FIELD: soil or rock drilling; mining.
SUBSTANCE: invention relates to the drilling of wells and can be used for directional drilling during passage of a reservoir. In particular, a method of drilling a well is disclosed, including: generating, by means of a surface-mounted acoustic vibration transmitter, audio pulses spaced apart from each other by a certain interval in a string of drill pipes located in the well, which has sound reflectors and acoustic impedance, as well as a drill bit at the downhole end; setting, by means of a surface-mounted clock generator, time moments for the acoustic vibration transmitter, at which audio pulses are generated; recording, by means of a downhole clock generator placed at the downhole end of the pipe string, the time of arrival of audio pulses at the downhole end; using a downhole processor to calculate the time of passage of the audio pulses using the recorded time of arrival and without reference to the time of generation from the surface-mounted clock generator, determining the length of the drill string using the calculated time of arrival, adjusting the determined length using the known acoustic impedance of the drill string, determining the position and orientation of the drill bit using the adjusted length and the resulting azimuth angle and the angle of inclination of the drill bit and changing the control parameter of the drill bit using the determined position and orientation of the drill bit and obtaining a selectable well drilling trajectory, which is determined by the downhole processor using reservoir measurement data obtained at the well site. Well drilling system for implementing this method is also disclosed.
EFFECT: technical result is high efficiency of the borehole drilling within a reservoir by improving the quality of the obtained data on the location of the drilling tool in the well.
14 cl, 5 dwg
