Methods and systems for downhole temperature logging
First Claim
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1. A downhole temperature logging method comprising:
- deploying a temperature logging device into a borehole, said temperature logging device having a mechanical drive and at least one shape memory alloy (SMA) unit;
deforming the at least one SMA unit in response to a temperature or temperature range, wherein said deforming results in marks to a medium; and
retrieving the medium from the borehole and analyzing the marks.
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Abstract
A downhole temperature logging method includes deploying a temperature logging device into a borehole, the temperature logging device having a mechanical drive and at least one shape memory alloy (SMA) unit. The method also includes deforming the SMA unit in response to a temperature or temperature range, wherein the deforming causes marks to a medium. The method also includes retrieving the medium and analyzing the marks.
21 Citations
20 Claims
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1. A downhole temperature logging method comprising:
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deploying a temperature logging device into a borehole, said temperature logging device having a mechanical drive and at least one shape memory alloy (SMA) unit; deforming the at least one SMA unit in response to a temperature or temperature range, wherein said deforming results in marks to a medium; and retrieving the medium from the borehole and analyzing the marks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A downhole temperature logging device that comprises:
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at least one shape memory alloy (SMA) unit; a medium that receives marks due to deformation of the at least one SMA unit in response to a temperature or temperature range; and a mechanical drive that moves the medium in relation to the at least one SMA unit as a function of time or the temperature logging device'"'"'s position along a borehole. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification