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Class 367/16 - Transducer position control


Subclass of Class 367 - Communications, electrical: acoustic wave systems and devices
Definition: Subject matter wherein the relative depth or location of
No. of patents: 133
Last issue date: 11/01/2011


1        
NumberTitleIssue Date
8050139System 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
8014228Marine seismic sources and methods of use
Marine seismic sources and methods of use are described, one source comprising a first set of source arrays and a second set of source arrays, each source array of the first set alternates in cross-line position with source arrays of the second set, each source memb...
09/06/2011
8004930Methods and systems for determining coordinates of an underwater seismic component in a reference frame
A method comprising determining coordinates of a first point rigidly attached to a rigid body floating on the sea surface in a desired coordinate reference frame; measuring orientation parameters of the rigid floating body to determine 3D offset in the coordinate re...
08/23/2011
7965583Method and apparatus for guiding seismic acquisition equipment
The invention relates to a method for acquiring seismic data at a plurality of positions spread out over a zone on the seabed which includes transmitting acoustic waves in the water layer above the zone by a plurality of sources, —for each of the acquisition posit...
06/21/2011
7957220Active steering for marine seismic sources
A seismic survey system having a source array (11) coupled to a deflector device (15) that controls the position of the source array. A positioning system unit (16) is mounted on the source array to provide a signal to a controller, informing th...
06/07/2011
7933163Method and system for controlling the position of marine seismic streamers
A method and control device for controlling the position of a marine seismic streamer spread and the ability for controlling individual marine seismic streamers both in shape and position relative to other marine seismic streamers and thereby counter effects from cr...
04/26/2011
7881152Active steering for marine sources
A seismic survey system includes a winch having a winch cable coupleable to a source array towable between two deflected lead-ins, a positioning system for determining a current position of the source array and a controller for adjusting the winch to modify the curr...
02/01/2011
7804738Active steering systems and methods for marine seismic sources
Systems and methods for automatic steering of marine seismic sources are described. One system comprises a marine seismic spread comprising a towing vessel and a seismic source, the seismic source comprising one or more source arrays each having a center of source a...
09/28/2010
7800976Single foil lateral force and depth control device for marine seismic sensor array
A lateral force and depth control device for a marine streamer includes a housing configured to be coupled within the streamer. A control surface is mounted to the housing such that a rotary orientation and an angle of attack of the control surface with respect to t...
09/21/2010
7778109Current prediction in seismic surveys
A method for use in seismic surveying includes determining the shape of a seismic cable during a seismic survey; determining the tension on the seismic cable at a plurality of points along the seismic cable; and predicting a current that will impact the seismic cabl...
08/17/2010
7755970Methods for controlling marine seismic equipment orientation during acquisition of marine seismic data
Methods are described for actively steering a towed marine seismic component using one or more actively controllable control members; reducing the actively steering of the control members during duration of a time window of recording seismic reflections from a sub-s...
07/13/2010
7755971Sensing system
The present invention relates to a sensing system, in particular to sensing system for sensing undersea seismic events. A vibration sensor is provided for sensing seismic vibrations on the sea bed is provided. The vibration sensor is electrically coupled to a transm...
07/13/2010
7738317Apparatus and methods for controlling position of marine seismic sources
Apparatus and methods are described for remotely controlling position of marine seismic equipment. One apparatus comprises a source connected to a tow member; and an adjustment mechanism connected to the source and the tow member, the adjustment mechanism adapted to...
06/15/2010
7660190Deflector devices
A deflector device (22) for use with a tow line between a seismic survey vessel and a tow, in particular a seismic streamer or streamer array, in the water behind the vessel comprises a vertically oriented wing-shaped body (28) shaped to produce in use...
02/09/2010
7660191Methods and apparatus for acquisition of marine seismic data
Methods and apparatus for acquiring marine seismic data are described. One method comprises selecting tow depth of one or more marine seismic streamers based at least in part on lack of or presence of currents at different depths, and allowing the current to contrib...
02/09/2010
7623411Stabilized streamer connection system
A connection system for connecting external devices to a streamer. The connection system comprises three outer collars maintained collinearly aligned by a stabilizing member, such as a lightweight, rigid tube, attached to each outer collar. The tube extends parallel...
11/24/2009
7577060Systems and methods for steering seismic arrays
Marine seismic survey systems and methods are presented. One system comprises a source array, a tow vessel, one or more source tow members, one or more deflecting members operatively connected to the source array; one or more streamers connected to the tow vessel by...
08/18/2009
7554880Marine surveys
A method generates at least one route traversing a plurality of predetermined survey paths in a marine survey. The method includes generating a plurality of routes traversing a subset of the predetermined survey paths. The routes satisfy survey constraints such as r...
06/30/2009
7499373Apparatus and methods for seismic streamer positioning
Apparatus, systems and methods for connecting two seismic streamers are disclosed that enable two streamers to be towed in a desired arrangement. One apparatus comprises an elongate member having a first portion and a second portion, and an orientation member connec...
03/03/2009
7457193Seismic source and source array having depth-control and steering capability
A marine seismic energy source includes a seismic tow cable configured to be towed by a vessel from one end and at least one seismic source coupled proximate another end of the tow cable. The at least one seismic source is associated with a depth controller. The dep...
11/25/2008
7450467Apparatus and methods for seismic streamer positioning
Systems and methods for positioning seismic streamers are disclosed that enable two or more streamers to be positioned in over/under configuration. One system comprises first and second pluralities of remotely controllable birds mounted on or inline in first and sec...
11/11/2008
7443763Full wave seismic recording system
The present disclosure generally relates to systems and methods for acquiring seismic data. In one exemplary embodiment, a method for acquiring seismic data is described in which recorder instruments are deployed to the seafloor and utilized for recording pressure w...
10/28/2008
7433264Methods and systems for determination of vertical correction of observed reflection seismic signals
Methods and systems for determining position of seismic sources and receivers are disclosed. Signals received by a first antenna are processed to determine its 3D coordinate position. Signals received by the first antenna and a second antenna are combined and proces...
10/07/2008
7400552Methods and systems for efficiently acquiring towed streamer seismic surveys
Methods and systems for efficiently acquiring towed streamer marine seismic data are described. One method and system comprises positioning a plurality of source-only tow vessels and one or more source-streamer tow vessels to acquire a wide- and/or full-azimuth seis...
07/15/2008
7391673Method of wide azimuth seismic acquisition
According to a preferred aspect of the instant invention, there is provided a system and method for acquiring seismic data in a marine environment, wherein at least two source vessels are used in conjunction with a recording vessel which tows a plurality of hydropho...
06/24/2008
7366055Ocean bottom seismic sensing system
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 w...
04/29/2008
7359282Methods and apparatus of source control for borehole seismic
A method and apparatus for controlling seismic sources. The method and apparatus enable firing of a seismic sources at either a precise time or a precise position of the seismic source. Controlling the firing of the seismic source facilitates more accurate seismic d...
04/15/2008
7339852Seismic acquisition system
A seismic acquisition system comprising a remote-controlled buoy for conducting seismic acquisition operations. The buoy comprises an operating system for operating a seismic wave production device on the buoy, a placement system, a communications system, and dynami...
03/04/2008
7336561System for attenuation of water bottom multiples in seismic data recorded by pressure sensors and particle motion sensors
An up-going wavefield and a down-going wavefield are calculated at a sensor position from a pressure sensor signal and a particle motion sensor signal. Then, an up-going wavefield is calculated at a water bottom position substantially without water bottom multiples ...
02/26/2008
7319636Calibration of pressure gradient recordings
A method for computing a pressure signal gradient. The method includes recording a plurality of pressure signals at least one of a first receiver and a second receiver. The first receiver and the second receiver are disposed within a cluster. The method further incl...
01/15/2008
7313495Method of processing marine magnetic gradient data and exploration methods using that data
A method of processing marine magnetic data is disclosed which comprises towing first and second magnetometers M1 and M2 behind a ship (10). Raw magnetic gradient data is obtained from the sensors and the trend of the gradient of the shi...
12/25/2007
7293520Control system for positioning of a marine seismic streamers
A method of controlling a streamer positioning device (18) configured to be attached to a marine seismic streamer (12) and towed by seismic survey vessel (10) and having a wing and a wing motor for changing the orientation of the wing. The metho...
11/13/2007
7277359Navigation processor, a system comprising such a navigation processor and a method of controlling an underwater system by such a navigation processor
A navigation processor is interfaced to an acoustic processor and to DGPS surface positioning equipment on a vessel. The navigation processor receives (a) position data from the DGPS surface positioning equipment, (b) data from a gyrocompass on an underwater system,...
10/02/2007
7260024Housing for a seismic sensing element and a seismic sensor
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...
08/21/2007
7222579Control system for positioning of marine seismic streamers
A method of controlling a streamer positioning device (18) configured to be attached to a marine seismic streamer (12) and towed by seismic survey vessel (10) and having a wing and a wing motor for changing the orientation of the wing. The metho...
05/29/2007
7224641Sensor arrangement and method for the installation and moving of this
Arrangement for use for seismic surveys of geological formations in a seabed, where a plurality of such arrangements, which are provided with sensor units 26, are placed on the seabed for collecting pressure waves and shear waves reflected from the geological...
05/29/2007
7221620Apparatus for seismic measurements
An apparatus for three-dimensional single-channel seismic measurements, wherein at least one seismic source and hydrophone devices are towed behind a vessel, and a pair of submerged deflectors are used and which, as the vessel moves, seek to move in a direction tran...
05/22/2007
7221619Fiber optic strain gauge and cable strain monitoring system for marine seismic acquisition systems
A method for operating a marine seismic survey system includes deploying from a seismic vessel at least two lead-in cables each functionally coupled at one end thereof proximate a respective paravane. The lead-in cables have at least one spreader cable functionally ...
05/22/2007
7210556Method and apparatus for installing a sensor array
An apparatus and method is provided for transporting, installing, retrieving, and replacing a sensor array of individual sensor pods at a geographically remote location, such as on the sea floor. The apparatus consists of a remotely operated vehicle (ROV), a carouse...
05/01/2007
7206254Underwater cable arrangements and devices
The present invention provides an underwater cable arrangement includes an underwater cable having one or more external devices mounted on the cable. In one form of the invention, the external devices are powered primarily or entirely by inductive coupling between a...
04/17/2007
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