Dynamic analysis of 3D seismic data of the Hovsan oilfield for identification of the potentially hydrocarbon bearing zones.

№4 (2017)

Akhmedov T.R.

Brief geological-geophysical characteristics of the Hovsan oilfield and Absheron oil-and-gas area are presented in the paper. The heterogeneity of the reservoirs was observed during as the results of the qualitative and quantitative dynamic analysis of seismic data. The methodology of net-pay thickness prediction maps in the perspective areas is described, as well as, the correlation analysis of total and effective (net-pay) thicknesses, porosity, in the exploratory and production well, with different seismic parameters. The attribute analysis of seismic data was conducted in the Paradigm and Integral software. The primary focus is on the amplitude characteristics: instantaneous, average, minimal amplitudes, as well as the energy of reflection, which were measured in different windows, varying with the thickness of formations. The main three reservoir units were considered during this study: KaS-1, KaS-2, and Ka-S3. The net-pay thickness prediction maps for aforementioned units were constructed using the relative impedance and amplitude data. The shale zones in the Miocene seismic units were identified based on the seismic data. On the perspective area the inversion of seismic data was performed using the «Azeri» software, developed with author’s participation. Based on the results, lower Pliocene and Miocene stratigraphical units were identified as the most perspective areas.

Section: Modeling geo objects and geo-processes

Keywords: productive suite (PS), Kirmakinskaya, Podkirmakinskaya and Kalinskaya suites, seismic, facies analysis, neural networks, effective thickness.