Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2005-11-30
2009-06-23
Kugel, Timothy J. (Department: 1796)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C536S114000, C426S629000
Reexamination Certificate
active
07550412
ABSTRACT:
The invention provides a method for producing guar gum, the method comprising the steps of: (a) sizing husk from guar seed into larger pieces and smaller pieces, (b) washing the larger pieces, (c) soaking the larger pieces, and (d) flaking the larger pieces to obtain guar gum. The invention also provides a method for processing undehusked guar splits, the method comprising the steps of: (a) dehusking undehusked guar splits to obtain dehusked guar splits and husk, and (b) sizing the husk into larger pieces and smaller pieces. The invention further provides a method for treating a subterranean formation penetrated by a wellbore, wherein the method comprises the steps of: (a) sizing husk from guar seed into larger pieces and smaller pieces; (b) washing the larger pieces; (c) soaking the larger pieces; (d) flaking the larger pieces to obtain guar gum flakes; (e) grinding the guar gum flakes to obtain guar gum powder; (f) forming a well treatment fluid, wherein the well treatment fluid comprises an aqueous fluid and the guar gum powder; and (g) introducing the well treatment fluid through the wellbore into the subterranean formation.
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PVPN 200400235, dated Jun. 3, 2004, 10 pages.
PVPO certificate for PVPN 200400235 issued Mar. 25, 2005, 1 page.
International Search Report and Written Opinion for Application No. PCT/GB2007/003813.
Morgan Rickey L.
Morgan Ronnie G.
Norman Lewis R.
Booth Albanesi & Schroeder LLC
Halliburton Energy Service,s Inc.
Kent Robert A.
Kugel Timothy J.
Toscano Alicia M
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