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51317--9527-Application of Encapsulated Scale Inhibitors - Understanding the Field Success Factors

Picture for Application of Encapsulated Scale Inhibitors - Understanding the Field Success Factors
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This product slowly dissolves for long term scale/corrosion protection. This paper describes the chemical management system that reviewed: statistical interpretation of the results, laboratory methodologies, software simulations to calculate (a) the amount of encapsulated materials (b) frequency of treatment, (c) the economic analysis.

 

Product Number: 51317--9527-SG
ISBN: 9527 2017 CP
Author: Mike Jackson
Publication Date: 2017
Industry: Oil and Gas Production
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$20.00
$20.00

The Cerro Dragón field in Comodoro Rivadavia Argentina produces 100000 bbl/day of oil and 1.3 million bbl /day water in 5 different districts. The field contains 3782 producing wells with more than 1000 ESP wells being treated for mostly scale and some for corrosion. Most of the wells produce via ESP. Due to a high Bottom Hole Temperature (~250oF) and moderate to high CaCO3 scaling tendencies many wells have a strong tendency for downhole scale formation. More than 1000 wells are treated for scale/corrosion and to minimize the complexity of logistics and cost factors the preferred control method is via the use of an innovative technology of encapsulated materials. This material is applied downhole via batch treatments where it slowly dissolves offering long term scale or corrosion protection. This paper will describe the management methodology that includes such factors as: statistical interpretation of the results new laboratory methodologies for screening the products software simulations to calculate (a) the amount of encapsulated materials to be used per well (b) the frequency of treatment (c) the economic analysis of this methodology. This paper will also describe the iterative improvement process in comparing field results with the calculated theoretical values.

Key words: Micro-encapsulated, Chemical Management System, integrity, flow assurance, rat hole, TCO (Total Cost Operation), ESP (electrical submergible pump), PCR (Phosphate Residual Concentration), MED (minimum effective dosage), Caps, Fall-Time.

 

The Cerro Dragón field in Comodoro Rivadavia Argentina produces 100000 bbl/day of oil and 1.3 million bbl /day water in 5 different districts. The field contains 3782 producing wells with more than 1000 ESP wells being treated for mostly scale and some for corrosion. Most of the wells produce via ESP. Due to a high Bottom Hole Temperature (~250oF) and moderate to high CaCO3 scaling tendencies many wells have a strong tendency for downhole scale formation. More than 1000 wells are treated for scale/corrosion and to minimize the complexity of logistics and cost factors the preferred control method is via the use of an innovative technology of encapsulated materials. This material is applied downhole via batch treatments where it slowly dissolves offering long term scale or corrosion protection. This paper will describe the management methodology that includes such factors as: statistical interpretation of the results new laboratory methodologies for screening the products software simulations to calculate (a) the amount of encapsulated materials to be used per well (b) the frequency of treatment (c) the economic analysis of this methodology. This paper will also describe the iterative improvement process in comparing field results with the calculated theoretical values.

Key words: Micro-encapsulated, Chemical Management System, integrity, flow assurance, rat hole, TCO (Total Cost Operation), ESP (electrical submergible pump), PCR (Phosphate Residual Concentration), MED (minimum effective dosage), Caps, Fall-Time.

 

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51317--9519-Development of Application Friendly Products for Wet Gas Corrosion Inhibition

Product Number: 51317--9519-SG
ISBN: 9519 2017 CP
Author: Jeffery Clark
Publication Date: 2017
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An operator in North America discovered an internal corrosion failure in a wet gas system directly below the point of injection of a water-soluble corrosion inhibitor (CI). Tests using low shear rotating cage autoclaves and a dual autoclave system were performed as a corrosion screening method.
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51317--9560-Development of a Probabilistic Framework for Integrity and Risk Assessment of Unpigabble Pipelines

Product Number: 51317--9560-SG
ISBN: 9560 2017 CP
Author: Carlos Melo Gonzalez
Publication Date: 2017
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The purpose of this paper is to present a framework for the integrity assessment of unpiggable pipelines, which are subject to internal corrosion. This integrity assessment is done by combining probabilistic flow and corrosion models with risk assessment.
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51317--9532-Corrosion of Superalloys in 200 Bar 750°C Supercritical Carbon Dioxide

Product Number: 51317--9532-SG
ISBN: 9532 2017 CP
Author: James Keiser
Publication Date: 2017
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Selected Fe- and Ni-based alloys and superalloys have been exposed in 99.995% supercritical carbon dioxide for 500 hours at 750°C and 200 bar. Post exposure examination provided information on corrosion rates, microstructural evolution and the carbon concentration in the exposed materials.
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