Formulation and Study of an Environmentally Friendly Microemulsion-Based Drilling Fluid (O/W) with Pine Oil

Roxana P. F. de Sousa, Glauco S. Braga, Raphael R. da Silva, Giovanna L. R. Leal, Júlio C. O. Freitas, Vivian S. Madera, Alfredo I. C. Garnica and Fabiola D. S. Curbelo
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Roxana P. F. de Sousa: Graduate Program in Chemical Engineering (PPGEQ), Department of Chemical Engineering, Federal University of Paraíba, João Pessoa 58051-900, Brazil
Glauco S. Braga: Graduate Program in Petroleum Engineering, Department of Petroleum Engineering, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil
Raphael R. da Silva: Graduate Program in Chemical Engineering (PPGEQ), Department of Chemical Engineering, Federal University of Paraíba, João Pessoa 58051-900, Brazil
Giovanna L. R. Leal: Department of Chemical Engineering, Federal University of Paraíba, João Pessoa 58051-900, Brazil
Júlio C. O. Freitas: Chemical Institute, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil
Vivian S. Madera: Graduate Program in Civil and Environmental Engineering (PPGECAM), Federal University of Paraíba, João Pessoa 58051-900, Brazil
Alfredo I. C. Garnica: Graduate Program in Chemical Engineering (PPGEQ), Department of Chemical Engineering, Federal University of Paraíba, João Pessoa 58051-900, Brazil
Fabiola D. S. Curbelo: Graduate Program in Chemical Engineering (PPGEQ), Department of Chemical Engineering, Federal University of Paraíba, João Pessoa 58051-900, Brazil

Energies, 2021, vol. 14, issue 23, 1-22

Abstract: This work has developed and evaluated a microemulsion-based drilling fluid formulation with characteristics to be applied in oil wells. The microemulsion was formulated with a solution of water/glycerol, pine oil, and Tween 80, a nonionic and biodegradable surfactant. The physical and chemical properties of the drilling fluid obtained in this work were investigated through rheology and filtration analysis, solids content, aging, lubricity, toxicity, and thermal degradation. A non-toxic microemulsion-based drilling fluid oil-in-water (O/W) with high lubricity (0.07638) and thermal stability was obtained with suitable viscosity, gel strength and low fluid loss (4.0 mL), low solids content (6%), stability in a wide range of salinity conditions, and the possibility of high water content (above 85% in mass fraction). The fluid presented a pseudoplastic behavior, and statistically significant Herschel–Bulkley parameters were obtained.

Keywords: microemulsion; drilling fluid; pine oil; glycerol; nonionic surfactant (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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