Hydrophobic silica nanoparticle-stabilized invert emulsion as drilling fluid for deep drilling

Dargahi-Zaboli, Maliheh; Sahraei, Eghbal; Pourabbas, Behzad

doi:10.1007/s12182-016-0135-0

Cited by 26 publications

(11 citation statements)

References 23 publications

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“…Recently, for non‐Newtonian fluids, many mathematical models were developed and applied to fit the relationship between shear stress and shear rate. Generally, Bingham, Power‐law and Herschel–Bulkey were commonly used in drilling fluid system . However, for a complex drilling fluid system, it was found that the Bingham plastic model is inadequate, because the relationship between the shear stress and shear rate is no longer linear.…”

Section: Methodsmentioning

confidence: 99%

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Preparation, characterization, and investigation of poly(AMPS/AM/SSS) on application performance of water‐based drilling fluid

Huo

Feng

et al. 2018

J of Applied Polymer Sci

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Based on the requirement of the synthesized polymer resistant to higher temperature and lower cost demand of water-based drilling fluid system, a novel polymer, which named poly(AMPS/AM/SSS), was synthesized using acrylamide (AM), 2-acrylamido-2methylpropanesulfonic acid (AMPS), and p-styrenesulfonate (SSS). At first, the molecular structure was investigated through Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance hydrogen spectroscopy ( 1 H-NMR) and element analysis. Simultaneously, the molecular weight and distribution was obtained by gel chromatography method. Moreover, the thermal stability was produced by thermal analysis (TG). Secondly, the poly(AMPS/AM/SSS) was introduced into water-based drilling fluid system. As a result, it was shown that the use of poly(AMPS/AM/SSS) significantly improved the filtration performance of drilling fluid system. When the adding amount is 1.2 wt %, the FL API of drilling fluid system is 9.20 mL. Moreover, it was found that the flow curve of water-based drilling fluid systems are more fitted to the Herschel-Bulkley flow model. Besides, the temperature resistance of water-based drilling fluid system was obviously improved. Furthermore, it was confirmed that the cost of water-based drilling fluid system was significantly reduced. During this study, the filtration mechanism of the synthesized poly(AMPS/AM/SSS) was studied by adsorption analysis, Zeta potential method, and morphology analysis.

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Section: Methodsmentioning

confidence: 99%

“…Simultaneously, it was also found that the Power‐law model is not accurate to fit the rheological curves due to lack of yield point, especially at the low shear rates. Thus, the Herschel–Bulkey model was developed and employed, which are given by eq. .…”

Section: Methodsmentioning

confidence: 99%

Preparation, characterization, and investigation of poly(AMPS/AM/SSS) on application performance of water‐based drilling fluid

Huo

Feng

et al. 2018

J of Applied Polymer Sci

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“…It is well known that emulsions could be stabilized by particles called Pickering emulsions [13]. A wide range of particles was investigated for emulsion stability [14][15][16][17]. Recently, the surfactant-nanoparticle combined impact on emulsion stability has been highlighted [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Effects of Surfactant and Hydrophobic Nanoparticles on the Crude Oil-Water Interfacial Tension

Jiang

Liu

et al. 2021

Energies

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Surfactants and nanoparticles play crucial roles in controlling the oil-water interfacial phenomenon. The natural oil-wet mineral nanoparticles that exist in crude oil could remarkably affect water-oil interfacial characteristics. Most of recent studies focus on the effect of hydrophilic nanoparticles dispersed in water on the oil-water interfacial phenomenon for the nanoparticle enhanced oil recovery. However, studies of the impact of the oil-wet nanoparticles existed in crude oil on interfacial behaviour are rare. In this study, the impacts of Span 80 surfactant and hydrophobic SiO2 nanoparticles on the crude oil-water interfacial characteristics were studied by measuring the dynamic and equilibrium crude oil-water interfacial tensions. The results show the existence of nanoparticles leading to higher crude oil-water interfacial tensions than those without nanoparticles at low surfactant concentrations below 2000 ppm. At a Span 80 surfactant concentration of 1000 ppm, the increase of interfacial tension caused by nanoparticles is largest, which is around 8.6 mN/m. For high Span 80 surfactant concentrations, the less significant impact of nanoparticles on the crude oil-water interfacial tension is obtained. The effect of nanoparticle concentration on the crude oil-water interfacial tension was also investigated in the existence of surfactant. The data indicates the less significant influence of nanoparticles on the crude oil-water interfacial tension at high nanoparticle concentration in the presence of Span 80 surfactant. This study confirms the influences of nanoparticle-surfactant interaction and competitive surfactant molecule adsorption on the nanoparticles surfaces and the crude oil-water interface.

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“…With the development of petroleum exploration and exploitation toward a deeper formation, the quantity of deep and ultra-deep wells is ever-increasing [1][2][3]. One critical issue of successful deep well drilling is to enhance the rate of penetration (ROP) and lower drilling costs [4].…”

Section: Introductionmentioning

confidence: 99%

Study on the Impact Pressure of Swirling-Round Supercritical CO2 Jet Flow and Its Influencing Factors

Yang

Liu²,

Mao

et al. 2020

Energies

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Supercritical carbon dioxide (SC-CO2) jet is capable of decreasing the threshold pressure of rock breakage and mitigating formation damage, owing to its low viscosity, high diffusivity, and extremely-low surface tension. The swirling-round jet holds the advantages of both a swirling jet and a round jet. Therefore, the comprehensive technique, swirling-round SC-CO2 (SR-SC-CO2) jet, is expected to substantially enhance rock-breaking efficiency. However, theoretical analysis of the flow field characteristics of SR-SC-CO2 has not been reported yet. This work aims to lay a theoretical foundation for employing SR-SC-CO2 in drilling and fracturing. The flow field is simulated using Naiver-Stokes equations and the RNG k-ε turbulence model. Sensitivity analysis, regarding pressure drop of the nozzle, confining pressure, fluid temperature, jetting distance, the diameter of the nozzle’s central hole, and grooving area, are performed. We show that the combined swirling-round SC-CO2 jet flow could maintain a relatively larger axial as well as tangential velocity compared to a single approach of swirling jet or round jet, enabling one to acquire a deeper oillet and expand the perforation area effectively. The simulation results substantiate the enormous potential of SR-SC-CO2 in improving rock-breaking efficiency and clarify the influence of relevant parameters on the impact pressure of the jet flow.

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Hydrophobic silica nanoparticle-stabilized invert emulsion as drilling fluid for deep drilling

Cited by 26 publications

References 23 publications

Preparation, characterization, and investigation of poly(AMPS/AM/SSS) on application performance of water‐based drilling fluid

Preparation, characterization, and investigation of poly(AMPS/AM/SSS) on application performance of water‐based drilling fluid

Effects of Surfactant and Hydrophobic Nanoparticles on the Crude Oil-Water Interfacial Tension

Study on the Impact Pressure of Swirling-Round Supercritical CO2 Jet Flow and Its Influencing Factors

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