Patent ID: 8689902
Filing Date: 2014-04-08
Classification: E21B

Abstract:
1. A method for displaying holes to be drilled when drilling holes into rock with a rock-drilling rig having control equipment and a display belonging thereto, and measuring means for defining the direction and position of the drill rod, by using a pre-designed drilling plan that is defined using a three-dimensional set of coordinates relative to the rock and that defines for each hole to be drilled a starting point and an end point in accordance with the direction of each planned hole, and in which method, for drilling a hole, a projection according to the drilling plan of the planned hole is displayed on the display of the control equipment on a transverse projection plane of the holes to be drilled, and a projection of the hole created when drilling according to the current position of the drill rod on said projection plane in accordance with a target length set for the hole, comprising a) defining for each hole a base plane running through the end point of the hole and parallel to the projection plane and b) displaying on a display a first graphical locating symbol representing an intersection point between the base plane and the projection of the hole created when drilling according to the current position of the drill rod, and c) displaying on the display a representation of any difference between the first graphical locating symbol and an end point of the hole created when drilling according to the current position of the drill rod.