Aspen Geolog is a leading software suite for advanced petrophysical analysis and formation evaluation used in the energy industry. It provides tools for petrophysical and geological analysis, well data management, and robust data integration, and is utilized by a majority of the top oil companies worldwide.

 

 

Highlights in Aspen Geolog 14.5

Aspen Geolog V14.5 includes many new features and enhancements to improve the user experience and increase productivity. Selected highlights are briefly described below.

Enhancements to petrophysical workflow

New NMR functionality includes support for the Halliburton XMR and Weatherford FMR tools, a new processing module delivering faster inversion and including support for inversion of T1 experiments and greater flexibility in the interpretation modules.

Sensitivity analysis has been added as a general option in the module launcher allowing users to generate parameter sensitivity outputs that can be displayed on tornado charts.

New functionalities for enhanced geological interpretation

Borehole image interpretation has been enriched with a new module allowing the identification and quantification of heterogeneity from image logs. This is particularly useful in carbonates where users can now identify, quantify and analyze vugs and their connectivity, and infer their contribution to porosity.

New modules have been added to compute mineral composition using various models based on geochemical data (XRF or elemental composition). Several standard analysis and classification plots have been added to aid with the interpretation.

Updates to engineering views

The interpretation of pressures in the Formation Test (FT) Plot has been enhanced with more flexibility for arbitrary gradient analysis.

Duns and Ros flow map and slip velocity calculations have been added to the Production logging view. In addition, viscosity correlations have been added to the PVT options, and the calculated viscosity can now be used for the computation of the velocity profile correction factor and display of the gas-liquid slip velocity flow map.

New energy / sustainability

A new module has been added to compute CO2 storage capacity for various storage media (deep saline aquifers, depleted oil and gas reservoirs, coal beds adsorption) using different computation methods (USDOE and CSLF).

New modules for computing pure hydrogen properties and hydrogen solubility in NaCl brines have been added.

Updates to OSDU connectivity

The Aspen Geolog to OSDU connectivity has been enriched with a new map-based view that allows better access to georeferenced wells along with easier definition of connection settings. In addition, the import and export functionalities are now directly accessible from that map view, allowing for faster and seamless exchange of data between Aspen Geolog and the OSDU instance.

New Features in Aspen Geolog 14.5:

Borehole Image Processing and Analysis

The new Matrix Image (tp_image_matrix) module computes a background (matrix) image by removing non-crossing heterogeneities.

A suite of modules, layouts, and xplots has been added to the Image Analysis menu to aid in detecting, classifying, and quantifying resistive and conductive heterogeneities from resistivity images.

Previously, if accelerometer logs (with consideration of the depth measurement offset) did not cover the complete image interval at the bottom, then performing speed correction was not possible and an image was not generated over this interval. Now, the uncorrected image is copied to the output over this interval to avoid the loss of image data, which can be significant for data with a large depth offset between accelerometer and image data.

Image data is no longer lost at the bottom of the interval when the pad correlation module (tp_speedcorrect_correlate) is run.

Support for Antares orientation data has been added to the Inclinometry QC workflow.

In the FMI speed correction (tp_speed_correction_fmi) and image generation (tp_image_from_fmi) modules, the ORIENTATION_DEPTH parameter now provides the option to depth-reference the tool orientation logs to the toolstring bottom as an alternative to being referenced on-depth with the FMI IMAGE.

A breakout azimuth (AZIM_BREAKOUT) log and a flag log (TYPE) that indicate if the borehole failure is a breakout, tensile fracture, or if both occur at the same depth, are now output from the Breakout/Tensile Intervals (tp_geom_breakout_from_dip) module in the Dip Analysis menu. The flag log can be displayed in a layout interval track or to highlight the zones with color where breakouts and/or tensile fractures occur, it can be displayed in a flag track using the borehole_failure_color character colormap.

Core Analysis (RCA)

In the Pore Throat Radius and Permeabilities (core_micp_ptr) module, a pore throat radius apex (PTR_APEX) log is now output when the Pittman method with the R_APEX option is selected.

Database

Previously, TOPS to TOPS interpolation performed like a POINT to TOPS interpolation, where the point values were averaged within the interval. This has been fixed so that TOPS to TOPS interpolation now does a weighted average based on interval thickness.

Deterministic

New modules to estimate Hydrogen properties have been added to the Fluid Properties menu. This includes hydrogen properties computation from Equation of State (EoS), viscosity calculation and estimation of hydrogen solubility in NaCl brine.

A module (tp_ccus_co2) for estimating CO2 storage capacity for different types of storage media has been added to the Unconventionals | CCUS | Storage Capacity menu.

The Shale Volume (tp_determin_vsh) module can now process an external VSH input.

The PHIT_SH parameter has been removed from the Water Saturation (tp_determin_sw) module. The input PHIE, PHIT and VSH logs were being used, therefore the PHIT_SH value was already included in the relationship between these three logs.

In the RW from SP (tp_determin_rwa) module, when the saturation calculation method is set to SP, the options to calculate the RMF value are now Interval (using the RMFS and MFST constant values) or Log (using the RMF log).

The option to output the hydrogen corrected logs, RHO_COR_HC and NPHI_COR_HC in the Deterministic Full Analysis (tp_determin) and Apparent Porosity (tp_determin_phi) modules has been added.

Documentation

The customer support website address has been updated to https://esupport.aspentech.com/ in the help.

The list of Neutron tools and their descriptions shown in Processing Menu | Petrophysics Menu | Multimin | Additional information| Neutron Tools has been updated in the help.

In the Processing menus, selecting Help from a module’s right-click menu, now opens the selected module’s doc within the Reference section of the help.

File Exporter

A specified log attribute can now be exported in LAS2, LAS3, CSV, TAB, and PRN output formats. For example, the AZIMUTH_TYPE attribute of the AZIM_APP log in the Dips set. In the LAS formats the attribute is added to the curve description. In the other formats the output curve name has the attribute value appended.

Formation Testing

FT Plot and Formation Tester track:

An option to extend fluid gradients beyond zone boundaries to intersect with arbitrary gradients has been added

The fluid type of arbitrary gradients can now be defined.

Fluid contact levels between arbitrary and calculated gradients are now calculated and displayed.

An option to define which fluid contact levels to show has been added.

An option to select INTERVAL_NO as a color expression to color pressure points by interval has been added.

Formation Tester track only:

An option to display fluid contact depth labels in TVD or TVDSS even when the depth reference used to control the layout scaling is different (e.g., DEPTH) has been added.

Frequency

The Gaussian curve line can now be saved as a curve function.

Renaming points now automatically updates the default log/constant names.

Full Waveform Sonic

Support for the Weatherford LWD CrossWave® azimuthal sonic tool has been added.

Support for the Halliburton LWD QBAT™ multipole sonic tool has been added.

General

Scaled fill patterns are now rendered with the technique previously used in Geolog 8 resulting in a less pixelated appearance.

Geochemistry

A new suite of modules (Mineral Analysis) has been added to the Geochemistry menu. These modules allow the calculation of normative minerals using various models, based on geochemical input data.

Commonly used plots for mineralogy and rock analysis from geochemical data have been added to the new Mineral Analysis menu.

For example, a TAS diagram (total alkali versus silica) Xplot based on Middlemost, E.A.K. (1994) Naming Materials in the Magma/Igneous Rock System.

Geolog-Link Plug-in (Petrel Connector)

Support for Petrel 2023 and Petrel 2024 has been added.

Geomechanics

A breakout azimuth (AZIM_BREAKOUT) log and a flag log (TYPE) that indicate when the borehole failure is a breakout, tensile fracture, or if both occur at the same depth, are now output from the Breakouts from Dips (tp_geom_breakout_from_dip) module in the SHmax from Polygon menu. The flag log can be displayed in a Layout interval track or to highlight the zones with color where breakouts and/or tensile fractures occur, it can be displayed in a flag track using the borehole_failure_color character colormap.

The ability to apply a different colormap and scaling has been added to the Stereonet Stability Plot view.

In the Wellbore Stress Plot view, labels in the legend have been updated to show that minimum and maximum stresses are tangential stresses.

Geomechanics stress views (Stress Polygon, Stress Mud window, Stress Stereonet Stability, and Stress Wellbore):

In calculator mode, the Pressure or Mud Weight units can now be changed.

The Apply button has been moved just under the Mode group on the Controls panel. Both are now fixed in position and do not scroll with the rest of the panel.

Graph

The option to display data value labels on charts including percentages on pie and doughnut charts has been added.

Hole Geometry

If a depth value is outside the log data range and within the datum range, then the depth value is set to top or bottom of data so that data is displayed in the plot. If the datum range does not include log data, then the Depth input is made insensitive.

Layout

Zoom options have been added to most of the Layout Edit tools, enabling zoom in, zoom out and changing scale while the Edit <tool> dialog box is open.

New tracks have been added:

Multi-Curve track to display multi-finger caliper or similar data.

Pie Chart track to display lithology codes or electrofacies indices.

Loglan

An option has been added that allows constants and intervals to be set up to behave like logs. See About Constants/Intervals with Log Behavior for more information.

The supported Python version has been updated from 3.8 to 3.11. Support was added to allow non-compiled loglan modules to access multiple versions of Python. The following Python versions have been tested for use with non-compiled Python scripts (3.8, 3.11, 3.12).

The Module Combiner can now create a combined module that does not generate output.

Lorenz Plot

Colors can now be automatically assigned to flow unit categories when using the Edit Zones tool.

Module Launcher

An option that allows constants and intervals to behave like logs has been added. In the module launcher, the Location field of these parameters is shown with a white background. The following modules have been updated to use this new functionality: tp_determin, tp_determin_badhole_coal, tp_determin_lith, tp_determin_perm, tp_determin_phi, tp_determin_phia, tp_determin_rwa, tp_determin_sw, tp_quickin, russian_sp_rw, and russian_sw.

The ability to perform sensitivity analysis is now available. The Tornado Chart which can be used to view the sensitivity analysis results is now available on the New tab of the Well application.

A change has been made to ensure that there is no Monte Carlo output for module table rows that are input, but not visible and have the Monte Carlo Include check box selected.

When the Launcher is run using multiple wells, the "Warning: <log> not found in input set" is no longer displayed in the feedback area as it had the potential for a false warning.

NMR

The NMR menu has been reorganized into Inversion, T2 Analysis, and CMR & MRIL Inversion (Legacy).

Two new data preparation modules have been added for the Halliburton Xaminer® Magnetic Resonance (XMR™) tool.

The Weatherford Focused Magnetic Resonance (FMR) tool is now supported.

The maximum number of porosity bins in the Multi-Bin Porosity (tp_nmr_porosity) module has been increased from 10 to 16.

A T1 distribution option has been added to the Format External T2 Distribution, Bound Fluid and Multi-Bin Porosity modules.

The T2 Analysis | Bound Fluid (tp_nmr_t2_bfv) module now accepts logs in addition to constants for the T2 Cutoff parameters.

In the T2 Statistics (tp_nmr_t2_stats) module:

The percentile value (default is 20%) of the cumulative T2 distribution can now be defined by the user.

An option to use an NMR badhole flag to exclude intervals from the calculations has been added.

The following enhancements have been made to the NMR Inversion (tp_nmr_inversion2d) module:

A Log option for the regularization parameter has been added.

T1 inversion processing has been added.

1D T2 inversion with improved algorithms has been added. As a result, this module can now process NMR echoes from any tool.

The 2D and 3D inversion algorithms have been improved for better handling of noise.

Array Data Viewer

T1 and T2 sequence type options have been added to the Experiment Acquisition Parameter Selection dialog box.

OSDU

OSDU Login

The AspenTech OSDU connector set up (refresh token) has been moved out of the Aspen Geolog user preference file into its own storage. This enables single sign on use in other AspenTech Subsurface Science and Engineering (SSE) products.

Copy/paste is no longer required to retrieve the OSDU access token.

OSDU Connector

A map-based view of OSDU and Aspen Geolog wellbore data is now provided.

A Properties dialog box allows easy configuration of the osdu_configuration files.

Project geographic limits provide a sub-set of the world-map.

Import and Export tools can be launched based on the map wellbore selection.

OSDU Exporter (Ingest Module)

Export is now provided as a separate dialog box in the OSDU Connector view in Project.

It is a single step operation to generate system-of-record LAS and DLIS files and upload to OSDU.

Has special controls for OSDU special fields.

OSDU Importer

The last used *.osdu_configuration file is saved for the next time the view is opened.

A new filter field has been added to sub-set the selected wellbore work-products.

Can be launched from the new OSDU Connector view using a map-based selection.

Pore Pressure Prediction

The layout associated with the Pore Pressure Prediction module is now created by the processing module instead of a script module.

A new Fracture Pressure from Fit Method Xplot has been added to the Pore Pressure Prediction menu. In addition, the script module which launched the processing module, created the Fracture Pressure Fit Xplot, and the associated layout has been removed.

The option to create an output report has been removed from the Pore Pressure Prediction module. Instead, report templates (Metric and Imperial) are now provided on the menu under Pore Pressure Evaluation Report.

Production Logging

Viscosity correlations have been added to the PVT dialog box. Viscosity is now used in the calculation of the Velocity Profile Correction Factor (VPCF) and the display of the gas-liquid slip velocity flow map.

The Duns-Ros flow map option and slip velocity calculations have been added.

Query

Unit conversion of simple constants now works across Xplot, Frequency and GeologSQL queries.

Changes to GeologSQL include:

Support for multiple sets in the FROM clause.

Support for the INTERVAL_SET symbol in the FROM clause.

There is a new ONLY keyword that can be appended to the FROM clause to avoid normal Aspen Geolog set searching. This allows precision control over the search set sequence in GeologSQL queries. Single queries now have better support in both interval and non-interval modes.

Report

The Show Variable Codes feature has been extended to Show Field Codes which displays codes for all embedded variables, graphics and queries.

The option to scale embedded objects in a report, (for example, Frequency, Xplot, and Layout views) has been added.

Improvements to the Query result table include:

Rows and columns can be swapped.

Some formatting options are provided for the headings.

Grid lines can be shown in the table.

The option to hide any empty columns.

Rock Physics

The Fluid Properties by FLAG (tp_rpfs_flag) module has been updated to include equations for CO2 (density and velocity).

Security

Aspen GeologV14.5 is built with QT version 5.15.2.

Aspen GeologV14.5 runs on Tcl/Tk 8.6.13.

OpenSSL (1.0.2) has been upgraded to OpenSSL (1.1.1).

Stereonet

Trend and plunge values are now output as additional Eigenvector statistics.

The option to specify if the Trend/Plunge of the Eigenvectors or the Dip/Azimuth of the corresponding Great Circles are displayed as labels has been added.

Great circles of selected dips and clusters can now be displayed.

The option to display a Dip Magnitude plot has been added to the toolbar and the Rose tab on the Properties dialog box.

Text

A new Decimate tool has been added to easily reduce log data or create log subsets.

Text Importer

Performance when expanding array elements with large numbers of repeats has been improved. The full 4096 supported import columns are now shown in the grid.

Support has been added for multi-well interval data where the references are in a grid.

Unconventionals

New modules for calculating TOC from NMR Density (shale_toc_from_nmr) and TOC from Uranium (shale_toc_from_uran) have been added to the Processing | Petrophysics | Unconventionals | Shale | TOC Calculations menu.

Well Path

Support for the British Geological Survey (BGS) BGGM 2024 geomagnetic model has been added. As with previous BGGM models, coefficient files are not included in the release and BGS BGGM subscribers can obtain these directly from the BGS.

Xplot

Macro functions included in Xplots can now be selected and edited using the Regression dialog box.

Labels can now be displayed on polygons. These labels can be edited on the Function Maintenance dialog box.

If a background image is used, it is now displayed correctly when the crossplot is split into subplots.

Renaming points and lines now automatically updates the default log/constant names.

Points can now be inserted when the X and Y axes have the same base name.

Selected polygons can now be highlighted using the Highlight Polygon tool. If there are no polygons selected, then all polygons on the crossplot are highlighted.

 

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