Recovery of drilling fluids
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United States of America Patent
Stats
-
Mar 11, 1980
Grant Date -
N/A
app pub date -
Feb 21, 1978
filing date -
Feb 24, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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