Loading...
Please wait, while we are loading the content...
Similar Documents
Reservoir properties and petrophysical modelling of carbonate sand bodies: outcrop analogue study in an epicontinental basin (Triassic, Germany)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Palermo, Denis Aigner, Thomas Seyfang, Bjoern Nardon, Sergio |
| Copyright Year | 2012 |
| Abstract | This paper represents the second part of an integrated study that is focussed on the development and distribution of reservoir bodies and properties in epeiric carbonate systems. It is based on outcrop analogue data from Triassic ‘layer-cake’ carbonates in the South German Basin, which were deposited along an epicontinental, very gently inclined carbonate ramp. The reservoir facies consists of skeletal and oolitic carbonate grainstones (Fmax 23%, Kmax 700 mD), which are organized in a pronounced hierarchy of stratigraphic cycles. Based on outcrops, cores, gamma ray (GR) logs and thin sections, a high-resolution, geocellular 3D facies model was generated, which covers the area of a Middle East giant gas field (25 × 36 km). The spatial distribution of reservoir properties was systematically investigated on different scales. The lateral distribution of reservoir properties remains in the same order of magnitude for hundreds of metres, within in the same stratigraphic position. However, on a kilometre scale, facies bodies, diagenetic trends and thus reservoir properties show gradual lateral changes. Vertically, in contrast, properties change commonly on a decimetre scale and are largely controlled by stratigraphic cycles. Petrophysical modelling enhanced the understanding of key factors and processes controlling both reservoir quality and quantity. Reservoir heterogeneity remains a significant issue in reservoir modelling and prediction of field performance. Outcrop analogues are ideal for establishing the possible geometries and property distributions at the inter-well scale. Quantitative data on carbonate rock bodies remain scarce (e.g. Handford 1988; Burchette et al. 1990; Grant et al. 1994; Harris & Kowalik 1994; Borgomano et al. 2002; Grammer et al. 2004; Kostic & Aigner 2004; Ruf & Aigner 2004; Rankey et al. 2006; Qi et al. 2007; Aigner et al. 2007; Palermo et al. 2008). Qualitative outcrop studies of geometry (e.g. Burchette et al. 1990; Gawthrope & Gutteridge 1990; Azerêdo 1998) and quantitative petrophysical studies carried out on outcrops at the appropriate scale (e.g. Kittridge et al. 1990; Senger et al. 1991; Eisenberg et al. 1994; Cavallo & Smosna 1997; Jennings 2000; Savary & Ferry 2004; Pranter et al. 2005, 2006) made useful contributions to the available data. Outcrop analogue studies of this nature are important in order to condition subsurface reservoir models to real data and concepts, thus significantly improving field appraisal work and development planning. The present work has resulted from a joint ENI E&P–University Research Consortium on the ‘Geometry of Carbonate Objects’. Within this project, the Triassic Upper Muschelkalk carbonates in the South-German Basin were studied as an analogue to the ‘layer-cake’-type reservoir systems of theMiddle East. The UpperMuschelkalk was deposited on a gently inclined carbonate ramp, filling an epicontinental basin, and therefore represents an analogue to an important type of ‘nonreefal’ skeletal and oolitic carbonate sand reservoirs (e.g. Khuff, Hanifa, and Arab in the Middle East). A series of excellent quarries and natural outcrops in Southern Germany has been used to investigate the geometries within high-energy shoal water deposits along the margin of the Upper Muschelkalk Basin. Close outcrop spacing allows for lateral tracing of beds and mapping of lateral facies transitions. A hundred years of detailed From: Garland, J., Neilson, J. E., Laubach, S. E. & Whidden, K. J. (eds) 2012. Advances in Carbonate Exploration and Reservoir Analysis. Geological Society, London, Special Publications, 370, http://dx.doi.org/10.1144/SP370.6 # The Geological Society of London 2012. Publishing disclaimer: www.geolsoc.org.uk/pub_ethics Geological Society, London, Special Publications published online June 27, 2012 as doi: 10.1144/SP370.6 |
| Starting Page | 111 |
| Ending Page | 138 |
| Page Count | 28 |
| File Format | PDF HTM / HTML |
| DOI | 10.1144/SP370.6 |
| Volume Number | 370 |
| Alternate Webpage(s) | https://uni-tuebingen.de/index.php?eID=tx_securedownloads&file=/fileadmin/Uni_Tuebingen/Fakultaeten/MatNat/Fachbereiche/Geowissenschaften/Arbeitsgruppen/Angewandte_Geowissenschaften/Sedimentgeologie/publications/Palermo_et_al_2012_n.pdf&g=0&hash=a830befaa7119a1034938babcd5f49f63cd84722&p=94472&t=1565796182&u=0 |
| Alternate Webpage(s) | https://doi.org/10.1144/SP370.6 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
