Seismic Wave Detection Patents (Class 181/122)
  • Patent number: 10613240
    Abstract: Power consumption of a seismic sensor is suppressed. The seismic sensor is operated in a power-saving mode and a measuring mode in which the power consumption is larger than that of the power-saving mode. The seismic sensor includes: a measuring part configured to measure an acceleration; an index calculator configured to transition from the power-saving mode to the measuring mode to calculate an index value indicating a size of an earthquake when the acceleration measured with the measuring part exceeds a first threshold; and a threshold adjuster configured to change the first threshold so as to increase the first threshold relative to a predetermined reference value when a tendency of the acceleration measured with the measuring part satisfies a predetermined condition.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: April 7, 2020
    Assignee: OMRON Corporation
    Inventors: Naotsugu Ueda, Hiroyuki Mino, Yoshitaka Tsurukame
  • Patent number: 10451515
    Abstract: Extensions exited from electrodes of an electroscan probe, allowing for operation in a wide range of pipe sizes, particularly large diameter pipes, by extending the maximum effective distance of the electric fields generated by the probe. The extensions preferably extend radially from each of the electrodes, and are sized to bring tips of the extensions close to the pipe wall. The extensions can be joined by lanyards to assist in keeping them spaced apart. At least some extensions preferably have bulbous tips, preferably at least partially formed of non-conductive material to keep adjacent extensions from touching each other, especially extensions coupled to different electrodes. The extensions, in one embodiment, are threaded into collars adjacent to each electrode and selected to have a length appropriate for the pipe diameter.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: October 22, 2019
    Assignee: Electro Scan, Inc.
    Inventors: Charles A. Hansen, Mark Grabowski, Cory Peters
  • Patent number: 10408954
    Abstract: The present application relates to a seismic sensor coupling device and method. Translational data in a first direction is measured by particle motion sensors contained in an elongated housing of a sensor device provided at an earth surface. The particle motion sensors are spaced apart along a second, different direction along a longitudinal axis of the elongated housing. Rotation data around a third direction is computed based at least in part on computing a gradient of the translational data with respect to the second direction. Coupling of the sensor to the earth and features related thereto are addressed in the present application.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: September 10, 2019
    Assignee: WESTERNGECO L.L.C.
    Inventor: Pascal Edme
  • Patent number: 10241219
    Abstract: A sensor device includes an elongated housing containing particle motion sensors spaced apart along a longitudinal axis of the elongated housing, where the elongated housing has a length that is greater than a width of the elongated housing. A second portion includes communication circuitry to communicate over a communication medium, the second portion coupled to the elongated housing and having a width that is greater than the width of the elongated housing.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: March 26, 2019
    Assignee: WESTERNGECO L.L.C.
    Inventors: Seth Friedly, Einar Holst, Kambiz Iranpour
  • Patent number: 10229576
    Abstract: A user equipment, an earthquake alert server and an earthquake alert method thereof are provided. The earthquake alert server divides a map into a plurality of geographic grids and receives earthquake reporting messages from a plurality of user equipments. The earthquake alert server monitors the number of reporting messages of each geographic grid within a time interval to determine candidate earthquake grids, and determines earthquake grids according to the adjacent relationship among the candidate earthquake grids. The earthquake alert server chooses any two of the earthquake grids to classify the earthquake grids into two groups and increases a far value of each earthquake grid in the group whose reporting time is later. After multiple choices, the earthquake alert server labels the earthquake grid having the smallest far value as the epicenter grid and transmits an earthquake alert message to a plurality of remote equipments accordingly.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: March 12, 2019
    Inventor: Wei-Chih Yang
  • Patent number: 10101486
    Abstract: Respective embodiments disclosed herein include methods and apparatuses (1) for surveying a mine bench or other material body using at least seismic data obtained via geophone and measurement module data synchronized via a wireless link; (2) for generating hyperspectral panoramic imaging data of a blast hole or other borehole; or (3) for allowing a neural network to facilitate a differential blast design that targets a first bench part more weakly than the differential blast design targets a second bench part (along the same mine bench) at least partly based on data indicative of a much higher concentration of a valuable material in the second bench part than in the first.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: October 16, 2018
    Assignee: DATACLOUD INTERNATIONAL, INC.
    Inventors: Daniel Palmer, Krishna Srinivasan
  • Patent number: 10042081
    Abstract: In one example, a system and method for correlating first well log data with a previously generated well with second well log data from an actively drilling well. A identifying a starting depth is identified above a geological formation. The first well log data is dynamically gain adjusted to the second well log data. The gain adjusted first well log data is dynamically depth warped to the second well log data to correlate the first well log data with the second well log data.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: August 7, 2018
    Assignee: Motive Drilling Technologies Inc.
    Inventors: Todd W. Benson, Brian E. Stokeld
  • Patent number: 9958565
    Abstract: Embodiments, including apparatuses, systems and methods, for attaching autonomous seismic nodes to a deployment cable. In an embodiment, an apparatus includes a seismic node having a direct attachment mechanism configured to directly attach the seismic node to a deployment line, the direct attachment mechanism being configurable between an open and/or unlocked position and a closed and/or locked position to release and retain the deployment line.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: May 1, 2018
    Assignee: Seabed Geosolutions B.V.
    Inventors: Richard Edward Henman, Johan Fredrik Næs, Arne Henning Rokkan, Mariann Ervik, Leif Johan Larsen, Fredrik Lund, Robert Schistad
  • Patent number: 9720116
    Abstract: In one aspect, a seismic data acquisition unit is disclosed including a closed housing containing: a seismic sensor; a processor operatively coupled to the seismic sensor; a memory operatively coupled to the processor to record seismic data from the sensor; and a power source configured to power the sensor, processor and memory. The sensor, processor, memory and power source are configured to be assemble as an operable unit in the absence of the closed housing.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: August 1, 2017
    Assignee: FAIRFIELD INDUSTRIES INCORPORATED
    Inventors: William Guyton, John C. Downey, Geoff Rice, Christopher T. Nikirk
  • Patent number: 9715026
    Abstract: A system and method of performing a microseismic fracture operation for a wellsite having a subterranean formation with a complex fracture network therein are provided. The method involves describing a relationship between microseismic events to determine the complex fracture network of the subterranean formation, generating a fault volume by extracting faults from the fracture network based on the relationship between the microseismic events, generating a discrete fracture network comprising discrete fractures from the complex fracture network by extracting fracture planes from the obtained fault volume, and simulating fracture geometry and proppant placement.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: July 25, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Efejera Akpodiate Ejofodomi, Xiaowei Weng
  • Patent number: 9611018
    Abstract: An apparatus (100) for deploying and retrieving seismic nodes (200) comprises a towing connection (101) connecting the apparatus (100) to a towing cable (10) running from a towing vessel; vertical control means (125; 5; 120, 12) for adjusting a height over the seafloor by means of the towing cable (10); horizontal control means (125; 130-133) for adjusting a horizontal position according to the desired path and deployment and retrieval means (151; 160, 170, 180) for deploying and receiving nodes (200) connected to a wire (150) at predetermined intervals along the path. The deployment means are preferably configured to deploy the nodes (150) without substantial pull from the previously deployed wire (150).
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: April 4, 2017
    Assignee: MAGSEIS AS
    Inventors: Jan B. Gateman, Ivar Gimse
  • Patent number: 9606254
    Abstract: Systems, methods, and software for determining properties of a medium surrounding an exterior portion of a well casing are described. In some aspects, the properties of the medium are determined based on measurements of detected acoustic energy and distances between one or more acoustic transmitters and two or more acoustic receivers. The measurements are obtained based on operating the transmitters and the receivers within a wellbore that includes the well casing.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: March 28, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Arthur Chuen Hon Cheng, Mark Elliott Willis, Tatiana Gilstrap, Robert Eric Epstein
  • Patent number: 9581706
    Abstract: An illustrative geophone with tunable resonance frequency includes a first inductive assembly including an inductive coil having a first magnet arranged therein, wherein the first magnet and the first inductive coil move relative to each other, and a second inductive assembly including a second inductive coil having a second magnet arranged therein, wherein the second magnet and the second inductive coil move relative to each other. A coupling element couples a movable element of the first inductive assembly with a moveable element of the second inductive assembly. The first inductive assembly employs tunable damping to modify a resonant frequency of the second inductive assembly.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: February 28, 2017
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Wei Hsuan Huang
  • Patent number: 9019797
    Abstract: Measurement data is received from first and second seismic sensors, where the first and second seismic sensors are oriented in opposite directions. Each of the first and second seismic sensors has a sensing element responsive to pressure and particle motion. The signals can be combined to remove the particle motion component of the measurement data and obtain pressure-only data. Alternatively, the signals can be combined to deghost the received measurement data.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: April 28, 2015
    Assignee: Westerngeco L.L.C.
    Inventor: Nicolas Goujon
  • Publication number: 20140202786
    Abstract: Disclosed is an optical seismic sensor system for measuring seismic events in a geological formation, including a surface unit for generating and processing an optical signal, and a sensor device optically connected to the surface unit for receiving the optical signal over an optical conduit. The sensor device includes at least one sensor head for sensing a seismic disturbance from at least one direction during a deployment of the sensor device within a borehole of the geological formation. The sensor head includes a frame and a reference mass attached to the frame via at least one flexure, such that movement of the reference mass relative to the frame is constrained to a single predetermined path.
    Type: Application
    Filed: January 23, 2013
    Publication date: July 24, 2014
    Inventors: A Craig Beal, Malcolm E. Cummings, Anton Zavriyev, Caleb A. Christensen, Keun Lee
  • Patent number: 8717844
    Abstract: The present disclosure generally relates to the use of a self-propelled underwater vehicle for seismic data acquisition. The self-propelled underwater vehicle is adapted to gather seismic data from the seafloor and transmit such data to a control vessel. The self-propelled underwater vehicle may be redeployed to several seafloor locations during a seismic survey. Methods for real-time modeling of a target zone and redeployment of the self-propelled underwater vehicle based on the modeling are also described.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: May 6, 2014
    Assignee: WesternGeco L.L.C.
    Inventors: Kenneth E. Welker, Julian Edward (Ed) Kragh
  • Patent number: 8699301
    Abstract: An apparatus and system for acquiring seismic data over a loose surface is disclosed. The apparatus includes a housing capable of moving on the loose surface with an opening configured at a bottom surface of the housing. The apparatus further includes a seismic sensing unit configured within the housing at an angle with respect to a horizontal plane. The horizontal plane may be the bottom surface of the housing. The seismic sensing unit is operable to retractably move within the housing towards and away from the opening. In response to the seismic sensing unit moving towards the opening, the seismic sensing unit establishes contact with the loose surface for acquiring the seismic data.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: April 15, 2014
    Assignee: King Abdulaziz City for Science and Technology
    Inventors: Tariq Ali Alkhalifah, Hashim Sari Almalki, Fahad Mohammed Almalki, Sajjad Ali Muhammad Khan Syed
  • Patent number: 8669881
    Abstract: A container data center includes a container, a plurality of power supplies, an electric switch system, a plurality of normally closed switches, an alarm device, and a controller. The electric switch system is received in the container. The plurality of normally closed switches are connected between the power supplies and the electric switch system. Each normally closed switch is connected with a corresponding one of the power supplies in series. The controller is connected to the normally closed switches and the alarm device, configured for receiving earthquake information containing an earthquake intensity, and configured for controlling the alarm device to activate alarms and controlling some of the normally closed switches or all the normally closed switches to open when the earthquake intensity is equal to or greater than a predetermined earthquake intensity.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: March 11, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Li-Wen Chang
  • Patent number: 8632274
    Abstract: A deployment method and system for ocean bottom seismometers (OBS) includes providing a plurality of circular shaped, wireless, self-contained OBS units. The circular shaped OBS units are loaded into a carrier and transported from a surface vessel to the ocean floor where a remotely operated vehicle (ROV) is utilized to individually place the plurality of circular OBS units on the ocean floor. Placement of each OBS unit is accomplished by utilizing suction mechanism attached to a robotic arm. The suction mechanism is defined about an axis and employs a suction cup to individually engage each circular shaped OBS unit so that the suction mechanism is coaxially aligned with the OBS unit, and move the OBS unit from a first location to the ocean floor.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: January 21, 2014
    Assignee: Fairchild Industries, Inc.
    Inventors: James N. Thompson, Clifford H. Ray, Glenn D. Fisseler, Roger L. Fyffe
  • Patent number: 8542556
    Abstract: A vibration sensor system for contacting the surface of a solid medium for detecting horizontally polarized shear waves and compressional waves. At least two contact points interface between a vibration sensor array and the solid medium to provide uninterrupted contact with the medium during detection of dynamic motions in the medium. A single vibration sensor is mounted on at least two adjacent contact points to convert detected dynamic motions to corresponding electrical signals. The single vibration sensor mounted on the two adjacent contact points forms a sub-array. The vibration sensor system has at least two sub-arrays. A conditioning and combining member treats sensor electrical signals from at least two sub-arrays to form a composite output signal for the system.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: September 24, 2013
    Inventor: Thomas E. Owen
  • Patent number: 8534959
    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 comprises a frame in which is mounted a structure for seating and releasing said receivers. The structure may comprise a movable carousel or a movable conveyor or fixed parallel rails or a barrel. The structure includes a discharge port on said frame and a discharge mechanism for removing and retrieving said receivers. A method for deployment and retrieval of ocean bottom seismic receivers comprises the steps of loading a carrier with a plurality of receivers, attaching said carrier to an ROV, utilizing said ROV to transport the carrier from a surface vessel to a position adjacent the seabed and thereafter utilizing said ROV to remove receivers from said carrier and place the receivers on the seabed.
    Type: Grant
    Filed: January 17, 2005
    Date of Patent: September 17, 2013
    Assignee: Fairfield Industries Incorporated
    Inventors: James N. Thompson, Clifford H. Ray, Glenn D. Fisseler, Roger L. Fyffe, Stephen W. Mitchell, William E. Boone
  • Patent number: 8400879
    Abstract: A sensor vehicle of the present invention has one or more rotatable track means (parallel if two or more) spaced apart by a support frame and adapted to be towed or otherwise moved in a forward direction parallel to a forward axis of said track means. Rotatable track means have two or more supporting wheels aligned on a vertical plane along the forward axis, which axis is generally parallel to a ground surface upon which said sensor vehicle travels. Tracked vehicles are well known in the art of ground and earth moving equipment having flexible, elastomer-based tracks or segmented metal tracks with associated support frames and wheels, most of which may be adapted to achieve the objects of the invention.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: March 19, 2013
    Inventor: Yi Liao
  • Patent number: 8228761
    Abstract: A marine seismic exploration method and system comprised of continuous recording, self-contained ocean bottom pods characterized by low profile casings, An external bumper is provided to promote ocean bottom coupling and prevent fishing net entrapment. Pods are tethered together with flexible, non-rigid, non-conducting cable used to control pod deployment. Pods are deployed and retrieved from a boat deck configured to have a storage system and a handling system to attach pods to cable on-the-fly. The storage system is a juke box configuration of slots wherein individual pods are randomly stored in the slots to permit data extraction, charging, testing and synchronizing without opening the pods. A pod may include an inertial navigation system to determine ocean floor location and a rubidium clock for timing. The system includes mathematical gimballing. The cable may include shear couplings designed to automatically shear apart if a certain level of cable tension is reached.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: July 24, 2012
    Assignee: Fairfield Industries Incorporated
    Inventors: Clifford H. Ray, Glenn D. Fisseler, James N. Thompson, Hal B. Haygood
  • Patent number: 8061471
    Abstract: A seismic vibrator has a base plate with at least four isolators isolating a frame from the base plate. Each of these isolators is offset from the plate's footprint on shelves to free up area on the plate's top surface. An accelerometer disposed directly on the base plate detects the acceleration imparted to the plate. To reduce flexing and bending, the plate has an increased stiffness and approximately the same mass of a plate for a comparably rated vibrator. The accelerometer disposes at a particular location of the plate that experiences transition between longitudinal flexing along the plate's length. This transition location better represents the actual acceleration of the plate during vibration and avoids overly increased and decreased acceleration readings that would be obtained from other locations on the plate.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: November 22, 2011
    Assignee: Inova, Ltd.
    Inventor: Zhouhong Wei
  • Publication number: 20110266086
    Abstract: The present disclosure generally relates to the use of a self-propelled underwater vehicle for seismic data acquisition. The self-propelled underwater vehicle is adapted to gather seismic data from the seafloor and transmit such data to a control vessel. The self-propelled underwater vehicle may be redeployed to several seafloor locations during a seismic survey. Methods for real-time modeling of a target zone and redeployment of the self-propelled underwater vehicle based on the modeling are also described.
    Type: Application
    Filed: September 13, 2010
    Publication date: November 3, 2011
    Inventors: Kenneth E. Welker, Julian Edward (Ed) Kragh
  • Patent number: 7900700
    Abstract: The invention generally relates a method of determining completion criteria for a coal bed methane reservoir having a plurality of coal seams.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: March 8, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Arpana Sarkar, Rajiv Sagar, Theodore Klimentos, Indrajit Basu
  • Publication number: 20100155137
    Abstract: In one aspect of the invention, a downhole tool string component comprises a tubular body with a first and a second tool joint adapted to connect to adjacent tool string components, and a central bore adapted to pass drilling mud between the joints. A sleeve circumferentially disposed about an outer surface of the tubular body. The sleeve is rigidly attached to the outer surface at first and second sleeve ends and forming at least three stabilizer blades. A nuclear source and at least one nuclear detector are disposed within a gap formed between the inner surface of the sleeve and the outer surface of the tubular body.
    Type: Application
    Filed: December 19, 2008
    Publication date: June 24, 2010
    Inventors: David R. Hall, Paula Turner, Scott Woolston, Nathan Nelson
  • Patent number: 7684284
    Abstract: The current invention minimizes the energy losses by pointing the geophone's internal system, which consists of a magnet bar, coil, and springs, towards signals reflected from targets.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: March 23, 2010
    Assignee: Saudi Arabian Oil Company
    Inventor: Mohammad Abdul-Ghani Al-Jadani
  • Publication number: 20100067018
    Abstract: Interrogation of a phase based transducer is performed by comparing the state of the transducer at two points in time to determine the rate of change with time of the measurand represented as a phase change. The rate of change, or derivative of the phase change typically has a much smaller amplitude than the signal itself, and the derivative measurement can therefore be thought of as a low sensitivity measurement to be used instead of or in combination with the normal signal measurement having higher sensitivity. In this way, large amplitude signals which might otherwise be subject to overscaling effects can be measured more effectively. For a signal with the majority of its energy centred at approximately 800 Hz, for example, the derivative of that signal will typically be attenuated by 60 dB with a period between the two measurement times of 200 ns.
    Type: Application
    Filed: March 10, 2008
    Publication date: March 18, 2010
    Inventors: Roger Ian Crickmore, Jolyon DeFreitas
  • Patent number: 7650963
    Abstract: An acoustic isolator for attenuating through-tool acoustic signals comprises a plurality of u-shaped link members, where each link member has two sets of ears. A plurality of yoke members are adapted to fit between cooperating sets of ears. A plurality of pins connect the plurality of u-shaped link members to the plurality of yoke members for providing limited flexural compliance. The isolator may be made from metallic and/or composite materials.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: January 26, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: Charles E. Redding, Herbert W. Beimgraben, Charles Hartmann, Douglas Patterson
  • Patent number: 7646670
    Abstract: The present invention relates to an improved autonomous node seismic recording device having an integrated modular design and one or more features that assist coupling of the unit to the sea floor in order to improve the vector fidelity of seismic signal measurement.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: January 12, 2010
    Assignee: CGGVeritas Services (U.S.) Inc.
    Inventors: Peter W. Maxwell, Timothy R. E. Owen, Stuart Denny, Tor Haugland, Joshua Ronen
  • Patent number: 7603950
    Abstract: A piezo cable is provided as an impact sensor, which allows up to four different measuring principles. In addition to the piezoelectric measurement, which causes a piezoelectric pulse in an impact, a capacitive measurement, an inductive measurement and a resistance measurement are possible.
    Type: Grant
    Filed: March 13, 2004
    Date of Patent: October 20, 2009
    Assignee: Robert Bosch GmbH
    Inventor: Anton Dukart
  • 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: 7382690
    Abstract: In the present invention, a seismic receiver contains an onboard digitizer that samples and converts a signal from detected seismic energy into the digital domain. The receiver contains an analog to digital converter, a transmission circuitry, and a link to the seismic detection circuitry. The signal from the seismic detection circuitry is converted into a digital signal, which is then relayed to the data recorder. These components are all resident to the receiver itself. Additional control circuitry is employed to provide clocking and testing functions. These receivers communicate with one another, and provide sampled seismic data on an individual basis. The components may be prepared on a PCB and put inside the receiver cap. The PCB may be flexible in nature, as to provide a maximum of surface mounted components in the smallest amount of space.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: June 3, 2008
    Inventor: Geza Nemeth
  • 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
  • Publication number: 20080006474
    Abstract: A seismic sensor for a security system is described, the sensor comprising: a piezoelectric transducer suitable for converting mechanical stresses into electrical signals; a base structure including a seat suitable for receiving said transducer; a cover element that can be coupled with the base structure to define an inner chamber of said sensor. The sensor is wherein the cover element has an essentially bell-shaped body, is equipped with a bottom opening and includes side walls that extend around an axis of said opening, the base structure being provided with a collar that surrounds said seat and that crosses said bottom opening so as to define at least one channel communicating with said chamber between the side walls of said cover element and said collar.
    Type: Application
    Filed: June 7, 2007
    Publication date: January 10, 2008
    Inventors: Giorgio Tonelli, Aldo Tonelli
  • Patent number: 7310287
    Abstract: A marine seismic exploration method and system comprised of continuous recording, self-contained ocean bottom pods characterized by low profile casings. An external bumper is provided to promote ocean bottom coupling and prevent fishing net entrapment. Pods are tethered together with flexible, non-rigid, non-conducting cable used to control pod deployment. Pods are deployed and retrieved from a boat deck configured to have a storage system and a handling system to attach pods to cable on-the-fly. The storage system is a juke box configuration of slots wherein individual pods are randomly stored in the slots to permit data extraction, charging, testing and synchronizing without opening the pods. A pod may include an inertial navigation system to determine ocean floor location and a rubidium clock for timing. The system includes mathematical gimballing. The cable may include shear couplings designed to automatically shear apart if a certain level of cable tension is reached.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: December 18, 2007
    Assignee: Fairfield Industries Incorporated
    Inventors: Clifford H. Ray, Glenn D. Fisseler, Hal B. Haygood
  • Patent number: 7295494
    Abstract: A pressure gradient sensor for seismic and other applications utilizing the principle of diamagnetic drift. The sensor comprises at least one transducer, each transducer made of or containing a medium having at least one species of mobile charged particles such as electrons or holes that exhibit diamagnetic drift under a pressure gradient. A magnet and a pair of electrodes are installed in each transducer. Diamagnetic drift current collected by the electrodes can be measured by an ammeter or similar device, and formulas and methods are disclosed to determine the pressure gradient from the measured current.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: November 13, 2007
    Assignee: ExxonMobil Upstream Research Company
    Inventor: Mark A. Meier
  • Patent number: 7260024
    Abstract: A housing for a seismic sensing element (3) for use on the earth's surface comprises connecting means (5) for connecting the housing (3) to a support cable (2) so as to allow relative movement between the sensor housing (3) and the cable (2). This de-couples the sensor housing from the support cable, and improves the fidelity of the sensor. The connecting means (5) preferably comprises resilient connecting elements, to prevent the transmission of vibrations between the support cable and the sensor housing. The sensor housing (3) preferably has a flat base (1), so that there is good coupling between the sensor housing and the earth. Alternatively, the sensor housing can be fitted with a base member ((24a, 24b, 24c) that has at least one flat face (26, 26a, 26b, 26c).
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: August 21, 2007
    Assignee: Western Geco L.L.C.
    Inventors: Nicolas Goujon, Kambiz Iranpour Mobarekeh, James Edward Martin, Johan Fredrik Naes, Rune Sindre Voldsbekk
  • Patent number: 7255196
    Abstract: A system and method for reducing acoustic, wind or other background noise that may interfere with sensing of a seismic signal is provided. More specifically, a shield is provided to enclose a geophone and thereby protect it from harmful noise. The shield may comprise a rigid shell, a structural damping material, an acoustically absorptive material, and a compliant seal for coupling the shield to the ground or reference surface.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: August 14, 2007
    Assignee: BBN Technologies Corp.
    Inventors: William B. Coney, Peter A. Krumhansl
  • Patent number: 7254093
    Abstract: A seismic data collection unit having multiple separate geophones/geophone packages positioned in a housing wherein the geophones are offset from a vertical axis so that summing of the geophones' respective outputs minimizes certain noise in the unit's output. Specifically, the offset geophones are physically positioned or mathematically configured so as to be symmetrical about a selected vertical axis in order to cancel out certain noise in a seismic signal. The particular placement of the geophones within the housing is preferably selected so that the vertical axis around which the geophones are positioned passes through the center of gravity of the unit.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: August 7, 2007
    Assignee: Fairfield, Industries, Inc.
    Inventors: Clifford H. Ray, Glenn D. Fisseler
  • Patent number: 7210555
    Abstract: An acoustic attenuator includes a housing having an inner side surface which defines an interior chamber and at least one dampening member both physically and acoustically coupled to the housing and projecting into the interior chamber. Acoustic energy propagating within the housing is deflected into the dampening members for acoustically dispersal within the interior chamber. In various aspects thereof, the dampening members may include one or a group of two or more generally cylindrical sleeves having one end both physically and acoustically coupled to the housing and a second end projecting into the interior chamber. Preferably, when a group of two or more cylindrical sleeves are employed, the sleeves are nested within one another. The dampening members may further include a second, oppositely disposed, group of two or more acoustic attenuators nested within one another and interdigitated with the first group of cylindrical sleeves.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: May 1, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Vimal V. Shah, Eugene J. Linyaev, Donald G. Kyle, Wallace R. Gardner
  • Patent number: 7178627
    Abstract: The invention provides methods and apparatus for detecting seismic waves propagating through a subterranean formation surrounding a borehole. In a first embodiment, a sensor module uses the rotation of bogey wheels to extend and retract a sensor package for selective contact and magnetic coupling to casing lining the borehole. In a second embodiment, a sensor module is magnetically coupled to the casing wall during its travel and dragged therealong while maintaining contact therewith. In a third embodiment, a sensor module is interfaced with the borehole environment to detect seismic waves using coupling through liquid in the borehole. Two or more of the above embodiments may be combined within a single sensor array to provide a resulting seismic survey combining the optimum of the outputs of each embodiment into a single data set.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: February 20, 2007
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Phillip B. West, James R. Fincke, Teddy R. Reed
  • Patent number: 7085196
    Abstract: In the present invention, a seismic receiver contains an onboard digitizer that samples and converts a signal from detected seismic energy into the digital domain. The receiver contains an analog to digital converter, a transmission circuitry, and a link to the seismic detection circuitry. The signal from the seismic detection circuitry is converted into a digital signal, which is then relayed to the data recorder. These components are all resident to the receiver itself. Additional control circuitry is employed to provide clocking and testing functions. These receivers communicate with one another, and provide sampled seismic data on an individual basis. The components may be prepared on a PCB and put inside the receiver cap. The PCB may be flexible in nature, as to provide a maximum of surface mounted components in the smallest amount of space.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: August 1, 2006
    Inventor: Geza Nemeth
  • Patent number: 7048089
    Abstract: The invention provides methods and apparatus for detecting seismic waves propagating through a subterranean formation surrounding a borehole. In a first embodiment, a sensor module uses the rotation of bogey wheels to extend and retract a sensor package for selective contact and magnetic coupling to casing lining the borehole. In a second embodiment, a sensor module is magnetically coupled to the casing wall during its travel and dragged therealong while maintaining contact therewith. In a third embodiment, a sensor module is interfaced with the borehole environment to detect seismic waves using coupling through liquid in the borehole. Two or more of the above embodiments may be combined within a single sensor array to provide a resulting seismic survey combining the optimum of the outputs of each embodiment into a single data set.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: May 23, 2006
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Phillip B. West, James R. Fincke, Teddy R. Reed
  • Patent number: 7035167
    Abstract: A seismic sensor, has a case, a pre-charged, non-conductive membrane located between two plates that form a capacitor and accommodated inside the case, with one of the plates being immovable relative to the case and the other of the plates being movable relative to the one plate under the action of seismic activity of a medium in which the sensor is located, so that the capacitor produces an electrical signal responsive to the seismic activity, and a mass increasing element associated with the movable plate so as to increase mass of the movable plate and therefore enhance oscillations of the movable plate under the action of the seismic activity.
    Type: Grant
    Filed: September 11, 2003
    Date of Patent: April 25, 2006
    Assignee: General Phosphorix
    Inventors: Alexander Pakhomov, Tim Goldburt
  • Patent number: 7016262
    Abstract: A seismic sensor, comprising a case, a pre-charged, non-conductive membrane located between two plates that form a capacitor and accommodated inside the case, with one of the plates being immovable relative to the case and the other of the plates being movable relative to the one plate under the action of seismic activity so that the capacitor produces an electrical signal responsive to the seismic activity of a medium in which the sensor is located, and a mass increasing element associated with the movable plate so as to increase mass of the movable plate and therefore to enhance oscillations of the movable plate under the action of the seismic activity, the mass increasing element being formed as a further case which is connected to the movable plate and is located in condition of equilibrium in an inoperative position of the sensor.
    Type: Grant
    Filed: September 11, 2003
    Date of Patent: March 21, 2006
    Assignee: General Phosphorix, LLC
    Inventors: Alexander Pakhomov, Tim Goldburt
  • Patent number: 6985086
    Abstract: The logging tool of this invention includes a transmitter conveyed on a drilling collar for exciting a quadrupole signal in a borehole being drilled by a drill bit and a receiver for receiving the signal. The transmitter is operated at a frequency below the cut-off frequency of the quadrupole collar mode. The received signal consists primarily of the formation quadrupole mode which, at low frequencies, has a velocity that approaches the formation shear velocity. The transmitter, in one embodiment, consists of eight equal sectors of a piezoelectric cylinder mounted on the rim of the drilling collar. The value of the cut-off frequency is primarily dependent on the thickness of the drilling collar. Alternatively, the transmitter may be operated to produce both the collar mode and the formation mode and a processor may be used to filter out the collar mode.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: January 10, 2006
    Assignee: Baker Hughes Incorporated
    Inventors: Xiao Ming Tang, Douglas J. Patterson, Tsili Wang, James V. Leggett, III, Vladimir Dubinksy
  • Patent number: RE41829
    Abstract: A method for seismic exploration using nonlinear conversions between electromagnetic and seismic energy, with particular attention to the electromagnetic source waveform used. According to the invention, seismic returns from a source waveform are correlated with a reference waveform, with both waveforms custom designed to minimize both correlation side lobes and interference from linear electroseismic effects. A waveform element is selected which may be sequenced by a binary or similar digital code embodying the desired custom design to generate an input sweep with the needed depth penetration and noise suppression. Correlation of the seismic response with the reference waveform in a data processing step mathematically aggregates the seismic response from the input sweep into a single wavelet. Preferred binary digital codes include prescribed variations of maximal length shift-register sequences. Also, an apparatus for generating the desired waveforms.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: October 19, 2010
    Assignee: ExxonMobil Upstream Research Co.
    Inventors: Scott C. Hornbostel, Arthur H. Thompson, Thomas C. Halsey, Robert A. Raschke, Clint A. Davis