Feature compensated borehole image coding

Image block transmission includes reading an image block from a downhole sensor. Based on the image block, a set of formation features attributes for the image block are detected. The set of formation features attributes describe a structural property of a subsurface formation. Based on the set of f...

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Bibliographic Details
Main Author Gelman, Andriy
Format Patent
LanguageEnglish
Published 11.08.2020
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:Image block transmission includes reading an image block from a downhole sensor. Based on the image block, a set of formation features attributes for the image block are detected. The set of formation features attributes describe a structural property of a subsurface formation. Based on the set of formation feature attributes, a wavelet transform function is modified to obtain a modified wavelet transform function. The modified wavelet transform function is applied to the image block to obtain a set of wavelet transform coefficients for the image block. The image block transmission further includes generating an encoded bit stream comprising the set of formation features attributes and the set of wavelet transform coefficients for the image block, and transmitting the encoded bit stream.
Bibliography:Application Number: US201615379666