FIELD: soil or rock drilling.
SUBSTANCE: invention relates to control of borehole deviation during drilling. In particular, disclosed is a method of control borehole deviation using a section of borehole instruments, comprising steps of: measuring bending of said section of borehole instruments in a plurality of positions surrounding section of borehole instruments, when said section of borehole instruments is in well at first depth; determining a first bending moment acting on said borehole instrument section based on the measured bend; and determining the first value of borehole deviation intensity based on the determined first bending moment. Then bending of said section of borehole instruments is measured in multiple positions surrounding section of borehole instruments, when said section of borehole instruments is located in well at second depth; determining second bending moment acting on said section of borehole instruments based on bend measured at said second depth; and determining the second borehole deviation intensity value based on the determined second bending moment. Further, the borehole deviation intensity index is determined taking into account the said first and second borehole deviation intensity values and the predicted borehole deviation intensity.
EFFECT: optimization of efficiency and efficiency of drilling due to well curvature prediction and optimization of load on drilling bit to account for forces of movement resistance or friction caused by curvature.
13 cl, 8 dwg
