Invention Grant
- Patent Title: Methods of electromagnetic migration imaging of geologic formation
- Patent Title (中): 地质构造电磁迁移成像方法
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Application No.: US13183680Application Date: 2011-07-15
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Publication No.: US08624969B2Publication Date: 2014-01-07
- Inventor: Michael S. Zhdanov
- Applicant: Michael S. Zhdanov
- Applicant Address: US UT Salt Lake City
- Assignee: TechnoImaging, LLC.
- Current Assignee: TechnoImaging, LLC.
- Current Assignee Address: US UT Salt Lake City
- Agency: Workman Nydegger
- Main IPC: H04N7/18
- IPC: H04N7/18

Abstract:
Methods and systems for imaging-while-drilling and look-ahead imaging of a geological formation using a borehole devices measuring multi-component vector and/or tensor logging data. An electromagnetic field transmitter generates an electromagnetic field. Electromagnetic receivers measure the response from the geological formation around the borehole and ahead of the device at various receiving positions. A central processing unit may compute a migration field by simulating the replacement of the receivers with conceptual transmitters, calculate an integrated sensitivity of the recorded electromagnetic field data, compute a reference field, and calculate a cross power spectra of the reference and the migration fields or cross correlation functions between the reference and the migration fields. A spatial weighting of the cross power spectra or cross correlation functions produces a numerical reconstruction of directional images and look-ahead images of the conductivity distribution around the borehole and/or ahead of the device located within the borehole.
Public/Granted literature
- US20120026314A1 METHODS OF ELECTROMAGNETIC MIGRATION IMAGING OF GEOLOGIC FORMATION Public/Granted day:2012-02-02
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