发明名称 |
SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE |
摘要 |
<p>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 - R - {OR'}x - Y, in which R and R' are alkylene groups having 1 to to 6 carbon atoms and x is a value from about 1 to about 25. The Y group should be an amine or alkoxy group, preferably a primary amine or a methoxy group. The shale hydration inhibition agent should be present in sufficient concentration to reduce the swelling of the shale. 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 fluid formulated in accordance with the present invention.</p> |
申请公布号 |
WO0238697(A2) |
申请公布日期 |
2002.05.16 |
申请号 |
WO2001US47311 |
申请日期 |
2001.11.13 |
申请人 |
M-I L.L.C. |
发明人 |
PATEL, ARVIND, D.;STAMATAKIS, EMANUEL;DAVIS, ERIC |
分类号 |
C09K8/20;C09K8/22;C09K8/24;(IPC1-7):C09K7/02 |
主分类号 |
C09K8/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|