Ato Kwamena Quainoo

Abstract This article comprehensively reviews the potential application and effects of different moieties of ionic liquids (ILs) on shale stabilization processes. The shale swelling inhibitory mechanisms and dispersion properties of 22 ILs were discussed. The effect of IL's concentration, temperature, chain length, cations, anions and polymerization functionally are discussed. Also, the toxicity and biodegradability of ILs are briefly provided. This study highlighted that more positive groups and alkyl substituents, and shorter alkyl chains are helpful for high performances. Understanding different IL's anion/cation effects are highly required. The study provides guidelines to design ILs for shale stabilization.

In this paper, the destabilization inhibition potentials and mechanisms of Alanine, Arginine, and Proline on montmorillonite clay were investigated. A swelling test was done using an M4600 HPHT Linear swell meter at 1000 psi, 25 °C, and 2 wt% inhibitor solutions. Shear rates and temperatures in the range of 0.01 s−1 to 1000 s−1 and 25 °C – 50 °C, respectively, were applied on a high-precision Discovery Hybrid Rheometer to investigate the effect of the amino acids on the suspension's rheology. Also, the inhibitors' neutralization and surface modification properties were determined via zeta potential, wettability alteration, and FTIR analyses using the nano zeta sizer, goniometer, and the spectrometer respectively. Furthermore, COSMO-RS was employed to study the hydrogen bonding interactions of amino acids and water. Upon completion, Proline displayed the best inhibition performance reducing the swelling of the montmorillonite by 22.5%, whiles KCl only showed a 17.8% reduction...

In this study, four ammonium hydroxide ionic liquids (AHILs) with varying alkyl chains were evaluated for their kinetic hydrate inhibition (KHI) impact on pure carbon dioxide (CO2) and methane (CH4) gas hydrate systems. The constant cooling technique was used to determine the induction time, the initial rate of hydrate formation, and the amount of gas uptake for CH4-AHILs and CO2-AHILs systems at 8.0 and 3.50 MPa, respectively, at 1 wt.% aqueous AHILs solutions. In addition, the effect of hydrate formation sub-cooling temperature on the performance of the AHILs was conducted at experimental temperatures 274.0 and 277.0 K. The tested AHILs kinetically inhibited both CH4 and CO2 hydrates at the studied sub-cooling temperatures by delaying the hydrate induction time and reducing the initial rate of hydrate formation and gas uptake. The hydrate inhibition performance of AHILs increases with increasing alkyl chain length, due to the better surface adsorption on the hydrate crystal surfac...