Plural Detectors Patents (Class 181/112)
  • Patent number: 10451755
    Abstract: Processing data representing a wavefield propagating through a medium by defining, based on one or more properties of a region of the medium and of the wavefield therein, a desired timestep and a desired spatial step for a discrete operator. Discrete seed operators having an initial timestep and an initial spatial step less than the desired timestep and the desired spatial step are then defined, and these seed operators are compounded to obtain an operator having a greater timestep and upscaled to obtain an operator having a greater spatial step. The compounding and upscaling are repeated until an operator having the desired timestep and the desired spatial step is obtained. The operator having the desired timestep and the desired spatial step may be applied to the data representing the wavefield propagating through a medium to propagate the data backwards in time to recreate the wavefield at earlier times.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: October 22, 2019
    Assignee: WESTERNGECO L.L.C.
    Inventor: Colin Thomson
  • Patent number: 10444386
    Abstract: Methods and systems that compute an approximate vertical-velocity wavefield based on a measured pressure wavefield and knowledge of the free-surface shape when the pressure wavefield was measured are described. The measured pressure wavefield is used to compute an approximate frozen free-surface profile of the free surface. The approximate frozen free-surface profile and the measured pressure wavefield are then used to compute an approximate vertical-velocity wavefield that does not include low-frequency streamer vibrational noise. The approximate vertical-velocity wavefield and measured pressure wavefield may be used to separate the pressure wavefield into up-going and down-going pressure wavefields.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: October 15, 2019
    Assignee: PGS Geophysical AS
    Inventors: Okwudili Chuks Orji, Endrias Getachew Asgedom, Walter Söllner
  • Patent number: 10436923
    Abstract: Apparatus, computer instructions and method for combining first and second records to form a substantially deghosted seismic record.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: October 8, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Bjorn Eino Rommel
  • Patent number: 10429184
    Abstract: An underwater sensor assembly includes a frame configured to sit on a bottom of a body of water and at least one first sensor connected to the frame. The at least one first sensor is configured to measure at least one parameter related to the body of water. A system for environmental monitoring includes the underwater sensor assembly, at least one buoy at a surface of the body of water, and at least one cable attached at a first end to the frame and attached at a second end opposite the first end to the at least one buoy. The at least one buoy comprises at least one second sensor configured to measure at least one parameter above the surface of the body of water.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: October 1, 2019
    Assignee: Aridea LLC
    Inventors: Robert E. Moore, Jason J. Martin
  • Patent number: 10338240
    Abstract: A method for improving a 4-dimensional (4D) repeatability by modifying a given path to be followed by a source during a seismic survey. The method includes receiving the given path at a control device associated with a vehicle that caries the source; following the given path during a first seismic survey that is a baseline survey for the 4D seismic survey; deviating from the given path to follow a new path when encountering an obstacle on the given path; and updating the given path, based on the new path, to obtain an updated given path when a deviation condition is met.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: July 2, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Cecile Berron, Eric Forgues, Thomas Bianchi, Thierry Klein
  • Patent number: 10338254
    Abstract: Systems and methods are provided for directional de-noising on seismic data recorded byseismic receivers. A method includes: receiving a seismic dataset, wherein the seismic dataset includes a model dataset and an input dataset to filter; decomposing the model dataset into a plurality of model directions, identifying which of the model directions to keep; and mapping the input dataset along the identified model directions resulting in a filtered output.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: July 2, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Bernard Deschizeaux, Charlotte Sanchis
  • Patent number: 10317551
    Abstract: The present disclosure provides a technique for marine seismic imaging that processes data acquired from two or more different seismic surveys in a combined manner to advantageous effect. The different seismic surveys may use seabed sensors at same positions on the seabed, but they may have different shot locations and may be performed at different times. In one use case, the technique may be used to image a subsurface location that is difficult to image using either survey alone. In another use case, the technique may be used to image a subsurface location under an obstruction. The technique may also be utilized to efficiently monitor a reservoir over time.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: June 11, 2019
    Assignee: PGS Geophysical AS
    Inventor: Didier B. P. Lecerf
  • Patent number: 10254091
    Abstract: The present invention relates to a cluster bomblet having an improved bomblet body, the cluster bomblet comprising: a cylindrical bomblet body (10) packed with high explosives; a fuse assembly (20) having a striker screw (21) for exploding the high explosives and coupled to the top side of the bomblet body; and a conical penetrator (15) provided inside the rear end portion of the bomblet body.
    Type: Grant
    Filed: June 4, 2016
    Date of Patent: April 9, 2019
    Assignee: POONGSAN CORPORATION
    Inventors: Nam Jin Kim, Mun Soo Park, Dong Won Kim
  • Patent number: 10197660
    Abstract: The present inventive concept includes a duct system and method for using same to map and locate ducts. A preferred embodiment of the duct system includes a duct, a plurality of electronic information modules and an oversheath at least partially covering the plurality of information modules and fixing the information modules to the duct. The plurality of information modules are configured to emit a positional signal to enable location of the information modules and associated duct(s) and/or mapping of the duct system.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: February 5, 2019
    Assignee: DURA-LINE CORPORATION
    Inventors: Timothy A. Grimsley, Thomas McCall
  • Patent number: 10007013
    Abstract: An electronic unit is constructed having a casing, at least partially flexible, at least partially made of a polymer material. The casing extends along a longitudinal axis (X) between two lateral ends and has a hollow cylindrical core for housing a portion of a core cable of a streamer, and a plurality of walls outwardly extending from the hollow cylindrical core, delimiting spaces configured for housing electronics, and having free ends. One of the walls and the hollow cylindrical core of the casing have a through-slot that extends longitudinally over a total length of the casing from one lateral end to another lateral end. An electronic board has at least one flexible part and configured for at least partially resting on free ends of at least two of the plurality of walls.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: June 26, 2018
    Assignee: SERCEL
    Inventors: Daniel Pennec, Frederic Nicolas
  • Patent number: 9995837
    Abstract: Various embodiments include apparatus and methods to extract reflections from acoustic array data collected from a receiver array. A beam-former can be generated to detect a reflection wave in the presence of a direct wave identified from collected waveforms, where the beam-former can be correlated to receiver and depth for the array. The direct wave and the reflection wave can be separated to extract the reflection wave, where the separation is correlated to receiver and depth for the array. The extracted reflected wave can be used to image and/or analyze entities associated with the borehole. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: June 12, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Mark V. Collins
  • Patent number: 9766359
    Abstract: Methods for efficiently acquiring full-azimuth towed streamer survey data are described. The methods use multiple vessels to perform coil shooting.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: September 19, 2017
    Assignee: WESTERNGECO L.L.C.
    Inventors: Nicolae Moldoveanu, Steven Fealy
  • Patent number: 9703000
    Abstract: Methods for efficiently acquiring full-azimuth towed streamer survey data are described. The methods use multiple vessels to perform coil shooting.
    Type: Grant
    Filed: May 16, 2015
    Date of Patent: July 11, 2017
    Assignee: WESTERNGECO L.L.C.
    Inventors: Nicolae Moldoveanu, Steven Fealy
  • Patent number: 9541660
    Abstract: A system and method are provided for filtering scatterer noise energy from land seismic waves using three dimensional (3D) iterative filtering in a cross-spread source-receiver pattern. The system and method isolate scatterer noise energy associated with a scatterer based on a filtering process performed using a scatterer referential time delay. Then, the isolated scatterer noise energy can be subtracted from the surface wave data. This process can be repeated for each scatterer in the covered area to remove each of their contributions, and can be performed, for example, after a preliminary filtering of the surface wave data using 3D fk filtering or the like.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: January 10, 2017
    Assignee: CGG SERVICES SA
    Inventors: Benoit De Cacqueray, Philippe Roux
  • Patent number: 9519071
    Abstract: Apparatus, computer instructions and method for controlling an energy output of a source array to be used in a seismic survey for illuminating a subsurface. The method includes generating a model (?) based on up-going (U) and down-going (D) components of seismic waves generated by source elements that form the source array; calculating the amplitudes and phases of each source element based on the model (?); and driving the source array based on the calculated amplitudes and phases for the source elements so that a ghost generated by the source array is reduced at emission.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: December 13, 2016
    Assignee: CGG SERVICES SA
    Inventors: Cecile Berron, Julien Meunier
  • Patent number: 9448313
    Abstract: Microseismic mapping using buried arrays with the integration of passive and active seismic surveys provides enhanced microseismic mapping results. The system is initially set up by recording seismic data with the buried array installation while shooting a significant portion of the 3D surface seismic survey. The 3D surface seismic survey provides the following data: shallow 3D VSP data from the buried arrays; P-wave and converted wave data for the area covered by the buried array that benefits from the planned data integration processing effort; and microseismic data and associated analysis.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: September 20, 2016
    Assignee: ION Geophysical Corporation
    Inventors: Gregg S. Hofland, Jacques P. Leveille, Daniel S. Kahn, Kees Faber, Rick Laroo, Jerry L. Lawson, William A. Balla, Michael J. Saur
  • Patent number: 9410421
    Abstract: This invention provides a method for characterizing natural fracture networks or other textural networks in an Earth formation when using microseismic monitoring of a hydraulic fracturing job. The method comprises receiving (120) microseismic data from a hydraulic fracturing event, identifying a data subset (153) comprising components of the microseismic data associated with the one or more hydraulic fractures; and obtaining a remainder dataset (156) of the microseismic data by removing the subset from the microseismic data. One approach for identifying the data subset, after removing high uncertainty microseismic events, is to create a Voronoi diagram of a plurality of cells each associated with one of the microseismic events, determine a density for each cell, create a connectivity matrix of the high density cells and identify event clusters in the connectivity matrix which are aligned with a main growing direction of the hydraulic fracture.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: August 9, 2016
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Ian Bradford, Bassem Khadhraoui, Pierre Tardif D'Hamonville
  • Patent number: 9381986
    Abstract: An autonomous underwater vehicle (AUV) is configured to record seismic signals during a marine seismic survey. The AUV includes a body having a base (B) and first and second sides (A, C), the body having a head part and a tail part; a propulsion system for guiding the AUV to a final target on the ocean bottom; jet pumps connected to corresponding nozzles on the first and second sides (A, C); a control device connected to the jet pumps; and a seismic sensor configured to record seismic signals. The jet pumps are actuated by the control device in a given sequence so that the base (B) penetrates into the ocean bottom.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: July 5, 2016
    Assignee: SEABED GEOSOLUTIONS B.V.
    Inventor: Thierry Brizard
  • Patent number: 9354337
    Abstract: Embodiments of a system are provided for forming enhanced seismic array traces using virtual seismic sensors in addition to the real seismic sensors to form a virtual seismic array. The system receives the signal responses from the real sensors, processes the signal responses from the sensors to define virtual signals using a narrowband decomposition of the complex envelope of the sensor signal responses, calculates second- and fourth-order statistics to derive steering vectors for the array of real sensors, and forms a virtual seismic array in response thereto. Machines, computer program product, and computer-implemented methods are provided for forming enhanced seismic array traces by receiving the array responses from sensors, processing the signals to define virtual sensor signals and a virtual seismic array, and forming an array response for the virtual seismic array to form a seismic trace of enhanced resolution.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: May 31, 2016
    Assignees: Saudi Arabian Oil Company, The Texas A&M University System
    Inventors: Ibrahim Abdulaziz Alhukail, Luc Ikelle
  • Patent number: 9285493
    Abstract: A method for marine seismic surveying includes towing a streamer in a body of water. The streamer includes a plurality of spaced apart sensor groups, each including a plurality of longitudinally spaced apart pressure sensors and particle motion responsive sensors. Signals are detected at each of the sensors in response to actuation of a seismic energy source. Components of the sampled motion signals in each group above a selected frequency are combined to generate respective group motion signals. Components of the motion responsive signals below the selected frequency are velocity filtered. The velocity filtered signals are combined with the group motion signals to generate full bandwidth motion responsive signals corresponding to each sensor group.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: March 15, 2016
    Assignee: PGS GEOPHYSICAL AS
    Inventor: Stig Rune Lennart Tenghamn
  • Patent number: 9176245
    Abstract: Systems, methods, and instructions encoded in a computer-readable medium can perform operations related to refining information on characteristics of natural fractures of a subterranean formation. Fracture pattern models are generated based on sampling an initial distribution of values for a fracture parameter. Each fracture pattern model may include, for example, a model of natural fractures in a subterranean formation. Each fracture pattern model is compared to microseismic event data for a subterranean region. A refined distribution for the fracture parameter is generated based on the comparison. Generating the refined distribution may include, for example, selecting values of the fracture parameter from fracture pattern models that correlate with the microseismic event data. In some implementations, an injection treatment may be simulated and/or designed based on the refined distribution.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: November 3, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventor: David P. Craig
  • Patent number: 9081119
    Abstract: The described invention relates to a method for acquiring seismic data in icy waters comprising positioning a fixed structure or movable vessel (102) at or near an established water opening; deploying into the water opening, from said structure or vessel one or more ROV or AUV units (104), said ROV or AUV units remaining connected to said structure or vessel; operating the one or more ROV or AUV units to deploy seismic sensors recording equipment (106) and/or one or more seismic source equipment (108) on or near the water bottom; generating and applying control signals to one or more of the more ROV or AUV units to generate and to record seismic signals (110); operating the one or more ROV or AUV units on the water bottom to move (114) and/or recover (116) the seismic source equipment and/or seismic sensors recording.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: July 14, 2015
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Michael W Norris, Marvin L Johnson
  • Patent number: 9038765
    Abstract: Neutrally-buoyant tools for seismic data collection are provided that may range from several hundred meters to several kilometers in length and have integrated sensors which move along with the borehole fluid in response to a passing seismic wave. The disclosure also provides methods of deploying neutrally-buoyant tools, which includes using a tractor, adding a weight or both to the tool in order to overcome the difficulty of lowering a neutrally buoyant tool into a borehole, and optionally occasionally clamping the tool to the borehole to alleviate tension in the tool. This disclosure also provides methods of acquiring seismic data, which involves positioning a neutrally-buoyant tool in a borehole such that the tool is able to move relatively freely along with the borehole fluid in response to a seismic wave passing through the fluid, firing a seismic source, and using the sensors to collect seismic data generated thereby.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: May 26, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Nicolas Goujon, Julian Edward Kragh, Philip A. F. Christie, Emmanuel Coste, Clement Kostov, Oeyvind Teigen, Toru Ikegami, Marwan Charara
  • Patent number: 8964501
    Abstract: A technique includes obtaining multi-component seismic data acquired by two or more seismic sensors while in tow. The multi-component seismic data is indicative of a pressure wavefield and particle motion. The technique includes based on the data, determining at least one high order (i.e., second order or higher) spatial derivative of the pressure wavefield.
    Type: Grant
    Filed: May 25, 2008
    Date of Patent: February 24, 2015
    Assignee: WesternGeco L.L.C.
    Inventors: Massimiliano Vassallo, Johan Olof Anders Robertsson, Dirk-Jan Van Manen
  • Patent number: 8965706
    Abstract: Adaptive filtering method to remove ground roll from seismic data. In an M channel adaptive filter, weights Wi are set using an adaptive algorithm based on seeking the minimum in the partial differential of cost function J. The cost function includes an expansion of the primary trace d into d=dg+?d (where: dg is ground roll contribution and ?d=dsig+dran, where dsig is the reflected signal component and dran is a random noise component) and a corresponding expansion of the reference x into x=xg+?x (where xg is ground roll contribution and ?x=xsig+xran; where xsig is a reflected signal component and xran is a random noise component). The delta components are included in the denominator of cost function J to provide an optimal solution of the filter coefficients biased by the reflection signal and random noise is removed.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: February 24, 2015
    Assignee: WesternGeco L.L.C.
    Inventor: Ying Ji
  • Patent number: 8867307
    Abstract: A method for seismic surveying includes disposing a plurality of seismic sensors in a selected pattern above an area of the Earth's subsurface to be evaluated. A seismic energy source is repeatedly actuated proximate the seismic sensors. Signals generated by the seismic sensors, indexed in time with respect to each actuation of the seismic energy source are recorded. The recorded signals are processed to generate an image corresponding to at least one point in the subsurface. The processing includes stacking recordings from each sensor for a plurality of actuations of the source and beam steering a response of the seismic sensors such that the at least one point is equivalent to a focal point of a response of the plurality of sensors.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: October 21, 2014
    Assignee: Acoustic Zoom, Inc.
    Inventors: Jacques Y. Guigné, Nicholas G. Pace
  • Publication number: 20140305732
    Abstract: Systems, sensors, and methods for high-speed image monitoring of baseplate movement in a vibrator. The systems can include a baseplate defined by an area, disposable at a ground surface to direct a seismic force into the ground surface. The system can include a reaction mass coupled to and positioned above the baseplate to generate the seismic force at the baseplate. The system can include an actuator assembly coupled to the reaction mass to vibrate the reaction mass, as well as high-speed image units directed at the area of the baseplate. The high-speed image units can include photo detectors to sense a distribution of acceleration across the area of the baseplate, and a light source emit light to be sensed by the photo detectors. The system can also include a controller coupled to the actuator assembly, that drives the actuator assembly.
    Type: Application
    Filed: April 11, 2013
    Publication date: October 16, 2014
    Applicant: Schlumberger Technology Corporation
    Inventors: John Richard Tulett, Theodorus Tjhang, Emmanuel Coste, Halvor Sehested Groenaas, Timothy James Dean
  • Patent number: 8654606
    Abstract: A sensor assembly has first sensors spaced apart along a first direction, and second sensors oriented in a second direction generally orthogonal to the first direction. Differencing of outputs of the first sensors is performed, and differencing of outputs of the second sensors is performed. A signal output is produced by combining the differenced outputs of the first sensors and the differenced outputs of the second sensors, where the signal output represents a seismic response of a subterranean structure.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: February 18, 2014
    Assignee: WesternGeco L.L.C.
    Inventors: Everhard Muyzert, Pascal Edme, Julian Edward Kragh
  • Patent number: 8556540
    Abstract: A deployment and retrieval apparatus for ocean bottom seismic receivers, the apparatus being a remotely operated vehicle (ROV) having a carrier attached thereto and carrying a plurality of receivers. The carrier includes a frame in which is mounted a structure for seating and releasing the receivers. The structure includes one or more movable conveyors disposed to move receivers along a linear path relative to the frame in order to discharge and retrieve ocean bottom seismic receivers.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: October 15, 2013
    Assignee: Fairfield Industries Incorporated
    Inventors: James N. Thompson, Clifford H. Ray, Glenn D. Fisseler, Roger L. Fyffe
  • Patent number: 8408355
    Abstract: A downhole tool for subsurface disposal is provided. The tool comprises an elongated tool body, an enclosure attached to an exterior surface of the tool body. The enclosure comprises at least one transducer disposed at an angle with respect to a longitudinal axis of the enclosure, and an electronics board coupled to and disposed adjacent to the at least one transducer. The enclosure also defines an internal cavity, and the internal cavity contains a fluid for insulating the at least one transducer from a downhole environment. The fluid is in direct contact with the at least one transducer and the electronics board.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: April 2, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Miguel F. Pabon, Fernando Garcia Osuna, David B. Ayers
  • Patent number: 8279708
    Abstract: A measurement method for a granular compaction pile 10 using a crosshole seismic test. The measurement method includes forming first to fifth measurement holes around the granular compaction pile, injecting grouting material into the first to fifth measurement holes and inserting casings into the first to fifth measurement holes, respectively, and installing an oscillator and a detector of a crosshole seismic tester in the first to fifth holes and detecting a velocity of a shearing wave, thereby measuring a diameter of the granular compaction pile according to a construction depth thereof. The shape and the diameter of the granular compaction pile are easily checked without causing damage to the granular compaction pile.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: October 2, 2012
    Assignee: Industry Academic Cooperation Foundation of Kyunghee University
    Inventors: Young Jin Mok, Hak Sung Kim, In Beom Park, Chul Soo Park
  • Patent number: 8256565
    Abstract: An enclosure for housing a transducer and electronics for disposal on a downhole tool. A transducer is disposed at an angle with respect to a longitudinal axis of the enclosure, wherein the enclosure contains a fluid surrounding the transducer. Enclosures also include transducers linked to motor means for selective rotation of the transducers within the enclosure. Enclosures with transducer arrays for phased or targeted signal transmission/detection.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: September 4, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Miguel F. Pabon, Fernando Garcia Osuna, David B. Ayers
  • Patent number: 8075226
    Abstract: A deployment and retrieval apparatus for ocean bottom seismic receivers, the apparatus being a remotely operated vehicle (ROV) having a carrier attached thereto and carrying a plurality of receivers. The carrier includes a frame in which is mounted a structure for seating and releasing the receivers. The structure may include a movable conveyor or fixed parallel rails or a barrel. The structure includes a discharge port on the frame and a discharge mechanism for removing and retrieving the receivers. A method for deployment and retrieval of ocean bottom seismic receivers includes the steps of loading a carrier with a plurality of receivers, attaching the carrier to an ROV, utilizing the ROV to transport the carrier from a surface vessel to a position adjacent the seabed and thereafter utilizing the ROV to remove receivers from the carrier and place the receivers on the seabed.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: December 13, 2011
    Assignee: Fairfield Industries Incorporated
    Inventors: James N. Thompson, Clifford H. Ray, Glenn D. Fisseler, Roger L. Fyffe
  • Publication number: 20110272206
    Abstract: Methods and systems are provided for inducing seismic vibrations into an elastic medium such as subterranean formations. The methods and systems utilize seismic transducers having a sensor matrix for measurement of baseplate force distributions. Certain embodiments include a sensor matrix that is configured to measure a distribution of discrete force measurements across the surface area of the baseplate. Advantages of including such sensor matrices include a more accurate prediction of seismic transducer energy output. That is, these measurements can be used as feedback to adjust the operation of the seismic transducer. Additionally, these force measurements may be used to provide for a better interpretation of gathered seismic data. These advantages ultimately translate to improved seismic surveys, having higher resolution of the formations surveyed and reaching greater depths.
    Type: Application
    Filed: April 15, 2011
    Publication date: November 10, 2011
    Applicant: CONOCOPHILLIPS COMPANY
    Inventors: Peter M. Eick, Frank Janiszewski, Joel D. Brewer, Shan Shan
  • Patent number: 7913806
    Abstract: A measurement package for disposal on an apparatus such as a downhole tool or a tool like device. The measurement package including an enclosure, a first acoustic transducer housed within the enclosure, a second acoustic transducer housed within the enclosure and electronics housed within the enclosure that is in communication with the first and second transducers. Further, an acoustic transmitter and receivers can be disposed at an angle with respect to a longitudinal axis of the enclosure. The enclosure can contain attenuative material surrounding the transmitter and receivers, and electronics for controlling the transmitter and receivers and communicating with the downhole tool.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: March 29, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Miguel F. Pabon, Fernando Garcia Osuna, David B. Ayers
  • Patent number: 7830748
    Abstract: A method for seismic surveying includes disposing a plurality of seismic sensors in a selected pattern above an area of the Earth's subsurface to be evaluated. A seismic energy source is repeatedly actuated proximate the seismic sensors. Signals generated by the seismic sensors, indexed in time with respect to each actuation of the seismic energy source are recorded. The recorded signals are processed to generate an image corresponding to at least one point in the subsurface. The processing includes stacking recordings from each sensor for a plurality of actuations of the source and beam steering a response of the seismic sensors such that the at least one point is equivalent to a focal point of a response of the plurality of sensors.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: November 9, 2010
    Assignee: PanGeo Subsea, Inc.
    Inventors: Jacques Y. Guigné, Nicholas G. Pace
  • Patent number: 7679994
    Abstract: Seismic sensor systems and sensor station topologies, as well as corresponding cable and sensor station components, manufacturing and deployment techniques are provided. For some embodiments, networks of optical ocean bottom seismic (OBS) stations are provided, in which sensor stations are efficiently deployed in a modular fashion as series of array cable modules deployed along a multi-fiber cable.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 16, 2010
    Assignee: Optoplan AS
    Inventors: Erlend Ronnekleiv, Ole Henrik Waagaard, Hilde Nakstad, Arne Berg, Jon Thomas Kringlebotn
  • Patent number: 7663970
    Abstract: A method for seismic event mapping includes transforming seismic signals recorded at selected positions into a domain of possible spatial positions of a source of seismic events. An origin in spatial position and time of at least one seismic event is determined from space and time distribution of at least one attribute of the transformed seismic data.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: February 16, 2010
    Assignee: Microseismic, Inc.
    Inventors: Peter M. Duncan, James D Lakings, Roderick A. Flores
  • Patent number: 7558155
    Abstract: Seismic sensor systems and sensor station topologies, as well as corresponding cable and sensor station components, manufacturing and deployment techniques are provided. For some embodiments, networks of optical ocean bottom seismic (OBS) stations are provided, in which sensor stations are efficiently deployed in a modular fashion as series of array cable modules deployed along a multi-fiber cable.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: July 7, 2009
    Assignee: Optoplan A/S
    Inventors: Erlend Rønnekleiv, Ole Henrik Waagaard, Hilde Nakstad, Ame Berg
  • Patent number: 7512034
    Abstract: A method of acquiring seismic data that includes deploying a first array of seismic receivers and a second array of seismic receivers, and simultaneously receiving drill noise seismic energy produced as a wellbore is drilled relatively near the first and second arrays of seismic receivers using the first and second array of seismic receivers, wherein the first array of seismic receivers is closer to the source of the drill noise seismic energy than the second array of seismic receivers. A related method for processing seismic data and computer useable media are also described. Also a method of acquiring seismic data that includes deploying a first array of seismic receivers within a borehole, receiving seismic energy produced as a wellbore is drilled relatively near first array using said seismic receivers, and recording seismic data associated with the received seismic energy. A related method for acquiring and processing seismic data is also described.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: March 31, 2009
    Assignee: Schlumberger Technology Corporation
    Inventor: Jakob B. U. Haldorsen
  • Publication number: 20090065289
    Abstract: A marine seismic streamer includes a jacket substantially covering an exterior of the streamer. At least one strength member is disposed along the length of the jacket. A sensor mount is coupled to the strength member. At least one particle motion sensor is suspended within the sensor mount at a selected location along the jacket. The at least one particle motion sensor is suspended in the jacket by at least one biasing device. A mass of the particle motion sensor and a force rate of the biasing device are selected such that a resonant frequency of the particle motion sensor within the sensor jacket is within a predetermined range. The sensor mount is configured such that motion of the jacket, the sensor mount and the strength member is substantially isolated from the particle motion sensor.
    Type: Application
    Filed: October 17, 2008
    Publication date: March 12, 2009
    Inventors: Stig Rune Lennart Tenghamn, Andre Stenzel
  • Patent number: 7466626
    Abstract: A seismic surveying arrangement comprises a vertical source array (26) having at least two sources (27,28) of seismic energy. The source array (26) is disposed such that a first source (28) is located within a weathered layer (35) of the earth's interior and such that a second source (27) is located within the weathered layer at a greater depth than the first source or within a high velocity layer (8) underlying the weathered layer (35). The surveying arrangement also includes a first horizontal receiver array (29) located in the weathered layer, and means for processing seismic data acquired by the first receiver array. The processing means are able to process the acquired seismic data so as to attenuate seismic events involving reflection of seismic energy at at least one boundary face of the high velocity layer. The seismic surveying arrangement may also comprise a second receiver array (30) disposed at a lower depth than the first receiver array (29).
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: December 16, 2008
    Assignee: WesternGeco L.L.C.
    Inventor: Peter Van Baaren
  • Patent number: 7450061
    Abstract: A position measurement system for measuring displacement of an observation station viewed from a reference station by receiving radio waves from satellites by these stations, and performing relative position measurement between the stations, having: a short period displacement measurement section for measuring a short period displacement component in each of the stations through independent position measurement; a relative position computing section for performing relative position measurement between said stations; a long period position computing section for inputting a short period displacement component measured by the short period displacement measurement section, a relative position determined by the relative position computing section and an absolute position from the reference station, and determining the absolute position including a long period displacement component by removing the short period displacement component measured by each of the stations; and a radio communication device installed on ea
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: November 11, 2008
    Assignee: Hitachi Zosen Corporation
    Inventors: Yukihiro Terada, Keiji Ito, Takenori Abe, Takashi Fujita
  • Patent number: 7441628
    Abstract: Methods and apparatus for generating a signal with a signal generator comprising a tool body disposed in a tubular member. A first and second electromagnets are disposed within the tool body such that the second electromagnet is opposite the first electromagnet. A power supply selectively provides electrical current to the first and second electromagnets so as to displace the tubular member and generate a signal in the surrounding formation.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: October 28, 2008
    Assignee: Z-Seis Corporation
    Inventor: James Minto
  • Patent number: 7424928
    Abstract: A downhole receiver for gathering seismic and sonic data from inside a borehole includes a substantially tubular housing adapted for axial connection to a tool string, and one or more sensors. A damping element is provided to flexibly couple each sensor to the tubular housing. An actuator extends the one or more sensors substantially radially with respect to the tubular housing to clamp the sensors against the wall of the borehole. In selected embodiments, the sensors may be one or multiple component geophones, accelerometers, hydrophones, vibrometers, or the like.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: September 16, 2008
    Inventors: Dale Cox, David R. Hall, H. Tracy Hall, Jr., Scott Dahlgren, David S. Pixton
  • Patent number: 7426439
    Abstract: The present invention provides a method and apparatus for seismic data acquisition. One embodiment of the method includes accessing data acquired by at least two particle motion sensors. The data includes a seismic signal and a noise signal and the at least two particle motion sensors being separated by a length determined based on a noise coherence length. The method may also include processing the accessed data to remove a portion of the noise signal.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: September 16, 2008
    Assignee: WesternGeco L.L.C.
    Inventors: Ahmet Kemal Ozdemir, Oeyvind Teigen, Lars Borgen, Vidar A. Husom
  • Patent number: 7364007
    Abstract: Acoustic transducers configured with integrated electronics technology are adapted to digitize signal data close to the transducer. The transducers are packaged with a reduced number of elements and sealed for exposure to harsh environments, without oil compensation. A transducer assembly includes a frame, an acoustic transducer element disposed on the frame, and an electronics module disposed on the frame and linked to the acoustic transducer element. The pressure and temperature tolerant electronics module is adapted to process a signal associated with the transducer element.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: April 29, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Fernando Garcia-Osuna, Harold Pfutzner, Alain Dumont, Tetsuya Tanaka
  • Patent number: 7334661
    Abstract: An acoustic logging tool sleeve with a preferably discontinuous, alternating structure that is acoustically opaque in some zones, and acoustically transparent in others. The sleeve may be modular, with several stages connected together. The multiple stages provide a sleeve that may be useful with a variety of borehole logging tools to reduce or eliminate the transmission of noise to the receiving elements.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: February 26, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Jahir Pabon, Chung Chang, David L. Johnson, Vivian Pistre, Tarek Habashy, Smaine Zeroug, Toshihiro Kinoshita, Hitoshi Sugiyama, Hiroshi Hori, Atsushi Saito
  • Patent number: 7325647
    Abstract: Seismic emission system for use in an underground formation, using at least one seismic source movable successively in a plurality of prepared activation locations and method for implementing same. The system comprises for example a plurality of coupling devices (1) including each for example two anchor elements (12, 9?) tightly coupled with the formation (by cementing for example). These anchor elements are secured to the seismic source (V) such as a vibrator of any type or an impulsive source by transmission elements (10, 13). The seismic source is coupled with coupling device (1) by fast locking means (18, 19). Coupling devices (1) can be preinstalled at a plurality of prepared activation locations above the formation to be monitored. Seismic monitoring operations can be carried out by moving at least one seismic source successively between the different locations where coupling devices (1) are installed.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: February 5, 2008
    Assignees: Institut Francais du Petrole, Compagnie Generale de Geophysique, Gaz de France-Service National
    Inventors: Patrick Meynier, Axelle Baroni
  • Patent number: 7260021
    Abstract: The present invention provides a method for harmonic noise attenuation in correlated sweep data in seismic exploration. The method includes forming a plurality of correlation data subsets using a plurality of sweep data sets and a correlation reference sequence. The method further includes estimating a noise level in a correlation data set using the correlation data subsets and subtracting the estimated noise level from the correlation data set.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: August 21, 2007
    Assignee: WesternGeco L.L.C.
    Inventor: Rainer Moerig