Ostalo

Application of Neural Networks in Petroleum Reservoir Lithology and Saturation Prediction¸

Marko Cvetković ; Faculty of Mining, Geology and Petroleum Engineering
Josipa Velić ; Faculty of Mining, Geology and Petroleum Engineering
Tomislav Malvić ; INA-Industrija nafte, d.d., Oil & Gas Exploration and Production, Development Department

Sažetak

The Kloštar oil field is situated in the northern part of the Sava Depression within the Croatian part of the Pannonian Basin. The major petroleum reserves are confi ned to Miocene sandstones that comprise two production units: the Lower Pontian I sandstone series and the Upper Pannonian II sandstone series. We used well logs from two wells through these sandstones as input data in the neural network analysis, and used spontaneous potential and resistivity logs (R16 and R64) as the input in network training. The fi rst analysis included prediction of lithology, which was defined as either sandstone or marl. These two rock types were assigned categorical values of 1 or 0 which were then used in numerical analysis. The neural network was also used to predict hydrocarbon saturation in selected wells. The input dataset was extended to depth and categorical lithology. The prediction results were excellent, because the training and prediction dataset showed little disagreement between the true and predicted values. At present, this study represents the best and most useful application of neural networks in the Croatian part of the Pannonian Basin.

Ključne riječi

Kloštar field; neural network; prediction; sandstone; hydrocarbon saturation; Croatia

Hrčak ID:

39253

URI

https://hrcak.srce.hr/39253

Datum izdavanja:

17.6.2009.

Posjeta: 1.508 *