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Study on automatic lithology identification method while drilling based on acoustic pressure-rock physics parameters mapping. [PDF]

PLoS One
Jiang W, Wang Q, Yan B, Liu Y, Shi S, Fu H.   +5 more
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On wettability of shale rocks

Journal of Colloid and Interface Science, 2016
The low recovery of hydraulic fracturing fluid in unconventional shale reservoirs has been in the centre of attention from both technical and environmental perspectives in the last decade. One explanation for the loss of hydraulic fracturing fluid is fluid uptake by the shale matrix; where capillarity is the dominant process controlling this uptake ...
Roshan, H., Al-Yaseri, Ahmed, Sarmadivaleh, Mohammad, Iglauer, Stefan   +3 more
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Rock physics model for unconventional shales

SEG Technical Program Expanded Abstracts 2013, 2013
Abstract An analytic model was adopted to calculate bedding-normal, dry elastic moduli of rocks enriched with solid organic matter — kerogen. Elastic stiffnesses in the model are functions of solid matrix moduli, total porosity, pore-shape factor, and crack density. Crack density is taken to be an exponential decay function of stress,
Yulia Khadeeva, Lev Vernik
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Rock physics of organic shales

The Leading Edge, 2011
Several publications over the last 20 years have established that black organic shales are generally characterized by strong velocity anisotropy, low velocity in the bedding-normal direction, and relatively low density and porosity (e.g., Vernik and Nur, 1992; Vernik and Liu, 1997).
Lev Vernik, Jadranka Milovac
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Rock Typing in Gas Shales

All Days, 2010
Abstract Conventional methods of rock typing based on porosity-permeability cross-plots do not work in shales due to lack of dynamic range and difficulties involved in the direct measurements of most of the petrophysical parameters.. Here we present a methodology for rock typing in Barnett shale by integrating geological core description
Sagar Kale, Chandra S. Rai, Carl H. Sondergeld   +2 more
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Segmentation of Cracks in Shale Rock

2011
In this paper the use of morphological connected filters are studied for segmenting sheet- and thread-like cracks in images of shale rock. A volume formed from a stack of 2-D X-ray images is processed using 3-D attributes. The shape-preserving property of these filters provides accurate segmentation results while the use of rotation-invariant ...
Erik R. Urbach, Marina Pervukhina, Leanne Bischof   +2 more
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Oil Shale: The Rock That Burns

Journal of Petroleum Technology, 2011
The term “oil shale” refers generally to fine-grained sedimentary rock that contains solid bituminous materials, called kerogen, which can be converted into liquid and gaseous hydrocarbons (petroleum liquids, natural gas liquids, and methane) when the rock is heated in the chemical process of destructive distillation known as pyrolysis.
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Rock physics modelling of shale cementation

SEG Technical Program Expanded Abstracts 2004, 2004
Shales play an important role in fluid flow and wave propagation because of their low permeability and anisotropic microstructure. When overlying hydrocarbon reservoirs, shales can be effective seals. Since shales make up most of the overburden in many of the worlds hydrocarbon bearing reservoirs, quantitative information about the velocity anisotropy ...
Anders Dræge, Morten Jakobsen, Tor Arne Johansen   +2 more
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Adhesion and surface energy of shale rocks

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2017
Abstract Significant work is ongoing within the industry to determine a best practice for maximizing oil recovery from fractured oil-wet shale reservoirs. Rapid decline curves are often observed and water flooding can be largely ineffective because of negative capillary pressure.
Duy Nguyen, Tri Phan, Tzu-Ping Hsu, Jenny Phan   +3 more
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