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Title: Helical Turbine Meters For Liquid Measurement
Author: Glen Wilson
Source: 2007 International School of Hydrocarbon Measurement
Year Published: 2007
Abstract: The oil industry has used conventional turbine meters and positive displacement (PD) meters in the custody transfer measurement (CTM) of crude oil and refined products for more than 6 decades. The choice of which meter to use depends on the product being measured, technical parameters of the application, total cost of meter ownership, and the accuracy required. Conventional turbine meters have typically been used in low viscosity refined products, with limited use in moderate to high viscosity crude oil due to performance limitations. The capillary seal positive displacement meter has been the choice for custody transfer measurement of moderate to high viscosity crude oil, providing good measurement but at a high total cost of ownership. Today, a new iteration of the turbine flowmeter is available to meet the necessity for accurate CTM in either a single product or a multiple products application, performing within the API guidelines for CTM at the measurement site. The Dual Bladed Helical Turbine Meter is designed for the measurement applications which have typically been divided between conventional turbine meters and positive displacement meters. This uniquely designed turbine flow meter provides highly accurate custody transfer measurement in applications ranging from very low viscosity products such as LPGs, to heavy crude oil (standard applications to 500 cSt., special applications to 1000 cSt)

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