Open Conference Systems, Mathematical methods and terminology in geology 2018

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Correction of the seismic attribute sweetness by using porosity-thickness map, Lower Pontian LP reservoir, Sava Depression
Kristina Novak Zelenika, Saša Smoljanović

Last modified: 2018-09-13

Abstract


These is mic attribute of sweetness is often used to define the quality of the hydrocarbon reservoir due to the ability to identify sandstone bodies, which have a stronger reflection compared to the surrounding marls. The quality of deposits canals obe describe by porosity-thickness maps.Coarser material in the center of the channel has higher values ​​of porosity, but also greater thicknesses. By multi playing the set wo variables, depositional channels would be emphasise. The LP reservoirof ​​the A field, locatedinthe Sava Depression, has been analyzed. The Lower Pontian LP reservoir is composed of sandstones, deposited by a regional transport of turbidite currents. The structure of the reservoir is ananticline with two maxima separated with the structural saddle. The LP reservoir was analyzed with a seismic attribute of sweetness and with a porosity-thickness map.Maps showed many similarities, but there were certain differences, especially in the central part of the southernmaximum. According to the well data this part show lack of LP reservoir, and the seismic is of poor quality. Correlation of the mapped parameters is confirmed by correlation coefficients (medium correlation, for the whole analyzed area and strong correlation only for the northern part with thicker sandstones). In the central part of the southern maximum, the correlation between the attributes of sweetness and the porosity-thickness map was not established.


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