SU1182155A1 - Plugging composition - Google Patents

Abstract

TA fFlOHA SOLUTION containing stinging, hardening agent, clay and water, is different because wt.%: Magnesium chloride 23-25 Silicon dioxide 45-50 Sodium oxide 13 15. Calcium chloride 2.0-2.5 WaterEvalue and lime as an additive hardener in the following ratio of ingredients, wt.%: A mixture of the indicated composition 28-32 W Lime13-15 (L Clay 26-30 Water 27-29

Description

The invention relates to mining, in particular to substances used in drilling equipment and the salt industry for waterproofing formations or wells.

The purpose of the invention is to increase the adhesion of the solid solution to the formation rocks and decrease the water permeability of the cement slurry as (n.

The use of magnesium magnesium hydrosilicate as a technical powder in a technical one contributes to an increase in the adhesive adhesion of the cement slurry to the formation as a result of an increase in the mortar properties of the solution. In addition, when magnesium-sodium hydrosilicate is used as a mortar, lime as an additive and clay as a filler, practical non-shrinkage of the cement stone is reduced and reduced as a result of this hydropermeability of the stone.

The introduction of lime into the composition of the solution ensures the formation of calcium silicate compounds during the interaction

In a grudge with lime. Silicate in the interaction with magnesium hydrosilicate provides the necessary solution hardening speed, high strength properties and non-shrinkage of the cementing stone, which significantly reduces the water permeability of the stone.

In the interaction of lime with a mortar, it provides the required strength properties of the solution when a necessary amount of clay is introduced into the composition. Clay, in combination with lime and lime, provides elasticity and the required accuracy of the cement slurry, which is important for good filling of cracks, gouges and other defects in rock formations with the solution.

Were prepared 5 compositions of cement slurry (Table 1). Pre-prepared as a slurry in the following way, an aqueous solution of bishofit (spd. Weight not lower than 1.3) was heated to 60 ° C, and water glass was introduced into it while being crushed. by the jet in the place of its falling into the solution by transverse oscillatory movements.

Table 1

The resulting solid was separated from the liquid phase, dried at 100-110 ° C and subjected to grinding.

The cement slurry was prepared by interfering powders in a binder, a hardener — lime, a filler — clay, water was added in accordance with

given percentage.

A hydrosilicate of the following composition was used for the manufacture of the cement slurry (Table 2). Any of the compositions shown in Table 2 may be injected into the cement slurry.

table 2

Claims (1)

TUMPING SOLUTION containing a binder, hardener, clay and water, characterized in that, in order to increase the adhesion of the cement stone to the rocks, achieve its shrinkage and reduce the permeability, it contains a mixture of the composition, wt. %: Magnesium Chloride Silicon Dioxide Sodium Oxide. Calcium chloride Water next '23-25 45-50 13-15 2.0-2.5 The rest ^ and as an additive-hardener lime in the following ratio of ingredients, wt.%: A mixture of the specified composition 28-32 Lime Clay Water 13-15 26-30 27- 29 SU „„ 1182155