Upstream oil and gas investment · Est. 2022
We invest alongside in-country partners in fields where subsurface risk has already been reduced by earlier exploration or development, and work to maximise economic recovery from existing infrastructure.
Our approach
Many proven fields are too small for the majors and too technical for generalist investors. That is where we work.
A widening energy gap. Demand is rising with population growth, AI and data centres and the electrification of energy use, while structural underinvestment and production decline limit supply. Renewable and alternative sources cannot yet fully replace today's baseload requirements.
Our strategy. We capture oil and gas assets and opportunities in that gap. Where possible we use hybrid field power, combining oil and gas with renewables, to support a practical energy transition.
We focus on producing and appraised assets in established basins, where earlier exploration or field development has already de-risked the subsurface.
We bring private investment together with hands-on geoscience and commercial experience, working closely with in-country operators and partners.
Restarting and optimising existing fields extends the life of valuable assets, supporting local jobs, government revenues and reliable energy supply.
Ownership of oil and gas reserves and resources through licence title and joint venture participation.
Equity in existing assets with established operators. We would also consider acquiring an operating company together with its team.
We are based in the UK and, for operational reasons, broadly focus within eight hours of GMT.
Portfolio
| Asset | Country | Basin | Interest | Operator | Stage |
|---|---|---|---|---|---|
| Block 8 | Peru | Marañón (onshore, Amazon) | 30% | Upland Oil & Gas | Producing |
| Block XXIII | Peru | Tumbes (onshore, coastal) | 30% | Upland Oil & Gas | Appraisal and development |
| Block XCIX | Peru | Ucayali (onshore, Amazon) | 100% | Tetra Energies | Technical evaluation |
| Avington field (PEDL070) | UK | Wessex (onshore) | 5% | Star Energy | Shut-in |
| PL090 (SY78a, SY88a) | UK | Wessex (onshore) | 25% | Egdon Resources | Exploration |
A technical service contract in the Amazon, won through a competitive bid. Once a flagship state development in the 1970s, the block is being restarted by operator Upland Oil & Gas, bringing wells back online since late 2024. It produces about 4,900 barrels of oil per day (August 2026), sold to the PetroPeru refinery in Iquitos and ATEM in Manaus. Further satellite facilities put the 6,000 barrel per day target within sight.
An onshore coastal block within about 10 km of the Pan-American Highway, operated by Upland Oil & Gas. Its conventional gas fields are proven by multiple wells and flow tests, and Piedra Candela is being developed to supply compressed natural gas. The Cardalitos trough adds unconventional gas potential.
A technical evaluation area held 100% by Tetra Energies in the Ucayali basin of the Peruvian Amazon, near the Brazilian border. It contains the undeveloped Sheshea discovery, with further exploration upside. The current work programme is a subsurface evaluation of the area: reviewing all existing well data, reprocessing the available 3D seismic and assembling a prospectivity review.
An oil field near Winchester in the onshore Wessex basin, in subarea SU52a, operated by Star Energy. The field is shut-in and scheduled for abandonment.
An exploration interest in Dorset, operated by Egdon Resources, with potential for oil in the Sherwood and Bridport sandstones. The primary prospect, Broadmayne, is a tilted fault block defined on 3D seismic. The interest excludes the Waddock Cross field.
Maps are schematic: licence outlines are redrawn from public regulator information and are not to survey accuracy.
The site handles more than 300,000 barrels of fluid a day, separating out the oil and reinjecting the rest.
Leadership
Tetra comes from the tetrahedron, the shape carbon makes when it bonds. Our mark is inspired by that geometry: three faces meeting at a single shared point.
General Manager
More than 20 years across exploration, development and new business origination. Charles began his career as a Development Geologist at Shell UK, with international experience at NAM in the Netherlands.
At Perenco he held senior technical and commercial roles, including Exploration Manager for West Africa, delivering multiple commercial discoveries in Gabon, Head of UK Subsurface and, most recently, Global Business Development Originator.
HSE and standards
Tetra Energies operates a company-wide integrated management system, certified to three international standards and built around continual improvement.
Get in touch
We welcome conversations with investors, operators and host-country partners. Email us with a little about your interest and a member of the team will be in touch.
Email the team