Processes controlling porosity and permeability in volcanic reservoirs from the Austral and Neuquén basins, Argentina

Sruoga, Patricia; Rubinstein, Nora Alicia

doi:10.1306/08290605173

Cited by 114 publications

(52 citation statements)

References 16 publications

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“…Since the discovery of these fields, numerous studies have detailed the impact of igneous rocks on hydrocarbon plays (e.g. Schofield and Jolley (2013), Schutter (2003), Sruoga and Rubinstein (2007)). However, few studies have detailed the architecture of extrusive and intrusive volcanic rocks in the Gippsland Basin.…”

Section: Introductionmentioning

confidence: 99%

Characterising extrusive and intrusive magmatism at the Kipper Field, Gippsland Basin, using 3D seismic data

Meeuws

Reynolds

Holford

et al. 2016

ASEG Extended Abstracts

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SUMMARYIncreased hydrocarbon exploration along rifted continental margins indicates the need of a better understanding of the impact and influence of igneous rocks on hydrocarbon systems as they are often present in these tectonic settings. The southern Australian margin contains several petroliferous sedimentary basins which contain Cretaceous-Cenozoic igneous rocks and is therefore an ideal study area to investigate both the positive and negative effects on hydrocarbon systems. In particular, the Kipper Field in the offshore Gippsland Basin forms an excellent example of a volcanic play, as it holds a 328 m gas column and 14 m oil leg sealed by a >100 m thick basaltic lava flow juxtaposed against a sealing fault. The basin also contains a number of cross-cutting and layer-parallel type intrusions, although their impact on the petroleum system is as-yet unclear. Seismic interpretation techniques such as spectral decomposition and opacity rendering combined with electrical log signatures allowed us to identify the lava flow and intrusions down dip from the fault. Whether this fault has acted as a conduit for the magma responsible for the lava flow is still unclear. Future work will aim to further delineate and constrain flow paths of the intrusive and extrusive rocks near the Kipper Field and their influence on the Kipper play. This study highlights the importance of volcanic rocks in hydrocarbon basins and the possible effect they can have on hydrocarbon systems.

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Section: Introductionmentioning

confidence: 99%

Characterising extrusive and intrusive magmatism at the Kipper Field, Gippsland Basin, using 3D seismic data

Meeuws

Reynolds

Holford

et al. 2016

ASEG Extended Abstracts

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“…Following the description of primary and secondary porosity formation processes given in Sruoga and Rubinstein (2007), the processes documented in the rocks of the Tepoztlán Formation can be classified as follows:…”

Section: Pore Types and Originmentioning

confidence: 99%

“…4b), commonly observed in tuffs, is produced by dissolution of crystal phases by deuteric fluids. During the deuteric process, feldspar alteration involves an initial dissolution stage in fluids with a low pH and is frequently followed by precipitation of new feldspar phases (Sruoga and Rubinstein, 2007). The best time constraint for feldspar dissolution is the presence of vapour-phase crystals in relict crystal sections and the precipitation of a newly formed K-feldspar (Sruoga and Rubinstein, 2002).…”

Section: Pore Types and Originmentioning

confidence: 99%

Volcanic settings and their reservoir potential: An outcrop analog study on the Miocene Tepoztlán Formation, Central Mexico

Lenhardt

Götz

2011

Journal of Volcanology and Geothermal Research

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The reservoir potential of volcanic and associated sedimentary rocks is less documented in regard to groundwater resources, and oil and gas storage compared to siliciclastic and carbonate systems. Outcrop analogue studies within a volcanic setting enable to identify values followed by tuffs, conglomerates, sandstones and tuffaceous breccias. On the contrary, the highest permeabilities can be found in the conglomerates, followed by tuffs, tuffaceous breccias, sandstones and lavas. The knowledge of these petrophysical rock properties provides important information on the reservoir potential of volcanic settings to be integrated to 3D subsurface models.

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“…During magma crystallization, H 2 O, CO 2 , and other volatile components can be exsolved from the magma and vesicles may be produced (Norton and Cathles, 1973;Wang and Zhou, 1982;Sruoga and Rubinstein, 2007). Vesicular structures are widely developed in basalt and basalt pyroclastic rocks.…”

Section: Vesicular Structurementioning

confidence: 99%

Formation Mechanisms of Paleogene Igneous Rock Plays in Huimin Sag, Eastern China

Chang

Han

et al. 2011

Energy Exploration & Exploitation

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In order to understand the impact of volcanism and intrusion on the source rocks, how the pores and fissures formed and how the hydrocarbon was trapped, this study focuses on the formation mechanisms of the igneous rock plays in the Huimin Sag based on geochemical and lithological analyses and typical anatomy. The results indicate that volcanism enhanced the formation of Es 3 source rocks with high TOC (3.41-5.12%) in the distribution areas of igneous rocks. Volcanism caused an abnormal heat field and accelerated the maturation of hydrocarbon source rocks, leading to a higher heat gradient (3.4-4.4 °C /100 m), increase of HC and chloroform bitumen "A" contents, earlier hydrocarbon generation threshold and higher biomarker maturity closer to the igneous rocks. The primary fractures, vesicular structures, inter-breccia pores, intergranular pores, intercrystal and intracrystal pores are primarily-formed. The structural fractures and corrosion space are secondarily formed. Rising fluid pressure associated with volcanism accelerated the hydrocarbons expulsion. Igneous body can act as a migration pathway or a seal constrained by its physical property. Volcanism in the Huimin Sag produces diaper arch trap, overlap trap in volcano slope and drape anticline trap on the volcanic cone. Five models for igneous rocks plays in the Huimin Sag, such as volcaniclastic play with outside source rocks, diabase plays with interior and exterior source rocks, basalt plays with exterior and mixed source rocks are proposed.

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Processes controlling porosity and permeability in volcanic reservoirs from the Austral and Neuquén basins, Argentina

Cited by 114 publications

References 16 publications

Characterising extrusive and intrusive magmatism at the Kipper Field, Gippsland Basin, using 3D seismic data

Characterising extrusive and intrusive magmatism at the Kipper Field, Gippsland Basin, using 3D seismic data

Volcanic settings and their reservoir potential: An outcrop analog study on the Miocene Tepoztlán Formation, Central Mexico

Formation Mechanisms of Paleogene Igneous Rock Plays in Huimin Sag, Eastern China

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