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51317--9592-Case Study: Engineered Polyamide 12 (PA12) Pipeline Liner for Management of Sour Gas Corrosion at Elevated Temperatures

A polyamide 12 (PA12) material has been specifically engineered. After laboratory testing, a significant project was developed to install PA12 in a sour, multiphase, pipeline. Material qualification program is discussed. Performance of the liner in service and inspection of test coupons are described.

Product Number: 51317--9592-SG
ISBN: 9592 2017 CP
Author: James Mason
Publication Date: 2017
$0.00
$20.00
$20.00

Field-inserted thermoplastic liners are often the preferred corrosion management option in crude oil and gas gathering lines. Performance limitations of conventional HDPE liners in sour multiphase crude gathering lines are well established. A PA12 material has been specifically engineered for use in a much broader range of conditions with longer design lifetimes. After extensive laboratory testing and analysis including chemical resistance testing mechanical durability studies and installation method compatibility testing a significant project was developed to install PA12 in the Lone Pine Creek field near Calgary Alberta Canada. The sour multiphase pipeline operates at 40-50C with H2S concentration of 21 mol%. The material qualification program is discussed followed by the liner design and installation process. Performance of the liner in service will be described as well as the results of inspection of test coupons placed in the flow stream for a period of one year.

Key Words: thermoplastic, lining, liner, insertion, PA12, nylon, diameter reduction, sour gas, hydrocarbon resistance

Field-inserted thermoplastic liners are often the preferred corrosion management option in crude oil and gas gathering lines. Performance limitations of conventional HDPE liners in sour multiphase crude gathering lines are well established. A PA12 material has been specifically engineered for use in a much broader range of conditions with longer design lifetimes. After extensive laboratory testing and analysis including chemical resistance testing mechanical durability studies and installation method compatibility testing a significant project was developed to install PA12 in the Lone Pine Creek field near Calgary Alberta Canada. The sour multiphase pipeline operates at 40-50C with H2S concentration of 21 mol%. The material qualification program is discussed followed by the liner design and installation process. Performance of the liner in service will be described as well as the results of inspection of test coupons placed in the flow stream for a period of one year.

Key Words: thermoplastic, lining, liner, insertion, PA12, nylon, diameter reduction, sour gas, hydrocarbon resistance

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