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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10081751 B1

PDFFull Text
Date of Patent:
Sep. 25, 2018

Filed:

Apr. 01, 2016

Modification of bentonite properties for drilling fluids

Applicant:

Saudi Arabian Oil Company, Dhahran, SA;

Inventors:

Mansour A. Al-Shafei, Saihat, SA;

Akram A. Alfliow, Dhahran, SA;

Awad M. Al-Mofleh, Dhahran, SA;

Jamal M. Al-Aamri, Juaymah, SA;

Syed Rehan Ahmad Zaidi, Dhahran, SA;

Amer A. Al-Tuwailib, Dhahran, SA;

Assignee:

Saudi Arabian Oil Company, Dhahran, SA;

Attorneys:

Bracewell LLP

Constance G. Rhebergen

Kevin R. Tamm

Primary Examiner:

Frances Tischler

Int. Cl.
CPC ...
C09K 8/05 (2006.01); C01B 33/40 (2006.01); C09C 1/42 (2006.01); C09K 8/03 (2006.01);
U.S. Cl.
CPC ...
C09K 8/05 (2013.01); C01B 33/40 (2013.01); C09C 1/42 (2013.01); C09K 8/03 (2013.01);
Abstract

Disclosed is a method for modifying bentonite to allow the bentonite to be useful in drilling mud applications. The method includes the steps of: preparing bentonite local to Saudi Arabia using raw water to remove contaminants from the bentonite; grinding the bentonite to a fine powder; sieving the fine powder to be between about 50 μm and about 150 μm in particle size to produce a sieved fine powder; mixing the sieved fine powder with polyanionic cellulose polymer to produce a modified bentonite composition; adding the modified bentonite composition to water until a homogeneous solution of modified bentonite in water is formed; and allowing the homogeneous solution of modified bentonite in water to rest for about 16 hours to form a composition useful in drilling mud applications.

Find Patent Forward Citations

Al-Shafei, Mansour. (2018). Modification of bentonite properties for drilling fluids (U.S. Patent No. 10081751). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10081751

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