Hydraulic Fracture Networks for In-Situ Mining and Contaminant Containment
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Solution Overview
Problem
Mining operations face challenges such as soil, water, and air contamination, biodiversity loss, health and safety risks, and limited resource availability, which existing methods fail to adequately address.
Innovation Solution
Employing hydraulic fractures to form artificial aquitards, inject proppants, cycle solutions through fractures, and use energetic materials to fragment rock, thereby enhancing in-situ mining, stabilizing sites, and preventing contaminant migration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional mining methods are used to extract minerals, then resource extraction is achieved, but environmental contamination and biodiversity loss occur
Solution Approach 1:
The patent extracts the harmful elements (contaminants, waste materials) from the mining process by using hydraulic fractures to create isolated zones within the ore body. These fractures allow selective removal of valuable minerals while leaving contaminants in place or directing them to controlled disposal areas, thereby separating the extraction function from the harmful byproducts.
Solution Approach 2:
The patent introduces hydraulic fractures as an intermediary mechanism between the mining operation and the environment. These fractures act as controlled pathways that mediate the extraction process, allowing minerals to be accessed while preventing uncontrolled contamination spread. The fractures serve as a buffer zone that manages the interaction between extraction activities and environmental protection.
2Productivity
If conventional mining techniques are employed, then minerals are accessed, but health and safety risks to personnel increase
Solution Approach 1:
The patent replaces traditional mechanical mining methods (blasting, heavy equipment operation) with hydraulic fracture technology. This substitution reduces direct human exposure to hazardous conditions such as explosions, heavy machinery operations, and unstable rock formations, thereby improving health and safety while maintaining mineral access capability.
3Productivity
If extensive mining operations are conducted, then resource production increases, but the resources become more difficult to access over time
Solution Approach 1:
The patent transitions from surface-level or linear access methods to three-dimensional subsurface fracture networks. By creating hydraulic fractures in multiple directions and planes within the ore body, the system accesses minerals from multiple dimensions simultaneously, maintaining ease of operation even as deposits are depleted and require deeper or more complex access routes.
4Ease of operation
If hydraulic fractures are created for in-situ mining, then access to minerals is improved, but control over contaminant migration becomes challenging
Solution Approach 1:
The patent applies different properties to different regions created by hydraulic fractures. Certain fracture zones are designed with specific permeability characteristics, proppant placements, or sealing materials to control fluid flow directions. This local differentiation allows minerals to be accessed through high-permeability pathways while contaminants are redirected or contained in low-permeability zones, simultaneously achieving easy access and contaminant control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances mining efficiency, reduces environmental impact, and optimizes resource extraction by improving access, stability, and containment of contaminants.
Implementation Method 1
forming one or more hydraulic fractures within an ore body, injecting a proppant material into the one or more hydraulic fractures, and cycling a solution through the one or more hydraulic fractures
Implementation Method 2
injecting a proppant material into the one or more hydraulic fractures
Implementation Method 3
cycling a solution through the one or more hydraulic fractures, or one or more wellbores, to perform in-situ mining
Implementation Method 4
use energetic materials to fragment rock
Implementation Method 5
filling the one or more hydraulic fractures with an impermeable material, thereby forming an artificial aquitard
Data Source
AI summary
Methods for augmenting mining operations with hydraulic fractures. The methods may comprise forming one or more hydraulic fractures near an ore body, which may be filled with an impermeable material, thereby forming an artificial aquitard or a barrier to contaminant migration. The methods may also comprise forming one or more hydraulic fractures within an ore body, injecting a proppant material into the fractures, and cycling a solution through the fractures to perform in-situ mining, or cycling a working fluid through the fractures to provide a mode of heat exchange. The methods may further comprise forming one or more hydraulic fractures at a site of interest to locally influence stress fields in order to prepare the site for material extraction, or disposing within the fractures an energetic material, and detonating the energetic material to extend a single fracture, to form multiple fractures, or to highly fragment rock.