Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 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 |
| 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 |
| 7852708 | Sensing and actuating in marine deployed cable and streamer applications Methods and related systems are described for use with hydraulic fracturing and other oilfield applications. A tool body is positioned in a wellbore at a location near a subterranean rock formation being fractured. The tool body contains a plurality of deployable co... | 12/14/2010 |
| 7835221 | Optical methods and systems in marine seismic surveying Methods and systems for determining position of marine seismic spread components are disclosed. One method comprises exposing an underwater marine seismic spread component to an optical device, and calculating geometry of the spread component using at least some of ... | 11/16/2010 |
| 7813218 | Performing quality control with respect to positioning of survey hardware To perform quality control with respect to positioning of survey hardware, survey navigation data is acquired regarding components of the survey hardware used to perform a survey operation with respect to a subterranean structure. Error statistics according to the s... | 10/12/2010 |
| 7660192 | Seismic streamer receiver selection systems and methods Systems and methods for determining inline skew of one or more seismic streamers are disclosed. One system embodiment includes a seismic streamer including a plurality of receivers, a skew detector adapted to detect inline skew of the streamer, and a receiver select... | 02/09/2010 |
| 7656746 | Rational motion compensated seabed seismic sensors and methods of use in seabed seismic data acquisition Apparatus and methods for acquiring seismic data using a seabed seismic data cable positioned on a seabed are described, including correcting for the effect of one or more sensor non-linear motions, which improves accuracy of seismic data. One or multiple non-linear... | 02/02/2010 |
| 7599249 | Cable motion detection The present invention provides for cable motion detection. In one aspect of the instant invention, a method is provided for cable motion detection using orientation sensor. The method includes determining at least one initial inclination of at least one orientation ... | 10/06/2009 |
| 7539079 | System and method for determining positions of towed marine source-array elements A system comprises a plurality of seismic transmitters, at least one seismic source array, and a processor. Each seismic source array comprises a plurality of seismic source-array elements, mounted within the seismic source array; and a plurality of near-field senso... | 05/26/2009 |
| 7480204 | Seismic data processing Implementations of various technologies for processing seismic data. In one implementation, the seismic data may be processed by creating a fictitious source-receiver line connecting a source with a receiver location of interest, projecting one or more receiver loca... | 01/20/2009 |
| 7443763 | Full 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 |
| 7433264 | Methods 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 |
| 7417924 | Apparatus, systems and methods for determining position of marine seismic acoustic receivers Apparatus, systems and methods for calculating position of marine seismic acoustic receivers, and for estimating sound velocity profile of a fluid, are disclosed. One position calculation system includes a vessel, two or more vessel hull-mounted transmitters, a plur... | 08/26/2008 |
| 7391674 | Methods and systems for determining orientation of seismic cable apparatus Methods and systems for estimating one or more orientation parameters of a seismic apparatus are described. One method comprises initiating an acoustic signal from an acoustic transmitter in a marine seismic spread comprising a streamer, the streamer having at least... | 06/24/2008 |
| 7376045 | System and method for determining positions of towed marine seismic streamers A system comprises a plurality of acoustic transmitters, mounted inside the streamers, adapted to transmit broadband signals having low cross-correlation between the signals of different transmitters; a plurality of acoustic receivers, mounted inside the streamers, ... | 05/20/2008 |
| 7315486 | Library of velocity dependent extended spread-spectrum codes A method and apparatus is provided for determining a propagation time delay. The apparatus includes at least one source adapted to generate a plurality of positioning signals, at least one receiver deployed along a seismic sensing cable, wherein the receiver is adap... | 01/01/2008 |
| 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 |
| 7249007 | Weather and climate variable prediction for management of weather and climate risk A method for simulating the statistical behavior of atmospheric, meteorological, or other geophysical time series having the following steps: (a) assembling an ensemble of observed data; (b) removing any evident cycles; (c) calculating the eigensystem and expansion ... | 07/24/2007 |
| 7222579 | Control 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 |
| 7215788 | Digital loudspeaker A digital pulse-width-modulation (PWM) generator comprising: an n bit digital magnitude comparator having first and second n bit inputs and an output indicative of the relative values of the signals applied at the first and second inputs; a first n bit digital up/do... | 05/08/2007 |
| 7206254 | Underwater 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 |
| 7203130 | Methods for deriving shape of seismic data acquisition cables and streamers employing a force model Methods and systems for determining position of one or more portions of a seismic streamer, which portions may be seismic receivers, are disclosed. One method includes measuring one or more characteristics of one or more steering devices positioned at known distance... | 04/10/2007 |
| 7167412 | Apparatus for steering a marine seismic streamer via controlled bending A marine seismic streamer steering device comprises at least two hinged sections pivotally coupled to each other and connected between two adjacent sections of the seismic streamer, and a bend control unit that controls bending of the hinged sections relative to the... | 01/23/2007 |
| 7162967 | Control 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... | 01/16/2007 |
| 7142154 | Time and frequency synchronizations of equipment at different locations Method and apparatus for providing accurately synchronized timing signals at mutually distant locations employs a GPS or similar receiver at each location. These receivers are interconnected by a communications network, and exchange data over the network to agree a ... | 11/28/2006 |
| 7120087 | Electronics-carrying module An electronic-carrying module (640), for example for use with a seismic data acquisition cable (400), is disclosed. The preferred electronic-carrying module (640) includes, first, an electronics carrier (106) having access means (107 | 10/10/2006 |
| 7104728 | Method for deploying seafloor equipment A method for deploying and retrieving seafloor equipment modules is disclosed. A conveyor has a fixed end and a free end. The conveyor is deployed into a body of water until the free end reaches, or is proximate to, the seafloor. The conveyor is dragged through the ... | 09/12/2006 |
| 7092315 | Device for laterally steering streamer cables A device and a method for laterally steering a streamer cable towed underwater behind a seismic survey vessel. The device includes a cable-steering assembly rotatably attached to a streamer cable. The assembly includes a body to which one or more wings are mounted. ... | 08/15/2006 |
| 7080607 | Seismic data acquisiton equipment control system A method of controlling a streamer positioning device configured to be attached to a marine seismic streamer and towed by a seismic survey vessel and having a wing and a wing motor for changing the orientation of the wing. The method includes the steps of: obtaining... | 07/25/2006 |
| 7066687 | Marine seismic surveying A method of performing a seismic survey of a hydrocarbon reservoir in the earth formations beneath a body of water includes deploying a seismic cable from a drum carried by a remotely operated vehicle on the seabed. The cable is deployed into a lined trench, which i... | 06/27/2006 |
| 7047898 | System for controlling streamers System for controlling cables and streamers in a seismic tow arrangement comprising at least one deflector (13) connected to one side of a tow vessel (10) via at least one wire (12), leading or the like, wherein the deflector is located in a pos... | 05/23/2006 |
| 7050355 | Determining the orientation of a seismic receiver, a seismic receiver, and a method or seismic surveying The invention provides a method of determining the orientation of a seismic receiver (4, 6) from seismic data acquired at the receiver (4, 6). The determined orientation can be taken into account in subsequent analysis of the seismic data. This avoids ... | 05/23/2006 |
| 7035757 | Three-dimensional position calibration of audio sensors and actuators on a distributed computing platform A first computing device transmitting a wireless signal to a second and third computing devices, the signal requesting an actuator of the second computing device generate an acoustic signal to be received by a sensor of the third computing device, wherein the actuat... | 04/25/2006 |
| 6985403 | Control device for controlling the position of a marine seismic streamer A control device (1) for controlling the position of a marine streamer comprising; an annular aerofoil (2), a mount (3) for mounting the annular aerofoil onto and around the streamer; and control means (4a, 4b) for co... | 01/10/2006 |
| 6932185 | Acquisition method and device for seismic exploration of a geologic formation by permanent receivers set on the sea bottom A method and device for seismic exploration of a subsea geologic formation by pickups set on the sea bottom and intermittently connectable to active data acquisition stations (11) brought nearby. Permanent passive reception stations (1) comprising a he... | 08/23/2005 |
| 6912466 | Method for imaging seismic structures A process for displaying seismic data that compares the data to a model function, typically a trigonometric sine wave. Sample points from the model function are compared to sample points of the seismic data at each graphic point being displayed. Seismic sample data ... | 06/28/2005 |
| 6846133 | Marine seismic surveying A method of performing a seismic survey of earth formations beneath a body of water is disclosed. The method includes: (a) deploying a seismic cable having a plurality of seismic sensors distributed therealong in close proxmity to elongate locating means provided at... | 01/25/2005 |
| 6839302 | Acoustic emitters for use in marine seismic surveying An acoustic emitter for coupling in series in a marine seismic streamer is provided with an annular housing and an annular piezoelectric emitting element positioned coaxially within the housing. This form of construction permits the electrical or electro-optical tra... | 01/04/2005 |
| 6747913 | Method and system for deghosting In one embodiment the invention comprises a method for receiving an acoustic wavefield beneath the surface of the water in which at least a portion of an acoustic wavefield is received at a first position, at least a portion of an acoustic wavefield is received at a... | 06/08/2004 |
| 6671223 | Control devices for controlling the position of a marine seismic streamer A control device or "bird" for controlling the position of a marine seismic streamer is provided with an elongate, partly flexible body which is designed to be electrically and mechanically connected in series with a streamer. In its preferred form, the b... | 12/30/2003 |
