first subsurface oilfield management

© 1st Subsurface Oilfield Management

  • LinkedIn Social Icon


1st Subsurface is a multidisciplinary consultancy, specialising in subsurface oilfield management, exploration and asset strategy. 

1st Subsurface works not only with licensees, but with a wide range of stakeholders to analyse, identify and execute opportunities to maximise economic recovery and mitigate risk.  This covers the full life cycle - from exploration to late life and cessation of production issues, and supply chain opportunities.

Using our in-house expertise and our unique database TROVE, 1st Subsurface are able to add substantial value in the M&A process through opportunity identification, due diligence and risk mitigation.

With experienced employees and associates, our passion and dedication is to maximise economic hydrocarbon reserves. Working with us, you will find we are pragmatic, cost-effective and stay true to our technical roots.

Exploration and Development

  • Portfolio Management

  • Regional Geology and Play Fairway Analysis

  • Prospect Generation

  • Risk and Uncertainty

  • Volumetric Estimation

  • Seismic Interpretation

  • Quantitative Geophysics

Production and Decomissioning

  • Late Life Field Management

  • Infill Drilling and Workover Justifications

  • Strategic Area Plans

  • Detailed Technical Studies

  • "Final 24 Months" - End of Field Life Strategy


"1st Subsurface bring a refreshing overview and insight to the critical issues in productive basins which larger companies tend to work in departmental silos." 

Chevron Manager, Aberdeen.


"1st Subsurface offer management, employees and best-in-class associates, functioning as a team to undertake high quality assessment of late life mature assets."


Operator, Central North Sea.

Taqa Bratani

Arenite Petroleum

Northern Offshore

Repsol Sinopec

Faroe Petroleum

Black Star Petroleum

Ping Petroleum



Europa Oil & Gas

Parkmead Group

MOL Group   

Pharis Energy


Verus Petroleum

Anasuria Operating Company


Oil and Gas Authority

Our Clients