SU1573140A1 - Composition for preparing plugging binder - Google Patents

Abstract

BACKGROUND OF THE INVENTION The invention relates to lightweight cement materials used in the cementing of oil and gas wells that have been exposed to low pressure formations. The purpose of the invention is to reduce the density and improve the technological parameters of the cement material while reducing the energy intensity of the cooking process. The composition includes cement clinker (CK), gypsum and mineral additive - zeolite rock (CP) in the following ratio of ingredients, wt.%: CK 50.00-66.61, gypsum 10.52-27.78, CPU 16.66- 36.85. The cement slurry is prepared by co-grinding CK, gypsum and CPU in a laboratory ball mill to a standard specific surface equal to 300 m ² / kg. 2 tab.

Description

The invention relates to lightweight cement materials that are used in the cementing of oil and gas wells that have been exposed to low pressure formations.

The aim of the invention is to reduce the density and improve the technological parameters of the cement material while reducing the energy intensity of the cooking process.

The composition for the preparation of cementing / slurry contains cement clinker, gypsum and zeolite rock, as a mineral additive, in the following ratio of ingredients, wt%: Cement clinker 50.00 - 66.61 Gypsum 10.52 - 27.78

Zeolitic breed 16,66 - 36,85

I

In tab. Figure 1 shows data illustrating the dependence of the change in the properties of the cement material and the energy consumption for the preparation of the cement in the binder (at the grinding stage) on the quantitative content of the components in the composition.

In tab. 2 shows the chemical and mineralogical composition of the zeolite rock.

ate

-si

with

Example. The grouting is prepared by co-grinding; cement clinker, gypsum and cement rock in a laboratory spherical ball of the construction of a HYPROCEMENT and a standard specific surface area of 300, measured by air permeability on the PSC-4 device.

The original components are used in the following ratio of ingredients, m4s.%:

Cement clinker 52.63 Gypsum 10.52

Zeolitic rock 36.85. Technological parameters of a tampon material obtained from this material in a V / C 0.65 are given in Table. one.

Studies show that the tamper material with technological parameters suitable for use when attaching wells, is obtained from the idlers, for preparing

0

e

which components are taken in the indicated range of quantitative content. Compositions containing ingredients outside the specified interval do not allow for the production of cement material with satisfactory parameters (Table 1).

Claims (1)

Invention Formula The composition for the preparation of a cementing mortar, including cement clinker, gypsum and a mineral additive, characterized in that, in order to reduce the density and improve the technological parameters of the cement material, while reducing the energy intensity of the baking process, it contains Zeolite rock in the following ratio of ingredients, wt.%: Cement clinker 50.00-66.61 Gypsum .10; 52-27.78 Zeolitic breed 16,66-36,85 Table) Table 2 SiOij A1203 | Fe403 I CaO I MgO S03 j Ti02 j KaO jn.n.n. 67 12.6 1.05 2.47 1.17 0.12 0.10 1.85 3.26 10.37 Compiled by L. Bestuzheva Editor G. Gerber Tehred M. Khodanych Order 1627 Circulation 477 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Table 2 Proofreader L. Patay Subscription