Patents Represented by Attorney Shaun Sethna
  • Patent number: 7991556
    Abstract: A method for analyzing formation data includes decomposing the formation data into simple components that can be used to reconstruct the formation data, wherein the decomposing is performed at a first location and includes a process to minimize an overlap between the simple components; and transmitting parameters representing the simple components to a second location for reconstructing the formation data. A system for analyzing formation data that includes a processor and a memory that stores a program having instructions for decomposing the formation data into simple components that can be used to reconstruct the formation data, wherein the decomposing is performed at a first location and includes a process to minimize an overlap between the simple components; and transmitting parameters representing the simple components to a second location for reconstructing the formation data.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: August 2, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Jaideva C. Goswami, Denis Heliot
  • Patent number: 7986145
    Abstract: A logging tool for use in a wellbore having a sensor portion for making measurements. The tool has a sleeve enclosing the sensor portion and made of a material that is transparent to the measurements being made. One or more structural elements having physical characteristics different from the material comprising the sleeve are carried on the sleeve to enhance the mechanical properties of the sleeve.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: July 26, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Alice Sorbier, James S. Almaguer
  • Patent number: 7986144
    Abstract: A logging sonde includes a tube defining a sealed chamber inside. An isolation layer is disposed on an exterior of the tube. At least one sensor is disposed on an exterior of the isolation layer. The sensor includes a lead in passing through a wall of the tube. An elastomer jacket is disposed on an exterior of the sensor and the isolation layer. A method for making a sonde includes affixing an electrically insulating isolator to an exterior of a tube. An hydraulic seal layer is affixed over an exterior of the isolator. A sensor is affixed over the exterior of the seal layer. An electrical connection is made from the sensor to an interior of the tube through the hydraulic seal layer and through the isolator. An elastomer jacket is applied over the exterior of at least part of the sensor and the exterior of the seal layer.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: July 26, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Qingyan He, Richard Dan Ward
  • Patent number: 7893692
    Abstract: A method for estimating fluid productivity of a subsurface rock formation from within a wellbore drilled therethrough includes measuring a nuclear magnetic resonance property of the formation at a plurality of lateral depths therein. The measured nuclear magnetic resonance property is used to estimate the fluid productivity.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: February 22, 2011
    Assignee: Schlumberger Technology Corporation
    Inventor: Chanh Cao Minh
  • Patent number: 7800052
    Abstract: A method for controlling voltage applied to a photomultiplier used in a scintillation counter radiation detector includes determining numbers of voltage pulses having each of a plurality of predetermined amplitudes generated by the photomultiplier in response to radiation events being imparted to a scintillation detector. The numbers of voltage pulses at each of the predetermined amplitudes is conducted to a trained artificial neural network. The artificial neural network generates a signal corresponding to an amount of adjustment to the voltage applied to the photomultiplier.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: September 21, 2010
    Assignee: Schlumberger Technology Corporation
    Inventor: Raphael Gadot