发明申请
- 专利标题： DOWNHOLE TOOL
- 专利标题（中）： 卧式工具
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申请号： US11844339申请日： 2007-08-23
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公开(公告)号： US20080047751A1公开(公告)日： 2008-02-28
- 发明人: Tsutomu Yamate , Hiroshi Inoue , Jiro Takeda , Yukio Sudo , Emmanuel Desroques , Satoru Umemoto
- 申请人： Tsutomu Yamate , Hiroshi Inoue , Jiro Takeda , Yukio Sudo , Emmanuel Desroques , Satoru Umemoto
- 申请人地址： US TX Sugar Land
- 专利权人： Schlumberger Technology Corporation
- 当前专利权人： Schlumberger Technology Corporation
- 当前专利权人地址： US TX Sugar Land
- 主分类号： E21B49/00
- IPC分类号： E21B49/00
摘要：
A downhole tool, configured to be suspended in a borehole traversing an earth formation, includes a downhole data acquisition system placed in the tool body and electrically connected to an electric power generator at the formation surface. The downhole data acquisition system includes a sensor for detecting local conditions in the borehole, and a transducer for transducing the voltage of an input signal from high to low or low to high. The transducer having a gallium nitride or silicon carbide based discrete semiconductor device.
公开/授权文献
- US07793712B2 Downhole tool 公开/授权日：2010-09-14