How do you drill a sub-pressured zone with a saturated brine to prevent washout of the salts?
The answer is N-GAUGE.
Keep the saturation of the fluid but lower the mud weight to acceptable levels by emulsifying oil/diesel into water.
Nova Mud, Inc. has designed a simple two product solution that creates a water like drilling fluid that solves both issues.
N-Gauge is a simple two product system utilizing saturated brine as the base.
Diesel/Oil is then emulsified into the water phase to lower the mud weight to prevent losses in sub-pressured zones that occur below the salt.
While there is a creation of viscosity due to the emulsification process, the fluid still maintains water-like drilling properties.
The fluid can be mudded up, if needed, while sweeps and LCM pills can be mixed using standard procedures.
The system does not require special solids control.