发明名称 |
Retarded cement compositions and methods for well completions |
摘要 |
Cement retarders are based on blends of lignosulfonate compounds, borate compounds and gluconate compounds. The compounds are present in certain ratios that allow the retarders to operate at temperatures and pressures up to and exceeding about 176°C and 152 MPa. The retarders may also be provided in liquid form, improving their suitability for use at offshore wellsite locations. |
申请公布号 |
AU2011325441(B2) |
申请公布日期 |
2015.01.15 |
申请号 |
AU20110325441 |
申请日期 |
2011.10.28 |
申请人 |
SCHLUMBERGER TECHNOLOGY B.V. |
发明人 |
MICHAUX, MICHEL;GABILLY, LAURENT |
分类号 |
C09K8/467;C04B24/06;C04B24/18;C09B7/02 |
主分类号 |
C09K8/467 |
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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