interference at the top of the drilling motor 10 for each bend as can be seen drill bit 14 is centralized in the well bore 32 and the u201c low u201d side of the bend 26 is in contact with the wall of straight section 34 of well bore 24 usually with a wear resistant pad 36 providing the contact point 22 drilling a curved section 30 in a well bore 24 to change its direction is dependent on the magnitude of the interference resulting from the selected bend larger bends resulting in greater interferences generally drill sharper curves to produce larger changes in the well bore direction this method of directional drilling requires three points of contact to induce the appropriate side loading and produce the desired curve in the well bore the three points are 1 the centralized bit 14 in the well bore 24 2 the u201c low u201d side of the bend 22 in contact with the wall of well bore 24 and 3 the top 38 of the drilling motor 10 in contact with the wall of well bore 24 fig3 a 3c represent the applied physical forces required to u201c fit u201d a drilling motor with a 2 38 u00b0 bend into the straight section 34 of well bore 24 fig3 shows an example of the resulting side loads at each of.