The core breakthrough of the modern double-tube circulation drilling system lies in the "low-temperature fidelity technology". The hydraulically driven dual-channel water circulation system wraps the drill bit with 3℃ constant-temperature coolant, controlling the frictional heat within 80℃ in hard rock drilling to avoid thermal fission of the core. Its patented torque compensation mechanism counteracts the elastic deformation of the 700-meter drill string, enabling the coring tube to maintain a constant contact pressure of 0.1N in the granite. The revolutionary core capture device adopts shape memory alloy claw springs to complete millimeter-level locking at the moment of core fracture, ensuring that the recovery rate of brittle shale reaches over 95%. The modular design enables the entire system to be disassembled into 12 aircraft cases and transported to the scientific research station on the Qinghai-Tibet Plateau by helicopter.
Such deep earth sampling platforms are driving breakthroughs in multiple fields:
Youdaoplaceholder0 Lithium exploration revolution: Obtaining undisturbed spodumene vein samples in hard rock fault zones
Youdaoplaceholder0 Geothermal field assessment: Permeability analysis of fracture filling in 500 m deep dry hot rock
Youdaoplaceholder0 Paleoclimate study: Drilling continuous ice cores from permafrost to reconstruct climate sequences over ten thousand years
Youdaoplaceholder0 Carbon sequestration monitoring: Obtaining evidence of mineralization reaction in sandstone after CO2 injection
Youdaoplaceholder0 Seismic belt study: Analysis of fault mud friction characteristics for predicting plate stress threshold
Technological innovation endows it with the precision of a "stratum microscope" :
The quantum gyroscope inclinometer corrects the well deviation in real time, with a vertical deviation of less than 0.15° at a depth of 700 meters
The intelligent drilling pressure system automatically switches to the suspended drilling mode when encountering karst caves
The core spectral scanner completes the pre-analysis of mineral composition during the drilling process
The hybrid version uses the temperature difference at the bottom of the hole to generate electricity to drive the sensor network
The maintenance system demonstrates ultimate reliability: The cooling circuit adopts a nano-ceramic coating, with an anti-scaling lifespan of up to 10,000 hours. The quick-change core-taking tube module enables on-site replacement within 8 minutes. When facing the fracture zone, its magnetorheological fluid stabilization system can instantaneously increase the viscosity of the mud. When drilling through flint nodules, the nanoscale diamond composite drill bit grinds the rock mass with a Mohs hardness of 10 at a micro-speed of 0.5rpm.
From the Antarctic ice sheet to the Qinghai-Tibet Plateau, wet core drill 700m continuously reshapes the depth limit of human cognition of the Earth's crust. This scientific probe, which uses fluids as nerves and alloys as tentacles, is extracting Earth's memories from temporal rock layers with micron-level fidelity, proving that the acquisition of deep geological information has entered a non-destructive era.
