On the pressure decline analysis for hydraulic fractures in elasto-plastic materials
Materials Science
2022-12-06 v2
Abstract
In this paper the problem of a plane strain hydraulic fracture in elasto-plastic material is analyzed. The analysis is based on Finite Element Method computations of crack propagation and closure to simulate the Mini-Frac calibration test. The basic trends of fracture evolution are identified for both, the propagation and the closure stage in elasto-plastic materials and compared with the results obtained for purely elastic deformation of rock. Pressure decline analysis is conducted to identify the closure stress and leak-off coefficient. The results show that the standard techniques of pressure decline analysis can be adopted also for the case where the fractured material deforms inelastically.
Keywords
Cite
@article{arxiv.2202.06581,
title = {On the pressure decline analysis for hydraulic fractures in elasto-plastic materials},
author = {Michal Wrobel and Panos Papanastasiou and Martin Dutko},
journal= {arXiv preprint arXiv:2202.06581},
year = {2022}
}