Phd Project: Non-Periodic Homogenization Of Multi-Scale Fractured Media

10 Jul 2023

Job Information

Organisation/Company

RING, GeoRessources,Université de Lorraine - GeoRessources

Research Field

Geosciences » Geology

Researcher Profile

First Stage Researcher (R1)

Country

France

Application Deadline

30 Sep 2023 - 23:59 (Europe/Paris)

Type of Contract

Temporary

Job Status

Full-time

Is the job funded through the EU Research Framework Programme?

Not funded by an EU programme

Is the Job related to staff position within a Research Infrastructure?

No

Offer Description

Starting date : October 2023 or later

Description: Tectonic processes and the industrial exploitation of the subsurface induce brittle deformations in the earth crust, leading to fractures at all scales. These fractures are organized in networks which are basically characterized by their density, connectivity and distribution of aperture, length and orientation. Determining these parameters are essential for predicting the hydrogeological behavior of reservoirs or understanding the fatigue of soils and engineering structures. However, direct measurements of fracture parameters are rarely available. Apart from outcrops, cores and borehole images, fractured rocks are seen in an effective way through mechanical properties derived from mechanical tests or seismic wave data.The aim of the PhD project is to improve our understanding of the interaction between seismic waves and fractures. Geological observations have evidenced that a power law is appropriate to describe the density of a fracture set as a function of fracture size (e.g., Bonnet et al., 2001). Nevertheless, for either theoretical or computational reasons, studies on seismic wave propagation in fractured media have been restricted to a short range of sizes so far. To overcome this limitation, the present project will build on recent progresses in non-periodic homogenization (e.g., Capdeville et al, 2020) to compute effective properties of fractures following realistic power law distributions. The numerical methodology will be tested and validated against laboratory experiments on core samples.

References: Bonnet, E., O. Bour, N. E. Odling, P. Davy, I. Main, P. Cowie, and B. Berkowitz (2001). Scaling of fracture systems in geologic media, Rev. Geophys., 39, 347–383. Capdeville, Y., P. Cupillard, and S. Singh (2020). An introduction to the two-scale homogenization method for seismology, Adv. Geophys, 61, 217–306.

Requirements

Research Field

Geosciences » Geology

Education Level

Master Degree or equivalent

Research Field

Geosciences » Other

Education Level

Master Degree or equivalent

Skills/Qualifications

Candidates should hold a MSc in quantitative Earth Sciences, Geophysics or Physics, Computer Science, Geostatistics, Porous Media, Applied Mathematics, or related fields. They are passionate about science and have solid scientific writing skills. An experience in computer programming and a strong command of English language are required. French language is preferable, but not necessary.

Languages

ENGLISH

Level

Excellent

Languages

FRENCH

Additional Information

Website for additional job details

https: // www. ring-team.org

Work Location(s)

Number of offers available

1

Company/Institute

Research for Integrative Numerical Geology

Country

France

City

VANDOEUVRE LES NANCY

Postal Code

54500

Street

2 RUE DU DOYEN ROUBAULT

Geofield

Where to apply

E-mail

[email protected]

Contact

City

Vandoeuvre-les-Nancy

Website

https:// georessources.univ-lorraine.fr/fr

Street

Université de Lorraine - Faculté des sciences

E-Mail

[email protected]

STATUS: EXPIRED