SU1010253A1 - Plugging material for cementing high-temperature wells - Google Patents

Abstract

BURNING MATERIAL FOR CEMENTING BtJCOKOTEFfflEPATYPHXX WELLS containing sticking - tatonazhny slag base cement and fibrous filler, due to the fact that, in order to reduce water loss and increase the impact resistance of the cement stone, a supplement will have a complement that has a complement in the template, a complement will have a complement of a complement, a template, a template, a template, a template, a template, a template, a template, a template, a template, a cement stone, a cement stone, and a filler material. mineral fibers anthophyllite- or chrysotile asbestos with the following ratio of components, May.%: Cement-based cement 92.00-99.45 on a slag basis Mineral fibers of anthophyllite- or (O chrysotile asbestos 0.50-7.00 P softener; 0.05-1, 00

Description

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The invention relates to mining, namely to oil and gas production, and can be used in the manufacture of cementing materials used for drilling boreholes in a temperature range of 80-250 seconds. Known backfill material containing Portland cement, asbestos chrysotile; mineral fiber and dextrin (), which is used as a plasticizer. The cement stone of this material has enhanced TIJ adhesion properties. The disadvantages of this material are the low stability of the mortar, the low strength properties and the corrosion resistance of the stone at temperatures above. The closest technical solution to the invention is the grouting material for cementing (neither high-temperature wells) containing cement - slag-based cement and fiber additive (filler) - slag or basalt fiber. The backfill stone of this material has increased strength and durability 2j The disadvantages of the known material are the increased water loss of the solution and the reduced impact resistance of the cement stone. The aim of the invention is to reduce the rt B / -4t ation of water loss there. mortar and increase the impact resistance of cement kiln. The goal is achieved by introducing a plasticizer into the grouting material containing cementing grouting cement nd slag base and fibrous filler, and mineral fiber anthophilite lithium or chrysotile as fibrous material asbestos with the following ratio of components, wt.% Cement based slag cement 92.00-99.45 Mineral fibers anthophyllite- or chrysotile asbestos0, 50-7.00 Plasticizer 0.05-1.0 Mineral fiber chrysotile asbestos (HA) is a mixture of thin elastic fibers of varying lengths and their aggregates formed in the process of mineral digestion of chrysotile asbestos; Fibers are regulated by GOST 12871-67. Anthophyllite-asbestos (AA) mineral fibers consist of a mixture of anthophyllite asbestos finely divided asbestos fibers obtained in the process of splitting anthophyllite-asbestos minerals. Fibers of AH-1-42 grade and recycled wastes from asbestos production were used, regulated by TU 21-2213-78 and TU 023-04-1-75. The grouting mixture is prepared by introducing mineral fiber into the cement cement (in the process of its manufacture or already into the finished product), followed by the joint mixing of the dry mixture. It is possible to introduce short-fiber asbestos directly into the mixing fluid or in the cement slurry. PRI EMER. The grouting material consists of 96.9% of cement backing cement on slag base SHPSS-200, 3% HA and 0.2% plasticizer BD "" akJtfl-ri tJaVf and / ch1Sh "/ LLLTTOAL n n 40% liquid was added to the cement material. The flowability of the tampong solution along the AzNII cone of 19 cm, after 2 hours, was made of water drainage and was 0.8%. The flexural / compressive strength of the cement stone from this solution after daily hardening at 200 ° C is 6.3 / 24.6 MPa, respectively, the impact resistance is 2060 J / m2. For comparison, the drainage solution of the cement slurry by a known method is 4.0%, impact resistance is 1860 J / m (see experiment 5 and 6, Table 1). In tab. 1 shows the physico-mechanical properties of special cements with the addition of fibers.

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The proposed composition of the grouting material allows to obtain a grouting stone with improved durability of their characteristics, increased resistance to impact and crush resistance, corrosion resistance, used in the temperature range of 100-250 ° C.

The presence of asbestos (anthophyllitic or chrysotile in the considered special specimens leads to a significant reduction in the formation of foam during the preparation and transportation there 99, 7

0.4

0.3

23 2.09. there is 7.5

96.7

0,30,319 2,11net 94,7.

0,30,318 2,12net

99.0

1,0 1,025 2,02 there are

94

1,0 1,025 2,08note

The economic effect of the use of - Use of the proposed material of the cement material (for example, also significantly improve the quality

measures, instead of the emitted ShPTsS-120) fastening of the wells, will increase the interval between them only due to its lower ston-mont period of their operation and

the bridge will be 23,310 rubles. per year. reduce time for overhaul.

ponazhnyh solutions treated with foaming reagents, which allows to increase their maximum content. This effect is especially important when fastening zones with abnormally high airborne pressure, since a decrease in foaming increases the density of diluted solutions (Table 2).

In tab. 2 shows the technological properties of the cement slurry based on USCH-1-200 with the addition of asbestos (at V / T 0.35).

Table 2

0,292

Oh, 265 0.001

do not determine

Claims (1)

TUMPING MATERIAL FOR CEMENTING HIGH-TEMPERATURE WELLS, containing binder - cement slag-based cement and fibrous filler, smoldering in that, in order to reduce water loss and increase the impact resistance of cementitious stone, it additionally contains plasticizer, and as fibrous mineral fibers of anthophyllite or chrysotile asbestos in the following ratio in May.%: Slag-based grouting cement Mineral fibers of anthophyllite or chrysotile asbestos Plasticizer.