internal coating pipelines
TRANSCRIPT
Extending life of Pipelines
Internal CoatingSarah Tamilarasan
Few reasons to consider
Chemical costs -$55-60k/year (Paraffin & Corrosion)
Pigging - $12,000/year (once a month)
Operationally intensive
Internally coat pipe - $25-15/ft
Bare Pipe vs Coated Pipe
Benefits
4
Hydraulic Efficiency(Reduced surface profile = less friction
loses)
Flow Assurance(Reduced surface profile = reduction in
mechanical binding properties)
Flow Assurance(Low Surface Energy
= reduction in chemical binding
properties)
Coating Spec
• Carrizo used TK-70• Rated 225 F• Epoxy with great
flexibility and chemical resistance
• Ideal for gathering and transmission lines
Logistics with CoatingBare pipe
(delivery 3
days)
Zaplok (3
days)
Pipe, Sleeves, fittingsInternal coating
(2-4weeks)
Coated pipe
(delivery 3
days)
External
coating (1
week)
Delivery to
site (3 days)
Brief overview of Logistics
Protect coating during install
• Protect the coating• Metal to metal connectionZap-lok
• Zaplok - $6/ft• Welding varied from $26/ft-$11/ft
Economics for welding vs. Zap-lok
• 5 days of welding equivalent to 3 days using zaplok
• Saved approx. 30% -40% in construction time
Construction was faster
Brief Overview of Zaplok
Questions