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.:
Date of Patent:
Aug. 09, 2022
Filed:
Sep. 23, 2019
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Muhammad Shahzad Kamal, Dhahran, SA;
Mamdouh A. Al-Harthi, Dhahran, SA;
Hafiz Mudaser Ahmad, Dhahran, SA;
S. M. Shakil Hussain, Dhahran, SA;
Mohamed Mahmoud, Dhahran, SA;
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran, SA;
Abstract
A drilling fluid formulation which includes an aqueous phase, and additives including an organophilic clay, a gemini surfactant, and a polyacrylamide. The organophilic clay contains an ion-exchange reaction product of a clay material (e.g. smectite) and quaternary ammonium cations. The polyacrylamide contains reacted units of an acrylamide monomer, an acrylate monomer, and a hydrophobicity modifying monomer. Rheology properties of the drilling fluid including gel strength, yield stress, and storage modulus are specified. The additives present in the drilling fluid synergistically boost its shale swelling inhibition capability.