continued from part 1 - Controller General of Patents, Designs, and ...

(12) PATENT APPLICATION PUBLICATION (21) Application No.6290/DELNP/2008 A
(19) INDIA
(22) Date of filing of Application :18/07/2008 (43) Publication Date : 24/10/2008
(54) Title of the invention : "WELLBORE FLUID COMPRISING A BASE FLUID AND A PARTICULATE BRIDGING AGENT"
(51) International classification :C09K 8/02 (71)Name of Applicant :
(31) Priority Document No :0601961.6
1)BP EXPLORATION OPERATING COMPANY
(32) Priority Date :31/01/2006 LIMITED,
(33) Name of priority country :U.K.
Address of Applicant :CHERTSEY ROAD, SUNBURY-ON-
(86) International Application No :PCT/GB2007/000055 THAMES, MIDDLESEX TW16 7BP, GREAT BRITAIN. U.K.
Filing Date
:10/01/2007 (72)Name of Inventor :
(87) International Publication No :WO 2007/088322 1)SIMON NEIL DUNCUM,
(61) Patent of Addition to Application
Number
Filing Date
:NA
:NA
2)CHRISTOPHER ALAN SAWDON,
(62) Divisional to Application Number :NA
Filing Date
:NA
(57) Abstract :
A wellbore fluid comprising a base fluid and a particulate bridging agent comprised of a sparingly water-soluble material selected
from the group consisting of melamine (2,4,5- triamino-l,3,5-triazine), lithium carbonate, lithium phosphate (Li3P04), and magnesium
sulfite.
No. of Pages : 34 No. of Claims : 27
The Patent Office Journal 24/10/2008 25798