FIELD: mining engineering.SUBSTANCE: method for investigating wells comprises a first provision stage for providing a drilling tool (1) comprising at least one drill rod (2) and a drill bit assembly (3), a second provision stage for providing a well investigation tool comprising a sensor device (1), a drilling stage for drilling the well (6) with the drilling tool (1) by means of a drilling process (6) by means of well investigation tool to obtain well data (6), and a processing stage for processing the well data (6) with a data device (7) to obtain well condition data. The drilling tool (1) comprising a central flushing channel for feeding the flushing fluid to the drill bit assembly (3) is used, and the well investigation tool is placed in the central flushing channel in such a way that it is possible to flow around the flushing fluid in the central flushing channel for the well investigation tool.EFFECT: providing cooling and protecting the investigation tool during drilling.32 cl, 7 dwg
