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51318-11538-Scaling-resistant coatings for high temperature sour gas service

Picture for Scaling-resistant coatings for high temperature sour gas service
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This paper describes the development of novel coating materials and methods and evaluation of their effectiveness in preventing iron sulfide scale.

Product Number: 51318-11538-SG
Author: Lawrence Kool / Hui Zhu / Qilang Wang / Fakuen Chang
Publication Date: 2018
Industry: Oil and Gas Production
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$20.00

Iron sulfide scaling is one of the primary causes of impairment of gas production in deep sour reservoirs. The wells are typically acid fractured and completed with carbon steel tubing. The combination of corrosion of tubes caused by H2S and iron dissolved from the tubes during the acidizing process at high temperature, though inhibited, leads to significant scaling issues. This scale in tubulars can cause significant production losses and restricts well access for surveillance and intervention operations. A fundamental solution, therefore, is required to prevent iron sulfide scale formation and deposition along downhole tubulars. One cost-effective approach to mitigating scaling in downhole tubing is to develop high-performance coatings for carbon steel tubing. This paper describes the development of novel coating materials and methods and evaluation of their effectiveness in preventing iron sulfide scale.

Key words: hydrogen sulfide, scaling, iron sulfide, heazelwoodite, ENP, coating, scale, sour gas well, electroless nickel, HTHP sour gas, contact angle on

Iron sulfide scaling is one of the primary causes of impairment of gas production in deep sour reservoirs. The wells are typically acid fractured and completed with carbon steel tubing. The combination of corrosion of tubes caused by H2S and iron dissolved from the tubes during the acidizing process at high temperature, though inhibited, leads to significant scaling issues. This scale in tubulars can cause significant production losses and restricts well access for surveillance and intervention operations. A fundamental solution, therefore, is required to prevent iron sulfide scale formation and deposition along downhole tubulars. One cost-effective approach to mitigating scaling in downhole tubing is to develop high-performance coatings for carbon steel tubing. This paper describes the development of novel coating materials and methods and evaluation of their effectiveness in preventing iron sulfide scale.

Key words: hydrogen sulfide, scaling, iron sulfide, heazelwoodite, ENP, coating, scale, sour gas well, electroless nickel, HTHP sour gas, contact angle on

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Picture for Evaluation of macrofouling crevice characteristics in MIC of steel
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51318-11529-Evaluation of macrofouling crevice characteristics in MIC of steel

Product Number: 51318-11529-SG
Author: Samanbar Permeh / Bin Li / Mayren Echeverria Boan / Berrin Tansel / Kingsley Lau / Matthew Duncan
Publication Date: 2018
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Tests were conducted in simulated water environments with nutrient-rich environments with sulfate reducing bacteria (SRB). Effects of crevice environments, caused by macrofoulers on corrosion and in comparison with biotic condition, were studied.

 
Picture for New Eco-Friendly Chemistry for Passivation of Galvanized Coatings
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51318-11532-New Eco-Friendly Chemistry for Passivation of Galvanized Coatings

Product Number: 51318-11532-SG
Author: Mary Jane Felipe / Sidney Dunn / Timothy Underwood / Monty Pifer / Dave Fulmer
Publication Date: 2018
$20.00

This paper details the use of non-phosphate and non-zinc corrosion inhibitors, able to rapidly passivate and protect galvanized coatings.

Picture for Blistering Mechanism of High Tg Temperature FBE Coatings
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51318-11533-Blistering Mechanism of High Tg Temperature FBE Coatings

Product Number: 51318-11533-SG
Author: Sherry (Shan) Rao / Shaoguang Feng
Publication Date: 2018
$20.00

The objective of this study is to investigate blistering formation of high glass-transition- temperature (Tg) fusion bonded epoxy (FBE) coatings in an attempt to understand the blistering mechanism.
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