The CleanBore system consists of four fluids that help provide quick and effective cleanout of oil-based mud (OBM) so that perforating or production in completion operations can begin. The following fluids are used in the system:
- Spacer pill
- Gel pill
- Brine pill
- Solvent pill
CleanBore A surfactant is added to the spacer pill to enhance the cleanout of oil substrates through an ultra-low interfacial tension. The addition of the surfactant also helps prevent the formation of highly viscous emulsions that could affect fluid transport and increase pumping pressure.
CleanBore A surfactant is nonionic and made from natural-based alcohols and starch. It is environmentally friendly and biodegradable. Because it does not have a cloud point, it can be used in wellbore temperature ranges from 80°F to 400°F (27°F to 204°F).
When used with the CleanBore system, CleanBore A surfactant can provide the following benefits:
- Helps leave the pipe and formation in a water-wet condition.
- Applicable over a wide temperature range.
- Environmentally friendly.