Application of SDS surfactant microemulsion for removal of filter cake of oil-based drilling fluid: influence of cosurfactant

After drilling oil wells using oil-based drilling fluid, there is the occurrence of a formation of a thin layer of solids adsorbed on the surface, called filter cake, which must be removed to obtain satisfactory well cementation. The present work developed microemulsion systems from sodium dodecyl s...

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Bibliographic Details
Published inJournal of petroleum exploration and production technology Vol. 10; no. 7; pp. 2845 - 2856
Main Authors da Silva, Valdic Luiz, Ribeiro, Laís Sibaldo, de Oliveira Freitas, Júlio Cezar, da Silva, Daniel Nobre Nunes, de Carvalho, Luciene Santos, Rodrigues, Marcos Allyson Felipe, Wanderley Neto, Alcides de Oliveira
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 01.10.2020
Springer Nature B.V
SpringerOpen
Subjects
Biodegradability
Biodegradation
Butanol
Cementation
Distilled water
Drilling
Drilling fluids
Earth and Environmental Science
Earth Sciences
Energy Systems
Filter cake
Flushing fluid
Geology
Industrial and Production Engineering
Industrial Chemistry/Chemical Engineering
Kerosene
Micelles
Microemulsion
Microemulsions
Monitoring/Environmental Analysis
Offshore Engineering
Oil wells
Original Paper-Exploration Engineering
SDS
Sodium
Sodium dodecyl sulfate
Surfactants
Thermal stability
Water purification
Wettability
SDS
Microemulsion
Flushing fluid
Filter cake
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Summary:After drilling oil wells using oil-based drilling fluid, there is the occurrence of a formation of a thin layer of solids adsorbed on the surface, called filter cake, which must be removed to obtain satisfactory well cementation. The present work developed microemulsion systems from sodium dodecyl sulfate, a biodegradable surfactant, with kerosene as oil phase, n-butanol as cosurfactant and distilled water, in order to evaluate its efficiency in removing the filter cake. The results showed that the microemulsion systems composed of inverse and bicontinuous micelles removed 100% of the filter cake regardless of the content of the constituents in the formulation, while the direct micelles only reached 100% with the formulation composed by 10% kerosene and cosurfactant/surfactant ratio = 4. It was observed that the cosurfactant/surfactant ratio is a determining variable for direct micelles to remove 100% of the filter cake and that they are compatible with cement, offering desirable thermal stability and improving the wettability of the rock in water.
ISSN:2190-0558
2190-0566
DOI:10.1007/s13202-020-00952-y