Invention Grant
- Patent Title: Downhole tool
- Patent Title (中): 井下工具
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Application No.: US11844339Application Date: 2007-08-23
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Publication No.: US07793712B2Publication Date: 2010-09-14
- Inventor: Tsutomu Yamate , Hiroshi Inoue , Jiro Takeda , Yukio Sudo , Emmanuel Desroques , Satoru Umemoto
- Applicant: Tsutomu Yamate , Hiroshi Inoue , Jiro Takeda , Yukio Sudo , Emmanuel Desroques , Satoru Umemoto
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agent Daryl Wright; Jody DeStefanis; Jeff Griffin
- Main IPC: E21B29/02
- IPC: E21B29/02 ; E21B47/00 ; E21B49/00 ; E21B47/12
Abstract:
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.
Public/Granted literature
- US20080047751A1 DOWNHOLE TOOL Public/Granted day:2008-02-28
Information query
