About
About TestWells
An independent consultancy specialising in well test planning, design and interpretation — a team of practitioners focused on getting the most value from every test.
Our story
Founded in 2013 on major-operator experience
TestWells was founded in 2013 by Nico Rossi. Nico began his career at BP in a range of roles — petroleum and reservoir engineer, completion engineer and well test engineer. After Macondo, he moved to London to provide specialist technical support to BP’s global exploration and appraisal well testing projects and formation evaluation activities.
He created TestWells to provide reservoir and petroleum engineering support, coaching and training. Today our senior specialists and associate experts cover well testing, pressure and rate transient analysis, production and reservoir engineering, and software development.
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TestWells in under a minute
Well test design, interpretation, software and training: the short version.
Our expertise
What our specialists cover
Well test design & operations
Test design, real-time data QC and live interpretation for exploration and appraisal wells.
Pressure transient analysis
Interpretation of all well and reservoir types, including deconvolution and multi-well interference.
Production & rate transient analysis
Surveillance of producers and injectors from planned and opportunistic shut-ins.
Fracture diagnostics
DFIT, ACA, minifrac and post-frac evaluation.
Reservoir characterisation
Integration with geology, petrophysics and semi-analytical reservoir modelling.
Training & coaching
Practical courses in well test design and analysis for engineers and geoscientists.
What we believe
Principles we work by
Data quality first
The best interpretation can’t fix a poorly designed test. We invest in design and QC.
All the solutions
Well test answers are rarely unique. We show the range, not just the convenient one.
Integration
Results only matter when they’re tied to geology, petrophysics and the development plan.
Sharing knowledge
Through the Learning Centre and the free Well Testing Group.
Software
Tools built by practitioners
ConvEx
Production dynamic analysis, interference studies with multi-well deconvolution, and matching of data with more complex reservoir models using a semi-analytical reservoir simulator.
PIE-Web
A cloud-native, automated and AI-assisted application. PIE-Web combines the proven algorithmic depth of PIE — the industry’s most rigorous PTA software — with a modern, user-friendly and intuitive web architecture that removes all barriers to access, standardises workflows, and unlocks data-driven automation and optimisation.
PIE Desktop
The proven PIE pressure transient analysis software, known for rigorous well test interpretation. The software has been enhanced by experts at TOTAL and BP over the past 30 years, with the most reliable deconvolution and analytical models on the market.
Contact
Start a conversation
Tell us about the well, your objectives and your timeline. You’ll hear back from one of our specialists directly.