3D MODEL DESİGNED FOR FOOT OF HORİZON I OF MAYKOP İN NAFTALAN FİELD APPLYİNG SEİSMİC ATTRİBUTE ANALYSİS

Abstract

The paper is devoted to design of 3D model of the study area by use of attribute analysis of 3D seismic data applied to study the geology of Naftalan oil field in more detail. The field is located in Naftalan-North Naftalan area of Ganja Oil and Gas Province, Yevlakh-Aghjabadi depression. The paper expounds the data on Naftalan field considered an ancient brachianticline type of field in Azerbaijan. The history of study of the field using geological and geophysical techniques has been briefly given. Geological evaluation of the cube derived by processing of 3D seismic data acquired in Naftalan area in 2012 made it possible to outline a confidently traced interval reflecting the foot of Horizon I of Maykop. Through selection of areas featured by variation of wavefield characteristics, we have calculated several attributes in this interval and analyzed the acquired results gaining more accurate seismic data and confident tracing of seismic horizons. To avoid repetition, some poorly informative attributes or attributes providing similar results have not been applied in further studies. Our study aims to define attributes (RMS amplitude (Root mean square), Variance/Edge method, Relative Acoustic Impedance) that are more effective for outlining disjunctive dislocations of various amplitude and can be applied for 3D model design of the geology of study area. Processing results of all 3D data have been given in form of cubes of seismic attributes. Further analysis of these attribute cubes enables us to study the geological setting of the foot of Horizon I of Maykop and select the most effective attributes. As a result, the 3D model of the study area for seismic horizon reflecting the foot of Horizon I of Maykop has been designed. Keywords: attribute analysis, 3D seismic survey, Naftalan, seismic horizon, Maykop deposits, dislocations.