equivalent volume. The agglomeration of the particles by gas leads to the formation of agglomerates which contain gas and so have a bulk density lower than the density of the particles. This reduces the rate of settling. The fluid is particularly envisaged as a slickwater fracturing fluid in which the suspended particles are proppant.
    Type: Application
    Filed: December 18, 2015
    Publication date: April 21, 2016
    Inventors: Trevor Hughes, Evgeny Barmatov, Jill Geddes, Michael Fuller, Bruno Drochon, Sergey Makarychev-Mikhailov
  • Publication number: 20160059519
    Abstract: A wire includes a ferrous core. The ferrous core can be coated. The coatings can include nickel, molybdenum, zinc and Fe. A process of forming a wire can include placing a metal strip alongside a ferrous wire core, bending the strip around the core, and seam welding the strip to form a metal tube around the core. The process of forming a wire can include applying a metal layer to a ferrous metal rod to form a plated rod, placing a metal strip alongside the rod, bending the strip around the rod, and seam welding the strip to form a metal tube around the rod. The process of forming a wire can include coating a ferrous wire core with a layer of nickel, molybdenum or a nickel alloy that circumferentially surrounds the ferrous wire core.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 3, 2016
    Inventors: Trevor Hughes, Joseph Varkey, Vadim Protasov, Evgeny Barmatov, Paul Wanjau
  • Publication number: 20160010217
    Abstract: Corrosion of steel by aqueous acidic solution when treating a wellbore with acid is inhibited by a procedure in which the steel is initially exposed to a first aqueous solution containing one or more corrosion inhibiting constituents which provide both corrosion inhibitor and hydrophobic liquid and deposit a corrosion inhibiting film on the steel surface and then exposed to an acidic second aqueous solution containing one or more such corrosion inhibiting constituents at a lower concentration. During this second period, the lower concentration of corrosion inhibiting constituents in the second aqueous solution maintains the film already established on the steel surface. Weight loss through corrosion in the second stage is lower than the weight loss which otherwise would be observed. Overall there can be reduction of both weight loss and consumption of corrosion inhibitor.
    Type: Application
    Filed: February 21, 2014
    Publication date: January 14, 2016
    Inventors: Trevor Hughes, Evgeny Barmatov, Bruno Drochon
  • Patent number: 9234415
    Abstract: A wellbore fluid comprises an aqueous carrier liquid, hydrophobic particulate material suspended therein and a gas to wet the surface of the particles and bind them together as agglomerates. The hydrophobic particulate material has a specified maximum volume median particle size d50 of not more than 200 micron, and/or a minimum surface area of at least 30 m2 per liter. Agglomerates of the particles contain gas and so have a bulk density lower than the density of the particles. This reduces the rate of settling. The fluid is particularly envisaged as a slickwater fracturing fluid in which the suspended particles are proppant. The small particle size and/or substantial surface area increases the amount of gas which can be retained within agglomerates and so enhances the buoyancy of the agglomerates. The end result is that a greater proportion of a hydraulic fracture is propped open.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: January 12, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Trevor Hughes, Evgeny Barmatov, Jill Geddes, Michael Fuller, Bruno Drochon, Sergey Makarychev-Mikhailov
  • Patent number: 8714248
    Abstract: Gravel packing a region of a wellbore is carried out using one or more hydrophobically-surfaced particulate materials as the gravel. Placing the gravel pack is carried out using an aqueous carrier liquid, with hydrophobic particulate material suspended in the liquid and a gas to wet the surface of the particles and bind them together as agglomerates. The presence of gas lowers the density of the agglomerates relative to the particulate material in them, so that transport of the particulates is improved. The invention enables the placing of longer, uniformly packed, gravel packs, especially in horizontal and near horizontal wellbores.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: May 6, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Trevor Hughes, Evgeny Barmatov, Jill Geddes, Michael Fuller, Bruno Drochon, Sergey Makarychev-Mikhailov
  • Patent number: 8696963
    Abstract: A swellable packer including a tubular member and a swellable element. The tubular member is disposable on a mandrel configured to be deployed into a wellbore. The swellable element is disposed around the tubular member, and has segments of different cross link densities, with the segments configured to provide a varying cross link density in the swellable element along a thickness of the swellable element, an azimuth of the swellable element, or both.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: April 15, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Nitin Y. Vaidya, Evgeny Barmatov
  • Patent number: 8459353
    Abstract: A wellbore fluid is an aqueous carrier liquid with first and second hydrophobic particulate materials suspended therein. The first hydrophobic particles have a higher specific gravity than the second hydrophobic particles and the fluid also comprises a gas to wet the surface of the particles and bind them together as agglomerates. The fluid may be a fracturing fluid or gravel packing fluid and the first particulate material may be proppant or gravel. The lighter second particulate material and the gas both reduce the density of the agglomerates which form so that they settle more slowly from the fluid, or are buoyant and do not settle. This facilitates transport and placement in a hydraulic fracture or gravel pack. One application of this is when fracturing a gas-shale with slickwater. The benefit of reduced settling is better placement of proppant so that a greater amount of the fracture is propped open.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: June 11, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Trevor Hughes, Evgeny Barmatov, Jill Geddes, Michael Fuller, Bruno Drochon, Sergey Makarychev-Mikhailov
  • Patent number: 8448706
    Abstract: A wellbore fluid comprises an aqueous carrier liquid, hydrophobic fibers suspended therein, hydrophobic particulate material also suspended in the carrier liquid, and a gas to wet the surfaces of the particles and fibers and bind them together as agglomerates. The wellbore fluid may be a slickwater fracturing fluid and may be used for fracturing a tight gas reservoir. Using a combination of hydrophobic particulate material, hydrophobic fibers and gas inhibits settling out of the particulate material from an aqueous liquid. Because the gas acts to wet the surfaces of both materials and agglomerates them, the particulate material is made to adhere to the fibers; the fibers form a network which hinders settling of the particulate material adhering to them, and the agglomerates contain gas and so have a bulk density which is less than the specific gravity of the solids contained in the agglomerates.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: May 28, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Trevor Hughes, Evgeny Barmatov, Jill Geddes, Michael Fuller, Bruno Drochon, Sergey Makarychev-Mikhailov
  • Publication number: 20120273119
    Abstract: A swellable packer including a tubular member and a swellable element. The tubular member is disposable on a mandrel configured to be deployed into a wellbore. The swellable element is disposed around the tubular member, and has segments of different cross link densities, with the segments configured to provide a varying cross link density in the swellable element along a thickness of the swellable element, an azimuth of the swellable element, or both.
    Type: Application
    Filed: July 10, 2012
    Publication date: November 1, 2012
    Inventors: Nitin Y. Vaidya, Evgeny Barmatov
  • Patent number: 8141637
    Abstract: Solid material required at a subterranean location is supplied from the surface suspended in a carrier liquid and agglomerated below ground by means of a binding liquid. To achieve agglomeration, the binding liquid and the particulate solid are similar to each other but opposite to the carrier liquid in hydrophilic/hydrophobic character. The solid and the binding liquid may both be hydrophobic while the carrier liquid is hydrophilic, or vice versa. The solid may be hydrophobically surface modified to render it hydrophobic. The binding liquid may be provided as a precursor which converts to the binding liquid below ground to trigger agglomeration after arrival at the subterranean location. The agglomerates may function as proppant heterogeneously placed in a fracture of a reservoir, or may serve to block an unwanted path of flow. The binding liquid may polymerise after agglomeration so as to stabilise and strengthen the agglomerates.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: March 27, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Evgeny Barmatov, Jill Geddes, Trevor Hughes, Dean Willberg, Bruce Mackay
  • Publication number: 20120048555
    Abstract: A wellbore fluid comprising an aqueous carrier liquid, hydrophobic fibers suspended therein, hydrophobic particulate material also suspended in the carrier liquid, and a gas to wet the surfaces of the particles and fibers and bind them together as agglomerates. The wellbore fluid may be a slickwater fracturing fluid and may be used for fracturing a tight gas reservoir. Using a combination of hydrophobic particulate material, hydrophobic fibers and gas inhibits settling out of the particulate material from an aqueous liquid. Because the gas acts to wet the surfaces of both materials and agglomerates them, the particulate material is made to adhere to the fibers; the fibers form a network which hinders settling of the particulate material adhering to them, and the agglomerates contain gas and so have a bulk density which is less than the specific gravity of the solids contained in the agglomerates.
    Type: Application
    Filed: August 25, 2010
    Publication date: March 1, 2012
    Applicant: Schlumberger Technology Corporation
    Inventors: Trevor Hughes, Evgeny Barmatov, Jill Geddes, Michael Fuller, Bruno Drochon, Sergey Makarychev-Mikhailov
  • Publication number: 20120048554
    Abstract: A wellbore fluid comprises an aqueous carrier liquid, hydrophobic particulate material suspended therein and a gas to wet the surface of the particles and bind them together as agglomerates. The hydrophobic particulate material has a specified maximum particle size and/or minimum surface area: namely a volume median particle size d50 of not more than 200 micron, determined as median diameter of spheres of equivalent volume and/or a surface area of at least 30 m2 per liter (0.03 m2 per milliliter), determined as surface area of smooth spheres of equivalent volume. The agglomeration of the particles by gas leads to the formation of agglomerates which contain gas and so have a bulk density lower than the density of the particles. This reduces the rate of settling. The fluid is particularly envisaged as a slickwater fracturing fluid in which the suspended particles are proppant.
    Type: Application
    Filed: August 25, 2010
    Publication date: March 1, 2012
    Applicant: Schlumberger Technology Corporation
    Inventors: Trevor Hughes, Evgeny Barmatov, Jill Geddes, Michael Fuller, Bruno Drochon, Sergey Makarychev-Mikhailov
  • Publication number: 20120048557
    Abstract: A wellbore fluid is an aqueous carrier liquid with first and second hydrophobic particulate materials suspended therein. The first hydrophobic particles have a higher specific gravity than the second hydrophobic particles and the fluid also comprises a gas to wet the surface of the particles and bind them together as agglomerates. The fluid may be a fracturing fluid or gravel packing fluid and the first particulate material may be proppant or gravel. The lighter second particulate material and the gas both reduce the density of the agglomerates which form so that they settle more slowly from the fluid, or are buoyant and do not settle. This facilitates transport and placement in a hydraulic fracture or gravel pack. One application of this is when fracturing a gas-shale with slickwater. The benefit of reduced settling is better placement of proppant so that a greater amount of the fracture is propped open.
    Type: Application
    Filed: August 25, 2010
    Publication date: March 1, 2012
    Applicant: Schlumberger Technology Corporation
    Inventors: Trevor Hughes, Evgeny Barmatov, Jill Geddes, Michael Fuller, Bruno Drochon, Sergey Makarychev-Mikhailov
  • Publication number: 20120048547
    Abstract: Gravel packing a region of a wellbore is carried out using one or more hydrophobically-surfaced particulate materials as the gravel. Placing the gravel pack is carried out using an aqueous carrier liquid, with hydrophobic particulate material suspended in the liquid and a gas to wet the surface of the particles and bind them together as agglomerates. The presence of gas lowers the density of the agglomerates relative to the particulate material in them, so that transport of the particulates is improved. The invention enables the placing of longer, uniformly packed, gravel packs, especially in horizontal and near horizontal wellbores.
    Type: Application
    Filed: August 25, 2010
    Publication date: March 1, 2012
    Applicant: Schlumberger Technology Corporation
    Inventors: Trevor Hughes, Evgeny Barmatov, Jill Geddes, Michael Fuller, Bruno Drochon, Sergey Makarychev-Mikhailov
  • Publication number: 20110120733
    Abstract: A swellable packer including a tubular member and a swellable element. The tubular member is disposable on a mandrel configured to be deployed into a wellbore. The swellable element is disposed around the tubular member, and has segments of different cross link densities, with the segments configured to provide a varying cross link density in the swelleable element along a thickness of the swellable element, an azimuth of the swellable element, or both.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 26, 2011
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Nitin Y. Vaidya, Evgeny Barmatov
  • Publication number: 20110036577
    Abstract: Solid material required at a subterranean location is supplied from the surface suspended in a carrier liquid and agglomerated below ground by means of a binding liquid. Agglomeration is achieved by arranging that the binding liquid and the particulate solid are similar to each other but opposite to the carrier liquid in hydrophilic/hydrophobic character. The solid and the binding liquid may both be hydrophobic while the carrier liquid is hydrophilic, or vice versa. The solid may be hydrophobically surface modified to render it hydrophobic. The binding liquid may be provided as a precursor which converts to the binding liquid below ground to trigger agglomeration after arrival at the subterranean location. The agglomerates may function as proppant heterogeneously placed in a fracture of a reservoir, or may serve to block an unwanted path of flow. The binding liquid may polymerise after agglomeration so as to stabilise and strengthen the agglomerates.
    Type: Application
    Filed: August 11, 2009
    Publication date: February 17, 2011
    Applicant: Schlumberger Technology Corporation
    Inventors: Evgeny Barmatov, Jill Geddes, Trevor Hughes, Dean Willberg, Bruce Mackay
  • Patent number: 7417246
    Abstract: Disclosed herein is an organic thin film transistor comprising a substrate, a gate electrode, an organic insulating layer, an organic active layer and source/drain electrodes, wherein the interface between the organic insulating layer and the organic active layer is of relief structure. According to the present invention, an organic thin film transistor of enhanced electric properties can be obtained regardless of the organic insulating materials used.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: August 26, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung Han Shin, Eun Mi Seo, Kook Min Han, Evgeny Barmatov, Valery Shibaev