Invention Grant
- Patent Title: Resistivity tool with selectable depths of investigation
- Patent Title (中): 电阻率工具,可选择深度调查
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Application No.: US11612881Application Date: 2006-12-19
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Publication No.: US07825664B2Publication Date: 2010-11-02
- Inventor: Dean Homan , Edward Nichols , Michael Wilt , Jean Seydoux
- Applicant: Dean Homan , Edward Nichols , Michael Wilt , Jean Seydoux
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agent Jonna Flores; Darla Fonseca; Charlotte Rutherford
- Main IPC: G01V3/18
- IPC: G01V3/18 ; G01V3/30

Abstract:
A wireline tool string used in a wellbore to determine formation properties is disclosed which comprises one or more transmitter tools disposed within the tool string, each transmitter tool having three linearly independent coils; a receiver tool disposed within the tool string, wherein the receiver tool has three linearly independent coils; and a tool string component disposed between the one or mole transmitter tools and the receiver tool; wherein the one or more transmitter tools are selectably spatially separated from the receiver tool along the tool string to provide a desired depth of investigation and measurements made using the one or more transmitter tools and receiver tool are used to determine formation properties.
Public/Granted literature
- US20070137854A1 Resistivity Tool with Selectable Depths of Investigation Public/Granted day:2007-06-21
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