The end of thesis is a privileged moment to thank all the people who encouraged me and supported me to achieve this work. I would like to express my thanks to my supervisors, Ms.Mathilde Adelinet and Ms. Lama Inati. Thank you for your guidance and advice throughout this thesis project. Your efforts have been essential in guiding me and providing me with the knowledge and skills needed to complete this research, as well as to mitigating the difficulties tackled during my project. I sincerely thank you for your support that made these years enjoyable and successful. I would like to thank Mr. François Fournier and Mr. Yves Géraud as well for the time devoted to evaluating this thesis work as reviewers. I wish also to thank Mr. Jérôme Fortin, Mr. Ludovic Bodet, and Ms. Laetitia Le Pourhiet for having accepted to be the examiners of this thesis.I would like to express special thanks for Mr. Fadi Nader for contributing to this work, especially during the field work conducted at the beginning of this thesis project. The knowledge and experience he shared, as well as his comments throughout this project have indeed contributed to making this work successful. I would also like to thank Mr. Cédric Bailly for his contribution to this project, especially in the field work and the petrophysical laboratory measurements.My thanks also go to the Lebanese Petroleum Administration (LPA), for Mr. Wissam Chbat -