发明名称 |
SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE |
摘要 |
A water-base drilling fluid for use in drilling wells through a formation containing a shale which swells in the presence of water. The drilling fluid preferably includes: an aqueous based continuous phase, a weight material, and a shale hydration inhibition agent having the formula: H2N- CH(CH3)CH2 { -OCH2CH(CH3)- }x -NH2 in which x is a value less than 15. The shale hydration inhibition agent should be present in sufficient concentration to reduce the swelling of the shale. Preferably x has an average number between about 1 and about 5 and more preferably x has an average number of about 2.6. Also inclusive of the present invention is a method of reducing the swelling of shale clay encountered during the drilling of a subterranean well, the method comprising circulating in the well a water-base drilling fluid formulated in accordance with the present invention. |
申请公布号 |
WO0159028(A2) |
申请公布日期 |
2001.08.16 |
申请号 |
WO2001US02966 |
申请日期 |
2001.01.30 |
申请人 |
M-I L.L.C. |
发明人 |
PATEL, ARVIND, D.;STAMATAKIS, EMANUEL;DAVIS, ERIC |
分类号 |
C09K8/22 |
主分类号 |
C09K8/22 |
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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