Исследование возможности получения лигносульфонатного реагента на основе комплексных соединений для регулирования параметров бурового раствора

Abstract

Investigation of the possibility of obtaining a reagent for regulating the parameters of drilling mud based on complex compounds by introducing complex-forming Fe (II) cations into the composition of sodium lignosulfonate, followed by additional modification with phosphonic compounds and obtaining a polyelectrolyte complex based on anionic polyelectrolyte-sodium lignosulfonate and modified cationic starch. The presence of functional groups of the studied sodium lignosulfonate capable of complexation was established by IR spectrometry. The determination of the optimal ratios of the initial components for the production of complex compounds based on lignosulfonate, iron sulfate and phosphonic compounds was carried out.Studies of the surface activityof experimental samples were carried out by the stalagmometric method (the method of counting drops). In order to study changes in the structure of a macromolecule of sodium lignosulfonate and a polyelectrolyte complex based on sodium lignosulfonateand cationic starch, the particle size distribution method was investigated. Obtaining a stable polyelectrolyte complex, by selecting the molar ratios of anionic and cationic components, consisted in measuring the dependence of the impedance of an electrochemical cell on the frequency of alternating current. The possibility of using the obtained lignosulfonate reagent based on complex compounds as a reagent for regulating the parameters of the drilling fluid at temperatures from 20 to 160-180°C.