ABOUT US

Who we are

We are a global software provider with a supporting consultancy business within the Upstream Oil and Gas Industry. Our team consists of reservoir engineers, geologists and data scientists. For 15 years, we have been a trusted partner of government regulators, NOCs and IOCs to maximize asset performance and identify hidden reserves potential in a sustainable manner.

We have developed an innovative software, bMark™, utilized by key decision makers in the industry to minimize risks and inform investment decisions. bMark™ is an intuitive tool which identifies and interrogates asset underperformance. Our customers access  global data, advanced analytics and predictive benchmarks to optimize portfolio performance.

We are evolving with the industry and branching our focus to the energy transition, creating new intelligence and data-driven tools to inform decision makers in the energy revolution. As experts in maximising asset performance, we are developing a new data-driven tool to optimize asset potential through Carbon Capture and Storage, facilitating net zero carbon goals for governments and operators worldwide.

Our 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
Managing Director

Grant Stewart
Business Development Director

Peter Clark
Technical Director

Peter Clark & Grant Stewart in conversation
Belltree's Evolution Unveiled: Peter Clark and Grant Stewart in Conversation on rebranding, bMark™ and Latest Innovations.

Alliance Partner

Belltree partners with companies that extend and complement our core skill sets. A long-standing alliance with Merlin Energy Resources Ltd 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 & structural interpretation
• Complete operations geology & geophysics services
• Reservoir Modelling & Petrophysics

Find out more at www.merlinenergy.co.uk

Technical assurance given at Final Investment Decision

Greenfield oil development offshore Mexico; 1500MMstb in place

  • bMark™ helped identify twelve (12) key producing analogues, in the Gulf of Mexico.
  • Data analytics & benchmarking performed on the reservoir data. Production profiles, recovery factor forecasts & development plan supporting the FID case
  • Insights supported the FID mid-case plan & forecasts, whilst also provided guidance on areas for further modelling & sensitivity analysis.

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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.

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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.

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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.

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