Drilling rig closed loop controls
First Claim
1. A method for drilling a wellbore, comprising:
- advancing a drill string into the ground via a drilling rig according to manual drilling control input, the drill string having downhole sensors and a drill bit, the rig having surface sensors, a drilling control system operatively connected to the drill string;
acquiring surface measurement data representative of surface drilling parameters via the surface sensors;
acquiring downhole measurement data representative of downhole drilling parameters via the downhole sensors;
determining an optimized drilling control model by using the drilling control system to electronically compare the surface measurement data and the downhole measurement data; and
adjusting the drilling control input based on the drilling control model.
1 Assignment
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Accused Products
Abstract
Method, apparatus and systems for drilling wells, such as for production of petroleum products and ensuring efficient well drilling and protection of well drilling systems during drilling operations. A closed-loop drilling control system, including a digital switching control regulator (SCR) module is provided for automated actuation of selected drilling rig controls responsive to downhole and surface measurements of drilling parameters. The closed-loop drilling control system is responsive to digital data from a measuring-while-drilling (MWD) tool for refining the drilling controls by automated correction of driller inputs to the drilling controls of the well drilling system during drilling operations. The downhole data, such as surface weight on bit, downhole weight on bit, pressure and flow rate of downhole drilling fluid hydraulics, etc. is transmitted by MWD telemetry to a digitally controlled switching control regulator (SCR) module via an interfacing computer and utilized to refine the drilling controls by automated downhole data responsive correction of driller inputs to the drilling controls of the well drilling system.
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Citations
25 Claims
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1. A method for drilling a wellbore, comprising:
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advancing a drill string into the ground via a drilling rig according to manual drilling control input, the drill string having downhole sensors and a drill bit, the rig having surface sensors, a drilling control system operatively connected to the drill string;
acquiring surface measurement data representative of surface drilling parameters via the surface sensors;
acquiring downhole measurement data representative of downhole drilling parameters via the downhole sensors;
determining an optimized drilling control model by using the drilling control system to electronically compare the surface measurement data and the downhole measurement data; and
adjusting the drilling control input based on the drilling control model. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
converting the downhole measurement data to digital downhole measurement data via the computer interface/transfer function; and
inputting the digital downhole measurement data to the switching control regulator.
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6. The method of claim 4, further comprising;
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transmitting measurement data from the sensors to the computer interface/transfer function via a telemetry system;
generating a measurement data output from the computer interface/transfer function; and
conducting the measurement data output from the computer interface/transfer function to the digital switching control regulator.
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7. The method of claim 1 wherein the drilling control input comprises one of rate of drill bit penetration, stand pipe pressure, and combinations thereof.
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8. The method of claim 1 wherein the drilling control input comprises rpm.
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9. The method of claim 1 wherein the drilling control input comprises fluid flow rate, surface pump pressure and combinations thereof.
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10. The method of claim 1 wherein the step of adjusting is automatic.
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11. A method for drilling a wellbore, comprising:
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advancing a drill string into the ground via a drilling rig according to manual drilling control input, the drill string having downhole sensors and a drill bit, a drilling control system operatively connected to the drill string;
acquiring downhole measurement data representative of downhole drilling parameters via the downhole sensors;
determining an optimized drilling control model by using the drilling control system to process the downhole measurement data; and
adjusting the drilling control input based on the drilling control model. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
converting the downhole measurement data to digital downhole measurement data via the computer interface/transfer function; and
inputting the digital downhole measurement data to the switching control regulator.
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15. The method of claim 13, further comprising;
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transmitting measurement data to the computer interface/transfer function via a telemetry system;
generating a measurement data output from the computer interface/transfer function; and
conducting the measurement data output from the computer interface/transfer function to the digital switching control regulator.
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16. The method of claim 11 wherein the drilling control input comprises one of rate of drill bit penetration, stand pipe pressure, and combinations thereof.
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17. The method of claim 11 wherein the drilling control input comprises rpm.
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18. The method of claim 11 wherein the drilling control input comprises fluid flow rate, surface pump pressure and combinations thereof.
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19. A system for drilling a wellbore, comprising:
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a drilling rig positioned on a surface above the wellbore, the rig having surface sensors operatively connected thereto for collecting surface measurement data;
a drill siring operatively suspended below the rig and into the wellbore, the drill string having a drill bit operatively connected to a downhole end thereof, the drill string having downhole sensors for collecting downhole measurement data operatively connected thereto; and
a drilling control system operatively connected to the rig and the drill string, the drilling control system adapted to generate a drilling control model from the measurement data and provide optimized control input for operation of the drill string. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification