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FIT-A Fluid ID Tool
The Fluid ID tool is used to make logs of the fluid mixture Density and Capacitance. The combination of measurements allows calculation of individual holdups in three-phase oil/water/gas mixtures.
It uses an internal 1 mCi Ba-133 radioactive source (50 times less strong than competing tools) and super-sensitive scintillator crystal with a photomultiplier for maximum log quality. The detector is fully shielded from “Naturally Occurring Radioactive Material” if it is present on the casing wall.
The electronics are temperature compensated to maintain accurate count-rates at all rated temperatures.
High count-rates (typically 30,000 cps) ensure statistical errors are less than 0.01 gm/cc. (with averaging over 1 second intervals) and minimize the influence of NORM radiation.
The center-sample measurement includes a simultaneous 250 KHz capacitance measurement that senses water content from 0 - 100%.
The tool replaces the conventional fluid density and capacitance tools with greatly improved accuracy and range due to the new sensors and the simultaneous sampling on the same volume of fluid.
Correlation of the two sensor readings may be made at approximately 16 times per second to compensate for separation of the fluid phases in slug or turbulent flow.
The graphs below show typical measurement accuracy for both density and dielectric constant in various materials.
