Single- and two-phase fluid flow properties of cataclastic fault rocks in porous sandstone

Tueckmantel, Christian; Fisher, Q.J.; Grattoni, Carlos A.; Aplin, Andrew C.

doi:10.1016/j.marpetgeo.2011.07.009

Cited by 32 publications

(26 citation statements)

References 24 publications

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“…Preferential feldspar grain-size reduction has also been documented within conjugate sets of deformation bands within poorly consolidated arkosic sands of the Vienna Basin, Austria, by Exner & Tschegg (2012). Intense cataclasis creating angular grains and broadening the grain-size distribution considerably lowers porosity as a result of more efficient grain packing (Main et al 2001;Tueckmantel et al 2012).…”

Section: Distribution-localization Of Deformation Bands As a Functionmentioning

confidence: 96%

Deformation band development as a function of intrinsic host-rock properties in Triassic Sherwood Sandstone

Griffiths

Faulkner

Edwards³

et al. 2016

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Deformation bands significantly alter the local petrophysical properties of sandstone reservoirs, although it is not known how the intrinsically variable characteristics of sandstones (e.g. grain size, sorting and mineralogy) influence the nature and distribution of deformation bands. To address this, cataclastic deformation bands within fine-and coarse-grained Triassic Sherwood Sandstone at Thurstaston, UK were analysed, for the first time, using a suite of petrographical techniques, outcrop studies, helium porosimetry and image analysis. Deformation bands are more abundant in the coarse-grained sandstone than in the underlying fine-grained sandstone. North-and south-dipping conjugate sets of cataclastic bands in the coarse-grained sandstone broadly increase in density (defined by number/m 2 ) when approaching faults. Microstructural analysis revealed that primary grain size controls deformation band density. Deformation bands in both coarse and fine sandstones led to significantly reduced porosity, and so can represent barriers or baffles to lateral fluid flow. Microstructural data show preferential cataclasis of K-feldspar grains within the host rock and deformation band. The study is of direct relevance to the prediction of reservoir quality in several petroleum-bearing Lower Triassic reservoirs in the near offshore, as deformation band development occurred prior to Carboniferous source-rock maturation and petroleum migration.Gold Open Access: This article is published under the terms of the CC-BY 3.0 license.

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Section: Distribution-localization Of Deformation Bands As a Functionmentioning

confidence: 96%

Deformation band development as a function of intrinsic host-rock properties in Triassic Sherwood Sandstone

Griffiths

Faulkner

Edwards³

et al. 2016

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“…Numerous studies describe cataclastic deformation bands, characterized by shear and compaction resulting in grain crushing and porosity reduction within the bands (Antonellini et al 1994;Lothe et al 2002;Torabi & Fossen 2009). The impact of cataclastic, low-porosity deformation bands on the permeability of faults is being extensively studied (Shipton et al 2005;Ballas et al 2012;Tueckmantel et al 2012;Torabi et al 2013), identifying cataclastic bands as baffles or barriers to flow in porous reservoirs. However, deformation bands are also found to develop internal slip surfaces at a later stage, as initially described by Aydin & Johnson (1978) and also further discussed by Rotevatn et al (2008).…”

Section: Introductionmentioning

confidence: 99%

Fault baffle to conduit developments: reactivation and calcite cementation of deformation band fault in aeolian sandstone

Skurtveit

Torabi

Alikarami

et al. 2014

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The damage zone of three small faults in the Navajo and Page formations, located on the NE side of San Rafael Swell, Utah, USA, are studied. Scanlines and microstructural analyses are used to document three distinct deformation events: (1) an early phase creating cataclastic deformation bands, during which most of the displacement on the fault took place; (2) a fracturing event with opening and shearing along fractures; and (3) fluid flow and local calcite precipitation along the NW-trending faults. Microstructural characterization of deformation structures shows complex interaction between deformation bands, fractures and the calcite precipitation. Calcite cement is observed as veins in the host rock and along cataclastic bands, with varying amount of cataclastic material floating within the veins. In addition to patchy calcite cement in the host rock, extensive poikilotopic cementation is observed to extend into cataclastic bands with a low degree of cataclasis. However, some cataclastic bands with a high degree of cataclasis show almost no cementation. Development of deformation bands and their link to fracturing affected the flow field, from a fault baffle to a conduit. Calcite cementation reveals the flow paths, before cementation recreated the fault baffle.

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“…Although offering a pragmatic solution to a complex problem, the fundamental shortcomings and limitations of this approach have been pointed out by several workers (Fredman et al, 2008;Manzocchi et al, 2010Manzocchi et al, , 2008Tueckmantel et al, 2012;Tveranger et al, 2005). These methods are restricted by the convention of representing complex fault zones, which are essentially 3D geological features, as membranes.…”

Section: Introductionmentioning

confidence: 99%

“…However, efforts towards producing explicit fault zone models have been fraught by four key problems: 1) A lack of systematically quantified descriptions of the spatial distribution of fault rock facies (Braathen et al, 2009), 2) a lack of key petrophysical data such as two-phase flow properties of fault rocks (Al-Busafi et al, 2005;Al-Hinai et al, 2008;Tueckmantel et al, 2012), 3) a high computation cost related to the necessity of using high-resolution grids, and 4) a lack of robust upscaling techniques for highly heterogeneous rocks.…”

Section: Introductionmentioning

confidence: 99%

A method for generating volumetric fault zone grids for pillar gridded reservoir models

Røe

Tveranger

2015

Computers & Geosciences

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a b s t r a c tThe internal structure and petrophysical property distribution of fault zones are commonly exceedingly complex compared to the surrounding host rock from which they are derived. This in turn produces highly complex fluid flow patterns which affect petroleum migration and trapping as well as reservoir behavior during production and injection. Detailed rendering and forecasting of fluid flow inside fault zones require high-resolution, explicit models of fault zone structure and properties. A fundamental requirement for achieving this is the ability to create volumetric grids in which modeling of fault zone structures and properties can be performed. Answering this need, a method for generating volumetric fault zone grids which can be seamlessly integrated into existing standard reservoir modeling tools is presented. The algorithm has been tested on a wide range of fault configurations of varying complexity, providing flexible modeling grids which in turn can be populated with fault zone structures and properties.

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Single- and two-phase fluid flow properties of cataclastic fault rocks in porous sandstone

Cited by 32 publications

References 24 publications

Deformation band development as a function of intrinsic host-rock properties in Triassic Sherwood Sandstone

Deformation band development as a function of intrinsic host-rock properties in Triassic Sherwood Sandstone

Fault baffle to conduit developments: reactivation and calcite cementation of deformation band fault in aeolian sandstone

A method for generating volumetric fault zone grids for pillar gridded reservoir models

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