# Development of a fracture capture simulator to quantify the instability evolution in porous medium

**Authors:** Ramesh Kannan Kandasami, Charalampos Konstantinou, Giovanna Biscontin  
**arXiv:** [2304.00207](https://arxiv.org/abs/2304.00207)  
**Date:** 2023-04-01  
**Summary page:** https://www.summarizepaper.com/en/arxiv-id/2304.00207v1/

## Key points

- Understanding and controlling fracture propagation is a complex engineering problem in industries such as oil and gas extraction, groundwater hydrology, and geothermal energy applications.
- A novel testing technique has been developed to simulate ground conditions in the laboratory and study instability characteristics of geo-materials.
- The apparatus allows for pressure profiles and progression of fractures to be recorded simultaneously during fluid injection into specimens subjected to different boundary stresses.
- The data obtained from analyzing fracture propagation provides information on the evolution of fracture morphology and expansion velocity during the injection event.
- This new testing technique offers valuable insights into understanding fracture propagation behavior in geological porous media with high leak-off potential.
- By providing accurate predictions of fracture orientation under non-homogeneous and anisotropic conditions, this research program can help improve control over fracturing processes in various industries such as oil and gas extraction or geothermal energy production.

## Summary

Understanding and controlling fracture propagation is a complex engineering problem, particularly in industries such as oil and gas extraction, groundwater hydrology, and geothermal energy applications. The challenge becomes even greater when the medium is non-homogeneous and anisotropic, making it difficult to predict fracture orientation while also possessing a non-linear material response. To address these challenges, a novel testing technique has been developed to simulate ground conditions in the laboratory and study instability characteristics of geo-materials. This research program has designed and developed bespoke apparatus capable of applying true anisotropic boundary stresses, injecting fluid at a predefined flow rate and viscosity while also imaging the instability/fracture propagation in porous media such as sand and weak rock. The apparatus allows for pressure profiles and progression of fractures to be recorded simultaneously during fluid injection into specimens subjected to different boundary stresses. The data obtained from analyzing fracture propagation provides information on the evolution of fracture morphology and expansion velocity during the injection event. This new testing technique offers valuable insights into understanding fracture propagation behavior in geological porous media with high leak-off potential. By providing accurate predictions of fracture orientation under non-homogeneous and anisotropic conditions, this research program can help improve control over fracturing processes in various industries such as oil and gas extraction or geothermal energy production. Overall, this innovative approach represents a significant step forward in our ability to understand and control fracture propagation behavior in challenging environments.