Method of installing a modular underground water filter in a drilling hole and the underground water filter module

Abstract

The subject of the application is a method for installing a modular underground water filter in a drilling borehole and an underground water filter module. Casing pipe sections (4) are filled with water at least horizontally, and the filter modules (10) contain removable buoyancy elements with adjustable displacement, which are connected mechanically using mechanical connectors and pneumatically using pneumatic connectors. The final buoyancy element is connected to a winch and a compressor on the surface. The compressor regulates the air pressure in the buoyancy elements, creating a buoyancy force that balances or reduces the weight of the underground water filter modules (10) and the extraction pipes (6), so as to minimize resistance to movement during their insertion into the casing pipes (4) in the drilling. After installation is complete, the buoyancy elements are removed.