Cement Retarders
PETROCHEM R-Series conventional retarders and SR-Series synthetic cement retarders are designed to delay cement hydration and extend thickening time during oilwell cementing operations. These additives help maintain slurry pumpability, improve placement control, and support reliable cementing performance across low, medium, and high-temperature conditions.
Product Specifications
P-R200
Product Name: PETROCHEM - Low-Temperature Retarder 200 (Powder)
Application: Set-time control additive for low-temperature cementing systems
Physical Form: Dark Brown Powder
Specific Gravity: 1.23
Temperature Range: < 95°C / < 200°F
Description: Delays cement hydration to extend thickening time, maintain slurry pumpability, and support controlled cement placement.
P-R300
Product Name: PETROCHEM - Medium-Temperature Retarder 300 (Powder)
Application: Set-time control additive for medium-temperature cementing systems
Physical Form: Light Brown / Tan Powder
Specific Gravity: 1.35
Temperature Range: < 149°C / < 300°F
Description: Controls cement hydration to extend thickening time, maintain slurry pumpability, and support reliable cement placement.
P-R350
Product Name: PETROCHEM - Medium-to-High-Temperature Retarder 350 (Powder)
Application: Set-time control additive for medium-to-high-temperature cementing systems
Physical Form: Light Brown / Tan Powder
Specific Gravity: 1.41
Temperature Range: < 177°C / < 350°F
Description: Retards cement hydration to control the setting rate, extend thickening time, maintain pumpability, and support reliable cement placement.
P-R400
Product Name: PETROCHEM - High-Temperature Retarder 400 (Powder)
Application: Set-time control additive for high-temperature and HTHP cementing systems
Physical Form: Light Tan Powder
Specific Gravity: 1.67
Temperature Range: < 204°C / < 400°F
Description: Controls cement hydration to provide predictable thickening-time extension, maintain slurry pumpability, and support reliable cement placement.
P-SR250L
Product Name: PETROCHEM - Low-to-Medium-Temperature Synthetic Retarder 250 (Liquid)
Application: Set-time control additive for low-to-medium-temperature cementing systems
Physical Form: Brown Liquid
Specific Gravity: 1.08
Temperature Range: < 121°C / < 250°F
Description: Controls cement hydration to extend thickening time, regulate the setting rate, maintain slurry pumpability, and support reliable cement placement.
P-SR300
Product Name: PETROCHEM - Medium-Temperature Synthetic Retarder 300 (Powder)
Application: Set-time control additive for medium-temperature cementing systems
Physical Form: White Powder
Specific Gravity: 2.37
Temperature Range: < 149°C / < 300°F
Description: Retards cement hydration to extend thickening time, control the setting rate, maintain slurry pumpability, and ensure reliable cement placement.
P-SR300L
Product Name: PETROCHEM - Medium-Temperature Synthetic Retarder 300 (Liquid)
Application: Set-time control additive for medium-temperature cementing systems
Physical Form: Brown Liquid
Specific Gravity: 1.21
Temperature Range: < 149°C / < 300°F
Description: Provides predictable hydration control to extend thickening time, regulate the setting rate, maintain pumpability, and support reliable cement placement.
P-SR400
Product Name: PETROCHEM - High-Temperature Synthetic Retarder 400 (Powder)
Application: Cement-hydration retarder for HPHT wollastonite and magnesium-oxide cement systems
Physical Form: White Powder
Specific Gravity: 1.47
Temperature Range: 149–204°C / 300–400°F BHCT
Description: Provides controlled, predictable retardation in reactive cement systems while maintaining slurry rheology, pumpability, stability, and reliable thickening-time control.
P-SR400L
Product Name: PETROCHEM - High-Temperature Synthetic Retarder 400 (Liquid)
Application: Set-time control additive for high-temperature and HTHP cementing systems
Physical Form: Brown Liquid
Specific Gravity: 1.22
Temperature Range: < 204°C / < 400°F
Description: Provides controlled cement-hydration retardation to extend thickening time, regulate the setting rate, maintain pumpability, and support reliable cement placement.
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