中国石油大学学报（自然科学版）2013，Vol.37Issue(2)：67-70,4.DOI:10.3969/j.issn.1673-5005.2013.02.011
考虑启动压力梯度的低渗透油藏污染井压裂增产新模型
New fracture stimulation model considering starting pressure gradient for contaminated wells in low permeability reservoir
摘要
Abstract
Firstly, the productivity formula of vertical well was deduced considering single starting pressure gradient in low permeability reservoir. Then the changes of permeability and starting pressure gradient of contaminated zone and uncontami-nated zone after fracturing were analyzed. A new fracture stimulation model was established considering different starting pressure gradient in contaminated and uncontaminated zone for contaminated wells in low permeability reservoir. The results show that the starting pressure gradients of contaminated and uneonSanunated zone are of great difference, this production forecasting model of contaminated well is more consistent with the actual situation. The productivity considering two starting pressure gradients is lower than that without considering starting pressure gradient. The starting pressure gradient has less influence on fracturing wells.关键词
油藏/污染井/压裂/产能预测/启动压力梯度Key words
reservoir/ contaminated wells/ fracturing/ production prediction/ starting pressure gradient分类
能源科技引用本文复制引用
何勇明,李思民,张燕,张浩..考虑启动压力梯度的低渗透油藏污染井压裂增产新模型[J].中国石油大学学报（自然科学版）,2013,37(2):67-70,4.基金项目
国家自然科学基金项目(51104025) （51104025）
