All case studies

Buying back capacity at the CPF — with a modular wellpad next door.

Client
Matahio Energy
Year
2023
Location
Onshore New Zealand
Role
Surface Facilities Engineering Lead
01 / CONSTRAINTExisting CPF capacity was the bottleneck.
02 / ENGINEERING MOVEA modular wellpad enabled the new tie-ins without rebuilding the CPF.
03 / RESULTFEED package with a Class 2 cost estimate, ready for execution tender.
Simplified tie-in diagram showing a new modular wellpad connected to the export header alongside an existing CPF at capacity Simplified tie-in diagram showing a new modular wellpad connected to the export header alongside an existing CPF at capacity
Simplified tie-in concept · existing CPF + modular wellpad

Scope

FEED for a modular production facility designed for an onshore New Zealand wellpad to debottleneck the existing Central Production Facility. The new wellpad module would handle additional well tie-ins beyond the CPF's current capacity — without requiring a rebuild of the CPF itself.

The work had to provide the client with an execution-ready package: PFDs and P&IDs, equipment datasheets, project specifications, and a Class 2 cost estimate ready to take to tender.

Engineering decisions

The starting point was Matahio's production forecast and the CPF's current process limits. From those, a modular wellpad facility was sized, simulated, and developed through PFDs and P&IDs to a level ready for execution tendering.

The module's footprint, utilities and tie-in points were chosen to minimise interruption to the existing CPF. Process, static and rotating equipment specifications were taken to a level suitable for vendor RFQ and bid evaluation.

Engagement

Surface Facilities Engineering Lead through FEED. Owned the surface facilities basis of design and the Class 2 cost estimate, coordinated discipline engineering, and managed vendor engagement end-to-end.

Outcome

The client received a coordinated FEED package with a Class 2 cost estimate, ready for execution tendering. The selected modular arrangement created a route to add well capacity while avoiding reconstruction of the existing CPF.

Deliverables

  • Project schedule and planning
  • Class 2 project cost estimate
  • Project resource estimate
  • Surface facilities basis of design
  • Surface facilities process simulation
  • Surface facilities PFDs and P&IDs
  • Heat & material balance
  • Equipment datasheets — static and rotating
  • Main project specifications
  • Vendor RFQs, liaison and bid evaluation

Need an execution-ready plan for a brownfield constraint? Discuss the scope.

Next case study: Chevron Seawater Injection