发明名称 |
GROUTING SOLUTION FOR CEMENTING GAS/OIL DRILL HOLES AND METHOD FOR PREPARATION THE SAME |
摘要 |
<p>Hydraulic high density cement slurry, especially for cementation of oil/gas-wells. The slurry contains 30-45 weight % microsilica based on the cement weight and water to a density of 1.9-3.5 g/cm3. If desired there can be added dispersant, retarder and weighting agent. Microsilica acts as a fluid-loss preventing agent. The addition of microsilica prevents strength retrogression at temperatures above 120 DEG C. and acts as a mechanical stabilizer for the cement slurries. A method for production of the cement slurry is also described.</p> |
申请公布号 |
RU2057250(C1) |
申请公布日期 |
1996.03.27 |
申请号 |
SU19884356939 |
申请日期 |
1988.11.04 |
申请人 |
NORSK KHYUDRO A.S. |
发明人 |
JON PETTER SARGEANT;ASBERN VONEIM;EJSTEIN KALVENES |
分类号 |
C04B18/14;C09K8/46;C09K8/504;(IPC1-7):E21B33/138 |
主分类号 |
C04B18/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|