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US20120113748 Method to Improve Spatial Sampling of Vertical Motion of Seismic Wavefields on the Water Bottom by Utilizing Horizontal Rotational Motion and Vertical Motion Sensors  
A method for spatial sampling of a seismic wavefield at the bottom of a water layer at an effective spatial sampling denser than the physical layout of the sensors. The sensors comprise a sensing...
US20130286775 SEISMIC IMAGING SYSTEM FOR COUSTIC-ELASTIC COUPLED MEDIA USING ACCUMULATED LAPLACE GRADIENT DIRECTION  
The description relates to a seismic imaging technology technique for modeling a subsurface structure through waveform inversion in the Laplace domain. The seismic imaging system comprises a...
US20110273958 SYSTEM AND METHOD FOR ACCURATE DETERMINATION OF OCEAN BOTTOM SEISMOMETER POSITIONING AND TIMING  
There is provided herein a system and method of seismic exploration that produces improved locations and timings for ocean bottom seismometers. The instant method utilizes linearized inversion in...
US20150085603 SYSTEMS AND METHODS FOR DETERMINING THE FAR FIELD SIGNATURE OF A SOURCE IN WIDE AZIMUTH SURVEYS  
Systems and methods for determining the far field signature of a source in wide azimuth surveys are disclosed. The method includes determining a position of a first sensor and a source. The first...
US20090122642 Bottom-sediment classification device and method  
A device and method for determining bottom sediment is provided. The method includes transmitting a pulse of a pulse width corresponding to a water-bottom depth, extracting a series of amplitude...
US20150071032 SOURCE UMBILICAL CABLE WITHOUT FUNCTIONING POWER CABLES  
Techniques are disclosed relating to the operation of a source umbilical cable without functioning power cables from the source umbilical cable. Techniques are disclosed relating to a source...
US20110292761 Method for building velocity models for imaging in multi-azimuth marine seismic surveys  
A programmable computer is used to perform the following. 3D seismic data sets, corresponding to each azimuth in seismic data obtained from a multi-azimuth marine seismic survey, are migrated in...
US20120176861 SHOT SCHEDULING LIMITS FOR SEISMIC ACQUISITION WITH SIMULTANEOUS SOURCE SHOOTING  
According to an embodiment of the instant invention there is provided a method for collecting a blended source seismic survey that utilizes new approach to determining a random time separation...
US20140016434 METHOD AND SYSTEM OF CONTROLLING TOWING SPEED OF A SENSOR STREAMER  
Controlling towing speed of a sensor streamer. At least some of the of the embodiments are methods including: towing a sensor streamer through water at a towing speed; releasing interrogating...
US20110063946 MARINE SEISMIC ACQUISITION SYSTEM  
A marine cable for seismic surveys is described with a plurality of ceramic pressure sensors arranged in groups of at least two pressure sensors with a group output being representative of the...
US20140334259 Variable Mass Load Marine Vibrator  
Embodiments related to addition of a variable mass load to the shell of a marine vibrator to compensate for air spring effects. An embodiment provides a marine vibrator, comprising: an outer...
US20140104985 MARINE SEISMIC SURVEYING IN ICY OR OBSTRUCTED WATERS  
A skeg mounts from the stern of a towing vessel and extends below the waterline. A channel in the skeg protects cables for steamers and a source of a seismic system deployed from the vessel. Tow...
US20130121109 METHOD AND SYSTEM FOR SEPARATING SEISMIC SOURCES IN MARINE SIMULTANEOUS SHOOTING ACQUISITION  
Seismic data are obtained by recording simultaneously in seismic streamers, acquired by activating approximately simultaneously two or more seismic sources towed at two positions in the vicinity...
US20130343153 MARINE VIBRATOR SWEEPS WITH REDUCED SMEARING AND/OR INCREASED DISTORTION TOLERANCE  
A marine seismic survey using one or more moving marine seismic vibrators, where the vibrator sweeping function is based on smearing error criteria and is a downward-sweeping non-criteria linear...
US20120051175 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...
US20120008458 METHOD TO ATTENUATE STRONG MARINE SEISMIC NOISE  
Methods to attenuating strong marine seismic noises using singular value decomposition, determining noisiest traces and estimating noise components only from these traces, iteratively estimating...
US20090161486 Method for regularizing offset distribution in towed seismic streamer data  
Seismic data from towed marine streamers are sorted into two-dimensional common midpoint gathers of traces. The gathered traces are ordered by offset. The offset distribution of the ordered traces...
US20130114374 ADJUSTABLE SENSOR STREAMER STRETCH SECTION FOR NOISE CONTROL FOR GEOPHYSICAL SENSOR STREAMERS  
A sensor streamer stretch section includes at least one spring. A means for coupling the spring at each end to at least one of a sensor streamer and a lead in cable is included. A cable is coupled...
US20110149683 Combined impulsive and non-impulsive seismic sources  
A method for seismic exploration of subsurface rock formations includes actuating an impulsive seismic energy source proximate the rock formations. A non-impulsive seismic energy source is...
US20100008184 Method for aquiring and processing marine seismic data to extract and constructively use the up-going and down-going wave-fields emitted by the source(s)  
A method for acquisition and processing of marine seismic signals to extract up-going and down- going wave-fields from a seismic energy source includes deploying at least two marine seismic energy...
US20130003498 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...
US20080319674 MULTI-ATTRIBUTE SEISMIC CHARACTERIZATION OF GAS HYDRATES  
An appropriate rock physics model is chosen from well-log data and/or experience. The rock physics model is then used to generate a plurality of attribute values, including compression and shear...
US20120134234 Declination Compensation For Seismic Survey  
In seismic survey for icy waters, streamers are towed behind a vessel under the water's surface to avoid ice. GPS readings may not be consistently obtained because the ice prevents a tail buoy...
US20090274004 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...
US20090310440 FILTERING AND PRESENTATION OF HEADING OBSERVATIONS FOR COIL SHOOTING  
The presently disclosed technique includes a method that compensates for constantly changing headings as occur during coil shooting acquisition. In one aspect, the presently disclosed techniques...
US20140140171 METHODS AND SYSTEMS FOR EXTRAPOLATING WAVEFIELDS  
Methods and Systems for extrapolating wavefields while avoiding disruptions due to spatial aliasing are disclosed. Pressure wavefields measured with pressure sensors and vertical and horizontal...
US20080144436 Time-Lapse Seismic Acquisition  
Methods for generating a time lapse difference image. In one implementation, the method includes estimating a trace in a first seismic survey data set at each trace coordinate of a second seismic...
US20090323467 SYSTEM AND TECHNIQUE TO OBTAIN STREAMER DEPTH AND SHAPE AND APPLICATIONS THEREOF  
A technique includes obtaining first measurements acquired by sensors of a towed seismic streamer, which are indicative of an inclination of the streamer. Based at least in part on the...
US20140198605 WAVEFIELD MODELLING AND 4D-BINNING FOR SEISMIC SURVEYS FROM DIFFERENT ACQUISITION DATUMS  
A method for maximizing a repeatability between a base seismic survey and a monitor seismic survey of a same surveyed subsurface during a 4-dimensional (4D) project. The method includes receiving...
US20090016158 Seismic exploration process enabling the suppression of ghosts due to reflections at the water surface, and process for processing seismic data in order to suppress these ghosts  
The invention relates to a process for marine seismic exploration at least two different depths by means of streamers, each including a set of hydrophones, the acquisition of data at the different...
US20080106971 Method of subsalt velocity analysis by combining wave equation based redatuming and kirchhoff based migration velocity analysis  
A low-cost general method to perform subsalt velocity analysis is provided. For instances where sediment velocity structure is relatively simple, the method includes a single one-time redatuming...
US20120134235 Areal Marine Seismic Exploration Method  
Autonomous self-pop-up multicomponent bottom nodes (self-pop-up nodes SPN) are deployed to the bottom of an exploration area along parallel lines of exploration at specified spaced points by a...
US20110032796 System and method for producing an acoustic pulse using live steam  
An improved system and method for seismic exploration using live steam involves creating a cavity of live steam in a body of water, the cavity of live steam imploding due to the water cooling the...
US20140269180 Gravity Measurements By Towed Streamers  
Techniques are described for measuring gravity using towed streamers. In an embodiment, a towed streamer apparatus comprises a plurality of micro electro-mechanical system (MEMS) sensors. One or...
US20100118646 Seismic vibrator array and method for using  
A method for generating seismic energy for subsurface surveying includes operating a first seismic vibrator and operating at least a second seismic vibrator substantially contemporaneously with...
US20100302902 DIGITAL AIR GUN  
A marine air gun generates an acoustic signal in water, for example, during a marine seismic survey. The marine air gun includes digital electronic circuitry. The digital electronic circuitry may...
US20120020185 Collision Avoidance for Instrumented Probes Deployed From a Seismic Vessel  
One embodiment of the invention concerns a probe that couples to a seismic vessel via a tow cable. When deploying probes from a seismic vessel that is towing source arrays and streamers, the probe...
US20110228636 Cetacean Protection System  
An embodiment according to one or more aspects of the present disclosure for conducting a marine survey includes a survey spread comprising a plurality of receivers and an energy source that is...
US20130114375 Seismic Acquisition Method for Mode Separation  
Method for separating different seismic energy modes in the acquisition (65) of seismic survey data by using sensors that preferentially record a single mode (63), optionally combined with a...
US20120147700 Determining Streamer Depth and Sea Surface Profile  
A technique includes receiving data indicative of acoustic measurements acquired by receivers disposed on a seismic receiver spread including at least one streamer. The technique includes...
US20100226204 MARINE SEISMIC SURVEYING IN ICY OR OBSTRUCTED WATERS  
A skeg mounts from the stern of a towing vessel and extends below the waterline. A channel in the skeg protects cables for steamers and a source of a seismic system deployed from the vessel. Tow...
US20090279387 Marine passive seismic method for direct hydrocarbon detection  
A method for detection of hydrocarbon bearing formations below the bottom of a body of water from seismic signals includes moving a plurality of spatially distributed seismic sensors in a body of...
US20080253226 System and method for marine seismic surveying  
A system for marine seismic surveying comprises at least one marine seismic streamer; at least one pressure sensor mounted in the at least one marine seismic streamer; at least one particle motion...
US20110211423 Gravity Measurements Using Seismic Streamers  
A technique facilitates collection and use of data on subterranean formations. The technique comprises obtaining gravity measurements through the use of seismic streamers. At least one streamer is...
US20090073804 USING SOURCE ELEVATION MEASUREMENTS TO REMOVE SEA PERTURBATIONS  
A method for correcting marine seismic data is described in which a measured surface elevation relative to a reference surface of an array of source units is used to compensate for variations in...
US20120069704 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...
US20080008037 ACOUSTIC PROPAGATION VELOCITY MODELING METHODS, APPARATUS AND SYSTEMS  
Methods, apparatus, and systems for accurately estimating acoustic propagation velocity are described. One method comprises deploying in a marine environment a towed seismic spread comprising a...
US20130044565 PIEZOELECTRIC SENSORS FOR GEOPHYSICAL STREAMERS  
A disclosed digital sensor includes a pair of piezoelectric sensors that respond to acceleration and pressure in opposite ways, a pair of digital transducer circuits each employing a quantized...
US20100103772 Marine Seismic Acquisition  
A method of conducting multiple source, multiple signal seismic surveys in a marine environment are provided.
US20100097885 REMOVING SEISMIC INTERFERENCE USING SIMULTANEOUS OR NEAR SIMULTANEOUS SOURCE SEPARATION  
A technique includes providing seismic data that is indicative of energy that is sensed in response to a first operation of at least one seismic source in a first seismic survey and a second...

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