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Economically Mitigating Downhole Corrosion and Wear Failures with Thermoplastic Liners

A cost versus performance study on the role of thermoplastic liners (TPL) in controlling costs associated with the protection of downhole oil and gas production tubulars from internal wear and corrosion.

Product Number: 51317--8878-SG
ISBN: 8878 2017 CP
Author: Robert Davis
Publication Date: 2017
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$20.00
$20.00

The recent NACE IMPACT study on the role of corrosion management in controlling the cost of asset corrosion refocused industry on the high cost of operational failures. This paper narrows that focus to a cost versus performance study on the role of thermoplastic liners in controlling costs associated with the protection of downhole oil and gas production tubulars from internal wear and corrosion.While it is accepted that many different types of wear and corrosion mechanisms can contribute to downhole failures it is not uncommon for oilfield subsurface engineers to discuss the absolute corrosion or wear resistance of a material or product based on unrelated applications. Material properties and test procedures are reviewed for their practicality in helping to identify nonmetallic solutions that address the common causes of downhole tubing failures. Several field studies are presented with accompanying financial data that compare available commercial products and practices used to mitigate corrosion and wear. Additionally the cost effectiveness of thermoplastic liners isanalyzed using a realistic model to evaluate financial benefits over various lengths of service. The costs of downhole failures are included to further quantify the financial benefits from extending the Mean Time Between Failures (MTBF) for each well.

Key words: Downhole Corrosion, Rod Wear, Thermoplastic liners, economics, tubing failures, Internal Pipe Liners

The recent NACE IMPACT study on the role of corrosion management in controlling the cost of asset corrosion refocused industry on the high cost of operational failures. This paper narrows that focus to a cost versus performance study on the role of thermoplastic liners in controlling costs associated with the protection of downhole oil and gas production tubulars from internal wear and corrosion.While it is accepted that many different types of wear and corrosion mechanisms can contribute to downhole failures it is not uncommon for oilfield subsurface engineers to discuss the absolute corrosion or wear resistance of a material or product based on unrelated applications. Material properties and test procedures are reviewed for their practicality in helping to identify nonmetallic solutions that address the common causes of downhole tubing failures. Several field studies are presented with accompanying financial data that compare available commercial products and practices used to mitigate corrosion and wear. Additionally the cost effectiveness of thermoplastic liners isanalyzed using a realistic model to evaluate financial benefits over various lengths of service. The costs of downhole failures are included to further quantify the financial benefits from extending the Mean Time Between Failures (MTBF) for each well.

Key words: Downhole Corrosion, Rod Wear, Thermoplastic liners, economics, tubing failures, Internal Pipe Liners

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