Publications

Depth conversion is a part of the interpretation flow using velocity information from seismic and well data. Basically, one depth conversion method uses time and depth data assumes the average velocity can be obtained the trends of velocity from seismic times and well data. Another method simply convert the horizon times to depth using adjusted seismic stacking velocities. The Aquila Field needed better velocity model designed to analyze the uncertainty of the Tuban Carbonate depth marker due to high velocity anomalies from the results of the conversion using the linear trend velocities and the adjust seismic stacking velocity data. The final analysis of depth conversions continued with further NMO velocity correction and combined a method between using the interval velocities and a variogram. The results give several numbers of depth markers to obtain the best depth marker values. The depth conversion method using interval velocity modeling combined with a variogram method shows the best results and the minimum value of horizon depth error. The prediction of a better depth marker can precisely increase the quality of the interpretations for calculating the pertinent value of hydrocarbons for oil and gas field development.