Title of Invention | HIGH PERFORMANCE WATER BASED DRILLING MUD AND METHOD OF USE |
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Abstract | A water−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: an aqueous based continuous phase, and a shale hydration inhibition agent having the formula: H − (OR)<SUB>x</SUB> − [−NH−CH<SUB>2</SUB>−CH<SUB>2</SUB>−CH<SUB>2</SUB>−O−CH<SUB>2</SUB>−CH<SUB>2</SUB>−NH−] − (R'O)<SUB>y</SUB> − 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−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. |
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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 OTHER PATENT DOCUMENT 01-01-2010.pdf
1654-chenp-2004 other patent document 06-01-2010.pdf
1654-chenp-2004 power of attorney.pdf
Patent Number | 242129 | |||||||||||||||
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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 | |||||||||||||||
Inventors:
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PCT International Classification Number | C09K8/22 | |||||||||||||||
PCT International Application Number | PCT/US2003/002902 | |||||||||||||||
PCT International Filing date | 2003-01-31 | |||||||||||||||
PCT Conventions:
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