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| Number | Title | Issue Date |
| 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 |
| 8098542 | Combined electromagnetic and seismic acquisition system and method A method for marine geophysical surveying according to one aspect of the invention includes towing at least one geophysical sensor streamer in a body of water. The streamer includes a plurality of spaced apart electromagnetic field receivers disposed at spaced apart... | 01/17/2012 |
| 8064286 | Seismic streamer array 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... | 11/22/2011 |
| 8000167 | Streamer cable with enhanced properties The present invention relates to streamer cables. One embodiment of the present invention relates to a method for preparing a streamer cable. The method may comprise retrofitting the streamer cable with a solid void-filler material, where the streamer cable was conf... | 08/16/2011 |
| 7969817 | Ocean bottom seismic station Methods and apparatus for cable termination and sensor integration at a sensor station within an ocean bottom seismic (OBS) cable array are disclosed. The sensor stations include a housing for various sensor components. Additionally, the sensor stations can accommod... | 06/28/2011 |
| 7961549 | Enhancing the acquisition and processing of low frequencies for sub-salt imaging A method and apparatus for acquiring seismic signals from beneath a salt region in the earth. In one embodiment, the method includes tuning an air gun array to a first bubble oscillation; towing the air gun array in the water at a depth of at least 10 meters, in whi... | 06/14/2011 |
| 7933164 | Using towed seismic surveys that do not have coinciding streamer positions in the time lapse analysis of a producing field A technique includes performing at least one intervening towed seismic survey after a prior towed seismic survey and before a future towed seismic survey. The prior towed seismic survey has associated first streamer positions, and the future towed seismic survey has... | 04/26/2011 |
| 7933165 | Connector for seismic cable A method and apparatus for a seismic cable is described. The apparatus includes a plurality of cable segments comprising at least a first cable segment and a second cable segment coupled by a connector. The connector comprises a cylindrical body having a first diame... | 04/26/2011 |
| 7835222 | Anti-biofouling seismic streamer casing and method of manufacture An anti-biofouling seismic streamer casing (100,100′) is provided that is formed by a flexible tubing (110) coated with a layer of a two-part heat cured silicone elastomer (120). The seismic streamer casing (100, 100′) is formed by a ... | 11/16/2010 |
| 7733740 | Sensor mount for marine seismic streamer A seismic streamer includes a jacket covering an exterior of the streamer. At least one strength member extends along the length of and disposed inside the jacket. At least one seismic sensor is mounted in a housing affixed to the at least one strength member. A voi... | 06/08/2010 |
| 7710819 | Streamer cable with enhanced properties The present invention relates to streamer cables. One embodiment of the present invention relates to a method for preparing a streamer cable. The method may comprise retrofitting the streamer cable with a solid void-filler material, where the streamer cable was conf... | 05/04/2010 |
| 7693005 | Sensor streamer having two-layer jacket A seismic streamer includes a jacket covering an exterior of the streamer, at least one strength member extending along the length of and disposed inside the jacket, at least one seismic sensor mounted in a sensor spacer affixed to the at least one strength member, ... | 04/06/2010 |
| 7660193 | Integrated seismic sensor cable A seismic cable (110) and a method for producing a seismic cable are disclosed. The seismic cable (110) comprises a sensor module (130); at least one lead (210) to or from the sensor module (130); a stress member (225) exten... | 02/09/2010 |
| 7616522 | Seismic streamer with irregularly spaced hydrophones A seismic streamer and a method for positioning a group of hydrophones in a seismic streamer. The hydrophones in a group are spaced irregularly along the length of the streamer to reduce the influence of bulge-wave noise and flow noise on the hydrophone group respon... | 11/10/2009 |
| 7602667 | Breakaway deployment cable for underwater seismic recording system A seismic cable system for joining the free ends of a seismic cable utilizing a connector which will separate when subject to a predetermined load. The system includes a first cable connector section that is rotatingly mounted directly on a first free cable end and ... | 10/13/2009 |
| 7573781 | Streamer cable with enhanced properties The present invention relates to streamer cables. One embodiment of the present invention relates to a method for preparing a streamer cable. The method may comprise retrofitting the streamer cable with a solid void-filler material, where the streamer cable was conf... | 08/11/2009 |
| 7548486 | System for reducing towing noise in marine seismic survey streamers A seismic streamer includes a jacket covering an exterior of the streamer. At least one strength member extends along the length of the jacket. The strength member is disposed inside the jacket. At least one seismic sensor is disposed in an interior of the jacket. A... | 06/16/2009 |
| 7545703 | Marine seismic streamer with varying spacer distances for reducing towing noise A seismic streamer includes a jacket covering an exterior of the streamer. At least one strength member extends along the length of the jacket. The strength member is disposed inside the jacket. At least one seismic sensor is disposed in an interior of the jacket. A... | 06/09/2009 |
| 7518948 | Marine seismic streamer having soluble encapsulant surrounding seismic sensors therein A seismic streamer includes a jacket covering an exterior of the streamer. At least one strength member extends along the length of the streamer and is disposed inside the jacket. At least one seismic sensor is disposed in a sensor spacer affixed to the at least one... | 04/14/2009 |
| 7466624 | Armored seabed laid seismic cable and method and apparatus for manufacturing same A method for wrapping continuous strands of steel wire about a seismic cable including interconnected sensor sections and conductor sections where a cross sectional diameter of the sensor section is at least four times that of the conductor section. Two layers of ar... | 12/16/2008 |
| 7460434 | Marine seismic streamer having soluble encapsulant surrounding seismic sensors therein A seismic streamer includes a jacket covering an exterior of the streamer. At least one strength member extends along the length of the streamer and is disposed inside the jacket. At least one seismic sensor is disposed in a sensor spacer affixed to the at least one... | 12/02/2008 |
| 7453763 | Geophysical data acquisition system The invention includes a geographical sensor apparatus for use under water in the sea, including a plurality of seismic sensors (1) for sensing seismic waves associated with underground formations, and a plurality of EM-sensors constituted preferably by elect... | 11/18/2008 |
| 7426439 | Method and apparatus for marine seismic data acquisition The present invention provides a method and apparatus for seismic data acquisition. One embodiment of the method includes accessing data acquired by at least two particle motion sensors. The data includes a seismic signal and a noise signal and the at least two part... | 09/16/2008 |
| 7411863 | Marine seismic data acquisition systems and methods Systems and methods for acquiring marine seismic data are described. One system comprises a marine seismic spread adapted to survey a sub-sea geologic deposit, the spread comprising one or more seismic instruments attached to or within an instrument support bounded ... | 08/12/2008 |
| 7382689 | Flexible hydrophone A hydrophone includes a body formed of a flexible, plastic material. The body includes a plurality of channels and each channel may have one or more wells. The wells are adapted to receive an active element which includes mounting hardware. The mounting hardware inc... | 06/03/2008 |
| 7379385 | Processing of seismic data acquired using over/under streamers and/or over/under sources Implementations of various techniques for processing seismic data acquired by three or more over/under streamers. In one implementation, the seismic data may be processed by grouping the seismic data into one or more sets of seismic data based on all possible pairs ... | 05/27/2008 |
| 7366055 | Ocean 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 |
| 7333391 | Universal seismic cable connector A hermaphroditic connector for a multiple conduit cable assembly comprises a cylindrical protective collar surrounding an inner cylindrical core. The collar is axially secured to the inner core but partially rotatable about the core. The distal end of the collar is ... | 02/19/2008 |
| 7324406 | Sensor arrangement for seismic waves A sensor arrangement is provided for use in the seismic investigation of geological formations below the seabed. A plurality of sensor nodes (20) are provided and are positioned gfor deployment on the seabed to collect pressure waves and shear waves from the ... | 01/29/2008 |
| 7319636 | Calibration 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 |
| 7310287 | Method and apparatus for seismic data acquisition 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 teth... | 12/18/2007 |
| 7293520 | Control 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 |
| 7286938 | Method of and an apparatus for processing seismic data A method is provided of processing multi-component seismic data acquired by emitting multi-component seismic energy at a source location and acquiring seismic data at a multi-component seismic receiver located at a greater depth than the source location. The seismic... | 10/23/2007 |
| 7270214 | Method and apparatus for reducing and extracting wing-tip vortex energy The present invention provides an apparatus and a method for reducing wing-tip vortex energy during seismic exploration. The apparatus includes a vortex concentrator of deployed proximate a tip of a hydrofoil and a vortex reducing device deployed proximate the vorte... | 09/18/2007 |
| 7269099 | Air gun A seismic air gun includes an operating chamber, a firing chamber, a port, and a longitudinally disposed cavity sized and shaped to accept a plurality of wires. A moveable shuttle includes a shuttle flange within the operating chamber at one end and a firing shuttle... | 09/11/2007 |
| 7260024 | Housing 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 |
| 7259331 | Lightweight armor wires for electrical cables Disclosed are electric cables with improved armor wires used with wellbore devices to analyze geologic formations adjacent a wellbore. The cables include at least one insulated conductor, and one or more armor wires surrounding the insulated conductor. The armor wir... | 08/21/2007 |
| 7239577 | Apparatus and methods for multicomponent marine geophysical data gathering In one embodiment the invention comprises a particle velocity sensor that includes a housing with a geophone mounted in the housing. A fluid that substantially surrounds the geophone is included within the housing. The particle velocity sensor has an acoustic impeda... | 07/03/2007 |
| 7230878 | Methods and apparatus for seabed seismic data acquisition Methods and apparatus for acquiring seismic data using a seabed seismic data cable positioned on a seabed are described, one method including deploying a seabed seismic cable, the cable comprising two or more active sections separated by at least one jumper section;... | 06/12/2007 |
