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

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.

Influence of sodium dodecyl sulphate on the surface and rheological behaviour of functionalised silica/polyacrylamide for drilling

“…Besides, a declining trend was observed in the contact angle of the modified PAM over various concentrations of SDS, which still retained the hydrophilic properties of the drilling fluid [14, 15]. The reduction of contact angle was influenced by the chemical nature of SDS.…”

“…2 wt% was applied to modified PAM. Subsequently, its surface tension reached almost constant at below 31.5 mN/m from 0.2 to 0.5 wt% because SDS is beyond the cmc level (0.1 wt% SDS) in the drilling fluid.Besides, a declining trend was observed in the contact angle of the modified PAM over various concentrations of SDS, which still retained the hydrophilic properties of the drilling fluid[14,15]. The reduction of contact angle was influenced by the chemical nature of SDS.…”

Curcumin: Overview of Extraction Methods, Health Benefits, and Encapsulation and Delivery Using Microemulsions and Nanoemulsions

“…After calculation of the relative quantities of the three constituents, a pseudo-ternary graph is constructed, wherein the boundaries demarcating each Winsor category are identified. The use of graphical representation facilitates the selection of the optimal water/oil/surfactant system for specific applications [196,197].…”

Stability, Rheological Behavior, and pH Responsiveness of CTAB/HCl Acidic Emulsion: Experimental Investigation

“…Surfactants are widely employed as emulsified agents for the purpose of producing tight emulsions and microemulsions that are useful in allied applications of petroleum engineering. These applications comprise of drilling engineering, enhanced oil recovery (EOR), and well stimulations. − Additionally, surfactants are utilized in the good gravel packing process and solubilization of crude oil. , Other utilities of surfactants include reducing the frictional loss in turbulent pipe flow, enhancing oil recovery rates via modifying capillary forces, and altering the wettability, and as shale-swelling inhibitors for averting unstable wellbores. − Among the latest surfactants verified is cetyltrimethylammonium bromide (CTAB), which has been established as a dependable emulsifier for petroleum engineering applications. CTAB is a cationic quaternary ammonium surfactant applicable as an emulsifying agent because of its micelle-forming capability in an aqueous solution.…”