+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Methodology of organic-rich shale lithofacies identification and prediction; a case study from Marcellus Shale in the Appalachian Basin

, : Methodology of organic-rich shale lithofacies identification and prediction; a case study from Marcellus Shale in the Appalachian Basin. Computers & Geosciences 49

The success of shale gas in North America has attracted increased interest in "unconventional" reservoirs. Two critical factors for shale-gas reservoirs are units amenable to hydrologic fracture stimulation and sufficient natural gas content. The effectiveness of hydrologic fracture stimulation is influenced by rock geomechanical properties, which are related to rock mineralogy. The natural gas content in shale reservoirs has a strong relationship with organic matter, which is measured by total organic carbon (TOC). A 3D shale lithofacies model constructed using mineral composition, rock geomechanical properties and TOC content can be applied to optimize the design of horizontal well trajectories and stimulation strategies. Core analysis data, log data and seismic data were used to build a 3D shale lithofacies from core to well and finally to regional scale. Core, advanced and common logs were utilized as inputs to petrophysical analysis, and various pattern recognition methods, such as discriminant analysis, fuzzy logic, neural network and support vector machine. A limited set of eight derived parameters from common logs were determined as critical inputs for pattern recognition methods. Advanced logs, such as pulsed neutron spectroscopy, are used to determine mineral composition and TOC data improve and confirm the quantitative relationship between conventional logs and lithofacies. Seismic data, interpreted sequence stratigraphy and depositional environments were used as constraints to build deterministic and stochastic 3D lithofacies models and to extrapolate lithofacies from well scale to regional scale. Abstract Copyright (2012) Elsevier, B.V.


DOI: 10.1016/j.cageo.2012.07.011

Other references

Wistrand, P., 1959: The effect of carbonic anhydrase inhibitor on intra-ocular pressure with observations on the pharmacology of acetazolamide in the rabbit. Acetazolamide (I) was administered intravenously to rabbits. Plasma concentrations after 1 hour range from about 150 [mu]g/ml (after 100 mg/kg) to about 10 fig/ml (after 10 mg/kg). Ninety percent of (I) was bound to the plasma proteins. The concen...

Canavese, C.; Decostanzi, E.; Bergamo, D.; Sabbioni, E.; Stratta, P., 2008: Rubidium, salami and depression. Depression may induce malnutrition, but, as a paradoxical hypothesis, malnutrition may induce depression. This relationship, of course, depends on how we define malnutrition. Current Knowledge: Rubidium is a trace element strongly linked with dep...

Fischer, C.T., 1977: Historical relations of psychology as an object-science and a subject-science: toward psychology as a human science. Textbooks and other teaching of psychology's history oversimplify to the point of presenting it as the evolution of an exclusively object-science--despite general familiarity with integral extrascientistic practices and assumptions. Represent...

Dietrichson, G.J., 1961: Dysplasia coxae congenita. Reflections on early diagnosis. Tidsskrift for den Norske Laegeforening 81: 981-984

Guitián, J.A.; Sobral, M.; Veiga, T.; Losada, Mía.; Guitián, P.; Guitián, Jé.M., 2017: Differences in pollination success between local and foreign flower color phenotypes: a translocation experiment with iGentiana lutea (Gentianaceae). The adaptive maintenance of flower color variation is frequently attributed to pollinators partly because they preferentially visit certain flower phenotypes. We tested whether <i>Gentiana lutea</i>-which shows a flower color variation...

Anonymous, 2008: Vitamins for cataract prevention. Medical Letter on Drugs and Therapeutics 50(1288): 46-47

Colquhoun, J., 1986: Fluoridation of water. New Zealand Medical Journal 99(802): 382-382

Lake, B.D., 1995: Hirschsprungs disease and related disorders. Whitehead, R Gastrointestinal and oesophageal pathology, Second edition 327-341

Sutherland, S.S.; Ellis, T.M.; Mercy, A.R.; Paton, M.; Middleton, H., 1987: Evaluation of an enzyme-linked immunosorbent assay for the detection of Corynebacterium pseudotuberculosis infection in sheep. Two enzyme-linked immunosorbent assays to measure antibody to the cell wall antigen (C-ELISA) and toxin antigen (T-ELISA) of C. pseudotuberculosis were evaluated on serum from 6 separate groups of sheep. For sheep naturally infected with C. pseudo...

Esmonde, T.; Gamble, W.; Patterson, V., 1995: Neuralgic amyotrophy and infectious mononucleosis: a case report. A 27 year old man developed neuralgic amyotrophy of the right upper limb 5 weeks after an acute febrile illness which was proven serologically to be caused by Ebstein-Barr virus. The weakness developed in a limb that had been used to perform heavy...