High-temperature High-pressure Simulator for Deep In-situ Coring Calibration
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Solution Overview
Problem
Current technologies lack the capability to simulate the high-temperature and high-pressure deep in-situ environment necessary for calibrating and verifying deep in-situ coring systems before on-site drilling, particularly in China where energy resources are buried at great depths.
Innovation Solution
A high-temperature and high-pressure simulator with a high-fidelity sample chamber and coring drill system that replicates the deep in-situ environment, incorporating a piston-driven rock sample chamber, multi-section coring drill chamber, and various sensors to simulate in-situ pressure, temperature, and pore pressure, allowing for controlled and prolonged testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high-temperature and high-pressure simulator is designed to simulate deep in-situ environment, then the reliability of deep in-situ coring system calibration is improved, but the device complexity increases
Solution Approach 1:
The simulator is divided into multiple independent functional modules: high-temperature high-pressure chamber, coring drill system, lifting system, sealing system, and control system. Each module can be independently designed, assembled, and maintained, which manages the overall device complexity while achieving reliable deep in-situ environment simulation.
Solution Approach 2:
The coring drill chamber is nested within the high-fidelity sample chamber, and the coring drill is nested within the coring drill chamber. This nested structure allows multiple functions to be integrated in a compact arrangement, improving reliability through systematic integration while controlling device complexity through space-efficient design.
2Measurement precision
If multiple sealing structures are implemented to maintain high-temperature and high-pressure environment, then the measurement precision of in-situ parameters is improved, but the device complexity increases
Solution Approach 1:
Different sealing structures are applied at different locations based on specific requirements: C-shaped clips with sealing rings at chamber connections, packing glands at moving penetrations, and thread seals at threaded joints. This localized application of appropriate sealing methods ensures measurement precision while avoiding unnecessary complexity throughout the entire device.
Solution Approach 2:
The sealing structures are pre-assembled and pre-tested before final installation in the simulator. This preliminary preparation ensures proper sealing performance for accurate measurement while simplifying the overall assembly process and reducing on-site complexity.
3Adaptability or versatility
If a multi-section coring drill chamber with lift cylinder is used to simulate coring process, then the adaptability of simulator is improved, but the device complexity increases
Solution Approach 1:
The coring drill system incorporates a lift cylinder that enables dynamic vertical movement of the coring drill, simulating the actual coring process. The multi-section coring drill chamber can be adjusted to accommodate different coring depths and configurations. This dynamic design improves adaptability while the modular structure helps manage device complexity.
Solution Approach 2:
The coring drill system is designed to perform multiple functions: drilling, lifting, and simulating various coring conditions. The lift cylinder serves both lifting the coring drill and applying controlled forces during simulation. This multi-functionality improves adaptability while reducing the need for separate dedicated components, thereby controlling device complexity.
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
Enables effective simulation and calibration of deep in-situ coring systems by replicating the deep rock environment, facilitating the exploration and study of deep rock mechanics, thereby enhancing the reliability of deep drilling operations.
Implementation Method 1
A piston rod of the bottom cylinder extends into the high-fidelity sample chamber, and an upper end of the piston rod is provided with a rock sample seat
Implementation Method 2
A sealing ring is provided between the lower end of the upper end cap and the side surface of the step
Implementation Method 3
The upper end cap is clamped with the upper end of the lift cylinder through a C-shaped clip
Implementation Method 4
The upper end of the coring drill is provided with an expansion part. An upper end of the expansion part is provided with a stepped connection piece
Data Source
AI summary
A high-temperature and high-pressure simulator for a deep in-situ environment is provided. The simulator includes a high-fidelity sample chamber, where a lower end of the high-fidelity sample chamber is provided with a bottom cylinder. A lower end of the bottom cylinder is provided on a base. A piston rod of the bottom cylinder extends into the high-fidelity sample chamber, and an upper end of the piston rod is provided with a rock sample seat. An upper end of the high-fidelity sample chamber is provided with a rock sample cap. The top of the high-fidelity sample chamber is sealed by an end cap of the high-fidelity sample chamber. An upper end of the end cap of the high-fidelity sample chamber is provided with a multi-section coring drill chamber. The uppermost section of the coring drill chamber is connected to a lift cylinder.