发明授权
- 专利标题： Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations
- 专利标题（中）： 在钻井操作期间监测和记录井下钻头的操作状态的方法和装置
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申请号： US09783265申请日： 2001-02-06
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公开(公告)号： US06540033B1公开(公告)日： 2003-04-01
- 发明人: Eric Charles Sullivan , Theodore Edward Zaleski, Jr. , Scott Ray Schmidt , Don Quy Nguyen , Glenn R. Zadrapa , Chih Lin
- 申请人： Eric Charles Sullivan , Theodore Edward Zaleski, Jr. , Scott Ray Schmidt , Don Quy Nguyen , Glenn R. Zadrapa , Chih Lin
- 主分类号： E21B718
- IPC分类号： E21B718
摘要：
An improved drill bit is provided with a sensor for monitoring an operating condition during drilling. A fastener system is provided for securing an erodible ball in a fixed position relative to a flow pathway until a predetermined operating condition is detected by the sensor, and for releasing the erodible ball into the flow pathway to obstruct the flow through at least one bit nozzle.
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