气井气液两相管流压降计算模型评价与优选

发布时间：2018-04-16 02:08

本文选题：气液两相管流 + 压降　；参考：《断块油气田》2017年06期

【摘要】：目前工程上常用的气液两相管流压降计算模型建立的基础不同,其适用条件均具有一定的局限性。特别是含水气井,不同气水比时,气井井底流压计算结果差异大,影响气井生产动态分析和优化的准确性。鉴于此,文中整理了国内外102组气井生产实测数据,对8种常用气液两相管流压降模型进行评价与优选。结果表明:气水比大于2 441 m~3/m~3时,Hagedorn-Brown模型和Gray模型计算结果与实测数据最吻合,平均相对误差最小;气水比小于2 441 m~3/m~3时,Beggs-Brill模型计算结果与实测数据最吻合,平均相对误差最小。因此,气水比大于2 441 m~3/m~3的气井推荐使用Hagedorn-Brown模型或Gray模型计算,气水比小于2 441 m~3/m~3的气井推荐使用Beggs-Brill模型计算。
[Abstract]:At present, the pressure drop model of gas-liquid two-phase pipe which is commonly used in engineering is based on different foundation, and its applicable conditions are all limited to a certain extent.Especially in water-bearing gas wells, the calculation results of bottom flow pressure of gas wells vary greatly with different gas-water ratios, which affects the accuracy of performance analysis and optimization of gas wells.In view of this, 102 groups of gas well production data at home and abroad are collected, and 8 kinds of commonly used gas-liquid two-phase flow pressure drop models are evaluated and selected.The results show that the calculated results of Hagedorn-Brown model and Gray model have the best agreement with the measured data, and the average relative error is the smallest, and the calculation result of the gas-water ratio is less than 2 441 mg / m ~ 3 / m ~ 3. The calculated results of the Beggs-Brill model are the best agreement with the measured data, and the average relative error is the smallest.Therefore, Hagedorn-Brown model or Gray model is recommended for gas wells with gas-water ratio greater than 2 441 m~3/m~3, and Beggs-Brill model is recommended for gas wells with gas-water ratio less than 2 441 m~3/m~3.
【作者单位】：中国石油大学(华东)石油工程学院;中国石化中原油田分公司采油五厂;
【分类号】：TE37

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