SU1023070A1 - Plugging composition - Google Patents

Abstract

SLOTTED SOLUTION, including sodium silicate and water, characterized in that, in order to increase penetration ability, it additionally contains boric acid at a ratio of components, parts by weight: Sodium silicate 42-324 Boric acid13 25 Water 754-849 ( L

Description

to

The invention relates to construction and can be used, for example, when creating impervious curtains in the direction of hydraulic structures. Known cement slurry, including a solution of sodium silicate and oxalic acid JL. The disadvantage of this solution is the difficulty of controlling the time of gelation, which requires high dosage of the components. A cement slurry solution is also known, which includes a solution of sodium silicate, additionally containing sodium aluminate 2. The disadvantage of this solution is its low permeability due to a high viscosity of 3.5 to 4 cP. The purpose of the invention is to increase the penetrating ability of a thumping plant. The goal is achieved by those. that the cement slurry, including sodium silicate and water, additionally contains boric acid in the following ratio of components, parts by weight: 42-324 Sodium silicate 13-25 acid 754-949 Water Example 1 preparation of cement slurry: / gelation time 14 min , bone of a solution of 2.6 cP, temperature Preparing a solution of sodium silicate with a density of 1.19 g / cm. Separately, a 4% .. solution of boric acid in sodium silicate with a density of 1.01 g / cm. Concentration in 4% is taken as maximum solubility. At a lower concentration, smooth regulation of the gelation time is not obtained, since too much voi must be injected. If you use a solution of boric acid in sodium silicate, not 1.01, but 1, O2 g / cm, then the extractor itself will give a gel after a short time. To obtain 1 liter of cement slurry, 255 parts by weight are shifted. nitrate sodium (based on a density of 1.38 g / cm), 25.0 parts by weight boric acid, 796 parts by weight of water. Example 2, Conditions for preparing a cement slurry: gelation time 24 O min., Solution viscosity 2.6 cP, temperature 2 O ° C. A solution of sodium silicate with a density of 1.19 g / cm is prepared. Separately, a 4% solution of boric acid in sodium silicate with a density of 1, O1 g / cm is prepared. To obtain 1 liter of cement slurry, 324 parts by weight are mixed. sodium silicate, 21 weight.h. bo {zhid acid and 754 wt.h. water, EXAMPLE 3. Conditions for preparing the cement slurry: gelation time 8 minutes, solution viscosity 1.3 cP, temperature, Prepare a solution of sodium silicate with a density of 1.03 g / cm% Separately prepare 4% - boron acid solution in sodium silicate with a density of 1 , 01 g / cm. To obtain 1 liter of cement slurry, 42 centimeters are mixed. sodium silicate, 20 weight.h. boric acid and 949 weight.h. water, Ex. 4, Conditions for the preparation of the cement slurry: gelation time 24 O min., solution viscosity 1.3 cP, temperature 20 ° C. , To obtain 1 liter of cementing > pa, they mix 56 parts by weight, silicate of nat. ri, 13 weight.h. more than hydrochloric acid and 926 weight parts. water. The results of the study of the compositions of this cement slurry are given in the table.

25

796

255

21 754 324 854

14 196

14

7

2.6

ABOUT

240

220 2.6

21 2.1

9

From the results of the survey, it can be seen that the viscosity of this tamponazhnotch) rastor is equal to 1.3-2.6 cP, which is significantly lower than the viscosity of the plugging table.

solution, taken as a prototype (3-4cP), i.e., the penetrating power of this tampon solution is increased.

Claims (1)

TUMPING SOLUTION, including sodium silicate and water, characterized in that, in order to increase penetration, it additionally contains boric acid in the following ratio of components, parts by weight: Sodium silicate 42-324 Boric acid 13-25 Water 754-949