Porosity loss in sand by grain crushing—experimental evidence and relevance to reservoir quality

Chuhan, Fawad A; Kjeldstad, A.; Bjørlykke, Knut; Höeg, Kaare

doi:10.1016/s0264-8172(01)00049-6

Cited by 190 publications

(94 citation statements)

References 13 publications

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“…This technique is also much less laborious, very accurate and non-destructive (Roberts et al, 1998). These properties are very important because grain crushing can result in tighter grain packing and a reduction of the primary porosity (Chuhan et al, 2002), thereby yielding an incorrect measurement. Fig.…”

Section: Materials and Methodologymentioning

confidence: 99%

“…The porosity is a primary determinant of the density and permeability of sediments; therefore, the porosity is a vital input for basin modelling (Chuhan et al, 2002). According to Poizot et al (2013), the permeability of a sand bed may also be correlated with the sand grains' size (mean, sorting and skewness) and sphericity in addition to the bed porosity.…”

Section: Introductionmentioning

confidence: 99%

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Beach nourishment effects on sand porosity variability

Román-Sierra

Muñoz-Pérez

Navarro-Pons

2014

Coastal Engineering

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A standard assumption in coastal engineering is that the porosity of natural beach sand (non-cohesive) is 40%. However, is this assumption correct for all beach sand? This paper proposes an accurate and simplified method to assess changes in sand porosity after beach nourishment by means of in-situ density surveys through a nuclear densimeter. This novel application has been applied to different beaches in the southwest of Spain according to the tidal range, grain size and beach morphology in several terms. General results show that sand porosities range from 25.6% to 43.4% after beach nourishment works. This research can be considered a support tool in coastal engineering to find shifting sand volumes as a result of sand porosity variability after beach nourishment and later marine influence.

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Section: Materials and Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Beach nourishment effects on sand porosity variability

Román-Sierra

Muñoz-Pérez

Navarro-Pons

2014

Coastal Engineering

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“…Grain-scale fracture and rearrangement are believed to be mechanisms of importance in controlling the porosity and permeability evolution of sedimentary rocks in rapidly subsiding basin settings [Chuhan et al, 2002[Chuhan et al, , 2003Donaldson et al, 1995]. They may also be of importance in controlling production-related compaction of hydrocarbon reservoir rocks, as a result of rapidly changing effective stresses, leading to surface subsidence [Doornhof et al, 2006;Hettema et al, 2002;Schutjens et al, 1994;Zoback and Byerlee, 1976].…”

Section: Introductionmentioning

confidence: 99%

Failure behavior of single sand grains: Theory versus experiment

et al. 2011

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[1] Grain-scale brittle fracture and grain rearrangement play an important role in controlling the compaction behavior of reservoir rocks during the early stages of burial. Therefore, the understanding of single-grain failure is important. We performed constant displacement rate crushing tests carried out on selected, well-rounded, single sand grains and on randomly sampled grains from different grain size (d) batches of pure quartz sand. Applying a Hertzian fracture mechanics model for grain crushing, the critical load at failure (F c ) data obtained for the selected grains were converted into an accurate estimate of the size of flaws associated with failure (c f ). Similarly, the distributed F c data obtained from the different batch samples were converted into distributions of grain failure stress. Weibull weakest link theory could not explain the observed grain failure behavior. On the contrary, the Hertzian grain failure criterion enabled the conversion of the distributed F c data, for the batch samples, into distributions of c f , assuming spherical grains, or of "effective" radius of curvature (r g ), characterizing contact surface asperities in the case of nonspherical grains. In contrast to the model of Zhang et al. (1990), our work shows that there is no clear physical basis for a grain size dependence of c f . However, since roundness data for dune sands exhibit a similar relation between r g and d, as seen in our grain size batches, it is inferred that the Hertzian fracture mechanics model assuming nonspherical grains with a distributed r g is the most physically reasonable model for grain failure.

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“…At the higher temperatures and pressures of deep burial, chemical compaction takes over and includes mineral growth and inter-granular pressure solution (e.g. Houseknecht, 1987;Chuhan et al, 2002;Paxton et al, 2002). Mechanical and chemical compaction processes are irreversible and eliminate inter-granular volume (IGV) that would otherwise remain fluidfilled or become occupied by cements that might dissolve during later diagenesis (Houseknecht, 1987).…”

Section: Introductionmentioning

confidence: 99%

“…Second, the amount of cement derived by local grain dissolution is negligible or known. And third, the amount of framework mass exported by grain dissolution is negligible or known (Lundegard, 1992).The initial or depositional porosity for the Triassic Skagerrak sandstones samples is assumed to have been 45% (Bears and Weyl, 1973;Houseknecht, 1987;Lundegard, 1992;Chuhan et al, Cod sample sets, whereas the COPL-CEPL results of the Gaupe sample set indicate a more mixed porosity loss, albeit with a stronger tendency towards compaction.…”

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confidence: 99%

Importance of vertical effective stress for reservoir quality in the Skagerrak Formation, Central Graben, North Sea

Stricker

Jones

Grant

2016

Marine and Petroleum Geology

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Porosity loss in sand by grain crushing—experimental evidence and relevance to reservoir quality

Cited by 190 publications

References 13 publications

Beach nourishment effects on sand porosity variability

Beach nourishment effects on sand porosity variability

Failure behavior of single sand grains: Theory versus experiment

Importance of vertical effective stress for reservoir quality in the Skagerrak Formation, Central Graben, North Sea

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