Testing Patents (Class 166/336)
  • Patent number: 9759025
    Abstract: A method for detecting an influx in a wellbore with first and second pressure transmitters arranged in a fixed vertical distance in relation to each other. The method includes calculating an expected density of a return flow between the first and second pressure transmitters, continuously measuring an actual density of the return flow based on a measured pressure at the first and second pressure transmitters, comparing the calculated expected density of the return flow and the measured actual density of the return flow to determine the influx in the wellbore, and predicting a probability of hydrates forming in the well by measuring a temperature via a temperature transmitter arranged in a section of the well adjacent to the first and/or the second pressure transmitter, and using the temperature together with the measurements from the first and second pressure transmitters.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: September 12, 2017
    Assignee: MHWIRTH AS
    Inventor: Dag Vavik
  • Patent number: 9719484
    Abstract: An infrastructure arrangement for use in an underwater power generation installation includes a support structure adapted for engagement with a bed of a body of water, and an infrastructure module adapted to house infrastructure equipment for connection to power generating units of the installation. The infrastructure module is releasably engageable with the support structure.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: August 1, 2017
    Assignee: Tidal Generation Limited
    Inventor: Benjamin Palethorpe
  • Patent number: 9650873
    Abstract: Apparatus and methods for compensating a landing string due to movement of a floating rig platform are provided. In one aspect, a compensation system for use with a landing string is provided. The compensation system includes a slip joint member attachable to the landing string, the slip joint member having an upper portion and a lower portion. The compensation system further includes a first lock assembly configured to connect the upper portion of the slip joint member to a floating rig. Additionally, the compensation system includes a second lock assembly configured to connect the lower portion of the slip joint member to a riser disposed below the floating rig. In another aspect, a method for compensating a landing string due to movement of a floating rig is provided.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: May 16, 2017
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: David E. Mouton, Michael Hayes, Karsten Heidecke, David J. Havens, Raleigh Fisher, Jim Hollingsworth, Doyle Fredric Boutwell, Jr.
  • Patent number: 9631448
    Abstract: A technique facilitates control over flow of hydraulic actuating fluid used to perform a plurality of actuating functions in a subsea well application. A control module is employed for controlling a plurality of hydraulically controlled components and is located along a subsea test tree at a position relatively close to the hydraulically controlled components. The control module, in turn, is controlled electronically via an electric line which provides electric control signals corresponding to desired control instructions regarding the hydraulically controlled components. By moving the control module closer to the hydraulically controlled components response time is greatly reduced.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: April 25, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Gary Rytlewski
  • Patent number: 9605531
    Abstract: An intelligent test system and a method for a multi-segment fractured horizontal well. The intelligent test method for a multi-segment fractured horizontal well comprises: step A: placing a test tubular column into an underground horizontal section; step B: setting a pressure building packer and a hanging packer by means of pressurization after the test tubular column is placed into an underground designed position; step C: breaking a hydraulic release connector to separate the hydraulic release connector from a seal pipe; step D: pulling out a first oil pipe, and reserving the tubular column comprising the seal pipe and located on the downstream part of the seal pipe in a horizontal well; and step E: placing a production tubular column or a communications tubular column into a vertical section of the horizontal well.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: March 28, 2017
    Assignee: Petrochina Company Limited
    Inventors: Hong Xin, Tianshou Zhu, Lijun Mu, Wei Huang, Ming Li, Qingming Gan, Haitao Yang, Lei Zhang, Ertao Han
  • Patent number: 9574420
    Abstract: A system to control fluid flow through a fluid passage includes a valve that is fail-safe closed to selectively control fluid flow through the fluid passage, and a hydraulic actuator operatively coupled to the valve to open the valve when hydraulic pressure above a predetermined amount is received. The system further includes an inlet to provide hydraulic pressure to the hydraulic actuator and open the valve and an outlet to vent hydraulic pressure from the hydraulic actuator and close the valve.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: February 21, 2017
    Assignee: OneSubsea IP UK Limited
    Inventors: Graham Hall, Robert Large, James Duncan Trinder
  • Patent number: 9570890
    Abstract: A modular skid frame and device to reduce the potential for harm and injury from arc flashes. The modular skid frame comprises a plurality of frame members secured together to form the skid frame, and one or more hook members formed on one or more of the frame members to permit the receipt of a bucket or blade from a loader, scoop tram or other construction or mining equipment into the bowl portion and behind the bill portion of the hook member to facilitate the lifting and moving of the skid frame. Also disclosed is a device for racking a circuit breaker into and out of a circuit breaker cradle. The device comprises an actuator operatively connected to the circuit breaker cradle to permit the circuit breaker to be racked into and out of the cradle without direct or indirect contact on the part of an operator.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: February 14, 2017
    Inventor: William R. Parr
  • Patent number: 9564748
    Abstract: A conductor arrangement is for a collection of subterranean wells for recovering fluids from an underground structure. A frame is provided with several conductor guides, each forming an inlet opening for a conductor in an upper portion of the frame and an outlet opening for the conductor in a lower portion of the frame. The conductor is arranged to border a portion of a borehole towards a surrounding unconsolidated mass and has been passed through the conductor guide and down into the unconsolidated mass. The conductor guides are arranged in a mutually diverging manner in the direction from the inlet opening, and each conductor is extendable by a bend, the deflection angle of the bends providing mutually parallel center axes in coupling interfaces arranged in upper end portions of the bends.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: February 7, 2017
    Assignee: NeoDrill AS
    Inventor: Harald Strand
  • Patent number: 9523252
    Abstract: A running tool and delivery and/or retrieving apparatus, and method for use, are designed for optionally delivering and optionally retrieving an oilfield device down a borehole. A kelly extends into the borehole. The tool has a journal configured for slidable movement along the kelly, an engagement disk mounted around the journal configured for engaging the device, and a plurality of fins attached perpendicular to an outer circumference of the journal. The proximal fins extend radially from the outer circumference of the journal toward the engagement disk, are butted against the engagement disk and extend to a diameter complementary to an outer diameter of the engagement disk. The plurality of proximal fins surround and are arranged concentric with the journal.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: December 20, 2016
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Nicky A. White, James W. Chambers, Thomas F. Bailey
  • Patent number: 9353603
    Abstract: Apparatus and methods for compensating a landing string due to movement of a floating rig platform are provided. In one aspect, a compensation system for use with a landing string is provided. The compensation system includes a slip joint member attachable to the landing string, the slip joint member having an upper portion and a lower portion. The compensation system further includes a first lock assembly configured to connect the upper portion of the slip joint member to a floating rig. Additionally, the compensation system includes a second lock assembly configured to connect the lower portion of the slip joint member to a riser disposed below the floating rig. In another aspect, a method for compensating a landing string due to movement of a floating rig is provided.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: May 31, 2016
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: David E. Mouton, Michael Hayes, Karsten Heidecke, David J. Havens, Raleigh Fisher, Jim Hollingsworth, Doyle F. Boutwell, Jr.
  • Patent number: 9328579
    Abstract: A method and apparatus for circulating fluid in a wellbore includes a bottom sub having a bottom sub port and a mandrel, wherein the mandrel substantially forms an inner bore of the circulating tool and includes a mandrel port. The circulating tool may also include an activation piston that is movable in a first direction and a port piston movable in a second direction when the activation piston moves in the first direction. The circulating tool may further include an inner sleeve coupled to the port piston and movable with the port piston, the inner sleeve having an inner sleeve port in selective communication with the mandrel port. When the inner sleeve port is in communication with the mandrel port at least partially, circulating fluid is allowed to flow through the bottom sub port to the wellbore.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: May 3, 2016
    Assignee: Weatherford Technology Holdings, LLC
    Inventor: Timothy L. Wilson
  • Patent number: 9309740
    Abstract: A system, in some embodiments, for producing well production fluids through a tubing hanger connected with a production tubing string. The system includes a subsea tree with a production flow passage and a tree annulus flow passage. The system also includes a spool assembly separate from the subsea tree that includes a body with a longitudinal passage configured to receive and support the tubing hanger, there being an annulus between the production tubing string and the body. The spool assembly also includes a lateral flow passage extending from the spool longitudinal passage and configured to transfer the production fluids. Further, the system includes an annulus flow passage extending externally from the spool assembly and in fluid communication with the annulus.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: April 12, 2016
    Assignee: OneSubsea IP UK Limited
    Inventor: David R June
  • Patent number: 9127511
    Abstract: An offshore universal riser system may include a valve module which selectively permits and prevents fluid flow through a flow passage extending longitudinally through a riser string. An anchoring device may releasably secure the valve module in the passage. A method of constructing a riser system may include the steps of installing the valve module in the passage, and installing at least one annular seal module in the passage. The annular seal module may prevent fluid flow through an annular space between the riser string and a tubular string positioned in the passage. Drilling methods may include injecting relatively low density fluid compositions into the annular space, and selectively varying a restriction to flow through a subsea choke in a drilling fluid return line. The riser string, including housings for the various modules and external control systems, may be dimensioned for installation through a rotary table.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: September 8, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Charles R. Orbell, Christian Leuchtenberg, Craig W. Godfrey
  • Patent number: 9097813
    Abstract: A system for sensing a pipe joint within a well structure bore comprises a body connectable in line with the well structure. The body has a central bore therethrough and includes a plurality of blind bores extending radially inwards from the outer surface. The system further includes at least one sleeve being locatable within one of the plurality of blind bores wherein each of the sleeves has a magnet located at an end thereof at least one sensor being locatable within one of the at least one sleeves. The at least one sensor is operable to output a signal representing the width of a metallic object located within the central bore. The system may further include a display operable to receive the output signal from the at least one sensor and to display an output to a user indicating the width of the metallic object within the central bore.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: August 4, 2015
    Assignee: Intelligent Spools Inc.
    Inventor: Aaron Mitchell Carlson
  • Patent number: 9051790
    Abstract: An offshore universal riser system may include a valve module which selectively permits and prevents fluid flow through a flow passage extending longitudinally through a riser string. An anchoring device may releasably secure the valve module in the passage. A method of constructing a riser system may include the steps of installing the valve module in the passage, and installing at least one annular seal module in the passage. The annular seal module may prevent fluid flow through an annular space between the riser string and a tubular string positioned in the passage. Drilling methods may include injecting relatively low density fluid compositions into the annular space, and selectively varying a restriction to flow through a subsea choke in a drilling fluid return line. The riser string, including housings for the various modules and external control systems, may be dimensioned for installation through a rotary table.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: June 9, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Charles R. Orbell, Christian Leuchtenberg, Craig W. Godfrey
  • Patent number: 9033050
    Abstract: A plug plugs into a ROV drive bucket limiting rotation of a drive shaft therein to say 15° and reducing the build-up of marine growth in the bucket. As shown it includes a polyethylene body (which may be made in two parts 12, 13) housing a metal socket 11 mounted for limited angular orientation therein. The socket has a twenty four point aperture or recess (22) which fits over a squared end of a drive shaft 10 at various angles orientation. The socket has external splines (20) which fit loosely in wide internal grooves (21) in the body and self-orientates within the body when the body is plugged into the bucket. The plug has a pair of diametrically opposite dogs (4) which engage in slots (5), included in flanges on conventional buckets.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: May 19, 2015
    Inventor: Nicholas Long
  • Patent number: 9033048
    Abstract: Apparatuses and methods useable in drilling installations having a mud loop for detecting ongoing or imminent kick events are provided. An apparatus includes a first sensor configured to measure a input mud flow pumped into the well, and a second sensor configured to measure a variation of a return mud flow emerging from the well. The apparatus further includes a controller connected to the first sensor, and to the second sensor. The controller is configured to identify an ongoing or imminent kick event based on monitoring and comparing an evolution of the input mud flow as measured by the first sensor and an evolution of the return mud flow as inferred based on measurements received from the second sensor. Additionally, a third sensor can be included in the apparatus to confirm the conclusion made by the controller before alerting the user that a kick has likely occurred.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: May 19, 2015
    Assignee: Hydril USA Manufacturing LLC
    Inventor: Robert Arnold Judge
  • Patent number: 9022123
    Abstract: The present invention relates to an apparatus for inspecting and monitoring flexible collection and production lines in real time, rendering possible constant tracking of the condition of the internal structures of a flexible riser, specifically of the tensile armor thereof. The device may be provided at any point along the riser ensuring the establishment of an area of physical and visual contact directly over the surface of the tensile armor of the riser for the installation of equipment for analysis, which area permits further accesses without destroying the sealing of the chamber there formed.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: May 5, 2015
    Assignee: Petroleo Brasileiro S.A.-Petrobras
    Inventors: George Carneiro Campello, Sergio Ricardo Kokay Morikawa
  • Patent number: 9010438
    Abstract: A fluid treatment system comprises a fluid treatment module having a fluid inlet and first and second fluid outlets. A pump is provided to establish a first pressure differential between the fluid inlet and one of the first and second fluid outlets of the fluid treatment module, and an eductor is provided to establish a second pressure differential between the fluid inlet and the other of the first and second fluid outlets of the fluid treatment module. The pump is adapted to deliver a motive fluid to the eductor.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: April 21, 2015
    Assignee: VWS Westgarth Limited
    Inventors: Wayne Evans, Neville Ernest Lange
  • Patent number: 9010431
    Abstract: A tool for subsea installation and testing of wellhead modules such as Xmas trees and similar equipment, from a ship using a ship crane. The tool includes a subsea unit that includes a connector for releasable connection to subsea wellhead modules or equipment, means for positioning and means for testing, and a connector for electric power and electric and/or optical control.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: April 21, 2015
    Assignee: Aker Subsea AS
    Inventors: Anders Billington, Are Synnes, Christen Sovik
  • Patent number: 9004174
    Abstract: A system, apparatus, and method are provided for monitoring a subsea flow device such as a subsea flowline. The apparatus generally includes a thermoelectric device that is adapted to generate electric power from a thermal potential between the subsea flow device and the surrounding seawater. A sensor that is powered by the thermoelectric device is adapted to monitor one or more characteristics of the flow device, such as temperature or strain, and provide a radiation output that is indicative of the characteristic.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: April 14, 2015
    Assignee: Chevron U.S.A. Inc.
    Inventors: Sid Mebarkia, Ryan Lang
  • Patent number: 9000942
    Abstract: A telemetry apparatus and method for communicating data from a down-hole location through a borehole to the surface is described including a light source, an optical fiber being placed along the length of the wellbore and receiving light from the light source, a transducer located such as to produce a force field (e.g. a magnetic field) across the optical fiber and its protective hull without mechanical penetration of the hull at the down-hole location, one or more sensors for measuring down-hole conditions and/or parameters, a controller to provide a modulated signal to the magnetic field generator, said modulated signal being under operating conditions representative of measurements by the one or more sensors, and an optical detector adapted to detect changes in the light intensity or polarization of light passing through the fiber.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: April 7, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Ian Atkinson, Yuehua Chen, Arthur Hartog, Franck Monmont, Rogerio Ramos, Robert Schroeder, Jeffrey Tarvin
  • Patent number: 8985217
    Abstract: A method, device, and system for determining whether liquid enters a subsea system includes a flow line having an inside bore capable of carrying producing fluids from a subsea wellhead to a floating production storage and offloading vessel (FPSO). An annulus is defined between an innermost sheath that surrounds the inside bore and an outermost sheath at an exterior of the flow line. The device further includes a housing element disposed within the annulus and in hydraulic communication with the annulus; a sensor element disposed at a predetermined location within the housing element; and data acquisition equipment capable of: determining environmental characteristics of the annulus based on measurements made by the sensor element, and determining at least one of the presence, location, and rate of collection of liquids in the subsea system based on the environmental characteristics of the annulus.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: March 24, 2015
    Assignee: Schlumberger Technology Corporation
    Inventor: Dominic McCann
  • Patent number: 8985218
    Abstract: An example downhole tool configured for conveyance in a wellbore extending into a subterranean formation comprises a first fluid communicator configured to allow drilling fluid communication with an annulus between the downhole tool and the wellbore, a second fluid communicator configured to direct formation fluid to the annulus, and a formation testing device disposed deeper in the wellbore relative to the first fluid communicator and configured to pump formation fluid from the formation to the second fluid communicator. At least one of the first and second fluid communicators comprises a jet pump.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: March 24, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Sylvain Bedouet, Erik Quam
  • Publication number: 20150075802
    Abstract: A sampling device is for subsea fluids. The sampling device comprises: a sample container including a first chamber and a second chamber, the first and second chambers being isolated by a movable separating body, a first pressure sensing device for sensing the pressure in the first chamber of the container, and a second pressure sensing device for sensing the pressure in the second chamber of the container. The sampling device further comprises a pressure compensating device, the pressure compensating device being adapted to compensate for pressure changes in the first chamber of the container by regulating the pressure in the second chamber of the container and thereby moving the separating body. A method is for subsea fluid sampling using a sampling device.
    Type: Application
    Filed: April 2, 2013
    Publication date: March 19, 2015
    Inventors: Robert James Cowman, Edward John Rafipay, Murray George Stuart, Craig Andrew Baxter
  • Patent number: 8978766
    Abstract: A temperature compensated accumulator and method for use thereof downhole in a well. The accumulator may include a housing with separate bulkhead and piston assemblies. Thus, one assembly may include a hydraulic fluid chamber separated from a gas precharge pressure chamber by a piston and the other assembly may include an ambient pressure chamber separated from an atmospheric chamber by another piston. Additionally a pressure relief and check valve assembly may be located at a pressure relief chamber between the other assembly sections. Thus, venting to or from the gas precharge pressure chamber may take place upon exposure to a predetermined decreased or elevated temperature so as to maintain a substantially constant precharge level for the accumulator, for example, in spite of dramatic changes in downhole temperatures.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: March 17, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Peter Nellessen, Jr., Quangen Du
  • Publication number: 20150068758
    Abstract: A method of operating a system for handling an influx of gas into a marine riser during the drilling of a well bore includes the steps of operating a first riser closure apparatus to close the riser at a first point above a flow spool provided in the riser, there being a riser gas handling line extending from the riser at the flow spool to a riser gas handling manifold, operating a second riser closure apparatus to close the riser at a second point below the flow spool, pumping fluid into an inlet line which extends into the riser at a point above the second point but below the flow spool, and operating a choke provided in the riser gas handling manifold to maintain the pressure in the inlet line or the riser at a substantially constant pressure.
    Type: Application
    Filed: April 10, 2013
    Publication date: March 12, 2015
    Applicant: MANAGED PRESSURE OPERATIONS PTE LTD
    Inventors: Christian Leuchtenberg, Michael Chandra, Carlos Goncalves
  • Publication number: 20150053411
    Abstract: A system and method for channeling fluids from underwater to the surface. Including a channel system for channeling the fluids from an oil leak through the channel system starting from an underwater pipe leak to a containment reservoir at a sea surface. In one aspect, the channel system is made up of interchange parts, where some are flexible, attachable, and/or can influence the flow of the fluids inside the channel system.
    Type: Application
    Filed: September 6, 2014
    Publication date: February 26, 2015
    Inventor: Matthew O'Malley
  • Patent number: 8895484
    Abstract: Biphenylmono- and polysulphonic acids and salts thereof, fluorenemono- and polysulphonic acids and salts thereof as well as p-terphenylmono- and polysulphonic acids and salts thereof may be used successfully as tracers for surveying, monitoring and/or measuring movements of aqueous fluids in aqueous and/or non-aqueous media. Said substances are especially suited for surveying or monitoring movements of fluids in oil wells or reservoirs as well as for fluid movements in hydrothermal reservoirs.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: November 25, 2014
    Assignee: Restrack AS
    Inventor: Helge Stray
  • Patent number: 8875795
    Abstract: Method and subsea sensors display system configured to display data about a blowout preventer (BOP) stack. The subsea sensors display system includes a display panel having plural universal subsea displays, each universal subsea display being configured to display a value measured by a sensor attached to the BOP stack; and a J-box electrically connected to the display panel and configured to provide electrical power to the display panel and to receive data from the display panel. The electrical power is provided from a pod provided on the BOP stack or from a battery when the pod is not available or from a remote operated vehicle (ROV) when connected to the display panel.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: November 4, 2014
    Assignee: Hydril USA Manufacturing LLC
    Inventors: Devasish Choudhury, Zhen Liu, Jeffrey Lambert
  • Patent number: 8863836
    Abstract: The present invention is directed to methods and systems for obtaining log data on a cased wellbore concurrently with wellbore cleanout operations. In some such embodiments, a combination of at least one cleaning means and at least one logging tool are integrated or otherwise affixed to a common workstring, such that both wellbore cleanout and logging operations can be accomplished without having to remove the workstring from the well between such operations. In some such embodiments, the one or more logging tool(s) transmit information about the cased wellbore to the surface wirelessly. In some or other such embodiments, such information is transmitted via cable, in real-time or in batch mode. In some or still other such embodiments, such information is stored in memory and accessed subsequent to the workstring being extracted from the wellbore.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: October 21, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventor: Earl J. Coludrovich, III
  • Publication number: 20140262306
    Abstract: Adapters for inclusion on the lower end of a completion/work-over riser includes a flow loop in fluid communication with a production flow loop hub and a production bore to facilitate testing and calibration of a subsea multi-phase flow meter during completion operations. The flow loop can be in fluid communication with one or more flow loop isolation valves, one or more production bore isolation valves, one or more annulus bore isolation valves, or one or more cross-over valves. In addition, a pressure/temperature sensor can also be included in the adapter. The adapters disclosed herein permit production fluid to flow through the subsea multi-phase flow meter while the riser is still attached to the subsea Christmas tree and before production operations have begun.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Inventor: Stanley Hosie
  • Publication number: 20140246201
    Abstract: The present invention relates to an apparatus for inspecting and monitoring flexible collection and production lines in real time, rendering possible constant tracking of the condition of the internal structures of a flexible riser, specifically of the tensile armour thereof. The device may be provided at any point along the riser ensuring the establishment of an area of physical and visual contact directly over the surface of the tensile armour of the riser for the installation of equipment for analysis, which area permits further accesses without destroying the sealing of the chamber there formed.
    Type: Application
    Filed: May 7, 2014
    Publication date: September 4, 2014
    Inventors: George Carneiro CAMPELLO, Sergio Ricardo Kokay MORIKAWA
  • Patent number: 8825408
    Abstract: Methods and systems to characterize a fluid in a reservoir to determine if the fluid is in one of equilibrium or non-equilibrium in terms of one of gravity, solvency power, entropy effect or some combination thereof. The method includes acquiring tool data at each depth for each fluid sample of at least two fluid samples wherein each fluid sample is at a different depth and communicating the tool data to a processor. Determining formation properties of each fluid sample to obtain formation property data and determining fluid properties for each fluid sample to obtain fluid property data. Selecting a mathematical model based on one of gravity, solvency power or entropy, in view of a fluid property, using one of tool data, formation property data, fluid property data, known fluid reservoir data or some combination thereof, to predict if the fluid is in an equilibrium distribution or a non-equilibrium distribution.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: September 2, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Denise E Freed, Kentaro Indo, Oliver C Mullins, John Ratulowski, Julian Zuo
  • Patent number: 8800665
    Abstract: A structural health monitoring system for a marine composite riser string is provided. Each riser pipe section includes a cylindrical form having an axis and also a carbon epoxy matrix. A sensor is associated with (e.g., embedded in) and substantially circumscribes the riser pipe section. The sensor includes a PolyVinyliDene Fluoride laminate and electrodes (e.g., conductive silver ink coating) so that the sensor generates electricity at the electrodes responsive to mechanical stresses and strains of the riser section, including vibrations. The system can also include a data acquisition system and digital signal analyzer to analyze signals responsive to the generated electricity at the electrodes of sensors and to provide health monitoring and damage detection for the marine riser pipe string, including impact damage and fatigue crack initiation.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: August 12, 2014
    Assignee: Vetco Gray Inc.
    Inventor: Ashutosh Chandrashekhar Phadke
  • Patent number: 8800662
    Abstract: A subsea test tree control system provides operational control and power to subsea test tree equipment located within a subsea riser without an in riser umbilical to supply additional power to the subsea test tree control system. The subsea test tree control system includes a subsea horizontal subsea tree landed on a subsea wellhead, and a subsea control module communicatively coupled to the horizontal subsea tree. A subsea test tree stack is landed through the riser in the horizontal subsea tree. A subsea control module communication line extends through the horizontal subsea tree to terminate at a bore of the horizontal subsea tree proximate to the tubing hanger, and a riser string communication line communicatively couples to the subsea control module communication line to provide operational power and control the subsea test tree stack. Intervention workover control system umbilicals may bypass the subsea control module and directly connect to the subsea control module communication line.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: August 12, 2014
    Assignee: Vetco Gray Inc.
    Inventor: Darren Lee Miller
  • Publication number: 20140209315
    Abstract: A hydraulic accumulator assembly in which a hydraulic accumulator is associated with at least one responsive unit, which is responsive to the weight of the accumulator to provide an indication dependent on the weight of the accumulator. The accumulator is in an underwater fluid extraction well facility.
    Type: Application
    Filed: January 30, 2014
    Publication date: July 31, 2014
    Applicant: Vetco Gray Controls Limited
    Inventor: Mark Edwin ORGAN
  • Publication number: 20140209314
    Abstract: A system and methodology facilitates utilization of a valve and a cutter both of which may be used in a subsea test tree. The valve comprises a ball element pivotably mounted in a housing and having an exterior surface and a passageway sized to receive a conveyance therethrough. The cutter also is located in the housing but at a position spaced from the ball element. The cutter is oriented for selective severing of the conveyance. Additionally, a seal system is positioned to act against a surface of the ball element.
    Type: Application
    Filed: January 28, 2013
    Publication date: July 31, 2014
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Oguzhan Guven
  • Publication number: 20140174752
    Abstract: A system for monitoring a subsea structure is presented. The system includes a sensor disposed on or about one or more tubular components of the subsea structure, where the one or more tubular components of the subsea structure include a riser, a flow-line, and a subsea umbilical. Moreover, the system includes a controller operatively coupled to the one or more tubular components of the subsea structure and configured to detect an anomaly in the one or more tubular components of the subsea structure. A method for monitoring the subsea structure is also presented.
    Type: Application
    Filed: December 26, 2012
    Publication date: June 26, 2014
    Applicant: General Electric Company
    Inventors: Pekka Tapani Sipilä, Nicholas Josep Ellson, Marko Klaus Baller, Parag Vyas
  • Publication number: 20140158363
    Abstract: A method of servicing a wellbore within a subterranean formation comprising providing a drill string disposed within the wellbore having one or more tubulars associated therewith and forming one or more annuli around the drill string; placing an insulating packer fluid comprising an aqueous base fluid and a viscosifying agent into at least one of the one or more annuli surrounding the drill string; and performing a drill stem test while the insulating packer fluid is in place. A method of servicing a wellbore within a subterranean formation comprising placing an insulating packer fluid in an annular space between a tubular and a marine riser extending from a surface vessel or platform and a subsea wellhead, wherein the insulating packer fluid comprising an aqueous base fluid and a viscosifying agent and has a thermal conductivity of from about 0.008 BTU/(hr·ft·F) to about 0.245 BTU/(hr·ft·F).
    Type: Application
    Filed: December 10, 2012
    Publication date: June 12, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Larry R. DEEN
  • Patent number: 8727011
    Abstract: A method of pressure testing a lower marine riser package includes forming an inflatable packer having exposed slats and an inflatable packer element. The packer is positioned within the lower marine riser package above the cap seal with the exposed slats above the packer element. The packer is inflated and fluid pressure is then applied to test the integrity of the cap seal. The packer may be inverted, then positioned below the BOP/riser connection, the packer inflated, and pressure increased above the inflated packer element to test the fluid integrity of the BOP/riser connection.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: May 20, 2014
    Assignee: TAM International, Inc.
    Inventor: Christopher J. Parrish
  • Patent number: 8720573
    Abstract: A permanent subsea sampling and analysis system is integrated into a replaceable equipment module for a choke valve of a subsea production well. The analysis system is self-contained, and separates a sample into liquid fractions consisting of crude oil, condensate and produced water and then measures the salinity of the water as well as the volumetric ratio between the liquid fractions all in the same sampling container.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: May 13, 2014
    Assignee: Tool-Tech AS
    Inventor: Egil Eriksen
  • Patent number: 8720586
    Abstract: A casing hanger seal assembly is lowered into a pocket between a casing hanger and a wellhead housing while in a run-in position. The seal assembly has a metal-to-metal upper seal ring and an elastomeric and metal lower seal ring carried by and below the upper seal ring. The upper and lower seal rings are movable from a run-in position to a set position sealing between the sidewalls of the casing hanger and the wellhead housing by applying a downward force. The downward force required to move the lower seal ring to the set position is less than the downward force required to move the upper seal ring to the set position. A downward force applied to the upper seal ring after the lower seal ring has landed in the pocket transfers to the lower seal ring to cause the lower seal ring to move to the set position before the upper seal ring moves to the set position.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: May 13, 2014
    Assignee: Vetco Gray Inc.
    Inventor: Khanh Anh Duong
  • Publication number: 20140124210
    Abstract: A system, method and device may be used to monitor fluid levels in a drill pipe in borehole. The system includes an electromagnetic (EM) generator to generate a traveling wave of electromagnetic energy to propagate along a linear path through the drill pipe towards a surface of the fluid, a detector to detect a portion of the electromagnetic wave reflected from the surface of the fluid and propagated through the drill pipe towards the detector, a processor to analyze detected signals to determine a level of the surface of the fluid. In an embodiment, the system includes a pump controller to control the operation of a pump located in the wellbore or at the mudline based on the fluid surface level.
    Type: Application
    Filed: November 7, 2012
    Publication date: May 8, 2014
    Applicant: Chevron U.S.A. Inc.
    Inventor: James David Dowell
  • Publication number: 20140116715
    Abstract: A system for monitoring a subsea well is presented. The system includes the subsea well, where the subsea well includes a production tube, an annulus A co-axial to the production tube and positioned exterior to the production tube, an annulus B co-axial to the annulus A and positioned exterior to the annulus A, and a casing wall disposed between the annulus A and annulus B. Furthermore, the system includes a first sensor disposed on or about the production tube, the annulus A, the casing wall, or combinations thereof and configured to measure a first parameter. The system also includes a controller coupled to the subsea well and configured to analyze the first parameter measured by the first sensor and detect an anomaly in one or more components of the subsea well. Methods and non-transitory computer readable medium configured to perform the method for monitoring a subsea well are also presented.
    Type: Application
    Filed: October 31, 2012
    Publication date: May 1, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Pekka Tapani Sipilä, Nicholas Josep Ellson, David John Buttle, John Charles McCarthy, Sakethraman Mahalingam
  • Patent number: 8708052
    Abstract: Systems, computer readable medium, program code, and methods for monitoring and managing a plurality of marine riser assets are provided. An example of a system includes a computer and a computer readable medium containing a program code of instructions that when executed by the computer, cause the computer to perform operations for tracking the subsea deployment and retrieval of each of a plurality of riser joints. The operations can include receiving riser joint identification data from a riser joint identification indicator connected to the respective riser joint during the operational deployment thereof, and identifying the respective riser joint being operationally deployed to thereby track the deployment thereof. The operations can also include receiving riser joint identification data from the riser identification indicator of the respective riser joint during retrieval thereof, and identifying the respective one or more riser joints being retrieved to thereby track the retrieval thereof.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: April 29, 2014
    Assignee: Vetco Gray Inc.
    Inventor: Amin Radi
  • Patent number: 8701762
    Abstract: Method is directed to determining a fluid influx profile and near-wellbore area parameters in multi-layered reservoirs. A bottomhole pressure in a wellbore is measured. After operation of the wellbore at a constant production rate, the production rate is changed. A bottomhole pressure is measured together with a fluid influx temperature for each productive layer. Graphs of the fluid influx temperature measured as a function of time and of a derivative of this temperature with respect to a logarithm of a time passed after the production rate is changed as a function of time are plotted. Relative production rates and skin factors of the productive layers are calculated based on these graphs.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: April 22, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Valery Vasilievich Shako, Vyacheslav Pavlovich Pimenov, Fikri John Kuchuk
  • Publication number: 20140082304
    Abstract: There is disclosed a method of monitoring a subsea installation comprising: providing data storage means in a subsea control module and storing data resulting from the monitoring of equipment of the installation in the storage means.
    Type: Application
    Filed: November 24, 2011
    Publication date: March 20, 2014
    Inventor: Andrew Malcolm George Clarke
  • Publication number: 20140069656
    Abstract: Methods and systems for detecting subsea cement returns, leaks in subsea cement, leaks in blowout preventer operating systems or other equipment or conduits, or the presence of sweep or spacer media subsea or at the surface, include mixing an indicator, such as sodium fluorescein, with a quantity of cement or other medium, the indicator being insulated from contact with the subsea environment. The medium and indicator can be provided into a subsea wellbore, and upon contact of a portion of the medium with the subsea environment, the indicator can become detectable. Exposing the subsea environment proximate to the wellbore to a detector, such as an ultraviolet light source, enables detection of the indicator, and thereby, detection of the medium, which can indicate a cement return or leak of operating fluids in a subsea blowout preventer system.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: Arp Inc.
    Inventor: David Arp
  • Publication number: 20140060848
    Abstract: A plug assembly and method for pressure testing a shaft having a generally cylindrical member with a deformable outer surface comprised of alternating soft and rigid ribs and a central void for reception of a sealing component having a sealable central bore, a tubular adapter capable of releasable attachment to a drill pipe and releasably engaged to the cylindrical member, a plurality of ports about the circumference of the member for upward flow of fluid through the member and a receptacle in the member for placement of the sealing component for fixed attachment inside the member for creating a seal for testing pressure. The sealing component may use a ball valve to regulate flow and the cylindrical member may have rigid sections implanted between soft sections during manufacture to facilitate sealing upon pressurization.
    Type: Application
    Filed: August 29, 2012
    Publication date: March 6, 2014
    Inventor: Barry J. McMiles