Abstract
The main goal of this paper is to characterize a reservoir situated in the southeast of Algeria based on AVO seismic inversion. The seismic inversion model has been built by the iterative method of Aki and Richards’s approximation and it has been correlated with four-existing wells in the studied zone. The correlation rate between the inversion model and logging data is good (varying from 72% to 85%). Reservoir characterization of this field has been given in detail. The lithological description is used to construct a Geomechanical model that is useful for new wells’ drilling decisions. The high correlated results allowed us to have a vision on the horizontal variation of Petrophysical parameters such as density and lithological variation of three facies clay, tight limestone, and porous limestone. Moreover, this classification is used in the best way to determine the interesting zone with higher porosity values, so that the exploration strategy becomes more efficient with minimized uncertainties. Therefore, it is highly recommended to use the constructed model to propose new wells as well-5 in this study.
Highlights
Hydrocarbon demands have considerably increased during the last decades
By calculating the inverse Fourier transform (IFT) of W(f), we find the wavelet given by: W (t ) = IFT W ( f ) (6)
SEISMIC INVERSION RESULTS The inversion is done by iterative method according to a global optimization algorithm
Summary
Hydrocarbon demands have considerably increased during the last decades. We all depend in different ways on these products which are located at depths of several hundreds or thousands of meters in the porous medium of the rocks [1]. The daily hydrocarbons’ extraction decreases their reserves. Exploration activity has been conducted around the world in order to search for new fields. As the demand for energy increases, the gaze must be turned to littleknown complex reservoirs, where exploration and exploitation in the past were expensive and unprofitable. Thanks to the technological advances in this field, the development of unconventional resources has become possible, but it holds a primordial place in the oil industry [1]
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