发明名称 |
A LOW-DENSITY AND LOW-POROSITY CEMENTING SLURRY FOR OIL WELLS OR THE LIKE |
摘要 |
The invention relates to a cement slurry for cementing an oil well or the like, the slurry having a density lying in the range 0.9 g/cm3 to 1.3 g/cm3, and being constituted by a solid fraction and a liquid fraction, having porosity (volume ratio of liquid fraction over solid fraction) lying in the range 38 % to 50 %. The solid fraction is constitued by a mixture of lightweight particles, microcement and optionally portland cement and gypsum . Such cements have remarkable mechanical properties due to their very low porosity in spite of having very low density.
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申请公布号 |
CA2380095(A1) |
申请公布日期 |
2001.02.08 |
申请号 |
CA20002380095 |
申请日期 |
2000.07.06 |
申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
DROCHON, BRUNO;GARNIER, ANDRE |
分类号 |
E21B33/14;C04B7/02;C04B14/04;C04B14/24;C04B16/08;C04B20/00;C04B22/14;C04B28/02;C04B28/08;C04B111/70;C09K8/46;C09K8/473;C09K8/58;E21B33/13;(IPC1-7):C04B28/02;C04B38/08 |
主分类号 |
E21B33/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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