Patents by Inventor Christopher N. Fredd

Christopher N. Fredd 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: 9915137
    Abstract: A method of fracturing multiple zones within a wellbore formed in a subterranean formation is carried out by forming flow-through passages in two or more zones within the wellbore that are spaced apart from each other along the wellbore. The flow-through passages are arranged into clusters, where the directions of all flow-through passages, which belong to the same cluster, are aligned within a single plane (cluster plane). At least one cluster of flow-through passages is formed in each zone. The clusters within each zone have characteristics different from those of other zones provided by orienting the cluster planes at different angles relative to principal in-situ stresses and by placing them into different locations along the wellbore in each of the two or more zones. A propellant pre-fracturing treatment is then performed in the two or more zones to create initial fractures (pre-fractures) in each of the two or more zones.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: March 13, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Olga Petrovna Alekseenko, Alexander F. Zazovsky, Dmitriy Ivanovich Potapenko, Christopher N. Fredd
  • Patent number: 9458710
    Abstract: A method is given for fracturing a formation, in particular far-field in a tight formation, in which at least a portion of the proppant is crushable in situ at some point during pumping, during fracture closure, or at higher stresses experienced later during fracture closure. The closure stress or hydrostatic stress is estimated, then a proppant is selected that is at least partially crushable at that closure stress, and then the fracturing treatment is performed with at least a portion of the total proppant being the selected crushable proppant.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: October 4, 2016
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Sergey Mikhailovich Makarychev-Mikhailov, Richard D. Hutchins, Christopher N. Fredd
  • Patent number: 9447673
    Abstract: A proppant pack may be formed in a fracture that extends from a wellbore formed in a subterranean formation and is accomplished through different methods. The methods involve providing multiple spaced apart proppant slugs within a hydraulic fracturing fluid that is introduced into the wellbore at a pressure above the fracturing pressure of the formation.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: September 20, 2016
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Anatoly Vladimirovich Medvedev, Oleg Medvedev, Alexander Vuacheslavovich Mikhaylov, Christopher N. Fredd, Kreso Kurt Butula, John Lassek, J. Ernest Brown, Konstantin Mikhailovich Lyapunov
  • Patent number: 9353307
    Abstract: Methods useful in oil and gas production include producing a degradable (hydrolysable) polymer emulsion for downhole operations by mixing a degradable (hydrolysable) polymer solution with a treatment fluid using intense stirring to produce a stable emulsion at surface conditions, and allowing the degradable (hydrolysable) polymer emulsion to controllably decompose in downhole conditions to produce droplets of sticky polymer
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: May 31, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Dean Willberg, Christopher N. Fredd, Vadim Kamilievich Khlestkin, Denis Olegovich Menshikov
  • Patent number: 9121272
    Abstract: A method of fracturing multiple zones within a wellbore formed in a subterranean formation is carried out by forming flow-through passages in two or more zones within the wellbore that are spaced apart from each other along the length of a portion of the wellbore. The flow-through passages within each zone have different characteristics provided by orienting the flow-through passages in directions in each of the two or more zones relative to a selected direction to provide differences in fracture initiation pressures within each of the two or more zones. A fracturing fluid is introduced into the wellbore in a fracturing treatment. The fracturing fluid in the fracturing treatment is provided at a pressure that is above the fracture initiation pressure of one of the two or more zones to facilitate fracturing of said one of two or more zones while remaining below the fracture initiation pressure of any other non-fractured zones of the two or more zones.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: September 1, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Dmitry Ivanovich Potapenko, Bruno Lecerf, Olga Petrovna Alekseenko, Christopher N Fredd, Elena Nikolaevna Tarasova, Oleg Medvedev, Matthew Robert Gillard
  • Publication number: 20150240613
    Abstract: A method of fracturing multiple zones within a wellbore formed in a subterranean formation is carried out by forming flow-through passages in two or more zones within the wellbore that are spaced apart from each other along the wellbore. The flow-through passages are arranged into clusters, where the directions of all flow-through passages, which belong to the same cluster, are aligned within a single plane (cluster plane). At least one cluster of flow-through passages is formed in each zone. The clusters within each zone have characteristics different from those of other zones provided by orienting the cluster planes at different angles relative to principal in-situ stresses and by placing them into different locations along the wellbore in each of the two or more zones. A propellant pre-fracturing treatment is then performed in the two or more zones to create initial fractures (pre-fractures) in each of the two or more zones.
    Type: Application
    Filed: May 11, 2015
    Publication date: August 27, 2015
    Inventors: Olga Petrovna Alekseenko, Alexander F. Zazovsky, Dmitry Ivanovich Potapenko, Christopher N. Fredd
  • Publication number: 20150204178
    Abstract: A method is given for treating a wellbore in a subterranean formation by hydraulic fracturing, slickwater fracturing, gravel packing, and the like, by using plate-like materials as some or all of the proppant or gravel. The plate-like materials are particularly useful in complex fracture systems, for example in shales. They may be used as from about 20 to about 100% of the proppant. Relative to conventional proppants, plate-like proppants demonstrate (a) enhanced crush resistance of the proppant due to better stress distribution among proppant particles, (b) diminished proppant embedment into formation fracture faces due to the greater contact surface area of proppant particles with the formation, (c) better proppant transport due to lower proppant settling rates, (d) deeper penetration into branched and fine fracture networks, and (e) enhanced proppant flowback control. Preferred plate-like proppants are layered rocks and minerals; most preferred is mica.
    Type: Application
    Filed: March 30, 2015
    Publication date: July 23, 2015
    Inventors: Dean Willberg, Christopher N. Fredd, Dina Goloshchapova, Sergey Mikhailovich Makarychev-Mikhailov
  • Patent number: 9034802
    Abstract: The invention provides an oilfield suspending friction reducer treatment composition fluid comprising from about 0.001 weight percent to about 0.5 weight percent of a drag reducing surfactant; at least one drag reducing enhancer selected from the group consisting of polymeric drag reduction enhancers, monomeric drag reduction enhancers, and mixtures thereof.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: May 19, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Alex Ahrenst, Bernhard Lungwitz, Christopher N. Fredd, Carlos Abad, Nihat Gurmen, Yiyan Chen, John Lassek, Paul Howard, William Troy Huey, Zakir Azmi, Donald Hodgson, III, Oscar Bustos
  • Patent number: 9034806
    Abstract: Methods for treating a subterranean formation penetrated by a wellbore where shear recovery time of viscoelastic surfactant treatment fluids is shorten by adding an effective amount of an fiber based rheology enhancer. The rheology enhancer also increases fluid viscosity. Further, the rheology enhancer also improves proppant settling. Some examples of surfactants are betaines and quaternary amines, and an example of fiber based rheology enhancer is polylactic acid fiber. The fluids are useful in oilfield treatments, as well as methods of preparing viscoelastic surfactant based fluids.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: May 19, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: M. Nihat Gurmen, Christopher N. Fredd
  • Patent number: 9027641
    Abstract: A method of fracturing multiple zones within a wellbore formed in a subterranean formation is carried out by forming flow-through passages in two or more zones within the wellbore that are spaced apart from each other along the wellbore. The flow-through passages are arranged into clusters, where the directions of all flow-through passages, which belong to the same cluster, are aligned within a single plane (cluster plane). At least one cluster of flow-through passages is formed in each zone. The clusters within each zone have characteristics different from those of other zones provided by orienting the cluster planes at different angles relative to principal in-situ stresses and by placing them into different locations along the wellbore in each of the two or more zones. A propellant pre-fracturing treatment is then performed in the two or more zones to create initial fractures (pre-fractures) in each of the two or more zones.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: May 12, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Olga Petrovna Alekseenko, Alexander F Zazovsky, Dmitry Ivanovich Potapenko, Christopher N Fredd
  • Patent number: 8991494
    Abstract: A method is given for treating a wellbore in a subterranean formation by hydraulic fracturing, slickwater fracturing, gravel packing, and the like, by using plate-like materials as some or all of the proppant or gravel. The plate-like materials are particularly useful in complex fracture systems, for example in shales. They may be used as from about 20 to about 100% of the proppant. Relative to conventional proppants, plate-like proppants demonstrate (a) enhanced crush resistance of the proppant due to better stress distribution among proppant particles, (b) diminished proppant embedment into formation fracture faces due to the greater contact surface area of proppant particles with the formation, (c) better proppant transport due to lower proppant settling rates, (d) deeper penetration into branched and fine fracture networks, and (e) enhanced proppant flowback control. Preferred plate-like proppants are layered rocks and minerals; most preferred is mica.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: March 31, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Dean Willberg, Christopher N Fredd, Dina Andreevna Goloshchapova, Sergey Mikhailovich MakaryChev-Mikhailov
  • Publication number: 20150060066
    Abstract: This invention relates to oil and gas production, more specifically, to the methods of producing polymer emulsion for downhole operations and mixing degradable (hydrolysable) polymer emulsion with the treatment fluid.
    Type: Application
    Filed: August 4, 2014
    Publication date: March 5, 2015
    Inventors: Dean Willberg, Christopher N. Fredd, Vadim Kamilievich Khlestkin, Denis Olegovich Menshikov
  • Patent number: 8794325
    Abstract: This invention relates to oil and gas production, more specifically, to the methods of producing polymer emulsion for downhole operations and mixing degradable (hydrolysable) polymer emulsion with the treatment fluid.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: August 5, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Dean Willberg, Christopher N Fredd, Vadim Kamilievich Khlestkin, Denis Olegovich Menshikov
  • Patent number: 8657002
    Abstract: A method for minimizing the amount of metal crosslinked viscosifier necessary for treating a wellbore with proppant or gravel is given. The method includes using fibers to aid in transporting, suspending and placing proppant or gravel in viscous carrier fluids otherwise having insufficient viscosity to prevent particulate settling. Fibers are given that have properties optimized for proppant transport but degrade after the treatment into degradation products that do not precipitate in the presence of ions in the water such as calcium and magnesium. Crosslinked polymer carrier fluids are identified that are not damaged by contaminants present in the fibers or by degradation products released by premature degradation of the fibers.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: February 25, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Dean M. Willberg, Christopher N. Fredd, Marina Bulova
  • Patent number: 8646529
    Abstract: A method of well treatment includes establishing fluid connectivity between a wellbore and at least one target zone for treatment within a subterranean formation. The method includes injecting a treatment composition into the wellbore. The method includes contacting a subterranean formation with the treatment composition, providing a diversion agent to a desired interval in the wellbore and measuring a wellbore parameter while performing at least one of the contacting the target zone and the providing the diversion agent.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: February 11, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: William Ernest Clark, Doug Bentley, John Daniels, Christopher N. Fredd, Charles Miller, John Lassek
  • Publication number: 20130168082
    Abstract: A method of well treatment includes establishing fluid connectivity between a wellbore and at least one target zone for treatment within a subterranean formation. The method includes injecting a treatment composition into the wellbore. The method includes contacting a subterranean formation with the treatment composition, providing a diversion agent to a desired interval in the wellbore and measuring a wellbore parameter while performing at least one of the contacting the target zone and the providing the diversion agent.
    Type: Application
    Filed: July 12, 2012
    Publication date: July 4, 2013
    Inventors: W. E. Clark, Doug Bentley, John Daniels, Christopher N. Fredd, Charles Miller, John Lassek
  • Publication number: 20130161003
    Abstract: Embodiments of hydraulic fracturing methods disclosed herein use fine mesh proppant. In one embodiment the method is used to fracture a low permeability formation. In one embodiment the method uses flocculation to improve conductivity of a fracture. In one embodiment fluid flow through the fine mesh proppant in the fracture creates a network of connected channels to improve the fracture conductivity.
    Type: Application
    Filed: December 31, 2009
    Publication date: June 27, 2013
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Sergey Mikhailovich Makarychev-Mikhailov, Christopher N. Fredd, Trevor Hughes, Evgeny Borisovich Barmatov, Jill F. Geddes
  • Publication number: 20130105166
    Abstract: A proppant pack may be formed in a fracture that extends from a wellbore formed in a subterranean formation is accomplished through different methods. The methods involve providing multiple spaced apart proppant slugs with in a hydraulic fracturing fluid that is introduced into the wellbore at a pressure above the fracturing pressure of the formation.
    Type: Application
    Filed: May 17, 2010
    Publication date: May 2, 2013
    Inventors: Anatoly Vladimirovich Medvedev, Oleg Medvedev, Alexander Vuacheslavovich Mikhaylov, Christopher N. Fredd, Kreso Kurt Butula, John Lassek, J. Ernest Brown, Konstantin Mikhailovich Lyapunov
  • Publication number: 20130105157
    Abstract: A method is given for diverting injected slickwater in a hydraulic fracturing treatment. The diversion fluid is preferably a substantially proppant free viscous fluid that causes a net pressure increase and plugging of some of the microfractures in the initial fracture system created, which induces formation of supplementary microfractures connected to the initial fracture network and in-creases the contact area with the formation rock. The method generates a greater fracture network complexity and thus a higher contact area with the reservoir during a single treatment cycle.
    Type: Application
    Filed: May 18, 2010
    Publication date: May 2, 2013
    Inventors: Evgeny Borisovich Barmatov, Sergey Mikhailovich Makarychev-Mikhailov, Dmitriy Ivanovich Potapenko, Christopher N. Fredd
  • Publication number: 20130032349
    Abstract: A method of fracturing multiple zones within a wellbore formed in a subterranean formation is carried out by forming flow-through passages in two or more zones within the wellbore that are spaced apart from each other along the wellbore. The flow-through passages are arranged into clusters, where the directions of all flow-through passages, which belong to the same cluster, are aligned within a single plane (cluster plane). At least one cluster of flow-through passages is formed in each zone. The clusters within each zone have characteristics different from those of other zones provided by orienting the cluster planes at different angles relative to principal in-situ stresses and by placing them into different locations along the wellbore in each of the two or more zones. A propellant pre-fracturing treatment is then performed in the two or more zones to create initial fractures (pre-fractures) in each of the two or more zones.
    Type: Application
    Filed: August 5, 2011
    Publication date: February 7, 2013
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Olga Petrovna Alekseenko, Alexander F. Zazovsky, Dmitry Ivanovich Potapenko, Christopher N. Fredd