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Recovery of drilling fluids

Patent ·
OSTI ID:5630180
; ;
A description is given of a method for the recovery of drilling fluid from the mud leaving the well. The mud is first subjected to conventional separation on screens, settling tanks and/or hydrocyclones, whereafter the resulting liquid is centrifuged. The centripetal effluent of the centrifuge is recycled, alone of in mixture with non-centrifuged liquid, to the drilling tool. The process is applicable to drilling on land and at sea, saves drilling additives, avoids the need for the maintenance of mud tips, transportation of spent mud and avoids pollution.
Assignee:
Nationale Elf Aquitaine (production)(France)
Patent Number(s):
US 4192392
OSTI ID:
5630180
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CENTRIFUGATION
CONCENTRATORS
CYCLONE SEPARATORS
DRILLING
DRILLING FLUIDS
EQUIPMENT
FLUIDS
INERTIAL SEPARATORS
NATURAL GAS WELLS
OIL WELLS
POLLUTION CONTROL EQUIPMENT
RECOVERY
SCREENS
SEPARATION EQUIPMENT
SEPARATION PROCESSES
WELL DRILLING
WELLS