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Electrode Tool Logging Approaches for Casing Inner Coating Monitoring

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To control the casing's severe CO2 inner corrosion and minimize damage to oil wells drilled into the Yan'an formation of Jurassic reservoirs; internal plastic coating was applied to the portion of the casing below the dynamic liquid level (nearly 700 m) for each of the more than 4000 wells drilled over the last 10 years. Considering the cost factor, it was not economic for the whole wellbore to have internal coating, so only the section with serious internal corrosion was internally coated with a modified epoxy-phenolic. 

This kind of modified epoxy-phenolic coating has excellent mechanical and anti-corrosion performance. But it’s difficult to analyze the long term aging or local mechanical damage of downhole inner coating. New approaches by electrode logging tools have been studied for monitoring the inner coating.

Product Number: 51320-14795-SG
Author: Gang Guo, Qiongwei Li, Bihai Cheng, Wenwei Lu,Lihua Yang, Zhiping Zhou
Publication Date: 2020
Industries: Oil and Gas , Coatings
$20.00
$20.00
$20.00
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(Pipeline, Oil & Gas) A Hot Spread Epoxy Phenolic Coating for CUI Mitigation: From Confusion to Fusi

Product Number: 30-COAT_DEC21
Author: Mike O’Donoghue / Vijay Datta / Ian Fletcher
Publication Date: 2021
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It is fair to say that maintenance in the worldwide oil and gas industry has changed dramatically over the past ten years.  Facility owners are more than ever looking to reduce shutdown times, to improve plant efficiency and to extend plant lifetimes. With this comes the increased industry understanding about corrosion under insulation (CUI) with its deleterious impact and the ongoing desire for pragmatic high performance and cost-effective coating solutions.
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