Method and apparatus for prediction control in drilling dynamics using neural networks
First Claim
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1. An apparatus for use in drilling an oilfield wellbore, comprising:
- (a) a drill disposed on a distal end of a drillstring;
(b) a plurality of sensors disposed in the drillstring, each said sensor making measurements during the drilling of the wellbore relating to a parameter of interest;
(c) a processor adapted to process the measurements for creating answers indicative of the measured parameter of interest; and
(d) a downhole analyzer including a neural network operatively associated with the sensors and the processor for predicting behavior of the drillstring.
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Abstract
The present invention provides a drilling system that utilizes a neural network for predictive control of drilling operations. A downhole processor controls the operation of the various devices in a bottom hole assembly to effect changes to drilling parameters and drilling direction to autonomously optimize the drilling effectiveness. The neural network iteratively updates a prediction model of the drilling operations and provides recommendations for drilling corrections to a drilling operator.
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Citations
25 Claims
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1. An apparatus for use in drilling an oilfield wellbore, comprising:
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(a) a drill disposed on a distal end of a drillstring;
(b) a plurality of sensors disposed in the drillstring, each said sensor making measurements during the drilling of the wellbore relating to a parameter of interest;
(c) a processor adapted to process the measurements for creating answers indicative of the measured parameter of interest; and
(d) a downhole analyzer including a neural network operatively associated with the sensors and the processor for predicting behavior of the drillstring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A drilling system for drilling an oilfield wellbore, comprising:
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(a) a drill string having a BHA, the BHA including;
(i) a drill bit at an end of the BHA;
(ii) a plurality of sensors disposed in the BHA, each said sensor making measurements during the drilling of the wellbore relating to one or more parameters of interest; and
(iii) a processor in the BHA, said processor utilizing the plurality of models to manipulate the measurements from the plurality of sensors to determine answers relating to the measured parameters of interest downhole during the drilling of the wellbore;
(b) a downhole analyzer including a neural network operatively associated with the sensors and the processor for predicting behavior of the drillstring;
(c) a transmitter associated with the BHA for transmitting data to the surface; and
(d) an interface panel, said interface panel for receiving said data from the BHA and in response thereto providing recommendations for adjusting at least one drilling parameter at the surface to a drilling operator. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of drilling an oilfield wellbore using predictive control, comprising:
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(a) drilling a wellbore using a drill bit disposed on a distal end of a drillstring;
(b) making measurements during the drilling of the wellbore relating to one or more parameters of interest using a plurality of sensors disposed in the drillstring;
(c) processing the measurements with processor; and
(d) predicting behavior of the drillstring using a downhole analyzer including a neural network operatively associated with the sensors and the processor. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification