中文摘要：

引言 近30年来，油气田开发的主体从陆上转移到自然条件相对恶劣的海上和沙漠，从大型集中分布的油气田转向小型边际以及卫星油气田。油气水混相输送、多相计量等技术逐渐成为影响石油与天然气工业未来发展的关键技术。

英文摘要：

The slotted-orifice is a new type of flow sensor for gas-liquid two-phase flow measurement, and there is no correlation of two phase multipliers for the slotted-orifice available. Based on the air-water two-phase flow experimental data of slotted orifice, five typical correlations of the standard throttle device were applied to the data, and the application range and the reason for error involved from these correlations were analyzed. Based on different modeling ideas, three new correlations, which include the Lockhart-Martinelli parameter, gas pressure and gas Froude number, were proposed and used in the study of metering technology of wet gas flow. The accuracy of new correlations can meet the gas industry demands for production based metering.