Counterion-specific shale hydration inhibiting performance of vinylimdazolium ionic liquids

Yang, Lili; Kong, Dechang; Chang, Xiangyang; Jiang, Guancheng; Ao, Tian; Xie, Chiyu; Moukoko, Aurchy Dauriant Kinkeyi; Ma, Jiaze

doi:10.1016/j.molliq.2021.116544

Cited by 10 publications

(7 citation statements)

References 32 publications

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“…Surfactants, while having strong foaming capabilities, face limitations in their widespread adoption [25]. Ionic liquids exhibit robust hydration inhibition, but their high cost hinders large-scale applications [26]. Amines, due to the adsorption of amine groups on shale surfaces through electrostatic forces and hydrogen bonding, demonstrate strong hydration inhibition and have garnered significant attention [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Aminated Nano-Silica as a Novel Shale Stabilizer to Improve Wellbore Stability

Li,

Xu,

Pei

et al. 2024

Materials

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The issue of wellbore instability poses a significant challenge in the current exploration of shale gas reservoirs. Exploring more efficient shale stabilizers has always been a common goal pursued by researchers. In this paper, a novel shale stabilizer, denoted as ANS, was prepared by employing a silane-coupling modification method to graft (3-Aminopropyl) triethoxysilane (APTES) onto the surface of nano-silica. The structure of ANS was characterized through Fourier transforms infrared spectroscopy (FT-IR), thermo-gravimetric analysis (TGA), and particle size tests (PST). The shale stabilizing properties of ANS were evaluated through tests such as pressure penetration, BET analysis, hydration expansion and dispersion. Furthermore, the interaction between ANS as a shale stabilizer and clay was explored through clay zeta potential and particle size analysis. The results indicated that ANS exhibited a stronger plugging capability compared to nano-silica, as evidenced by its ability to increase the shale pressure penetration time from 19 to 131 min. Moreover, ANS demonstrated superior hydration inhibition compared to commonly used KCl. Specifically, it reduced the expansion height of bentonite from 8.04 to 3.13 mm and increased the shale recovery rate from 32.84% to 87.22%. Consequently, ANS played a dual role in providing dense plugging and effective hydration inhibition, contributing significantly to the enhancement of wellbore stability in drilling operations. Overall, ANS proved to be a promising shale stabilizer and could be effective for drilling troublesome shales.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Aminated Nano-Silica as a Novel Shale Stabilizer to Improve Wellbore Stability

Li,

Xu,

Pei

et al. 2024

Materials

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“…Recently, our group investigated the influence of anion type in vinylimidazolium-based ILs on the shale inhibiting performance. Several ILs with different anions such as bromide (Br – ), tetrafluoroborate (BF 4 – ), hexafluorophosphate (PF 6 – ), and bis(trifluoromethylsulfonyl) (TFSI – ) were systematically studied . According to the results obtained, IL with a bromide anion exhibited remarkable shale inhibiting performance.…”

Section: Introductionmentioning

confidence: 99%

“…Several ILs with different anions such as bromide (Br − ), tetrafluoroborate (BF 4 − ), hexafluorophosphate (PF 6 − ), and bis(trifluoromethylsulfonyl) (TFSI − ) were systematically studied. 41 According to the results obtained, IL with a bromide anion exhibited remarkable shale inhibiting performance. In our other previous work, the influence of the alkyl chain length of the cationic part of vinylimidazolium-based ILs on the stabilization process of clays was studied.…”

Section: Introductionmentioning

confidence: 99%

Effect of Alkylation Chain Length on Inhibiting Performance of Soluble Ionic Liquids in Water-Based Drilling Fluids

et al. 2023

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This work investigated the effect of the alkyl chain length of soluble methylimidazolium bromide ionic liquids (ILs) on their inhibition performance. The IL with a shorter alkyl chain length showed superior inhibition performance by suppressing clay swelling, mitigating clay dispersion, at room temperature. Particularly, the IL with an alkyl chain length of two (EmBr) reduced the sodium bentonite (Na-BT) swelling degree to 89% and achieved a cutting recovery of 81.9% after being rolled at room temperature, performing the best among all ILs. To systematically analyze the inhibition mechanism of ILs, X-ray diffraction (XRD), ζ potential, and particle size distribution have been carried out. The results revealed that the methylimidazolium with shorter alkyl chain length had better ability to enter the interlayer void by ion exchange and decrease interlayer distance, suppress the electrical double layer of the Na-BT particles and decrease the ζ potential, and promote the aggregation of Na-BT in water. It is also observed that high hot rolling temperature reduced the shale inhibiting performance of all ILs, and ILs with longer alkyl chain length had better ability to prevent cutting disintegration at high temperature. It is attributed to the variation of the hydrophilic characteristic of Na-BT at high temperature where EmBr no longer adsorbed the most on the surface and entered the interlayer voids of Na-BT. This study can be used as a reference to systematically explore the effect of the structure of shale inhibitors on their inhibiting performance and develop effective shale inhibitors.

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“…38 Another study by Yang et al demonstrated the better inhibition effect of ILs with Br − or BF 4 − anions on clay particle aggregation and swelling. 39 He et al proposed that gemini imidazolium-based ionic liquids with moderate alkyl chain length could form the most favorable arrangement to inhibit clay swelling. 40 Our previous study explored the inhibition performances of imidazolium-based bola-form ionic liquids (IBFILs) and proposed that IBFILs with optimal spacer length (M6M) could serve as a connection bridge to bind adjacent crystalline layers.…”

Section: Introductionmentioning

confidence: 99%

“…Ionic liquids (ILs) are organic salt reagents composed entirely of anions and cations, with a melting point generally not exceeding 100 °C. , Due to their great chemical stability, thermal stability, nonvolatility, and designability, ILs have attracted great research interest in chemistry and industry in the last few decades, especially in the oil industry. − It has been widely reported that ILs can significantly inhibit the clay hydration swelling and ILs with special structures exhibit greater inhibition ability at low concentrations. − Yang et al reported that absolute solubility and hydrophilicity were the main reasons for the excellent inhibition ability of the vinylimidazolium-based ionic liquids with the shortest alkyl chain length . Another study by Yang et al demonstrated the better inhibition effect of ILs with Br – or BF 4 – anions on clay particle aggregation and swelling . He et al proposed that gemini imidazolium-based ionic liquids with moderate alkyl chain length could form the most favorable arrangement to inhibit clay swelling .…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Effects of Functional Groups on the Inhibition Performances of Imidazolium-Based Bola-Form Ionic Liquids as Novel High-Performance Shale Inhibitors

et al. 2023

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Ionic liquids (ILs) are considered effective additives to inhibit shale hydration swelling in recent years. The imidazolium-based bola-form ionic liquids (IBFILs) with two positively charged groups and optimal alkyl chain lengths can greatly enhance their electrostatic interaction with clay to improve their inhibition ability. The present study further extends our previous research on IBFILs to investigate the effects of different modified functional groups on the inhibition properties of three novel IBFILs including [C 6 (BIM) 2 ]Br 2 , [C 6 (NBIM) 2 ]Br 2 , and [C 6 (ABIM) 2 ]Br 2 . Then, their inhibition performances are evaluated via immersion tests, linear swelling tests, and hot-rolling recovery tests. The inhibition properties of three novel IBFILs are evidently improved in different degrees, especially for the [C 6 (ABIM) 2 ]Br 2 with amine groups. Then, the inhibition mechanisms are analyzed via contact angle measurements, Fourier transform infrared spectrometer (FTIR), X-ray diffraction (XRD), particle size distribution measurement, ζ-potential, and molecular electrostatic potential (MEP) distribution. The results reveal that the hydrogen bonding and protonation of amine groups should be responsible for the outstanding inhibition property of [C 6 (ABIM) 2 ]Br 2 , whereas the nitro groups indirectly hinder the coverage of the benzene rings at the clay surface to partially affect the inhibition capacity of [C 6 (NBIM) 2 ]Br 2 . Finally, the proposed mechanisms are further confirmed by molecular dynamics simulations. Our work may provide novel insight into the development and design of efficient IL inhibitors with modified functional groups.

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Counterion-specific shale hydration inhibiting performance of vinylimdazolium ionic liquids

Cited by 10 publications

References 32 publications

Evaluation of Aminated Nano-Silica as a Novel Shale Stabilizer to Improve Wellbore Stability

Evaluation of Aminated Nano-Silica as a Novel Shale Stabilizer to Improve Wellbore Stability

Effect of Alkylation Chain Length on Inhibiting Performance of Soluble Ionic Liquids in Water-Based Drilling Fluids

Investigation of the Effects of Functional Groups on the Inhibition Performances of Imidazolium-Based Bola-Form Ionic Liquids as Novel High-Performance Shale Inhibitors

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