Известия Томского политехнического университета: Инжиниринг георесурсов (Oct 2017)
Obtaining drill reagents by modification of neutral-sulphite alkali phosphonic compounds
Abstract
Relevance of the work is determined by the task of developing low-toxic, biodegradable and inexpensive reagents for water based drilling muds chemical treatment. In this connection, the paper considers the methods for increasing the reactivity of neutral-sulphite liquors used as the basis of such reagents. The aim of the research is to study the feasibility of using phosphonic compounds in preparation of reagents based on neutral-sulphite liquors for treatment of drilling flushing fluids in order to improve their technological parameters Research methods: instrumental methods for determining drilling fluids parameters for taxiway 39-00147001-773-2004 ([ro] is the density, RV is the relative viscosity, [ita]pl is the plastic viscosity, [tau]0 is the yield point, the SSS is the static shear stress, IF is the index filtration, pH is the index of hydrogen ions content) supplemented with neutral sulfite liquors phosphonic compounds in acid nitrilomethylenephosphonic, sodium tripolyphosphate for both separate and combined entering into composition of drilling liquid Results. It was ascertained that inclusion of phosphonic compounds in composition of drilling reagents based on the neutral-sulfite liquor allows improving quality indicators of drilling fluids, contributing to sustainability of drilling system parameters to exposure of higher downhole temperature and mineral aggression providing high-thinning ability and reducing the drilling mud filtration rate. These properties of drilling reagents, modified by phosphonic compounds, allow converting low-reaction liquors used as the basis, to the part of the advanced resource-renewable domestic raw materials. Conclusion. Investigation of physicochemical properties and characteristics of liquors of neutral-sulfite digestion showed that, in spite of the reduced reactivity, they are a very promising component for reagents obtaining, especially in conditions of increased demand for renewable raw materials sources.
