西南石油大学学报（自然科学版）Issue(3)：25-30,6.DOI:10.11885/j.issn.16745086.2015.03.04.01
水平井分段酸化后表皮因子研究新方法
New Method to Study the Skin Factor of Horizontal Gas-well After Staged Acidizing
摘要
Abstract
Horizontal well staged acidizing with packer has been an important stimulation treatment to achieve uniform acidiz-ing in anisotropic reservoir,so the study of skin factor after staged acidizing is of great importance. Based on the elliptic damage zone near the horizontal gas well,the authors take by into consideration the uniform treatment by acids and influence of residual acid back flow on gas flow in the reservoir,and dividing the flow problem of composition area in elliptic damage zone into three flow problems in homogeneous region,taking advantage of resistance superposition theory,we eventually get a new method to calculate the skin factor of horizontal gas well after staged acidizing. The case study shows the local skin factor of horizontal gas well after staged acidizing becomes smaller from the heel to toe-end along the direction of wellbore;it also decreases with the increase of acidifying radius and permeability of acidizing zone,but increases with the increase of maximum immersion radius. The study in this paper will offer an new approach to the calculation of the skin factor of horizontal gas well after acidizing.关键词
水平气井/均匀酸化/表皮因子/均匀/残酸返排Key words
horizontal gas-well/staged acidizing/skin factor/uniform/residual acid back flow分类
能源科技引用本文复制引用
李晓平,晏宁平,袁淋,张烈辉..水平井分段酸化后表皮因子研究新方法[J].西南石油大学学报（自然科学版）,2015,(3):25-30,6.基金项目
国家杰出青年科学基金（51125019）。 （）
