发明名称 |
NO-GO TAG SYSTEMS AND METHODS FOR PROGRESSIVE CAVITY PUMPS |
摘要 |
A stator for a progressive cavity pump comprises a stator housing having a central axis, a first end, and a second end opposite the first end. In addition, the stator comprises a stator liner disposed within the stator housing. The stator liner has a first end and a second end opposite the first end. The first end of the stator liner is axially spaced from the first end of the stator housing. Further, the stator comprises a tag insert positioned in the stator housing between the first end of the stator housing and the first end of the stator liner. The tag insert has a through passage defining a radially inner surface that includes a tag shoulder. |
申请公布号 |
CA2764311(A1) |
申请公布日期 |
2010.12.09 |
申请号 |
CA20102764311 |
申请日期 |
2010.06.01 |
申请人 |
NATIONAL OILWELL VARCO, L.P. |
发明人 |
AHMED, TARIQ;BLAQUIERE, DENIS J. |
分类号 |
E21B43/00;E21B43/12 |
主分类号 |
E21B43/00 |
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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