Experimental study on microstructure and rheological behavior of organobentonite/oil-based drilling fluid

Ghavami, Mohammad; Hasanzadeh, Bashir; Zhao, Qian; Javadi, Sadra; Kebria, Daryoush Yousefi

doi:10.1016/j.molliq.2018.04.137

Cited by 31 publications

(12 citation statements)

References 34 publications

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“…As the R-squared values indicated in Table 3 show, all drilling fluids follow more accurately Herschel-Bulkley rheological behavior model with shear-thinning properties (n less than unity) at all temperatures. The shear-thinning behavior of the MNC-OBDFs is consistent with the previous studies on the rheological behavior of organoclay suspensions (i.e., PM199 and HDTMA-MMT [24] and B128 [49]). However, the shear-thinning behavior of the NG-OBDFs as an appropriate and positive finding is unlike the shear-thickening behavior of the NG-hydrogenated oil suspensions at shear rates up to 140 s À1 which was reported by Ho et al [33].…”

Section: Rheological Behaviorsupporting

confidence: 91%

“…According to the literature, organoclays and carbon-based NPs have the potential to enhance PV of drilling fluids. For example, more concentrations of PM199 and HDTMA-MMT organoclays provide higher PV for diesel oil [24]. By adding 17.5 cm 3 of a lubricant of NG into a salt polymer mud, its PV increases from 12 to 16 mPa s [44].…”

Section: Plastic Viscositymentioning

confidence: 99%

“…One of the most dominant challenges during drilling HPHT wells using OBDFs is to stabilize rheological properties for reducing the probability of kick, formation damage, and other hazards [15]. Organoclays that are provided after surface modification of clay minerals using organic compounds (i.e., aliphatic ammonium salts [16]), are typical additives for providing rheology for OBDFs [17][18][19][20][21][22][23][24]. There are different studies on the effect of nanosized organoclays on rheological properties of oil-based systems at high pressures and/or high temperatures [19,21,[25][26][27][28], but finding new organoclays as rheology control agent is still attractive for drilling fluid engineers.…”

Section: Introductionmentioning

confidence: 99%

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Effect of a modified nano clay and nano graphene on rheology, stability of water-in-oil emulsion, and filtration control ability of oil-based drilling fluids: a comparative experimental approach

Nooripoor

Hashemi

2020

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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During the past decade, researchers have used different Nano-Particles (NPs) due to their unique characteristics for improving formulation of Oil-Based Drilling Fluids (OBDFs). This study is the first research that investigates the effect of a Modified Nano Clay (MNC), namely CLOISITE 5 and non-functionalized Nano Graphene (NG) on rheology, electrical/emulsion stability, and filtration control ability, as the main properties of OBDFs. Initially, five concentrations of both NPs (0.25, 0.5, 1, 1.5, and 2 wt%) were added separately into an NP-free OBDF (the base fluid). Then, rheological properties and electrical stability of all prepared fluids were measured at three 90, 140, and 180 °F temperatures. Moreover, filtration test was carried out under 500 psi (3447 kPa) differential pressure and exposed to 300 °F temperature for all fluids. Since experimentally measured shear stresses followed well both Herschel Bulkley (shear-thinning) and Bingham Plastic models, effects of temperature and the NPs concentration on both model parameters are investigated more deeply in the paper. Activation energies calculated from Arrhenius model showed that MNC is more effective than NG on reducing the dependency of apparent and plastic viscosities of the base fluid on temperature. MNC, due to its amphiphilic structure, significantly stabilizes water-in-oil emulsion at all temperatures and concentrations, but NG with high electrical conductivity reduces the emulsion stability. The nanofluids containing 0.5 wt% MNC and 0.25 wt% NG which have respectively 32.6% and 43.5% fewer filtrate volumes than the base fluid, were considered as the optimal nanofluids from controlling filtration into formation aspect. Finally, MNC is applicable to enhance the formulation of the OBDF through supporting its commercial viscosifier, emulsifiers, and fluid loss control agent, but the negative effect of NG on emulsion stability limits its application.

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Section: Rheological Behaviorsupporting

confidence: 91%

Section: Plastic Viscositymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of a modified nano clay and nano graphene on rheology, stability of water-in-oil emulsion, and filtration control ability of oil-based drilling fluids: a comparative experimental approach

Nooripoor

Hashemi

2020

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Another way to hydrophobize the surface of the lamellae is to use ethoxylated non-ionic surfactants that interact electrostatically with interlamellar cations [34]. Several studies have focused on the use of bentonite as oil drilling fluid and the results obtained confirm its effectiveness for this purpose [32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Technological Evaluation of Cubati/Brazil Montmorillonite / Avaliação Tecnológica Da Montmorillonita De Cubati/Brasil

Novo

Brasileiro

Barbato

et al. 2021

BJD

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“…8,9 To control the rheological property of oilbased drilling fluids, domestic and foreign scholars have developed a series of rheology modifiers. These rheology modifiers can be classified into three types: organoclay, [10][11][12][13] gel polymers, [14][15][16][17] and polycarboxylic acid derivatives. [18][19][20][21][22] The organoclay contribute to fine solids which are detrimental to rheological properties as well as contributes to formation damage especially while drilling oil-producing zone.…”

Section: Introductionmentioning

confidence: 99%

Lipophilic rheology modifier and its application in oil‐based drilling fluids

Zhou

2021

J of Applied Polymer Sci

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Control of rheological behavior plays an important role in the process of wellbore construction and ensure the success of drilling operation. This paper reports for the first time the use of poly-amide (SMN) and poly-ester (SMO) as potential rheology modifiers. Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance, and thermogravimetric analysis have been carried out to confirm the chemical structures and properties of SMN and SMO. The results from environmental scanning electron microscope (ESEM) illustrated that SMN and SMO are lamellar structures formed by the stacking or interpenetrating of thin sheets. The atomic force microscope test results show that the network structure is formed after dissolving rheology modifier in diesel oil. Combining with the rheology and suspension measurements, it can be determined that the addition of rheology modifier exhibited obvious influence on the viscosity, thixotropy, and settlement factor of W/O emulsion. The rheology control properties and suspension stability between two rheology modifiers and traditional rheology modifier organoclay were compared. After hot rolling at 180 C, the base mud containing organoclay exhibited excellent suspension stability, but the fluid had completely lost fluidity and consolidated into a block. For SMN and SMO addition into the base formula, the rheological parameters of base mud changed moderately and the settlement of barites was not observed after standing for 24 h.

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Experimental study on microstructure and rheological behavior of organobentonite/oil-based drilling fluid

Cited by 31 publications

References 34 publications

Effect of a modified nano clay and nano graphene on rheology, stability of water-in-oil emulsion, and filtration control ability of oil-based drilling fluids: a comparative experimental approach

Effect of a modified nano clay and nano graphene on rheology, stability of water-in-oil emulsion, and filtration control ability of oil-based drilling fluids: a comparative experimental approach

Technological Evaluation of Cubati/Brazil Montmorillonite / Avaliação Tecnológica Da Montmorillonita De Cubati/Brasil

Lipophilic rheology modifier and its application in oil‐based drilling fluids

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