Method and apparatus for visualizing multi-dimensional well logging data with shapelets

A method for visualizing parametric logging data includes interpreting logging data sets, each logging data set corresponding to a distinct value of a progression parameter, calculating a geometric image including a representation of data from each of the logging data sets corresponding to a wellbore measured depth, and displaying the geometric image(s) at a position along a well trajectory corresponding to the wellbore measured depth. The progression parameter includes time, a resistivity measurement depth, differing tool modes that are sampling different volumes of investigation, and/or sampling different physical properties. The geometric images include a number of parallel lines having lengths determined according to the logging data and/or an azimuthal projection of the logging data, a number of concentric axial projections, and/or shapelets determined from parallel lines and/or concentric axial projections. The method includes dynamically determining a selected measured depth, measured ...

FORMATION STABILITY MODELING

A method can include receiving data that characterizes anisotropy of a formation; receiving a model that models one or more planes of weakness in an anisotropic formation; and, based at least in part on the model and the data, outputting information germane to stability of a bore in an anisotropic formation.

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 the multiaxial induction measurements. Dip is also estimated from the imaging measurements. The dip is determined by combining the induction and imaging measurements.

METHOD FOR DISPLAYING GEOLOGIC STRESS INFORMATION AND ITS APPLICATION TO GEOLOGIC INTERPRETATION

A method for displaying geologic stress includes determining magnitudes and directions of principal stresses at at least one a selected location. An analog symbol is generated for each magnitude and direction of the principal stresses. The analog symbols include a magnitude descriptor and a direction descriptor. The analog symbols are stored or displayed.

METHOD FOR DISPLAYING GEOLOGIC STRESS INFORMATION AND ITS APPLICATION TO GEOLOGIC INTERPRETATION

Method for transmitting wellbore data acquired in the wellbore to the surface

A method and apparatus are useful for decomposing a complex distribution of data by modeling the complex distribution as a sum of discrete simple distributions, and processing the simple distributions independently. The independent processing enables the complex distribution to be reconstructed without the simple distributions that are concluded to be spurious. The simple distributions preferably include one or more statistical distributions that are subject to being characterized by a reduced data set for efficient communication and reconstruction of the complex distribution. The modeling and processing steps preferably employ one or more evolutionary algorithms.

Identifying formation, matrix and fluid related characteristics from subsurface data using factor analysis

A method of interpreting petrophysical measurement data include arranging measurements of at least one physical property of formations into a matrix representing the measurements and selecting a range of number of unobserved factors or latent variables for factor analysis. Factor analysis is performed on the measurement matrix and comprises performing factorization of measurements matrix into a number of factorsand performing rotation of the factorization results. Whether the factor loadings for each factor have achieved a simple structure is determined and either each of the selected number of factors is associated with a physical parameter of the formations, or one is added to the number of factors and factor analysis and rotation are repeated until factor loadings of all factors have achieved simple structure such that the each of the number of factors is associated with a physical property of the formations.

System and method for visualizing data in a three-dimensional scene

A method for displaying a plurality of measurement data along a borehole trajectory includes displaying a borehole model representing the borehole trajectory; and displaying the plurality of measurement data as at least one layer overlaying the borehole model, wherein the plurality of measurement data are displayed at measurement depths corresponding to measurement depths of the borehole model.

Visualization integration of graphical logging content

A method for integrating graphical logging content of a subterranean wellbore includes processing a plurality of digitized display images and relevant context information to generate a single synchronized display image including representations of each of the plurality of display image. The plurality of digitized display images and relevant context information are received at a central processor from a corresponding plurality of source tools or source processors. The display images are representative of subterranean wellbore conditions.

Formation stability modeling

A method can include receiving data that characterizes anisotropy of a formation; receiving a model that models one or more planes of weakness in an anisotropic formation; and, based at least in part on the model and the data, outputting information germane to stability of a bore in an anisotropic formation.

SYSTEM AND METHOD FOR CONTROLLING AND MONITORING A DRILLING OPERATION USING REFINED SOLUTIONS FROM A PANISTIC INVERSION

During a drilling operation, measured data from the drilling operation may be received with a panistic inversion and risk estimate module. The panistic inversion and risk estimate module may generate a plurality of mathematical solutions from a panistic inversion that uses the measured data and one or more earth models. The one or more earth models having various parameters may be selected prior to drilling and/or while the drilling operation occurs. For each solution of the plurality of mathematical solutions generated from the panistic inversion, the panistic inversion and risk estimate module may determine if the measured data exceeds one or more probability risk thresholds associated with the drilling operation. If the measured data exceeds the probability risk threshold associated with the drilling operation, then the panistic inversion and risk estimate module may generate an alert. 1. A method for monitoring a drilling operation comprising:receiving one or more parameters for defining a probability risk threshold associated with the drilling operation;receiving measured data from the drilling operation;generating a plurality of mathematical solutions from a panistic inversion that uses the measured data and one or more earth models;from the plurality of mathematical solutions from the panistic inversion, determining if the measured data exceeds the probability risk threshold associated with the drilling operation; andif the measured data exceeds the probability risk threshold associated with the drilling operation, then generating an alert.2. The method of claim 1 , further comprising comparing the plurality of mathematical solutions against data that is specific to a desired geographic region and associated with the drilling operation.3. The method of claim 2 , wherein the data that is specific to a desired geographic region comprises at least one of local geological knowledge about the desired geographic region claim 2 , prior measurements of the desired ...

Method for displaying geologic stress information and its application to geologic interpretation

A method for displaying geologic stress includes determining magnitudes and directions of principal stresses at at least one a selected location. An analog symbol is generated for each magnitude and direction of the principal stresses. The analog symbols include a magnitude descriptor and a direction descriptor. The analog symbols are stored or displayed.

IDENTIFYING FORMATION, MATRIX AND FLUID RELATED CHARACTERISTICS FROM SUBSURFACE DATA USING FACTOR ANALYSIS

A method of interpreting petrophysical measurement data include arranging measurements of at least one physical property of formations into a matrix representing the measurements and selecting a range of number of unobserved factors or latent variables for factor analysis. Factor analysis is performed on the measurement matrix and comprises performing factorization of measurements matrix into a number of factors and performing rotation of the factorization results. Whether the factor loadings for each factor have achieved a “simple structure” is determined and either each of the selected number of factors is associated with a physical parameter of the formations, or one is added to the number of factors and factor analysis and rotation are repeated until factor loadings of all factors have achieved “simple structure” such that the each of the number of factors is associated with a physical property of the formations. 1. A method for interpreting petrophysical measurement data , comprising:in a computer, arranging measurements of at least one physical property of formations made by at least one petrophysical measuring instrument into a matrix representing the measurements and selecting a number of unobserved factors for factor analysis;in the computer, performing factorization of the measurements matrix into the selected number of factors;in the computer, performing rotation of the factorization results;in the computer, determining whether factor loadings for each factor have achieved a simple structure;in the computer, at least one of associating each of the factors with a physical parameter of the formations and adding one to the number of factors and repeating the performing factor analysis and the determining factor loadings until all factors have achieved a simple structure such that the each of the number of factors is associated with a physical parameter of the formations.2. The method of wherein the factor analysis is performed by selecting the factors claim ...

System and method for producing look-ahead profile measurements in a drilling operation

A method and system for producing look-ahead profiles measurements includes positioning an energy transmitter, such as a transmitting antenna, proximate to a borehole assembly tool. One or more energy receivers, such as receiving antennas, are positioned along a length of the borehole assembly. Next, energy is transmitted to produce look-ahead scans relative to the borehole assembly tool. Look-ahead graph data with an x-axis being a function of a time relative to the position of the borehole assembly tool is generated. The look-ahead graph is produced and displayed on a display device. The look-ahead graph may track estimated formation values based on earth models. The estimated formation values are displayed below a tool position history line that is part of the look-ahead graph. The estimated formation values in the look-ahead graph may be based on inversions of resistivity data from the look-ahead scans.

Interactive display of results obtained from the inversion of logging data

An interactive display of results obtained from the inversion of logging data is produced by obtaining and inverting the logging data using a Monte-Carlo inversion. An interactive plot having a percentile scale plotted against a location parameter is produced and a particular percentile is selected using the interactive plot. A cross-section plot for the particular percentile using the results of the Monte-Carlo inversion is produced. The particular percentile can be a curve representing a best-fit solution or a polyline representing selected solutions. Background color/shading can be displayed on the interactive plot to indicate user-defined constraints have been applied. Uncertain features can be plotted on a corresponding cross-section display using fading. Clusters of solutions that are substantially equally likely, given the measurements at a particular drill location, can be identified and plotted. A cross-section constructed from the layered models belonging to a particular cluster can be overlaid on another cross-section.

Method and Apparatus for Visualizing Multi-Dimensional Well Logging Data with Shapelets

A method for visualizing parametric logging data includes interpreting logging data sets, each logging data set corresponding to a distinct value of a progression parameter, calculating a geometric image including a representation of data from each of the logging data sets corresponding to a wellbore measured depth, and displaying the geometric image(s) at a position along a well trajectory corresponding to the wellbore measured depth. The progression parameter includes time, a resistivity measurement depth, differing tool modes that are sampling different volumes of investigation, and/or sampling different physical properties. The geometric images include a number of parallel lines having lengths determined according to the logging data and/or an azimuthal projection of the logging data, a number of concentric axial projections, and/or shapelets determined from parallel lines and/or concentric axial projections. The method includes dynamically determining a selected measured depth, measured depth interval, and/or azimuthal projection angle. 1. A method , comprising:interpreting a plurality of logging data sets, each logging data set corresponding to a distinct value of a progression parameter;calculating a geometric image comprising a representation of data from each of the logging data sets corresponding to a wellbore measured depth; anddisplaying the geometric image at a position along a well trajectory corresponding to the wellbore measured depth.2. The method of claim 1 , wherein the progression parameter comprises a parameter selected from the parameters consisting of time claim 1 , a tool mode claim 1 , and a resistivity measurement depth.3. The method of claim 1 , wherein the calculating further comprises determining a length of a plurality of parallel lines claim 1 , each line corresponding to data from one of the logging data sets claim 1 , and wherein the displaying further comprises showing a shapelet comprising the parallel lines.4. The method of claim ...

Interactive Display of Results Obtained from the Inversion of Logging Data

An interactive display of results obtained from the inversion of logging data is produced by obtaining and inverting the logging data using a Monte-Carlo inversion. An interactive plot having a percentile scale plotted against a location parameter is produced and a particular percentile is selected using the interactive plot. A cross-section plot for the particular percentile using the results of the Monte-Carlo inversion is produced. The particular percentile can be a curve representing a best-fit solution or a polyline representing selected solutions. Background color/shading can be displayed on the interactive plot to indicate user-defined constraints have been applied. Uncertain features can be plotted on a corresponding cross-section display using fading. Clusters of solutions that are substantially equally likely, given the measurements at a particular drill location, can be identified and plotted. A cross-section constructed from the layered models belonging to a particular cluster can be overlaid on another cross-section. 1. A method to produce an interactive display of results obtained from the inversion of logging data , comprising:obtaining the logging data;inverting the logging data using an inversion;producing an interactive plot having a percentile scale plotted against a location parameter;selecting a particular percentile using the interactive plot; andproducing a cross-section plot for the particular percentile using the results of the inversion.2. The method of claim 1 , wherein the particular percentile is a curve representing a best-fit solution or a polyline representing selected solutions.3. The method of claim 1 , further comprising displaying one or more background colors/shadings on the interactive plot to indicate user-defined constraints have been applied.4. The method of claim 1 , further comprising plotting uncertain features on the cross-section plot using fading.5. The method of claim 1 , further comprising identifying and plotting ...

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 the multiaxial induction measurements. Dip is also estimated from the imaging measurements. The dip is determined by combining the induction and imaging measurements.

System and method for controlling and monitoring a drilling operation using refined solutions from a panistic inversion

During a drilling operation, measured data from the drilling operation may be received with a panistic inversion and risk estimate module. The panistic inversion and risk estimate module may generate a plurality of mathematical solutions from a panistic inversion that uses the measured data and one or more earth models. The one or more earth models having various parameters may be selected prior to drilling and/or while the drilling operation occurs. For each solution of the plurality of mathematical solutions generated from the panistic inversion, the panistic inversion and risk estimate module may determine if the measured data exceeds one or more probability risk thresholds associated with the drilling operation. If the measured data exceeds the probability risk threshold associated with the drilling operation, then the panistic inversion and risk estimate module may generate an alert.

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 the multiaxial induction measurements. Dip is also estimated from the imaging measurements. The dip is determined by combining the induction and imaging measurements.

MULTIMODAL DECOMPOSITION

A method and apparatus are useful for decomposing a complex distribution of data by modeling the complex distribution as a sum of discrete simple distributions, and processing the simple distributions independently. The independent processing enables the complex distribution to be reconstructed without the simple distributions that are concluded to be spurious. The simple distributions preferably include one or more statistical distributions that are subject to being characterized by a reduced data set for efficient communication and reconstruction of the complex distribution. The modeling and processing steps preferably employ one or more evolutionary algorithms.

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 information; calculating a plurality of compensated depth measurements from the raw depth measurements and the depth compensation information and one or more additional corrections for residual pipe compliance, tide, and rig heave; calculating sag angle and correcting the survey data with the sag angle; determining a high fidelity wellbore trajectory from the compensated depth measurements and the survey data; and then employing the high fidelity wellbore trajectory in various drilling, formation evaluation, and production and reservoir analysis applications. Depth compensation information may comprise at least one of weight on bit, a friction factor, temperature profile, borehole profile, drill string mechanical properties, hookload, and drilling fluid property. The surveys may include both static and ...

METHOD FOR DISPLAYING GEOLOGIC STRESS INFORMATION AND ITS APPLICATION TO GEOLOGIC INTERPRETATION

A method for displaying geologic stress includes determining magnitudes and directions of principal stresses at at least one a selected location. An analog symbol is generated for each magnitude and direction of the principal stresses. The analog symbols include a magnitude descriptor and a direction descriptor. The analog symbols are stored or displayed.

Methodology and application of multimodal decomposition of a composite distribution

A method for analyzing formation data includes decomposing the formation data into simple components that can be used to reconstruct the formation data, wherein the decomposing is performed at a first location and includes a process to minimize an overlap between the simple components; and transmitting parameters representing the simple components to a second location for reconstructing the formation data. A system for analyzing formation data that includes a processor and a memory that stores a program having instructions for decomposing the formation data into simple components that can be used to reconstruct the formation data, wherein the decomposing is performed at a first location and includes a process to minimize an overlap between the simple components; and transmitting parameters representing the simple components to a second location for reconstructing the formation data.

System and method for analyzing a thin bed formation

One or more high resolution logs of a formation property having thin beds is provided for the laminated formation. From this log, the bed boundaries are detected and the facies for each of the beds detected is identified, using one or more high resolution logs of the laminated formation. Each of the identified facies is then defined. One or more squared logs for formation property is then generated by using the imported volumetric descriptions of the facies to generate a value of the formation property for each of the beds. A reconstructed log is generated and compared with a low resolution log of the formation property for laminated formation. By adjusting the values of the squared log the difference between the reconstructed log and the squared log may be minimized. An optimized squared log is output as having the square log and the volumetric analyses thereon.

[SYSTEM AND METHOD FOR ANALYZING A THIN BED FORMATION]

A system and method is disclosed for determining a physical characteristic or property associated with each of a plurality of layers of laminated formation traversed by a wellbore, wherein the laminated formation includes thin beds. The method includes providing one or more high resolution logs of a formation property for the laminated formation. From this log, the bed boundaries are detected and more particularly, the individual beds disposed between the boundaries. Then, the facies for each of the plurality of the beds detected is identified, using one or more high resolution logs of the laminated formation. Each of the identified facies is then defined. This includes importing volumetric descriptions for each of the facies and assigning one of the volumetric descriptions to each of a plurality of the beds detected, wherein each of the volumetric descriptions assigned to a bed is derived from a bed having the same facies. One or more squared logs for formation property is then generated ...

FORMATION STABILITY MODELING

A method can include receiving data that characterizes anisotropy of a formation; receiving a model that models one or more planes of weakness in an anisotropic formation; and, based at least in part on the model and the data, outputting information germane to stability of a bore in an anisotropic formation. 1. A method comprising:receiving data that characterizes anisotropy of a formation;receiving a model that models one or more planes of weakness in an anisotropic formation; andbased at least in part on the model and the data, outputting information germane to stability of a bore in an anisotropic formation.2. The method of wherein the anisotropy of the formation comprises anisotropy of mechanical rock properties of the formation.3. The method of wherein the anisotropy of mechanical rock properties of the formation comprises anisotropy of at least one of elastic claim 2 , poroelastic claim 2 , poromechanic claim 2 , thermomechanic and strength properties of the formation.4. The method of wherein the outputting information comprises outputting mud weight information associated with breakout of intact rock of the anisotropic formation into the bore.5. The method of wherein the outputting information comprises outputting mud weight information associated with sliding failure of one or more planes of weakness of the anisotropic formation that intersect the bore.6. The method of wherein the outputting information comprises outputting pressure sensitivity information associated with breakout of intact rock claim 1 , with sliding failure of one or more planes of weakness or of breakout of intact rock and sliding failure of one or more planes of weakness.7. The method of wherein the outputting information comprises outputting information with respect to azimuthal position of a wall of the bore.8. The method of wherein the outputting information comprises outputting bore trajectory information in conjunction with stability information.9. The method of wherein the ...

System and Method for Producing Look-Ahead Profile Measurements in a Drilling Operation

A method and system for producing look-ahead profiles measurements includes positioning an energy transmitter, such as a transmitting antenna, proximate to a borehole assembly tool. One or more energy receivers, such as receiving antennas, are positioned along a length of the borehole assembly. Next, energy is transmitted to produce look-ahead scans relative to the borehole assembly tool. Look-ahead graph data with an x-axis being a function of a time relative to the position of the borehole assembly tool is generated. The look-ahead graph is produced and displayed on a display device. The look-ahead graph may track estimated formation values based on earth models. The estimated formation values are displayed below a tool position history line that is part of the look-ahead graph. The estimated formation values in the look-ahead graph may be based on inversions of resistivity data from the look-ahead scans. 1. A method for producing look-ahead profile measurements comprising:positioning an energy transmitter proximate to a borehole assembly tool;positioning one or more energy receivers along a length of the borehole assembly;transmitting energy to produce look-ahead scans relative to the borehole assembly tool;generating look-ahead graph data with an x-axis being a function of a time relative to the position of the borehole assembly tool;producing a look-ahead graph; anddisplaying the look-ahead graph on a display device.2. The method of claim 1 , further comprising tracking estimated formation values based on earth models with the look-ahead scans.3. The method of claim 2 , further comprising displaying the estimated formation values on a display device with the estimated values being positioned below a tool position history line that is part of the look-ahead graph.4. The method of claim 3 , wherein the estimated formation values are based on inversions of resistivity data.5. The method of claim 4 , wherein the inversions comprise Monte-Carlo inversions.6. The ...

VISUALIZATION INTEGRATION OF GRAPHICAL LOGGING CONTENT

A method for integrating graphical logging content of a subterranean wellbore includes processing a plurality of digitized display images and relevant context information to generate a single synchronized display image including representations of each of the plurality of display image. The plurality of digitized display images and relevant context information are received at a central processor from a corresponding plurality of source tools or source processors. The display images are representative of subterranean wellbore conditions. 1. A method for integrating graphical logging content of a subterranean wellbore , the method comprising:(a) receiving a plurality of digitized display images at a central processor, the digitized display images being received from a corresponding plurality of source tools or source processors, the digitized display images representative of measured or modeled subterranean wellbore conditions;(b) receiving relevant context information about each of the plurality of display images at the central processor; and(c) causing the central processor to process the plurality of digitized display images and the relevant context information to generate a single synchronized display image including representations of the digitized display images received in (a).2. The method of claim 1 , wherein at least one of the plurality of display images comprises a contour plot including a wellbore property plotted with respect to vertical and horizontal depths of the subterranean wellbore.3. The method of claim 2 , wherein the contour plot comprises a color or pseudo-color contour plot.4. The method of claim 3 , wherein the relevant context information comprises ranges of vertical and horizontal axes of the plot and a range of the color or pseudo color contours in the plot.5. The method of claim 1 , wherein the relevant context information comprises at least one of a geological index range claim 1 , a graphical coordinate/pixel range claim 1 , a time or ...

Method and system for supplying well log data to a customer

A method for supplying a customer with well log data including inputting wellsite data from the customer, recommending a well tool and analysis software combination using the wellsite data, processing well log data using customer input information and the well tool and analysis software combination to obtain processed well log data, viewing the processed well log data using an interactive viewer, manipulating the customer domain information, and updating the processed well log data on the interactive viewer using the manipulated customer input information.

Identifying formation, matrix and fluid related characteristics from subsurface data using factor analysis

Multi-modal decomposition

Formation stability modeling

System and method for controlling and monitoring a drilling operation using refined solutions from a panistic inversion

During a drilling operation, measured data from the drilling operation may be received with a panistic inversion and risk estimate module. The panistic inversion and risk estimate module may generate a plurality of mathematical solutions from a panistic inversion that uses the measured data and one or more earth models. The one or more earth models having various parameters may be selected prior to drilling and/or while the drilling operation occurs. For each solution of the plurality of mathematical solutions generated from the panistic inversion, the panistic inversion and risk estimate module may determine if the measured data exceeds one or more probability risk thresholds associated with the drilling operation. Based upon the measured data exceeds the probability risk threshold associated with the drilling operation, the panistic inversion and risk estimate module may generate an alert.

Method and system for supplying well log data to a customer

A method for supplying a customer with well log data including inputting wellsite data from the customer, recommending a well tool and analysis software combination using the wellsite data, processing well log data using customer input information and the well tool and analysis software combination to obtain processed well log data, viewing the processed well log data using an interactive viewer, manipulating the customer domain information, and updating the processed well log data on the interactive viewer using the manipulated customer input information.

Formation stability modeling

A method can include receiving data that characterizes anisotropy of a formation; receiving a model that models one or more planes of weakness in an anisotropic formation; and, based at least in part on the model and the data, outputting information germane to stability of a bore in an anisotropic formation.

Multimodal decomposition of well data before transfer to the soil surface

Det er beskrevet en fremgangsmåte og en anordning for dekomponering av en kompleks fordeling av data ved å modellere den komplekse fordelingen som en sum av diskrete, enkle fordelinger, og uavhengig behandling av de enkle fordelingene. Den uavhengige behandlingen gjør det mulig å rekonstruere den komplekse fordelingen uten de enkle fordelingene som blir bestemt å være falske. De enkle fordelingene innbefatter fortrinnsvis én eller flere statistiske fordelinger som kan kjennetegnes med et redusert datasett for effektiv kommunikasjon og rekonstruksjon av den komplekse fordelingen. Modellerings- og behandlings-trinnene anvender fortrinnsvis én eller flere evolusjonsmessige algoritmer. A method and apparatus for decomposing a complex distribution of data by modeling the complex distribution as a sum of discrete, simple distributions, and independently processing the simple distributions, are described. The independent processing makes it possible to reconstruct the complex distribution without the simple distributions that are determined to be false. The simple distributions preferably include one or more statistical distributions which can be characterized by a reduced data set for efficient communication and reconstruction of the complex distribution. The modeling and processing steps preferably use one or more evolutionary algorithms.

System and method for controlling and monitoring a drilling operation using refined solutions from a panistic inversion

During a drilling operation, measured data from the drilling operation may be received with a panistic inversion and risk estimate module. The panistic inversion and risk estimate module may generate a plurality of mathematical solutions from a panistic inversion that uses the measured data and one or more earth models. The one or more earth models having various parameters may be selected prior to drilling and/or while the drilling operation occurs. For each solution of the plurality of mathematical solutions generated from the panistic inversion, the panistic inversion and risk estimate module may determine if the measured data exceeds one or more probability risk thresholds associated with the drilling operation. Based upon the measured data exceeds the probability risk threshold associated with the drilling operation, the panistic inversion and risk estimate module may generate an alert.

Method and system for supplying well log data to a customer

Formation characterization via in-phase and quadrature conductivities

A method can include acquiring electromagnetic conductivity measurements for in-phase conductivity and quadrature conductivity using an electromagnetic conductivity tool disposed in a borehole of a formation that includes particles, where energy emissions of the electromagnetic conductivity tool polarize the particles; inverting a model, using the electromagnetic conductivity measurements, for at least two of salinity, water saturation, cation exchange capacity of the particles, Archie cementation exponent and Archie saturation exponent to characterize the formation, where the model includes (i) an in-phase conductivity relationship that depends on formation porosity and water saturation and (ii) a quadrature conductivity petrophysical relationship that depends on salinity, formation grain density, water saturation and cation exchange capacity of the particles; and transmitting the at least two to a computing framework for generation of at least one operational parameter for a borehole field operation for the borehole.

Formation stability modeling

A method can include receiving data that characterizes anisotropy of a formation; receiving a model that models one or more planes of weakness in an anisotropic formation; and, based at least in part on the model and the data, outputting information germane to stability of a bore in an anisotropic formation.

Interactive display of results obtained from the inversion of logging data

Interactive display of results obtained from the inversion of logging data

Combining inelastic and capture gamma ray spectroscopy for determining formation elemental weight fractions

A method for determining weight fractions of a plurality of elements in a subsurface formation penetrated by a wellbore includes determining weight fractions of a first plurality of elements using measurements of capture gamma rays made in the wellbore. The capture gamma rays result from bombardment of the formations with high energy neutrons. A weight fraction of a second plurality of elements is determined using measurements of inelastic gamma rays made in the wellbore resulting from bombardment of the formations with high energy neutrons. The weight fraction for the second plurality is determined by setting a transformation factor for those elements common to both the first and second plurality to result in a statistically equivalent weight fraction for the common elements as determined for the first plurality of elements. Weight fractions of elements in the second plurality not common to the first plurality of elements is determined using the set transformation factor.

Methodology and application of multimodal decomposition of a composite distribution

A method for analyzing formation data includes decomposing the formation data into simple components that can be used to reconstruct the formation data, wherein the decomposing is performed at a first location and includes a process to minimize an overlap between the simple components; and transmitting parameters representing the simple components to a second location for reconstructing the formation data. A system for analyzing formation data that includes a processor and a memory that stores a program having instructions for decomposing the formation data into simple components that can be used to reconstruct the formation data, wherein the decomposing is performed at a first location and includes a process to minimize an overlap between the simple components; and transmitting parameters representing the simple components to a second location for reconstructing the formation data.

Interactive display of results obtained from the inversion of logging data

An interactive display of results obtained from the inversion of logging data is produced by obtaining and inverting the logging data using a Monte-Carlo inversion. An interactive plot having a percentile scale plotted against a location parameter is produced and a particular percentile is selected using the interactive plot. A cross-section plot for the particular percentile using the results of the Monte-Carlo inversion is produced. The particular percentile can be a curve representing a best-fit solution or a polyline representing selected solutions. Background color/shading can be displayed on the interactive plot to indicate user-defined constraints have been applied. Uncertain features can be plotted on a corresponding cross-section display using fading. Clusters of solutions that are substantially equally likely, given the measurements at a particular drill location, can be identified and plotted. A cross-section constructed from the layered models belonging to a particular cluster can be overlaid on another cross-section.

método para produzir uma exibição interativa de resultados obtidos da inversão de dados de perfilagem, e sistema para estimar propriedades de formação de subsuperfície de dados de perfilagem

Interactive display of results obtained from the inversion of logging data

An interactive display of results obtained from the inversion of logging data is produced by obtaining and inverting the logging data using a Monte-Carlo inversion. An interactive plot having a percentile scale plotted against a location parameter is produced and a particular percentile is selected using the interactive plot. A cross-section plot for the particular percentile using the results of the Monte-Carlo inversion is produced. The particular percentile can be a curve representing a best-fit solution or a polyline representing selected solutions. Background color/shading can be displayed on the interactive plot to indicate user-defined constraints have been applied. Uncertain features can be plotted on a corresponding cross-section display using fading. Clusters of solutions that are substantially equally likely, given the measurements at a particular drill location, can be identified and plotted. A cross-section constructed from the layered models belonging to a particular cluster can be overlaid on another cross-section.

Methodology and application of multimodal decomposition of a composite distribution

A method for analyzing formation data includes decomposing the formation data into simple components that can be used to reconstruct the formation data, wherein the decomposing is performed at a first location and includes a process to minimize an overlap between the simple components; and transmitting parameters representing the simple components to a second location for reconstructing the formation data. A system for analyzing formation data that includes a processor and a memory that stores a program having instructions for decomposing the formation data into simple components that can be used to reconstruct the formation data, wherein the decomposing is performed at a first location and includes a process to minimize an overlap between the simple components; and transmitting parameters representing the simple components to a second location for reconstructing the formation data.