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Seismic pore-pressure predicted using reflection tomography and 4-C seismic data

Colin M. Sayers, Marta J. Woodward and Robert C. Bartman
Seismic pore-pressure predicted using reflection tomography and 4-C seismic data (in Pore pressure, Bob Bruce (prefacer))
Leading Edge (Tulsa, OK) (February 2002) 21 (2): 188-192

Abstract

Pore pressure is important for both exploration and drilling. During the exploration phase, a prediction of pore pressure can be used to develop fluid migration models, to study the effectiveness of seals, and to rank prospects. In drilling, a predrill pore pressure prediction allows the appropriate mud weight to be selected and allows the casing program to be optimized, thus enabling safe and economic drilling. A predrill estimate of pore pressure can be obtained from seismic velocities given a suitable velocity to pore pressure transform. This paper describes the use of seismic reflection tomography and 4-C seismic data for pore pressure prediction. Reflection tomography gives higher spatial resolution than conventional methods based on the Dix equation, while the additional information provided by 4-C data may help to reduce the ambiguity between variations in pore pressure and variations in lithology and fluid content.


ISSN: 1070-485X
EISSN: 1938-3789
Serial Title: Leading Edge (Tulsa, OK)
Serial Volume: 21
Serial Issue: 2
Title: Seismic pore-pressure predicted using reflection tomography and 4-C seismic data
Title: Pore pressure
Author(s): Sayers, Colin M.Woodward, Marta J.Bartman, Robert C.
Author(s): Bruce, Bobprefacer
Affiliation: Schlumberger, Houston, TX, United States
Affiliation: BHP Petroleum, Houston, TX, United States
Pages: 188-192
Published: 200202
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
Accession Number: 2002-020792
Categories: Economic geology, geology of energy sourcesApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., block diag.
N18°00'00" - N30°04'00", W98°00'00" - W80°30'00"
Secondary Affiliation: WesternGeco, USA, United StatesDevon Energy, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 200208
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