US 12,473,481 B1
Metal oxide nanoshale inhibitors for water-based drilling fluids
Hassan Sakar Alqahtani, Dhahran (SA); Mohammed Khaled Al-Arfaj, Dhahran (SA); Ali Hussain Alghiryafi, Dhahran (SA); and Mohammed Abdullah Alotaibi, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on May 14, 2024, as Appl. No. 18/664,209.
Int. Cl. E21B 43/16 (2006.01); C09K 8/06 (2006.01); C09K 8/58 (2006.01)
CPC C09K 8/06 (2013.01) [C09K 8/58 (2013.01); E21B 43/16 (2013.01); C09K 2208/10 (2013.01); C09K 2208/12 (2013.01)] 16 Claims
 
1. A comprising:
introducing a treatment fluid into a subterranean formation comprising a clay, the treatment fluid comprising a plurality of silicon dioxide nanoparticles and other metal oxide nanoparticles dispersed in an aqueous fluid, wherein the other metal oxide nanoparticles comprise: zinc oxide nanoparticles, manganese oxide nanoparticles, or any combinations thereof; and
interacting the plurality of silicon dioxide nanoparticles and other metal oxide nanoparticles with the clay in the subterranean formation to at least partially inhibit entry of the clay into the treatment fluids,
wherein the silicon dioxide nanoparticles have an average particle size of about 70 nm to about 90 nm, wherein the zinc oxide nanoparticles have an average particle size of about 90 nm to about 200 nm, and wherein the manganese oxide nanoparticles have an average particle size of about 30 nm to about 60 nm.