Where we work

The engineering problems are brownfield and they arrive at the same time. Processing facilities rebuilt or expanded while producing. Produced water re-injection added in phases. Transfer lines between facilities commissioned. Flowlines reaching end of life on high water cut. Scale restricting chokes. A forecast has to carry facility oil and water limits, transfer line liquid capacities and disposal headroom at the same time, with each well counted once.

Data sit in daily exports, planning files and controlled drawings with different dates. A record that takes each fact from its most authoritative source, with the date, pays for itself quickly. Change runs through a brownfield stage gate process. Commissioning and restart are activities verified in the field, with hold points, not calendar events.

Export routes are shared and can close without notice, so restart planning is a standing capability. A restart written one well at a time, with checks between phases and stop criteria, recovers production faster than an ambitious one that trips.

What we are asked for

• Oil and water forecasts with transfer and disposal limits
• Commissioning and restart plans with hold points
• P&ID and statement of requirements review for new lines and trains
• Produced water balances and disposal headroom
• Flowline replacement programme integration and scale procedures
• Well profiles, deferral registers and management reporting from one data model

Decommissioning spend reached GBP 2.6 billion in 2025, about half of it on wells. The regulator expects about GBP 3 billion a year from 2026 to 2032, with around 500 inactive suspended wells still waiting for final abandonment (NSTA, UKCS Decommissioning Cost and Performance Update, 13 August 2026). No exploration wells were drilled in 2025 and production has fallen about 40 per cent in five years (OEUK Business Outlook 2026).

For an operator this means integrated asset models on platforms where weight, space and power are fixed, cessation of production planning that follows the economic limit well by well, and a clear view of which interventions still pay. For a buyer or a lender it means technical due diligence that prices water cut, integrity, abandonment and the liability the seller has kept.

Our senior people's operating experience on mature UK assets was gained in previous employment and is labelled as such throughout the site.

What we are asked for

• Integrated well, network and facilities modelling on brownfield platforms
• Late-life production optimisation and economic limit planning
• Intervention diagnosis, programmes and post-job review
• Technical due diligence on asset sales with retained liabilities
• Decommissioning cost review from an operations viewpoint

Nigeria produced about 7.5 billion cubic feet of gas a day in 2025 against a 2030 target of 12. A mid-point review projected only about 1.3 billion cubic feet a day of new production by 2030 against 4.6 planned (Decade of Gas Secretariat, 2026; NRGI as reported by ThisDay, 28 September 2026). About 302 billion cubic feet was flared between January 2025 and June 2026 (NUPRC data as reported, 2026). The 614-kilometre AKK pipeline was reported 95 per cent complete in July 2026. The Ajaokuta mini-LNG cluster, five plants totalling 97 million cubic feet a day, depends on it for feed.

Indigenous operators now produce more than half of the crude after the 2024 and 2025 divestments. They have inherited mature Niger Delta fields with water cut above 50 per cent, carbonate scale and ageing flowlines. The 2026 decommissioning regulations tie approved abandonment plans to annual fund contributions. Reserve-based lending through African development finance institutions is the current funding model, and lenders want the engineering priced.

Our work here is Assos Tech study material: pipeline concepts developed from the pressure envelope, and small-scale LNG balances that separate the screening case from the bankable one, with each input marked as measured, vendor-stated or assumed.

What we are asked for

• Gas pipeline hydraulics and concept from the pressure envelope
• Mini-LNG, CNG and gas-to-power screening on one basis
• Feed, yield and energy balances with each input classed
• Technical due diligence for acquisitions and reserve-based lending
• Produced water and scale assessment on inherited mature fields