Study of dispersed-reinforced expanding plugging materials to improve the quality of well cementing

Abstract

The most common complications during the construction and operation of wells, such as gas and water showings and interstratal crossflows, in most cases result from seal failure of the annular space caused by cracking and destruction of the cement ring. The main way to improve the stability and tightness of well support is a rational cementing technology using high-quality plugging materials. Recently, due to the toughening of environmental requirements for a number of chemical reagents used for the treatment of plugging solutions, the most expedient in terms of increasing the fracture strength of a stone has become a method for developing plugging materials from several components with different physicochemical and physicomechanical properties. These are dispersed-reinforced materials, which are a mixture of backfill cement and mineral or artificial fibers, as well as organic fibrous additives from cellulose, jute, cotton, etc. The article discusses the results of studies of expanding reinforced plugging solutions in order to study their main technological and strength characteristics