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US 6,640,625 B1Granted
Method and apparatus for measuring fluid density downhole
OwnerAnthony R. H. Goodwininventor
Life of this patent
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Abstract
Apparatus for determining the density of a fluid downhole includes apparatus for measuring compressibility of the fluid and apparatus for determining the speed of sound through the fluid. According to the methods of the invention, density of the fluid is calculated based upon the relationship between density, compressibility, and the speed of sound through the fluid.
Claims18
A method for determining the density of hydrocarbon fluid in a formation, comprising:
- a) obtaining a sample of the hydrocarbon fluid from the formation;
- b) determining the compressibility of the sample;
- c) determining the speed of sound trough the sample;
- and
- d) calculating the density of the sample from the compressibility and the speed of sound through the sample.
2 more elements
An apparatus for determining the density of hydrocarbon fluid in a formation, comprising:
- a) fluid conduit which receives a sample of the hydrocarbon fluid from the formation;
- b) means for determining the compressibility of the sample;
- c) means for determining the speed of sound through the sample;
- and
- d) means for calculating the density of the sample from the compressibility and the speed of sound through the sample.
2 more elements
Dependencies are inferred from the claim text.