Sensing indicator having RFID tag, downhole tool, and method thereof
AssigneeBaker Hughes Incorporated
InventorEllen E. Read
Life of this patent
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Abstract
A sensing indicator for a downhole tool, the sensing indicator includes a sensing mechanism including a sensing device and an RFID tag. Wherein the RFID tag is only readable when a set limit is exceeded. The set limit related to a sensed condition of a downhole component of the downhole tool; and, a housing supporting the sensing mechanism. The housing protecting the sensing mechanism from downhole conditions. Further is method of indicating whether a sensed condition of a downhole component in a downhole tool has exceeded a set limit
Claims22
A sensing indicator for a downhole tool, the sensing indicator comprising:
- a sensing mechanism including a sensing device, a radiofrequency identification tag, and a switch, the sensing device arranged to sense a sensed condition of a downhole component of the downhole tool, the sensed condition including at least one of a temperature, pressure, and strain condition, wherein the radiofrequency identification tag is unreadable before the sensed condition exceeds a set limit, the switch configured to automatically trigger the radiofrequency identification tag from unreadable to readable upon the sensed condition exceeding the set limit, and the radiofrequency identification tag configured to remain readable after the set limit is exceeded;
- and,
- a housing supporting the sensing mechanism, the housing protecting the sensing mechanism from downhole conditions.
A method of indicating whether a sensed condition of a downhole component in a downhole tool has exceeded a set limit, the method comprising:
- providing a sensing indicator including a sensing mechanism, the sensing mechanism including a sensing device, a radiofrequency identification tag, and a switch, the sensing device arranged to sense a sensed condition of the downhole component of the downhole tool, the sensed condition including at least one of a temperature, pressure, and strain condition, wherein the radiofrequency identification tag is unreadable before the sensed condition exceeds a set limit, the switch configured to automatically trigger the radiofrequency identification tag from unreadable to readable upon the sensed condition exceeding the set limit, and the radiofrequency identification tag configured to remain readable after the set limit is exceeded;
- attaching a housing of the sensing indicator to the downhole tool;
- employing the downhole component within a borehole;
- and
- interrogating the sensing mechanism of the sensing indicator to determine whether the sensed condition has exceeded the set limit.
Dependencies are inferred from the claim text.