Deep Rock Thermal-Insulation Coring Device
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Solution Overview
Problem
Current technologies lack an effective in-situ active thermal-insulation coring method for deep rock formations, leading to adverse effects in exploring deep underground environments and researching deep rock mass mechanics behavior.
Innovation Solution
A deep rock in-situ active thermal-insulation coring device and method, comprising an in-situ coring system with a thermal insulation module and a truth-preserving moving system, which includes a coring truth-preserving chamber and a storage truth-preserving chamber with integrated temperature regulation and balance control systems, ensuring the rock core's temperature remains consistent with its formation temperature from extraction to storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If existing thermal insulation technology is applied to deep rock coring, then thermal insulation capability is improved, but the technology cannot maintain formation in-situ temperature because it was designed for submarine sediment (cold preservation) rather than hot rock cores
Solution Approach 1:
The patent inverts the traditional thermal insulation approach by switching from cold preservation (submarine sediment) to hot preservation (deep rock). The truth-preserving chamber is designed to maintain high formation temperatures rather than prevent cooling, reversing the fundamental thermal management strategy to match the specific needs of deep rock coring.
Solution Approach 2:
The system changes the temperature parameter control from passive cooling to active heating/maintenance. The temperature regulation system adjusts thermal parameters to keep the rock core at its formation temperature, transforming the thermal management approach from prevention of heat gain to prevention of heat loss.
2Temperature
If passive thermal insulation is used for rock core preservation, then device complexity is reduced, but the rock core temperature cannot be actively maintained consistent with formation temperature
Solution Approach 1:
The patent implements a feedback control system where temperature sensors continuously monitor the rock core temperature and the truth-preserving chamber environment. This feedback information is used by the temperature regulation system to adjust heating elements, ensuring the rock core temperature remains consistent with formation temperature through closed-loop control.
Solution Approach 2:
The system replaces passive mechanical insulation with an active thermal control system that uses electrical heating elements and electronic temperature regulation. This substitution allows precise temperature maintenance but increases system complexity compared to simple passive insulation.
3Productivity
If the rock core is extracted and transported to surface storage, then productivity is improved, but the rock core temperature changes from formation temperature due to thermal loss
Solution Approach 1:
The truth-preserving chamber acts as an intermediary between the coring operation and surface storage. It provides a thermally controlled transition environment that maintains formation temperature during the extraction and transfer process, preventing thermal loss while enabling continuous productivity.
Solution Approach 2:
The system performs preliminary thermal protection by pre-heating or pre-conditioning the truth-preserving chamber to formation temperature before the rock core enters. This preliminary action ensures immediate temperature compatibility and prevents thermal shock or heat loss during the critical transfer phase.
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 solution enables real-time temperature monitoring and maintenance of rock cores during extraction and storage, ensuring the rock core's temperature remains consistent with its in-situ temperature, facilitating accurate research and storage of deep rock samples.
Implementation Method 1
the temperature regulation control system monitors the formation in-situ temperature and regulates the temperature of the rock core in the coring truth-preserving chamber to be consistent with the formation in-situ temperature
Implementation Method 2
the temperature balance control system regulates an internal temperature of the storage truth-preserving chamber to be consistent with an internal temperature of the coring truth-preserving chamber
Implementation Method 3
thermal insulation module comprises a coring truth-preserving chamber
Data Source
AI summary
The present disclosure relates to the field of scientific drilling technologies, and provides a deep rock in-situ active thermal-insulation coring device and thermal-insulation coring method thereof. The coring device comprises an in-situ coring system and an in-situ truth-preserving moving system, the in-situ coring system comprises a driving module, a coring module and a thermal insulation module, and the in-situ truth-preserving moving system comprises a truth-preserving chamber storage module and a mechanical arm; the thermal insulation module comprises a coring truth-preserving chamber and a temperature regulation control system, the truth-preserving chamber storage module comprises a storage truth-preserving chamber and a temperature balance control system, the mechanical arm is mounted in the storage truth-preserving chamber, and the coring truth-preserving chamber and the storage truth-preserving chamber are mutually butted.