BAKER HUGHES - Drilling Fluids Reference Manual

FLUIDS ENVIRONMENTAL SERVICES
is an integral pump on the skid, which provides the capability of feeding the filters directly from the
slop holding tanks.
For small volume applications:
• Filtration skid for solids and oil removal
For large volume applications:
• Filtration skid for solids removal
• Separator unit for oil removal
Handling OBM Slops Onshore
All contaminated water returned to shore for treatment can be transferred to a holding tank for
analysis. Once the extent of the contamination has been established then appropriate treatment can be
undertaken.
The standard cleaning process is to pump the fluid through a mixing tank while injecting a coalescing
agent. The fluid then flows into a separation flotation tank where the oil is skimmed off and collected
in a waste oil storage tank. The aqueous phase and settled “oil wet” solids will be passed through a
D.E. filter press to remove the solids.
The water collected will be pumped through an oil specific filtration medium and activated charcoal
filters. The water will then be analyzed to confirm that the oil concentration is