川西积液水平井井筒压力及液位预测

正确预测积液水平井井筒压力与液位是优选排液工艺、制定排液参数的技术关键。基于U型管原理，结合流体静力学与动力学方程，建立了积液水平井油管与油套环空压力平衡模型。模型中油管压降来源于液位以上流动气体与液位以下的两相流动，其两相流持液率基于漂移模型得到；油套环空压降则来源于液位以上的静气柱压力和液位以下的静液柱压力；油管与油套环空压力在井下连通点处相等；模型计算采用了先借助地面回声仪获得油套环空中的液位，再利用模型求解油管液位及压力的方法。川西气田什邡6-1HF水平井的模型预测压力与实际测压数据的误差为3.75%，表明该方法能够正确预测川西气田积液水平井的井筒压力与积液液位，且预测时效优于传统的测...

Full description

Saved in:
Bibliographic Details
Published in石油钻采工艺 Vol. 39; no. 1; pp. 97 - 102
Main Author 刘通;郭新江;王雨生;陈海龙;鲁光亮;唐勇
Format Journal Article
LanguageChinese
Published 中国石化西南油气分公司石油工程技术研究院%中国石化西南油气分公司石油工程技术研究院%中国石化西南油气分公司川西采气厂 2017
中国石化西南油气分公司博士后工作站
Subjects
川西气田;水平井;积液;井筒压力;液位;漂移模型;回声仪
horizontal well
川西气田
West Sichuan Gasfield
drift model
回声仪
borehole pressure
积液
漂移模型
echometer
液位
水平井
liquid loading
liquid level
井筒压力
Online AccessGet full text
ISSN1000-7393
DOI10.13639/j.odpt.2017.01.019

Cover

More Information
Summary:正确预测积液水平井井筒压力与液位是优选排液工艺、制定排液参数的技术关键。基于U型管原理，结合流体静力学与动力学方程，建立了积液水平井油管与油套环空压力平衡模型。模型中油管压降来源于液位以上流动气体与液位以下的两相流动，其两相流持液率基于漂移模型得到；油套环空压降则来源于液位以上的静气柱压力和液位以下的静液柱压力；油管与油套环空压力在井下连通点处相等；模型计算采用了先借助地面回声仪获得油套环空中的液位，再利用模型求解油管液位及压力的方法。川西气田什邡6-1HF水平井的模型预测压力与实际测压数据的误差为3.75%，表明该方法能够正确预测川西气田积液水平井的井筒压力与积液液位，且预测时效优于传统的测压方法。影响因素分析表明，油管液位通常高于环空液位，油套压差的减少能够间接反映油管积液量的减少，为类似油田的开发提供技术指导。
Bibliography:West Sichuan Gasfield; horizontal well; liquid loading; borehole pressure; liquid level; drift model; echometer
The technical key to drainage technology optimization and drainage parameter determination is to predict accurately theborehole pressure and liquid level of liquid-loading horizontal wells.The pressure balance model of tubing and tubing-casing annulus inliquid-loading horizontal well was developed based on the U-shape pipe principle by using fluid statics and dynamics equations.In thismodel,the tubing pressure drop is derived from the flowing gas above the liquid level and the two-phase flowing below the liquid level,and the two-phase liquid holdup is basically obtained from the drift model.The tubing-casing annulus pressure drop is derived from thestatic gas column pressure above the liquid level and the static liquid column pressure below the liquid level.The tubing pressure andthe tubing-casing annulus pressure are equal at downhole connecting points.However,two liquid level parameters cannot be s
ISSN:1000-7393
DOI:10.13639/j.odpt.2017.01.019