Fracture Opening Simulation Device for Hard Brittle Mudstone
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Solution Overview
Problem
Existing fracture opening simulation devices for hard brittle mudstone and shale lack the ability to simulate the variable pressure conditions found in natural environments, limiting their effectiveness in studying the fracture behavior of these rocks.
Innovation Solution
A fracture opening simulation device featuring a variable structure storage container, connected with pressure simulation push blocks and a drilling fluid pressure chamber, allowing for adjustable pressure simulation on the core column to mimic natural environment conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional fixed-structure test vessel is used, then the device structure is simple, but it cannot simulate variable pressure conditions of the natural environment
Solution Approach 1:
The test vessel employs a dynamic pressure simulation system where movable pressure simulation push blocks can adjust the confining pressure on the core column. The system transitions from a static fixed-structure vessel to a dynamic system that can replicate varying pressure conditions found in natural environments at different depths, enabling accurate simulation of fracture opening behavior under realistic stress states.
2Measurement precision
If variable pressure simulation is implemented, then the fracture opening simulation accuracy is improved, but the device complexity increases
Solution Approach 1:
The pressure simulation system is segmented into independent components: movable pressure simulation push blocks, guide rods for positioning, and separate pressure control mechanisms. This segmentation allows each component to perform its specific function (applying pressure, guiding movement, controlling force) while maintaining overall system manageability and enabling precise control over the confining pressure applied to the core column during fracture opening testing.
3Reliability
If the test vessel cannot simulate natural environment pressure, then the device is simple to operate, but it cannot accurately study fracture laws
Solution Approach 1:
The system incorporates pressure gauges that provide real-time feedback on the confining pressure applied to the core column. This feedback mechanism allows operators to monitor and adjust the pressure simulation to match natural environment conditions, ensuring accurate fracture opening simulation while maintaining operational control through visible pressure indicators and adjustable push block positions.
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
The device enables more accurate simulation of fracture opening in hard brittle mudstone and shale by replicating the confining pressure and environmental conditions found at different depths, facilitating better understanding and application in engineering practices.
Implementation Method 1
the pressure on the inner core column of the container can be exerted through the change of the container structure to simulate the formation confining pressure factor of the core column in the natural environment
Implementation Method 2
the test fluid is filled inside the experimental vessel, and the fluid is applied with varying hydraulic pressure
Data Source
AI summary
The invention provides a fracture opening simulation device for hard brittle mudstone and shale with organic matter, it includes a simulated support, the lower part of the simulated support is connected with a storage bucket bottom block plate through a screw, the middle of the simulated support is provided with a support socket with a circular structure, the upper surface of the storage bucket bottom block plate is provided with a circular convex structure of a block plate boss, the block plate boss is closely inserted in the support socket, the upper surface of the simulated support is fixed connected with a core column storage barrel.