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CRM-19
Product #9125
CRM-19 is a unique polymer used in reducing the viscosity of cement slurries to improve the flow properties. In effect it lowers friction, so that turbulent flow can be achieved at lower pump rates thereby reducing overall horsepower requirements and enabling these slurries to be placed across formations with low fracture gradients, or into small annular spaces.
CRM-19 can be used to reduce cement fluid loss, but to a lesser degree than polymeric additives designed specifically for that purpose. It is compatible with a wide variety of commonly-used oilwell cement additives, and salt slurries with concentrations up to 18% BWOW.
Application
Oilfield Cementing: Typical concentration can vary from 0.5% to 2% BWOC. CRM-19 can be used to disperse weighted slurries up to 2250 kg/m³, but use in low-density slurries can result in an excess of free water leading to particle segregation. This is typical of cement dispersants, and laboratory testing should be carried out before recommending for field use. Excessive dispersant loading can lead to slurry disintegration, severely retarded set and possible bridging off mid-job.
Other: CRM-19 can be used as a dispersing mechanism for manufacture of gypsum wallboard products, and other similar industrial applications.
Mixing & Handling
CRM-19 can be dry blended or prehydrated as required. Avoid breathing dust. Wear the appropriate protective equipment when handling this product. For further information, consult the Material Safety Data Sheet.
Physical Properties
Appearance: Free flowing brown powder
Specific Gravity: 1.30 g/cc
Bulk Density: 640-750 kg/m³
Chemical Properties
Chemical: Polymer
Solubility: Soluble in water
pH: 7.0 - 9.0 (5% fresh water)