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Utilizing seismic-derived rock properties for horizontal drilling in the Arabian Gulf

Sean Rahati, Hussein Al-Otaibi and Yousef Al-Shobail
Utilizing seismic-derived rock properties for horizontal drilling in the Arabian Gulf
Leading Edge (Tulsa, OK) (December 2011) 30 (12): 1414-1418

Abstract

The offshore stringer sands that are north of Saudi Arabia contain significant oil and gas, but imaging these sands has been challenging. The sands and shales do not have a sufficient acoustic impedance contrast to appear in normal-incident seismic data, and the sand distribution is too erratic and complex to be predicted with subsurface stratigraphic techniques. Simultaneous offset inversion was used to separate sands from shales in the prestack domain based on elastic rock properties. The results have allowed us, for the first time, to target the sands via geosteering horizontal wells to maximize reservoir contact. Furthermore, the underlying massive main sand interval is better delineated and shows structural and stratigraphic events that were encountered during drilling, but never predicted. These results will have a significant impact on the overall drilling and production efficiency.


ISSN: 1070-485X
EISSN: 1938-3789
Serial Title: Leading Edge (Tulsa, OK)
Serial Volume: 30
Serial Issue: 12
Title: Utilizing seismic-derived rock properties for horizontal drilling in the Arabian Gulf
Affiliation: Saudi Aramco, Saudi Arabia
Pages: 1414-1418
Published: 201112
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 3
Accession Number: 2012-012642
Categories: Economic geology, geology of energy sourcesApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch map
N24°00'00" - N31°00'00", E48°00'00" - E57°00'00"
N17°00'00" - N32°30'00", E34°45'00" - E57°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 201207
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