Title of Invention


Abstract A water&#8722;base fluid for use in drilling wells and other drilling operation includes a shale clay which swells in the presence of water. The fluid preferably includes&colon; an aqueous based continuous phase, and a shale hydration inhibition agent having the formula&colon; H &#8722; (OR)<SUB>x</SUB> &#8722; [&#8722;NH&#8722;CH<SUB>2</SUB>&#8722;CH<SUB>2</SUB>&#8722;CH<SUB>2</SUB>&#8722;O&#8722;CH<SUB>2</SUB>&#8722;CH<SUB>2</SUB>&#8722;NH&#8722;] &#8722; (R'O)<SUB>y</SUB> &#8722; H, wherein R and R' are independently selectable alkylene groups having 2 to 4 carbon atoms, and wherein x and y have independently selected values such that the sum of x and y is at least 1. The shale hydration inhibition agent should be present in sufficient concentration to reduce the swelling of the shale clay. The fluid may be used for formulating drilling fluids such as water&#8722;base drilling muds or clear brine drilling fluids. The fluid may also be used in the slurrification and disposal of drill cuttings that contain water swellable clays or shale clays.
Full Text


1654-CHENP-2004 FORM-13 18-06-2010.pdf

1654-chenp-2004 amended claims 18-06-2010.pdf

1654-chenp-2004 correspondence others 18-05-2010.pdf

1654-CHENP-2004 AMANDED CLAIMS 27-04-2010.pdf

1654-CHENP-2004 CORRESPONDENCE OTHERS 27-04-2010.pdf

1654-chenp-2004 correspondence others.pdf

1654-chenp-2004 correspondence po.pdf

1654-chenp-2004 description (complete) granted.pdf

1654-chenp-2004 form 1.pdf

1654-chenp-2004 form 18.pdf

1654-chenp-2004 form 3.pdf

1654-chenp-2004 form 5.pdf

1654-CHENP-2004 OTHER PATENT DOCUMENT 01-01-2010.pdf

1654-chenp-2004 other patent document 06-01-2010.pdf

1654-chenp-2004 pct.pdf

1654-chenp-2004 petition.pdf

1654-chenp-2004 power of attorney.pdf

Patent Number 242129
Indian Patent Application Number 1654/CHENP/2004
PG Journal Number 34/2010
Publication Date 20-Aug-2010
Grant Date 16-Aug-2010
Date of Filing 27-Jul-2004
Name of Patentee M-I L.L.C.
Applicant Address 5950 North Course Drive, Houston, TX 77072
# Inventor's Name Inventor's Address
1 STAMATAKIS, Emanuel 13911 Darby Cove, Houston, TX 77077
2 FRIEDHEIM, Jim 16214 Wimbledon Forest Drive, Spring, TX 77379
3 PATEL, Arvind, D 11038 Watson Mill Court, Sugarland, TX 77478
4 DAVIS, Eric 7522 San Lucas Drive, Houston, TX 77083
PCT International Classification Number C09K8/22
PCT International Application Number PCT/US2003/002902
PCT International Filing date 2003-01-31
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 10/062,071 2002-01-31 U.S.A.