Porosity and permeability in volcanic rocks: a case study on the Serie Tobı́fera, South Patagonia, Argentina

Sruoga, Patricia; Rubinstein, Nora Alicia; Hinterwimmer, Gerardo

doi:10.1016/s0377-0273(03)00419-0

Cited by 124 publications

(52 citation statements)

References 11 publications

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“…Organic-matter rich shale intervals may have source rock potential (Galeazzi, 1998;Cagnolatti et al, 1996) although they are only locally developed. The Estancia Dos Lagunas field in Santa Cruz Province produces gas mainly from volcanic reservoir rocks in the Tobifera Formation (Hinterwimmer, 2002;Rubinstein, 2002, 2007;Sruoga et al, 2004).…”

Section: Stratigraphy and Petroleum System Elementsmentioning

confidence: 99%

Burial, Temperature and Maturation History of the Austral and Western Malvinas Basins, Southern Argentina, Based on 3d Basin Modelling

Sachse

Anka

Littke

et al. 2016

Journal of Petroleum Geology

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Section: Stratigraphy and Petroleum System Elementsmentioning

confidence: 99%

Burial, Temperature and Maturation History of the Austral and Western Malvinas Basins, Southern Argentina, Based on 3d Basin Modelling

Sachse

Anka

Littke

et al. 2016

Journal of Petroleum Geology

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“…The average porosity is 6%-11%. Effective reservoirs cannot form in volcanic rocks of other lithofacies and lithologies [35]. Productivity of the volcanic reservoir is controlled by the original reservoir space [36][37][38].…”

Section: Factors Controlling the Physical Properties Of Reservoirs Lomentioning

confidence: 99%

Hydrocarbon accumulation mechanism and structure of large-scale volcanic weathering crust of the Carboniferous in northern Xinjiang, China

Zou

Hou

Tao

et al. 2011

Sci. China Earth Sci.

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The Upper Carboniferous in northern Xinjiang, China was formed in a post-collisional depression and collapsed structural setting. Within the Upper Carboniferous, volcanic rocks and source rocks alternate over a wide region. At the end of the Carboniferous, these layers were uplifted by plate collisions and subsequently weathered and leached. Volcanic weathering and leaching led to the establishment of weathered crusts that can be divided into five layers. Corrosion and crumble zones in these layers form favorable reservoirs. Volcanic weathering crust formed in sub-aerially exposed paleogeomorphic areas; the five relatively continuous layers are generally preserved in paleogeomorphic lowland and slope regions, but the upper soil layer is usually absent in structurally higher parts of the rock record. The thickness of the weathered layer has a positive nonlinear exponential relationship to the duration of weathering and leaching, and the dynamic equilibrium time of weathered crust is about 36.3 Ma. The thickest weathered layer (~450 m) is located in fracture zones. Weathered crusts are possible from a range of volcanic rocks with different lithologies, given sufficient time for weathering and leaching. The combination of volcanic weathered crust and source rocks results in three types of hydrocarbon accumulation models: (1) sequences of volcanic weathered crust interbedded with source rocks, (2) a quasi-layered weathered volcanic core located above source rocks, and (3) volcanic rocks associated with pectinate unconformities adjacent to source rocks. Each of these three types has the potential to form a giant stratigraphic reservoir of volcanic weathered crust. This knowledge has changed the traditional exploration model of searching for favorable lithologic and lithofacies zones in volcanic rocks, and has changed the viewpoint that the Carboniferous does not have the genetic potential to be the basement of the basin in northern Xinjiang. The concepts developed here are of great scientific significance and application for focusing oil and gas exploration on volcanic weathered crust. As such, the Paleozoic volcanic weathered crust in the midwestern part of China may possibly contain large-scale stratigraphic reservoirs and thus could be a new oil and gas exploration target in the future. Carboniferous in northern Xinjiang, volcanic weathering crust, stratigraphic reservoir, accumulation mechanism and model Citation:Zou C N, Hou L H, Tao S Z, et al. Hydrocarbon accumulation mechanism and structure of large-scale volcanic weathering crust of the Carboniferous in

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“…At present, there are many igneous reservoirs in Songliao, Bohaiwan, Junggar and Sichuan Basins which show great exploration potential [8,9]. In recent years, great progress has been made in the examinations of volcanic reservoirs, including studies regarding the classifications of lithology and lithofacies [10][11][12][13][14], variations in porosity and permeability [15,16], classification of reservoir space types [17][18][19], forming mechanisms [20][21][22][23], reservoir seismic identification [24][25][26][27], reservoir evaluation and prediction [9,12,18,21], and so on.…”

Section: Introductionmentioning

confidence: 99%

Pore Distribution Characteristics of the Igneous Reservoirs in the Eastern Sag of the Liaohe Depression

et al. 2017

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In the Es 3 formation (third section of the Shahejie) of the Eastern sag section of the Liaohe Depression, basalt and trachyte are predominant in the igneous rock. The reservoir consists of complex reservoir space types. Based on the porosity bins of nuclear magnetic logging and the porosity distribution of electric imaging logging, the pores' sizes and distribution, as well as the mutual connectivity of the reservoir, were analyzed. Also, the characteristics of the different reservoirs were summarized. In regards to the oil reservoirs, large pores (PS>10) were found to account for the majority of the reservoir spaces, and the pore distribution was concentrated and well connected. However, for the poor oil reservoirs, the large and small pores were found to alternate, and the pore distribution was scattered and poorly connected. Within the dry layers, the smaller pores (PS<10) were predominant. The pore distributions were found to be influenced by lithology, facies, and tectonism. The reservoirs of the pyroclastic flow of the explosive facies had good connectivity, and the interlayer heterogeneity was relatively weak. This reservoir's pore distributions were found to be mainly dominated by the larger pores (PS10-PS13), which displayed a concentrated distribution mainly in one porosity bin. Therefore, it was taken as a favorable facie belt in the eastern sag of the Liaohe Depression. The examination of the pore distribution characteristics of the igneous rock was the key to the evaluation of the properties and effectiveness of the igneous reservoirs in this study, which potentially has great significance to the future exploration and development of igneous rock.

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Porosity and permeability in volcanic rocks: a case study on the Serie Tobı́fera, South Patagonia, Argentina

Cited by 124 publications

References 11 publications

Burial, Temperature and Maturation History of the Austral and Western Malvinas Basins, Southern Argentina, Based on 3d Basin Modelling

Burial, Temperature and Maturation History of the Austral and Western Malvinas Basins, Southern Argentina, Based on 3d Basin Modelling

Hydrocarbon accumulation mechanism and structure of large-scale volcanic weathering crust of the Carboniferous in northern Xinjiang, China

Pore Distribution Characteristics of the Igneous Reservoirs in the Eastern Sag of the Liaohe Depression

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