Well protection systems and methods
First Claim
1. A method, comprising:
- tracking, automatically by a controller of a drilling rig, a position of a bit at a distal end of a bottom hole assembly coupled to a drill string of the drilling rig during a surge or swab operation through a wellbore environment of a wellbore;
determining, automatically by the controller at a first time during the surge or swab operation, the wellbore environment comprises a first wellbore environment from the tracked position of the bit based on at least one received drilling parameter relating to the drill string in the wellbore;
adjusting, dynamically by the controller during the surge or swab operation, a trip speed of the drill string to a first trip speed based on the determined first wellbore environment;
determining, automatically by the controller at a second time during the surge or swab operation, the wellbore environment comprises a second wellbore environment from the tracked position of the bit based on the at least one received drilling parameter relating to the drill string in the wellbore; and
adjusting, dynamically by the controller during the surge or swab operation, the trip speed of the drill string to a second trip speed based on the determined second wellbore environment.
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Accused Products
Abstract
The systems, devices, and methods described herein describe a control system that automatically determines a trip speed for a surge operation or a swab operation. The control system is used to automatically adjust the trip speed during the respective surge or swab operation in order to optimize the trip speed according to the changing environment of the wellbore that the bottom hole assembly traverses without exceeding the fracture gradient in the wellbore location. A well plan identifies formations along the wellbore route, dynamic real-time tracking of the tubulars added to the drill string and removed therefrom identifies the current location of the BHA in the wellbore, and pressure and fractional gradient at the location of the BHA, and in some embodiments a real-time pressure measurement from the BHA, together are used to automatically determine the maximum tripping speed possible for the formation that the BHA is traversing.
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Citations
20 Claims
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1. A method, comprising:
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tracking, automatically by a controller of a drilling rig, a position of a bit at a distal end of a bottom hole assembly coupled to a drill string of the drilling rig during a surge or swab operation through a wellbore environment of a wellbore; determining, automatically by the controller at a first time during the surge or swab operation, the wellbore environment comprises a first wellbore environment from the tracked position of the bit based on at least one received drilling parameter relating to the drill string in the wellbore; adjusting, dynamically by the controller during the surge or swab operation, a trip speed of the drill string to a first trip speed based on the determined first wellbore environment; determining, automatically by the controller at a second time during the surge or swab operation, the wellbore environment comprises a second wellbore environment from the tracked position of the bit based on the at least one received drilling parameter relating to the drill string in the wellbore; and adjusting, dynamically by the controller during the surge or swab operation, the trip speed of the drill string to a second trip speed based on the determined second wellbore environment. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A drilling rig apparatus comprising:
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a drill string comprising at least one tubular and a bottom hole assembly in a wellbore; a hoisting/lowering mechanism configured to lower the drill string into the wellbore in a surge operation and hoist the drill string out of the wellbore in a swab operation; and a well protection controller in communication with the hoisting/lowering mechanism and configured to; receive, during the surge or the swab operation, at least one drilling parameter relating to the drill string in the wellbore, determine, at a first time during the surge or the swab operation, a first trip speed of the drill string based on the at least one drilling parameter in a first wellbore environment of the wellbore, send, at the first time during the surge or the swab operation, the determined first trip speed to the hoisting/lowering mechanism, determine, at a second time during the surge or the swab operation, a second trip speed of the drill string based on the at least one drilling parameter in a second wellbore environment of the wellbore, and send, at the second time during the surge or the swab operation, the determined second trip speed to the hoisting/lowering mechanism. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory machine-readable medium having stored thereon machine-readable instructions executable to cause a machine to perform operations comprising:
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receiving, automatically during a swab operation, at least one drilling parameter relating to a wellbore and a drill string of a drilling rig in the wellbore; determining, automatically at a first time during the swab operation, a first swab speed of the drill string in the wellbore based on a first position in a wellbore environment determined from the at least one drilling parameter; updating, automatically at the first time during the swab operation, a rate of operation of a drilling rig component that hoists the drill string in the wellbore based on the first determined swab speed; determining, automatically at a second time during the swab operation, a second swab speed of the drill string in the wellbore based on a second position in the wellbore environment determined from the at least one drilling parameter; and updating, automatically at the second time during the swab operation, the rate of operation of the drilling rig component that hoists the drill string in the wellbore based on the second determined swab speed. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification