Patents by Inventor Laura A. SCHAFER

Laura A. SCHAFER 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).

  • Publication number: 20240134357
    Abstract: An industrial communication module includes a controller and a common interface coupled to the controller. The common interface is configured to couple to a plurality of different types of sensor modules. The industrial communication module includes protocol/output circuitry coupled to the controller and configured to provide an output to a remote device. A sensor module includes a controller and a common interface coupled to the controller. The common interface is configured to couple to a plurality of different types of industrial communication modules. The sensor module includes measurement processing circuitry coupled to the controller and configured to measure an analog electrical characteristic of a sensor and provide a digital indication of the measured analog electrical characteristic to the controller.
    Type: Application
    Filed: October 19, 2023
    Publication date: April 25, 2024
    Inventors: Jason h. RUD, Laura A. SCHAFER, Theodore H. SCHNAARE, Cory M. ROBINSON, Eric R. LOVEGREN, Robert M. WEINBERGER, Greg E. GINDELE, James A. JOHNSON, Ryan C. TARRAS, Ryan T. LINDSEY
  • Publication number: 20110251111
    Abstract: A wellbore treatment fluid is formed from an aqueous medium, a gas component, a viscosifying agent, and a surfactant. The surfactant is represented by the chemical formula: [R—(OCH2CH2)m—Oq—YOn]pX wherein R is a linear alkyl, branched alkyl, alkyl cycloaliphatic, or alkyl aryl group; O is an oxygen atom; Y is either a sulfur or phosphorus atom; m is 1 or more; n is a integer ranging from 1 to 3; p is a integer ranging from 1 to 4; q is a integer ranging from 0 to 1; and X is a cation. The fluid may be used in treating a subterranean formation penetrating by a wellbore by introducing the fluid into the wellbore. The fluid may be used in fracturing a subterranean formation penetrated by a wellbore by introducing the fluid into the formation at a pressure equal to or greater than the fracture initiation pressure.
    Type: Application
    Filed: June 24, 2011
    Publication date: October 13, 2011
    Inventors: Lijun Lin, Carlos Abad, Bruno Drochon, Gregory Kubala, Laura Schafer, Alejandro Pena, Ramsey Buoy
  • Patent number: 7998909
    Abstract: A wellbore treatment fluid is formed from an aqueous medium, a gas component, a viscosifying agent, and a surfactant. The surfactant is represented by the chemical formula: [R—(OCH2CH2)m—Oq—YOn]pX wherein R is a linear alkyl, branched alkyl, alkyl cycloaliphatic, or alkyl aryl group; O is an oxygen atom; Y is either a sulfur or phosphorus atom; m is 1 or more; n is a integer ranging from 1 to 3; p is a integer ranging from 1 to 4; q is a integer ranging from 0 to 1; and X is a cation. The fluid may be used in treating a subterranean formation penetrating by a wellbore by introducing the fluid into the wellbore. The fluid may be used in fracturing a subterranean formation penetrated by a wellbore by introducing the fluid into the formation at a pressure equal to or greater than the fracture initiation pressure.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: August 16, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Lijun Lin, Carlos Abad, Bruno Drochon, Gregory Kubala, Laura Schafer, Alejandro Pena, Ramsey Buoy
  • Patent number: 7947627
    Abstract: A fluid loss control pill or solution includes a polymer having a functional group that can be hydrolyzed by a base or a nucleophile. A method for fluid loss control in a subterranean formation includes placing a fluid loss control pill or solution in a wellbore penetrating the subterranean formation, wherein the fluid loss control pill or solution comprises a polymer having a functional group that can be hydrolyzed by a base or a nucleophile; and converting the polymer into a soluble form by hydrolyzing the functional group with a base or a nucleophile, when fluid loss control is no longer needed.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: May 24, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Ann M. W. Hoefer, Laura Schafer
  • Publication number: 20100323933
    Abstract: Embodiments of this invention relate to a composition and a method for dissolving a filtercake in a subterranean formation comprising forming a mixture comprising a dissolution fluid and a fluid comprising hydrocarbon; introducing the mixture into a subterranean formation containing a filtercake; introducing an aqueous fluid to the mixture; and dissolving the filtercake. Embodiments of this invention also relate to further exposing the mixture to swellable packer. Embodiments of this invention relate to a method for a composition, comprising a fluid comprising hydrocarbon; and a dissolution fluid, wherein the fluid comprising hydrocarbon and dissolution fluid are combined to form a miscible mixture that dissolves a filtercake in a subterranean formation.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 23, 2010
    Inventors: Michael J. Fuller, Laura Schafer, Bipin Jain
  • Patent number: 7832476
    Abstract: A method of introducing friction reducing agents within a wellbore penetrating a subterranean formation during a gravel packing operation is accomplished by providing a length of tubing located downhole within the wellbore for conducting fluids within the wellbore through the tubing during circulating of gravel packing fluids introduced from the surface within the wellbore. At least a portion of the tubing is surrounded by a screen for screening out particulate matter during the gravel packing operation. An annular space is defined between an interior of the screen and the exterior of the tubing. A friction reducing agent is dispensed from a dispensing apparatus that locates downhole with the tubing. The dispensing apparatus includes a housing and a chamber disposed within the housing that has one or more outlets that open into the annular space defined by the screen and tubing for dispensing the friction reducing agent.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: November 16, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Laura Schafer, Carlos Abad
  • Patent number: 7631695
    Abstract: A method of completing a wellbore includes the steps of connecting an isolation tool to a conveyance, the isolation tool including a tubular base member having an internal bore and an outer housing forming a first chamber and a second chamber separated by a wall; the first chamber having a first inlet port in communication with the internal bore and a first outlet port formed through the housing; the second chamber having first inlet port in communication with the internal bore and a second outlet port formed through the housing; a first material disposed in the first chamber; and a second material disposed in the second chamber; running the conveyance into the wellbore, an annulus formed between the isolation tool and sidewall of the wellbore; and activating the isolation tool to form a barrier to fluid flow in the annulus.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: December 15, 2009
    Assignee: Schlumberger Technology Corporation
    Inventors: Laura Schafer, John R. Whitsitt
  • Publication number: 20090101364
    Abstract: A method of completing a wellbore includes the steps of connecting an isolation tool to a conveyance, the isolation tool including a tubular base member having an internal bore and an outer housing forming a first chamber and a second chamber separated by a wall; the first chamber having a first inlet port in communication with the internal bore and a first outlet port formed through the housing; the second chamber having first inlet port in communication with the internal bore and a second outlet port formed through the housing; a first material disposed in the first chamber; and a second material disposed in the second chamber; running the conveyance into the wellbore, an annulus formed between the isolation tool and sidewall of the wellbore; and activating the isolation tool to form a barrier to fluid flow in the annulus.
    Type: Application
    Filed: October 22, 2007
    Publication date: April 23, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Laura Schafer, John R. Whitsitt
  • Publication number: 20090090506
    Abstract: A method of introducing friction reducing agents within a wellbore penetrating a subterranean formation during a gravel packing operation is accomplished by providing a length of tubing located downhole within the wellbore for conducting fluids within the wellbore through the tubing during circulating of gravel packing fluids introduced from the surface within the wellbore. At least a portion of the tubing is surrounded by a screen for screening out particulate matter during the gravel packing operation. An annular space is defined between an interior of the screen and the exterior of the tubing. A friction reducing agent is dispensed from a dispensing apparatus that locates downhole with the tubing. The dispensing apparatus includes a housing and a chamber disposed within the housing that has one or more outlets that open into the annular space defined by the screen and tubing for dispensing the friction reducing agent.
    Type: Application
    Filed: October 4, 2007
    Publication date: April 9, 2009
    Inventors: Laura Schafer, Carlos Abad
  • Publication number: 20080142220
    Abstract: A fluid loss control pill or solution includes a polymer having a functional group that can be hydrolyzed by a base or a nucleophile. A method for fluid loss control in a subterranean formation includes placing a fluid loss control pill or solution in a wellbore penetrating the subterranean formation, wherein the fluid loss control pill or solution comprises a polymer having a functional group that can be hydrolyzed by a base or a nucleophile; and converting the polymer into a soluble form by hydrolyzing the functional group with a base or a nucleophile, when fluid loss control is no longer needed.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 19, 2008
    Inventors: Ann M.W. Hoefer, Laura Schafer
  • Publication number: 20080081771
    Abstract: A wellbore treatment fluid is formed from an aqueous medium, a gas component, a viscosifying agent, and a surfactant. The surfactant is represented by the chemical formula: [R—(OCH2CH2)m—Oq—YOn]pX wherein R is a linear alkyl, branched alkyl, alkyl cycloaliphatic, or alkyl aryl group; O is an oxygen atom; Y is either a sulfur or phosphorus atom; m is 1 or more; n is a integer ranging from 1 to 3; p is a integer ranging from 1 to 4; q is a integer ranging from 0 to 1; and X is a cation. The fluid may be used in treating a subterranean formation penetrating by a wellbore by introducing the fluid into the wellbore. The fluid may be used in fracturing a subterranean formation penetrated by a wellbore by introducing the fluid into the formation at a pressure equal to or greater than the fracture initiation pressure.
    Type: Application
    Filed: August 23, 2007
    Publication date: April 3, 2008
    Inventors: Lijun Lin, Carlos Abad, Bruno Drochon, Gregory Kubala, Laura Schafer, Alejandro Pena, Ramsey Buoy
  • Patent number: 7287593
    Abstract: Treatment methods including preparation of an aqueous treatment fluid composition composed of a carboxy modified polymer, a crosslinking agent, and a viscosifying quaternary amine salt, and subsequently introducing the composition into a the formation to treat. The treatment method is particularly useful for fracturing a subterranean formation. The polymer and crosslinker may be premixed and injected into a wellbore, then mixed therein with the quaternary amine salt to treat the formation. In another aspect, the polymer, crosslinker, and quaternary amine salt are mixed, injected into a wellbore, and introduced in the formation for treatment.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: October 30, 2007
    Assignee: Schlumberger Technology Corporation
    Inventors: Richard D. Hutchins, Laura Schafer
  • Publication number: 20070089881
    Abstract: Disclosed are methods of treating subterranean formations, particularly, treatment methods including preparation of an aqueous treatment fluid composition composed of a carboxy modified polymer, a crosslinking agent, and a viscosifying quaternary amine salt, and subsequently introducing the composition into a the formation to treat. The treatment method is particularly useful for fracturing a subterranean formation. The polymer and crosslinker may be premixed and injected into a wellbore, then mixed therein with the quaternary amine salt to treat the formation. In another aspect, the polymer, crosslinker, and quaternary amine salt are mixed, injected into a wellbore, and introduced in the formation for treatment.
    Type: Application
    Filed: October 21, 2005
    Publication date: April 26, 2007
    Inventors: Richard Hutchins, Laura Schafer