Anti-CO2/H2S Casing Tubing

Anti-CO₂ and Anti-CO₂/H₂S Corrosion Casing and Tubing
 
With the increasingly harsh conditions of oil and gas wells, the corrosive environment faced by OCTG is becoming much more severe. Accidents caused by the above-mentioned corrosion failure not only caused huge economic losses, but also had serious social consequences.

Based on lots of experimental studies, Glory Tube develops casing and tubing with favorable anti-CO₂ and anti-CO₂/H₂S corrosion performance.
 
Uses
Used for oil and gas wells containing CO₂, H₂S corrosive media.
 
Names
Naming rule: GL+ Strength + "–*Cr"; GL+ Strength + Anti-H₂S + "–*Cr"
 
Meanings
GL - Glory Tube Non-API series
Strength - Specified minimum yield strength (the unit is KSI and trimmed to multiples of 5)
S - Anti-H₂S SS - High anti-H₂S
*Cr - Anti-CO₂ corrosion; * is Cr content
 
CO₂ Corrosion Resistance Test
Corrosion resistance test is carried out according to the service environment.

Standard Test Conditions
Test solution: 3.5% NaCl
Carbon dioxide partial pressure: 2.5MPa;
Temperature: 60℃
Time: 10 days
 
The dynamic or static autoclave corrosion resistance test is carried out according to the above conditions.
 

Anti-CO2 and Anti-H2S Corrosion Resistance of Casing and Tubing

Types	Grade	Anti-CO2 Corrosion  Resistance	Anti-H2S Corrosion Resistance
1Cr	GL55-1Cr GL80-1Cr	Corrosion resistance is doubled compared to conventional materials in moderately corrosive media	-
3Cr anti-CO2/H2S Corrosion	GL80SS-3Cr GL90SS-3Cr GL95SS-3Cr	Corrosion resistance increases by 2 times compared to conventional materials in moderate corrosive media	NACE TM 0177 A SYMS*90% 720 Hours
	GL80S-3Cr GL90-3Cr GL95S-3Cr GL110S-3Cr		NACE TM 0177 A SYMS*80% 720 Hours
3Cr anti-CO2 Corrosion	GL80-9Cr GL90-9Cr GL95-3Cr GL110-3Cr		-
9Cr anti-CO2 Corrosion	GL80-9Cr GL90-9Cr	Corrosion res stance test is carried out according to the service environment.	-
13Cr anti-CO2 Corrosion	GL80-13Cr GL110-13Cr		-