Method and system to model, measure, recalibrate, and optimize control of the drilling of a borehole
First Claim
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1. A method of drilling a borehole, comprising:
- providing a model;
drilling a discrete interval of a borehole based upon the model; and
modifying the model based on data obtained during drilling.
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Abstract
Methods and systems for controlling the drilling of a borehole are disclosed. The methods employ the assumption that nonlinear problems can be modeled using linear equations for a local region. Common filters can be used to determine the coefficients for the linear equation. Results from the calculations can be used to modify the drilling path for the borehole. Although the calculation/modification process can be done continuously, it is better to perform the process at discrete intervals along the borehole in order to maximize drilling efficiency.
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Citations
28 Claims
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1. A method of drilling a borehole, comprising:
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providing a model;
drilling a discrete interval of a borehole based upon the model; and
modifying the model based on data obtained during drilling. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of drilling a borehole, comprising:
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providing a model;
drilling a discrete interval of a borehole based upon the model;
modifying the model based on data obtained during drilling by;
separating the inclinometer data from the magnetometer data;
resampling data on a regular grid;
filtering observed data;
estimating noise;
mapping y values;
determining one or more linear state variables;
estimating statistics; and
constructing estimators. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. A computer-readable storage medium containing a set of instructions for a general purpose computer, the set of instructions comprising:
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an input routine operatively associated with one or more sensors;
a run routine for implementing an update method; and
an output routine for controlling a drilling operation. - View Dependent Claims (28)
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Specification