Waste disposal of contaminated drill cuttings from geological drilling using drilling fluid systems containing mineral oil
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United States of America Patent
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May 26, 1998
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app pub date -
Jan 15, 1997
filing date -
Jan 13, 1992
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Abstract
Described is the use of ecologically compatible, and more particularly of biologically degradable, oils having flash points of above 80.degree. C. for washing mineral oil-loaded drill cuttings prior to the disposal thereof by off-shore and/or on-shore deposition. For the use as wash oils there are preferred aerobically and/or anaerobically degradable low-viscosity oils are employed which are also suitable for being used as a mixture component of the continuous oil phase of W/O invert drilling fluids.
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