IN SITU ACTIVE TEMPERATURE-PRESERVING CORE SAMPLING DEVICE FOR DEEP ROCK AND TEMPERATURE-PRESERVING CORE SAMPLING METHOD THEREFOR

摘要

An in situ active temperature-preserving core sampling device for deep rock and a temperature-preserving core sampling method therefor, applicable to the technical field of scientific drilling. The core sampling device comprises an in situ core sampling system and an in-situ fidelity shift system; the in situ core sampling system comprises a drive module (1), a core sampling module, and a temperature-preserving module; the in-situ fidelity shift system comprises a fidelity cabin storage module and a mechanical arm (3); the temperature-preserving module comprises a core sampling fidelity cabin (4) and a temperature adjustment control system; the fidelity cabin storage module comprises a storage fidelity cabin (5) and a temperature balance control system; the mechanical arm (3) is mounted in the storage fidelity cabin (5); the core sampling fidelity cabin (4) is connected to the storage fidelity cabin (5) end to end. The in situ core sampling system ensures the temperature of a rock core in the core sampling fidelity cabin to be consistent with the formation in situ temperature during core sampling; the in-situ fidelity shift system ensures the temperature of the rock core to be consistent with the in-situ temperature during the process from core sampling to rock core maintenance, thereby keeping the temperature of the rock core always consistent with the in situ temperature during the process from core sampling to rock core preservation.