Lithological Characterization by Simultaneous Seismic Inversion in Algerian South Eastern Field

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.

Application of Noise Attenuation on 2D Shallow Offshore Seismic Reflection Data: A Case Study from the Baltic Sea

“…The most common geophysical method, seismic reflection, studies subsurface structures. Geophysicists are interested in interpreting the travel times of the seismic waves [3,4]. This leads geophysicists to pay special attention to seismic data processing, particularly for the removal of various unwanted signals, because the quality of the subsurface imaging is largely determined by the accuracy of the processed data.…”

3D Geomechanical Model Construction for Wellbore Stability Analysis in Algerian Southeastern Petroleum Field

“…In this framework, the field of study selected has suffered from reservoir damage caused by the use of inappropriate drilling mud density values at the levels of wells 1, 2, 3, and 4. The study region in this research work was in the southeast of Algeria, and seismic inversion and a 3D geomechanical model were employed using seismic and well-logging data [5]. In order to emphasize the various lithologies and characterize the reservoir, the seismic data were first inverted before being exploited [6][7][8].…”