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Communications, electrical: acoustic wave systems and devices March listing by industry category 03/12

20120075950 - Processing seismic data: Embodiments of the invention provide a method of processing marine seismic data, the data having been acquired using a “dense over/sparse under” streamer array having N over streamers disposed at a first depth and M under streamers disposed at a second depth greater than the first depth, where 0<M<N. The... Agent: Westerngeco LLC

20120075951 - Device and method for imaging of non-linear and linear properties of formations surrounding a borehole: In some aspects of the disclosure, a method and an apparatus is disclosed for investigating material surrounding the borehole. The method includes generating a first low frequency acoustic wave within the borehole, wherein the first low frequency acoustic wave induces a linear and a nonlinear response in one or more... Agent: Chevron U.s.a., Inc.

20120075952 - Device and method for imaging of non-linear and linear properties of formations surrounding a borehole: In some aspects of the disclosure, a method and an apparatus is disclosed for investigating material surrounding the borehole. The method includes generating within a borehole an intermittent low frequency vibration that propagates as a tube wave longitudinally to the borehole and induces a nonlinear response in one or more... Agent: Chevron U.s.a., Inc.

20120075953 - Method and apparatus for evaluating a cemented borehole casing: A method of evaluating a cased borehole in an earth formation includes: emitting at least one acoustic signal into the borehole via an acoustic source and detecting a return acoustic signal via an acoustic sensor, the borehole including a casing and a casing support material disposed between the casing and... Agent: Baker Hughes Incorporated

20120075954 - Device and method for calculating 3d angle gathers from reverse time migration: A method for calculating angle domain common image gathers (ADCIGs). The method includes calculating a source wavefield pF of a seismic source; calculating a receiver wavefield pB of a seismic receiver; applying an algorithm of anti-leakage Fourier transform (ALFT) to transform the source wavefield pF to a wavenumber domain; applying... Agent: Cggveritas Services (u.s.) Inc.

20120075955 - Efficient seismic source operation in connection with a seismic survey: An embodiment includes determining whether first and second seismic sources are ready to perform seismic sweeps. When either of the first and the second seismic sources are determined to be unready to perform seismic sweeps, the method includes (a) determining a predicted time delay that will transpire before the first... Agent:

20120075956 - Mag-phase process: An active sonar system comprising a transmitter for providing a sonar signal, a receiver for receiving a reflected return signal, a processor of processing and extracting both magnitude and phase information from the return signal, and display unit for presenting both magnitude and phase information from the return signal to... Agent: Lockheed Martin Corporation

20120075957 - Estimation of loudspeaker positions: A system for determining loudspeaker position estimates comprises motion sensors (201, 203, 205) arranged to determine motion data for a user movable unit where the motion data characterizes movement of the user moveable unit. A user input (207, 209) receives user activations which indicate that at least one of a... Agent: Koninklijke Philips Electronics N.v.

20120075958 - Cavity detection: An apparatus for detecting a cavity comprising a signal receiver, a signal analyzer and a threshold excedent determination processor. The signal receiver receives a reflected signal resulting from an interaction of multi-frequency irradiating signal(s) with at least one cavity. The irradiating signal may include an electromagnetic or acoustic signal above... Agent:

20120069701 - Ultrasonic transducer and ultrasonic diagnostic apparatus provided with same: For disposing projections of insulating film protruding into a hollow part in CMUT in order to suppress injection of electrical charge into the insulating film due to contact of a lower surface of a membrane with a lower surface of the hollow part, there are provided a structure of disposed... Agent: Hitachi Medical Corporation

20120069702 - Marine seismic survey systems and methods using autonomously or remotely operated vehicles: Systems and methods for carrying out seismic surveys and/or conducting permanent reservoir monitoring with autonomous or remote-controlled water vehicles, including surface and submersible vehicles, are described. Additional methods carried out by autonomous or remote-controlled water vehicles and associated with seismic surveys further described.... Agent: Westerngeco L.L.C.

20120069703 - Seismic streamer: There is provided a solid seismic streamer cable for use in seismic surveying in marine environments. The streamer is characterised by a buffer layer 2 which is provided with a cut-out 50 and a sensor element arranged in the cut-out 50. There is also provided an associated hydrophone for integration... Agent: Optoplan

20120069704 - Methods and apparatus for determining seismic streamer array geometry and seismic sensor response: A method for marine seismic surveying includes determining at least an initial depth of a plurality of spaced apart seismic sensors in a body of water. The sensors each include a substantially collocated pressure responsive sensor and motion responsive sensor. A ghost time delay is determined for each sensor based... Agent:

20120069705 - Emat acoustic signal measurement using modulated gaussian wavelet and hilbert demodulation: Casing signals generated by an EMAT in a borehole are processed using at least two orthogonal band-limited filters. The band-limited filters may include Gaussian or Cauchy Wavelet filters. By using the Hilbert transform, an envelope of the filtered signals is determined and amplitudes and arrival times of individual arrivals are... Agent: Baker Hughes Incorporated

20120069706 - Land seismic cable and method: A seismic cable for use in land applications is described. The cable includes seismic sensors for measuring seismic signals reflected from subterranean or subsea formations. The cable may be deployed in trenches dug in the survey region to provide adequate sensor coupling to ground. Sensor units may be inline with... Agent:

20120069707 - Method for monitoring a subsoil zone, particularly during stimulated fracturing operations: The invention relates to a method for monitoring a subsoil zone, wherein a plurality of receivers are arranged on a surface of the soil or near said surface, straight above a geological zone to be monitored, comprising the following steps: generating a set of reference seismic data recording seismic data... Agent: Cggveritas Services Sa

20120069708 - Apparatus and method for generating broad bandwidth acoustic energy: An acoustic transmitter includes: an acoustic diaphragm configured to transmit acoustic waves into a medium; a piezoelectric actuator assembly configured to deform in an axial direction in response to an applied electrical signal; and a highly incompressible elastic material disposed between the piezoelectric actuator and the acoustic diaphragm and configured... Agent: Baker Hughes Incorporated

20120069709 - Method and system for real-time automated change detection and classification for images: A computer based system and method for real-time display of co-registered historical and current side scan sonar imagery during a side scan sonar survey. Embodiments also include modules for detection of clutter in the current imagery, identification of features, extraction of snippets, filtering based on predetermined size and shape parameters,... Agent: The Government Of The United States, As Represented By The Secretary Of The Na

20120069710 - Method and system for real-time automated change detection and classification for images: A computer based system and method for real-time display of co-registered historical and current side scan sonar imagery during a side scan sonar survey. Embodiments also include modules for detection of clutter in the current imagery, identification of features, extraction of snippets, filtering based on predetermined size and shape parameters,... Agent: The Government Of The United States, As Represented By The Secretary Of The Navy

20120069711 - Terminal device, mobile terminal, and navigation program: A terminal device includes an orientation calculating unit that calculates the orientation of a device with respect to the target. Furthermore, the terminal device also includes a degree-of-processing determining unit that determines the degree of processing related to an attribute of a sound that indicates the target in accordance with... Agent: Fujitsu Limited

20120069712 - Ultrasonic distance measurement controller: Technologies are generally described for an integrated circuit that is designed to serve as the basis of SONAR sensors that provide high sensitivity, low noise, low cost, and electronically adjustable gain in a small package may incorporate transducer drivers and signal sensing functions. Electronically programmable gain of the circuit may... Agent: Vivid Engineering, Inc.

20120069713 - Imaging of formation structure ahead of the drill-bit: The present disclosure is related to apparatuses and methods for downhole acoustic logging. The tool may be used for generating a guided borehole wave that propagates into the formation as a body wave, reflects from an interface, and is converted back into a a guided borehole wave. Guided borehole waves... Agent: Baker Hughes Incorporated

20120069714 - Sound direction estimation apparatus and sound direction estimation method: A sound direction estimation apparatus includes a sound source model storage unit that stores likelihood of a sound source class in correspondence with a sound feature quantity, a sound signal input unit that receives a sound signal, a sound source identification unit that identifies a sound source class of the... Agent: Honda Motor Co., Ltd.

20120069715 - Ultrasound diagnostic apparatus: An ultrasound diagnostic apparatus is connectable with an ultrasound probe having a c-MUT element or a piezoelectric ultrasound transducer, and includes a DC bias output portion, a transmission signal output portion, an operation portion, a control portion, and a display portion. The control portion controls the DC bias output portion... Agent: Olympus Medical Systems Corp.

20120063262 - Self-propelled buoy for monitoring underwater objects: Various embodiments of the invention provide a buoy and system for monitoring divers and other underwater objects. In many embodiments, the buoy has capabilities to monitor a diver, obtain position information about the diver and use that information to move itself to an effective range for continued monitoring. The buoy... Agent:

20120063263 - Methods and systems for seismic signal detection: Methods and systems utilizing seismic sensors configured or designed for use in seismic signal detection. The seismic sensors output displacement signals of a displacement sensor superimposed on velocity signals generated by a moving coil of the seismic sensors.... Agent: Schlumberger Technology Corporation

20120063264 - Method for the emplacement of a sensor in soil for sensing seismic activity: A method for the emplacement of a sensor in soil for sensing seismic activity comprising in one embodiment the steps of creating a borepath in the soil, the borepath having opposing ends and a diameter, inserting a longitudinal housing and a grout pipe into the borepath extending from one of... Agent: Raytheon Company

20120063265 - Seismic acquisition and filtering: Designing a multi-dimensional Finite Impulse Response FIR digital filter to attenuate the coherent noise while preserving reflection signals on seismic data, particular in land seismics, comprises computing filter coefficients to minimise an l-norm function of differences between a response of a filter with the computed coefficients and a predetermined response... Agent: Westerngeco LLC

20120063266 - System and method for acquisition and processing of elastic wavefield seismic data: A system and method of acquiring and processing full elastic waveform data from a vertical-force source comprises providing seismic waves into the earth from the vertical-force source, sensing reflections of the seismic waves at multi-component geophones placed along the surface of the earth, and processing the reflections of the seismic... Agent: Board Of Regents Of The University Of Texas System

20120063267 - Well monitoring by means of distributed sensing means: Methods and apparatus for downhole monitoring are provided by interrogating an unmodified optic fibre (102) arranged along the path of a well bore (106) to provide a distributed acoustic sensor and sampling data gathered from a plurality of contiguous sensing portions of the fibre. The sampled data is processed to... Agent: Qinetiq Limited

20120063268 - Simultaneous ultrasonic cross-correlation and transit time measurements for multiphase flow rate analysis: Pairs of acoustic transducers positioned at different radial distances in a conduit are used to measure travel times of acoustic signals in opposite directions and inclined to the direction of a fluid flow in the borehole. These contrapropagation measurements are used to estimate fluid velocity and volumetric flow rates of... Agent: Baker Hughes Incorporated

20120063269 - Rotary type distance estimation apparatus and moving body including the same: Provided is a rotary type distance estimation apparatus. The rotary type distance estimation apparatus includes: a signal transmission unit transmitting a signal for measuring a distance to an obstacle; a signal reception unit receiving the signal reflected by the obstacle; a distance calculation unit calculating the distance to the obstacle... Agent: Microinfinity, Inc.

20120063270 - Methods and apparatus for event detection and localization using a plurality of smartphones: An event detection and localization system is provided that employs a plurality of smartphones. The detected events may comprise a gunshot, a biological threat, a chemical threat and/or a radiological threat. Each smartphone comprises a memory for storing an event detection process; and at least one hardware device to implement... Agent: Rite-solutions, Inc.

20120063271 - Seismic trigger switch solid state: A solid state seismic trigger switch for contact closure. Capable of being utilized by all seismic recording devices. Consisting of two wires, an air filled copper tube and an outer protective hull. One of the wires goes through the center of the air filled copper tube. Along this wire, near... Agent:

20120057428 - Calibration of ultrasound probes: A method of calibrating an ultrasound probe includes mounting an ultrasound probe onto a calibration system, transmitting an ultrasound test signal from an element of the probe through a test medium of the calibration system, and receiving the test signal on a matrix of hydrophones such that an element's position... Agent:

20120057429 - Tuning unique composite relatively adjusted pulse: The invention relates to acquiring seismic data in either land or marine environments, but typically marine environments where a pulse-type source is fired in a distinctive composite pulse like a distinctive rumble. In a preferred embodiment, a number of pulse-type seismic sources, sometimes called an array, are fired in a... Agent: Conocophillips Company

20120057430 - Multi-component, acoustic-wave sensor and methods: A multi-component sensor of a fluid-borne acoustic wave that senses pressure and up to three orthogonal particle motion components. The sensor is unresponsive to motion of the sensor mount. Furthermore, the sensor is substantially unresponsive to the turbulent flow of the acoustic medium past the sensor.... Agent: Ion Geophysical Corporation

20120057431 - Generating inversion ready seismic data: A technique includes receiving first seismic data acquired by one or more receivers in response to energy produced by one or more seismic sources interacting with a subsurface feature. The first seismic data is indicative of measured reflection coefficients for image points for the subsurface feature, the measured reflection coefficients... Agent: Westerngeco L. L. C.

20120057432 - Well monitoring by means of distributed sensing means: This application describes methods and apparatus for downhole monitoring in real-time. The method involves interrogating an unmodified optic fibre (102) arranged along the path of a well bore (106) to provide a distributed acoustic sensor and sampling data gathered from a plurality of sensing portions of the fibre. The sampled... Agent: Qinetiq Limited

20120051175 - Method for compensating marine geophysical sensor measurements for effects of streamer elongation: A method for determining a longitudinal position of at least one geophysical sensor on a towed marine streamer includes measuring a parameter related to tension at least one position along the streamer. A change in length of the streamer is determined using the measured parameter. The longitudinal position of the... Agent:

20120051176 - Reverse time migration back-scattering noise removal using decomposed wavefield directivity: Images of a subsurface region may be generated in conjunction with reverse time migration with reduced or no backscattering noise. Two or more wavefields may be decomposed to produce two or more corresponding decomposed wavefields. The two or more decomposed wavefields may include a source wavefield and a receiver wavefield.... Agent: Chevron U.s.a. Inc.

20120051177 - Extracting sv shear data from p-wave seismic data: A system and method of processing seismic data obtained using a surface-based receiver configured to measure vertical movement of the Earth includes retrieving seismic data from a storage device, the seismic data comprising P-P data and shear mode data. The P-P data and shear mode data were both received at... Agent: Board Of Regents Of The University Of Texas System

20120051180 - Method and apparatus for frequency domain reverse-time migration with source estimation: Provided is seismic imaging, particularly, reverse-time migration for generating a real subsurface image from modeling parameters calculated by waveform inversion, etc. A frequency-domain reverse-time migration apparatus includes: a source estimator configured to estimate sources from data measured on a plurality of receivers; and a migration unit configured to receive information... Agent: Snu R&db Foundation

20120051179 - Method and apparatus for time-domain reverse-time migration with source estimation: Provided is seismic imaging, particularly, a time-domain reverse-time migration technique for generating a real subsurface image from modeling parameters calculated through waveform inversion, etc. A reverse-time migration apparatus according to an example includes a source estimator configured to estimate sources by obtaining transmission waveforms from data measured by a plurality... Agent: Snu R&db Foundation

20120051178 - Method for detection of subsurface seismic events in vertically transversely isotropic media: A method for determining positions and origin times of seismic events occurring in the Earth's subsurface includes accepting as input to the method signals recorded from a plurality of seismic sensors deployed above a subsurface volume of interest. The recorded signals are a representation of seismic amplitude with respect to... Agent:

20120051181 - Caterpillar-style seismic data acquisition using autonomous, continuously recording seismic data recorders: The invention relates to recording seismic data with autonomous seismic data recorders in a pattern where the recorders are deployed in a compact geographical array having a low aspect ratio keeping the recorders closer to the seismic source trucks and requiring fewer total recorders. The recorders are deployed to cover... Agent: Conocophillips Company

20120051182 - Apparatus and method for imaging a subsurface using frequency-domain elastic reverse-time migration: Provided are an apparatus and method for imaging a subsurface using frequency-domain reverse-time migration in elastic medium. The subsurface imaging method represents a frequency-domain imaging condition as convolution of measured data and a partial derivative wavefield. That is, the subsurface imaging method applies a back-propagation algorithm to represent an imaging... Agent: Snu R&b Foundation

20120051183 - Range sensor optimized for wind speed: A sonar system having an acoustic wave range sensor which may be displaceable so as to reduce noise is provided. The sonar system further includes a wind sensor operable to detect wind velocity, an actuator coupled to the acoustic wave range sensor, and a processor. The actuator is coupled to... Agent: Toyota Motor Engineering & Manufacturing North America, Inc.

20120051184 - Method of acoustic ranging: An acoustic surveying method includes computing at least one of a distance and direction between first and second subterranean boreholes. An acoustic pulsed is transmitted into a subterranean formation from the first borehole and received at three or more spaced receivers deployed in the second borehole. A distance between the... Agent: Smith International, Inc.

20120051185 - Method for determining an echo distance in an acoustic pulse-echo ranging system: A method, which allows, in an acoustic pulse-echo ranging system, the direct use of a digitized raw echo signal for correlation-based echo distance estimation, where an acoustic pulse having a carrier frequency is transmitted, a digital expected echo shape is provided with a time resolution higher than the carrier frequency,... Agent: Siemens Aktiengesellschaft

20120051186 - Valve condition monitoring: A method for monitoring the operation of underwater-located equipment is provided. The method comprises: providing a sensor, the sensor comprising at least one of an acoustic sensor and an accelerometer, locating the sensor proximate the equipment to enable detection by the sensor of acoustic and/or acceleration components produced by the... Agent:

20120051187 - Sonic communication system and method: A method, apparatus and computer program product is provided for wirelessly transmitting and receiving data through sonic communication. A method and system is provided for devices to exchange data over the air using a sonic carrier signal. The transmit device has at least one sonic transducer that transmits a sonic... Agent:

20120051188 - Submersible electro-dynamic acoustic projector: An electro-dynamic acoustic projector provides a rigid enclosure having an open end. A pressure compensated chamber extends into the rigid enclosure from the open end. A vibratile piston is located in the open end of the rigid enclosure and closed the pressure compensated chamber. The vibratile piston has an axis... Agent:

20120051189 - Use of autotransformer-like antennas for downhole applications: An apparatus for estimating a property of an earth formation penetrated by a borehole, apparatus including: a carrier configured to be conveyed through the borehole; a transducer disposed at the carrier and configured to transmit and/or receive electromagnetic energy into and/or from the earth formation to estimate the property; wherein... Agent: Baker Hughes Incorporated