System and method for defining a drilling path based on cost
First Claim
1. A method for selecting one of a plurality of convergence paths based on cost comprising:
- identifying, by a computer system, a plurality of geometric convergence paths, wherein each of the geometric convergence paths provides a convergence solution from a defined bottom hole assembly (BHA) location to a target path for a bore hole;
calculating, by the computer system, a total monetary cost for each of the geometric convergence paths, wherein calculating the total monetary cost includes identifying an offset cost based on a distance of the geometric convergence path from the target path, identifying a curvature cost based on an amount of curvature of the geometric convergence path, identifying a time cost based on an estimated amount of time needed to drill the geometric convergence path and combining the offset cost, the curvature cost and the time cost to obtain the total monetary cost;
comparing, by the computer system, the total monetary costs of the geometric convergence paths to one another;
selecting, by the computer system, one of the geometric convergence paths based on the total monetary cost of that geometric convergence path relative to the total monetary costs of the other geometric convergence paths;
outputting, by the computer system, the selected geometric convergence path;
feeding the selected geometric convergence path to a controller of a drilling rig; and
controlling the drilling rig, by the controller associated with the drilling rig, to drill a well in accordance with the selected geometric convergence path.
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Accused Products
Abstract
Provided are a system and method for calculating and selecting a convergence path based on cost. In one example, the method includes identifying multiple geometric convergence paths that each provides a convergence solution from a defined bottom hole assembly (BHA) location to a target path. A total monetary cost is calculated for each of the geometric convergence paths using an offset cost based on a distance of the geometric convergence path from the target path, a curvature cost based on an amount of curvature of the geometric convergence path, and a time cost based on an estimated amount of time needed to drill the geometric convergence path. The total monetary costs of the geometric convergence paths are compared and one of the geometric convergence paths is selected based on the total monetary cost of that geometric convergence path relative to the total monetary costs of the other geometric convergence paths.
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Citations
29 Claims
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1. A method for selecting one of a plurality of convergence paths based on cost comprising:
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identifying, by a computer system, a plurality of geometric convergence paths, wherein each of the geometric convergence paths provides a convergence solution from a defined bottom hole assembly (BHA) location to a target path for a bore hole; calculating, by the computer system, a total monetary cost for each of the geometric convergence paths, wherein calculating the total monetary cost includes identifying an offset cost based on a distance of the geometric convergence path from the target path, identifying a curvature cost based on an amount of curvature of the geometric convergence path, identifying a time cost based on an estimated amount of time needed to drill the geometric convergence path and combining the offset cost, the curvature cost and the time cost to obtain the total monetary cost; comparing, by the computer system, the total monetary costs of the geometric convergence paths to one another; selecting, by the computer system, one of the geometric convergence paths based on the total monetary cost of that geometric convergence path relative to the total monetary costs of the other geometric convergence paths; outputting, by the computer system, the selected geometric convergence path; feeding the selected geometric convergence path to a controller of a drilling rig; and controlling the drilling rig, by the controller associated with the drilling rig, to drill a well in accordance with the selected geometric convergence path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for calculating a total monetary cost for a geometric convergence path that provides a convergence solution from a defined bottom hole assembly (BHA) location to a target path, the method comprising:
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calculating, by a computer system, an offset cost for the geometric convergence path by dividing the geometric convergence path into a plurality of path segments, identifying a distance of each path segment from the target path, identifying a segment cost for each path segment based on a distance of the path segment from the target path, and combining the cost of the path segments to calculate the offset cost of the geometric convergence path; calculating, by the computer system, a curvature cost for the geometric convergence path by identifying a peak curvature of the geometric convergence path, identifying an overall curvature of the geometric convergence path, and identifying the curvature cost responsive to the peak curvature and the overall curvature; calculating, by the computer system, a time cost for the geometric convergence path by identifying each rotating segment and each sliding segment of the geometric convergence path, identifying an estimated amount of time needed to complete each of the rotating and sliding segments, and identifying the time cost as the aggregated estimated amounts of time multiplied by a cost of a drilling rig per unit time; combining the offset cost, the curvature cost and the time cost to provide the total monetary cost; comparing the total monetary cost to a plurality of total monetary costs for a plurality of other geometric convergence paths to identify which of the geometric convergence paths has a total monetary cost that best satisfies a defined parameter; and outputting the identified geometric convergence path; feeding the identified geometric convergence path to a controller of a drilling rig; and controlling the drilling rig, by the controller associated with the drilling rig, to drill a well in accordance with the selected geometric convergence path. - View Dependent Claims (20, 21, 22)
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23. A system comprising:
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a processor; a memory coupled to the processor and configured to store a plurality of instructions executable by the processor, the instructions including instructions for; identifying a plurality of geometric convergence paths, wherein each of the geometric convergence paths provides a convergence solution from a defined bottom hole assembly (BHA) location to a target path for a bore hole; calculating a total monetary cost for each of the geometric convergence paths, wherein calculating the total monetary cost includes identifying an offset cost based on a distance of the geometric convergence path from the target path, identifying a curvature cost based on an amount of curvature of the geometric convergence path, identifying a time cost based on an amount of time needed to drill the geometric convergence path and combining the offset cost, the curvature cost and the time cost to obtain the total monetary cost; comparing the total monetary costs of the geometric convergence paths to one another; selecting one of the geometric convergence paths based on the total monetary cost of that geometric convergence path relative to the total monetary costs of the other geometric convergence paths; outputting the selected geometric convergence path; and a controller associated with a drilling rig for receiving the selected convergence path and for controlling the drilling rig to drill a well in accordance with the selected geometric convergence path. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification