METHOD OF DETERMINATION OF SET OF ANGULAR PARAMETERS OF SPATIAL ORIENTATION OF DRILLING TOOLS Russian patent published in 2017 - IPC E21B47/22 

FIELD: mining.

SUBSTANCE: in housing of the well device a three-axes unit accelerometer/magnetometer is installed, using it the projections g_x, g_y, g_z of known vector of gravity force acceleration is installed, the projections m_x, m_y, m_z of full vector of geomagnetical field intensity are measured, they are used to determine azimuth α, zenithal θ and viewing ϕ angles. Wherein a priori determined numerical values of small angular parameters of deviation of sensor sensitivity axes are used: χ_A, δX_A, δY_A, σ1_A, σ2_A for three-axes accelerometer and χ_F, γ_F, δX_F, δY_F, σ1_F, σ2_F for three-axes magnetometer.

EFFECT: reduced error of measurements of directional systems due to consideration of small angular parameters of deviation of the sensitivity axes of three-component ferroprobe and accelerometer sensors of the directional systems from the orthogonal axes during the measurement results processing.

2 dwg, 2 tbl