Service
Flow Assurance and Process Engineering
Flow assurance and process design for subsea and onshore pipelines: multiphase, single-phase oil, LPG, gas and special products.
Z-Subsea Energies carries out flow assurance and process design for subsea and onshore pipelines. Our experience covers multiphase production fluids from the reservoir through the production tubing, Xmas tree, choke and subsea pipeline to subsea or onshore processing facilities.
We also specialise in single-phase oil, liquefied petroleum gas (LPG) and natural gas, and have long experience of the hydraulics of special products such as aviation turbine fuel. From pre-FEED onwards we feed early sizing, hydrate, wax and pigging calculations into the design, updating them through FEED and detailed design.
Tools include PVTsim, PIPESIM, OLGA (including slug tracking, hydrate and wax modules), Multiflash and Maximus.
What’s included
Fluid property calculations
Steady-state analysis: line sizing, pressure and temperature profiles, turndown and erosional velocity
Transient analysis: cool-down, restart, ramp-up, packing, blowdown and surge
Hydrate and wax management strategies, including inhibitor dosage
Insulation selection and U-value optimisation
Slugging, liquid management and slug catcher sizing
Pigging simulation and optimisation
HIPPS response time evaluation and test procedures
P&IDs, PFDs and cause-and-effect diagrams
Design pressure and temperature philosophy, choke valve sizing
Start-up and shutdown operating guidelines
HAZID, HAZOP and LOPA participation, and technical evaluation of vendor proposals
Free download
Flow Assurance Capability Statement
Capability statement: steady-state and transient flow assurance, hydrates, wax, slugging and pigging.
Case studies
Delivered on these projects.
Other service areas
Often delivered together.
Asset Integrity Management
Risk-based integrity management of new and existing assets from design to decommissioning, including fitness for service, ECA and life extension.
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Subsea Engineering
Subsea systems design from pre-FEED and FEED to detailed design: field layout, pipelines, risers, structures and components.
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Advanced Analysis
Nonlinear finite element analysis of pipelines, risers, components and structures, for safer and more economical designs.
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Talk to us about flow assurance and process engineering.
Tell us about the asset, the standards and the schedule — we’ll take it from there.