LEAL, C. A.; http://lattes.cnpq.br/8919502201386990; LEAL, Caline Alves.
Résumé:
This study aimed to evaluate the performance of an emulsifier based on soybean oil
sludge (EBO) in synthetic drilling fluid to n-paraffin base. The study of the emulsifier
was conducted in three distinct stages: first, the characterization of the emulsifier
through the TGA , DTA and FTIR tests; second, the evaluation of the emulsifier
according to the standard EP-1EP-00028-Petrobras norm; and the third and last
stage, the evaluation of the emulsifier according to the industry formulations which
were evaluated by the rheological properties (apparent viscosities (AV), plastic
viscosity (PV), yield limit (YL) and gel strength (GS)), the electrical stability (ES) and
the filtrate volume HPHT (VF). From the results obtained it can be concluded that: the
emulsifier obtained from soybean oil sludge (EBO) is formed from fatty acids with HC, C-O, C = O and C = C bond types, with peaks intensities and positions similar to
pure soybean oil, with three-step thermal decomposition: The First Regarding Volatil
loss material, the second carbonaceous matter ea Third thermal decomposition do
EBO. Soybean oil sludge can be used as a primary emulsifier for synthetic drilling
fluids and finally the EBO emulsifier with highest efficiency rheological properties (AV,
PV, YL and GS) and filtering (FV) or synthetic fluids with water oil ratio 60/40.
However, when it comes EE best results were obtained with a ratio of oil to water
fluid 70/30.
