FIELD: drilling of soil or rock.
SUBSTANCE: invention relates to a system and method for locating a tool during drilling. Method according to which a well is drilled with a lower drill string assembly (BHA) attached to the drill bit, the location of the bit measurement is determined, receive the measurement data by the bottom drill string sensor, when the drill bit is rotated, the sensor measurement data of the bottom drill string assembly is processed by the model during drilling, in order to track the current location of the bit relative to the location of the measurements, this model takes into account the deformation of the bottom of the drill string assembly.
EFFECT: ensuring continuous tracking of the location of the tool, taking into account the deformation of the bottom of the drill string assembly.
20 cl, 6 dwg
