发明名称 |
Variable downhole choke |
摘要 |
A variable downhole choke is disclosed wherein an outer housing includes a selected port pattern of ports and subports and a sleeve having similar ports and subports wherein subports depend from ports on each of the housing and sleeve. The ports/subports are oriented so that upon converging movement of housing and sleeve the sleeve subports align with housing subports before the sleeve ports align with housing ports.
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申请公布号 |
US6371208(B1) |
申请公布日期 |
2002.04.16 |
申请号 |
US20000598130 |
申请日期 |
2000.06.21 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
NORMAN DALE;O'BRIEN ROBERT S.;RUSSELL RONNIE D. |
分类号 |
E21B34/06;E21B34/14;E21B43/12;(IPC1-7):E21B34/06 |
主分类号 |
E21B34/06 |
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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