METHOD FOR VIBRATION DAMPING OF A DRILL STRING (VERSIONS), A VIBRATION ABSORBER (VERSIONS) AND A MICRO-DISPLACEMENT DRIVE (VERSIONS) FOR IMPLEMENTING A METHOD OF VIBRATION DAMPING Russian patent published in 2020 - IPC E21B17/10 

FIELD: oil and gas industry; drilling of soil or rocks.

SUBSTANCE: group of inventions relates to drilling of oil and gas wells, namely to devices for vibration damping of drilling equipment and tools. Vibration damping method of drill string includes installation of vibration damper into drilling column through which drilling fluid is pumped. Vibration damper is installed at the level of the surface of the hydrostatic column of drilling fluid in the drill string. Dependent on the drilling string rotation frequency, transmission of obtained power action of drilling fluid pressure to the vibration dampener is performed, by converting pressure force of the drilling fluid by means of the micromoving drive of the penetration member into the rock, note here that, by increasing and decreasing pressure on drive, force of resistance to rotation of drill string is changed by interaction of penetration element with rock of well wall.

EFFECT: technical result consists in providing expansion of functional capabilities, improved operational properties and reliability of vibration absorber.

24 cl, 8 dwg