Device and Method for Measuring a Property in a Downhole Apparatus
First Claim
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1. A computer-implemented method comprising:
- measuring an orientation A of a first location on a downhole apparatus at a first time and an orientation B of the first location on the downhole apparatus at a second time;
measuring an orientation C of a second location on the downhole apparatus at the first time and an orientation D of the second location on the downhole apparatus at the second time; and
computing a moment of force being applied to the downhole apparatus using orientations A, B, C, and D.
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Abstract
A method and device for measuring a property, such as torque, includes a plurality of sensors, and a measuring device. The sensors attach to a downhole apparatus at a distance from one another. The sensors provide signals indicating their positions. A logic circuit may calculate an angle between the sensors. The logic circuit then calculates the property based on the angle, the distance between the sensors, and other known physical properties of the downhole apparatus.
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Citations
21 Claims
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1. A computer-implemented method comprising:
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measuring an orientation A of a first location on a downhole apparatus at a first time and an orientation B of the first location on the downhole apparatus at a second time; measuring an orientation C of a second location on the downhole apparatus at the first time and an orientation D of the second location on the downhole apparatus at the second time; and computing a moment of force being applied to the downhole apparatus using orientations A, B, C, and D. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14)
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8. A computer program, stored in a tangible computer-readable medium, the program comprising executable instructions that cause a computer to:
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measure an orientation A of a first location on a downhole apparatus at a first time and an orientation B of the first location on the downhole apparatus at a second time; measure an orientation C of a second location on the downhole apparatus at the first time and an orientation D of the second location on the downhole apparatus at the second time; and compute a moment of force being applied to the downhole apparatus using orientations A, B, C, and D. - View Dependent Claims (9, 10, 11, 12, 13)
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15. A system comprising:
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a drill string; a downhole apparatus coupled to the drill string; a computer; a first sensor coupled to the downhole apparatus at a first location, the first sensor to measure an orientation A of the first location on the downhole apparatus at a first time and an orientation B of the first location on the downhole apparatus at a second time; a second sensor coupled to the downhole apparatus at a second location, the second sensor to measure an orientation C of a second location on the downhole apparatus at the first time and an orientation D of the second location on the downhole apparatus at the second time; and the computer to receive the orientations A, B, C, and D from the first sensor and the second sensor and to compute a moment of force being applied to the downhole apparatus using orientations A, B, C, and D. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification