پلت فرم کامل مهندسی نفت | Petrel 2022.3 + Plugin
Finding, characterizing, and exploiting new and existing reservoirs is increasingly complex. To overcome these challenges, we must continually improve and innovate the way we work. With the Petrel E&P Software Platform, Schlumberger revolutionized the oil and gas industry by bringing disciplines together with best-in-class science in an unparalleled productivity environment. Our commitment to Petrel resulted in dramatic strides forward in the way we develop and deliver a software platform, and with the Petrel 2022 Platform and update releases, we continue to deliver on our promise of better integration, deep science, and productivity. Today we support an engineering team unrivaled in size and expertise, empowered by the Ocean software development framework. More than ever before, we are positioned to help you develop critical insights into reservoirs throughout the oilfield lifecycle. With this Petrel E&P Software 2022.3 major 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.
New features and enhancements on Petrel 2022.3
The following content contains descriptions of new features and behavioral changes in this release, organized by domain.
• Directional disk cache: Fixed an issue where the directional disk cache was not being applied and was being toggled off automatically.
• ZGY Tool: A tool that enables conversion between OpenZGY and OpenVDS data is now available. To launch the tool, right-click a ZGY file in the Input pane.
• Live collaboration: There are cosmetic changes to the Collaboration manager. All information is now presented in a single pane and icons are used to launch tasks. The new 'Updated' column shows when a session was last accessed.
• Live collaboration: Improved performance when creating and joining sessions that contain 3D interpretation data.
• Simple domain conversion: Disabled the input of cropped 2D lines for simple domain conversion because they did not work correctly. It is recommended to domain convert the full 2D line and then crop the result.
• QI Machine Learning: It is now possible to use well point data attributes as target or training inputs in the QI ML
Training and Prediction dialog boxes. Well point data and well logs can be used together within the same ML model.
• QI Machine Learning: The interpolation method of the input and output logs in the QI ML Training and Prediction dialog
boxes has been updated. They will be interpolated based on the input log or point data with the least number of points.
• 2D forward modeling: A fix has been implemented for Seismic Line model, to refresh the horizon table when a horizon interpretation, on the selected seismic line, is added or removed in the Input pane.
Seismic well tie
Wavelet Toolbox: There is a significant performance improvement in new wavelet creation time in projects that contain hundreds of wavelets.
Drilling structure: Fixed crash that occurred when deleting a Drilling structure without slots.
Survey export manager: You can now export surveys from multiple wells at the same time, with a wider range of parameters and options to customize the export.
Well Data Browser
Multi-level sorting: You can now sort your Tops/Zone data inside Well Data Browser by more than one column. You can create and apply a priority list of up to three levels.
• Stairstep gridding: An enhancement has been made to optimize the performance of the stairstep gridding process. For certain model configurations, typically large models, this leads to very significant reductions in runtime. To benefit from those changes, you must clear the Create regions all zones property check box. It is also recommended to unselect all, or minimize the selection of, fault block boundaries.
• Fault types: The Fault framework and Model construction processes have been enhanced to add further control on the resulting fault throw. You can now specify a type for individual faults (normal, reverse, or default). Selecting this
option will add an additional correction to the calculated throw where reversals occur. This functionality helps you to maintain a consistent throw sense in your structural models, particularly in low throw areas of the model.
• Mud weight prediction: There is a new option to compute stochastic limits from a simulation case ensemble. Acceptable breakout width can be a function of well inclination.
• Stress calculator: Support for computing percentiles from a simulation ensemble has been added.
• Subsurface to drilling integration: The MEM upload feature is now available in the same enriched DELFI process as the formation data upload.
• Improve completion set retrieval: Retrieving a well from Studio containing a single completion set, as a new well, or into an existing well with no completion data, will now set the retrieved completion set as Active in the active completion scenario. This will help prevent issues with visualizing the transferred completion data in Petrel.
• Default business project quality attribute: Fixed an issue where the default business project tag would not be persisted when set in the Petrel system settings.
• Studio steps in the Workflow editor: Fixed an issue in the Workflow editor where retrieving a well top collection from Studio and subsequently retrieving all child well tops from this collection would cause an error when saving the project.
• Data transfer via command line: Fixed an issue where running a studio transfer from a Petrel project via the command line syntax would not release the .lock file for the project.
• Project opening: Stability during project opening has been improved by adding a guard to mitigate issues that could lead to a crash when connectivity to the disk location where the project is stored is lost.
• Tool palette: Fixed a crash that occurred if you used the Tool palette between two screens with different DPI settings.
• Polygon with missing shape: Fixed an issue where Petrel crashed when trying to transfer a polygon with a missing or non-existing shape through Reference Project Tool.
• Sort by name: Added support for 'Sort by name' as a workstep which enables you to automate sorting objects within a folder based on their name.
• Auto color all: Added support for 'Auto color all' as a workstep which enables you to automate applying auto color to all objects in a folder.
• Point set attribute to point set: 'Point set attribute to point set' work step now correctly assigns the template of the attribute point set to the output point set. Previously it assigned the domain of the parent point set as the template of the output point set.
• Mesh probes:
• There may be an error when converting a mesh probe made from multi-z data into a seismic cube. This is best checked by playing converted timeslices through the original multi-z data to check that the conversion is correct.
• There will be an error when extracting geobodies from a volume mesh probe made from seismic horizons or surfaces that have holes in them.
• Horizon probes: Horizon probes use an on-demand view which is not cached when the project is saved. Therefore, on reopening a project that contains a horizon probe, the first time the probe is displayed, the system must resample the surface/horizon. For large surfaces, this can take a considerable amount of time. You may wish to close the window that shows the probe before you save the project or press Ctrl when opening the project (this opens the project with no windows open).
• Meshes: You cannot create an editable mesh from 3D interpretation data if there are gaps between interpreted points, for example if you have interpreted on a cube with an increment greater than the survey increment. You can resolve this by either interpolating the data or converting to a surface.
• Workflow Editor: The Output fields in the Volume attributes process in the Workflow editor are reset to its initial default state when a workflow file is imported in Petrel. It creates limitations to the export and import workflow.
Seismic Well Tie
Depth seismic calibration study:
• A Depth seismic calibration study with only bulk shift applied created prior to Petrel 2019.2 gets the wrong depth correction values when the project is upgraded. You must open the Seismic well tie Tool Palette, check the bulk shift, remove it and apply the same bulk shift but with the opposite sign.
Workaround: Open the Seismic well tie Tool Palette, check bulk shift, remove it and apply the same bulk shift but with the opposite sign.
• To add the bulk shift value in the Well Tops spreadsheet, depth correction value, after the project upgrade for all depth seismic calibration studies created prior 2019.4, you must check that the Align points option is applied in the Seismic well tie Tool Palette. If the Auto save all option is used to create a DDR log on the Output tab of the Seismic well tie dialog box, it does not activate the Set active DDR option. To make it active, click Save next to the DDR option.
• Map window: Using a color filter on a surface in the Map window is not supported. It is recommended to use the 2D window instead.
• PWD data load of user attributes: It is not possible to load point well data with user attributes that have empty cells in the last column. Undefined values can be included as a user-defined number (string "", date: NULL).
• Make/edit surface in Workflow editor: $ variables used under the Keep wells in zones option in the Well adjustment tab are replaced by default values when you run a workflow created in Petrel 2022.2 (which allows the use of $ variables) in older Petrel versions (which do not allow the use of $ variables).
• Discrete property templates: For projects saved in Petrel 2021.x and then opened in Petrel 2022.x, there might be duplicate sequence stratigraphy templates in the Discrete property templates folder in the Templates pane. These templates are Depositional trend, Aggradation trend, Grain size trend, and System track.
• Inter-zone layer statistics: Fixed an issue with incorrect depth values for point well data generated from inter-zone layer statistics for projects in Field unit systems.
• Contour lines disassociated from a surface: In some cases, when a surface is rotated, the contour lines can be disassociated from the surface after running a workflow. This issue is currently under investigation.
• Well Data loader - user defined well attributes: User attributes loaded with the Well data loader are assumed to be in SI unit in the source file. This can lead to data being converted incorrectly during the import process. Until the issue is fixed, you must manually convert user attributes to SI units in the source file.
• Custom well symbols: Custom well symbol size must be in multiples of eight pixels per row. Symbols that are not a multiple of eight pixels per row will not display in the 2D window or 3D window.
Well Section Window
• Well tops: When changing the name of the interpreter with highest preference in the well tops interpreter filter, the well top will no longer display even if interpreter preference is not enabled. Toggling the well tops off and on will refresh the display.
• Well headers: Fixed an issue with well headers misaligned when a window is resized with the magnifying glass and percentage zoom.
• Style tab for depogrid properties: Style tab edits for depogrid properties are not preserved if the project is opened in 2018.1. Default settings apply in Petrel 2018.1 and the Style tab is not available.
• Custom templates in the Well Section Window: Surfaces cannot be displayed in the Well Section Window when using custom templates inside the Well Section Window.
• Well correlation: Using Create/edit points tool clears all point attributes values. When you insert new points or edit the existing ones using the Create/edit points tool in the Well section window, the point attribute values are cleared.
• Wells: Custom well symbols must be a multiple of eight pixels per row. Symbols that are not a multiple of eight pixels per row will not display in the 2D or 3D window.
• Customize well label settings for wells in sub-folders - known issues due to backward compatibility from 2021.2 to 2021.1:
• When the well label's position is set to a surface on the well-folder level, when the project is open in an earlier Petrel version (2021.1) in a project without the surface, the well label won't be shown because the position cannot be defined due to the missing surface, unless you update the Wells main folder's settings.
• When the font size is bigger at the well folder level than on the Wells main folder level, in an earlier Petrel version (2021.1), all well labels in the project are displayed with the bigger font size. Workaround: Update the settings of Wells main folder.
• Well tops calculator: When using the well tops calculator within the Workflow Editor, the MD value of the well tops will not change even if the calculation would normally overwrite this value. Outside of the Workflow Editor, this behavior is working as expected.
• MD values of well tops: When using the Well tops calculator in the Workflow Editor, the MD value of well tops will not change even if the calculation would normally overwrite this value. Outside of the Workflow Editor, this behavior works as expected.
• New Workflow editor commands: Some of the new Workflow editor commands introduced in Petrel 2020.2 and 2020.3 do not appear in workflows when the project is opened in Petrel 2020.1. If you save the project in Petrel 2020.1, the workflow is overwritten and is completely empty when the project is reopened in Petrel 2020.2 or later versions. Affected commands are:
• Convert well tops to isochore points
• Add/update zone log
• Insert new well tops attribute
• Continuous well tops attribute operations
• Discrete well tops attribute operations
• Get/Set well tops attribute
Reservoir and Production Engineering
• User edits with FM Strategy: If you have created User Edits for Field management strategy prior to Petrel 2018.1 and they contain nodes related to region mapping, they must be updated to match the new node names.
• EOR Surfactant workflows: In INTERSECT 2019.1 and later, the surfactant workflow is compatible with black oil simulation with oil, water, and gas defined.
Dual porosity, compositional, API tracking simulation, and J-function are not supported with surfactant. Refer to INTERSECT Technical Description for a detailed compatibility list.
• Initial conditions process for depogrid: The Initial conditions process is not supported for depogrids in this release.
• Depogrid INTERSECT cases do not support PINCH: INTERSECT does not currently support the generation of connections across pinched-out layers (PINCH keyword in ECLIPSE) for unstructured grids such as depogrids. Pre- release testing suggests that the material impact on the simulation is limited when realistic property distributions are used.
In a structured grid, pinched-out layers either represent layers of zero-thickness cells or represent cells that have been made inactive because their overall cell thickness or pore volume is less than the specified threshold value. The presence of a layer of inactive cells would normally prevent flow from crossing between the active cells immediately above and below. So, you can turn on the option within the simulator to automatically generate non-neighbor connections that allow fluid to flow between these active cells.
However, in a depogrid you cannot have cells of zero thickness. In addition, we tested the impact on the simulated reservoir flows across cells made inactive with pore volume cut-off values on a selection of synthetic and client models that contained the thin layers and flat erosions. While you can create flow barriers in synthetic examples with constant reservoir properties, when representative property distributions were used, unrealistically large pore volume cut-off values were required to see a material flow barrier.
• Case conversion – Convert to INTE convert cases that use INTERSECT Development Strategies to cases that use INTERSECT Field Management strategies. This is a pre-commercial feature, and has some limitations in this release. It can convert many cases, but you may encounter some problems.
Most types of cases can be inserted in the Input case field. Select the type of case that you want to convert the input case to. Where check boxes are disabled, there is no supported conversion to that case type. The selected case types determine the new cases that result. Petrel may generate intermediate cases during conversion, but unless these case types were explicitly requested they are deleted before conversion finishes.
Here are some hints to help you overcome the issues you may encounter:
Many cases convert without problems – if conversion errors occur, error messages appear and the case types that you selected may not be created. You can still achieve the conversion you want by isolating the problems, making changes to cases, and re-running the conversions.
To do this, run the conversions in stages. For example, if you are starting with an ‘imported’ case (an ECLIPSE deck managed by a Petrel case), and you want to convert this to an INTERSECT Field Management case, Petrel does the following conversion stages in sequence, for a single use of the Convert Case dialog box:
1. Conversion of the ‘imported’ case to a ‘modeled’ ECLIPSE case (this was called Convert to Petrel case in Petrel 2017).
2. Conversion of the ‘modeled’ ECLIPSE case to an INTERSECT Development Strategy case.
3. Conversion of the INTERSECT Development Strategy case to an INTERSECT Field Management case.
Instead, do each of these three conversions separately, using the Case Convertor dialog box each time. After each conversion, try to export and run the case that was just created.
If you see errors at any stage, or simulation results that do not match, then try to resolve these issues first (by either modifying the input or output case).
Where there are problems with conversion (2), it can be helpful to run the INTERSECT Migrator directly on the exported ECLIPSE case (outside Petrel) to check if the same problems are seen.
Conversion (1) can create ECLIPSE ‘user keywords’ in the converted case, these are a common cause of conversion problems.
Conversion (2) can create INTERSECT user edits in the converted case, these should be the INTERSECT ‘equivalent’ of the user keywords in (1).
Conversion (3) can also create INTERSECT user edits in the converted case. These should mostly be the same as the user edits in (2) but with some different IXF node names, caused by different naming formats between DS (ECLIPSE format) and FM (full Petrel entity names). It may be possible to correct some types of error by editing the generated user keywords or user edits.
Some known limitations in this release:
• Type (2) or (3) conversions are not supported for:
• Restart cases
• Cases containing Initial Condition Sets
• Cases with grids that cannot be reasonably accurately represented in Petrel EGRID format.
• Type (2) conversions for cases containing user keywords are not supported for:
• Initialization cases (in other words, no Development Strategy).
• Cases with user keywords affecting grid geometry.
• Type (3) conversions are not supported for cases that have Development Strategy schedule keyword rules containing COMPSEG(S/L).
Workover Candidate Recognition and Validation
Completion-level analysis: If completion-level analysis is performed in Reservoir quality vs production, then the completion-level Reservoir quality indicator (RQI) and Production performance indicator are not displayed in the Underperformers summary, Problem well summary, or Candidate wells summary. Only well-level information is currently shown in the summary steps.
Underperformers summary, Problem well summary, or Candidate wells summary. Only well-level information is currently shown in the summary steps.
RE Extension Suite
For a detailed list of known issues related to the plugins in RE Extension Suite, please refer to the plug-in release notes accessible through Petrel Help.
Structural framework modeling
• Fault modeling – 2018 and later versus previous versions: Framework faults modeled with previous versions may differ from faults modeled with the new fault framework modeling algorithm, even though the same parameters have been used. Any derived output from fault modeling is also expected to change. To minimize such differences, the pre-2018.1 framework fault can be converted into points and assigned as input to the new fault model.
• Fault modeling – Fault extrapolation distance: Depending on the fault shape and dip variations, the extrapolation distance might not be isotropic.
• Fault modeling – Fault truncation editing: Fault patches can only be truncated when the corresponding intersection line entirely disconnects the fault patch. A truncation rule specified in the Framework fault modeling process which cannot be applied will not be automatically set to none. In other words, the fault relationship table will be inconsistent with the Framework faults.
• Model construction – Filtering of stratigraphic model input data: The filtering of stratigraphic model input data could be performed for selected faults at specific distances in the horizon modeling process prior to Petrel 2018.1. This is now handled by filtering attribute generation in the Horizon clean-up process and attribute consumption in the Model construction process. Bulk fault filtering (one value for all faults but for selected input) is still possible in the Model construction process.
• Model construction – Incorrect dip-trend extrapolation along faults and at model boundary: Without enough data to constrain horizons close to faults and the model boundary, those horizons can present an incorrect shape, for example in narrow fault blocks where the input data has been filtered. The editing of filtering parameters (edit attribute, reduce bulk filtering) and manual addition of new unfiltered data can reduce these effects.
• Model construction – Model faults versus Framework faults: Model faults resulting from the Model construction step are re-meshed versions of the framework faults. Depending on the change in mesh resolution, model faults may have a different shape and no longer explicitly match the fault tops used in fault modeling.
• Model construction – Spikes or bubbles in non-refined horizons: Non-refined horizons extracted from the stratigraphic function can in some cases present spikes or bubbles. These artifacts can often be related to inconsistent stratigraphic input data (very noisy interpretation, omitted faults, competing data, and other anomalies). Such inconsistencies are not necessarily present in the input data corresponding to the horizon where those artefacts are observed. These inconsistencies may be derived from any other input data for the affected conformable sequence.
• Model Construction – Enable air interpretation input data option: Fault activity has an impact on the behavior of the Enable air/ground interpretation option. Air interpretation input data will not be taken into account across fault activity limits.
• Model refinement – Degradation of refined versus non-refined horizons: Where the non-refined horizons (from the Model construction process) are far away from the corresponding input data, issues can occur during the refinement of those horizons. In a setting where one or more refined horizons are snapping to the input data, but intermediate horizons do not have any input data to snap to (for example, well-based horizons), refined horizons may cross even when the Enforce consistent zone thickness option is activated. Where the horizon input data contains uninterpreted areas, models will snap to the data where interpretation is present and not in those areas where no interpretation has been generated. This scenario may also result in horizon irregularities.
• Model refinement – Keep only blocks: The Keep only blocks with input data option in the Model construction process is not compatible with the Depospace calculation process and with the Structural gridding process when using the stratigraphic layering type.
• Depospace calculation – Overlapping zones or gaps in depospace: Unbalanced structural models due to inconsistent fault/horizon cut-off lines can result in overlapping areas or gaps in depospace view. Overlaps can be seen in the mesh view of the zones.
• Depospace calculation – Optimization: Depospace performance optimization per conformable sequence (pre-2018.1) is currently not compatible with the underlying stratigraphic function structure and depogrid, and has therefore been disabled.
• Depospace calculation – Geodesic distances: The current depospace calculation uses a vertical mapping step to flatten the conformable horizons, and consequently geodetic distances may not be preserved in certain cases.
• Depospace calculation – Isolated fault blocks: Zones identified as isolated fault blocks are not handled in Depospace. To remove isolated fault blocks, at least one data point must be added into each block.
• Workflow editor using processes with saved parameters: When parameters are saved but not run in the structural framework processes, they are correctly consumed by the corresponding Workflow editor steps. However, modified parameters in the Workflow editor are not synchronized back with the main process. When replicating models from a base case, also consider that the following parameters will revert to default values: the Fault Activity tab in the Model construction process and the vertical extent and apply boundary conditions sections in the Depospace calculation process. A manual initialization may be required in cases where these parameters are modified from the default.
• Depogrids in multi-sequence models: For depogrids built from structural models including non-conformable horizons (erosion, base, or discontinuity), small gaps or interpenetrations may be observed locally between grid cells across the unconformity. These may create small-scale localized artifacts. The impact on downstream property modeling, volume computation, and reservoir simulation has been assessed as low.
• Depogrids with a lateral resolution different from the parent structural model: It is recommended to build a depogrid at a similar lateral resolution to the parent (refined) structural model. Issues may be observed when those resolutions significantly differ. In particular, small-scale localized mismatches between the depogrid horizons and the structural model horizons may be observed when the grid resolution is finer.
• Depogrid layering issues in certain cases of high aspect ratio cells: The distribution of the layers within a zone may not strictly be proportional in certain cases of grid cells with a high aspect ratio. The extreme case is self-intersecting cells that may locally be observed in the grid (close to faults or unconformities).
• Depogrid cell centers: The computation of the depogrid cell centers may result in center points located outside the cells in the rare cases of collapsed or self-intersecting cells. This can have a minor impact on the mapping during property upscaling or locally perturb the transmissibility calculations. Low impact is observed at the reservoir scale.
• Depogrid simulation with INTERSECT 2020.4: The consumption of anisotropic grid permeability in INTERSECT 2020.4 only is based on an incorrect reading of the local grid axes during simulation initialization. This will generally have a minor impact on simulation results when the gridding direction is aligned with the rotation angle of the structural model. The INTERSECT service option 'pre_2020.4_perm_tensor_axes ' is available to revert the local axis consumption to the correct pre-2020.4 behavior. The correct behavior is automatically applied from INTERSECT 2020.5 onwards.
Enriched workflows in the DELFI Petrotechnical Suite
Fracture modeling: The Oda and Oda corrected methods are available for Discrete Fracture Networks. The Flow based method is not available on Petrel PTS.
• VISAGE INTERSECT coupling: The pore volume updating of the fracture model can be unstable for large pore volume changes causing convergence issues in the INTERSECT simulation. In this case, you are advised to turn off the pore volume updating of the fracture model.
• Pore volume updating with LGR: Two-way coupling with pore volume updating with LGRs requires the LGRs to match exactly, be of regular IJK shape, and to not have an irregular polygon boundary.
• Quick MEM: Does not support LGRs.
• Mud weight predictor: Does not support LGRs.
• Geomechanical grids: LGRs are not supported for grids that contain bad cells.
• Reporting of Volume calculation using overlapping boundaries: When (3D) Volume calculation and Map-based Volume calculation are run using overlapping boundaries, the total/net bounded volume (using Union relationship) may differ negligibly in Petrel 2022.1 compared to prior versions. This is due to a small change to improve the reporting functionality and accuracy.
• Data analysis settings in MIP objects: Currently only single variogram structures and global facies fractions are captured in MIP from data analysis. Proportion, probability, and transformation curves are not stored in MIP.
• MIP object unit dependency with RPT: It is not possible to transfer MIP objects between projects if the XY and Z units if the Working and Background projects are not the same.
• Uncertainty and optimization - Trend modeling: 2D discrete Trend modeling process is not restored in the Uncertainty and optimization process when its output is used as input in a process defined in a case. Only discrete 3D trend modeling is listed in the Uncertainty and optimization workflow. 2D trend models can be added to the workflow through Edit workflow in Unceratinty and optimization process.
Depogrid support workflows: The following property modeling processes/methods/options are not available for depogrids:
• Zone correction option in Well log upscaling.
• Multi-point simulation with patterns object method for discrete properties.
• Create variograms from properties in Settings.
• More tab for continuous properties.
• User-defined object for 3D depogrid properties data type.
• Store and populate the contact option in the Contacts process.
Petroleum Systems Modeling
• 2D extraction from 3D model: When you display a property, and show the default or more cell boundaries (horizons and vertical lines), and then turn on a different property, the cell boundary lines are no longer visible.
Workaround: Rotate the model to make them reappear.
• Import 3D input model from PetroMod to Petrel: Take care when importing models that contain layers which were completely deposited and eroded because the number of sublayers (at present day) does not match the number of created horizons.
Workaround: The top horizon of a layer, which was completely deposited and eroded, must be assigned manually in the Create 3D model process after importing the model. Note that the naming convention of that horizon differs between Petrel and PetroMod.
• Extract and export 2D interpretation from seismic lines: Extract and export 2D interpretation from seismic lines does not support cropped lines. Workarounds:
• Use the uncropped line for the extraction and export.
• Convert the cropped line to 2D seismic (right-click on the line, then select Convert to 2D seismic in the shortcut menu) and right-click the resulting 2D seismic line to access Extract and export to PetroMod.
• Create 3D model Map-based mixing: Map-based mixing does not work for models that contain erosion events when facies are assigned from the table. If lithology mixing ratios are defined from grid properties and erosion is to be modeled at the same time, the simulator reports that some elements have no lithological information. This is because the mixing ratio property is not defined for the missing elements (due to erosion).
1. Export the model to PetroMod.
2. Convert cube data to maps.
3. Fill in any undefined values using the map editing tools in PetroBuilder 3D.
Petroleum Systems Quick Look
Petroleum Systems Quick Look lithologies not available to petroleum systems modeling outside of PSQL: Petroleum Systems Quick Look (PSQL) lithologies are generated by default in a main folder. Note that lithologies located in main lithology folders are not merged with PetroMod. Therefore, the simulator does not have access to them, and they cannot be assigned in a Facies definition table in PetroMod or in Petrel.
Workaround: If you want to use PSQL lithologies for petroleum systems modeling outside of PSQL, you must copy them to a sub- folder.
Play Chance Mapping
Play Chance Mapping Coordinate reference system (CRS) conversion possible with wrong results: If you work with Play Chance Mapping (PCM) in the Reference project tool, after a coordinate reference system (CRS) conversion the resulting surface may be distorted or have a rotation angle. The reason is that the master grid may no longer be orthogonal, which is mandatory for PCM to work properly.
Workaround: Specify the master grid after the CRS conversion and run PCM again.
The default Geomagnetic model IGRF-12 expired on January 1, 2020. If you must use a date later than December 31, 2019 in a survey program object for the well positioning calculations (EOU, Anti-collision, No-go zone), you must load a newer version of the geomagnetic model in Petrel 2021.
GeoMagnetic Loader plug-in is required to support the loading one or multiple geomagnetic models for Petrel 2021, including:
• IGRF-13. The valid date is from January 1, 1900 to December 31, 2024. This is the default built into the plug-in.
• BGGM 2020. The valid date is from January 1, 1900 to December 31, 2021.
• BGGM 2021. The valid date is from January 1, 1900 to December 31, 2022.
• HDGM 2020. The valid date is from January 1, 1900 to December 31, 2021.
• HDGM 2021. The valid date is from January 1, 1900 to December 31, 2022.
You can download GeoMagnetic Loader from the Schlumberger Software Download Center.
If the GPM simulation name given during the Run sedimentary simulation process includes a special character (space, underscore, hyphen, and so on), the resulting GPM input object retains the complete GPM simulation name but the name of the resulting GPM result object does not include any special characters (for example, GPM_3D_Model will become GPM3DModel).
Workaround: Do not use special characters in GPM simulation models.
• Project data table delete functionality: When deleting a microseismic folder and the associated data and geopolygons in the Project data table, if the Search dialog box is open, or if it was opened and then closed, you may receive an error message. As a workaround, avoid opening the Search dialog box when deleting this data type, or delete objects from the Input pane.
• Transfer of seismic logs sampled in depth from Petrel to Studio: The SRD definitions for the seismogram logs are not populated during the upgrade to 2020. They assume the SRD of the receiving project, and can be subsequently reassigned. When sent back to Studio, the SRD information is correctly retained.
• Updating merged point well data attribute: When the attribute data from a source point well data is merged into a target, the source is deleted, and the link between the source point well data attribute and the target is lost. Any updates made against the source point well data attributes are not preserved in Studio. You must delete the source point well data in a Petrel project before a transfer from Studio.
• Editable triangle mesh: Performance test statistics during transfer of Editable triangle mesh from Petrel to Studio can run indefinitely if the number of triangles exceed 40M. This is caused by a limitation in the current binary serialization format to store this type of geometry shape data in Studio Database 2020.1.
Workaround: You can resample the editable triangle mesh. Right-click the editable triangle mesh, select Simplify mesh and enter a value in New maximum number of triangles to match the surface 2D nodes and make the transfer to proceed.
• User attribute deletion: When a user attribute is deleted, the well top time stamps are not updated but the attribute is now missing from the project. Performing a right-click Retrieve all from Studio will transfer the missing attribute but it will be empty because the time stamp for the well top in Petrel is equal to the one in Studio and these objects are not transferred.
Workaround: If you have deleted an attribute in Petrel and want to retrieve it again from Studio with data values, you must modify the individual well-related objects in either Petrel or Studio to register an update in the timestamp or remove the well-related objects from Petrel so that there is no counterpart and retrieve it again from Studio.
This behavior is not limited to well top attributes but also the attributes of point well data, wells, and checkshots.
• Horizon interpretation attribute SRD label: When a horizon interpretation with attributes is sent to Studio from a project with SRD A and is subsequently retrieved to a project with SRD B, any attribute with an elevation time template will have its SRD information incorrectly labeled as the receiving project SRD B. In this scenario, the SRD label will be visually incorrect but can be safely ignored.
• Well tops attribute to point set workstep: The Quality Reporting workstep Well tops attribute to point set does not work for user-defined well tops attributes. It works only for default attributes.
• Quality Reporting Screen Capture workstep does not support georeferenced images: When using the Screen Capture workstep within a workflow, if the option to output the image as a georeferenced image is selected, an image will be created in the Input pane. However, this image is not spatially referenced as required by georeferenced images.
Workaround: Spatial information can be entered manually in the Settings dialog box of the georeferenced image.
• Any comments added to Guru pages in previous versions are not retained: If you added comments to any Guru pages in previous versions of Petrel, these are not retained in 2019.
• Quality Reporting Add to reference list does not support horizons from a 3D grid: When using the Add to reference list workstep in a workflow, if 3D grid horizons are added to that reference list then any operation that is run on that reference list will not recognize them (a message appears saying the reference list is empty).
Workaround: Use the For all icons in workstep to loop through all horizons within a 3D grid or provide the horizons manually to the Set reference list workstep.
• Custom company logos are not retained if a page is repackaged: If a new page is created in the Guru Editor and packaged with a new company logo, if the page is packaged a second time all the information is retained except the company logo (it will revert to the Schlumberger logo).
Workaround: Add the company logo during each packaging process.
• Blank guided workflow window opens if two Petrel instances are open: If there are two instances of Petrel open, accessing Guru or running a guided workflow will result in a blank Guru window opening.
Workaround: Close one instance of Petrel and Guru will function correctly.
• Customized units when creating a new Petrel project: When creating a new Petrel project, the project is sometimes set to use customized units automatically. This occurs when the GPM (Geological Process Modeling) plug-in is installed.
Refer to the Petrel Help Center topics 'GPM interaction with project units system' and 'Change the GPM template units' for more information.
• Polygon lines visualization and color fill: For a polygon set with inner polygons displayed in a 2D or 3D window, when using a solid color fill that is different than the specified object color to fill inside the polygon, the inter-polygon lines are covered by the solid filling.
Workaround: Enable color fill transparency.
• Annotation objects are not part of bitmaps: In a window display when annotation objects are pinned, the note is displayed in a bubble shape. When using tools like copy bitmap or printing, the bubble display is not captured.
Workaround: Use a snipping tool or similar software. Please communicate through the support channels if this limitation is problematic for your workflows.
• Workflow Editor: String function "Islike": When using the string function 'Islike' to compare string variables that include quotation marks as part of the string, the validation might fail because quotation marks are not supported. This issue might also occur in other as yet unidentified cases.
Workaround: Avoid using quotation marks to define string variables. Alternatively, check for equality. For example:
In the case of two-string variables ($string1="test" / $string2="test"), instead of using If ($string1.IsLike($string2)) you could use if ($string1 = $string2).
Consider that equality is case sensitive. To ignore case-sensitive cases, you could use if ($test.ToLower() =
• Petrel sessions without specific license modules - visualization and display data loss: The visualization of some window types and data objects related to specific license modules can be lost if a project is opened and then saved in a Petrel session that does not include the required license module. Some example cases are:
• Interpretation window - licensed by Seismic interpretation.
• Geobody objects - licensed by Seismic volume rendering and extraction.
• Function window - licensed by Data analysis.
In some cases, it is possible to enable the license module after the project has been opened to resolve the issue of missing objects. However, in the case of an empty Function window, do the following:
1. Avoid saving the project if there are missing license modules responsible for licensed outcomes (and be aware of auto-save settings).
2. Enable the missing license modules. To do this, click File, click License modules and then select the missing license modules.
3. Re-load the project.
• Map and plot windows display - visualization discrepancies for geopolygon and well plans: When using Map and Plot windows to visualize certain objects, those objects display in an unexpected position. These objects include geopolygons, well plan objects, and other potential Ocean domain objects (generated by plug-ins). This is a visualization issue only, and there is no data corruption. This issue is exaggerated when zooming in closely.
The issue occurs because there are different mechanisms for displaying Petrel domain objects and Ocean domain objects. When displaying polygons, it is recommended to use regular polygons. In all cases where this issue may potentially occur, it is recommended to use a 2D window.
• Geopolygons in Reference Project Tool (RPT) sometimes fails if UI left open: Geopolygons (with attributes) sometimes do not transfer if they were registered in a previous RPT transfer that was not saved. The issue occurs when you leave the RPT interface open after transferring geopolygon objects (applicable to geopolygons that have attributes associated) and then try to reopen the same project without saving the changes made in the previous transfer.
To avoid the issue, close the RPT interface after completing a transfer that includes geopolygons.
Workarounds: There is no workaround currently. If geopolygons cannot be transferred into your working project, you could make a copy of the relevant geopolygons though RPT or rebuild in a new project (to preserve object ID/GUID).
• Web map service display synchronization: When visualizing a web map service, if you activate layers for display using the Imagery settings in the Inspector, this is not reflected in the Input pane.
Workaround: Use only one procedure (the Inspector or the Input pane) to activate web map layers.
• Issues caused by ESRI engine upgrade: Because of the ESRI engine upgrade, please be aware of the following two issues:
• Projects saved in Petrel 2021.1 Preview 2 cannot be opened in Petrel 2021 versions older than build number I5532.
• If you are using a custom coordinate reference system (CRS) that contains AUTHORITY code 0, the CRS is no longer supported. Before you open a project in Petrel 2021, open the Coordinate System Manager and check the following:
• If the tables are populated, you can proceed.
• If the tables are empty (and there was no issue in versions 2016-2020), this is a symptom of the issue. Do not proceed. Contact the Customer Care Center.
• Windows GDI handles consumption: GDI handles are used to render elements in display windows. If the GDI handle limit (10,000) is reached during a Petrel session, the session can become unstable.
Workaround: Delete windows or reopen the project with all windows closed to free up the GDI handles. It is not sufficient to un-display a window because this does not free up the GDI handles.
A Petrel session has 10,000 GDI handles available and reaching the limit is considered to be low risk.
• Tools repeated in search: Multiple tools exist for some functions, such as creating windows and opening dialog boxes, and some tool names therefore appear more than once. This is an area of active development.
• Tools missing from search: Some tools, such as drop-down menus, may not appear in the search results in the Profile editor dialog box.
Geopolygons do not display in the correct position in the map viewport when using large-sized plot windows: When using a plot window with a large size and two or more map viewports are displayed at the bottom and top right, if you visualize a geopolygon with the corresponding polygon counterpart for reference, the geopolygon will shift position when you reduce the zoom display.
Function Window Scaling
Function lines: The display of a function line in a Function window shifts when you use extreme zoom and the proximity to points defined the function. This is a product of the current minimum scaling limitation.
• Surface display updates: Specific surface display updates (contour lines off and solid display set to specified) can cause the color table's histogram to disappear when opening and displaying an object in a new black window. The workaround is to switch off and on the histogram by right-clicking the top of the color table display.
• Workflow editor commands: Some of the new Workflow editor commands introduced in Petrel 2020.2 and 2020.3 do not appear in workflows when the project is opened in Petrel 2020.1. If you save the project in Petrel 2020.1, the workflow is overwritten and is completely empty when the project is reopened in Petrel 2020.2 or later versions. The affected commands are:
• Use local color table
• Use global color table
• Set color table limits
Unsupported printers: The printer HP Designjet 1055CM (model number: C6075A/system requirements: Windows 9x; Windows 3x; Windows NT) is not supported. When printing a plot window, clicking Properties in the Petrel printing dialog box results in an unhandled exception which causes Petrel to fail and close. This affects all versions of Petrel from 2017 onward. As stated in its systems requirements, the printer does not support the operating systems in which Petrel is certified (Windows 10 Professional or Enterprise Edition (64-bit)). The printer also causes issues with other applications.
Workaround: Uninstall the printer's driver and report the issue to HP.
Live collaboration: The Live collaboration feature has the following limitations:
• The list of supported data when creating a collaboration session and searching for objects can be incomplete. Supported objects that are missing from the list can be directly added to the session using the blue arrow.
• It is not possible to delete an active collaboration session. You can only delete your own session if nobody else has joined.
• It is possible to specify collaboration administrative rights to users in the collaboration.config file so that they can delete any non-active session. Note: User names are case-sensitive.
• It is not possible to join a session that contains a seismic horizon with only read-only access to the folder where the Petrel project is stored.
• Live collaboration and its workflows are not currently supported in the DELFI Petrotechnical Suite.
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