VERBESSERTE ENTSORGUNG VON KONTAMINIERTEM BOHRKLEIN AUS GEOLOGISCHEN BOHRUNGEN MIT MINERALOEL-ENTHALTENDEN BOHRSPUELSYSTEMEN

摘要

Described is the use of environmentally compatible and, in particular, biodegradable oils with flash points above 80 DEG C to wash cuttings contaminated with mineral oil before the cuttings are disposed of by dumping them offshore or onshore. The washing oils preferably used are aerobically and/or anaerobically degradable low-viscosity oils which may also be used as a component of the closed oil phase of water-in-oil invert drilling fluids.