摘要
依据水平井渗流特点,将水平井渗流区域分为一个长方体和两个半圆柱体,再根据能量守恒及达西定律,考虑了气藏与水平井筒的耦合作用以及井筒内的压力损失,建立了气藏水平井产能预测新模型。分析了水平井筒内的压力和流量的变化,与考虑井筒压降的Joshi模型进行了对比,新模型计算结果与实际测量结果误差最小。影响因素分析表明,该模型在高渗透率、长井筒和小井径的情况下更为有效。
According to the characteristics of flowing through porous media,the flowing region of horizontal well is divided into a rectangular and two semi-cylindrical areas,the new model for predicting horizontal well deliverability in gas reservoir is established by considering the coupling of gas reservoir and horizontal wellbore and the pressure drop in the wellbore,as well as the law of conservation of energy and Darcy′s law.The change of pressure and flow amount in wellbore is analyzed,the comparison with Joshi model which considers pressure drop in wellbore is carried out,the error between computering result with the model and practically measured result is least.The result indicates the model is reliable to the situation of high permeability,long wellbore and slim wellbore.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第2期118-122,共5页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
中国石化资助项目"大牛地气田大12
大66
大8
大17井区开发方案气藏工程研究"(G1303-08-KK-030)
关键词
水平井产能
产能预测
计算模型
井筒压降
气藏水平井
horizontal well deliverability
deliverability prediction
computering model
wellbore pressure drop
horizontal gas well
作者简介
作者简介：王树平（1978-），男（汉铁），黑龙江海伦人，博士，从事气藏工程方面的研究。
