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| Number | Title | Issue Date |
| 8175765 | Controlling movement of a vessel traveling through water during a seismic survey operation To perform control of movement of a marine vessel traveling through water during a seismic survey operation, input information relating to factors that affect a speed of the marine vessel is received. The speed of the marine vessel is adjusted in response to the rec... | 05/08/2012 |
| 8174928 | Reducing a number of required channels for seismic sensors To reduce a number of required channels for a survey system having seismic sensors, the seismic sensors are partitioned into groups of corresponding seismic sensors. An aggregation unit applies different transformations of signals of the seismic sensors within a par... | 05/08/2012 |
| 8174927 | Method for optimizing acoustic source array performance A technique facilitates obtaining seismic data in a marine environment. An array of acoustic sources is deployed in a marine environment. The array can be utilized for creating acoustic pulses that facilitate the collection of data on subsea structures. The methodol... | 05/08/2012 |
| 8170802 | Communication between sensor units and a recorder A seismic acquisition system. In one implementation, the seismic acquisition system includes a recorder having a memory having a communication protocol application stored therein and one or more sensor units in communication with the recorder through a communication... | 05/01/2012 |
| 8164978 | Interbed multiple prediction A method and apparatus for predicting interbed multiples is described herein. Trace geometries may be generated for one or more desired shot-side traces, one or more desired receiver-side traces, and one or more desired interbed multiple generator traces, for a firs... | 04/24/2012 |
| 8164977 | Simulating up-going pressure wavefield Various methods for simulating up-going pressure wavefield data. In one implementation, a processing apparatus may receive pressure data from pressure sensors that may be installed on a first and second streamer of an over/under streamer pair. The processing apparat... | 04/24/2012 |
| 8149647 | Seismic cable and acoustically decoupled sensor A robust seismic cable and sensor module system wherein the sensor modules include a housing and sensing unit. The housing substantially transfers the load and torque of the cable from one end of the housing to the other bypassing the sensing unit and the sensing un... | 04/03/2012 |
| 8139440 | Spectral conditioning for surface seismic data A method for spectrally conditioning surface seismic data. In one implementation, the method may include correcting surface seismic data for distortions due to anomalous spectral amplitudes, thereby generating a first set of corrected data; correcting the first set ... | 03/20/2012 |
| 8136625 | Attenuating out of band energy emitted from seismic sources A method for attenuating out of band energy emitted from a seismic source used in a marine seismic survey. The method includes disposing the seismic source in a body of water and releasing a gas into a volume of water surrounding the seismic source. The released gas... | 03/20/2012 |
| 8136383 | Calibrating an accelerometer To calibrate an accelerometer, a seismic cable that carries the accelerometer is rotated. Data measured by the accelerometer as the seismic cable is rotated is received, and at least one calibration parameter according to the received data is computed. The at least ... | 03/20/2012 |
| 8130590 | Wirelessly activating a unit of a subterranean survey system for testing To test at least one unit of a subterranean survey system, the unit detects presence of wireless signaling of a mobile device. After the detecting, a wireless connection is established between the unit and the mobile device. A test at the unit is performed in respon... | 03/06/2012 |
| 8120362 | Surveying a subterranean structure using electromagnetic measurements and microorganism content data A survey apparatus for surveying a subterranean structure includes an electromagnetic (EM) sensing element to measure an EM field received from the subterranean structure, and a sample collector activatable to collect a sample of soil. ... | 02/21/2012 |
| 8116166 | 3D deghosting of multicomponent or over / under streamer recordings using cross-line wavenumber spectra of hydrophone data A technique includes obtaining pressure data that was acquired by seismic sensors towed as part of a three-dimensional spread of streamers and obtaining particle motion data, which are indicative of particle motion at locations of the sensors. The technique includes... | 02/14/2012 |
| 8104346 | MEMS-based capacitive sensor An apparatus includes a seismic acquisition system that includes an accelerometer. The accelerometer includes a capacitive MEMS-based sensor, a controller and a charge amplifier. The sensor includes a proof mass; input terminals to receive a first signal; and an out... | 01/31/2012 |
| 8100078 | Steerable hydrofoil The present invention provides a steerable hydrofoil. The apparatus includes at least one steerable hydrofoil panel, at least one body part coupled to the at least one steerable hydrofoil panel to allow the at least one steerable hydrofoil panel to rotate about an a... | 01/24/2012 |
| 8098543 | Estimation of stress and elastic parameters Various implementations described herein are directed to estimating stresses and elastic parameters in a formation based on seismic data. In one implementation, wide azimuth seismic data may be used to derive anisotropic elastic parameters. Furthermore, stresses may... | 01/17/2012 |
| 8094515 | Seismic data visualizations Implementations of various technologies for a method for processing seismic data. A first portion of a record of pre-stack seismic data may be displayed in a three-dimensional XYZ (3-D XYZ) space. A selection may be received of a second portion of the record of the ... | 01/10/2012 |
| 8094513 | Determining positioning of survey equipment using a model To performing positioning of survey equipment, measurements of acoustic signals reflected from at least one boundary of a marine environment are received. The reflected acoustic signals are reflected from the at least one boundary in response to acoustic signaling o... | 01/10/2012 |
| 8085620 | Determining a position of a survey receiver in a body of water To determine a position of a survey receiver used to measure a response of a subterranean structure to a survey signal, positions of the survey receiver as the survey receiver descends in a body of water to a surface are received from an acoustic ranging system. Mea... | 12/27/2011 |
| 8080999 | Sensor cable for electromagnetic surveying A sensor cable for surveying. The sensor cable has a housing, which includes one of more electrodes and a conductive gel surrounding the one or more electrodes. The conductive gel is configured to conduct electrical current to the one or more electrodes and keep the... | 12/20/2011 |
| 8079440 | Determining the polarity of movement of an actuator mass in a seismic vibrator A technique or mechanism for use with a vibrator to be employed for subterranean surveying includes receiving, from a sensor, a unipolar indication of movement of an actuator mass of the vibrator. According to the indication from the sensor, a correlation is determi... | 12/20/2011 |
| 8078406 | Processing seismic data in common group-center gathers A method for processing seismic data. The method includes plotting a travel-time curve and one or more actual times that each seismic receiver receives one or more seismograms on a graph. The travel-time curve represents an approximate time that each seismic receive... | 12/13/2011 |
| 8077544 | Dual-wavefield multiple attenuation Method for attenuating surface multiple reflections in dual-wavefield seismic data. In one implementation, the method may include: (a) performing wavefield separation on dual-wavefield seismic data to separate events in the seismic data into data sets according to g... | 12/13/2011 |
| 8077542 | Determining the inline relationship of network nodes in a subterranean survey data acquistion network A system includes a subterranean survey data acquisition network and a processor. The network has first nodes that are distributed along a length of the network between a first end of the network and a second end of the network. Each of the first nodes is capable of... | 12/13/2011 |
| 8077541 | Testing a sensor to produce a filter for noise attenuation To test a seismic sensor, an output of the seismic sensor in response to a test signal applied by a signal generator is measured. According to a first function that corresponds to a reference response of the seismic sensor and according to a second function that cor... | 12/13/2011 |
| 8072841 | Adaptive wavefront reconstruction A method for generating a synthetic seismogram. In one implementation, a ray tracing may be performed on a subsurface. The ray tracing may generate a plurality of rays. A first seismic wavefront may be reconstructed by triangulating a first plurality of control poin... | 12/06/2011 |
| 8055449 | Determining fault transmissivity in a subterranean reservoir To determine fault transmissivity in a subterranean reservoir, fault structures in the subterranean reservoir are identified, and elastic impedance data is computed from well log data and seismic data. Normalization parameters that have a predetermined orientation w... | 11/08/2011 |
| 8054711 | Method and apparatus for attenuation wind noise in seismic data A method and apparatus for use in seismic prospecting are disclosed. The method includes: attenuating coherent noise in a seismic data set generated from a sweep signal; and correlating the coherent noise-attenuated seismic data set to the sweep signal. The apparatu... | 11/08/2011 |
| 8050139 | System and method for towing acoustic source arrays A technique facilitates the production of acoustic pulses used in marine seismic surveys. A source array system comprises a plurality of acoustic sources suspended from a float in a plurality of layers positioned at different vertical levels. A bridle is coupled to ... | 11/01/2011 |
| 8021080 | Containerized geophysical equipment handling and storage systems, and methods of use Systems and methods for marine seismic cable deployment and retrieval are described. One system comprises a plurality of portable containers, each container temporarily storing a marine seismic component, at least some of the containers able to be removably fastened... | 09/20/2011 |
| 8014677 | Optical activation of one or more communication units in a survey system To control activation of one or more communication units in a survey system that performs surveying of a subterranean structure, optical activity on at least one optical link connected to at least one communication unit that is part of a survey system is detected. I... | 09/06/2011 |
| 8010291 | Processing measurement data that involves computing a derivative of the measurement data that represents a subterranean structure To process measurement data representing a subterranean structure, a derivative of the measurement data collected by at least one survey receiver is computed, with respect to frequency. A response representing the subterranean structure is then computed based on the... | 08/30/2011 |
| 8008921 | Surveying using vertical electromagnetic sources that are towed along with survey receivers A system to perform a marine subterranean survey includes at least one vertical electromagnetic (EM) source and at least one EM receiver to measure a response of a subterranean structure that is responsive to EM signals produced by the vertical EM source. At least o... | 08/30/2011 |
| 8000171 | Seismic sensor housing An example of a cable positioning mechanism for directing a cable into a seismic sensor housing for connection with the seismic sensor includes a member sized to connect with a seismic sensor housing, the cable passing through the member at opposing anchor points fo... | 08/16/2011 |
| 7999552 | Sensor cable for electromagnetic surveying A sensor cable for surveying. The sensor cable may comprise at least one pair of current sensor electrodes and an amplifier. The current sensor electrodes may be disposed along opposite sides of the sensor cable. The current sensor electrodes may be configured to de... | 08/16/2011 |
| 7979210 | Correction for errors caused by variation in water conditions Method for processing seismic data to correct for errors caused by variation in water conditions. In one implementation, the method may include (a) applying a dip correction to a plurality of observed water bottom reflection times using a model water velocity and an... | 07/12/2011 |
| 7974154 | Vibroseis calibration technique and system A technique includes operating a seismic vibrator, including driving the seismic vibrator at different frequencies and driving forces. The technique includes monitoring a parameter affected by the operation of the seismic vibrator during the frequency sweep and base... | 07/05/2011 |
| 7974151 | Cetacean protection system An embodiment according to one or more aspects of the present disclosure for conducting a marine survey includes towing a survey spread comprising a plurality of receivers and an energy source along a selected course; emitting a signal from an energy source; receivi... | 07/05/2011 |
| 7970546 | Diplet-based imaging of seismic data in shot or receiver records Methods, systems, and software for representing seismic shot or receiver data as a superposition of a plurality of diplets are disclosed. The method includes decomposing one or more prestack shot or receiver records into a set of diplets, migrating the diplets using... | 06/28/2011 |
| 7967069 | Active seismic monitoring of fracturing operations A method for managing a fracturing operation. In one implementation, the method may include positioning a seismic source and at least one seismic receiver near a hydrocarbon reservoir; pumping a fracturing fluid into a well bore of the hydrocarbon reservoir; perform... | 06/28/2011 |
