METHOD AND SYSTEM FOR REAL-TIME ESTIMATION OF AT LEAST ONE PARAMETER RELATED TO THE DISPLACEMENT OF A DRILL BIT

摘要

the present invention relates to a system and a method for estimating theeffective movement of a drilling tool mounted on the end of a liningdrilling andin rotation, in a well by means of training insurface. inthe invention uses a nonlinear physical model of drilling processbased onthe general equations of mechanics. in the method, we carried out thestepsto:the parameters of the model, taking into account the parametersthe shaft and the toppings.linearizing the model around it from the point of operation.we reduced the linearized model by retaining only some of the waysownthe state matrix of the model.it calculates, in real time, the motion of the drilling tool with the help ofmodelcut and at least one parameter measured at the surface.