Conventional separators and other metering devices require constant basic sediments and water (BSW) sampling, which does not deliver instantaneous results. Similarly, sand-only meters require further postjob analysis for sand quantification. The Vx Spectra flowmeter makes a single-point measurement that determines phase fractions of the flow through low-energy gamma radiation measurements along with fluid dynamics models. For sand quantification, the same principle applies as the original three-phase water, oil, gas point. The configuration file still uses the nuclear, fluid dynamics, and PVT models to make computations for the phase fractions, total mass flow rates, and standard conditions. During the job, with the sand configuration file applied, instantaneous sand rates can be obtained along with water and gas flow rates.
The real-time sand quantification and water and gas rates were transmitted to the coiled tubing operators as they were measured, enabling the operator to make real-time decisions during the operation.