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TitrePetrophysical analysis of reservoir characterization for the Devonian-Mississippian lower middle Bakken member in the Viewfield pool, SE Saskatchewan
AuteurHu, K; Chen, Z; Yang, C
SourceGeoConvention 2015, Geoscience new horizons: technical program, poster session abstracts; Canadian Society of Petroleum Geologists, Canadian Society of Exploration Geophysicists, Joint Annual Meeting, Abstracts 2015 p. 1-4
LiensOnline - En ligne
Image
Année2015
Séries alt.Secteur des sciences de la Terre, Contribution externe 20140393
ÉditeurCanadian Society of Pretoleum Geologists
RéunionCSPG GeoConvention 2015; Calgary; CA; mai 4-8, 2015
Documentpublication en série
Lang.anglais
Mediaen ligne; numérique
Référence reliéeCette publication est reliée Hu, K; Chen, Z; Yang, C; (2015). Petrophysical analysis of reservoir characterization for the Devonian-Mississippian lower middle Bakken member in the Viewfield pool, SE Saskatchewan, GeoConvention 2015, Geoscience new horizons: technical program, poster session abstracts, Canadian Society of Petroleum Geologists, Canadian Society of Exploration Geophysicists, Joint Annual Meeting, Abstracts
Formatspdf
ProvinceSaskatchewan
SNRC62E/09; 62E/10; 62E/15; 62E/16
Lat/Long OENS-103.0000 -102.0000 50.0000 49.5000
Sujetspuits; formation de fissures; lithologie; reservoirs; carottes; établissement de modèles; perméabilité; porosité; corrélations stratigraphiques; modèles stratigraphiques; Formation de Bakken ; stratigraphie; combustibles fossiles
ProgrammeÉvaluation des ressources pétrolières pour les schistes, Les géosciences pour les nouvelles sources d'énergie
Résumé(disponible en anglais seulement)
The Viewfield Pool is located between TWP6-11 and R11W2- 6W2 in SE Saskatchewan. Over 2700 horizontal production wells with hydraulic fracturing have been drilled in the field with 174 new completions in 2013 (Kohlruss, et al., 2013; Cronkwright, et al., 2014). The main drilling target is Unit A, the lowest unit of the Middle Bakken Member, which mainly consists of dolomitic fine grained sandstone, dolomitic siltstone, and calcareous siltstone, with small amount of silty wackestone (Christopher, 1961; Kohlruss and Nickel, 2009; Angulo and Buatois, 2011; Staruiala et al., 2013). The Viewfield Bakken play has been described as a resource and/or unconventional play due to its extreme low permeability (Kohlruss and Nickel, 2012). The reservoir evaluation, such as accurate determination of porosity and permeability, has been always challenging because of the complexity of lithology and reservoir heterogeneity.
This study is based on conventional core analysis from about 40 wells and available advanced logging set (e.g. nuclear magnetic resonance - NMR logs) from three wells acquired in the Viewfield pool. By a thorough analysis of conventional core measurements and NMR logs, we developed petrophysical models for unconventional reservoir porosity and permeability estimation using conventional well logs. Comparing computed porosity from well logs derived from the proposed approach with core porosity for the Unit A, the density model gives the best match, density-sonic model provides fair to good result, and single sonic log model gives reasonable porosity estimates. The NMR-based permeability equation provides reasonable permeability estimation, which is comparable with core measurements.
In this paper, we present the petrophysical models and demonstrate the method for porosity and permeability calculations from conventional logs through application examples of the Middle Bakken reservoir in the Viewfield play. Correlations and distributions of basic petrophysical parameters are also discussed for the unconventional play in the Viewfield area.
Résumé(Résumé en langage clair et simple, non publié)
L'étude se fonde sur l'analyse classique des carottes prélevées d'environ 40 puits et sur les ensembles perfectionnés d'enregistrement de trois puits dans le bassin Viewfield, en Saskatchewan. En nous appuyant sur l'analyse minutieuse des mesures classiques des carottes et des enregistrements RMN, nous avons élaboré des modèles pétrophysiques pour l'estimation de la porosité et de la perméabilité de réservoirs non conventionnels et en avons fait la démonstration.
GEOSCAN ID295734