Stage Internship In Structural Geology Related To Present-Day Stress Field Measurement H/F

Description offre :

Objectives

The present-day stress field within tectonic plates is primarily controlled by the forces acting at their boundaries. However, the orientation of the measured stress field in intracontinental sedimentary basins often shows locally distinct directions. This suggests that plate boundary forces alone are insufficient to fully explain the observed stress regime. Smaller-scale sources, such as crustal heterogeneities (<500 km) or fault zones (<100 km), represent local forces that can significantly influence the overall stress field. The Algerian Sahara is a region with a high density of wells. Borehole breakout and drilling-induced fracture data indicate that the stress regime does not always reflect the broader regional pattern, and the principal stress directions can vary significantly even over short distances from one well to another. This stress field mapping project aims to improve the prediction of the present-day stress regime in under-studied areas of the Saharan Platform. The outcomes of this project have significant implications in both geomechanics (e.g., optimal wellbore trajectories, borehole stability, fault slip criteria) and structural geology (e.g., identifying subsurface mechanical heterogeneities, explaining lateral and vertical deviations of the local stress field relative to the regional stress orientation).

Main tasks undertaken during the internship

• Compilation of the global stress database (World Stress Map project);

• Interpretation of borehole image logs (BHI) collected from sedimentary basins in southeastern Algeria;

• Mapping of the regional fault network based on available seismic data;

• Statistical analysis of drilling-induced fractures;

• Synthesis of results in the form of a Geographic Information System (GIS) project.

The internship will be supervised by a senior structural geologist.

Software used

Fracture analysis will be performed using FracaFlow™ commercial software and QGIS will be used for mapping

Nombre d'heures par semaine:

35

Profil recherché :

This internship is intended for second-year Master's students or final-year engineering students specializing in Structural Geology and/or Reservoir Fracturing. The ideal candidate should demonstrate a strong interest in integrated work (bridging multiple disciplines), a capacity for team collaboration, and possess excellent analytical, synthesis, and communication skills.

Avantages :

• Restaurant d’entreprise