Research on the Direction Determination of the Drill Bit Based on the Beamforming Algorithm under the Line Array

Abstract

The problem of collision prevention and obstacle bypass between wells often occurs with the application of cluster well technology. In order to obtain the drilling direction of the drill bit in real time, it is avoided that the operation safety of offshore cluster wells is affected by the excessive deviation between the drilling direction and the preset direction. Based on the beamforming algorithm, this paper proposes a theoretical model of direction determination of the drill bit by using a line array sensor. The model collects the vibration signal of the drill bit into the formation through a line array formed by multiple acceleration sensors. Obtain the directivity function values at different angles through signal processing algorithms such as beamforming to estimate the direction of the drill bit. This paper designs and carries out a simulation verification test The results show that the bit direction determination model can effectively predict the bit direction and improve the safety of offshore cluster well operations.