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method for the preparation of a cement suspension with low density for the cementing of oil and gasputten.
method for the preparation of a cement suspension with low density for the cementing of oil and gasputten.
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机译:低密度水泥悬浮液的制备方法,用于石油和天然气的固井。
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摘要
A cement slurry of low specific density for cementation of oil-and gas wells is produced by mixing oil-well cement with finely divided emission products comprising amorphous silica dust which has been obtained during the electrothermal preparation of ferrosilicon and/or silicon metal, water, and any desirable dispersion components, the emission products being added in an amount in the range of 1-50% of the total weight of dry material. The emission products can either be mixed with the cement while both components are in the dry state whereupon there is added a sufficient quantity of water in order to obtain a desired specific weight of the slurry or first mixed with water and any other desired dispersion components and this slurry is mixed with the oil-well cement.
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