contribution to limestone porosity

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Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2404(16)
... Combined analyses of cores, borehole geophysical logs, and cyclostratigraphy produced a new conceptual hydrogeologic framework for the triple-porosity (matrix, touching-vug, and conduit porosity) karst limestone of the Biscayne aquifer in a 0.65 km 2 study area, SE...
Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP333.15
EISBN: 9781862395817
... with similar general characteristics in the two types of limestones. This agrees with the weak correlation found between porosity (%) and Hirschwald coefficient (see Table  4 ), mainly related to the narrow range of variation of the latter parameter regardless of porosity values. Table 3. Porosity, water...
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Journal Article
Journal: Interpretation
Published: 14 January 2019
Interpretation (2019) 7 (1): B9-B32.
...-type logs track the contributing porosity types defined from the thin section as fractions of the total rock and pore space. In this study, they are normalized to one, so the trends can be clearly seen in these Upper Cambrian, low-total-porosity limestones and dolostones. Because the diagenesis log...
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Series: Geological Society, London, Special Publications
Published: 01 January 2004
DOI: 10.1144/GSL.SP.2004.235.01.10
EISBN: 9781862394834
... of subsurface petrophysical properties. A particular focus in the context of the present volume is the degree to which the Leg 194 data set is relevant for understanding how carbonate porosity-permeability distributions change during dolomitization. Thus, the limestones are of interest as possibly representing...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 2011
AAPG Bulletin (2011) 95 (10): 1745-1762.
... highly evaporated seawater. These brines descended deep into the basin because of their greater density and then ascended because of heating and thermal convection. Reinecke dolomites have lower porosity but higher permeability than the surrounding limestones. As a result, dolomites provide “raceways...
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Journal Article
Published: 01 June 2014
Environmental Geosciences (2014) 21 (2): 39-57.
... and then characterized according to presence in each rock type, relative abundance, and surface area of adjacent minerals, pore and pore-throat diameters, and degree of connectivity. We observe a bimodal distribution of porosity as a function of both pore diameter and pore-throat diameter. The contribution of pores...
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Series: Geological Society, London, Special Publications
Published: 01 January 2007
DOI: 10.1144/GSL.SP.2007.271.01.25
EISBN: 9781862395190
... is different from white crusts as they consist of silt-sized quartz grains and opaque particles ( Fig. 6c ). The contribution of flyash ( Primerano et al. 2000 ) and the increased organic carbon contents of black framboidal crusts of porous limestone have already been documented for several buildings...
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Series: GSA Field Guides
Published: 29 March 2018
DOI: 10.1130/2018.0050(02)
EISBN: 9780813756509
... Declaring how important limestone is begs a few basic questions to be relevant to educators: Limestone and its close cousin dolomite form the bedrock beneath a very large portion of Tennessee and surrounding states, making it a readily available teaching resource for all who know how to harness...
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Journal Article
Journal: Interpretation
Published: 10 October 2013
Interpretation (2013) 1 (2): T143-T155.
...     g / cm 3 ). It then follows that the total matrix effect on neutron-porosity logs is an addition of Δ φ matrix and Δ φ N sh , i.e., interactive porosity departures due to apparent limestone matrix scale (calculated from SNUPAR in freshwater-filled...
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Journal Article
Published: 01 January 2010
Rocky Mountain Geology (2010) 45 (2): 133-150.
... the standard technique employed. There are also a few very high values (>1000 mD) that are due to highly conductive fractures observed in the core. Figure 9 shows the relationship between permeability and porosity for limestone and dolostone samples. The limestone samples have a range of porosity...
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Journal Article
Journal: Geophysics
Published: 02 May 2013
Geophysics (2013) 78 (3): D151-D168.
...- and gas-filled base-case formations perturbed from the limestone block (see Table  2 for base-case descriptions). We observe that the DFD method accurately reproduces full MCNP calculations as formation porosity and/or fluid constituents vary. For the cases shown in Figure  6 , MCNP calculations required...
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Journal Article
Journal: AAPG Bulletin
Published: 15 March 2019
AAPG Bulletin (2019) 103 (3): 723-744.
...Kyle E. Gorynski; Mark H. Tobey; Daniel A. Enriquez; Thomas M. Smagala; Jill L. Dreger; Richard E. Newhart ABSTRACT For oil-rich shales, current solvent extraction– and thermal extraction–based methods inaccurately measure hydrocarbon-filled porosity ( φ HC ). Moreover, the hydrocarbon composition...
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Journal Article
Journal: AAPG Bulletin
Published: 01 July 2012
AAPG Bulletin (2012) 96 (7): 1235-1251.
...Abdulaziz M. AlMuhaidib; Mrinal K. Sen; M. Nafi Toksöz Abstract The main objective of this article is to obtain reservoir properties, such as porosity, both at the well locations and in the interwell regions from seismic data and well logs. The seismic and well-log data sets are from an oil field...
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Series: GSA Special Papers
Published: 10 May 2018
DOI: 10.1130/2018.2531(08)
EISBN: 9780813795317
... completely dolomitized to having mixed lithologies with low-porosity, low-permeability limestone matrix encasing irregular zones of dolomitization. The dolomitized zones can provide a network of higher porosity and permeability and control fluid flow throughout the reservoir. Grammer et al. (2010...
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Series: Geological Society, London, Special Publications
Published: 01 January 2002
DOI: 10.1144/GSL.SP.2002.205.01.26
EISBN: 9781862394537
..., particularly in the polluted city centre. Gypsum, which is not an indigenous mineral in the limestone, can contribute up to 70% of the crust composition and indicates the importance of air-derived SO 2 . This mineralogical change in stone composition leads to changes in physical properties, by strengthening...
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Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP331.13
EISBN: 9781862395794
... the mean density of the medium-grained limestone was 19% greater (1.957 g cm −3 ). These density differences reflect the differences in porosities rather than a difference in mineralogical composition, as both limestones are primarily composed of calcite while the contribution of other minerals is less...
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Journal Article
Journal: The Leading Edge
Published: 01 November 2003
The Leading Edge (2003) 22 (11): 1102-1108.
..., a 3D view of an x-ray CT image of a full diameter core sample from a depth of 1138 ft. The figure illustrates a typical interconnected vug system in the Eocene-aged Ocala Limestone. Vugs or vuggy porosity can be defined as pore spaces larger than or within the particles of rock and commonly present...
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Series: AAPG Memoir
Published: 01 January 2010
DOI: 10.1306/13181289M923410
EISBN: 9781629810263
.... Conventional logs were used for broad stratigraphic correlations, whereas the XRMI static and dynamic equalized images were used to document millimeter-scale variations in rock fabric, porosity, and permeability of the limestone reservoir. Basic statically equalized borehole images were further analyzed...
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Journal Article
Journal: Interpretation
Published: 16 July 2015
Interpretation (2015) 3 (3): SU59-SU70.
... porosity . Although the importance of porosity and pore-evolution has long been recognized (see Johnson et al., 2004 ; Steefel et al., 2005 ; Anovitz and Cole, 2015 ), the contribution of nano- to microscale porosity to subsurface flow and retention has only recently been demonstrated ( Kahle et al...
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Series: Special Publications
Publisher: SEPM (Society for Sedimentary Geology)
Published: 01 January 2017
DOI: 10.2110/sepmsp.109.07
EISBN: 9781565763531
... The IGME is thanked for access to mine cores. This is a contribution to the research projects CGL2014-53548-P and CGL2014-54180-P (MINECO, Spanish Government). The FPU program (Ministerio de Educación, Cultura y Deporte, Spanish Government) is thanked for sponsoring the PhD Thesis of I. López...
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