DESCRIPTION
COREWELL is a sophisticated multifunctional system created especially for diamond coring and slim-hole drilling activities. COREWELL provides superior protection of the core, improves side wall stabilisation and controls fluid loss. COREWELL helps secure a native state preserved sample allowing for more reliable core analysis data ultimately leading to more accurate resource evaluations. COREWELL employs physical mechanisms that entrap unconsolidated soils and cuttings to prevent dispersion.
APPLICATION
COREWELL produces a complete fluid system for drilling designed to protect exposed formation, imparting sample integrity and maximise the recovery. COREWELL is an easy-to-use readily dispersible product that unlike many other fluid systems does not require additional components to enhance properties. COREWELL forms a micro-network structure similar to a three dimensional web that layers out over the exposed formations effectively encapsulating clay and shale surfaces to support and protect.
COREWELL combines specific fluid properties to ensure an immaculate sample is recovered. Concentration will increase slightly when used in systems containing inhibitive salts.
ADVANTAGES
- Economical
- Single component multifunctional system
- Compatible with slim hole drilling
- Enhances hole stability
- Provides sample protection
- Maintains sample integrity
- Controls dispersion
- Improves solids separation on surface
- Readily disperses in low shear environments
- Environmentally acceptable
TYPICAL PROPERTIES
- Appearance: Granular, off white crystals
- Odour: None
- Specific gravity (0.2 % sol.): 1.00 ± 0.05
- Solubility: Fully soluble, but limited by viscosity
- pH (0.2 % sol.): 8.0 – 9.0
RECOMMENDED TREATMENT
Prior to adding COREWELL pre-treatment to the mix water is recommended; adjust pH to 8.5 – 9.5 and control hardness levels below 400 mg / L Calcium.
COREWELL is added slowly at concentrations of 0.5 – 1.75 kg / m3, 0.2 – 0.6 lbs per bbl, or 1.45 – 5.1 lbs per 1000 gallons to water and allowed to mix for 20 – 30 minutes to achieve complete dispersion. An additional 30 minutes of hydration may be required for superior yield. Viscosity of the product will vary according to the concentrations used therefore pilot testing is recommended prior to use.
