OBM Rheology Modifier CT-RHM

DESCRIPTION

CT-RHM is a liquid rheology modifier used in oil-base mud systems. It increases low- shear-rate viscosities (LSRV) and gel strengths for improved hole-cleaning. The primary application is in large-diameter, high-angle, horizontal and extended-reach wells to increase cuttings-carrying capacity. This permits higher rates of penetration while maintaining wellbore stability. It produces the highly shear-thinning rheological profile in oil mud systems, when used in proper concentrations. Normal concentrations range from 1 to 4 lb/bbl (2.85 to 11.4 kg/m3), depending on the brine content. It is activated by calcium, shear and temperature.

APPLICATION

• It is used to improve cuttings transport in large-diameter or directional wells, especially wells with diameters greater than 8 1⁄2“. or deviations greater than 25°.

• It modifies the rheological profile of oil-base muds, increasing their shear-thinning and thixotropic characteristics without using additional clay-base additives.

• It can be used in the existing oil-base mud systems, as well as in freshly prepared mud, to prepare a system with increased LSRV and gel strengths. Sufficient shear is required to develop this increase in rheology, especially in freshly prepared muds.

ADVANTAGES

• Improves the rheological profile and hole cleaning capacity of oil base mud

• Produces a more shear-thinning rheology profile as compared to alternative oil-mud gelling agents

• Increases LSRV and gel strengths with minimal yield point and plastic viscositychanges; gels tend to be fragile and non-progressive

• It can be used in existing systems or in freshly prepared mud

• Less maintenance required in the system.

PROPERTIES

Appearance - Amber Viscous Liquid

Specific Gravity -  0.90-0.91

Pour Point - 35°F
Flash Point - 175°F

PACKING
CT-RHM is packed in 55 gal HDPE or Steel Drums