Journal Article10.1306/07142018253
Characterization of five unconventional diatomaceous (opal-A) reservoirs, Monterey Formation, San Joaquin Valley, California
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TL;DR: In this article, the authors provide general guidance about characterization of unconventional diatomaceous reservoirs and the identification of factors that most dramatically influence performance, such as high porosity and low permeability.
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Abstract: Unconventional opal-A and opal-CT diatomaceous reservoirs in the Monterey Formation of the San Joaquin Valley in California have produced for more than 30 yr. These opal-A reservoirs are characterized by high porosity (>50%) and low permeability ( 45% [Cymric and McKittrick fields]) or are very thick (>1000 ft thick [Lost Hills field]). These insights provide general guidance about characterization of unconventional diatomaceous reservoirs and the identification of factors that most dramatically influence performance.
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Fluid migration pathways to groundwater in mature oil fields: Exploring the roles of water injection/production and oil-well integrity in California, USA.
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References
Geology and Diagenesis of Belridge Diatomite and Brown Shale, San Joaquin Valley, California: ABSTRACT
TL;DR: The late Miocene to Pliocene argillaceous and siliceous shales of the upper Monterey Formation (the Brown Shale and overlying Belridge Diatomite) represent laterally continuous deposits of nearshore, diatom-rich muds and open marine, argillized, diablo-bearing muds on a developing shelf and growing anticline which flanked the San Joaquin basin this article.
Growth Fault-Bend Folding at Southeast Lost Hills, San Joaquin Valley, California
TL;DR: In this paper, a case study of the Lost Hills anticline of the San Joaquin valley is presented, where a simple structural process (fault-bend folding) results in complex growth stratigraphy.