Petrel 2013 Release Notes

Petrel E&P Software Platform 2013

Release Notes

Schlumberger Public

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Petrel Platform Release Notes 2013.2

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Contents Petrel 2013 ........................................................................................................................................................................ 4 Welcome to Petrel 2013.2 ......................................................................................................................................... 4 Project Compatibility ................................................................................................................................................ 5 What’s New in Brief....................................................................................................................................................... 6 Structural Framework ............................................................................................................................................... 6 Geophysics .................................................................................................................................................................. 7 Geology ........................................................................................................................................................................ 9 Exploration Geology .................................................................................................................................................. 9 Fracture Modeling ................................................................................................................................................... 10 Well Design ............................................................................................................................................................... 11 Reservoir Engineering ............................................................................................................................................ 12 Studio .......................................................................................................................................................................... 13 Framework................................................................................................................................................................. 14 General ....................................................................................................................................................................... 14 Known Issues ................................................................................................................................................................ 15 Structural Framework ............................................................................................................................................. 15 Geophysics ................................................................................................................................................................ 15 Exploration Geology ................................................................................................................................................ 18 Fracture Modeling ................................................................................................................................................... 18 Well Design ............................................................................................................................................................... 19 Production ................................................................................................................................................................. 20 Well Deliverability................................................................................................................................................... 20 Studio .......................................................................................................................................................................... 20 Distribution and Licensing ......................................................................................................................................... 21 Licensing.................................................................................................................................................................... 21 System Requirements .................................................................................................................................................. 22 Petrel System Requirements ................................................................................................................................. 22 Studio Database System Requirements .............................................................................................................. 22 For Oracle Databases .............................................................................................................................................. 22 For Microsoft SQL Server Databases ..................................................................................................................... 22

Petrel Platform Release Notes 2013.2

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Production ................................................................................................................................................................. 11

Petrel 2013 With this Petrel* E&P Software 2013.2 update release, Schlumberger continues its commitment to improve and innovate the way you work. Petrel allows multi-domain experts to co-create a shared earth model that can be continuously updated as new information is acquired. These Release Notes contain short descriptors for the most significant enhancements, fixed issues, and known limitations as well as system requirements and recommendations. The full set of Petrel 2013 documentation and documentation for any prior Petrel release, can be downloaded from the Schlumberger Information Solutions (SIS) Support Portal.

Welcome to Petrel 2013.2 This release contains a wide range of new features, improvements and fixes, which build upon the three key strengths of the Petrel platform: Disciplines Working Together – Enabling workflows that cross multiple domains Access to the Best Science – Delivering the required science without stepping out of the platform Increased Workflow Productivity – Improving end-user experience

Below is a selected list highlighting some of the more significant improvements included in this release. Structural Framework • Volume Based Modeling (VBM): A new modeling method that complements various legacy methods and uses robust and innovative algorithms for creating horizons in Structural Framework models. Exploration Geology • Module: The Exploration Geology module (Petroleum Systems 1D and 3D, Petroleum Systems Quick Look, and Play to Prospect Risk) is now an integrated part of Petrel; it requires an Exploration Geology license. • Lithology Database: A new set of lithology templates has been added to the Petrel templates for use with the Exploration Geology modules. • Petroleum Systems 1D and 3D: Added the ability to view invasion percolation simulation results and a simplified workflow for ages, facies, and default lithologies. Geophysics • Seismic reconstruction 2D: Defines the geological type of horizons in order to handle unconformities such as erosional surfaces, resulting in chrono-stratigraphic displays of seismic sections. • Seismic Compression: A process to compress ZGY volumes for 3D seismic data, for file size reduction while maintaining data fidelity. • MultiZ (body) interpretation: A new object, which handles seismic interpretation for complex subsurface structures with multiple time/depth values, is now available in Petrel. • Interval velocity maps: The velocity modeling process allows you to create output Interval velocity maps. • New option in Sonic Calibration process: For the generation of a smooth drift curve by using a polynomial fit to honor the knee points.

Petrel Platform Release Notes 2013.2

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Time varying wavelet: Allows you to specify different time ranges or intervals over which a series of wavelets can be used to generate a synthetic seismogram. New option in the Wavelet Toolbox: Calculates an average wavelet from a set of input wavelets.

Fracture Modeling • Geomechanical driver: A new geomechanically-based approach that is based on inverse and forward stress computation for constraining the Discrete Fracture Modeling (DFM). Reservoir Engineering • INTERSECT 2013.1 support: A new connector for INTERSECT is available with this release, providing access to INTERSECT 2013.1 functionality, and additional Field Management strategy options. Production • Production Analytics: New features for analysis of production data added to Petrel, within the combined core license. • OFM Data Connector: Modifications include import well annotations and import completion level data.

Project Compatibility The Petrel platform preserves the value of your historical data. Projects saved in all earlier Petrel versions will load directly into Petrel 2013 without any need for data migration. However, note that, projects saved with Petrel 2013 are not backwards compatible (e.g., cannot be opened) with earlier versions.

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Further information on the above mentioned improvements can be found in the following sections and in more detail in the companion document, Petrel E&P Software Platform 2013 What’s New. Complete documentation for this release, and all prior Petrel releases, is available from the Schlumberger Information Solutions (SIS) Support Portal.

What’s New in Brief The following content contains short descriptions of new features in this release, organized by domain. The companion document, Petrel E&P Software Platform 2013 What’s New, contains more detailed explanations, descriptions of functionality, and workflows for these enhancements.

Structural Framework Short Description The Volume Based Modeling (VBM) horizon method always produces watertight zones independently from the complexity of the model. For complex models, the performance of zone creation has been vastly improved.

QC manager

A new tool allowing QC of the quality of the fault interpretation prior to the construction of the horizon surfaces has been introduced.

VBM: Handling complex fault networks

The VBM horizon method incorporates a set of robust and innovative algorithms, which are designed to enable the construction of structural models incorporating complex fault networks.

VBM: Modeling geological sequences

VBM simultaneously models all conformable horizons as a single conformable sequence, preventing crossovers that commonly occur in thin layered reservoirs.

VBM: Dealing with sparse interpretation data

In the VBM horizon method, the computation of the iso-stratigraphic property field accounts for the geometry of all input data. It will naturally produce horizons that fit all input data points, while preserving the integrity of the stratigraphic column, yielding consistent thicknesses and fault displacements.

VBM: Proportional layering

By using the VBM method, creating a new proportional horizon amounts to extracting an additional surface of the iso-stratigraphy property field.

VBM: Fast model update

The Two Steps modeling workflow includes: • Fast generation and update of coarse scale model, allowing interpretation issues to be fixed. • Refinement and zone creation, once satisfactory quality has been achieved.

VBM: Thin layer handling

The VBM horizon method now allows building thinly layered reservoir models and incorporating all geological zones identified form well data into the stair step grid.

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Feature Performance and robustness improvements

Geophysics Short Description MultiZ interpretation is a new object in Petrel, which handles multi-z interpretation values. This type of object will help to interpret complex structures with single or multiple overhangs, salt domes, reefs, etc.

Interval velocity maps

You can now create Interval velocity maps for an existing velocity model. These output maps can be used for the purpose of QC.

Seismic Reconstruction – 2D

The seismic reconstruction 2D process now allows you to define the geological horizon type in order to handle unconformities, such as erosional surfaces, resulting in chrono-stratigraphic displays of seismic sections.

Seismic Compression

A process launched from the context menu of a ZGY volume will allow you to compress the volume. The compression is a “lossy” method, and will be governed by the compression-noise level that you allow the operation to introduce.

SEG-Y 2D Toolbox

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Scaled Shot points: The Toolbox is now able to load SEG-Y files containing scaled shot point numbers. The integer part of the shot point values are typically located in trace header byte locations 197-201 with corresponding multiplication scalars values located in bytes 201-202. Upon reading SEG-Y files, the integer and the scalar values are multiplied to produce decimal shot point numbers. Cropping: Previously, cropping or restricting the loading time range shifted the section to have incorrect start times. This has been fixed. Zero XY-coordinates extrapolation: Previously, zero coordinates detected at the end of the line were not extrapolated. This has been fixed; zero coordinates encountered throughout the line will be interpolated and/or extrapolated when this option is selected. Fixed issues with reading navigation file layout, cropping output time range, and extrapolating zero coordinates at end of line.

2D lines: min-max amplitude

Min-max amplitude values, which have been scanned or set, are now preserved when saving a project.

Mistie Manager

Fixed issues with selecting multiple layers/columns for copy/paste.

Composite lines

Fixed issues with clearing uncommitted work (2D window): • Missing rubberband when drawing composite line. • Error message when drawing composite after changing to new project.

Keyboard shortcut key (L)

Interpretation window: fixed shortcut key L (select/rotate orthogonal intersection) to be transient; upon completion, functionality returns to prior mode, typically horizon interpretation.

Petrel Platform Release Notes 2013.2

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Feature MultiZ interpretation

Feature Horizon interpretation modes

Short Description Horizon interpretation is now saved when switching between horizon interpretation modes.

Reconstruction 2D

Re-labeled for consistency: • "Reconstruction 2D" label replaces "Restoration 2D". • Stratigraphy types: names are now consistent with Horizon Modeling process.

Domain conversion

Fixed error and eventual crash when writing depth-converted objects to a full disk.

Make Velocity Model

Fixed various issues using “Create New” when there are existing velocity models.

Seismic Well Tie

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Log Conditioning (Behavioral Change)

Petrel Platform Release Notes 2013.2

Usability improvements to present depth intervals and log values during the editions. Additional parameters have been added to the Log Conditioning > draw user interface to show the start and end depth interval and the value under modification during the manipulations.

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Sonic Calibration > Polynomial fit: This option is recommended when the checkshot used for the calibration of the sonic is quite nosy. Polynomial fit correction smoothes the differences between checkshot (time-depth) pairs and the integrated sonic log, estimating a polynomial drift curve honors the knee points without fitting the noise. Synthetic Generation > Time varying wavelet: This tool is useful to address the phenomenon of decrease of frequencies and amplitudes with deeper seismic data. Time varying wavelet may be useful to apply an existing wavelet over different time intervals to generate a synthetic. Wavelet Toolbox > Wavelet Average: Wavelet average is a new algorithm under multi-wavelet methods of the wavelet toolbox. It calculates an average wavelet from a set of wavelets that you select. You can define the length and sample interval of the average wavelet and you also have an additional option to invert the polarity of the resultant wavelet.

Geology Short Description Time series logs introduced in the 2013.1 release were created by a manual workflow: after importing regular logs and inserting and editing the time step attribute in the log attributes spreadsheet, you could then create individual time steps from global time series log operations tab. In the 2013.2 release, a new LAS importer allows you to simultaneously import both regular and time series logs in the same GUI.

Uncertainty analysis in Mapbased volume calculation process

You can now perform uncertainty analysis on surface inputs in the map-based volume calculation which was introduced in the 2013.1 release. The analysis is based on the same principle as structural uncertainty. You have the option of specifying the parameters for structure and property surfaces separately.

Stratigraphic charts

Two new options have been added to enable you to duplicate a column or populate an empty column with the contents of an existing one and to copy a zone and extend the bounding events at the same time.

Well labeling

A new option on the trajectory point gives you more choice on the map window for the placement of labels along the well path in the case of highly deviated and horizontal wells.

Fault modeling

In the 2013.1 release, a restriction was placed on the type of polygons that you can select to convert to faults in a fault model. You can select all the types starting with the word “Fault” to convert to a fault. This restriction is retained in the 2013.2 release.

TDR computation from sonic log

In prior Petrel releases, the time-depth relationship computations from the sonic log could misapply the algorithm and produce misleading one-way time results. In the 2013.2 release, OWT calculated when running the TDR operation now gives the correct value from first intervals to last sampled depth. The sonic log depth sampled in MD will be converted to TVD during calculation, to ensure that the OWT computation produces the correct result.

Exploration Geology Feature Exploration Geology – now a module

Short Description Exploration Geology was previously a plug-in requiring separate installation via the Ocean plug-in manager. From 2013.2 onwards, Exploration Geology is a module, which is included in the full installation of Petrel.

Lithology database

Lithologies are needed to define the facies of the zones or layers of your petroleum systems model. The lithology information will be used by the simulator to calculate generation, migration, and accumulation of hydrocarbons.

Petrel Platform Release Notes 2013.2

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Feature Multiple LAS importer

Feature Invasion Percolation Simulations now visible in Petrel

Short Description You can now view the results of an invasion percolation simulation of a 3D model (simulated in PetroMod) in Petrel.

Separation of “Ages and facies table”

You can now create a chrono-stratigraphic column, define the facies in the facies definition table and connect the data in the Make 1D or Make 3D petroleum systems model process. Petroleum systems processes enable construction of 3D geocellular models in Petrel prior to export to PetroMod petroleum systems modeling software for dynamic forward modeling of geological processes in sedimentary basins over geological time spans. To utilize the Petrel model in PetroMod, it needs ages, and the facies data need to be refined with data such as geothermal, paleo-geometry, etc. The PetroMod overlays that are calculated in the simulator have been re-organized and partially re-named. When you convert the calculated petroleum systems model to a simple grid model, you select the overlays to be converted to Petrel properties. For a complete list with definitions, see the section “overlays” in the online help.

Charge modeling

There were problems with charge runs when using rotated surfaces. This problem, which occurred when working with point or area injection, has been fixed.

Make generation properties

Undefined values, in surfaces, resulted in extreme values for pressure/temperature. This has been fixed. In the model input, it was not possible to define the bottom of the lowest layer. The effect was that the basement was not taken into account. This has been fixed.

1D and 3D model generation

Fracture Modeling Feature New geomechanically-based driver for DFM

Petrel Platform Release Notes 2013.2

Short Description This module is based on iBem3D (Poly3D) engine and aims at computing maps of both natural fracture orientation and density trends from computed stress field using observed major faults (Petrel seismic – structural framework) and observed fracture data. The following lists the various attributes of this new driver: • Computation speed - Forward stress simulation takes less than 3 minutes to compute independently from the fault network complexity. • Handling complex fault networks - The iBem3D (Poly3D) engine, based on the boundary element method, allows handling complex fault networks and fault geometries. • Tectonic stress inversion - A technique that allows recovering tectonic stress inversion characteristics through time and used as boundary conditions for the forward stress simulations.

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Petroleum Systems 1D and 3D

Feature

Short Description • Tectonic stress domain - Introduction of a graphical representation of the stress inversion solution. • Fractures classification - A new process that classifies observed natural fractures regarding their mechanical type. • Fracture density calibration - A new process that calibrates density of modeled fractures against observed fractures along wells.

Well Design Short Description Several issues related to performance and filters of risk manager have been addressed.

Well report

Previously, if more than one sidetrack well was tied into the same main well, generating a well report for all wells could result in a crash. This has been fixed.

Production Feature New Production Analytics

Petrel Platform Release Notes 2013.2

Short Description The Petrel combined core license enables new features including abilities to manually back allocate, visualize completion level data in the well section window, and generate grid and bubble maps of production data. The features of the production analytics module include: • Production Bubble Mapping Process: You can post production bubbles at depth and play through time. • Production Mapping Process: You can generate grid maps for production data and play them through time. • Production Track for Well Section Windows: You can post completion level data in a track alongside log and cross section in the production track for the well section window. • Split Set and Split Set Manager: The Split set and Split set manager allow you to manually allocate well level production to the completion level.

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Feature Risk manager

Feature OFM Data Connector Modifications

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Support Full Flow Path in VFP Simulation

Import Well Location from PIPESIM if the Well Location is Defined in GIS

In well models where the completion depth is above the bottom depth of tubing or any completion tool depth, the flow path from completion depth up to the well head is considered in the same way it is considered for Nodal Analysis calculations. The resulting BHP pressure in the VFP table is calculated in the tubing the same as it is currently calculated in PIPESIM. When sensitizing on ESP in a VFP simulation, you can choose to include a gas separator and apply viscosity correction. Petrel assumes the efficiency is 100%. When importing PIPESIM data to Petrel, if the well location is defined in the PIPESIM GIS component and you select a CRS in Petrel, the well head location is converted to the selected Petrel CRS. Otherwise, the well head location in Petrel defaults to (0,0).

Reservoir Engineering Feature Changes to INTERSECT support in Petrel

Short Description When you install Petrel 2013.2, you have the choice between installing the connector to INTERSECT 2012.2 or INTERSECT 2013.1. The connector is that part of Petrel that creates Field Management strategies and exports INTERSECT simulation cases. The default choice is to install the connector to INTERSECT 2013.1, the newest release of INTERSECT. You can later change the connector by using the Modify option in the Petrel E&P Platform installer.

Correct specification by Petrel of valve pipe diameters may result in changes to the frictional pressure drop

WSEGVALV pipe diameter and cross-sectional area are taken from the device’s inner diameter or the constriction diameter (whichever is the greater), rather than using the WELSEGS-attributes.

Unrecognized summary results are now visible in the Results pane

Unrecognized summary results are now listed in the Results pane, and can be viewed through the Results Charting and Analysis process.

Improvements to the reference valve calculation when converting to simulation design

Completion design operations that make use of the 'physical valves equivalent' attribute – allowing a single device to represent any number of physical valves on export to the simulator – now have all WSEGVALV and WELSEGS items scaled correctly.

Petrel Platform Release Notes 2013.2

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Support Gas Separator and Viscosity Correction in ESP

Import Completion Level Data with the OFM Data Connector: The OFM Data Connector has been modified so you can now import the completion level data from OFM into Petrel. This creates a data association between the OFM completion and the Petrel perforation, which can then be used for visualization and analysis. Import Well Annotations with the OFM Data Connector: The OFM Data Connector has been modified to support the import of well annotations from OFM for posting on rate time plots generated with the Results charting and analysis process.

Studio Short Description Added support for synchronization status of the Well Tops folder in the database tool.

Original CRS

Studio* now stores the Original Coordinate Reference System (CRS) information and it can be retrieved from the Database to Petrel. The value of the Original CRS can be displayed in the Repository Data Table. The following types are supported: • Seismic 3D survey, any folder with 3D data • Seismic cube • Horizon 3D interpretation • Regular surface • Wells • Boundaries • Polygons • Fault sticks • Lines • Fault interpretation • Points • 2D Line navigation • Custom domain objects

Re-parenting of seismic interpretation

The re-parenting of seismic interpretation has been enhanced. You now have the ability to re-parent more than one horizon at a time and to a survey that has a similar geometry (i.e., different CRS in the database). You can also re-parent seismic interpretation to a survey in the database with a greater survey range.

Enable/disable Seismic image during transfer

When seismic data (ZGY/SEGY) is transferred to Studio, you have the option to enable the generation of a time slice that is also sent to Studio. With this option enabled, when the repository is indexed, the seismic cube is represented spatially by a bounding cube and a time slice at the mid-way point. With the option disabled, you will only see the bounding cube.

Support of Raster Logs

Studio will support raster logs. Images will be stored externally and Studio will store the location of these files. Send and retrieve of a well, with these logs, automatically transfer the custom logs under the selected well.

Find

Issues regarding indexing of well user attributes and correct functioning of the measured depth filter have been fixed.

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Feature Well top synchronization status

Framework Feature Color table opacity curve settings

Short Description For objects that support templates and color tables, a new option in the color table editor allows you to switch between linear and spline interpolation for the opacity curve.

Geo-referenced images

In previous Petrel versions, images geo-referenced in latitude/longitude were often inaccurately rendered in the large geographic areas, such as those used in regional exploration workflows. In the 2013.2 release, you can replace latitude/longitude coordinates for geo-referenced images with a user-specified scheme. When rendered in a 2D or 3D window, images morph into spatial correctness by texture-mapping onto tiled grids.

General

Petrel Platform Release Notes 2013.2

Short Description A specific menu entry has been added for the review and consolidation of the project Coordinate Reference System (CRS).

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Feature CRS Consolidation - Restructured Tools Menu

Known Issues The following content summarizes known issues and limitations for this release, grouped by domain.

Structural Framework Affected Feature Volume Based Modeling (VBM) Method

Geophysics Affected Feature

Issue or Limitation

Seismic Compression

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Volume attributes generated from compressed cubes may display cosmetic artifacts along its edges. These edges are typically zones along boundaries of irregularly shaped surveys, muting zones at edges of surveys and zones above sea bottom which in the compressed cube borders consecutive neighboring samples with zero values. WORKAROUND: These cosmetic artifacts can be cropped from view. Alternatively crop the compressed cube prior to generating volume attributes. For compressed cubes intended for more permanent storage, we recommend to (re)generate these using the next release of seismic compression process.

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Petrel Platform Release Notes 2013.2

Velocity cubes and other non-zero mean (e.g., positive only values) data types should be compressed with a high (enough) value SQNR to maintain adequate signal quality.

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Issue or Limitation • Baselap-baselap relationship is not working as expected. It is not possible to explicitly define truncation rules between unconformities: the youngest unconformity is always assumed to be truncating older unconformities. • The stair-step faulting process is disabled when using faults coming from a VBM model. • Eroded horizon surfaces coming from VBM models are not always handled properly in pillar gridding. They may be extrapolated beyond erosion line. • Results are not fully reproducible, especially in areas where there is no input data to control horizon extrapolation. However, differences in volume are expected to be less than 1% in areas where data interpolation is properly constrained. • Zones could present visualization/rendering issues reflected as empty triangles in Interpretation window, Intersection planes and Intersection window.

Affected Feature

Issue or Limitation

SEG-Y 2D Toolbox

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Scaled Shot points: shot point scalar value is currently limited to 1,0000. This will be increased to 10,000 in the next release. WORKAROUND: Load corrected SEG-Y files using File > Import SEG-Y Seismic data (*.*).

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Upon clicking Define byte location, the Message log shows "Unexpected error occurred when resizing BinatryHdrGridview Exception: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index". This message can be safely ignored. This message appears when working in a Windows environment where text size has been set at values other than 100% of normal size. WORKAROUND: Set Windows text size to 100% of normal size via Control Panel > Appearance and Personalization > Display.

MultiZ interpretation

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WORKAROUND: To force the release of the memory, you need to save your project and restart Petrel. •

MultiZ interpretation may, in some circumstances, render slowly. If you are experiencing a performance degrade, recreate a MultiZ interpretation (convert it to polygons, insert a new MultiZ interpretation and append MultiZ interpretation from polygons).

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MultiZ interpretation is not yet supported within the Studio Environment.

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The Structural and Fault analysis license enables the Structural Analysis tab for MultiZ interpretation objects. The functionality within this tab is not supported for these objects.

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Seismic operations run from the Operations TAB of the MultiZ Interpretation cannot be undone.

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MultiZ interpretation projected point can become disconnected with the segment on the section (e.g., inline) while editing it on the crossing section (e.g., crossline).

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The restrict mode is not available in the 2013.2 release. WORKAROUND: Use Flip in front of/behind plane instead.

Petrel Platform Release Notes 2013.2

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Create triangle mesh (Meshing) process doesn’t release all the memory it used. Depending on the memory available and the size of the input, the system can run out of memory after several mesh computations.

Affected Feature SEG-Y to ZGY converter

Issue or Limitation Certain ZGY cubes are being created with checker board-like artifacts. These artifacts can be observed to be 64 inlines wide and some multiple of 64 crosslines long. This bug is triggered when 64 full inlines do not fit in 1Gb of memory, which can be the case for cubes with very long inlines, or very large cubes with large inline dimensions.

Seismic Well Tie

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Petrel Platform Release Notes 2013.2

The new version of Seismic Well Tie uses the Petrel domain conversion algorithm, while the old version used a proprietary algorithm; hence, small numerical differences are to be expected. For every study, a temporary folder and objects will be created and stored under the Input tree; they will be located under the Well > Study Folder > Visual. This folder should not be deleted. When wavelets created in the Wavelet Toolbox are copied (using Copy/Paste), the parameter settings for this new wavelet cannot be edited. Deleting any required input data belonging to the Study from the Input tree will close and delete the current study. All the objects saved from the study will still be preserved in the Input tree. If a seismic, log or wavelet used in an SWT study is deleted, the SWT settings will be auto-populated with the next available object with the same template. Deleting the Well Section Window study will delete the information inside this study and temporary objects created for visualization. All the objects saved from the study will still be preserved in the Input tree. When wavelets are created using the statistical extraction method, the history is being tagged incorrectly; it will show those wavelets as the extended white method.

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WORKAROUND: When defining the Area to be loaded, specify the endcrossline number to create a cube geometry with twice the amount of crossline numbers. The exact number of crosslines to be added is dependent on several factors (crossline_count *sample_count *64*size of float), but twice the amount of original crossline numbers will certainly suffice. This extra geometry size will not consume additional disk space. After loading completes, crop the ZGY cube to exclude the additional (empty) crosslines.

Exploration Geology Affected Feature General

Petroleum Systems Quick Look General Make generation properties Make generation properties

Imported PetroMod overlay: Gas content Templates and units for "Temperature/Heat capacity" data

There are differences in the definition of gas content in Petrel (mass/mass) and PetroMod (volume/mass) resulting in the wrong visualization of the overlay. Do not use this overlay. Petrel and PetroMod used different templates and units for "Temperature/Heat capacity" data. When PetroMod overlay data was imported using "Convert to simple grid” in the 2012.1 release, units were incorrectly converted. This is still an issue when you open overlays which were imported using 2012.1 versions, even with the 2012.2 or 2013.1 version installed. WORKAROUND: Re-import any overlays that were previously imported.

Fracture Modeling Affected Feature Large 3D grids

Issue or Limitation An observation grid (reservoir grid) with more than one million cells will take approximately 10 minutes to compute during the Generate Fracture Driver process.

Fold related fractures

Models with fold-related fractures cannot give coherent results since the methodology is based on fault-related fractures.

Petrel Platform Release Notes 2013.2

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Play Chance Mapping

Issue or Limitation After copying/pasting a Play Chance Mapping, Prospect Assessment, Prospect Summing, Petroleum Systems 1D, or Petroleum Systems 3D object on the Input pane, the “Edit existing” area in the process dialogs is not updated immediately, i.e., does not show the copied object (only while the process is open). When opening old projects of Petroleum Systems Quick Look from 2009 and 2010, accumulations cannot be viewed with the intersection plane. Re-run the Charge process with the 2013 version. Rotated surfaces which were entered and resulted in an error message, when removed from the dialog still produce an error message. When the base source rock map is not defined (e.g. holes due to fault displacement), it results in extremely high maturities and generation / expulsion masses. Ensure holes in the map are filled, for example by using the depth values from fault. Discrete surfaces are not supported by Play Chance Mapping, using a discrete surface as a property surface can lead to a Petrel crash. WORKAROUND: Use discrete surface attributes.

Well Design Affected Feature Well plan display in an intersection window Converting a simple proposed well to an advanced plan

Well path creation with non S-3D profile

Plan grid convergence values

Transferring data over different index ranges

Petrel Platform Release Notes 2013.2

A simple proposed well is created with Well path design by manually digitizing the design points. When converting a simple proposed well to an advanced plan, the design points will be converted into Station points in the advanced plan. • If you click Go to surface or add any curve section to the top in Well path designer, for the Station points, only MD, INCL and AZIM values will remain unchanged during calculation, but X, Y, Z and TVD will be recalculated. • If the last point of the simple well (TD) is above MSL, the conversion will fail due to TVD and MD being referenced to MSL instead of to Kelly Bushing (KB). WORKAROUND: Edit settings for the proposed well by changing from simple well to standalone well with appropriate KB value. When assigning a branch to a main well during the sidetrack creation workflow, the trajectory of the main well (parent) and the branch (sidetrack) must be within 1m. Otherwise, the assignment will fail. The system automatically converts any non S-section (profile) into an S-3D profile when you click on that section in a 3D window and in well path design Pick/Dragger mode. The conversion will display in the Well path designer spreadsheet as empty rows. Those rows will be filled up when modified with the dragger. WORKAROUND: Click the Undo button and return to the Well path designer. In the 2012.1 release, if a project was set up with mixed units, the grid convergence for the plan might be calculated incorrectly. This issue was fixed in the 2012.2 release. However, if a project is saved with the 2012.1 version and is opened with any newer version, an incorrect grid convergence will occur. WORKAROUND: To correct this, you must trigger a plan recalculation by editing the plan (with Well path designer, dragger or Inspector) in a 3D window. For some particular data sets, when one incoming log in the server contains multiple passes of data over different index ranges, if the deeper data range is downloaded before the shallower or earlier data range, the shallower or earlier data might be skipped during data transfer. For more details, see the online help.

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Associating a side track to a well

Issue or Limitation If an Intersection window is associated with a curved surface, the display result of certain plans might be incorrect.

Production Affected Feature Flow correlation data matching

Issue or Limitation When the simulation fails to converge, the optimization algorithm will stop rather than continue solving the remaining algorithms. The user must remove the failing flow correlation and rerun the case.

Well Deliverability Affected Feature Different TVD for Deviated Wells in Petrel vs. PIPESIM

Studio Affected Feature

Issue or Limitation

Re-parented 3D interpretations Displayed in Find

In Find, when you display an indexed 3D interpretation that was re-parented to a survey with a different geometry, Find only displays the survey’s bounding polygon.

Petrel Platform Release Notes 2013.2

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Issue or Limitation Petrel and PIPESIM use different algorithms to calculate true vertical depth (TVD). As a result, when you import a deviated well from PIPESIM to Petrel, the TVD values will be slightly different in the two applications. Petrel imports Measured Depth (MD) values exactly as they are in PIPESIM, but Petrel uses a more advanced algorithm that allows for curved paths. True vertical depth is then derived from the MD values. WORKAROUND: If you want your TVD values in Petrel to match the same well in PIPESIM, after importing the well from PIPESIM, you can export the well deviation data, then manually correct (key-in) the TVD values in the deviation file, then re-import the deviation values. This effectively forces the TVD values rather than deriving them from the MD values.

Distribution and Licensing The Petrel 2013 release is available by download using the appropriate links on the Schlumberger Information Solutions (SIS) Support Portal. A user account is required on the portal. If you do not already have a user account, you can register to access the portal at http://support.software.slb.com.

Licensing A Petrel dongle and a valid license are required to run this release. License files prior to Petrel 2012 need to be updated. Petrel licenses now incorporate two important dates, the maintenance expiry date and the license expiry date. You can verify the validity of your license, as follows: FEATURE Petrel_01220255_MAAAdLyku/aUAslbsis .

The license is valid to run Petrel up to the license expiry date; it allows you to run any Petrel version that is released before the maintenance expiry date. All license inquiries should be made to your SIS account manager, but note that you will normally be contacted by Schlumberger before your maintenance expires.

Petrel Platform Release Notes 2013.2

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Where • is the maintenance expiry year and month • is the license expiry day, month, year • is the number of licenses

System Requirements Petrel System Requirements Below are the current brief system recommendations for Petrel and Studio. For further information, please refer to the Petrel 2013 Installation Guide.

Minimum

Recommended

Microsoft Windows 7 (64-bit, SP1)

Multiple high-resolution monitors

Other Required Software Microsoft .NET Framework 4.5 and 4.0 Flexera™ FlexNet Publisher®

Studio Database System Requirements For Oracle Databases Minimum

Recommended

Red Hat® Enterprise Linux® 5.5 - 5.8 or 6.X (64-bit) AMD64 or Intel® EM64T dual quad-core processor 16 GB memory

Red Hat Enterprise Linux 6.2 (64-bit) AMD64 or Intel EM64T dual six-core processor 32 GB or greater memory

Other Required Software Oracle Database Enterprise Edition 11.2.0.3 Oracle Locator or ArcSDE 10 SP3 (64-bit)

For Microsoft SQL Server Databases Minimum

Recommended

Windows Server 2008 R2 SP1 (64-bit) or Windows 7 SP1 (64-bit) x64 quad-core processor 8 GB memory

Windows Server 2008 R2 SP1 (64-bit) or Windows 7 SP1 (64-bit) x64 dual quad-core processor 48 GB or greater memory

Other Required Software SQL Server 2012 Standard Edition SP1 with Cumulative update package 2

Petrel Platform Release Notes 2013.2

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Quad-core processor (best with fast clock speed and large cache) 16 GB RAM memory Fast rotational speed hard disk (10,000–15,000 rpm) or solid state drive NVIDIA Quadro® K2000 or NVIDIA Quadro K2000M graphics card 1,024 × 768 screen resolution with 32-bit colors

Microsoft Windows 7 Enterprise or Ultimate Edition (64-bit, SP1) Dual quad-core or hex-core processor (best with fast clock speed and large cache) 64 GB RAM memory Fast rotational speed hard disk (10,000–15,000 rpm) or solid state drive (300 GB) NVIDIA Quadro K5000 graphics card