Pneumatic Sand Extraction Conduit for Deep Silica Mining
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Solution Overview
Problem
Conventional sand mining techniques for high-purity silica sand from deep underground sandstone formations in water reservoirs are costly and environmentally hazardous due to the need for extensive excavation and equipment usage, especially when the formations are located at significant depths.
Innovation Solution
An apparatus comprising a conduit with a gas injection line is inserted into a well to create a low-pressure area near the sandstone formation, drawing unconsolidated sand to the surface as a slurry, reducing the need for extensive excavation and minimizing environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional open-pit mining techniques are used to extract sand from deep underground sandstone formations, then sand can be recovered for various applications, but extensive excavation and equipment usage are required, leading to high costs and environmental hazards
Solution Approach 1:
The patent applies pneumatic principles by injecting compressed air into the sandstone formation through a wellbore to fluidize the sand and transport it to the surface. This eliminates the need for extensive surface excavation and heavy equipment, thereby reducing environmental impact while maintaining productivity.
Solution Approach 2:
The invention replaces conventional mechanical excavation systems (blasting, digging, hauling equipment) with a pneumatic injection system. Compressed air serves as the substituting mechanism to fracture and transport sand, eliminating the harmful mechanical disruption to the surface environment.
2Quantity of substance
If conventional mining methods are used for deep underground sand formations, then sand can be extracted, but the cost increases significantly due to extensive excavation and equipment usage
Solution Approach 1:
By using compressed air injection through a relatively simple wellbore system, the patent avoids the need for expensive heavy equipment, blasting operations, and large-scale excavation machinery. This pneumatic approach significantly reduces capital and operational costs while recovering substantial quantities of sand.
Solution Approach 2:
The invention extracts sand directly from deep underground formations through a minimally invasive wellbore, taking out only the desired sand material without the need to remove and process large volumes of overburden rock that would be required in conventional open-pit mining.
3Length of stationary object
If deep underground sandstone formations are accessed by removing top layers, then sand can be reached, but the process becomes prohibitively expensive and environmentally dangerous
Solution Approach 1:
The patent uses vertical wellbores to access deep underground formations without removing surface layers. Compressed air is injected through the wellbore to transport sand to the surface, eliminating the environmental hazards associated with removing and managing large volumes of overburden material.
Solution Approach 2:
Instead of accessing deep sand formations through horizontal excavation (removing top layers), the invention transitions to a vertical dimension by drilling down through the surface and injecting air upward through the formation. This dimensional change allows deep access without surface disruption.
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
This method allows for efficient extraction of high-purity silica sand from deep underground formations with reduced environmental impact and lower costs by utilizing a gas injection system to draw sand to the surface through a conduit, overcoming the challenges of deep burial and environmental hazards associated with conventional mining.
Implementation Method 1
A gas injection line extends into the conduit near the lower end to generate an area of low pressure to draw in unconsolidated sand
Data Source
AI summary
An apparatus and method for extracting sand from an underground sandstone formation. The apparatus comprising: a conduit having an upper end and a lower end to engage a sandstone formation, a gas injection line to inject gas at an injection point, wherein the gas injected at the injection point generates a low pressure region at the lower end to draw a sand slurry from the sandstone formation, and a collection port proximate to the upper end of the conduit wherein the sand slurry in the conduit is to be removed. The method comprising: lowering a pipe and air injection line into a sandstone formation, injecting air into the pipe to create a low pressure region at a lower end of the pipe to draw a sand slurry from the formation, and collecting the sand slurry at a collection port.