地质科技情报2018，Vol.37Issue(3)：248-252,5.DOI:10.19509/j.cnki.dzkq.2018.0333
基于紊流条件下的气井临界携液流量计算模型
A New Model for Continuous Liquid-Carrying Critical Flow Rate of Gas Wells in Turbulence Flow
摘要
Abstract
Current popular models for calculating continuous liquid-carrying critical flow rate are established based on vertical wells and laminar flow without considering the influences of deviation angle and Reynolds number on liquid-carrying.With the increasing turbulent fluid in more and more directional wells, the current popular models cannot accurately predict the continuous liquid-carrying critical flow rate of these wells.In order to solve the problem, we firstly conducted the force analysis of the liquid drop in directional wells and then established a mathematic model between Reynolds number and drag coefficient in the turbulent fluid obtained by nonlinear regression.At last, we rebuilt a new model to predict continuous liquid-carrying critical flow rate for directional gas wells in turbulent fluid and gave the correction coefficient table.The practical calculation analysis indicates that the calculation error of this new model is less than 10％, with the accuracy 10.416％-66.125％ higher than those of current popular models.This shows that the continuous liquid-carrying critical flow rate of directional gas wells in turbulent fluid can be predicted accurately by using this new model, which can be used to enhance gas recovery.关键词
临界携液流量/非线性拟合/定向气井/液滴模型/紊流Key words
continuous liquid-carrying critical flow rate/nonlinear fitting/directional gas well/droplet model/turbulence flow分类
能源科技引用本文复制引用
明瑞卿,贺会群,胡强法..基于紊流条件下的气井临界携液流量计算模型[J].地质科技情报,2018,37(3):248-252,5.基金项目
国家科技重大专项"深层连续管作业技术与装备"(2016ZX05023-006) （2016ZX05023-006）
中国石油集团工程技术研究院有限公司科研项目"连续管作业综合软件开发"(2015F-2001-01) （2015F-2001-01）
