Duplex 2205 Tubing for Downhole Chemical Injection Lines

What is a downhole chemical injection line?

Duplex 2205 (UNS S32205) coiled tubing for downhole chemical injection lines, supplied to Luanda, Angola.

A downhole chemical injection line is a specialized tubing system used in oil and gas wells to deliver chemicals directly into the wellbore at specific downhole locations. These chemicals are injected to manage and mitigate various issues that can occur during the extraction of hydrocarbons, such as corrosion, scale formation, hydrate formation, and wax deposition. Downhole chemical injection lines serve multiple critical functions, including corrosion inhibition to protect wellbore and production tubing from corrosive agents, scale inhibition to prevent clogging from mineral deposits, hydrate prevention in colder environments to avoid pipeline blockages, wax control to maintain oil flow by dissolving or preventing paraffin buildup, and enhanced oil recovery (EOR) by injecting chemicals that improve oil flow and boost recovery rates from the reservoir.

The use of Duplex 2205 tubing | ASTM A789 UNS S32205

Duplex 2205 coiled tubing for downhole chemical injection lines, to a BP oil project in Algeria.

Duplex 2205 tubing is widely used for these fabrication of downhole chemical injection lines. They are generally manufactured in accordance with ASTM A789 UNS S32205 in coiled capillary tubing. As a duplex stainless steel, S32205 offers a balanced microstructure of austenite and ferrite, providing resistance to pitting, crevice corrosion, and stress corrosion cracking, which are common issues in downhole applications. This tubing can withstand the high pressures and aggressive chemicals involved in corrosion inhibition, scale prevention, and other vital functions, ensuring reliable and long-lasting performance in oil and gas wells. Metalsin Tech has been supplying this tubing to many oil and gas projects worldwide.

Sizes & Dimensions

The duplex 2205 (ASTM A789 S32205) tubing supplied by Metalsin Tech is generally in outside diameter of 0.250″-0.625″, and in wall thickness 0.032″~0.065″. The duplex 2205 tubing used for this purpose is usually furnished in coiled type and the diameter of the tubing is relatively very small. The maximum length of each tubing can be up to 3600 meters.