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US20110242937 Method for separating up and down propagating pressure and vertical velocity fields from pressure and three-axial motion sensors in towed streamers  
A measured pressure field, a measured vertical velocity field, and two measured orthogonal horizontal velocity fields are obtained. A programmable computer is used to perform the following. A...
US20090080288 METHOD FOR CORRECTING INPUT SEISMIC TRACES FROM DISSIPATIVE EFFECTS  
A method and apparatus for correcting an input seismic trace. The method includes receiving the input seismic trace and creating a t by Q gather using the input seismic trace, where t represents...
US20110170372 WALKAWAY VSP CALIBRATED SONIC LOGS  
Methods and related systems are described relating to processing subsurface sonic and seismic data. The described techniques use anisotropy estimates derived from a walkaway VSP to calibrate...
US20110141848 Optimizing a Seismic Survey for Source Separation  
A technique includes determining at least one parameter that characterizes a seismic survey in which multiple interfering seismic sources are fired and seismic sensors sense energy that is...
US20070258323 Method for Seismic Trace Decomposition and Reconstruction Using Multiple Wavelets  
The present invention has established a method for decomposing a seismic trace, which can be a pre-stack or post-stack seismic trace, into a set of seismic wavelets of different shapes and for...
US20130016582 SYSTEM FOR EXPLORATION OF SUBTERRANEAN STRUCTURES  
A system for communication through subterranean structures underneath a surface comprises at least one exploration tool adapted to penetrate into the underground, at least one transmitter, at...
US20110096626 Machine, Program Product and Method to Determine a First Arrival of a Seismic Trace  
Embodiments of a machine, program product and computer implemented method to perform a process of picking an initial first arrival from at least one trace of the plurality of seismic traces and a...
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...
US20140269185 TIME-LAPSE MONITORING  
Described herein are implementations of various technologies for a method. The method may receive a baseline survey dataset for a region of interest. The method may obtain a transformed dataset...
US20110085416 SYSTEM AND METHOD FOR DETERMINING A FREQUENCY SWEEP FOR SEISMIC ANALYSIS  
A sweep generator is employed to generate a sweep to be used by a seismic vibrator device for generating a desired target output spectrum, wherein the frequency sweep is designed so as to comply...
US20150212223 METHODS AND APPARATUS FOR DETERMINING RESIDUAL STATIC CORRECTIONS USING INDIVIDUAL RANGES  
Methods and apparatuses calculate residual static corrections to be applied to survey data to account for upper-layer effects, such that the residual static corrections are each within an...
US20110085417 String of Sensor Assemblies Having a Seismic Sensor and Pressure Sensor  
A system includes an electrical medium and a string of sensor assemblies having corresponding outputs connected to the electrical medium, where at least one of the sensor assemblies includes a...
US20130208567 PHASE MODULATION AND NOISE MINIMIZATION FOR SIMULTANEOUS VIBROSEIS ACQUISITION  
An embodiment of the invention includes simultaneous drive signals whose respective phase angle offset(s) varies over a portion or duration of the simultaneous sweeps. Other embodiments are...
US20140119159 Methods For In-Situ Borehole Seismic Surveys Using Downhole Sources  
Methods for in-situ reservoir investigation by borehole seismic methods are provided using receiver(s) and a downhole source. The downhole source may be a microseismic event, and may be located...
US20090092007 IDENTIFYING AN INTERNAL MULTIPLE GENERATOR IN A SUBTERRANEAN STRUCTURE  
A technique is provided for identifying an internal multiple generator in a subterranean structure. The technique includes injecting wavefields at different levels in the subterranean structure,...
US20130336091 STATISTICS-BASED SEISMIC EVENT DETECTION  
Automated detection of microseismic events is performed by a system and method that provides automated calculation of one or more statistical parameters for statistics-based detection of...
US20130100771 Near-Offset Extrapolation For Free-Surface Multiple Elimination In Shallow Marine Environment  
The invention is a method for extrapolating missing near-offset seismic data (101) so that the data may be used, for example, in SRME or another multiple-reflection elimination method. The...
US20150177397 Dithered Slip Sweep Vibroseis Acquisition System and Technique  
A technique includes generating vibroseis sweeps for a vibroseis survey to produce seismic data acquired in response to seismic signals produced by the sweeps. The generation of the vibroseis...
US20060083109 Seismic source controller and display system  
A seismic survey system is described for performing offset borehole seismic survey measurement operations. According to a specific embodiment, the system may include a first seismic survey...
US20090296524 Converted Mode Seismic Survey Design  
Method for designing a converted mode (PS or SP) seismic survey to accomplish specified vertical and lateral resolution objectives at target depth. An equation (181) is provided for determining...
US20100238764 METHOD AND SYSTEM TO DETERMINE THE GEO-STRESSES REGIME FACTOR Q FROM BOREHOLE SONIC MEASUREMENT MODELING  
Methods and systems for analyzing subterranean formations in-situ stress are disclosed. A method for extracting geological horizon on-demand from a 3D seismic data set, comprises receiving sonic...
US20090288823 Efficient Multiple Prediction In Two and Three Dimensions  
A method is disclosed that uses (a) source-receiver reciprocity and (b) a method such as ISR DMO (U.S. Patent Application Publication No. 2006/0098529) that allows reconstruction of densely...
US20130070562 Method and System for Passive Electroseismic Surveying  
A method of passive surveying comprises generating one or more detected signals by passively detecting a signal generated within a subsurface earth formation due to a seismoelectric response or an...
US20110110190 METHOD FOR VELOCITY MODEL BUILDING AND ANALYSIS  
Method for velocity model building and analysis using wavefield-coordinates reflection operators in wave-equation migration or reverse-time migration.
US20060018191 Offset-azimuth binning for migration and velocity analysis  
The present invention comprises a method of choosing a cell structure for seismic gathers dictating a grid of azimuth-offset bins that can be of various shapes and sizes. Processes that use...
US20150003200 SYSTEM AND METHOD FOR DETERMINING THE POSITION OF A SENSOR IN SEISMIC EXPLORATION  
A system and method for determining the position of a sensor in seismic exploration is disclosed. The method includes directing first, second, and third sensors to emit first, second, and third...
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...
US20140050050 MICROSEISMIC SOURCE LOCATION ESTIMATION WITH HIGH RESOLUTION USING GREEN'S FUNCTIONS  
The sources of microseismic hydraulic fracture events (“hydro-fracs”) are located for image mapping by the calculation of Green's functions G(x, z, t|x′, z′, 0) which is estimated using, e.g.,...
US20110228638 SYSTEM AND METHOD OF 3D SALT FLANK VSP IMAGING WITH TRANSMITTED WAVES  
According to a preferred aspect of the instant invention, there is provided herein a system and method for imaging complex subsurface geologic structures such as salt dome flanks using VSP data....
US20120075954 Device and Method for Calculating 3D Angle Gathers from Reverse Time Migration  
A method for calculating angle domain common image gathers (ADCIGs). The method includes calculating a source wavefield pF of a seismic source; calculating a receiver wavefield pB of a seismic...
US20090290449 Processing Seismic Data Using Combined Regularization and 4D Binning  
To process seismic data, a combined four-dimensional (4D) binning and regularization procedure is performed on the seismic data, where the combined 4D binning and regularization procedure includes...
US20050024990 Method of seismic surveying and a seismic surveying arrangement  
A method of seismic surveying A method of seismic surveying comprises the step of acquiring imaging seismic data relating to an underlying geological structure at a survey location and...
US20090022010 EARTH ANALYSIS METHODS, SUBSURFACE FEATURE DETECTION METHODS, EARTH ANALYSIS DEVICES, AND ARTICLES OF MANUFACTURE  
Earth analysis methods, subsurface feature detection methods, earth analysis devices, and articles of manufacture are described. According to one embodiment, an earth analysis method includes...
US20090168600 SEPARATING SEISMIC SIGNALS PRODUCED BY INTERFERING SEISMIC SOURCES  
A technique includes obtaining seismic data indicative of measurements acquired by seismic sensors of a composite seismic signal produced by the firings of multiple seismic sources. The technique...
US20130176820 SURFACE-CONSISTENT AMPLITUDE AND DECONVOLUTION SIMULTANEOUS JOINED INVERSION  
Methods and systems for a surface-consistent amplitude and deconvolution simultaneous joined inversion are described. A one-pass estimation using input trace data for generating gain and...
US20070104028 CONSTRUCTION AND REMOVAL OF SCATTERED GROUND ROLL USING INTERFEROMETRIC METHODS  
A data set can be corrected for the effects of interface waves by interferometrically measuring an interface wavefield between each of a plurality of planned locations within a survey area; and...
US20120140593 TIME-LAPSE SEISMIC COMPARISONS USING PRE-STACK IMAGING AND COMPLEX WAVE FIELD COMPARISONS TO IMPROVE ACCURACY AND DETAIL  
A method, computer program product and system for improving the accuracy and detail in determining changes in properties associated with sub-surface geological structures. A first and a second...
US20100165790 METHOD FOR DETERMINATION OF THE OIL FORMATION'S WATER-FLOODING AREA RADIUS IN THE WELLBORE ZONE  
A method includes installing at least one grounded electrode at a certain distance away from the well sufficient enough to avoid electrical breakdowns and connecting a high-voltage electric...
US20100322030 Seismic Measurements While Drilling  
A downhole tool starts recording seismic energy. During the recording time, a surface seismic source is activated a specified number of times with a nominally defined separation between...
US20110188347 VOLUME IMAGING FOR HYDRAULIC FRACTURE CHARACTERIZATION  
Methods and systems are described for measuring effects of a hydraulic fracturing process. The techniques can utilizes cross-well seismic technology, such as used in Schlumberger's DeepLook-CS...
US20100195439 SEISMIC ACQUISITION SYSTEM AND TECHNIQUE  
An apparatus includes an array of seismic sensor units that are adapted to acquire measurements in connection with a land surface-based seismic survey. Each seismic sensor unit includes a particle...
US20130322212 SYSTEM AND METHOD OF HIGH DEFINITION TOMOGRAPHY AND RESOLUTION FOR USE IN GENERATING VELOCITY MODELS AND REFLECTIVITY IMAGES  
A system and method are provided for determining a broadband high definition reflectivity based image for a geographical area of interest (GAI). The system and method generate a conventional...
US20080232193 Methods for Noise Removal and/or Attenuation from Seismic Data by Wavelet Selection  
Seismic data traces contain noises that may exist in the form of wavelets and be represented by wavelets. A method is established for removing or attenuating the noises in the seismic data traces...
US20130308423 ROBUST STACKED SLIP-SWEEP METHOD AND SYSTEM  
A method for processing seismic data including contiguous-sweep records corresponding to rotated sweep segments includes attenuating harmonics and generating stacked traces, each stacked trace...
US20090154289 Systems and Methods for Seismic Data Acquisition Employing Clock Source Selection in Seismic Nodes  
Systems and methods for acquiring seismic data are described, one system comprising one or more seismic sources, a plurality of sensor modules each comprising a seismic sensor configured to sample...
US20100135114 WAVEFIELD EXTRAPOLATION MODELING FOR INTERNAL MULTIPLE PREDICTION  
Methods for attenuating multiple reflections in seismic data by predicting the multiples using wavefield extrapolation modeling, which uses one-way wavefield propagation in both the up and down...
US20110044132 Removing Ground-Roll from Geophysical Data using Source-Receiver Interferometry  
A method for processing geophysical data. The method includes applying a first interferometry on an estimate of a direct ground roll between a receiver location and one or more boundary source...
US20080165619 Estimation of Stress and Elastic Parameters  
Various implementations described herein are directed to estimating stresses and elastic parameters in a formation based on seismic data. In one implementation, wide azimuth seismic data may be...
US20110069580 MEASURING AND MODIFYING DIRECTIONALITY OF SEISMIC INTERFEROMETRY DATA  
Methods and apparatuses are disclosed for replacing the individual receivers used with a seismic interferometry process with an array of seismic receivers and then manipulating the array data in...
US20100274488 Neutrally buoyant sensor apparatus and method for mapping a water pathway  
An apparatus and method for mapping a water pathway. A group of sensors can be employed for detecting one or more features associated with the water pathway in a direction of flow through the...

Matches 1 - 50 out of 176 1 2 3 4 >