| 摘要 |
In-situ formation fluid evaluation methods and apparatus configured to measure a first resonance frequency of a first fluid using a first densimeter downhole, wherein a first density of the first fluid is known; measure a second resonance frequency of a second fluid using a second densimeter downhole, wherein the second fluid is a formation fluid received by the second densimeter downhole, and wherein a second density of the second fluid is unknown; and determine the second density of the second fluid using the first and second resonance frequencies and the known first density.
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