A Christmas Gift for the Subsurface Crowd

A limited evaluation period for CrowdField’s flagship tools.

CrowdField Year-End Access Window

100% Free Full Access to Flagship Tools.
Time-Limited License.

As 2025 wraps up, I’m opening a limited access window to a curated bundle of CrowdField’s flagship tools. This is not a demo. It’s full access, granted under a three-month, non-renewable license, expiring on 31 March 2026.

What’s included

You’ll receive licensed access to a frozen bundle of CrowdField’s flagship tools, covering core reservoir, production, and subsurface workflows.

[See the included tools in the gallery below.]

Important:
The bundle is frozen for the duration of the license. No updates or additional tools are included during the access period. Access expires automatically after three months.

Why I’m opening this access window

CrowdField is built around one idea: helping technical professionals build leverage through tools, workflows, and independent capability.

Rather than explaining that through marketing copy, I prefer to let the tools speak for themselves.

  • Say thank you to people who’ve followed the project
  • Let you evaluate the tools in real conditions
  • Help you decide whether CrowdField is something you want to stay connected with

No obligation. No auto-renewal.

How to unlock access

CrowdField’s YouTube and LinkedIn channels are currently the best places where I share workflows, demos, and behind-the-scenes work... but their reach still lags behind.

To unlock access, please complete the two steps below first:

1. Subscribe on YouTube CrowdField YouTube channel
2. Follow on LinkedIn CrowdField on LinkedIn

After completing the steps above, submit your license request below. Requests are processed manually and remain open until the access window closes.

Included Tools

A curated selection of CrowdField’s flagship reservoir and production tools, provided under this year-end access window. The gallery below shows exactly what’s included.

Excel DCA Tool

Alan Mourgues
Excel template
Video tutorial
With this Excel DCA Tool, users can fit a regression trend to historical production data using Arps' Equations and perform a production forecast based on the fitted trend... all within Excel, with no need for any third-party software.
Product
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Monte Carlo Volumetrics in Excel

Alan Mourgues
Excel template
This Excel-based tool enables quick, transparent, and customizable volumetric assessments for oil reservoirs using Monte Carlo simulation—no complex software required.
Product
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Excel RFT / MDT Tool

Alan Mourgues
Excel template
Use this Excel tool to set gradients based on reservoir fluid density, fit data with discretion, and determine fluid contacts accurately. Just paste your data and adjust with interactive sliders... no need to start from scratch each time.
Product
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Critical Lift Rate - Excel Calculator

Alan Mourgues
Excel template
Calculate the critical lift rate (Qcr) in gas wells using Turner and Coleman correlations with this Excel tool. Includes a simple interface, built-in PVT correlations, and an interactive Qcr vs. pressure chart.
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Relative Permeability Curves: Instant Export from Excel to Simulation

Alan Mourgues
Excel template
Streamline your relative permeability (rel perm) table generation with this Excel tool. Adjust sliders to visualize impacts on endpoints and curve shapes, and export simulation-ready tables in one click—no need for complex pre-processing software.
Product
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Gas P/Z Material Balance

Alan Mourgues
Excel template
Streamline material balance calculations for gas reservoirs with this Excel tool, featuring easy data input, automatic Z-factor calculation, interactive data fitting, and quick readouts for OGIP, EUR, and RF. Perfect for efficient P/Z straight-line analysis.
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Langmuir Isotherm: CSG/CBM Volumetrics

Alan Mourgues
Excel template
This Excel utility is designed for engineers working with coal seam gas (CSG) / coalbed methane (CBM) reservoirs who need a transparent, hands-on way to estimate volumetrics, understand sensitivities, and generate simulation-ready inputs.
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