Cement Retarders

Riteks RCR-200 is an environmentally friendly deflocculant / dispersant that is used to control thermal gelation while stabilizing rheological properties in water based fluids. It is effective over broad pH ranges and mud types and particularly efficient in lowering PV’s in high temperature, high density fluids with bottom-hole circulating temperatures (BHCTs) up to 220°F (104.4°C) and can withstand static temperatures up to 260°F (126.7°C). RCR-200 is particularly useful in cements containing high gel percentages, and increased concentrations of RCR-200 enhance the predictability of cement thickening times.

Features and Benefits

• Increased concentrations of RCR-200 enhance the predictability of cement thickening times
• Improved slurry displacement rates at steady pressures
• Provides early cement-strength development
• Aid in extending a slurry’s temperature range and yield a smoother, more uniform slurry
• Decreases the danger of over-retarded slurries at the top of a long cement column
• Helps displace slurries at high rates while maintaining formation pressure

Riteks RCR-800 is a non-lignin cement retarder capable of retarding cement at temperatures between 80 – 220°F (20 – 105°C). This material is non-dispersing and is compatible in a wide range of additive combinations in API cements.

This is an alternative to commonly used lignin retarders. It provides good strength development and can be used in a variety of situations such a water-extended slurries, long cement columns, or cooler temperatures.

Predictable responses to changes in concentration and repeatable results has been shown. It has been proven effective in several API classes cements including Class G, Class H, Class A, Class C.

Features and Benefits

• Non-dispersing properties
• Provides linear and consistent results and good strength development
• Very compatible with other cement additives
• Increases cement thickening time