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7627430 |
Method and system for managing information
A method for managing information associated with an oilfield operation of an oilfield, the oilfield having a subterranean formation with geological structures and reservoirs therein. The method...
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7617083 |
Method for simulating fluid flows within a reservoir by means of a chimera type discretization
A method for simulating flows in reservoirs, such as hydrocarbons, by means of chimera type grid which fluid generates a chimera grid made up of a set of elementary grids for accounting for...
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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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7613570 |
Method and apparatus for deriving a calibration filter for electromagnetic data
A method of deriving a calibration filter for electromagnetic data is provided. The method comprises providing a source ( 21, 22 ) of electromagnetic radiation and subsequently measuring components...
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7603264 |
Three-dimensional wellbore visualization system for drilling and completion data
A visualization system for a wellbore environment includes a graphics processor for creating a wire mesh model of a well and optionally a drillstring based on datasets of depth-varying parameters...
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7603237 |
Method for analyzing data having shared and distinct properties
A method to determine formation properties using two or more data sets in which the solutions corresponding to the data sets represent shared and distinct formation properties. The method analyzes...
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7603236 |
Method to determine fluid phase distribution and quantify holdup in a wellbore
The present invention is a method of determining fluid phase distribution and quantifying holdup in a wellbore. The method includes receiving a plurality of oriented probe data and grouping the...
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7599825 |
Shoulder bed effects removal
Various technologies for removing shoulder-bed effects from measurements of an earth formation made in a wellbore. In one implementation, a methodology for removing the shoulder-bed effects...
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7596481 |
Three-dimensional wellbore analysis and visualization
A visualization system for a wellbore environment includes a graphics processor for creating a computer rendered visual model of a well, and optionally a drill string, based on data sets of...
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7596452 |
Compensated caliper using combined acoustic and density measurements
A logging-while-drilling density sensor includes a gamma ray source and at least two NaI detectors spaced apart from the source for determining measurements indicative of the formation density. An...
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7593815 |
Estimating noise at one frequency by sampling noise at other frequencies
A method, apparatus and computer program for improving the signal-to-noise ratio of a signal S(t), S(t) containing Signal and noise, are disclosed. A measurement of S(t) at a frequency-of-interest...
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7588083 |
Method and system for scanning tubing
An instrument, such as a wall-thickness, rod-wear, or pitting sensor, can monitor tubing as a field service crew extracts the tubing from an oil well or inserts the tubing into the well. A digital...
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7586313 |
Determining electrical characteristics of an electrical cable
To characterize an electrical cable that is deployed in a well, a voltage input is applied to the electrical cable at an earth surface location, where the well extends from the earth surface...
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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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7577544 |
Method and system for improving target localization and characterization
A method for determining a location and characterization of an object using a magnetic gradient tensor measurement of the object is provided. The method includes determining an object magnetic...
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7577543 |
Plugged impulse line detection
A digital signal representative of a difference in pressure is received from a differential pressure transmitter. A noise signal is obtained by processing the signal through a band pass filter or...
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7577528 |
System and method for pump noise cancellation in mud pulse telemetry
Pump noise in a mud-pulse telemetry system is reduced based on analysis of the frequency characteristics of the noise generated by one or more pumps. Least mean-squares filtering may be done....
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7577527 |
Bayesian production analysis technique for multistage fracture wells
A method for characterizing a fractured wellbore involves obtaining static data and production data from the fractured wellbore, integrating the static data and the production data using Bayes's...
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7574325 |
Methods to monitor system sensor and actuator health and performance
A method for assessing health and performance of a system. In one example, the system comprises subsystems (preferably physically coupled subsystems), at least some of which are characterizable by...
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7571054 |
Method and system for interpreting tubing data
An instrument, such as a wall-thickness, rod-wear, or pitting sensor, can monitor tubing as a field service crew extracts the tubing from an oil well or inserts the tubing into the well. A...
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7567869 |
Induction tool for detail evaluation of near borehole zone
Measurements made with an induction logging tool are processed to provide a resistivity model of fluid invasion of the formation. Up to five zones can be determined over a radial distance of about...
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7565244 |
Method and system for removing effects of conductive casings and wellbore and surface heterogeneity in electromagnetic imaging surveys
Characterizing a reservoir with electromagnetic imaging surveys includes normalizing measured voltage data by transmitter moment, sorting the normalized voltage data into common receiver profiles,...
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7561997 |
Simulation system including a simulator and a case manager adapted for organizing data files for the simulator in a non-conventional tree like structure
A simulation system includes a case manager adapted for organizing and managing a plurality of sets of input data being used by the simulation system. The case manager includes a plurality of case...
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7558675 |
Probablistic imaging with azimuthally sensitive MWD/LWD sensors
A method for forming a borehole image of an azimuthally sensitive borehole or formation parameter is disclosed. Such a borehole image may be formed, for example, by processing logging sensor data...
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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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7551516 |
Vertical seismic profiling method utilizing seismic communication and synchronization
A while-drilling Vertical Seismic Profiling (VSP) data acquisition system utilizing the same seismic shots for three purposes is disclosed. First, the seismic shots provide a means for...
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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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7542853 |
Method and apparatus for geobaric analysis
A method and apparatus for geobaric analysis. The method may include acquiring an in situ gas volume of a subterranean formation, acquiring a drilling fluid characteristic, determining a volume of...
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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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7536261 |
Anti-symmetrized electromagnetic measurements
A method to determine a parameter of a subsurface formation such as anisotropy and dip comprises making at least two cross dipole measurements and forming an anti-symmetrized combination from the...
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7532129 |
Apparatus and methods for conveying and operating analytical instrumentation within a well borehole
A borehole conveyance system that integrates wireline type downhole instrumentation into the drill string tripping operations that are typically performed in a borehole drilling operation to...
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7529638 |
Method of calculating twist angle in wire-like structure, apparatus for the same, and program for the same
A method which can correctly calculate a twist angle in a wire harness, an apparatus for the method, and a program for the method are provided. In the invention, a shape obtained by deforming a...
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7529624 |
Method and apparatus for remote characterization of faults in the vicinity of boreholes
A method and system for characterization of fault conditions within a subterranean volume. In one embodiment, the system comprises means for mathematically modeling stress conditions, to predict...
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7529434 |
Brillouin distributed temperature sensing calibrated in-situ with Raman distributed temperature sensing
Methods and apparatus for distributed temperature sensing (DTS) along a single mode or multimode optical waveguide or fiber include a calibration of initial Brillouin-based DTS measurements using...
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7526930 |
Method system and program storage device for synchronizing displays relative to a point in time
A method of determining a particular value on a display, comprises the steps of: moving a time log relative to a time line until the time line identifies a selected time on the time log; moving a...
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7526383 |
Weather forecasting equipment
A weather forecast providing easy access to Internet, a subscriber's network, and a computer connected to Internet or the subscriber's network for retrieving correct weather forecast information in...
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7523002 |
Method and system for cause-effect time lapse analysis
A method of evaluating changes for a wellbore interval involves acquiring a first log data from a logging sensor during a first pass over the wellbore interval, acquiring a second log data from the...
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7519473 |
Device and method for estimating occurrence distribution of unascertained water and recording medium
On the basis of rainfall amount data ( 24 ) representing a timeseries change in the amount of rainfall in a district as an estimation target and unascertained water amount data ( 23 ) representing...
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7518526 |
Method and system for displaying scanning data for oil well tubing based on scanning speed
A method for analyzing a tubing section with multiple sensors at a consistent speed to improve the analysis and grading of tubing retrieved from an oil well. An analysis speed can be pre-set or...
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7516015 |
System and method for detection of near-wellbore alteration using acoustic data
A method for monitoring a formation property includes determining at least two slowness values from at least two datasets each characterizing an acoustic wave having a different frequency...
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7509245 |
Method system and program storage device for simulating a multilayer reservoir and partially active elements in a hydraulic fracturing simulator
A method, practiced by a Hydraulic Fracturing Simulator software, is adapted for simulating a hydraulic fracture in an Earth formation, the formation including a multilayered reservoir, a mesh...
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7496450 |
Method for imaging multiphase flow using electrical capacitance tomography
The invention relates to an image-reconstruction technique which is used to view multiphase flows using electrical capacitance tomography (ECT), which is based on non-linear heuristic global...
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7472022 |
Method and system for managing a drilling operation in a multicomponent particulate system
In general, the invention relates to a method for managing a drilling operation in a multicomponent particulate system. The method includes obtaining a plurality of geophysical and petrophysical...
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7467044 |
Method and system for assessing exploration prospect risk and uncertainty
A method and system for integrating multiple analytical processes for evaluating risk and uncertainty elements of a petroleum system. The integrated environment provides a consistent means of...
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7439494 |
Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a borehole
Data acquired using a pulsed nuclear source are susceptible to two sources of error. One error is due to large statistical noise towards the end of an acquisition window. Another source of error is...
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7437251 |
Correction of sensor non-equipotentiality in a resistivity imaging device
A method for correcting data from at least one sensor electrode in a sensor includes determining a potential difference (V) between two electrodes; from the potential difference (V), determining a...
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7433785 |
Method for predicting grain size distribution from reservoir thickness
The present invention is a method for predicting the grain size distribution at a designated location within a water-lain sedimentary deposit. Initially, the vertical thickness of the sedimentary...
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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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7415357 |
Automated oil well test classification
The subject mater herein relates to oil well testing and, more particularly, automated oil well test classification. Various embodiments described herein provide systems, methods, and software for...
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7414405 |
Measurement tool for obtaining tool face on a rotating drill collar
An apparatus for obtaining tool face angles on a rotating drill collar in substantially real time is disclosed. In one exemplary embodiment the apparatus includes a magnetoresistive magnetic field...
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