Abstract: An inline multiphase densitometer. This disclosure is related to an in-line device that measures the density and phase fraction of a multiphase fluid composed of three separate phases in a mixture, typically gas, water and oil, or alternatively, gas, gas condensate and water. The device is connected to a flow line and captures dynamically a sample of the fluid mix and provides a highly accurate measurement of total mixture density, Gas Volume Fraction (GVF), and liquids mixture only density from which the Water Cut (WC) is derived. The principal measurands of the device are phase fractions GVF and WC.

Abstract: A multiphase flowmeter, and a method of analyzing and measuring multiphase flow is described. The multiphase flowmeter includes a combination 3 flow elements where a pressure differential is measured. The disclosed multiphase flowmeter relies on pressure differential measurements, however it does not rely on a specific method of generating these measureable pressure differentials in each of the flow elements. The pressure differentials can be caused by a variety of means such as a flow obstruction within the flow element. The meter also has a pressure transmitter which measures the in-pipe pressure and a temperature sensor which measures the fluids' temperature. From the signals obtained from the above sensors, an overall analysis of the multiphase fluid flow is performed providing a complete set of flow measurement data for a fluid mixture composed of 3 phases, which 3 phases may be oil, water and gas, or in the case of a wet gas application, gas, gas condensate and water.