Gas-Oil Contact Monitoring at Troll Using High Resolution 4D Analysis and Neural Networks

C040 Gas-oil contact monitoring at Troll using high resolution 4D analysis and neural networks Abstract 1 A new 4D workflow is applied to the Troll West Gas Province datasets to monitor the gas-oil contact movement. It consists in generating attributes of velocity and amplitude changes using enhanced resolution imaging and 4D-friendly differencing. These attributes are used to train a neural network scheme for estimation of gas-saturation changes and quantification of the gas-oil contact movement. The analysis shows coning along the tracks of a number of multilateral wells and identifies undrained volumes for infill drilling. Introduction ALEXANDRE BERTRAND 1 SEAN MCQUAID