石油勘探与开发2012，Vol.39Issue(2)：214-221,8.
非均质油藏水平井分段变密度射孔优化模型
Segmentally variable density perforation optimization model for horizontal wells in heterogeneous reservoirs
摘要
Abstract
A 3D three-phase segmentally variable density perforation optimization model of horizontal wells is built by coupling reservoir fluid filtration, near wellbore inflow and wellbore conduit flow based on reservoir numerical simulation. The effects of 8 factors (filtration difference between heel/toe and middle intervals, imperforated interval, permeability heterogeneity, oil layer thickness heterogeneity, porosity heterogeneity, wellbore pressure drawdown, maximum perforation density, and perforation optimization principles) on perforation density and inflow profile, and that of fluid viscosity, casing diameter and pipe wall coarseness on well bore pressure drawdown, are analyzed for segmentally variable density perforation of horizontal wells. Results show that filtration difference between heel/toe and middle intervals, imperforated interval, permeability heterogeneity and oil layer thickness heterogeneity have significant effects on segmentally variable density perforation. In particular, different perforation density optimizations may occur when filtration difference between heel/toe and middle interval is not considered; imperforated interval may affect inflow profile; well bore pressure drawdown can be ruled out for segmentally variable density perforation of most horizontal wells onshore in China. The contrast between predicted and actual production of Well AT9-7H in the Tahe Oilfield indicates that the model is highly accurate.关键词
水平井/分段变密度射孔/油藏数值模拟/避射段/入流剖面/非均质Key words
horizontal well/ segmentally variable density perforation/ reservoir numerical simulation/ imperforated interval/ inflow profile/ heterogeneity分类
能源科技引用本文复制引用
庞伟,陈德春,张仲平,姜立富,李昌恒,赵旭,王冰..非均质油藏水平井分段变密度射孔优化模型[J].石油勘探与开发,2012,39(2):214-221,8.基金项目
中国石油化工股份有限公司胜利油田分公司项目“水平井完井技术参数敏感性研究”(57-2008-js-00040) （57-2008-js-00040）
中国石油化工股份有限公司石油工程管理部项目“塔河油田碎屑岩水平井完井技术先导试验”(SG1012) （SG1012）
