Impact sensing during jarring operations
First Claim
1. An apparatus, comprising:
- a downhole tool comprising;
opposing interfaces for incorporation of the downhole tool into a downhole tool string;
a housing extending between the opposing interfaces, wherein a bore extends longitudinally through the housing between the opposing interfaces;
an accelerometer disposed within the bore of the housing for detecting acceleration of the downhole tool in response to a mechanical impact generated elsewhere within the downhole tool string, wherein the accelerometer generates an output signal indicative of the acceleration;
a processor for processing the output signal;
a memory device for storing the output signal or data generated by the processor; and
an electrical energy source powering the processor and the memory device.
3 Assignments
0 Petitions
Accused Products
Abstract
A downhole tool having opposing interfaces for incorporation of the downhole tool into a downhole tool string. A housing extends between the opposing interfaces, and a bore extends longitudinally through the housing between the opposing interfaces. An accelerometer is disposed within the bore of the housing for detecting acceleration of the downhole tool in response to a mechanical impact generated elsewhere within the downhole tool string. The accelerometer generates an output signal indicative of the acceleration. The downhole tool also includes a processor for processing the output signal, a memory device for storing the output signal or data generated by the processor, and an electrical energy source powering the processor and the memory device.
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Citations
20 Claims
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1. An apparatus, comprising:
a downhole tool comprising; opposing interfaces for incorporation of the downhole tool into a downhole tool string; a housing extending between the opposing interfaces, wherein a bore extends longitudinally through the housing between the opposing interfaces; an accelerometer disposed within the bore of the housing for detecting acceleration of the downhole tool in response to a mechanical impact generated elsewhere within the downhole tool string, wherein the accelerometer generates an output signal indicative of the acceleration; a processor for processing the output signal; a memory device for storing the output signal or data generated by the processor; and an electrical energy source powering the processor and the memory device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus, comprising:
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a jarring tool comprising; upper and lower jarring tool housings having respective jarring tool interfaces for incorporation of the jarring tool into a downhole tool string; and a shaft coupled with the lower jarring tool housing and extending into the upper jarring tool housing, wherein the upper jarring tool housing moves axially relative to the lower jarring tool housing along the shaft; and a sensor tool comprising; opposing sensor tool interfaces for incorporation of the sensor tool into the downhole tool string; a sensor tool housing extending between the opposing sensor tool interfaces, wherein a bore extends longitudinally through the sensor tool housing between the opposing sensor tool interfaces; an accelerometer disposed within the bore of the sensor tool housing for detecting acceleration in response to a mechanical impact generated by movement of the upper jarring tool housing away from the lower jarring tool housing until corresponding impact features of the upper and lower jarring tool housings collide, wherein the accelerometer generates an output signal indicative of the acceleration; a processor for processing the output signal; a memory device for storing the output signal or data generated by the processor; and an electrical energy source powering the processor and the memory device. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification