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9001619 Method for imaging microseismic events using an azimuthally-dependent focal mechanism  
Disclosed herein are various embodiments of methods and systems for determining the orientation and direction of first motion of a fault or fracture by optimizing an azimuthally-dependent...
8995224 Real-time velocity and pore-pressure prediction ahead of drill bit  
Techniques for estimating velocity ahead of a drill bit include generating seismic waves at a surface from at least two different source positions in the vicinity of a borehole, receiving seismic...
8995223 Method for removing Scholte waves and similar ground roll type waves from seismic sea bottom data shallow waters  
The various embodiments of the present invention provide a method for removing a Scholte waves and similar ground roll type waves from a seismic sea bottom data in a shallow water. The method...
8982664 Optimal source signature determination  
The invention relates to processing seismic data that includes signals from at least two sources and typically three or four sources where source separation is necessary for geophysical analysis....
8976624 System and method for processing seismic data for interpretation  
A method is provided for processing seismic data for interpretation. The method includes recording an original seismic data trace, decomposing the original seismic data trace into a set of...
8964505 Device and method for determining seismic offset in marine acquisition  
Computing device and method for generating an image of a subsurface. The method calculates an offset shift of measured offsets between a seismic source and plural receivers of a streamer. The...
8965706 Noise filtering of seismit data  
Adaptive filtering method to remove ground roll from seismic data. In an M channel adaptive filter, weights Wi are set using an adaptive algorithm based on seeking the minimum in the partial...
8960280 Method for determining fracture plane orientation using passive seismic signals  
A method for determining fracture plane orientation from seismic signals detected above a subsurface formation of interest includes detecting seismic signals using an array of seismic sensors...
8947974 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...
8923093 Determining the quality of a seismic inversion  
A method for evaluating a quality of a seismic inversion. The method includes performing a first match between seismic data and borehole seismic data at one or more borehole locations to generate...
8908473 Method of subsurface imaging using microseismic data  
A method of subsurface imaging is disclosed, the method involving using input data relating to the geometry of a fracture in a subsurface medium, mechanical properties of the medium and in-situ...
8902705 Regularisation of irregularly sampled seismic data  
There is provided a method of spatially shifting seismic signals acquired through a seismic survey using the steps of identifying within the signals a set of N actual locations of seismic...
8902708 System and method for seismic beam formation that accounts for equipment misalignment  
Seismic data representing the propagation of seismic energy through a geologic volume of interest is processed. The seismic energy propagates through the geologic volume of interest from one or...
8902706 Technique and apparatus for seismic data quality control using non-linear regression analysis  
A technique includes receiving seismic data acquired in a seismic survey. The technique includes determining a geophysical trend of trace amplitudes indicated by the seismic data based on...
8902700 Borehole seismic acquisition system  
A borehole seismic acquisition system is described with a plurality of sensors arranged so as to identify within the data measured by the pressure sensors P- and S-wave related signals converted...
8879354 Method of acquiring vibroseismic data concerning a zone of the subsoil, and seismic exploration method including such a method  
The invention concerns a method of acquiring vibroseismic data concerning a zone of the subsoil. This method comprises the following steps: —operating a vibroseismic source so that it transmits a...
8879355 3-D harmonic-source reverse time migration systems and methods for seismic data analysis  
Computing device and method for processing seismic traces to produce an image of a subsurface area. The method includes receiving a series of seismic traces related to the subsurface area and...
8873333 Geophysical signal processing  
A method of processing geophysical signals obtained by—monitoring the response of the earth to an source using a plurality of receivers is described including the evaluation of sums or integrals...
8873334 Correlation techniques for passive electroseismic and seismoelectric surveying  
A method for surveying, may include receiving, by a processor, first survey data from a first source, the first source comprising a first signal generated by a subsurface earth formation in...
8867308 System, method and computer program product for stacking seismic noise data to analyze seismic events  
Disclosed is a method for determining seismic event data from indications of seismic noise, the method including receiving seismic trace data from a plurality of locations, and providing a virtual...
8861308 Simultaneous joint inversion of surface wave and refraction data  
A technique includes a method and apparatus for simultaneous joint inversion of surface wave and refraction data to identify near surface geophysical and geological properties.
8854919 Generating inversion ready seismic data  
A technique includes receiving first seismic data acquired by one or more receivers in response to energy produced by one or more seismic sources interacting with a subsurface feature. The first...
8831886 System and method for reconstructing microseismic event statistics from detection limited data  
Embodiments of this invention relate to compositions and methods of processing a subterranean formation including collecting microseismic data from one wellbore, collecting amplitude ratio...
8825409 Tracing seismic sections to convert to digital format  
Method, system, and computer program product for tracing seismic sections to convert to digital format are provided. The method includes: receiving a scan of a seismic section having multiple...
8811116 Vibroseis acquisition method  
A method of performing a Vibroseis survey is described including the step of obtaining signals generated by activating vibratory sources at times T0 and T1, respectively, for a sweep period S and...
8811115 Attenuating seismic interference noise using a dual sensor recording system  
A method for attenuating noise in marine seismic signals includes cross ghosting pressure responsive marine seismic signals and contemporaneously acquired motion responsive marine seismic signals....
8781749 Attenuating noise in seismic data  
Noise may be filtered or attenuated from seismic data by building a four-dimensional volume using the acquired seismic data and then applying a random noise attenuation filter to the...
8773949 Removing noise from a seismic measurement  
A technique includes spatially filtering a signal that is derived from a seismic acquisition. The filtering is associated with a filter length, and the filtering includes varying the filter length...
8767507 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...
8760966 Joint interpretation of Rayleigh waves and remote sensing for near-surface geology  
A computer implemented technique for use in seismic data interpretation and, more particularly, with respect to near-surface geological structures, includes a computer-implemented method,...
8755249 Automatic dispersion extraction of multiple time overlapped acoustic signals  
Slowness dispersion characteristics of multiple possibly interfering signals in broadband acoustic waves as received by an array of two or more sensors are extracted without using a physical...
8750072 Seismic imaging systems and methods employing a fast target-oriented illumination calculation  
In various disclosed seismic imaging systems and methods, a fast target-oriented illumination calculation technique is employed to obtain a data volume or “matrix” of approximate illumination...
8743656 Method of seismic data processing  
The invention relates to a method of seismic data processing, wherein the data includes a set of seismic traces, with each trace including a signal that has been recorded by a sensor after having...
8737165 Interferometric seismic data processing for a towed marine survey  
A method for processing seismic data. The method includes receiving the seismic data acquired at two or more sensors on a towed marine survey and regularizing the received seismic data into a...
8730761 Attenuating noise in seismic data  
The technologies described herein include systems and methods for reducing noise in seismic data. More specifically, implementations may determine an amount of over-sampling for a frequency range...
8724428 Process for separating data recorded during a continuous data acquisition seismic survey  
Method for separating signals recorded by a seismic receiver and generated with at least two vibratory seismic sources driven with no listening time. The method includes receiving seismic data...
8724427 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...
8717846 4D seismic signal analysis  
Methods of seismic data collection are described that reduce the amount of data required, reduce noise in the data collected and collect more data in areas where data collection is required. This...
8705315 Simultaneous wavelet extraction and deconvolution in the time domain  
Blind wavelet extraction and de-convolution is performed on seismic data to enable its practical usage in seismic processing and to provide quality control of data obtained in areas where data...
8693283 Estimation of time shift based on multi-vintage seismic data  
The invention is a method of calculating seismic time shifts Δ{right arrow over (t)}(t), comprising: conducting a number (n) of three or more seismic surveys with large time differences such as...
8687463 Method for processing at least two sets of seismic data  
This invention relates to a method for processing at least two seismic data sets (10, 20), each data set comprising several seismic traces (i, j) grouped by bins (Bi, Bj) and by offset classes...
8688757 Method and system of subsurface horizon assignment  
Subsurface horizon assignment. At least some of the illustrative embodiments are methods including: obtaining, by a computer system, a seismic data volume; identifying, by the computer system, a...
8681583 Method for calculating spatial and temporal distribution of the Gutenberg-Richter parameter for induced subsurface seismic events and its application to evaluation of subsurface formations  
A method for evaluating fractures induced in subsurface formations includes determining hypocenters and origin times of induced seismic events from seismic signals detected by seismic sensors...
8670288 Velocity model for well time-depth conversion  
Systems and methods create a velocity model for well time-depth conversion. In one implementation, a system optimizes a time-depth relationship applied to data points from a single well to...
8644110 Methods and systems for spurious cancellation in seismic signal detection  
Methods and systems utilizing seismic sensors configured or designed for use in seismic signal detection are provided so as to reduce the occurrence of spurious responses of the sensors. A method...
8630146 Method and apparatus for estimating formation permeability and electroacoustic constant of an electrolyte-saturated multi-layered rock taking into account osmosis  
An acoustic source on a logging tool is used to generate acoustic waves in a borehole. Acoustic detectors on the logging tool measure the generated acoustic waves. Electrodes on the logging tool...
8619498 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...
8620082 Sonar image texture segmentation  
Systems and methods for sonar image feature extraction, which fit a parameterized statistical model to sonar image data to extract features that describe image textures for follow-on pattern...
8614930 System and method for seismic data modeling and migration  
A system and computer-implemented method for accounting for temporal dispersion in low-order finite difference seismic wave propagation is disclosed. An embodiment of the method includes...
8614929 Method for interpreting repetitive seismic data considering seismic frequency band in the evaluation of pore pressures  
A method for exploiting underground porous media via injection or production of a fluid is disclosed, wherein repetitive seismic records are interpreted taking into consideration the seismic...

Matches 1 - 50 out of 430 1 2 3 4 5 6 7 8 9 >