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GEOREF RECORD

Use of full-waveform sonic data to image near-borehole structural features

B. E. Hornby
Use of full-waveform sonic data to image near-borehole structural features
Petroleum Geoscience (May 1995) 1 (2): 109-114

Abstract

The full waveforms recorded by an array of receivers in a modern full-waveform sonic tool contain secondary arrivals that are reflected from near-borehole structural features. These arrivals are used to form an image of the near-borehole structural features in a manner similar to seismic migration. Possible uses of this technique include horizontal well logging; structural dip and contour determination; fault, salt dome, pinnacle reef, and fracture zone imaging; and EOR steam-flood monitoring. Examples are given for a deviated well penetrating a North Sea reservoir, and for a horizontal well penetrating a thin (10m thick) reservoir. For the horizontal well case, full-waveform sonic data are successfully used to image the reservoir top as the well penetrates into the reservoir and continues near-parallel to the reservoir boundary.


ISSN: 1354-0793
EISSN: 2041-496X
Serial Title: Petroleum Geoscience
Serial Volume: 1
Serial Issue: 2
Title: Use of full-waveform sonic data to image near-borehole structural features
Author(s): Hornby, B. E.
Affiliation: Schlumberger Cambridge Research, Cambridge, United Kingdom
Pages: 109-114
Published: 199505
Text Language: English
Publisher: Geological Society Publishing House, London, United Kingdom
References: 3
Accession Number: 1995-065682
Categories: Economic geology, geology of energy sourcesApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects.
N51°00'00" - N61°10'00", W04°00'00" - E11°00'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 199523
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