Patents Assigned to SCHLUMBERGER TECHNOLOGIES CORPORATION
  • System and method for protecting a submersible motor
    Patent number: 7741744
    Abstract: A technique is provided to facilitate pumping of fluids in a well. A submersible pumping system utilizes a submersible motor to power a submersible pump. A motor protector works in cooperation with the submersible motor to protect motor fluid within the submersible motor and to reduce differential pressures between the internal motor fluid and the external well fluid. The motor protector incorporates a piston slidably sealed within an interior cavity of the motor protector for movement to reduce undue differential pressures.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: June 22, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Arthur I. Watson, Michael H. Du, John D. Rowatt
  • Method of forming controlled thickness resilient material lined stator
    Patent number: 7739792
    Abstract: The present invention relates to a resilient material lined stator and method of forming. A method of forming a resilient material lined stator can include disposing a resilient material tube 400 with a profiled helical inner surface 401 into the bore of a body 420. A cast material 410 can be disposed therebetween. The cast material 410 can bond to the body 420 to form a resilient material lined stator or the body 420 can be removed. The cast material 310 can include a conduit 312 or conductor 314 extending therethrough. The cast material 310 can include a pathway 316 formed therethrough. The resilient material can be an elastomer.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: June 22, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Lawrence Lee, Michael Shepherd
  • Centrifugal pump for abrasive fluid
    Patent number: 7740447
    Abstract: A centrifugal pump for abrasive fluid. The pump may include a bearing housing mounted to a tank containing an abrasive fluid. The bearing housing may house wear-susceptible components in a manner distancing and isolating the components from the fluid. A shaft may be coupled to the bearing housing and disposed through the tank to an impeller for dispensing the abrasive fluid beyond the centrifugal pump. Additionally the impeller itself may be housed within an impeller housing that is mechanically coupled to the bearing housing in order to enhance dimensional stability therebetween. Such a centrifugal pump may be coupled to other pumps such as higher pressure positive displacement pumps. In these circumstances the centrifugal pump may be used to facilitate the mixing of the abrasive fluid and provide a degree of pressurization thereto in advance of the fluid's use at an operation site.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: June 22, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Jean-Louis Pessin, Josh Rayner, Laurent Coquilleau, Michael Woodmansee
  • Pressure relief actuated valves
    Patent number: 7740075
    Abstract: An embodiment of a valve that is operable from one position to another position upon relief of an applied pressure includes a housing having a bore; a valve member disposed with the housing, wherein the valve member is actuated to one position in response to a certain applied pressure and actuates toward another position upon relief of the certain applied pressure; and a relief system relieving the pressure applied to the valve member when the applied pressure falls below a selected pressure level.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: June 22, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Paul G. Goughnour, Russell A. Johnston
  • Time-lapsed diffusivity logging for monitoring enhanced oil recovery
    Patent number: 7741841
    Abstract: The use of time-lapsed NMR diffusivity measurements in an observation well is disclosed. The observation well is cased in the zone of interest with non-magnetic and non-conductive casing that is invisible to the NMR tool. Second, because NMR measurements have a dead zone in front of the antenna depending on the spatial variation of the fixed magnet strength, for example about 2.7 inches, a distance between the casing and the formation is reduced to less than the dead zone length by drilling the observation well at small deviation of about 5° and running the casing without centralizers. Both the casing and the pad-type NMR tool will follow the low side of the borehole, ensuring the measurement volume of the NMR tool is inside the formation and beyond the annulus.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: June 22, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: John Edwards, Hemant K. J. Ladva
  • Surfactants not toxic to bacteria
    Patent number: 7741252
    Abstract: An oilfield treatment method is given that uses fluids that contain surfactants used as foamers and/or viscosifiers such that the fluids pass the Alberta Energy and Utilities Board Directive 27 requirements for low toxicity to certain bioluminescent bacteria. Such fluids may be used in oilfield treatments, for example drilling and stimulation, near fresh water aquifers. The surfactants are certain non-ionic surfactants that are not aromatic, or certain amphoteric surfactants (that can be neutral), or certain zwitterionic surfactants, (in which both positive and negative charges are present in a single molecule so that the whole molecule is neutral).
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: June 22, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Yiyan Chen, Richard Marcinew, Carlos Abad
  • MITIGATING PERFORATING GUN SHOCK
    Publication number: 20100147519
    Abstract: A wellbore tool string includes a perforating gun having a plurality of explosive perforating charges and a shock mitigation tool. The shock mitigation tool including a tubular body having a top end, a bottom end, and a chamber; a barrier disposed proximate the bottom end in communication with the chamber; and a plurality of actuators connected with the body proximate to the top end of the body, each actuator opening a port in the body providing fluid communication with the chamber when the plurality of actuators are activated.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Kenneth Goodman
  • RUGGED QUARTZ CLOCK
    Publication number: 20100148782
    Abstract: A resonator clock suitable for use in downhole conditions is described. The resonator clock includes a resonator portion of piezoelectric material; two electrodes in electrical communication with the resonator portion such that the resonator portion resonates when voltage is applied between the two electrodes; and four supports to support the resonator portion. The supports are dimensioned and positioned to support the resonator portion under shock and vibration encountered in downhole use. The supports and the resonator portion are formed from the same continuous piece of piezoelectric material.
    Type: Application
    Filed: December 15, 2008
    Publication date: June 17, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: NORIYUKI MATSUMOTO
  • METHOD OF DRIVING AN INJECTOR IN AN INTERNAL INJECTION BETATRON
    Publication number: 20100148705
    Abstract: A betatron magnet, the betatron magnet comprising at least one electron injector positioned approximate an inside of a radius of an betatron orbit, such that electrons are injected into the betatron orbit with the at least one electron injector positioned within an electron acceleration passageway, whereby the electron acceleration passageway is located within a vacuum chamber; and wherein the at least one electron injector is driven with an inductive means.
    Type: Application
    Filed: December 14, 2008
    Publication date: June 17, 2010
    Applicant: Schlumberger Technology Corporation
    Inventor: Felix K. Chen
  • USE OF BARITE AND CARBON FIBERS IN PERFORATING DEVICES
    Publication number: 20100147504
    Abstract: Disclosed are compositions that comprise mixtures of barite and carbon fiber material and further may include steel and a binder. The compositions may be utilized for manufacturing perforator devices, including perforating guns.
    Type: Application
    Filed: December 11, 2008
    Publication date: June 17, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Allan W. King
  • WELL COMPLETION APPARATUS AND METHODS
    Publication number: 20100147587
    Abstract: A wellbore tool includes a perforating charge adapted to create a tunnel in a subterranean formation upon activation; a propellant that provides a pressure cycle when activated; and a delay device operationally connected to the perforating charge and the propellant to activate the perforating charge and the propellant in a manner to influence a selected wellbore condition.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Steven Henderson, Robert Ference, Moises Smart
  • PACKAGING FOR DOWNHOLE PRESSURE TRANSDUCERS
    Publication number: 20100147083
    Abstract: Methods and related systems are described for a sealed housing for downhole transducers. The housing system includes a housing body and a transducer positioned within the housing body, and one or more flexible members sealably mounted on the housing body. The flexible members each have one or more undulations which facilitate movement of the flexible member in directions primarily perpendicular to the surface of the flexible member. The dimensions of the one or more undulations are designed so as to optimize the ability of the movements of the member thereby accommodating volume changes in the sealed housing. A substantial amount of compensating material can also be positioned within the housing body. The compensating material has a coefficient of thermal expansion substantially less than that of the housing material.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Wei-Heong Tan, Noriyuki Matsumoto
  • ANALYSIS OF FRACTURE NETWORKS
    Publication number: 20100149913
    Abstract: A method of analysing the dynamic behaviour of fracture networks in a seismic volume is provided. The method includes providing a plurality of seismic time lapse vintages of the same geological volume; identifying and parameterising fractures within fracture networks of each vintage; determining one or more distributions of fracture parameters for the fracture networks of each vintage; and identifying changes to the fracture networks by comparing corresponding distributions across the vintages.
    Type: Application
    Filed: December 3, 2009
    Publication date: June 17, 2010
    Applicant: Schlumberger Technology Corporation
    Inventors: Berengere Savary-Sismondini, Hilde Grude Borgos, Michael Nickel, Lars Sonneland
  • MICROFLUIDIC METHODS AND APPARATUS TO PERFORM IN SITU CHEMICAL DETECTION
    Publication number: 20100147065
    Abstract: Example microfluidic methods and apparatus to perform in situ chemical detection are disclosed. A disclosed example downhole apparatus comprises a microfluidic chamber to introduce a microfluidic-scale drop of a reagent into a formation fluid to form a mixed fluid, a flowline to fluidly couple the formation fluid from a geologic formation to the microfluidic chamber, and a detector to measure a property of the mixed fluid, the property representative of a presence of a chemical in the formation fluid.
    Type: Application
    Filed: December 15, 2008
    Publication date: June 17, 2010
    Applicant: Schlumberger Technology Corporation
    Inventors: WEI HEONG TAN, CHRISTOPHER HARRISON, TSUTOMU YAMATE
  • WELLBORE TREATMENT FLUID
    Publication number: 20100152068
    Abstract: A water-based wellbore treatment fluid contains: one or more viscoelastic-gelling carboxylic acids and/or alkali metal salts thereof; and one or more solubilising alkylolamines. The carboxylic acids and/or alkali metal salts and the alkylolamines are present in the fluid in respective amounts such that, at 25° C., the alkylolamines solubilise a sufficient portion of the carboxylic acids and/or alkali metal salts to render the fluid viscoelastic. A remaining portion of the carboxylic acids and/or alkali metal salts forms a suspension of solid particulates in the fluid.
    Type: Application
    Filed: February 19, 2008
    Publication date: June 17, 2010
    Applicant: Schlumberger Technology Corporation
    Inventors: Robert Seth Hartshorne, Trevor Lloyd Hughes, Timothy Gareth John Jones, Gary John Tustin, James Francis Westwood
  • RIG CONTROL SYSTEM ARCHITECTURE AND METHOD
    Publication number: 20100147589
    Abstract: The present application discloses a method and framework for drilling rig supervisory control automation that includes replication and aggregation of drilling rig supervisory control panels, a mechanism to manipulate the supervisory control panel parameters using one or more smart algorithms and a method and technique to access the supervisory control panels from a remote location. The system and method further includes recording, editing, and playing back a drilling rig's supervisory control parameter sequence during any typical drilling rig operation. Such a sequence includes recording all of the actions involved in a specific operation of the drilling rig operator. This sequence is saved, and can be edited to optimize the sequence, and further played back on the rig from which it was recorded, or on any other rig in the network.
    Type: Application
    Filed: December 17, 2008
    Publication date: June 17, 2010
    Applicant: Schlumberger Technology Corporation
    Inventor: Mochammad Faisal Wingky
  • INJECTION WELL SURVEILLANCE SYSTEM
    Publication number: 20100147511
    Abstract: A method for surveillance of a well includes the steps of providing a pumping system in a wellbore that penetrates a formation; producing a fluid from the formation into the wellbore; injecting a fraction of the fluid from the wellbore into the formation via operation of the pumping system; surveying the pumping system in real-time via a sensor that senses well data; determining in real-time the correlation of a well parameter with a preselected threshold well parameter, wherein the well parameter is related to the sensed well data; and outputting a signal in response to the well parameter exceeding the preselected threshold parameter.
    Type: Application
    Filed: December 11, 2008
    Publication date: June 17, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Albert G. Ollre
  • SYSTEM AND METHOD FOR QUALITATIVE AND QUANTITATIVE ANALYSIS OF GASEOUS COMPONENTS OF MULTIPHASE HYDROCARBON MIXTURES
    Publication number: 20100148780
    Abstract: Embodiments of the present invention provide systems and methods for detection and/or measurement of gaseous components of multiphase mixtures containing one or more hydrocarbons that may be retrieved down a wellbore or may be being transported in a pipeline. More specifically, but not by way of limitation, embodiments of the present invention may provide for separation of the gaseous components from the multiphase mixtures and detection and/or measurement of the separated gaseous components by direct oxidation or reduction.
    Type: Application
    Filed: September 21, 2007
    Publication date: June 17, 2010
    Applicant: Schlumberger Technology Corporation
    Inventors: Jimmy Lawrence, Nathan Lawrence, Kay Robinson
  • APPARATUS AND METHOD FOR MOUNTING ACOUSTIC SENSORS CLOSER TO A BOREHOLE WALL
    Publication number: 20100147590
    Abstract: An interchangeable sleeve for a downhole tool includes a substantially cylindrical body configured to circumferentially engage the downhole tool, a blade extending radially from the body, and a transducer disposed within the blade. A drilling assembly includes a drill collar, an interchangeable blade configured to couple to the drill collar, and a transducer disposed within the blade. A size of the blade and a size of the transducer are selected based on a diameter of a borehole in which the downhole tool is to be used. A method of manufacturing an interchangeable sleeve for a downhole tool includes forming a blade on a body of the sleeve such that the blade extends radially from the body, disposing a transducer within the blade, and configuring the sleeve to circumferentially engage the downhole tool.
    Type: Application
    Filed: December 11, 2008
    Publication date: June 17, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Jan Stefan Morley, Alain Dumont
  • HIGH VOLTAGE MOTOR WINDINGS
    Publication number: 20100148623
    Abstract: An electric submersible pump (ESP) includes a pump and an electric motor operationally connected to the pump, the electric motor includes a rotor; a stator having a plurality of stator slots; a plurality of magnet wires positioned in each stator slot; and a member positioned within the stator slot, the member maintaining the magnet wires substantially parallel to one another.
    Type: Application
    Filed: December 15, 2008
    Publication date: June 17, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Joseph Liu