SERCEL Patent applications |
Patent application number | Title | Published |
20160096595 | CUTTER DEVICE FOR MARINE SURVEY SYSTEM AND RELATED METHOD - Device, system and method for protecting towed marine survey equipment from line entanglement are provided. A cutter device has a mounting mechanism configured to fixedly attach at a predetermined position along a cable used for towing, and one or more cutting structures. The cutting structures are attached to and extend away from the mounting mechanism, being configured to cut lines that get caught by the cutting structures or slide along the cable to the predetermined position. | 04-07-2016 |
20150198728 | QUALITY CONTROL FOR BROADBAND SWEEPS - A method for determining a quality control quantity corresponding to energy provided by a seismic source and related devices are provided. The method includes determining an envelope of a pilot signal associated with the seismic source; measuring a source signal of the energy provided by the seismic source; normalizing the pilot signal and the source signal using the determined envelope; and determining, in a processor, the quality control quantity using the normalized pilot signal and the normalized source signal. A control mechanism configured to implement the method includes a storage device holding data of a pilot signal associated with the seismic source; and a processor connected to the storage device and configured to carry out the method steps. A computer-readable medium having instructions to carry out steps of the method is also provided. | 07-16-2015 |
20140293749 | METHOD AND DEVICE FOR AUTOMATICALLY DETECTING MARINE ANIMALS - A method is provided for automatically detecting marine animals, carried out by a detection device. The method includes obtaining acoustic signal measurements collected by at least one acoustic sensor in a underwater environment; and at least one of a first branch for detecting frequency modulated sounds and a second branch for detecting impulsive sounds; each branch comprising a step of detecting sounds by: implementing in parallel several detection channels each having a different and fixed value for at least one degree of freedom; selecting the detection channel having a maximum signal to noise ratio; and comparing the signal to noise ratio of the selected detection channel to a determined threshold. The method further includes taking an alarm decision, indicating the presence of at least one marine animal, as a function of an output of the first branch and/or an output of the second branch. | 10-02-2014 |
20140192617 | SYSTEM FOR ACQUIRING SEISMIC DATA IN A MARINE ENVIRONMENT, USING SEISMIC STREAMERS COUPLED TO MEANS FOR DETECTING AND/OR LOCATING MARINE MAMMALS - Discloses herein is a system of acquiring seismic date in a marine environment, which includes: seismic streamers towed by a vessel; and means for detecting and/or locating marine mammals, characterised in that said marine mammal detection and/or location means are secured to said seismic streamers. | 07-10-2014 |
20140153170 | Module for Processing Geophysical Data Comprising Two Connectors Each Forming one Half-Shell and Being Arranged to Form a Shell in Which an Electronic Board is Placed, Connector and Sub-Assembly Corresponding - A module is provided for processing geophysical data coming from at least one geophysical sensor. The module includes: an electronic board configured to enable the processing of geophysical data captured by the at least one geophysical sensor; and two cable sections each including, at one extremity, a connector designed to be connected to said electronic board. Each connector forms one half-shell and is arranged so as to cooperate with one other half-shell in such a way as to form a shell in which the electronic board is placed. | 06-05-2014 |
20140104981 | SEISMIC CABLE FOR SEISMIC PROSPECTION TOLERANT TO FAILURE ON POWER SUPPLYING AND/OR DATA TRANSMISSION LINES - A seismic cable including sensors, data transmission lines extending the length of the seismic cable for conveying data signals issued from the sensors. Controllers distributed along the seismic cable operate as an interface between the sensors and the data transmission lines. Power supplying lines supply power to the controllers and the sensors. X power supplying lines are alternately connected to one out of X successive controllers. Each controller is adapted for applying on a power supplying line detected as defective the electrical tension provided by another power supplying line. Y data transmission lines are alternately connected to one out of Y successive controllers. Each controller is adapted to redirect towards at least one adjacent controller the data associated with a data transmission line which is determined to be defective. | 04-17-2014 |
20140086687 | UNDERWATER CABLE DEPLOYMENT SYSTEM AND METHOD - An underwater cable deployment system for deploying an ocean bottom cable on the seabed including a cage having a lower frame and an upper frame, which lower frame is adapted to receive the ocean bottom cable and the upper frame is connected to an umbilical cable mounted on a vessel, the upper frame being removably attached to the lower frame, guiding and tensioning means for deploying the ocean bottom cable on the seabed, the lower frame further including a recording unit which is connected to the ocean bottom cable and is adapted to record data detected by at least one sensor unit of the ocean bottom cable and an electrical power unit adapted to provide power to the recording unit and to the ocean bottom cable. | 03-27-2014 |
20140029377 | STREAMER FOR SEISMIC PROSPECTION COMPRISING TILT COMPENSATION OF DIRECTIONAL SENSORS - A streamer for seismic prospection comprising directional sensors ( | 01-30-2014 |
20130319076 | ANTI-STICTION METHOD IN AN INERTIAL MEMS, CORRESPONDING COMPUTER PROGRAM PRODUCT, STORAGE MEANS AND DEVICE - An anti-stiction method is proposed in an inertial micro-electro-mechanical device. The device includes: a mobile mass, suspended to an armature via a spring, and having at least one mobile electrode; and at least one fixed electrode rigidly attached to the armature, each fixed electrode cooperating with one of the at least one mobile electrode to form a pair of electrodes. The anti-stiction method carries out a step of detecting, for at least one stuck pair of electrodes, a stiction associated to a stiction force and a step of applying, during a predetermined time period, a predetermined voltage between the electrodes of at least one of the pair or pairs of electrodes, so as to create an electrostatic force which generates a displacement of the mobile mass according to the direction of the stiction force. | 12-05-2013 |
20130210262 | CONNECTOR, IN PARTICULAR FOR UNDERWATER GEOPHYSICAL OPERATIONS - A connector is provided, which is configured for being connected to a similar connector. The connector has a global cylindrical shape around a longitudinal axis and includes a connection zone having comprising at least one electrical contact. A housing extends at least partly around the connection zone and has at least two projecting members. A cylindrical locking nut surrounds the housing and is at least partly movable relative to the housing. The housing and the locking nut are configured for respectively cooperating with corresponding locking nut and housing of the similar connector. | 08-15-2013 |
20130163384 | Stress-Relief Device for Geophysical Equipment or Node - A stress-relief device is provided, which is configured for being mounted on a geophysical equipment or node connected to at least two cables. The device includes a case configured for surrounding the geophysical equipment or node and for making at least an opening for enabling a connection between each of the at least two cables and the geophysical equipment or node. The device also includes a housing for housing a portion of each of the two cables, the housing being configured for substantially preventing any movement of said portions of the two cables. | 06-27-2013 |
20130155809 | Method and Device for Managing the Acoustic Performances of a Network of Acoustic Nodes Arranged Along Towed Acoustic Linear Antennas - A method and apparatus are provided for managing the acoustic performances of a network of acoustic nodes arranged along towed acoustic linear antennas. The network of acoustic nodes is adapted to determine inter-node distances allowing to locate the acoustic linear antennas. The method includes: obtaining a determined layout of the network of acoustic nodes; obtaining at least one marine environment property relating to an area of performance of a survey with the network of acoustic nodes; and quantifying the acoustic performances of the network of acoustic nodes, using a sound propagation model, the at least one marine environment property and the determined layout. | 06-20-2013 |
20130155808 | Method and Device for Estimating an Inter-node Distance Between Nodes Arranged Along Towed Acoustic Linear Antennas - A method and apparatus are provided for estimating an inter-node distance between a sender node and a receiver node belonging to a network comprising a plurality of nodes arranged along towed acoustic linear antennas. An acoustic signal is transmitted from the sender node to the receiver node through an underwater acoustic channel. The method includes estimating the inter-node distance as a function of an estimate of a sound speed profile of the underwater acoustic channel, the sound speed profile depending on depth. | 06-20-2013 |
20130140106 | TRUCK-MOUNTED VIBRATORY SOURCE AND METHOD - Method and land-based system for generating seismic signals. The system includes a vehicle configured to move to a desired location above ground, the vehicle having a first end and a second end, opposite to the first end; a vibratory source configured to generate seismic waves into the ground; a lifting system connecting the first end of the vehicle to the vibratory source and configured to lift or lower the vibratory source relative to the ground; and a balancing device connected to the second end of the vehicle and configured to lift the second end of the vehicle from the ground. | 06-06-2013 |
20130137321 | UNDERWATER FLOATING DEVICE - The present invention relates to an underwater floating device ( | 05-30-2013 |
20130003503 | METHOD AND DEVICE OF OBTAINING A NODE-TO-SURFACE DISTANCE IN A NETWORK OF ACOUSTIC NODES, CORRESPONDING COMPUTER PROGRAM PRODUCT AND STORAGE MEANS - A method for obtaining a node-to-surface distance between a reference surface and a first node belonging to a network of a plurality of nodes arranged along towed acoustic linear antennas. A plurality of acoustic sequences are sent between the nodes. Each sequence is used to estimate an inter-node distance as a function of a propagation duration of the sequence between nodes. After emission by the first node of a given signal: the first node measures a first propagation duration of a first reflection by the reference surface of the given signal, and a first value of the node-to-surface distance is obtained as a function of that first propagation duration; and/or a second node measures a second propagation duration of a second reflection by the reference surface of the given signal, and a second value of the node-to-surface distance is obtained as a function of that second propagation duration. | 01-03-2013 |
20130003498 | METHOD FOR ESTIMATING AN UNDERWATER ACOUSTIC SOUND VELOCITY IN A NETWORK OF ACOUSTIC NODES, CORRESPONDING COMPUTER PROGRAM PRODUCT, STORAGE MEANS AND DEVICE - A method for estimating an underwater acoustic sound velocity in a network of acoustic nodes arranged along towed acoustic linear antennas and in which a plurality of acoustic signals are transmitted between the nodes. The method includes: obtaining two predetermined distances each separating a couple of nodes placed along a same first acoustic linear antenna ( | 01-03-2013 |
20120243370 | SEISMIC STREAMER FORMED OF SECTIONS COMPRISING A MAIN SHEATH COVERED WITH AN EXTERNAL SHEATH FORMED USING A THERMOPLASTIC MATERIAL LOADED WITH A BIOCIDE MATERIAL - System and method for providing an anti-fouling function to a streamer to be towed under water for seismic survey data collection. The method includes mixing a thermoplastic material with a biocide material to form an external sheath material; and forming an external sheath over a main sheath of the streamer to provide the anti-fouling function. The external sheath is formed from the external sheath material such that the biocide material is distributed throughout the external sheath. | 09-27-2012 |
20120184161 | MARINE DEVICE - A marine device has a floating buoy containing electronics, a submerged payload containing electrical devices and electronics, a power source and a mooring line. At least a part of the power source is submerged and electrically connected to at least one of the submerged payload and the floating buoy, and the mooring line extends between the buoy and at least one of the power source submerged part, the submerged payload and a submerged anchor having a mass allowing it to stay under the water surface. | 07-19-2012 |
20120106296 | SEISMIC DATA ACQUISITION SYSTEM COMPRISING MODULES ASSOCIATED WITH UNITS CONNECTED TO SENSORS, THE MODULES BEING AUTONOMOUS WITH RESPECT TO POWER SUPPLY, SYNCHRONISATION AND STORAGE - A module for operation in a seismic data acquisition system is described. The seismic data acquisition system includes a cabled network with a plurality of acquisition lines having electronic units assembled in series along a telemetry cable. Each electronic unit is associated with at least one seismic sensor and processes signals transmitted by the sensor(s). The module is designed to be associated with at least one of the electronic units to provide power supply and synchronization to the electronic unit(s). The module includes: autonomous synchronization means; bidirectional and autonomous power supply means to power at least one electronic unit upstream and/or downstream from the module; and means for storing and processing the signals processed by the electronic units, the storage means being bidirectional to store the signals from at least one electronic unit upstream and/or downstream from the module. | 05-03-2012 |
20100329075 | METHOD FOR ASSISTANCE IN THE LOCALIZATION OF TOWED STREAMERS COMPRISING A STEP FOR DEFINING AND A STEP FOR GENERATING DISTINCT ACOUSTIC CYCLES - A method for assistance in the localization of streamers towed by a vessel including at least one onboard acoustic controller, each streamer having: geophysical data sensors; acoustic means for measuring distance from at least one adjacent linear antenna; and means for the absolute localization of said antennas. The method includes at least one phase for the generating an acoustic cycle determining sequences and at least one phase for defining at least two distinct acoustic cycles representing a theoretical geometry capable of representing the shape of said streamers; at least one step for determining the real geometry of said streamers; at least one step for detecting a change in real geometry followed by a step for generating a new acoustic cycle, selected from among those defined during said phase for defining and adapted to said change in real geometry. | 12-30-2010 |
20100198561 | DATA ACQUISITION APPARATUS AND METHOD - The disclosure concerns a data acquisition apparatus and method. According to the disclosure,
| 08-05-2010 |
20100020644 | SEISMIC STREAMER FORMED OF SECTIONS COMPRISING A MAIN SHEATH COVERED WITH AN EXTERNAL SHEATH FORMED USING A THERMOPLASTIC MATERIAL LOADED WITH A BIOCIDE MATERIAL - Described herein is a seismic streamer formed of sections including a main sheath covered with an external sheath, wherein said external sheath is formed using a thermoplastic material loaded with a biocide material. | 01-28-2010 |
20090251991 | SYSTEM FOR ACQUIRING SEISMIC DATA IN A MARINE ENVIRONMENT, USING SEISMIC STREAMERS COUPLED TO MEANS FOR DETECTING AND/OR LOCATING MARINE MAMMALS - Discloses herein is a a system of acquiring seismic date in a marine environment, which includes: seismic streamers towed by a vessel; and means for detecting and/or locating marine mammals, characterised in that said marine mammal detection and/or location means are secured to said seismic streamers. | 10-08-2009 |