PAC LV
PAC LV is a low viscosity polyanionic cellulose polymer used for fluid loss control and encapsulation. The decreased number of branch chains on the polymer chain reduces the viscosity of the polymer substantially.
Application
PAC LV forms a thin, strong filter cake in order to stabilize the formation and reduce fluid loss the formation. PAC LV will act as a encapsulator in reactive formations reducing problem associated with clay and shale formations. PAC LV does not readily increase the viscosity of the system.
Advantages
- Effective in low concentrations for controlling fluid loss with minimal gain of in viscosity
- Encapsulates shale particles to inhibit swelling and dispersion
- Applicable in all water-base fluids, ranging from low-solids, non-dispersed polymer systems to density, dispersed systems
Typical Usages
| Typical Amounts of PAC LV Added to freshwater | ||
|---|---|---|
| Drilling Application | lb/100 gal | lb/bbl |
| Normal fluid loss | 0.5 - 1 | 1.2 - 2.5 |
Typical Properties
| Physical Appearance | White, granular powder |
|---|---|
| Specific Gravity | 1.6 |
| pH (1% solution) | 6.5-8.5 |
| Bulk Density | 40-55 lbs/ft³ |
Packaging
PAC LV is packaged in 50 lbs (22.7 kg) bags