Title:
MULTI-FREQUENCY FOCUSING FOR MWD RESISTIVITY TOOLS
Document Type and Number:
WIPO Patent Application WO/2004/046507
Kind Code:
A2
Abstract:
An induction logging tool is used on a MWD bottom hole assembly. Due to the finite, nonzero, conductivity of the mandrel, conventional multi frequency focusing (MFF) does not work. A correction is made to the induction logging data to give measurements simulating a perfectly conducting mandrel. MFF can then be applied to the corrected data to give formation resistivities.
Inventors:
TABAROVSKY LEONTY
Application Number:
PCT/US2003/036416
Publication Date:
June 03, 2004
Filing Date:
November 13, 2003
Export Citation:
Assignee:
BAKER HUGHES INC (US)
International Classes:
G01V3/28; (IPC1-7): E21B47/12
Foreign References:
| US6044325A | 2000-03-28 | |||
| US5884227A | 1999-03-16 | |||
| EP0368762A2 | 1990-05-16 |
Attorney, Agent or Firm:
Welborn, Brian S. (2001 Rankin Road Houston, TX, US)
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