Geology
Geology
Production Analysis
Production Analysis
Pressure Analysis
Pressure Analysis
Optimization
Optimization
Reporting
Reporting
Data Processing
Data Processing
Pressure Transient Analysis
Pressure Transient Analysis
Production Eng.
Production Eng.
Reservoir Eng.
Reservoir Eng.
CSG/CBM
CSG/CBM
Volumetrics
Volumetrics
Monte Carlo
Monte Carlo
Nodal Analysis
Nodal Analysis
VLP
VLP
IPR
IPR
Liquid Loading
Liquid Loading
Petroleum Engineering
Petroleum Engineering
RTA
RTA
Pressure Gradients
Pressure Gradients
Material Balance
Material Balance
Rel Perms
Rel Perms
RFT
RFT
PVT
PVT
Pressure Profile
Pressure Profile
Diffusivity Equation
Diffusivity Equation
PTA
PTA
Well Testing
Well Testing
Databases
Databases
Notion
Notion
Power Query
Power Query
Automation
Automation
Prompting
Prompting
Templates
Templates
Data Visualization
Data Visualization
Images
Images
No-Code
No-Code
AI
AI
Eclipse
Eclipse
Numerical simulation
Numerical simulation
Eclipse
Eclipse
VBA
VBA
Python
Python
DCA
DCA
Production profiles
Production profiles
Type Curves
Type Curves
Production Engineering
Production Engineering
Reservoir Engineering
Reservoir Engineering
Excel
Excel

The Digital Store

Welcome to CrowdField's Digital Store, a marketplace where Oil & Gas and Energy skilled pros can monetize their knowledge by creating and selling digital products.

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Productize yourself

That's right! In addition to selling your time through the freelance model at the core of our platform, you can now productize your skills and package them as sellable digital items.

From e-books, templates, how-to guides and online courses, to spreadsheets, automations, workflows, scripts, software applications, and data analytics tools, the possibilities are endless.

Start creating

As the store grows, we will become the go-to place for interested buyers to come when they need specific expertise in the Oil & Gas and Energy markets.

Get on board. Let your imagination and creativity run wild, and start creating!

Subsurface Workflows Library

Solve real subsurface problems using proven workflows, tools, and AI-assisted processes.

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CrowdField Workflows Vault

Alan Mourgues
⭐ Library Full Access
Full access to the CrowdField workflows library. Tools, scripts, and applications with ongoing updates and new releases.
Product
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Decline Curve Analysis

Alan Mourgues
Tool
Fit decline curves to production data and generate forecasts using Arps equations in Excel.
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Monte Carlo Volumetrics

Alan Mourgues
Tool
Estimate in-place volumes using Monte Carlo simulation with transparent inputs and outputs directly in Excel.
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PVT Correlations

Alan Mourgues
Tool
Calculate oil, gas, and water PVT properties using industry-standard correlations directly in Excel.
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RFT / MDT Pressure Analysis

Alan Mourgues
Tool
Analyse RFT/MDT pressure data to estimate gradients, fit trends, and identify free fluid levels in Excel.
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Critical Lift Rate

Alan Mourgues
Tool
Calculate critical lift rate (Qcr) in gas wells using Turner and Coleman correlations in Excel.
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Gas Material Balance (P/Z)

Alan Mourgues
Tool
Perform gas material balance using P/Z analysis to estimate OGIP, EUR, and recovery factors in Excel.
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Oil Rate Transient Analysis (RTA)

MAHMOUD Mahmoud
Tool
Performs rate transient analysis using Blasingame type curve matching to estimate reservoir and well parameters
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Gas Flowing Material Balance (GFMB)

MAHMOUD Mahmoud
Tool
Estimates OGIP from flowing pressure and rate data under boundary-dominated flow conditions.
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Oil Flowing Material Balance (FMB)

MAHMOUD Mahmoud
Tool
Estimates original oil in place from rate-normalized flowing pressure data using pseudo-steady state flow and depletion relationships.
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Fluid Pressure Gradient from Fluid Properties

Alan Mourgues
Tool
Calculate pressure gradients (dP/dz) from fluid properties at reservoir conditions.
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PVT Correlations for Malaysian Oils

Larry Wilcox
Tool
Generate region-specific PVT properties from Malaysian oil datasets using empirical correlations.
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Relative Permeability Curves

Alan Mourgues
Tool
Generate and adjust relative permeability curves and export simulation-ready tables directly from Excel.
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tags:

Build Engineering Apps in Excel (VBA)

Alan Mourgues
Guide
Design and implement Excel-based applications using VBA forms and custom interfaces.
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PTA Log–Log Interpretation Catalog

Alan Mourgues
Tool
Reference log–log derivative signatures for pressure transient analysis and interpretation.
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Radial Pressure Profile (IARF)

Alan Mourgues
Tool
Compute and visualize radial pressure profiles for infinite-acting reservoirs using the diffusivity equation solution.
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PVT Solver

Mohamed Bahaaeldin
App
Desktop application for calculating black oil, dry gas, and formation water PVT properties using multiple fluid correlations and best-fit model matching.
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tags:

Oil Well IPR–VLP Performance Evaluation

MAHMOUD Mahmoud
Tool
Calculates IPR and VLP curves, operating point, and probabilistic well performance cases from reservoir, fluid, and tubing inputs.
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tags:

Langmuir Isotherm Volumetrics (CSG/CBM)

Alan Mourgues
Tool
Estimate gas-in-place and recovery for CSG/CBM reservoirs from an interactive Langmuir isotherm chart.
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tags:

Radial Flow Log–Log Response (Diffusivity Solution)

MAHMOUD Mahmoud
Tool
Compute log–log pressure and derivative responses from radial diffusivity solutions using Laplace inversion.
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tags:

Gas Well Inflow (Darcy Equation)

Alan Mourgues
Tool
Compute gas well inflow performance using Darcy-based relationships between rate, pressure, permeability, and skin.
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Skin to WPIMULT Conversion

Alan Mourgues
Tool
Convert between skin factor and WPIMULT using Darcy and ECL inflow relationships.
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PTA Log–Log Catalog (IFP/Bourdet)

Alan Mourgues
Guide
Reference log–log derivative models for pressure transient analysis based on Bourdet methodology.
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