Menu
Search
Filters
Close
Menu

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

Tailoring Chemicals for Continuous Injection Downhole via Capillary Line and “Sensitive” Jewelry

Picture for Tailoring Chemicals for Continuous Injection Downhole via Capillary Line and “Sensitive” Jewelry
Available for download

Downhole injection of corrosion inhibitors in more mature fields is required to manage scale formation and corrosion within the wellbore completion components. Discussed herein are the physical properties of chemicals injected via capillaries should possess.

Product Number: 51317--9108-SG
ISBN: 9108 2017 CP
Author: Marko Stipanicev
Publication Date: 2017
Industry: Oil and Gas Production
$0.00
$20.00
$20.00

As offshore operators explore deeper waters and develop more mature oil and gas fields with complex well structural designs, new and different challenges are encountered that can impact production. Continuous downhole injection of chemicals is increasingly required to manage challenges, such as scale formation and corrosion within the wellbore completion components. Many challenges are met when designing and qualifying chemicals for continuous downhole injection via capillary line for such systems. Discussed herein are the physical properties production chemicals injected via capillaries should possess, including temperature stability, gunking, compatibility with process fluids, and efficiency. However, the main challenge and focus addresses the compatibility of neat chemicals with downhole jewelry materials. Two chemical qualification processes are discussed - a corrosion inhibitor and a combined corrosion- and scale inhibitor. The corrosion inhibitor is a synergistic blend of imidazoline salt and other surfactants, while the combined inhibitor is a synergistic blend of amine, terpolymer, and various additives. Both chemicals are tailored to reduce corrosion, while the combined inhibitor also inhibits mineral crystal growth. The products had to be tailored and qualified for capillary line injection with downhole parts made of UNS S41000, UNS N04405, and cemented tungsten carbide (91.6 HRA, 6% - 9% Co) as chemically wetted components at elevated temperatures. The chemicals have shown good performance and have satisfied defined requirements for safe deployment downhole.

Key words: Corrosion Inhibitor, Scale Inhibitor, Capillary Line, Downhole Jewelry

 

As offshore operators explore deeper waters and develop more mature oil and gas fields with complex well structural designs, new and different challenges are encountered that can impact production. Continuous downhole injection of chemicals is increasingly required to manage challenges, such as scale formation and corrosion within the wellbore completion components. Many challenges are met when designing and qualifying chemicals for continuous downhole injection via capillary line for such systems. Discussed herein are the physical properties production chemicals injected via capillaries should possess, including temperature stability, gunking, compatibility with process fluids, and efficiency. However, the main challenge and focus addresses the compatibility of neat chemicals with downhole jewelry materials. Two chemical qualification processes are discussed - a corrosion inhibitor and a combined corrosion- and scale inhibitor. The corrosion inhibitor is a synergistic blend of imidazoline salt and other surfactants, while the combined inhibitor is a synergistic blend of amine, terpolymer, and various additives. Both chemicals are tailored to reduce corrosion, while the combined inhibitor also inhibits mineral crystal growth. The products had to be tailored and qualified for capillary line injection with downhole parts made of UNS S41000, UNS N04405, and cemented tungsten carbide (91.6 HRA, 6% - 9% Co) as chemically wetted components at elevated temperatures. The chemicals have shown good performance and have satisfied defined requirements for safe deployment downhole.

Key words: Corrosion Inhibitor, Scale Inhibitor, Capillary Line, Downhole Jewelry

 

Product tags
Also Purchased
Picture for Risk Assessment And Downhole Chemical Treatment Program For Production Wells Within The Wafra Field
Available for download

51316-7115-Risk Assessment And Downhole Chemical Treatment Program For Production Wells Within The Wafra Field

Product Number: 51316-7115-SG
ISBN: 7115 2016 CP
Author: Tariq Kamshad
Publication Date: 2016
$20.00

Chemical treatment of reservoir fluids within the wellbore is essential for the control of associated corrosion and scale deposition. The Wafra Risk Assessment was developed with the Likelihood of Failure (LoF) based on historical corrosion well workover failures and the Consequence of Failure (CoF) directly tied to oil daily oil production.
Picture for Development of a Corrosion Model for Downhole Applications
Available for download

51316-7693-Development of a Corrosion Model for Downhole Applications

Product Number: 51316-7693-SG
ISBN: 7693 2016 CP
Author: Kyle Addis
Publication Date: 2016
$20.00
Picture for Application of a Downhole Corrosion Model
Available for download

51316-7827-Application of a Downhole Corrosion Model

Product Number: 51316-7827-SG
ISBN: 7827 2016 CP
Author: Sonja Richter
Publication Date: 2016
$20.00
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