The optimal design of production in fractured geothermal reservoirs requires knowledge of the resource’s connectivity, therefore making fracture characterization highly important. This study aims to develop methodologies to use resistivity measurements to infer fracture properties in geothermal fields. The resistivity distribution in the field can be estimated by measuring potential differences...

4.1 Methods of fracture stabilization 17 4.2 Nonoperative fracture management 17 4.2.1 Fracture healing without treatment 4.2.2 Conservative treatment of fractures 4.3 Surgical fixation with relative stability 19 4.3.1 Mechanics of techniques of relative stability 4.3.2 Implants 4.3.3 Mechanobiology of indirect or secondary fracture healing 4.4 Surgical fixation with absolute stability 22 4.4.1...

State of the art simulations of enhanced geothermal systems are multi-physics simulations, where different physical properties are often being modeled on different geometries or grids. For example, for the simulation of fluids many prefer finite difference or volume formulations on structured grids, whereas in mechanics finite element formulations on unstructured grids are often preferred. To t...

We describe a theoretical model of the fluid flow, heat transfer and phase change which occurs when liquid is injected into a fracture bounded by a hot, impermeable rock. We first consider the case of a warm host rock, in which there is no boiling of the water. We then develop the model to describe the case in which the host rock temperature is in excess of the boiling temperature and the water...

Control of the grouting pressure within critical for crack propagation in Ordovician limestone can not only ensure grout penetration length, but also prevent risk creating an artificial water channel. Based on fracture mechanics theory, a formula was proposed to calculate mixed mode I-II cracks limestone. The necessary conditions tilted opening, rationality existing empirical value maximum allo...

Fracture mechanics behavior and acoustic emission (AE) characteristics of fractured rock mass are related to underground engineering safety construction, disaster prediction, early warning. In this study, the failure evolution intact fracture (e.g., single fracture, parallel fractures, cross mixed fractures) coal were studied contrasted with each other on basis distribution max amplitude AE. Th...

Rock mechanics experiments show that the magnitude of intermediate principal stress significantly affects rock failure. Since triaxial states (no is zero) are ubiquitous in crust, and polyaxial axial (all three stresses different) general, should have an important effect on hydrothermal mineralisation. For example, extensional veins or dykes vein-hosted gold porphyry deposits may multiple orien...

Composite materials utilizing the sandwich structure are a basic family of materials and possess a highly increasing use in modern industrial applications. Since the traditional approach to structural design and material selection tends to be replaced by the Fracture mechanics approach, it is worth understanding the way that the Fracture mechanics approach is applied. The traditional approach t...

Hydraulic fracture in shale reservoir presents complex network propagation, which has essential difference with traditional plane biwing fracture at forming mechanism. Based on the research results of experiments, field fracturing practice, theory analysis, and numerical simulation, the influence factors and their mechanism of hydraulic fracture extending into network in shale have been systema...