Pipe liners for corrosive high temperature oil and gas production applications

Conference · Fri Aug 01 04:00:00 EDT 1997

OSTI ID:504783

Mason, J F ^[1]

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1. Elf Atochem North America, Birdsboro, PA (United States). Technical Polymers Dept.

Polyamide-11 has been used for more than twenty years as the chemical and pressure barrier in flexible pipes used in offshore oil and gas production. Recently, polyamide-11 has been used to line and protect carbon steel pipelines carrying corrosive sour raw gas and condensates. The liner was inserted in the field using the well-known roller-box diameter reduction technique. It is being used successfully at temperatures that are not possible with conventional polyethylene liners. Until now, at temperatures above about 45 C only corrosion inhibition programs have proven to be effective in controlling the internal corrosion rates of carbon steel pipes carrying sour raw gas. There is a total of about six kilometers of polyamide-11 now installed in five pipelines located in central and northwestern Alberta, Canada, and operating at temperatures up to about 80 C. The installations and the properties of exposed and aged polyamide-11 liner are discussed. The chemical resistance and mechanical properties of the polyamide-11 that make this application possible are discussed in detail.

• OSTI ID: 504783
• Report Number(s): CONF-970332--
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
36 MATERIALS SCIENCE
CARBON STEELS
CORROSION RESISTANCE
GAS CONDENSATES
HYDROGEN SULFIDES
MECHANICAL PROPERTIES
NATURAL GAS
PHYSICAL PROPERTIES
PIPELINES
POLYAMIDES
PROTECTIVE COATINGS