Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
Reexamination Certificate
2008-11-26
2011-12-06
Kugel, Timothy J. (Department: 1761)
Earth boring, well treating, and oil field chemistry
Earth boring
Contains organic component
C507S103000, C507S117000, C507S118000, C507S119000, C507S136000, C507S139000, C507S141000, C507S145000, C175S065000, C175S072000, C166S305100
Reexamination Certificate
active
08071509
ABSTRACT:
The present invention relates to glycerol based drilling fluids. In particular, the invention relates to drilling fluids comprising a 95-20 volume % glycerol/water solution capable of stabilizing water-sensitive formations during drilling and the use of such solutions for drilling a well having water-sensitive formations.
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Admasu Atnaf
Engineered Drilling Solutions Inc.
Kugel Timothy J.
St. Onge Steward Johnston & Reens LLC
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