BIO-STAR D
BIO-STAR D is a cellulose-based natural polymer drilling fluid system that promotes borehole stability, exhibits excellent hole cleaning and cuttings suspension. BIO-STAR D is easily broken down with hypochlorite oxidizing agents or enzyme breakers.
Application
BIO-STAR D is designed for use in drilling operations where bentonite is not permitted and a biodegradable fluid is specified. BIO-STAR D can also be used with bentonite for added fluid loss control and hole cleaning
Advantages
- Effective viscosity promotes efficient bore hole cleaning and cutting suspension
- Excellent dispersion and hydration (once pH adjusted to 7.5 - 10)
- Maintains borehole integrity without restricting natural porosity and permeability
- Easily broken following well screen installation with hypochlorite or enzyme breakers
Typical Usages
| Typical Amounts of BIO-STAR D Added to freshwater | |||
|---|---|---|---|
| Drilling Application | lb/100 gal | lb/bbl | kg/m3 |
| Consolidated | 2.5 - 4.5 | 1 - 1.5 | 3 - 4 |
| Unconsolidated | 5 - 7 | 2 - 3 | 6 - 8.5 |
| Increase Yield Point | 0.25 | 0.1 | 0.3 |
Typical Properties
| Physical Appearance | White, granular powder |
|---|---|
| Specific Gravity | 1.2 |
| pH (2% slurry solution in water) | 6.5 - 7.5 |
Packaging
BIO-STAR D is packaged in 50-lb (22.7 kg), multi-wall sacks at 50 sacks per pallet