@article{Prelat:2015:10.1016/j.marpetgeo.2014.07.018,
author = {Prelat, A and Hogdson, DM and Hall, M and Jackson, CA-L and Tveiten, B},
doi = {10.1016/j.marpetgeo.2014.07.018},
journal = {Marine and Petroleum Geology},
pages = {268--285},
title = {Constraining sub-seismic deep-water stratal elements with electrofacies analysis; a case study from the Upper Cretaceous of the Måløy Slope, offshore Norway},
url = {http://dx.doi.org/10.1016/j.marpetgeo.2014.07.018},
volume = {59},
year = {2015}
}

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TY  - JOUR
AB  - Electrofacies represent rock facies based on wireline-log measurements and allow extrapolation of petrophysical characteristics away from levels that are calibrated to core. This approach has been employed to reduce uncertainty in the sub-seismic depositional elements of the late Cenomanian-Coniacian succession, northern Måløy Slope, offshore Norway. From core logging, eleven distinct sedimentary facies are grouped into four facies associations: FA A-turbidite sandstones, FA B-heterolithic siltstones and sandstones, FA C-debrites and FA D-slide and slump deposits. Each sedimentary facies association is characterised by a distinct combination of petrophysical characteristics, such as porosity, density, gamma-ray, sonic and resistivity. Using a neural network, calibration of electrofacies with sedimentary facies association allows their thickness and stacking pattern to be documented across the Upper Cretaceous stratigraphy. This approach is particularly useful where well log facies associations are poorly constrained due to the variable presence of glauconite, and sandstone units are challenging to distinguish from shale-rich units on a gamma-ray log. Results indicate that the succession of interest is dominated by debris flow, slide, and slump deposits, which are commonly poorly imaged on seismic reflection datasets in the northern North Sea. The methodology presented here represents a step forward in correlation at production and exploration scales of stratigraphic successions with similar burial histories, and in the identification of widespread mass flow deposits present in Upper Cretaceous deep-water systems of the North Sea.
AU  - Prelat,A
AU  - Hogdson,DM
AU  - Hall,M
AU  - Jackson,CA-L
AU  - Tveiten,B
DO  - 10.1016/j.marpetgeo.2014.07.018
EP  - 285
PY  - 2015///
SP  - 268
TI  - Constraining sub-seismic deep-water stratal elements with electrofacies analysis; a case study from the Upper Cretaceous of the Måløy Slope, offshore Norway
T2  - Marine and Petroleum Geology
UR  - http://dx.doi.org/10.1016/j.marpetgeo.2014.07.018
UR  - http://authors.elsevier.com/sd/article/S0264817214002438
VL  - 59
ER  - 

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