Boring or penetrating the earth – Processes – Boring with specific fluid
Patent
1989-03-28
1991-04-09
Suchfield, George A.
Boring or penetrating the earth
Processes
Boring with specific fluid
134 10, 134 40, 134109, 210634, B01D 1100, B08D 308, C09K 700, E21B 2106
Patent
active
050056557
ABSTRACT:
1,1-dichloro-2,2,2-trifluoroethane or 1,1-dichloro-1-fluoroethane are employed as solvents to remove oleophylic material from mineral particulates. In one aspect the method of this invention includes the steps of transporting oil-based mud-laden cuttings to a solid feed tank wherein the oil-based cuttings are subjected to turbulent mixing to leave the surface of the cuttings substantially free of oil. The cuttings are then subjected to countercurrent flow of solvent in order to separate oily solvent and fines smaller than a chosen diameter from the heavier solids. The heavier solids are cleaned of any remaining oil-based muds, separated from cleaning solvent and ultimately returned to the sea environment.
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Flanigan David A.
Huycke John
Ramsey Robert B.
Stokke Olaf M.
Williams Robert E.
Conoco Inc.
Reinert A. Joe
Suchfield George A.
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