Abstract

Bakhtizin Ramil Nazifovich¹, Fattakhov Irik Galikhanovich²,  Kadyrov Ramzis Rahimovich¹, Dilara Ilmirovna Akhmetshina¹, Albina Rinatovna Safiullina¹

DOI : http://dx.doi.org/10.13005/ojc/310221

This article considers a polymer composition based on acetone-formaldehyde (AFR) resin, which is used to reduce water influx into the well bore during the repair insulation work. Pumping into the well bore a composition, based on AFR resin, results in self-heating that causes destruction of its own structure and, therefore, the damage of the polymer blend structure. The purpose of the present article is to find the causes of AFR resin self-heating when injected into the well bore as part of the composite mixture that leads to the destruction of its structure. Author considers exothermic reaction between AFR resin and aqueous solution of sodium hydroxide during the curing of the polymer composition. The features of the given polymer structure are studied as well. The need for further studies of the resin structure is substantiated. Based on the study conducted, five possible reasons of the AFR resin self-heating, leading to destruction of resin structure, are revealed. Recommended practices that may decrease self-heating of the AFR resin are offered.

resin; self-heating; mixture; polymer; curing; exothermal reaction; hydrogen bonds; tie points; molecular weight; microheterogeneity; colloidal solutions; crystallization; sodium hydroxide

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