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AssigneeSchlumberger Technology Corporation
InventorDavid Linton Johnson
Estimating the term…
Methods and apparatus to determine slowness of drilling fluid in an annulus are described. An example method of determining slowness of drilling fluid in an annulus of a borehole in a formation includes obtaining a first slowness of the drilling fluid in the annulus and measuring with a downhole tool slownesses of the formation based on the first slowness. The example method also includes determining a first compressibility of the formation based on the slownesses of the formation and a first density of the formation and calculating a second density and a second compressibility of the drilling fluid in the annulus based on the first density and the first compressibility. The method also includes calculating a second slowness of the drilling fluid in the annulus based on the second density and the second compressibility.
A method of determining slowness of drilling fluid in an annulus of a borehole in a formation, comprising:
A system to determine slowness of drilling fluid in an annulus of a borehole in a formation, comprising:
A logging-while-drilling tool to determine slowness of drilling fluid, comprising:
Dependencies are inferred from the claim text.