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