internal coating pipelines

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