Optimal drilling parameter machine learning system and methods

An apparatus for drilling a first segment of a wellbore that has a first set of distinctive characteristics, comprising:

• a non-transitory computer readable medium having stored thereon a plurality of instructions, wherein the instructions are executed with at least one processor so that the following steps are executed:
• training a first machine learning model using a first plurality of historical wellbore drilling records;
• wherein each of the historical wellbore drilling records of the first plurality of historical wellbore drilling records comprises historical data obtained during drilling of a wellbore and upon which a delta mechanical specific energy (“MSE”) is calculated for a given depth of the wellbore;
• wherein the delta MSE is a difference between a surface MSE and a bottom hole assembly (“BHA”) MSE for the given depth;
• wherein each of the wellbores associated with the first plurality of historical wellbore drilling records has the first set of distinctive characteristics;
• and
• wherein an output of the first machine learning model is a first mathematical expression representing a relationship between a first set of optimization parameters and the delta MSE when drilling a wellbore that has the first set of distinctive characteristics;
• generating, based on the first mathematical expression, first target values for the first set of optimization parameters for drilling of the wellbore;
• drilling a first portion of the first segment of the wellbore using the first target values for the first set of optimization parameters;
• monitoring drilling parameters during the drilling of the first segment of the wellbore;
• calculating, based on the monitored drilling parameters, the delta MSE associated with the first portion of the first segment of the wellbore;
• optimizing the first target values for the first set of optimization parameters, using the first mathematical expression and in response to the calculated delta MSE, to reduce the delta MSE;
• and
• drilling a second portion of the first segment of the wellbore using the optimized first target values for the first set of optimization parameters.

A method of optimizing drilling instructions for segments of a wellbore, the method comprising:

• calculating a first and second mathematical approximations of energy transfer loss between a top drive and a bottom hole assembly coupled to the top drive using a neural network and a plurality of drilling records for segments of wellbores that are similar to the segment of the wellbore to be drilled;
• calculating a first set of drilling instructions based on the first mathematical approximation;
• calculating a second set of drilling instructions based on the second mathematical approximation;
• wherein the second mathematical approximation is different from the first mathematical approximation;
• drilling a first portion of a first segment of the wellbore using the first set of drilling instructions;
• monitoring the energy transfer loss between a top drive associated with the wellbore and a bottom hole assembly associated with the wellbore while drilling the first portion of the first segment of the wellbore;
• optimizing the first set of drilling instructions using the first mathematical approximation to minimize the energy transfer loss between the top drive and the bottom hole assembly;
• drilling a second portion of the first segment of the wellbore using the optimized first set of drilling instructions;
• drilling a first portion of a second segment of the wellbore using the second set of drilling instructions;
• monitoring the energy transfer loss between the top drive and the bottom hole assembly while drilling the first portion of the second segment of the wellbore;
• optimizing the second set of drilling instructions using the second mathematical approximation to minimize the energy transfer loss between the top drive and the bottom hole assembly;
• and
• drilling a second portion of the second segment of the wellbore using the optimized second set of drilling instructions.