Browsing by Author "Bacetti, Abdelmoumen"

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A Practical Seismic Attributes’ Workflow for Natural Fractures’ Characterization of Tight Reservoirs in Algeria
(Springer Nature, 2024) Bacetti, Abdelmoumen; Doghmane, Mohamed Zinelabidine; Eladj, Said
In this paper, a new workflow of geometrical seismic attributes for a structural geological study has been proposed. The small faults with low throw were detected, and the natural fractures’ model has been obtained for tight reservoirs. The fractures model has been correlated with imagery data taken from exploration wells in the studied field. The proposed attributes allowed us to map major faults with a throw less than the seismic resolution, and the curvatures have also been used to map subtler folds and flexures and overlying other formations. The geometrical seismic attributes used are: Curvature, Variance, Chaos, Structural smoothing, Edge enhancement, and Ant tracking. Moreover, the effectiveness of the proposed methodology has been demonstrated through the case study of Ain Amenas tight reservoir. The obtained results have been compared to conventional seismic interpretation results, for which it was demonstrated the existence of small faults that cannot be seen by the old methodology. Therefore, the constructed fracture model has been correlated and matched to the results of imagery interpretation of data taken from wells in the field. Finally, a relationship between fracture density and the attributes has been proposed in order to be considered for reservoir model construction in the production phase. This workflow can be useful in the optimization strategy of exploration costs of hydrocarbon resources of oil and gas national companies. The main novelty of this study is that it provides a practical workflow tool for continuous fracture modeling (CFM) and its successful application to several projects.
A Practical Workflow Using Seismic Attributes to Enhance Sub Seismic Geological Structures and Natural Fractures Correlation
(European Association of Geoscientists & Engineers, 2020) Doghmane, Mohamed Zinelabidine; Bacetti, Abdelmoumen
Since 1970s, seismic attributes has been widely used in every seismic interpretation and reservoir characterization workflow. This practice has generalized due to the rapid development in computers technology (both hardware and software) and the emergence of 3D seismic surveys. In this paper, we describe the workflow of using seismic attributes to visualize hidden structures that cannot be seen on the original 3D seismic. We also studied the existence of a relationship between seismic attributes and natural fracture density. The results are interesting from geological and reservoir modeling aspects as the workflow helped to reveal hidden small faults below seismic resolution and some attributes had a good correlation with natural fracture density. This workflow is useful exploration cost optimization strategy for oil and gas national companies
Stick-Slip vibrations control strategy design for smart rotary drilling systems
(2020) Doghmane, Mohamed Zinelabidine; Bacetti, Abdelmoumen; Kidouche, Madjid
The objective of this paper is to design new strategy using three controllers for rotary drilling systems located in Algerian oil field. Torsional vibration is one of the most challenges facing petroleum drilling technology, it creates the stick- slip phenomenon that decreases Borehole quality, increases drilling cost through additional operations, and reduces penetration rate. The controllers are designed to minimize the vibrations so that maximize penetration rate and decreases drilling operation costs through avoiding unnecessary operations such as side track. The simulations results were so promising; thus a 3D prototype of rotary drilling systems has been realized in laboratory to validate the proposed approaches. Moreover, a graphical interface has been created to facilitate the use of this strategy by drilling field supervisors