Modification of palygorskite with cationic and nonionic surfactants for use in oil-based drilling fluids

Buriti, Bruna Michele Arruda de Brito; Barsosa, Maria Eduarda; Buriti, Josué da Silva; Cartaxo, Juliana de Melo; Ferreira, H. S.; Neves, G. A.

doi:10.1007/s10973-021-10701-w

Cited by 14 publications

(6 citation statements)

References 47 publications

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“…The exception was an endothermic peak at 398 • C, attributed to the SO 3 anion loss referring to sulfuric acid. It was also observed that the organo-functionalized sample (Figure 2d) showed exothermic peaks at 272 • C and 342 • C, attributed to the combustion and decomposition of the surfactant, respectively, corroborating with studies of [72].…”

Section: Specific Surface Area By N2 Adsorption (Bet)supporting

confidence: 83%

“…The BET area and average pore diameter in the acidfunctionalized sample increased, with a probability of an increase in the active adsorption sites, due to the removal of impurities (oxides) by leaching of octahedral cations [40]. On the other hand, the organo-functionalized sample showed a decrease in surface area values, which may infer that the surfactant loading has an influence the surface characteristic, where a similar result was reported by [72]. The raw sample presents values of the specific surface similar to literature [73].…”

Section: Specific Surface Area By N 2 Adsorption (Bet)supporting

confidence: 78%

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Adsorption of Sodium Diclofenac in Functionalized Palygoskite Clays

et al. 2022

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The effects of acid and organo-functionalizations on the surface of Brazilian palygorskite clay was investigated, evaluating its potential in the adsorptive capacity of the drug sodium diclofenac present in wastewaters. The modifications on the clay structure were investigated by X-ray diffraction, X-ray fluorescence, thermogravimetric, differential thermal analysis, Fourier transform infrared spectroscopy, surface area by N2 adsorption (77.5 K) and Zeta potential. The experimental design was carried out to find the best conditions for the adsorption tests, in which concentration, mass and pH were significant. In the kinetic study, the pseudo-second-order model better described the adsorption process for acid and organo-functionalized samples. Such results indicate that the adsorption behavior probably occurs due to the phenomenon of chemisorption. Regarding the adsorption isotherms, the Langmuir model was the one that best adjusted both the experimental data of acid and the organo-functionalized samples, whose maximum adsorption capacity were 179.88 and 253.34 mg/g, respectively. This model also indicates that the sodium diclofenac is adsorbed to monolayers homogeneously through chemisorption. In general, the studied clays proved to be suitable adsorbents for the removal of sodium diclofenac.

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Section: Specific Surface Area By N2 Adsorption (Bet)supporting

confidence: 83%

Section: Specific Surface Area By N 2 Adsorption (Bet)supporting

confidence: 78%

Adsorption of Sodium Diclofenac in Functionalized Palygoskite Clays

et al. 2022

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“…In addition, compared to the house of cards structure of OMMT, OPAL exhibits excellent thermal stability due to the haystack structure in OBDFs. 79,88 de Brito Buriti et al 89 discussed the synthesis and characterization of OPAL using cationic and nonionic surfactants for use as an additive in OBDFs. The objective of the study was to determine the rheological properties and thermal stabilities of the resulting dispersions.…”

Section: Application Of Organo-sepiolite (Osep) and Organo-palygorski...mentioning

confidence: 99%

Application of Organoclays in Oil-Based Drilling Fluids: A Review

Mahmoud,

Gajbhiye,

Elkatatny

2023

ACS Omega

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Organoclays (OCs), formed by surface modification of clay minerals using organic compounds, are typical additives for providing rheology for oil-based drilling fluids (OBDFs). There are different studies on the effect of OCs on the rheological properties of oil-based systems under high-pressure, high-temperature (HPHT) conditions, but finding new OCs as rheology control agents is attractive for drilling fluid engineers. This work reviews different OCs used in OBDFs, namely, organo-montmorillonite (OMMT), organo-sepiolite (OSEP), and organo-palygorskite (OPAL). Furthermore, the structure of OCs in OBDFs, their rheological properties, and the thermal stability of OCs were investigated. Besides, the role of fibrous and layered OCs in enhancing the rheological properties of OBDFs is illustrated. Finally, the synergistic use of different OCs to enhance the thermal stability and rheological properties of the OBDFs is presented. The study highlights research gaps and recommendations for research approaches and potential areas that need further investigation. The application of OCs in OBDFs is a wide field and has huge potential to be developed. The use of OCs in OBDFs will promote development in the oil and gas industry.

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“…Organoclays (OCs) are used as additives to control the rheological properties and enhance the performance of drilling fluids, particularly in OBDFs and synthetic-based drilling fluids (SBDFs), due to their ability to adsorb and stabilize oil droplets and other nonpolar substances within the fluid. − …”

Section: Introductionmentioning

confidence: 99%

Evaluating the Effect of Claytone-EM on the Performance of Oil-Based Drilling Fluids

Mahmoud,

Gajbhiye,

Elkatatny

2024

ACS Omega

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This study provides a detailed characterization and evaluation of Claytone-EM as a rheological additive to enhance the performance of oil-based drilling fluids (OBDFs) under high-pressure, high-temperature (HPHT) conditions. It also offers a comparative evaluation of the effectiveness of Claytone-EM with an existing organoclay, analyzing their mineral and chemical compositions, morphologies, and particle sizes. A series of experiments are performed to evaluate Claytone-EM’s influence on crucial drilling mud properties, such as mud density, electrical stability, sagging tendency, rheology, viscoelastic properties, and filtration properties, to formulate a stable and high-performing OBDF. Results indicated that Claytone-EM had no significant impact on mud density but remarkably enhanced emulsion stability. Claytone-EM effectively mitigated sagging issues under both static and dynamic conditions, leading to improvements in the plastic viscosity (PV), yield point (YP), apparent viscosity (AV), and YP/PV ratio. The PV, YP, AV, and YP/PV ratios were improved by 11, 85, 28, and 66% increments, respectively, compared with those of the drilling fluid formulated with MC-TONE. The addition of Claytone-EM resulted in enhancing gel strength and improving the filtration properties of the drilling fluid. The filtration volume was reduced by 2% from 5.0 to 4.9 cm3, and the filter cake thickness had a 13% reduction from 2.60 to 2.26 mm. These findings highlight Claytone-EM as a valuable additive for enhancing OBDF performance, particularly under challenging HPHT conditions. Its ability to provide emulsion stability, reduce static and dynamic sag, and control filtration holds the potential to enhance drilling operations, minimize downtime, and bolster wellbore stability. This study acknowledges certain limitations, including its temperature range, which could benefit from exploration at extreme temperatures. Additionally, the absence of flow experiments limits a comprehensive understanding of sag effects, and further research and field-scale evaluations are recommended to validate and optimize the application of Claytone-EM in OBDFs.

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Modification of palygorskite with cationic and nonionic surfactants for use in oil-based drilling fluids

Cited by 14 publications

References 47 publications

Adsorption of Sodium Diclofenac in Functionalized Palygoskite Clays

Adsorption of Sodium Diclofenac in Functionalized Palygoskite Clays

Application of Organoclays in Oil-Based Drilling Fluids: A Review

Evaluating the Effect of Claytone-EM on the Performance of Oil-Based Drilling Fluids

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