Application of Ester based Drilling Fluid for Shale Gas Drilling

Sauki, Arina; Shah, Mohamad Safwan Zazarli; Bakar, Wan Zairani Wan

doi:10.1088/1757-899x/83/1/012012

Cited by 10 publications

(6 citation statements)

References 5 publications

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“…This supports the theory behind the addition of nanoparticles to reduce the loss by plugging the small pores, as they have been pushed by the pressure difference between the wellbore and the formation. The PMDF, Sarapar-based drilling fluid, and the WBDF that were studied by Sauki et al [15], showed fluid loss volumes of 3.9 mL, 3.5 mL, and 17.8 mL, respectively, at 30 min, which are higher filtrate volumes compared to the EBDF in this study. In addition, the filter cake thickness was reduced with increasing concentrations of nanoparticles, from 2.41 mm to 1.05 mm (50% reduction), as shown in Figure 12c.…”

Section: Filtration Loss At Npntsupporting

confidence: 40%

“…An ester/water ratio of 80:20, with ester as the continuous phase and brine (water and calcium chloride) as the emulsified phase, was used in this study. Based on previous studies by Sauki et al [15], this ester/water ratio generates rheological properties comparable to a commercial drilling fluid called "Sarapar-based drilling fluid". Since it is a non-aqueous drilling fluid, the choice and performance of the emulsifier used to stabilize the coexistence of ester and water was a vital factor that directly affected the performance of the drilling fluid.…”

Section: Methodsmentioning

confidence: 90%

“…Sustainability 2021, 13, x FOR PEER REVIEW 10 of 18 rheological properties of the palm methyl ester-based drilling fluid (PMDF), Saraparbased drilling fluid (a commercial OBDF), and a WBDF, reported by Sauki et al [15]. All these samples have similar mud weights; however, the Sarapar-based drilling fluid, PMDF, and WBDF displayed higher and progressive gel strength properties compared to the EBDF (T26.8N0).…”

Section: Rheological Properties In Npnt Conditionsmentioning

confidence: 94%

“…Sauki et al [15] studied the use of C 12 -C 14 palm oil-derived esters. In their research, the oil/water ratio content in the drilling fluid was maneuvered to select the preeminent EBDF.…”

Section: Ester-based Drilling Fluidsmentioning

confidence: 99%

“…The rheological properties of the EBDF were analyzed against the A comparison of the rheological properties of the base EBDF with previous studies is shown in Figure 5. The rheological properties of the EBDF were analyzed against the rheological properties of the palm methyl ester-based drilling fluid (PMDF), Sarapar-based drilling fluid (a commercial OBDF), and a WBDF, reported by Sauki et al [15]. All these samples have similar mud weights; however, the Sarapar-based drilling fluid, PMDF, and WBDF displayed higher and progressive gel strength properties compared to the EBDF (T26.8N0).…”

Section: Rheological Properties In Npnt Conditionsmentioning

confidence: 99%

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Developing a Thermally Stable Ester-Based Drilling Fluid for Offshore Drilling Operations by Using Aluminum Oxide Nanorods

et al. 2021

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Esters were found to be promising alternatives to oil, as a constituent of drilling fluids, due to their biodegradability and bioaccumulation attributes. In this study, we used ethyl octanoate ester (EO) as a low molecular weight synthetic oil for formulating an ester-based drilling fluid (EBDF). Aluminum oxide nanorods (nanoparticles) were introduced as a Pickering emulsion stabilizer. Like the commercial emulsifiers, they showed that they stabilized the invert emulsion drilling fluid in our study. The rheological and filtration properties of the EBDF were tested at normal pressure and three temperatures: low temperature deepwater (LT) conditions of 2.6 °C, normal pressure and normal temperature (NPNT) conditions of 26.8 °C, and elevated temperature conditions of 70 °C. To enhance the stability and filtration properties of the drilling fluid, aluminum oxide nanoparticles (NPs) were used. An optimum concentration of 1 wt% was found to provide superior rheological performance and higher stability than samples without NPs at NPNT, LT, and elevated temperature conditions. Steadier gel rheology was exhibited at elevated temperature conditions, and a slow rate of an increasing trend occurred at the lower temperatures, with increasing NP concentrations up to 1.5 wt%. Filtration loss tests presented a reduction of fluid loss with increasing the NP concentration. The results demonstrate that a reduction of up to 45% was achieved with the addition of 1 wt% NP. These results show that nano-enhancement of ethyl octanoate drilling fluids would suffice to provide a wider range of operational temperatures for deepwater drilling operations by providing better thermal stability at elevated temperatures and maintaining stability at lower temperatures.

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Section: Filtration Loss At Npntsupporting

confidence: 40%

Section: Methodsmentioning

confidence: 90%

Section: Rheological Properties In Npnt Conditionsmentioning

confidence: 94%

“…Sauki et al [15] studied the use of C 12 -C 14 palm oil-derived esters. In their research, the oil/water ratio content in the drilling fluid was maneuvered to select the preeminent EBDF.…”

Section: Ester-based Drilling Fluidsmentioning

confidence: 99%

Section: Rheological Properties In Npnt Conditionsmentioning

confidence: 99%

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