Patents Examined by Daniel L Murphy
  • Patent number: 10274629
    Abstract: A method is provided for transmitting signals on a multi-conductor cable (12) formed from a plurality of conductors (1-7) surrounded by an armor (10), the plurality of conductors having a central conductor (7) surrounded by a first peripheral layer of conductors (1-6) with an even number of conductors symmetrically arranged around the central conductor. The two following transmission modes are carried out simultaneously: a common mode (TX1) that uses the central conductor (7) with a return on the armor (10), for transmitting a first signal (s1); and a differential mode (TX2) between a first path comprising all odd rank conductors (1,3,5) of the peripheral layer and a second path comprising all even rank conductors (2,4,6) of the peripheral layer, for transmitting a second signal (s2).
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: April 30, 2019
    Assignee: SERCEL
    Inventors: Emmanuel Senechal, Fatima Ghanem Elkorso
  • Patent number: 10274640
    Abstract: Systems and methods for attenuating vibrations in marine seismic equipment involve a vessel towing a seismic streamer having a plurality of seismic receivers. The seismic streamer is connected to the vessel by a front-end and a damper is coupled to the front-end. A vibration on the front-end is detected and a damper response to the detected vibration on the front-end is then determined. The damper is actively adjusted based on the damper response. The active adjustment dampens vibrations in an axial direction along a lead-in of the front-end and/or vibrations in a direction transverse to an axial direction of the lead-in.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: April 30, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Jason Daniel David Andersen Granholt
  • Patent number: 10274628
    Abstract: A distributed acoustic sensing cable including an optical fiber waveguide configured to provide light signal transmission and an acoustic device coupled to the optical fiber waveguide and configured to provide acoustic signal transmission. The acoustic device includes a polymer composite having reinforced fibers embedded therein. The polymer composite having acoustic waveguides for attenuating undesirable acoustic waves propagating along the distributed acoustic sensing cable and optical fibers embedded within the polymer composite that extend along an axial length of the acoustic device that facilitate the light signal transmission.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: April 30, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Hua Xia, Avinash Vinayak Taware, David Andrew Barfoot
  • Patent number: 10274627
    Abstract: A seismic sensor system includes a seismic sensor suspended in an acoustic medium, which is disposed between first and second sensor housings. The acoustic medium can be selected to preferentially transmit pressure wave energy, based on the acoustic impedance of the surrounding water column or other seismic medium. The acoustic medium can also be selected to preferentially dissipate or otherwise reduce the transmitted shear wave energy. The second housing can similarly be configured to dissipate shear wave energy, while transmitting pressure wave energy in the form of acoustic waves that propagate through the acoustic medium to the seismic sensor.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: April 30, 2019
    Assignee: ION Geophysical Corporation
    Inventors: Peter Graham Stewart, Cornelis A. M. Faber
  • Patent number: 10267936
    Abstract: Estimating an earth response can include deconvolving a multi-dimensional source wavefield from near-continuously recorded seismic data recorded at a receiver position. The deconvolving can include spreading the near-continuously recorded seismic data across a plurality of possible source emission angles. The result of the deconvolution can be the earth response estimate.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: April 23, 2019
    Assignee: PGS Geophysical AS
    Inventors: Tilman Kluver, Stian Hegna
  • Patent number: 10267140
    Abstract: Fracture imaging modules having one or more 3-component sensors, are incorporated into a tool comprising two or more of the modules for detecting microseismic events in a formation from the same wellbore as is being stimulated. The modules are locked together in a compact mode to permit injection into the wellbore through a conventional lubricator which has a fixed length. Once injected into the wellbore, the modules are spaced from one another in an extended mode to form an axially spaced sensor array which increases the measurement window in the wellbore compared to sensor arrays conventionally injected through a fixed length lubricator. Following the operation, the modules are actuated to return to the compact mode for pulling out of the hole through the lubricator.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: April 23, 2019
    Assignee: KOBOLD CORPORATION
    Inventors: Mark Andreychuk, Per Angman, Allan Petrella
  • Patent number: 10267913
    Abstract: The effective aperture of an ultrasound imaging probe can be increased by including more than one transducer array and using the transducer elements of all of the arrays to render an image can greatly improve the lateral resolution of the generated image. In order to render an image, the relative positions of all of the elements must be known precisely. Systems and methods for accurately calibrating and adjusting a multi-aperture ultrasound system are disclosed. The relative positions of the transducer elements can be computed and aligned prior to and during probe assembly.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: April 23, 2019
    Assignee: MAUI IMAGING, INC.
    Inventors: David M. Smith, Sharon L. Adam, Dennis R. Dietz
  • Patent number: 10261202
    Abstract: A computing system and method for mitigating, in a first seismic survey, cross-talk generated by a second seismic survey. The method includes performing the first seismic survey with a first survey seismic source driven by a first survey pilot sweep, performing the second seismic survey with a second survey seismic source, simultaneously with the first seismic survey, recording with first survey seismic sensors (i) first survey seismic signals that originate from the first survey seismic source and (ii) second survey seismic signals that originate from the second survey seismic source, selecting another first survey pilot sweep, which has less cross-correlation noise with the second survey seismic signals than the first survey pilot sweep, and continuing the first seismic survey with the another first survey pilot sweep.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: April 16, 2019
    Assignee: CGG SERVICES SAS
    Inventor: John Sallas
  • Patent number: 10247841
    Abstract: A technique for use in geophysical surveying acquires seismic data at low seismic frequencies to generate better starting models for subsurface attributes rather than enhancing the bandwidth of airguns for broadband imaging as in conventional practice.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: April 2, 2019
    Assignee: BP Corporation North America Inc.
    Inventors: Andrew James Brenders, Joseph Anthony Dellinger, John Theodore Etgen, Graham Openshaw, Allan Ross
  • Patent number: 10241222
    Abstract: Disclosed are systems and methods for numerically simulating seismic-wave propagation in tilted transversely isotropic (TTI) media, using an adaptive Lebedev staggered grid. In various embodiments, the adaptive grid includes multiple horizontal zones having different associated grid spacings, which may be determined based on a vertical wave-velocity model. The numerical simulation may involve iteratively solving a set of finite-difference equations including finite-difference coefficients that vary spatially depending on the grid spacing. Additional embodiments and features are described.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: March 26, 2019
    Assignee: Landmark Graphics Corporation
    Inventors: Fan Jiang, Shengwen Jin
  • Patent number: 10241221
    Abstract: Apparatuses, systems, and methods for use of directionalized antennas at a seismic module in a seismic survey array. The directionalized antenna may be selectively controlled such that the control of the transmission functionality and reception functionality are independently controlled to transmit data in and receive data from different directions. In turn, bandwidth utilization may be improved in the survey. Additionally, the directionalized antennas may allow for simultaneous transmission and reception of data in a serial data transfer line.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: March 26, 2019
    Assignee: Wireless Seismic, Inc.
    Inventors: Keith Elder, Andrew T. Prokop, Steven Kooper
  • Patent number: 10234580
    Abstract: Seismic data recorded by subsurface seismic sensors placed in a borehole, such as an oil or gas well, are transformed via a process of upward wavefield propagation to pseudo-receivers at the surface of the earth. The seismic data thus transformed can be processed as though the data had been recorded by the pseudo-receivers at the surface rather than in the borehole where the data were actually recorded. This method accurately accounts for seismic source statics, anisotropy, and all velocity effects between the real receivers in the borehole and the pseudo-receivers at the surface of the earth.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: March 19, 2019
    Inventors: Brian Nelson Fuller, John Marcus Sterling
  • Patent number: 10234586
    Abstract: Buoyant tail section of a geophysical streamer. At least some of the example embodiments are methods of performing a geophysical survey in a marine environment, the method including: towing an active section of a geophysical streamer in the marine environment, the active section having a buoyancy; towing a tail section, the tail section coupled to a distal end of the active section, the towing of the tail section by way of the active section, and at least a portion of the tail section having a buoyancy that is both positively buoyant and greater than buoyancy of the active section; towing a tail buoy in the marine environment, the tail buoy coupled to a distal end of the tail section, and the towing of the tail buoy by way of the tail section; and gathering geophysical survey data by way of the active section.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: March 19, 2019
    Assignee: PGS Geophysical AS
    Inventor: Mattias Dan Christian Oscarsson
  • Patent number: 10233748
    Abstract: Acoustic anisotropy of downhole formations is determined using statistical analysis. During operation of a downhole system, acoustic slowness measurements are acquired around a borehole extending along a formation. Statistical analysis is performed on the acquired slowness measurements, whereby the maximum and minimum slownesses of the formation are determined.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: March 19, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Taher A. Kortam, Philip W. Tracadas
  • Patent number: 10234579
    Abstract: A method of performing a seismic survey including: deploying nodal seismic sensors at positions in a survey region; activating a plurality of seismic sources; and using the nodal seismic sensors to record seismic signals generated in response to the activation of the plurality of signals.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: March 19, 2019
    Assignee: MAGSEIS FF LLC
    Inventors: Etienne Marc, Clifford H. Ray, James Nelson Thompson
  • Patent number: 10227830
    Abstract: A system for determining a location and a diameter of a pipe deployed in a bore includes a plurality of circumferentially spaced acoustic transmitters and a plurality of circumferentially spaced acoustic receivers deployed in a wall of the bore. A processor is configured to identify and process received acoustic waveforms that are reflected by the pipe to compute the location and the diameter of the pipe. The system may include a drill string deployed in a drilling riser.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: March 12, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Jacques Orban, Brian Oliver Clark
  • Patent number: 10228479
    Abstract: Embodiments of dynamic gain adjustments in seismic surveys are described. One method of acquiring a seismic survey includes determining an arrival time at a seismic receiver of a downgoing seismic wavefield associated with a seismic source based at least in part on an estimated position of the seismic source, an estimated position of the seismic receiver, or combinations thereof. The method also includes adjusting a gain of the seismic receiver based at least in part on the determined arrival time of the downgoing seismic wavefield in order to, for example, help prevent overdriving or clipping of the seismic receiver when the downgoing seismic wavefield arrives at or passes by the seismic receiver.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: March 12, 2019
    Assignee: ION Geophysical Corporation
    Inventors: Nikolaos Bernitsas, Carlos Calderon, David Ridyard, David Brookes
  • Patent number: 10228480
    Abstract: A seismic data acquisition system comprising a composite marine seismic cable and a winch, the composite marine seismic cable comprising a sensor cable and a lead-in cable for providing electrical connections to the sensor cable, and the winch comprising a first cable compartment for the lead-in cable and a second cable compartment for the sensor cable, wherein the lead-in cable and the sensor cable may be deployed or recovered independently of each other. There is also a method of deploying a composite seismic cable comprising a lead-in cable and a sensor cable.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: March 12, 2019
    Assignee: POLARCUS DMCC
    Inventor: Erik Godoy
  • Patent number: 10215015
    Abstract: A distributed acoustic sensing cable package having a polymer composite extruded over an optical waveguide to encase the waveguide and to form a crystalline matrix layer acoustically coupled to the waveguide. The crystalline matrix includes reinforcement fibers to further enhance transmission of a cable strain to the optical waveguide. During manufacture of the cable, the polymer composite may be extruded over the optical waveguide and subsequently subjected to heat treatment to increase the crystallinity of the polymer composite and increase the elastic modulus. Both axial and radial strain fields are effectively interact with cased fiber waveguide for producing measurable phase shift signal for distributed acoustic noise detection.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: February 26, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Hua Xia, Avinash V. Taware, David A. Barfoot
  • Patent number: 10215871
    Abstract: Suppressing data corresponding to noise using a model of noise propagation along a sensor streamer. At least some of the example embodiments are methods including: reading a data set containing noise and seismic signals recorded by geophones disposed in a sensor streamer when the sensor streamer was within a body of water; determining locations of noise sources along the sensor streamer when the sensor streamer was within the body of water; and suppressing data of the data set corresponding to noise sources along the sensor streamer.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: February 26, 2019
    Assignee: PGS Geophysical AS
    Inventor: Lars Erik Magnus Björnemo