Facilities Detailed Services

LoneStar Deepwater’s Topsides Production Facilities capabilities include project management and multidiscipline oversight of all phases of concept development, engineering, design, fabrication and installation, commissioning and start-up of production facilities for floating production systems and fixed platforms. Personnel provide support in the areas of project management, technical discipline leads, construction/fabrication inspection and management, mechanical completions, commissioning and start-up management and direct oversight. The experience and commitment to excellence of our personnel adds value to client projects and helps to ensure projects are executed safely and efficiently.

Services include

  • Subsea Interfaces.
  • Construction Management.
  • Project Management.
  • QA/QC.
  • Inspection Services.
  • Installation/commissioning/start-up.
  • FPSO conversions.
  • Owners Representative.


  • Wellsite Tie-ins.
  • Gathering Systems.
  • Centralized Treating Units.
  • Associated Gas Capture, Treating and Transmission.
  • Existing Production Facility De-bottlenecking.


  • FPSO Conversions.
  • Fixed Leg Platform Installations.
  • Existing Facility Modifications for Subsea Tiebacks.

Technical Oversight

  • FEED – feasibility studies, cost estimates, option development, budget development, interface with flow assurance, subsea, and drilling/completions personnel.
  • Functional Specification Preparation.
  • Detailed Design Oversight.
  • HAZOP/HAZID Participation.
  • Safety Case Participation.
  • FAT/SIT Witness.
  • Tanker Inspections.
  • Mooring Design Review.

Fabrication/Construction Inspection

  • QA/QC Inspection.
  • Progress Reporting.
  • Equipment FAT’s/SIT’s.
  • Process Module Fabrication.
  • Hull and tank repairs.
  • Marine System Additions/Modifications.
  • Accommodation Upgrades.
  • Pipeline Installation.
  • Stick build Facilities.

Installation, Commissioning and Start-up

  • Onsite Client Representation.
  • Topside (Facilities) Construction/Commissioning Oversight.
  • Mooring Installation Management.
  • Subsea Interface/Hook-up Management.