The article presents the results of measurements of tidal variations in the building of the Institute of Geology and Petroleum Technology of Kazan Federal University from September 2012 - March 2013, demonstrating the presence of a new type of sources of variations of the gravitational field that need to be considered when conducting high-precision field monitoring for the purposes of oil and gas geology, as well as providing results of the calculation of the parameter K, and showing its change over time
