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Patent Searching and Data


Title:
PAD ALIGNMENT WITH A MULTI-FREQUENCY-BAND AND MULTI-WINDOW SEMBLANCE PROCESSING
Document Type and Number:
WIPO Patent Application WO/2021/006874
Kind Code:
A3
Abstract:
A method and system for pad alignment may comprise disposing a downhole tool into a borehole, taking a measurement with the electrode with at least one operating frequency, correcting the measurement to account for local formation dip, constructing a window with a predetermined size H, identifying a number of adaptive filters to be utilized, extracting one or more frequency components from the measurement with the adaptive filters, identifying a semblance value of a reference dataset and a target dataset, assembling the semblance values for the reference dataset and the target dataset, identifying the semblance values of the reference dataset and target datasets over the range of relative pad shifts, identifying a pad shift, and forming one or more images of the pad shirt or the semblance of the reference dataset and target data set. The system may comprise a mandrel, one or more pads, and electrodes.

Inventors:
EWE WEI-BIN (SG)
WANG RUIJIA (SG)
Application Number:
PCT/US2019/040863
Publication Date:
March 25, 2021
Filing Date:
July 08, 2019
Export Citation:
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Assignee:
HALLIBURTON ENERGY SERVICES INC (US)
International Classes:
E21B47/01; E21B17/10; E21B23/12; E21B41/00
Domestic Patent References:
WO2018231234A12018-12-20
WO2018084847A12018-05-11
Foreign References:
US4468623A1984-08-28
US9523784B22016-12-20
US5198770A1993-03-30
Attorney, Agent or Firm:
COREY S. TUMEY (US)
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