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7617053 |
Processing of seismic data using the S-transform
The present invention relates to a method and system for processing seismic data. Seismic data indicative of at least a time-dependent seismic trace are transformed into time-frequency domain using...
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7617049 |
Distance determination from a magnetically patterned target well
Methods for determining the distance and relative axial position between twin and target wells are disclosed. In one exemplary embodiment the magnitude and direction of the interference magnetic...
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7606691 |
Method for locally controlling spatial continuity in geologic models
The present invention is a method of generating a geologic model which incorporates a local spatial trend in rock property continuity. Initially, a candidate geologic model is generated by...
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7603238 |
Analysis of time-series data using singularities
A method for acquiring and analyzing time-series data using singularities is described. This method allows for the analysis of data over a wide spectrum of frequencies. Once the data is acquired in...
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7590491 |
Signal integration measure for seismic data
A method and system of processing seismic data includes acquiring seismic data, determining a frequency spectrum for the seismic data and determining an amplitude value associated with a local...
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7584056 |
Multiple suppression in angle domain time and depth migration
Seismic data may be imaged using or recognizing substantially only primary reflections. Imaging seismic data may include for example integrating a plurality of seismic data points that have...
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7580797 |
Subsurface layer and reservoir parameter measurements
Method and system for determining a characteristic of a subsurface formation traversed by a wellbore. A fluid flow rate in the wellbore is established, the flow being associated with fluid movement...
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7577529 |
Method for determining attributes associated with net-sand thickness
The present invention provides a method for determining net-sand thickness and net-reservoir volume over a broad range of gross sand thickness in a target zone. A net-resource attribute is designed...
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7574338 |
Finite-difference simulation and visualization of elastodynamics in time-evolving generalized curvilinear coordinates
Modeling and simulation of free and forced structural vibrations is essential to an overall structural health monitoring capability. In the various embodiments, a first principles finite-difference...
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7574303 |
Seismogram correction for absorption effects
Correcting seismograms to compensate for absorption or dissipative effects that occur in the earth. In one implementation, a ratio of traveltime (t) to absorption parameter (Q) may be computed for...
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7565277 |
Method for modelling fluid flows in a multilayer porous medium crossed by an unevenly distributed fracture network
A method is disclosed for modelling low or high compressibility fluid flows in a multilayer porous medium crossed by a network of fractures of given geometry, unevenly distributed in the medium,...
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7555389 |
Creating an Absorption Parameter Model
To generate an absorption parameter model, estimated values of an effective absorption parameter are received, where the estimated effective absorption parameter values represent absorption...
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7539578 |
VH signal integration measure for seismic data
A method and system of processing seismic data includes acquiring three-component seismic data and combining horizontal components of the three-component seismic data to obtain a merged horizontal...
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7536262 |
Kalman filter approach to processing electromagnetic data
A method for tracking a sinusoidal electromagnetic signal in noisy data using a Kalman filter or other tracking algorithm. The method is useful for controlled source electromagnetic surveying where...
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7526386 |
Seismic measuring system including GPS receivers
A deformation monitoring system includes a data recording and control center, one or more base receivers with associated antennas that have a substantially unrestricted view of the sky and acquire...
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7523003 |
Time lapse marine seismic surveying
In a first aspect, a method for use in a time lapse, marine seismic survey includes accessing a set of baseline seismic data; accessing a set of acquired, time lapse seismic data; and interpolating...
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7519480 |
Driving-force output of a reciprocating actuator
The force exerted by a reciprocating actuator is estimated as a weighted sum of three quantities: a reaction-mass acceleration, a baseplate acceleration, and a relative acceleration of the...
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7516016 |
Method for improving prediction of the viability of potential petroleum reservoirs
A method for improving prediction of the viability of potential petroleum reservoirs, utilises a rock physics model appropriate for porous media, in which some of the solid material is...
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7515505 |
Method for continuous sweeping and separation of multiple seismic vibrators
A method for simultaneously operating multiple seismic vibrators using continuous sweeps (little or no “listening” time between sweeps) for each vibrator, and recovering the separated seismic...
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7508735 |
Method of analyzing vertical seismic profile data, method of producing a hydrocarbon fluid, and a computer readable medium
A P-wave slowness-polarization data set resolving P-wave slowness against P-wave polarization angle is extracted from a multi-offset vertical seismic profiling data set. A function relating P-wave...
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7502690 |
System and method for using time-distance characteristics in acquisition, processing, and imaging of t-CSEM data
There is provided herein a system and method of acquiring, processing, and imaging transient Controlled Source ElectroMagnetic (t-CSEM) data in ways that are similar to those used for seismic data....
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7499374 |
Determining acceptability of sensor locations used to perform a seismic survey
Method for determining acceptability of sensor locations used to perform a seismic survey. In one implementation, the method includes obtaining a first set of reference data, generating a first...
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7496452 |
Correction for errors caused by variation in water conditions
Method for processing seismic data to correct for errors caused by variation in water conditions. In one implementation, the method may include (a) applying a dip correction to a plurality of...
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7477992 |
Method for combining seismic data sets
A method for combining seismic data sets has application in merging data sets of different vintages, merging data sets collected using different acquisition technologies, and merging data sets...
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7474996 |
Method of processing geophysical data
A method of processing geophysical data including determining the azimuth of a mirror symmetry plane within the earth from the geophysical data having sets of geophysical data acquired with...
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7454292 |
Inverse-vector method for smoothing dips and azimuths
A system and method using inverse-vector processing to iterate through a loop of three steps: set a guide direction, invert opposite vectors, and average vectors to update the guide direction, for...
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7453765 |
Scattering diagrams in seismic imaging
The analysis of scattering diagrams of the correlation-type representation theorem in inhomogeneous media is improved by the use of virtual events. Virtual events here are events which are not...
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7440853 |
Systems and methods for detecting shallow buried objects
The invention relates to a seismic system having an array of nodes, each capable of emitting and detecting seismic signals. The array of nodes is mounted on a mobile platform in a certain geometry...
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7436735 |
Method for seismic processing, in particular for compensating birefringence on seismic traces
A method of seismic processing for obtaining information on the geophysics of the subsoil includes acquiring seismic traces at at least one point on the surface of the subsoil or in the subsoil,...
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7426439 |
Method and apparatus for marine seismic data acquisition
The present invention provides a method and apparatus for seismic data acquisition. One embodiment of the method includes accessing data acquired by at least two particle motion sensors. The data...
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7426438 |
Technique to provide seismic data-based products
A technique includes providing a pricing scheme to sell at least one seismic data-based product. The seismic data-based product(s) are generated from seismic data that is obtained from at least one...
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7425902 |
Systems and methods for evaluating geological movements
Systems and methods for monitoring and tracking transients caused by geological events are provided. In one embodiment, a geological event monitoring system is provided. The system comprises a...
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7424367 |
Method for predicting lithology and porosity from seismic reflection data
Method for predicting lithology and porosity of subsurface rocks from seismic reflection data. The seismic data is inverted to yield elastic properties of the rocks such as the compressional and...
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7421346 |
Processing seismic data
A method of matching the impulse response of a hydrophone and the impulse of a geophone accelerometer comprises performing a calculus operation upon the response of one of the hydrophone and the...
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7418350 |
Method, media, and signals for processing seismic data to obtain a velocity field
A method and apparatus for estimating a seismic velocity field from seismic data including time-amplitude representations associated with source-receiver locations spaced apart by an offset...
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7418349 |
Method of and apparatus for processing seismic data
A method of processing seismic data that includes including first and second modes of seismic energy where the second mode has been generated by partial mode conversion of the first mode at a...
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7415401 |
Method for constructing 3-D geologic models by combining multiple frequency passbands
A process for constructing a three-dimensional geologic model of a subsurface earth volume wherein resolution scales of multiple diverse data types, including seismic data, are accounted for by...
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7406383 |
Method of estimating the illumination fold in the migrated domain
The invention relates to an estimate of the seismic illumination fold (x, p) in the migrated 3D domain at an image point x, for a dip of vector p characterized in that the illumination fold I (z,...
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7403858 |
Method for detecting an occurrence zone of a mantle diapir finger location
The invention covers the mining industry. Detection method of the occurrence zone of the mantle substance diapir finger consisting in that that geological observation are carried out in riftzones...
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7400978 |
Method for updating a geologic model by seismic data
A method of predicting petrophysical characteristics of an underground reservoir by constructing a geologic model consistent with seismic measurements is disclosed which permits optimization of oil...
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7400552 |
Methods and systems for efficiently acquiring towed streamer seismic surveys
Methods and systems for efficiently acquiring towed streamer marine seismic data are described. One method and system comprises positioning a plurality of source-only tow vessels and one or more...
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7389184 |
Downhole library of master wavelets for VSP-while-drilling applications
A controllable seismic source is used in a seismic-while-drilling system for obtaining VSP data. Coded information is sent downhole about the signal generated by said controllable source. The...
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7386397 |
Processing seismic data
A method of determining a vertical component of particle velocity from seismic data acquired using at least one receiver disposed within a water column comprises determining the vertical component...
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7383133 |
Diffuse seismic imaging systems and methods
Systems and methods are disclosed to construct subsurface images from diffuse seismic energy. Various disclosed system embodiments include multiple seismic sensors that each convert received...
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7383132 |
Method for identifying resistivity anomalies in electromagnetic survey data
Method for enhancing resistive anomalies in electromagnetic geophysical survey data. Scaled values of a measured electromagnetic field parameter are plotted on a depth section at locations related...
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7376516 |
High accuracy survey grade GIS system
A method of coordinating surveys of different origins and which may be projected into different coordinate systems. The method provides a translation and rotation of the surveys to be coordinated...
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7373251 |
Method for predicting quantitative values of a rock or fluid property in a reservoir using seismic data
A method is provided for predicting a value of a designated rock or fluid property in a subterranean geologic volume. A first predicted value of the designated rock or fluid property is also...
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7366650 |
Software and hardware simulation
A verification environment is provided that co-verifies a software component 8 and a hardware component 10 . Within the same environment using a common test controller 18 both hardware stimuli...
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7356414 |
Seismic image deformation method for improved interpretation
The present invention is a method of geometric deformation of a seismic image for interpretation. The method includes selecting a geologic layer represented in the seismic image determining by...
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7348894 |
Method and apparatus for using a data telemetry system over multi-conductor wirelines
A data telemetry system for multi-conductor wirelines to enhance transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first...
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