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Problem:

When drilling for oil or gas, a drill bit at the end of a drill stem is lowered
down-hole and rotated to drill through sand, rock, shale, etc. to a desired
depth. During the drilling process, drilling mud is pumped through the drill
stem to the drill bit. The optimum drilling mud contains oil in the form of
diesel fuel or synthetic oils, and is used to lubricate the drill bit and drill
string, stabilize the formation and carry material that is cut by the drill bit
to the surface. The return flow of the drilling mud from the drill bit to the
surface is through the space between the drill stem and the well casing.
The drilling mud, upon its return to the surface, contains small pieces of
shale, rock, sand, etc., known as cuttings.  Due to its expense, it is
desirable to recover as much of the drilling mud as possible for future use.

The cuttings, which are screened to remove most of the oil-based drilling
fluids, still retain a high percentage of oil which can contaminate both
surface and underground waters if not disposed of in an eco-friendly
manner.  This disposal method is also subject to high disposal fees.  The
methods currently used for collecting and transporting the contaminated
cuttings are highly labor intensive and unrefined, the possibility of spills is
greater and can have a negative impact on the environment.  

Solution:

The Inventors of this patent pending method have developed a complete
field-tested solution. This methodology collects and decontaminates the
drill cuttings with automated and portable units that return the expensive
oils to the drilling rig, and allows for low disposal fees at standard
disposal facilities and reduced possibilities of contaminated spills during
transport.
Drill Cutting Removal & Disposal
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