发明名称 |
TWO STAGE DOWNHOLE DRILLING FLUID FILTER |
摘要 |
A two stage filter for drilling fluid using downhole tools filters solid materials from the drilling fluid and has a first, outer filter section and a second, inner filter section. A portion of the drilling fluid flowing through the first section is received by the second section, and passed on to the fluid using device of the tool. A flow area of the first filter section is greater than a flow area of the second filter section.
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申请公布号 |
US2004050591(A1) |
申请公布日期 |
2004.03.18 |
申请号 |
US20020065100 |
申请日期 |
2002.09.17 |
申请人 |
DOWNTON GEOFF;MENGER CHRISTIAN;PHAN HENRY |
发明人 |
DOWNTON GEOFF;MENGER CHRISTIAN;PHAN HENRY |
分类号 |
E21B7/04;E21B21/00;(IPC1-7):E21B27/00;E21B43/34 |
主分类号 |
E21B7/04 |
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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