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A 100,000 BPD topside — sized, documented and issued for tender.

Client
Trendsetter
Year
2020
Location
Offshore Gulf of Mexico
Role
Lead Process Engineer
01 / CONSTRAINTA 100,000 BPD package had to fit within a host topside and be ready for vendor enquiry.
02 / ENGINEERING MOVEAlign simulation, equipment sizing, layout and bid criteria with the CapEx target.
03 / RESULTVendor-ready basic engineering package out to tender.
Workflow diagram for the 100,000 BPD seawater-injection topside, showing process simulation, equipment sizing, layout, RFQ and vendor-bid evaluation Workflow diagram for the 100,000 BPD seawater-injection topside, showing process simulation, equipment sizing, layout, RFQ and vendor-bid evaluation
Simplified engineering workflow · 100,000 BPD topside

Scope

Basic engineering and design services for the supply of a 100,000 BPD seawater injection topside destined for the Gulf of Mexico. The package needed to be defined to a level the contractor could take to vendors with confidence — sized equipment, full drawings, datasheets, layout, a defensible cost-to-build estimate, and a bid evaluation framework already in place when the RFQs went out.

Engineering decisions

Seawater-injection performance depends heavily on the deaeration train and rotating-equipment selection. The work front-loaded technology selection — coarse filtration, fine filtration, deaerator tower, vacuum package — and converged on a layout that fit the host topside's footprint while keeping rotating equipment accessible for maintenance.

Process simulation pinned the operating envelope; equipment sizing turned that into datasheets; layout drawings turned the datasheets into a buildable package; and the RFQ pack went out to vendors with bid evaluation criteria already aligned to the project's CapEx target.

Engagement

Lead Process Engineer for the basic engineering phase. Owned process design, sizing of static and rotating equipment, technical proposal authoring, and the cost-to-build estimate.

Outcome

The basic engineering phase produced a defined 100,000 BPD package, cost-to-build estimate and vendor RFQ set. Technical bid criteria were aligned to the project CapEx target before enquiries went to market.

Deliverables

  • Equipment sizing — coarse filters, fine filters, deaerator tower, vacuum package, seawater lift and injection pumps
  • Complete set of PFDs
  • Complete set of P&IDs
  • Complete set of equipment datasheets
  • Equipment list
  • Equipment layout
  • Technical proposal
  • Project schedule
  • Project specifications
  • Equipment RFQs
  • Cost-to-build estimate
  • Vendor bid evaluation

Planning a seawater-injection topside? Discuss the design basis and tender strategy.

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