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GEOREF RECORD

A century of oil-field operations and earthquakes in the greater Los Angeles Basin, Southern California

Egill Hauksson, Thomas Gobel, Jean-Paul Ampuero and Elizabeth Cochran
A century of oil-field operations and earthquakes in the greater Los Angeles Basin, Southern California (in Injection-induced seismicity, Robert Habiger (editor) and Gregory Beroza (editor))
Leading Edge (Tulsa, OK) (June 2015) 34 (6): 650-656

Abstract

Most of the seismicity in the Los Angeles Basin (LA Basin) occurs at depth below the sediments and is caused by transpressional tectonics related to the big bend in the San Andreas fault. However, some of the seismicity could be associated with fluid extraction or injection in oil fields that have been in production for almost a century and cover approximately 17% of the basin. In a recent study, first the influence of industry operations was evaluated by analyzing seismicity characteristics, including normalized seismicity rates, focal depths, and b-values, but no significant difference was found in seismicity characteristics inside and outside the oil fields. In addition, to identify possible temporal correlations, the seismicity and available monthly fluid extraction and injection volumes since 1977 were analyzed. Second, the production and deformation history of the Wilmington oil field were used to evaluate whether other oil fields are likely to experience similar surface deformation in the future. Third, the maximum earthquake magnitudes of events within the perimeters of the oil fields were analyzed to see whether they correlate with total net injected volumes, as suggested by previous studies. Similarly, maximum magnitudes were examined to see whether they exhibit an increase with net extraction volume. Overall, no obvious previously unidentified induced earthquakes were found, and the management of balanced production and injection of fluids appears to reduce the risk of induced-earthquake activity in the oil fields.


ISSN: 1070-485X
EISSN: 1938-3789
Serial Title: Leading Edge (Tulsa, OK)
Serial Volume: 34
Serial Issue: 6
Title: A century of oil-field operations and earthquakes in the greater Los Angeles Basin, Southern California
Title: Injection-induced seismicity
Author(s): Hauksson, EgillGobel, ThomasAmpuero, Jean-PaulCochran, Elizabeth
Author(s): Habiger, Roberteditor
Author(s): Beroza, Gregoryeditor
Affiliation: California Institute of Technology, Pasadena, CA, United States
Pages: 650-656
Published: 201506
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 10
Accession Number: 2015-087023
Categories: Environmental geologySeismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch map
N33°34'60" - N34°04'60", W118°30'00" - W117°40'00"
Secondary Affiliation: U. S. Geological Survey,
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: 201537
Program Name: USGSOPNon-USGS publications with USGS authors
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