METHOD FOR PENETRATION INTO A SUBGLACIAL RESERVOIR WITH THE SELECTION OF STERILE SAMPLES AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC E21B25/00 G01N1/00 

FIELD: geological survey.

SUBSTANCE: group of inventions relates to a method for penetration into a subglacial reservoir with the selection of sterile core samples and to a device for the selection of sterile samples. The method for penetration into a subglacial reservoir with the selection of sterile core samples includes drilling a well and pouring into it an environmentally safe liquid that balances the mountain pressure, followed by pumping out part of the volume of the filling liquid to receive water from the subglacial reservoir into the well at a height of 10 to 15 meters, lowering a sealed delivery module with heating elements into the well and stopping it at a distance of 1 to 2 meters to the surface of the subglacial reservoir, descent from a sealed delivery module of a drilling shell with a core collector and sampling of bottom sediments. Additionally, sterile treatment is performed on the inner surface of the delivery module and the equipment placed in it, first with ultraviolet radiation from a quartz or bactericidal lamp, and then with microbicidal gases, particularly formaldehyde vapors. In the lower sealed compartment of the delivery module, according to the commands of the electronic control system, the lower high-pressure throttle valve is first opened, and then the upper high-pressure valve and the pressure is equalized with the surrounding water of the subglacial reservoir, after that the valves are closed and the sealed lid is opened in the bottom part, and after lifting the drilling shell with samples, the sealed lid is closed, while the temperature and pressure of natural conditions at the sampling site are maintained in the lower sealed compartment. Temperature conditions are monitored by an electronic control system, which, when deviating from the set parameters, transmits the appropriate commands to the thermostat, which adjusts the temperature, and the pressure is maintained due to the tightness of the lower compartment.

EFFECT: increasing the efficiency and quality of core sampling, ensuring their sterility and preserve the conditions of the natural environment when rising to the surface.

2 cl, 2 dwg