Aziza Bakytzhankyzy Issa

The rheological and filtration-technological characteristics of a 15% Darbaza clay-based suspension along with different dosages of newly synthesized SANVSK-series stabilizers were investigated in this study. Different techniques, such as rheological measurements, filtration tests, sedimentation stability analysis, Scanning Electron Microscopy (SEM), and Differential Thermal Analysis (DTA) were deployed. The results demonstrated that the use of SANVSK-2 as a stabilizer for Darbaza clay-based suspensions was optimal at a concentration of 0.5%. The polymer exhibited excellent thermal resistance (up to 180-200 °C) and salt resistance (up to 20% NaCl and 2% CaCl2) maintaining its functional performance during harsh situations. The mechanistic analysis revealed that SANVSK-2 was able to protect the clay matrix against the adsorption of more water, and thus increase its stability by creating solvation layers. The strong presence of amide, imide, carboxylate, and sulfo functional contributed to the polymer’s high resistance to electrolyte-induced destabilization and the reduction of the friction coefficient during drilling operations. Thus, it has been confirmed that SANVSK-2 is an excellent candidate for the application of a polymer additive that can withstand high temperature and salt for the low-clay and complicated drilling fluid systems.

The creation of new polymer reagents from their synthesis in the laboratory to their industrial production as an ointment is relatively long and expensive process. Therefore, the most promising and justified way is to expand the range of polymer reagents by modifying the already known base samples. We studied MPAA(HP)- hydrolyzed polacrylamide modified with hydrogen peroxide,, MPAA (MEA) - hydrolyzed polycrylamide modified with monoethanolamine, MPAA (TEA) - hydrolyzed polycrylamide modified with three ethanolamine polymers. A more detailed and in-depth study of them will expand the scope of application of low-toxic, affordable reagents that are of equal efficacy to the already existing ones and their application as an ointment. Polymer MPAA-HP polymacrylamide hydrolyzed NaOH with the addition of the H2O2 modifier in the ratio PAA: NaOH: H2O2 = 1: 0.4: 0.2 the hydrolysis reaction is carried out for 1.5-2 hours at temperature of 90-950C. MPAA-MEA polymer polymaracrylamide is hydrolysed with alkali with the addition of monoethanolamine modifier in the ratio of PAA: NaOH: MEA = 1: 0.4: 0.1 the hydrolysis reactions is carried out for 1.5-2 hours at temperature of 90-95°C.

Oriental Journal of Chemistry is a peer reviewed quarterly research journal of pure and applied chemistry. It publishes standard research papers in almost all thrust areas of current chemistry of academic and commercial importance. It provides a platform for rapid publication of quality research papers, reviews and chemistry letters. Oriental Journal of Chemistry is abstracted and indexed in almost all reputed National and International agencies.