Invention Grant
- Patent Title: Logging tool with electric dipole source and magnetic sensor for forward and lateral imaging
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Application No.: US15483819Application Date: 2017-04-10
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Publication No.: US10557961B2Publication Date: 2020-02-11
- Inventor: Teruhiko Hagiwara
- Applicant: Aramco Services Company
- Applicant Address: SA
- Assignee: Saudi Arabian Oil Company
- Current Assignee: Saudi Arabian Oil Company
- Current Assignee Address: SA
- Agency: Bracewell LLP
- Agent Constance G. Rhebergen
- Main IPC: G01V3/28
- IPC: G01V3/28

Abstract:
A logging method and system for imaging forward and lateral sections of a subterranean formation. An electric dipole source generates electromagnetic field in the formation that is sensed with magnetic flux sensor that is spaced a distance away from the electric dipole source. The resulting electric dipoles can be axial or transverse, and magnetic flux sensors can sense magnetic fields oriented axially or orthogonally. The axial and transverse electric dipoles can be collocated, and magnetic flux sensors that sense axial or orthogonal magnetic fields can be collocated. Analyzing changes in the magnitude of signals sensed by magnetic flux sensors can indicate the presence and distance of bed boundaries that are ahead and lateral to the electric dipole source.
Public/Granted literature
- US20180292560A1 Logging Tool With Electric Dipole Source and Magnetic Sensor For Forward and Lateral Imaging Public/Granted day:2018-10-11
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