SU833765A1 - Acid-resistant composition - Google Patents

Description

I

The invention relates to the production of construction materials, in particular, for the cementing of deep injection wells, in which absorbing horizons acidic effluents of chemical enterprises are pumped.

Known acid-resistant composition, including liquid glass, sodium silicofluoride and nickel-made slag jJ-j

The disadvantage of this composition is a short setting time.

Closest to the proposed is acid-resistant putty, {including, weight. h:

Liquid glass21-24

Silicon fluoride sodium 1 -12, / Diabase powder (flour), 64-69 However, this composition is used for cementing wells:., As it has a high initial consistency (more than 25 P), short setting times and high density (, 3 g / cm ), because of what is possible the absorption of the solution into the reservoir.

The purpose of the invention is to increase mobility, increase the setting time and reduce the density of the composition.

This goal is achieved by the fact that the acid-resistant composition, including liquid glass, sodium silicofluoride and diabase powder, additionally contains sulfite-alcohol bard (PRS) -pr and the ratio of components, weight. h: Liquid glass6O-90

Sodium silicofluoride9-13, 5 PRS O, 4-2 Diabase powder Else The consistency of the acid-resistant composition is reduced to 5-6 P.

This goal is achieved by increasing the content of liquid glass to 60-9 O weight. hours, as well as by lowering the density of the liquid glass itself by introducing water to 1.25-1.35 g. As a result, the mobility of the composition is significantly increased, which ensures its use for plugging wells. In order to increase the setting time of the acid-resistant composition, additional PRS is added in the amount of 0.42 parts by weight.

Components

Liquid glass

Sodium fluoride

Diabase PS Scheik

In a mechanized warehouse or non-shutter on liquid glass, adding

mediocre on the PRS drilling rig.

mix diabase powder and silica-Acid-resistant compositions obtained

sodium fluoride, taken in the department, has strength characteristics, and a weight ratio. The mixture obtained is given in Table 2.

Component content, weight. h

zimzi

..L ..: L

6075

Table 2 In addition, as a result of a change in the ratio of liquid glass to the weight of the dry mixture and a decrease in the density of the liquid glass itself, the density of the proposed composition decreases to 1.84 g / cm. In tab. 1 shows the compositions of the acid resistant composition. Table

Claims (2)

In tab. 3 shows the properties of cement on the basis of the proposed composition. The proposed acid-resistant structure has great density, strength, mobility and contributes to the reliable preservation of acidic effluents containing other harmful substances, thereby creating favorable conditions for environmental protection Formula of the invention Acid-resistant composition, including liquid glass, cream-fluoride and diabase iji powder, kicking with the fact that, in order to increase mobility, decrease the density and increase the setting time, it additionally contains sulfite alcohol th vinasse thyroid component ratio, wt. h .: Liquid glass-O-90 Silicon sodium 9-13,5 5 8 Sulfite-alcohol bard 0.4-2 Diabase powder Else ,, g Sources of information, PR "" are taken into account during the examination 1. USSR USSR Certificate of Art jg, 637367, cl. C O4, 19/04, 1977. 2. USSR author's certificate MJ 3157 OZKL. C 04 B 19 / O4, 1968.