Natural Gas Exploration Optimization Based on Tortuosity Reservoir Modeling in Algerian Petroleum Field

The main objective of this study is to provide a reservoir model that can guide geologists and geophysicists working on tight gas reservoirs in Algeria towards achieving selective drilling, ensuring both reservoir productivity and cost-effectiveness. The proposed approach aims to construct a more accurate non-conventional reservoir model for a fully controlled field, based on the extraction of tortuosity as a function of seismic and logging data. This enables the generation of a pore geometry model, initially near the wells and subsequently at the reservoir scale. Moreover, several deterministic seismic attributes have been derived from the seismic cube. The proposed equations linking the Petrophysical parameters have been mathematically demonstrated and tested. The results obtained are highly promising for unconventional shale gas reservoirs. The application of this novel technique in characterizing unconventional reservoirs facilitates the precise identification of potential net pay zones with great accuracy, optimizing exploration efforts and daily upstream production in mature reservoirs. It also aids in the strategic placement of new wells, determining their density and configurations. Furthermore, it offers a more precise and comprehensive reservoir characterization, improved reservoir geometry mapping, and a significant reduction in dry wells, thereby optimizing costs. Consequently, this developed model contributes to generating economic benefits by enhancing secondary recovery in mature fields, extending reservoir exploitation life by minimizing exploration uncertainties in gas reservoirs.