	US 11,725,129 B2
	Low-end rheology modifier for oil based drilling fluids
Vikrant Wagle, Dhahran (SA); Abdullah Alyami, Dhahran (SA); Omprakash Pal, Dhahran (SA); Ali Al-Safran, Dhahran (SA); and Abdulaziz Alhelal, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Jan. 6, 2022, as Appl. No. 17/647,280.
Prior Publication US 2023/0212449 A1, Jul. 6, 2023
Int. Cl. C09K 8/36 (2006.01); E21B 21/00 (2006.01)

CPC C09K 8/36 (2013.01) [E21B 21/00 (2013.01)]

18 Claims

1. An invert emulsion oil-based drilling fluid composition, comprising:

an invert emulsion of an oil phase and an aqueous phase, the oil phase including an oleaginous fluid; and

a low-end rheology modifier that is a C-36 dimer diamine dihydrochloride salt.