Title:
DTEM WITH SHORT SPACING FOR DEEP, AHEAD OF THE DRILL BIT MEASUREMENTS
Document Type and Number:
WIPO Patent Application WO/2012/030768
Kind Code:
A3
Abstract:
A transmitter on a bottomhole assembly (BHA) is used for generating a transient electromagnetic signal in an earth formation. A processor estimates the distance to a resistivity interface using a signal produced by a receiver on the BHA. The transmitter-receiver distance may be less than 1m. The estimation of the distance is done in real time using a thin conductive sheet approximation.
Inventors:
ITSKOVICH GREGORY B (US)
REIDERMAN ARCADY (US)
RABINOVICH MICHAEL B (US)
MARTAKOV SERGEY (US)
IOMDINA EMMA (US)
REIDERMAN ARCADY (US)
RABINOVICH MICHAEL B (US)
MARTAKOV SERGEY (US)
IOMDINA EMMA (US)
Application Number:
PCT/US2011/049650
Publication Date:
July 19, 2012
Filing Date:
August 30, 2011
Export Citation:
Assignee:
BAKER HUGHES INC (US)
ITSKOVICH GREGORY B (US)
REIDERMAN ARCADY (US)
RABINOVICH MICHAEL B (US)
MARTAKOV SERGEY (US)
IOMDINA EMMA (US)
ITSKOVICH GREGORY B (US)
REIDERMAN ARCADY (US)
RABINOVICH MICHAEL B (US)
MARTAKOV SERGEY (US)
IOMDINA EMMA (US)
International Classes:
G01V3/26; E21B47/00; G06F19/00
Foreign References:
| US20050140374A1 | 2005-06-30 | |||
| US20070070809A1 | 2007-03-29 | |||
| US20100109672A1 | 2010-05-06 | |||
| US20070216416A1 | 2007-09-20 |
Attorney, Agent or Firm:
BYNUM, Todd, A. (P.O. Box 4740Houston, TX, US)
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