	US 11,866,638 B2
	Drilling fluid composition comprising vegetable derivatives
Marcela Zaira Mucci, Ciudad Autónoma de Buenos Aires (AR); Leandro Ariel Sanz, Quilmes (AR); Luciana Martina García Eiler, Berisso (AR); and Manuel Ramiro Sanz, Berazategui (AR)
Assigned to YPF TECNOLOGÍA S.A., Ciudad Autónoma de Buenos Aires (AR)
Filed by YPF TECNOLOGÍA S.A., Ciudad Autónoma de Buenos Aires (AR)
Filed on Aug. 25, 2022, as Appl. No. 17/895,926.
Claims priority of provisional application 63/236,820, filed on Aug. 25, 2021.
Prior Publication US 2023/0064252 A1, Mar. 2, 2023
Int. Cl. C09K 8/36 (2006.01)

CPC C09K 8/36 (2013.01)

9 Claims

1. A drilling fluid composition comprising a continuous phase and a disperse phase, the continuous phase comprising fatty acid methyl esters derived from soy oil, and sunflower lecithin as an emulsifier, and the disperse phase comprising a brine solution comprising 20% CaCl₂) in weight.

7. A method for increasing the electrical stability of a drilling fluid composition comprising a continuous phase and a disperse phase, the continuous phase comprising fatty acid methyl esters derived from soy oil and the disperse phase comprising a brine solution comprising 20% CaCl₂) in weight, the method comprising adding sunflower lecithin as an emulsifier to reach a concentration of about 4% to about 6% in volume.