Leadership Team

Belltree management work with a team of top-class in-house professionals as well as exceptional Alliance Partner companies to ensure clients receive the highest quality service and advice.

Rod Clark

Rod Clark

Managing Director

Rod is the founder of Belltree and brings a wealth of experience to the team derived from years spent working within some of the world’s top companies including Exxon-Mobil, Shell, Schlumberger, Addax Petroleum & Amerada Hess.

A pioneer in the development of the Locate-the-Remaining-Oil (LTRO) and Field Performance Benchmarking techniques, Rod is always seeking to bring new value-orientated ways of thinking about assets to our clients. This drive to innovate thinking ultimately led Rod to develop the bMark software package to help companies empower themselves with data-driven workflows.

For our consultancy clients Rod specialises in delivering C-Suite advice such as corporate strategy advice, portfolio-level benchmarking, reserves audits, project gate reviews & technical due diligence.

Rod holds a BSc in Petroleum Engineering with 1st Class Hons. from Imperial College London.

Grant Stewart

Grant Stewart

Business Development Director

Grant brings Belltree services and products to the world via his expertise in relationship-driven business development. By leveraging a diverse background in marketing, commercial and personnel roles, he is able to bring a unique complementary set of skills to the Belltree technical team to ensure always that our client relationships are prioritised.

With extensive professional networks established throughout Europe, Africa, MENA and Sub-Saharan Africa, Grant is able to act as a key connector for clients looking for technical specialists, brokering services or buy/sell side relationship management.

Peter Clark

Peter Clark

Technical Director

Peter ensures that the reputation Belltree has built for superb technical quality is maintained throughout all of our service offerings. As well as managing the delivery of the wider technical team at Belltree, Peter also likes to take a hands-on approach to delivery of client projects with particular focus on reservoir engineering, due diligence, analogue data benchmarking, reserves estimation and economic analysis projects. In addition to worldwide consultative experience with Belltree, he has many years of experience working with Santos & Santos GLNG on Australian & Indonesian conventional and unconventional assets.

Peter is a long-standing member of the Society of Petroleum Engineers and a member of the Energy Institute (UK) at the level of Chartered Petroleum Engineer. In addition, he is a Competent Person as defined in the London Stock Exchange, AIM Note for Mining, Oil and Gas Companies, June 2009.

Peter has a BEng in Petroleum Engineering with 1st Class Hons. from the University of Adelaide, Australia

Alliance Partners

Belltree has long-standing alliances with partner companies that extend and complement our core skill sets. These alliances allow us to form fully integrated teams to meet any project requirement.

Merlin Energy Resources Ltd

Merlin have an excellent track record and reputation for providing high-quality, bespoke Petroleum Geoscience consultancy services.

Merlin bring key skill sets to our integrated teams:

  • Specialist seismic and structural interpretation
  • Complete operations geology and geophysics services
  • Reservoir Modelling & Petrophysics
  • Geochemisty services

Find out more at http://www.merlinenergy.co.uk/

Optimus Engineering Ltd (Aberdeen)

Following their founding in 1999, Optimus have gone from strength to strength, building on a core of experience to develop a renowned process engineering consultancy.

Optimus bring key skill sets to our integrated teams:

  • Front-end process engineering
  • Strategic development
  • Project support
  • Safety and Risk Management

Find out more at http://www.optimusaberdeen.com/

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Technical Specifications



  • PC with i5 Processor or greater

  • Min 4Gb RAM

  • 2Gb HD space available

  • Internet Access (At least 1Mb/s download speed)

  • 64-bit operating system

  • Microsoft Windows 10 / Windows Server 2008 R2 or later (core versions not supported)

  • Microsoft .NET 4.7.2 Framework (Full) or later

  • Microsoft SQL Server Compact 4.0