Compression Behavior of Canadian Oil Sands

Delage, Pierre; Doan, Dinh Hong; Nauroy, J.F.; Tang, Anh Minh

doi:10.1061/(asce)gt.1943-5606.0000808

Cited by 6 publications

(2 citation statements)

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“…; Zheng and Tannant ); or (c) the production challenges related to steam‐assisted gravity drainage during tertiary recovery in deep oil sands (Agar, Morgenstern and Scott ; Delage et al . ).…”

Section: Introductionmentioning

confidence: 97%

“…Karimpour and Lade 2010;Vilhar, Jovičić and Coop 2013;Ghafghazi, Shuttle and DeJong 2014). In the oil industry, these processes are very important since they are associated with the production and migration of fines and connected to: (a) the onset of adverse hydrodynamic conditions resulting in low production yields (Chuhan et al 2002); (b) the unsuitable performance of proppant materials (Reinicke et al 2010;Zheng and Tannant 2016); or (c) the production challenges related to steam-assisted gravity drainage during tertiary recovery in deep oil sands (Agar, Morgenstern and Scott 1987;Delage et al 2013).…”

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confidence: 99%

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Acoustic emission processes occurring during high‐pressure sand compaction

Muñoz‐Ibáñez

Delgado‐Martín

Grande‐García

2018

Geophysical Prospecting

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Granular materials submitted to uniaxial compression undergo pore space reduction due to mechanisms such as particle rearrangement and grain crushing. These changes in the internal structure of the material release energy in the form of elastic waves that can be detected by sensors sensitive to acoustic emission. In this study, Acoustic emission monitoring with a wavelet‐based signal processing technique is used to identify the various mechanisms occurring during high‐pressure sand compaction. Particle movement, grain failure, friction between grains and the surface of the compression cell and intergranular friction are studied. Acoustic emission data recorded during these simplified tests are used to characterize each phenomenon. Wavelet transform analyses allow the identification of useful features, making possible frequency discrimination among sliding, rolling, friction and grain fragmentation processes. For instance, we observe that at low stress, grain flow is characterized by the lowest centroid and peak frequencies, while at greater stresses, intergranular friction and grain fragmentation have the higher values. In the tests performed, the stress–strain evolution and final condition of the tested sand are broadly consistent, irrespective of the condition employed: continuous, stepwise or even variable loading rate or temperature. However, Acoustic emission data manifest much more complex behaviour (including thermal, load‐rate dependency and delayed fragmentation phenomena) than that suggested by stress–strain relationships. At low stress levels, grain flow (sliding/rolling) is a relevant strain‐accommodation mechanism, but so is crushing due to the effect of concentrated forces at the grain contact level. At high stresses, when crushing is generalized, intergranular friction is also a relevant phenomenon due to the increase in the coordination number produced by previous fragmentation.

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Section: Introductionmentioning

confidence: 97%