发明名称 |
DRILLING FLUID AND METHOD FOR DRILLING IN COAL-CONTAINING FORMATIONS |
摘要 |
A drilling fluid and method for drilling in a coal containing formation. The method includes: providing a mixed metal-viscosified drilling fluid including at least 1% potassium salt; circulating the drilling fluid through the well; and drilling into a coal seam. |
申请公布号 |
CA2679922(C) |
申请公布日期 |
2016.01.26 |
申请号 |
CA20082679922 |
申请日期 |
2008.03.03 |
申请人 |
TECHSTAR ENERGY SERVICES INC. |
发明人 |
STOIAN, STEFAN ALEXANDRU;SMITH, CARL KEITH |
分类号 |
C09K8/16;E21B21/01 |
主分类号 |
C09K8/16 |
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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