September 2026 Release Notes

Dear users of whitson⁺,

We’re happy to share the latest release of whitson⁺, fresh out of the coding oven. There is a lot of new functionality in this release; the whole overview can be seen below.

Make sure to CTRL + SHIFT + R in the browser to fetch the latest version!

Nodal Analysis: IPR Forecast and Gas Lift Design

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whitson⁺ expands the Nodal Analysis workflow with two major new capabilities: IPR Forecasting and Gas Lift Design. IPR Forecasting allows users to evaluate future well performance by generating future IPR/VLP conditions based on forecasted reservoir and operating conditions, while comparing multiple forecast cases and their resulting rates, pressures, and cumulative production. Gas Lift Design introduces a dedicated design workflow for evaluating gas lift valve placement and operating conditions, including mandrel-spacing calculations, valve performance, and pressure and temperature traverses. Together, these enhancements extend Nodal Analysis beyond current well-performance evaluation to support forward-looking production forecasting and artificial-lift design within the same workflow.

Production Data

Add toggles for individual plots of $C_2$ , $C_3$ , $C_4$ , and $C_{5+}$ NGL component rates and yields in the Shrunk Rates tab.

$\label{ngl_component_rates_yields}$
New production data series: Water Salinity.
Production data comments now include additional metadata: Updated By and Date Updated. This makes it easier to track when comments were modified and by whom.
Add Last Update Date metadata to production data and associated common process tables.
Apply reusable templates in the Production Data plot, allowing preferred configurations to be saved and reused.
BHP production-data handling has been updated by removing the Active BHP Injection mode and adding dedicated Water Injection and Gas Injection columns.
Add an export option to the Shrunk Rates / Common Process tab that exports all available sheets for Separator, Common Process, and NGL when the composition calculation is activated.
Rearrange the order of Production Data plots when Advanced mode is enabled for a more organized plotting workflow.

DCA and PNR DCA

DCA workflows now support Undo/Redo, making it easier to reverse or reapply forecast edits.

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Add a Sahara upload template for DCA forecasts.
Add a new Val Nav export option.
Users can now unarchive individual or multiple DCA cases that they previously archived.
Bulk View:

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- Add control over the z-order of plot traces, allowing users to determine which traces appear in front of others.
- Add the ability to define y-axis minimum and maximum values across all y-axes.
ARIES mode: ARIES table interaction has received several spreadsheet-style workflow improvements:
- Highlighted rows can now be deleted using Backspace.
- Highlighted ranges support Paste operations.
- Pasting into a single selected cell can automatically populate the appropriate cells or rows.
- Highlighted ranges can be copied.
- Cell states are now color-coded:
  - Red for read-only cells.
  - Blue for editable cells.
- Pasted dates are automatically converted to a valid ARIES date format.
Add Partial Fit support to the Bulk Autofit workflow, providing additional flexibility when fitting PNR DCA forecasts across multiple wells.

BHP / Nodal Analysis / Multi-well Gas Lift Optimizer

Add Bulk Edit Custom $p_{wf}$ , allowing users to update custom flowing bottomhole pressure inputs across multiple wells more efficiently.
Add an ESP Wear Factor for accounting for pump degradation in ESP performance calculations. The input value will multiply the stage delta head.
ESP calculations now neglect stage differential pressure when the operating rate exceeds the pump maximum rate ( $q_{max}$ ).
Rod Pump configurations now support pump depths where MD < EOT.
Add a Parallel Flow input to Gradient cases in Nodal Analysis. The selector will be active for cases with a parallel flowpath configuration.

$\label{parallel_flow_gradient}$
Enable calculations from gauge measurements for locations where gauge MD < EOT in parallel flow configuration.
Add combined Tubing + Annulus critical rate output for Parallel Flow locations where gauge MD < EOT.
Enable Foamer Injection within Nodal Analysis.
Add VLP Results table to the Results page for easier access to calculated VLP outputs.

Add Liquid Rate to the Single-Well Gas Lift plot.
Display Scenario information on the Gas Lift Results page.
Multi-Well Gas Lift Optimizer settings now support Flowing Wellhead Pressure and Injection Wellhead Pressure.

RTA and NRTA

Fractional RTA customizations can now be persisted, including settings such as plot zoom and line intercept.
Add a GOR / OGR toggle in the Numerical RTA plot.

Numerical Model

Add a Refrac option for multi-fractured horizontal wells, available in: History Matching, Sensitivities, and Probabilistics.

$\label{numerical_model_refrac}$
Enable sensitivities for each layer when having multilayer properties.
WHP upgrade: enhance the Wellhead Pressure (WHP) workflow.

Forecast Manager

Add Volume Deltas function to the Forecast Manager table for evaluating differences between forecasts over a specific period of time.

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Forecast Manager table can now display well scenarios when either the Scenario column or a Scenario filter is enabled.

Auto-Forecast and Group Forecasting

Sync Fast Fit Settings in bulk view auto-forecast to auto-forecast settings for more consistent fitting behavior between workflows. It will overwrite the fast fit bounds with the current auto-forecast settings or a saved auto-forecast template.

$\label{autoforecast_fast_fit_settings}$
Match EUR using Custom Attributes: users can use custom attribute values as the target EUR when performing Auto-Forecast.
Expand Transient Hyperbolic autofit functionality with Decline Rate handling.
Add a new forecasting sequence combining Linear Decline + Constant segments: autofits two segments, a declining linear segment until a minimum ratio constraint, then a constant segment.
Add new Daily Rates, Monthly Volumes, and Monthly Average Daily Rate export options for Group Forecasting.

Type Well

Type Well receives a significant set of workflow, visualization, and export enhancements:

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- Alt + Click can now be used to manually edit appended forecasts directly from the plot.
- Customize individual type well traces using Trace Style and Trace Color.
- Add EUR/ft to the Probit plot.
- Include UWI in the Probit plot hover information.
- Single-click a point in the Probit plot to highlight the corresponding well.
- Save settings configured through Customize Plot for later reuse.
- Add an eye icon for showing or hiding filtered-out wells on the map.
- Add a color-indicated legend to the Type Well map.
- Add Copy Table and Export to Excel functionality for the Related Properties table.
- Add reusable Type Well templates.
Type Well Manager:
- Add an editable Max Type Well Life column to the table.
- Add new export types: Daily Rates, Monthly Volumes, Monthly Average Daily Rate, and Excel.
- Add additional PowerPoint export template options for type well results.
- Add Project/Area import functionality.

Comparison Plot

Add the ability to move and rearrange plots within the 2×2 plot layout, providing greater flexibility when organizing Comparison Plot views.

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Enhance Comparison Plot to support multiple DCA forecasts and aggregated forecasts separately, providing greater control over how forecast cases are displayed and compared.

General

Introduce the new Hierarchy functionality across the software. The attribute order in the hierarchy will define the tree levels.

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Introduce a new general mass upload system with support for multiple data providers and file formats, including:
- Enerdeq
- PRISM
- Drillinginfo
- geoSCOUT
- ARIES
- Novi
- Custom
- Secretaría de Energía
Upgrade the Secretaría de Energía uploader to support four datasets: Wells, Production, Completions, and Trajectories data.

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ARIES mass upload now supports multiple qualifiers within the upload workflow.
Add new columns to Results and Well Info exports:
- BHP: Calculation Status
- Numerical RTA: $F_{cd}$ and $S_{wi}$
- Production Comments: Date and Comment
Users can now select the scenario used for bulk exports from the Wells page.

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Add the ability to define a default scenario per user.

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Linked-well tooltips now provide additional information and allow users to navigate directly to the source well.
Add annotation text-size controls to customize the plot.

Filtering / GIS Map / Color by Attribute

Well-table filtering now supports:
- Fuzzy matching: matches wells even if the Well Name, UWI, or External ID isn’t typed exactly. Useful for partial values or typos.
- Matching condition: where the value must appear – Substring anywhere, Prefix at the start, or Suffix at the end. Leave unselected to require the full Well Name, UWI, or External ID.
Add Missing and Not Missing filter conditions.
Add new variables for filtering:
- Shapefile Attribute
- Group
- Classical RTA – Intercept
- Classical RTA – Lock Intercept
Well/UWI searches now support fuzzy searching.
Lasso selections can now target a specific well location: Head, Heel, or Toe.
Add Color by Shapefile, enabling users to color-code shapefile polygons and configure their opacity based on shapefile attributes.
Add an option to hide shapefile borders.
Saved filters can now include the current lasso selection.
The Color by Attribute workflow has been substantially upgraded:
- Save configured ranges for later editing.
- Add an Advanced Settings dialog:
  - Add an overall minimum/maximum cap to reduce the influence of outliers.
  - Add logarithmic range splitting.
  - Add configurable color schemes for both discrete ranges and gradients.
- Option to link a Range Name to its minimum and maximum values.
- Preserve custom properties such as range name and color when splitting ranges.
- Simplify string-attribute ranges by removing irrelevant value and min/max columns.
- Display the well count associated with each range as a new column.
- Highlight ranges containing no wells in red.
- Type Well legends now:
  - Hide traces corresponding to ranges with no wells.
  - Follow the configured range order.

Virtual PVT Lab / Gas EOR PVT

Add Bulk Edit and Bulk Run functionality for MMP Injection Gas Composition.

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Add the NGL $C_{5+}$ to sales oil feature in the NGL module similar to the Production Data module.
Include MMP results in the Results page and exports.