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OIL RECOVERY FROM FRACTURED MATRIX RESERVOIRS
US 3,498,378 A
Filed
: 06/09/1967
Issued
: 03/03/1970
Est. Priority Date
: 06/09/1967
Status: Expired due to Term
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41
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41 Citations
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Current Assignee
Herbert L. Stone
,
John W. Graham
,
Robert J. Blackwell
Original Assignee
Herbert L. Stone
,
John W. Graham
,
Robert J. Blackwell
Inventors
Stone, Herbert L.
,
Graham, John W.
,
Blackwell, Robert J.
Application Number
US04/644,897
Time in Patent Office
998 Days
Field of Search
US Class Current
166/263
CPC Class Codes
E21B 43/18
Repressuring or vacuum methods
E21B 43/20
Displacing by water
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