Boring or penetrating the earth – Processes – Sampling of earth formations
Patent
1988-06-30
1989-07-18
Novosad, Stephen J.
Boring or penetrating the earth
Processes
Sampling of earth formations
175 65, C09K 700, E21B 700
Patent
active
048484873
ABSTRACT:
A core sample of an earth formation is obtained by drilling with a coring bit and circulating a coring fluid through the coring bit. The coring fluid contains no mud solids for contaminating the core sample or, in the alternative, contains drilling mud mixed with a bulk material which invades the core sample and occupies the core sample pore spaces preferentially over mud solids. This bulk material is more readily removed from the core sample by cleaning than mud solids.
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Anderson Maynard L.
Sprunt Eve S.
Wilson Peggy M.
Wooten Susan O.
Hager Jr. George W.
McKillop Alexander J.
Mobil Oil Corporation
Novosad Stephen J.
Speciale Charles J.
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