| CPC E21B 44/02 (2013.01) [E21B 45/00 (2013.01); E21B 47/12 (2013.01); E21B 2200/20 (2020.05); E21B 2200/22 (2020.05)] | 18 Claims |
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1. A method, comprising:
obtaining, using a computer processor and from a plurality of surface sensors, a plurality of historical drilling signals for a plurality of previously drilled wells, wherein the plurality of historical drilling signals correspond to a Rate of Penetration (ROP) and a plurality of surface-measured drilling parameters is measured during drilling activities of the plurality of previously drilled wells;
applying, using the computer processor, Fourier Transform to decompose the plurality of historical drilling signals by at least converting the plurality of surface-measured drilling parameters as functions of time into the plurality of surface-measured drilling parameters as functions of frequency;
determining, using the computer processor, an optimum ROP based on one or more optimized surface-measured drilling parameters generated after measuring, analyzing, and filtering the plurality of surface-measured drilling parameters as functions of frequency;
generating trends of the one or more optimized surface-measured drilling parameters for each of the different formations of the plurality of previously drilled wells;
without deploying any downhole sensing devices to measure downhole drilling parameters of any new wells, using the trends of the one or more optimized surface-measured drilling parameters in making a decision related to the drilling activities of a new well based on prediction of a compressive strength of different formations of the plurality of previously drilled wells; and
performing, in response to the decision, the drilling activities of the new well based on the prediction of the compressive strength of the different formations.
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