| Issue |
E3S Web Conf.
Volume 459, 2023
XXXIX Siberian Thermophysical Seminar (STS-39)
|
|
|---|---|---|
| Article Number | 07005 | |
| Number of page(s) | 5 | |
| Section | Thermophysical Problems of Energetics, Energy Efficiency and Energy Saving | |
| DOI | https://doi.org/10.1051/e3sconf/202345907005 | |
| Published online | 04 December 2023 | |
Initiation and propagation of cracks in problems of petrothermal energy
Kutateladze Institute of Thermophysics of the Siberian Branch of the Russian Academy of Science 630090 1, Ac. Lavrentieva ave., Novosibirsk, Russia
* Corresponding author: lapdump@ngs.ru
One of the challenges in using petrothermal energy is creating a fractured reservoir. The depth of formations suitable for exploitation is higher than that of formations for which hydraulic fracturing operations are usually carried out in hydrocarbons production. Therefore, the study of hydraulic fracturing features at great depths can be useful for petrothermal energy. The paper compares the pressures required for the initiation and propagation of a hydraulic fracture for a reservoir located at a depth of 5 kilometers and characterized by a strong contrast in compressive stresses. Fully 3D model is used to simulate fracture propagation and obtain propagation pressure. The initiation pressure is calculated based on the elastic equilibrium equations the solution. It is shown that the initiation pressure may greatly underestimate the pressure required for fracture propagation.
© The Authors, published by EDP Sciences, 2023
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