Menu
Search
Filters
Close
Menu

Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!

51318-10969-Qualification of Scale Dissolver Acid Systems for 3CR Alloyed Steel and 13CR Stainless Steels Well Materials

Picture for Qualification of Scale Dissolver Acid Systems for 3CR Alloyed Steel and 13CR Stainless Steels Well Materials
Available for download

A corrosion testing program was performed aimed at evaluating scale dissolver packages to determine which package(s) were least corrosive and acceptable for use in wells constructed with 3Cr80 alloyed steel and L80 13 Cr (API 5CT grade) (1) tubulars.

Product Number: 51318-10969-SG
Author: Lucrezia Scoppio / Emilia Imbimbo / Sten Axelsen / Perry Nice / Giuseppe Mortali
Publication Date: 2018
Industry: Corrosion Monitoring and Control
$0.00
$20.00
$20.00

Acid systems are used to improve productivity through either near-wellbore damage removal or through dissolving scale inside the wellbore during production. This paper describes the qualification methodology applied in the search for effective scale dissolvers/stimulation fluids with low corrosivity. The identification of suitable acid systems is becoming increasingly more challenging. Furthermore, the operators try to lower the cost of the acid treatment itself. This may be achieved through optimization of the inhibitor package, which constitutes a significant part of the chemical cost.

A corrosion testing program was performed aimed at evaluating scale dissolver packages to determine which package(s) were least corrosive and acceptable for use in wells constructed with 3Cr80 alloyed steel and L80 13 Cr (API 5CT grade) (1) tubulars. Laboratory exposure corrosion tests were carried out at 60°C and 80°C. The scale dissolver packages consisted of 7.5%HCl, 15%HCl and 28%HCl including corrosion inhibitor packages. The main challenge was to optimize the acid formulation for 3Cr 80 alloyed steel. There is only limited data available for this material. Corrosion resistance of the tested alloys was evaluated in terms of mass loss and localized corrosion. The results of this program successfully identified the optimized scale dissolver packages for both 3Cr80 alloyed steel and L80 13 Cr (API 5CT grade), respectively.

Key words: Matrix acidizing, L80 13 Cr (API 5CT grade) (1), 3Cr alloyed steel, scale dissolver, HCl.

Acid systems are used to improve productivity through either near-wellbore damage removal or through dissolving scale inside the wellbore during production. This paper describes the qualification methodology applied in the search for effective scale dissolvers/stimulation fluids with low corrosivity. The identification of suitable acid systems is becoming increasingly more challenging. Furthermore, the operators try to lower the cost of the acid treatment itself. This may be achieved through optimization of the inhibitor package, which constitutes a significant part of the chemical cost.

A corrosion testing program was performed aimed at evaluating scale dissolver packages to determine which package(s) were least corrosive and acceptable for use in wells constructed with 3Cr80 alloyed steel and L80 13 Cr (API 5CT grade) (1) tubulars. Laboratory exposure corrosion tests were carried out at 60°C and 80°C. The scale dissolver packages consisted of 7.5%HCl, 15%HCl and 28%HCl including corrosion inhibitor packages. The main challenge was to optimize the acid formulation for 3Cr 80 alloyed steel. There is only limited data available for this material. Corrosion resistance of the tested alloys was evaluated in terms of mass loss and localized corrosion. The results of this program successfully identified the optimized scale dissolver packages for both 3Cr80 alloyed steel and L80 13 Cr (API 5CT grade), respectively.

Key words: Matrix acidizing, L80 13 Cr (API 5CT grade) (1), 3Cr alloyed steel, scale dissolver, HCl.

Product tags
Also Purchased
Picture for Effect of Temperature and Pressure on the Performance of Corrosion Resistant Alloy (CRA) Coatings in
Available for download

51318-10967-Effect of Temperature and Pressure on the Performance of Corrosion Resistant Alloy (CRA) Coatings in

Product Number: 51318-10967-SG
Author: Shiladitya Paul
Publication Date: 2018
$20.00

Thermally sprayed CRA coatings can provide a cost-effective corrosion mitigation method for infrastructure in wet supercritical CO2 at 40°C and 80°C. The scales formed on the steel protected it from further corrosion in 10 MPa and 50 MPa CO2.
Picture for Sour TLC
Available for download

51318-10964-Sour TLC

Product Number: 51318-10964-SG
Author: Gaute Svenningsen / Jon Kvarekvål
Publication Date: 2018
$20.00

In this work, sour TLC was systematically studied in autoclaves with a special holder that exposed one side of the TLC coupon while the back side was exposed to cooling liquid.

 
Picture for Atmospheric Corrosion Measurements to Improve Understanding of Galvanic Corrosion of Aircraft
Available for download

51318-10968-Atmospheric Corrosion Measurements to Improve Understanding of Galvanic Corrosion of Aircraft

Product Number: 51318-10968-SG
Author: Shiladitya Paul
Publication Date: 2018
$20.00

An atmospheric cell measures corrosion kinetics. The limiting oxygen reduction current density is increased over immersion results. A segmented, galvanic sensor that enables quantification of spatial distributions of galvanic current is presented.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support