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51318-11037-Methodology adopted to minimize the Risk of Oil and Gas Surface Facility during a Prolonged Shutdown Within Partitioned Zone (Kingdom of Saudi Arabia and Kuwait).

Picture for Methodology adopted to minimize the Risk of Oil and Gas Surface Facility during a Prolonged Shutdown Within Partitioned Zone (Kingdom of Saudi Arabia and Kuwait).
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The methodology developed involved initially flushing the facilities with less saline water to remove deposits and sediments, and subsequently treating the entire facility with a mixture of corrosion inhibitor, oxygen scavenger and biocide in brackish water.

Product Number: 51318-11037-SG
Author: Naser Al-Rasheed \ Tariq Kamshad \ Manickavasagan Sabesan \ A/Rahman Al-Ghamdi \ Ravi Shankar Siriki \ Mohamed M. Farah
Publication Date: 2018
Industry: Oil and Gas Production
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$20.00
$20.00

Oil and gas facilities can be subjected to faster deterioration during period of shutdown than those in operation; hence replacement of damaged equipment or piping can be very costly. Among the myriads of short-term preservation methods available, chemical treatment preservation program represents one of the most effective method to minimize the risk of continuous deterioration, hence safeguard the overall integrity of the facility.

This paper details the unique challenges encountered within the Al-Wafra oilfield when implementing chemical treatment method under the stagnant and highly corrosive conditions, as a result of unscheduled shutdown. These conditions alongside the entrapped sludge and accumulation of fluids at low spots is expected to lead to the dominance of under-deposit (UDC) and microbial induced corrosion (MIC), hence any chemical program should be designed to effectively mitigate these damage mechanisms. Consequently, the methodology developed involved initially flushing the facilities with less saline water to remove deposits and sediments, and subsequently treating the entire facility with a mixture of corrosion inhibitor, oxygen scavenger and biocide in brackish water. This is expected to significantly reduce the corrosion rates in comparison to uninhibited system. A range of corrosion monitoring techniques alongside fluid chemistry analysis was implemented for the field monitoring to ascertain the overall efficacy of the program as per key performance indicators (KPI).

 

Key words: chemical treatment, risk, stagnant condition, mechanical cleaning, corrosion inhibitor, oxygen scavenger, biocide, corrosion monitoring, under deposit corrosion, sulfate reducing bacteria.

Oil and gas facilities can be subjected to faster deterioration during period of shutdown than those in operation; hence replacement of damaged equipment or piping can be very costly. Among the myriads of short-term preservation methods available, chemical treatment preservation program represents one of the most effective method to minimize the risk of continuous deterioration, hence safeguard the overall integrity of the facility.

This paper details the unique challenges encountered within the Al-Wafra oilfield when implementing chemical treatment method under the stagnant and highly corrosive conditions, as a result of unscheduled shutdown. These conditions alongside the entrapped sludge and accumulation of fluids at low spots is expected to lead to the dominance of under-deposit (UDC) and microbial induced corrosion (MIC), hence any chemical program should be designed to effectively mitigate these damage mechanisms. Consequently, the methodology developed involved initially flushing the facilities with less saline water to remove deposits and sediments, and subsequently treating the entire facility with a mixture of corrosion inhibitor, oxygen scavenger and biocide in brackish water. This is expected to significantly reduce the corrosion rates in comparison to uninhibited system. A range of corrosion monitoring techniques alongside fluid chemistry analysis was implemented for the field monitoring to ascertain the overall efficacy of the program as per key performance indicators (KPI).

 

Key words: chemical treatment, risk, stagnant condition, mechanical cleaning, corrosion inhibitor, oxygen scavenger, biocide, corrosion monitoring, under deposit corrosion, sulfate reducing bacteria.

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51318-11039-Reinforcing the Anticorrosion Property of Epoxy Coating Utilizing Urea–formaldehyde Resin

Product Number: 51318-11039-SG
Author: Hongpeng Zheng / Yawei Shao
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Urea–formaldehyde resin was applied to an epoxy coating. The UF resin effectively prevented the corrosive medium from further permeating through to the interface between coating and steel substrate and that the UF resin could significantly reinforce the corrosion protection property.
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51318-11029-Research and Evaluation of New Imidazoline Corrosion Inhibitor

Product Number: 51318-11029-SG
Author: Xiong Zhao / Haobo Yu / Changfeng Chen / Qingzuo Chen
Publication Date: 2018
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Imidazoline derivatives have anti-corrosive effects on metals such as carbon steel and are widely used in acid-corroded pipelines for conveying oil and natural gas. In this paper, a novel imidazoline inhibitor was designed and synthesized.
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51318-11030- A study on the Effect of Volatile Corrosion Inhibitors on Impressed Current Cathodic Protection

Product Number: 51318-11030-SG
Author: Khalil M. Abed / Calvin R. Pynn
Publication Date: 2018
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 There is a growing trend to supplement cathodic protection with Volatile Corrosion Inhibitors (VCI) beneath tank floors. This work is to investigate mutual compatibility and interactions of three different volatile corrosion inhibitors and cathodic protection.

 
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