基于液膜反转的定向井临界携液模型研究

doi:10.13809/j.cnki.cn32-1825/te.2024.01.020

油气藏评价与开发 ›› 2024, Vol. 14 ›› Issue (1): 151-158.doi: 10.13809/j.cnki.cn32-1825/te.2024.01.020

• 综合研究 • 上一篇

基于液膜反转的定向井临界携液模型研究

于相东¹(),石书强²(),李国良¹,房金伟¹,段传丽¹,齐丹¹

1.中国石油渤海钻探工程公司油气合作开发分公司，天津 300457
2.重庆科技大学石油与天然气工程学院，重庆401331

收稿日期:2023-08-17 发布日期:2024-03-05 出版日期:2024-02-26
通讯作者: 石书强(1990—)，男，博士，讲师，主要从事排水采气理论与技术研究。地址：重庆市沙坪坝区大学城东路20号，邮政编码：401331。E-mail：420247426@qq.com
作者简介:于相东（1981—），男，本科，高级工程师，主要从事油气田开发工作。地址：内蒙古鄂尔多斯市乌审旗鸿沁路苏里格生产指挥中心，邮政编码：017300。E-mail: yuxiangdong@cnpc.com.cn
基金资助:
重庆市教委科学技术研究项目——青年项目“超深井注天然气-水两相流流动规律及压力模型研究”(KJQN202301527);重庆市教委科学技术研究项目——青年项目“深层页岩气水平井泡沫携液规律及泡排使用界限研究”(KJQN202101542);渤海钻探2022年博士创新基金项目“低渗致密气藏大斜度井携液机理及数学模型研究”(2022BC75F)

Research on critical liquid loading model for directional wells based on liquid film inversion

YU Xiangdong¹(),SHI Shuqiang²(),LI Guoliang¹,FANG Jinwei¹,DUAN Chuanli¹,QI Dan¹

1. Oil & Gas Cooperation and Development Company, CNPC Bohai Drilling Engineering Company Limited, Tianjing 300457, China
2. School of Petroleum Engineering, Chongqing University of Science & Technology, Chongqing 401331, China

Received:2023-08-17 Online:2024-03-05 Published:2024-02-26

摘要/Abstract

摘要：

气井积液是苏里格区块大斜井开采中后期面临的一个重要难题，目前适用于定向井的临界携液模型研究较少，且常用携液模型忽略了管径、液体流速和角度的影响。借助多相管流实验开展了定向井携液机理实验，分析了管径、角度、液体流速等因素对气井积液的影响规律，并根据液膜反转机理，在BELFROID模型和WALLIS模型基础上，利用实验数据拟合出了WALLIS模型中参数C和m的计算方法，并考虑管径、气体密度、液体密度、角度、液体表观流速、重力加速度等参数，建立了新的临界携液模型，新模型在预测VEEKEN文献中62口积液气井时结果显示，准确率为91.94%，新模型的建立不仅是液膜反转理论的进一步完善，同时也为定向井积液时机的预测提供理论支撑。

关键词: 定向井, 积液, 管径, 携液模型, 积液时机

Abstract:

Liquid loading in gas wells is an important challenge during the middle and later stages of exploitation of large inclined wells in Sulige Block. Current critical liquid carrying models suitable for directional wells are limited and often overlook the effects of tubing diameter, liquid flow velocity, and angle. Utilizing multiphase pipe flow experiments, the liquid carrying mechanism in directional wells was studied, analyzing the effects of tubing diameter, angle, and liquid flow velocity on liquid accumulation in gas wells. Based on the liquid film reversal mechanism, the calculation method of parameters C and m in the WALLIS model was derived using experimental data on the basis of the BELFROID model and WALLIS model. A new critical liquid-carrying model has been established by considering the factors such as pipe diameter, gas density, liquid density, angle, apparent liquid flow rate, and gravitational acceleration. The results of the new model for predicting 62 gas wells with liquid loading in VEEKEN’s literature show an accuracy of 91.94%. The establishment of this new model not only further refines the theory of liquid film reversal but also provides theoretical support for predicting liquid loading events in directional wells, offering a valuable tool for optimizing gas production and mitigating liquid loading issues.

Key words: directional well, liquid loading, pipe diameter, liquid-carrying model, time of liquid loading

中图分类号:

TE35

于相东,石书强,李国良等. 基于液膜反转的定向井临界携液模型研究[J]. 油气藏评价与开发, 2024, 14(1): 151-158.

Xiangdong YU,Shuqiang SHI,Guoliang LI, et al. Research on critical liquid loading model for directional wells based on liquid film inversion[J]. Petroleum Reservoir Evaluation and Development, 2024, 14(1): 151-158.

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井型	模型	模型原理及特点	模型考虑参数
直井	TURNER	圆形球体，曳力系数0.44，经典模型	σ、ρ_g、ρ_l
	COLEMAN	圆形球体，曳力系数0.44，井口	σ、ρ_g、ρ_l
	李闽	椭球体，曳力系数1，井口	σ、ρ_g、ρ_l
	杨川东	圆形球体，曳力系数0.44，井底，安全系数1	σ、ρ_g、ρ_l、μ_g
	王毅忠	球帽状，曳力系数1.17	σ、ρ_g、ρ_l
	王志彬	椭球体	σ、ρ_g、ρ_l、C_d、K、We
	潘杰	椭球体，考虑液滴形变和界面自由能	σ、ρ_g、ρ_l、C_d、K
	熊钰	椭球形，C_d采用G_p模型	σ、ρ_g、ρ_l、C_d、K、We
	周德胜	多液滴模型	σ、ρ_g、ρ_l、H_l
	WALLIS	液膜模型	σ、ρ_g、ρ_l
水平井	BELFROID	在液滴模型基础上进行了修正，提出了液膜反转思想	σ、ρ_g、ρ_l、θ
	BARNEA	提出液膜均匀分布的环状流转换边界，机理模型
	SHI	球帽型	g、ρ_g、ρ_l、θ、f_i
	李丽	考虑了雷诺数的影响	σ、ρ_g、ρ_l、C_d、Re

基于液膜反转的定向井临界携液模型研究

Research on critical liquid loading model for directional wells based on liquid film inversion

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