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8447523 |
High speed data transfer for measuring lithology and monitoring drilling operations
A system for determining at least one of a lithology of a formation traversed by a borehole and an operational condition of a component of a drill string disposed in the borehole is disclosed. The...
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8442769 |
Method of determining and utilizing high fidelity wellbore trajectory
Various methods are disclosed, comprising obtaining a plurality of raw depth measurements for a wellbore; obtaining survey data about a bottom hole assembly; obtaining depth compensation...
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8386083 |
Systems and methods for updating valve cracking current in mass flow controllers
A valve system for a mass flow controller that controls a flow rate of a fluid is disclosed. The valve system includes a valve movable between an open position and a closed position to adjust the...
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8364404 |
System and method for displaying data associated with subsurface reservoirs
Method and system for visualizing one or more properties of a subterranean earth formation while drilling a borehole using probability information from a modeling process. Probability waveforms...
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8305243 |
Systems and methods for compressing data and controlling data compression in borehole communication
Systems and methods compress data and control data compression in borehole communication. The systems and methods convert original data collected by a sensor from a first domain into a second...
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8301382 |
Continuous geomechanically stable wellbore trajectories
A continuous geomechanically stable trajectory in a subterranean formation is found by calculating at least one reachable stable position relative to a starting position based on geological data...
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8290711 |
Method of estimating the fracture density in a rock medium
The invention is a method of constructing a three-dimensional fracture density log of a porous formation traversed by fractures and a borehole. A number N of intersections between the fractures and...
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8245795 |
Phase wellbore steering
A method of steering a drilling operation of a well using acoustic measurements. The method includes obtaining, using a central processing unit (CPU), a clean-wet matrix line for the well, where...
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8180571 |
Wellbore surveying
This invention relates to surveying wellbores. In particular this invention provides methods of correcting magnetic surveys for the effects introduced by magnetic mud. The method of the present...
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8150663 |
Partitioning algorithm for building a stratigraphic grid
Embodiments of the invention provide a system and method for partitioning data for modelling a geological structure including laterally partitioning the data into multiple columns, where each...
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8095318 |
Method for estimating formation dip using combined multiaxial induction and formation image measurements
A method for determining dip of rock formations penetrated by a wellbore using multiaxial induction measurements and imaging measurements made from within the wellbore includes estimating dip from...
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8065085 |
System and method for measuring depth and velocity of instrumentation within a wellbore using a bendable tool
An apparatus and method for measuring depth, velocity, or both depth and velocity of instrumentation within a wellbore is provided. The apparatus includes a downhole portion movable within the...
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8050867 |
Data adaptive vibratory source acquisition method
Method for conducting a seismic survey (23) wherein the acquisition parameters are modified as the survey progresses using information (24) from sensors located to monitor structures and fixtures...
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7805247 |
System and methods for well data compression
Systems and methods in which data compression techniques are utilized to fill a predetermined channel capacity are shown. According to one configuration, event data points within test data are...
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7765067 |
Geosteering in earth formations using multicomponent induction measurements
A multicomponent induction logging tool is used on a MWD bottomhole assembly. Multifrequency focusing that accounts for the finite, nonzero, conductivity of the mandrel is applied. Using separation...
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7640111 |
Method and system for interpreting borehole geological data
Computer-based method and system are disclosed for interpreting dips, dip trends, and mineral based lithofacies data to identify certain geological events in a subsurface formation. The disclosed...
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7546209 |
Formation dip geo-steering method
A method of drilling a well. The method includes calculating an estimated formation dip angle, wherein said estimated formation dip angle being based on offset well data, seismic data, core data,...
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7487047 |
Method of interpreting well data
A geospatial modeling system may include a geospatial model database and a processor cooperating therewith for performing at least one noise filtering operation on data comprising elevations...
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7379854 |
Method of conditioning a random field to have directionally varying anisotropic continuity
The present invention is a method of generating a model of a random field which has directionally varying continuity. First, a tentative model for the random field is specified. Second, connected...
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7340418 |
Visual database for linking geography to seismic data
A medium having a plurality of computer readable files relating to geophysical seismic data recorded thereon. The files include a map display having multiple levels of geographic detail and...
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7289938 |
Method and a device for detecting discontinuities in a medium
A method and a device for detecting discontinuities in a medium by detecting maxima, e.g. in an echo signal of an ultrasound excitation of the media, with maxima corresponding to a given...
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7283910 |
Incremental depth measurement for real-time calculation of dip and azimuth
The present invention provides a method and apparatus for logging an earth formation and acquiring subsurface information wherein a logging tool is conveyed in borehole to obtain parameters of...
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7254486 |
Method and apparatus for shale bed detection in deviated and horizontal wellbores
A relative dip angle of a deviated borehole is determined from natural gamma ray measurements. Dip corrected measurements are processed to determine the thickness of thin beds, and the peak gamma...
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7249007 |
Weather and climate variable prediction for management of weather and climate risk
A method for simulating the statistical behavior of atmospheric, meteorological, or other geophysical time series having the following steps: (a) assembling an ensemble of observed data; (b)...
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7236887 |
Method of determining planar events from borehole or core images
The present invention relates to a user-guided dip picking method from electrical borehole images using Hough Transform. It includes defining a top and bottom reference curve, applying the Hough...
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7200492 |
Apparent dip angle calculation and image compression based on region of interest
The present invention provides a method and apparatus for logging an earth formation and acquiring subsurface information wherein a logging tool is conveyed in borehole to obtain parameters of...
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7164990 |
Method of determining fluid flow
A method of determining fluid flow in a volume containing two or more fluid components, including determining a pressure field for the volume. One or more streamlines are determined from the...
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7124029 |
Method for evaluating formation properties
Methods for evaluating the properties of formations surrounding a borehole, include the steps of measuring electrical properties of the formation from within the borehole; deriving a model of...
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7110323 |
Method, system and apparatus for interpreting seismic data using duplex waves
A Method for Interpreting Seismic Data Using Duplex Waves is described. Whereas substantially horizontal boundaries are readily identified using conventional processing methods based on primary...
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7027923 |
Method for determining sonde error for an induction or propagation tool with transverse or triaxial arrays
A method for determining a sonde error in a logging tool comprising a transverse array includes obtaining a first measurement using the transverse array while the logging tool is at a first height...
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7002484 |
Supplemental referencing techniques in borehole surveying
A method for surveying a borehole is disclosed which uses first and second gravity measurement devices disposed at corresponding first and second positions in the borehole and a supplemental...
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6907348 |
Synthetic acoustic array acquisition and processing
The present invention provides a method of determining a property of an earth formation using an acoustic logging tool on a bottomhole assembly (BHA) in a borehole in the earth formation. At least...
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6882937 |
Downhole referencing techniques in borehole surveying
A method for determining rotational offset between first and second gravity measurement devices deployed on a downhole tool is disclosed. The method includes positioning the tool in a previously...
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6856910 |
Method and apparatus for determining regional dip properties
A method for determining a formation dip angle including extracting features from an acquired well log to obtain a set of features, validating the set of features to obtain a subset of features,...
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6795774 |
Method for asymptotic dipping correction
Induction and other resistivity well logging tools determine formation conductivity at various depths but these measurements contain pronounced errors when the tool is proximate to an inclined...
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6754587 |
Method for processing seismic data
A method is provided for processing a seismic 3-D measurement data set, consisting of a multitude of seismic traces, each having a sequence of amplitude values or data points provided with acoustic...
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6643589 |
Simultaneous determination of formation angles and anisotropic resistivity using multi-component induction logging data
Measurements made by a multicomponent logging tool in a borehole are inverted to obtain horizontal and vertical resistivities and formation dip and azimuth angles of a formation traversed by the...
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6584408 |
Subsurface formation parameters from tri-axial measurements
Systems and methods are provided for determining various subsurface formation parameters from electromagnetic measurements. Formulas are disclosed for field components in a coordinate system tied...
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6408299 |
Type convertor registry
A generalized mechanism manages ad-hoc type conversions in computer software. A management framework improves type conversion tasks by enabling the modularization of this task by partitioning the...
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6405136 |
Data compression method for use in wellbore and formation characterization
A method is disclosed for compressing a frame of data representing parameter values, a time at which each parameter value was recorded, and an orientation of a sensor at the time each parameter...
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6393364 |
Determination of conductivity in anisotropic dipping formations from magnetic coupling measurements
A method is disclosed for the determination of horizontal resistivity, vertical resistivity, dip and strike angles of anisotropic earth formations surrounding a wellbore. Electromagnetic couplings...
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6385545 |
Method and apparatus for determining dip angle and horizontal and vertical conductivities
The present invention is directed to a method and apparatus for determining the dip angle and horizontal and vertical conductivities of a wellbore during drilling operations. If the dip angle is...
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6298158 |
Recognition and translation system and method
The invention comprises a method and system of recognition and translation, stored on a digital storage device with an operating system and running computer applications, such as a personal...
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6266618 |
Method for automatic detection of planar heterogeneities crossing the stratification of an environment
Method for automatic detection of planar heterogeneities crossing the stratification of an environment. This method for automatic detection of planar heterogeneities crossing the stratification of...
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6226595 |
Method and apparatus using multi-target tracking to analyze borehole images and produce sets of tracks and dip data
A Tracking Dip Estimator software including a novel Multi-Sine Tracking Software is adapted to be stored in a computer system memory for instructing a processor to produce a "first output"...
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6212476 |
Apparatus to measure the earth's local gravity and magnetic field in conjunction with global positioning attitude determining
A processor uses signals from at least two GPS receivers and a 3-component accelerometer located on a stable non-magnetic platform to determine the roll, yaw and pitch angles of the platform, thus...
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6167348 |
Method and apparatus for ascertaining a characteristic of a geological formation
A method for ascertaining a characteristic of a geological formation surrounding a wellbore. The method comprises first generating a set of data including azimuthal and radial information. A set of...
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6131070 |
Method of generating a fold distribution and of evaluating a seismic survey
Method of generating a fold distribution for a number of seismic sources and seismic receivers, comprises: (a) selecting a Common Mid-Point location; (b) selecting a dip within a first...
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6092025 |
Hydrocarbon edge detection using seismic amplitude
A computer implemented method and apparatus for discovering hydrocarbon bearing formations yields a direct indication of hydrocarbon resulting from analyzing seismic amplitude data. The method uses...
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6076045 |
Method for processing oriented multi-component seismic well data
A seismic prospecting method allowing positioning in space of geologic events in the neighborhood of a well and calculation of the dip and the direction of dip. Seismic waves are transmitted into...
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