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    <subfield code="a">Downhole temperatures from optical fiber</subfield>
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    <subfield code="c">Winter 2008/2009</subfield>
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    <subfield code="a">For more than a decade, fiber-optic technology has slowly been integrated into an expanding array of oilfield applications. In addition to being a medium for transmitting data and commands, optical fiber is an intrinsic thermometer that can be sampled along its entire length. This article describes how operators use pulses of light to monitor downhole temperature and thermal processes.</subfield>
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    <subfield code="d">2026-03-05</subfield>
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