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LOW TYPE-WEIGHT CEMENT SUSPENSION SUITABLE FOR CEMENTING OIL AND GAS WELLS, METHOD FOR PREPARING SUCH CEMENT SLUSHING AND METHOD FOR CEMENTING OIL AND GAS WELLS WITH SUCH CEMENT SUSPENS.
LOW TYPE-WEIGHT CEMENT SUSPENSION SUITABLE FOR CEMENTING OIL AND GAS WELLS, METHOD FOR PREPARING SUCH CEMENT SLUSHING AND METHOD FOR CEMENTING OIL AND GAS WELLS WITH SUCH CEMENT SUSPENS.
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机译:适用于固井的低重量水泥悬浮液,制备这种水泥泥浆的方法以及用这类水泥悬浮液固井的方法。
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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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