特种油气藏2017，Vol.24Issue(3)：64-69,6.DOI:10.3969/j.issn.1006-6535.2017.03.012
稠油油藏蒸汽吞吐产能预测新模型
A New Productivity Prediction Model for Heavy Oil Reservoirs in the Development Pattern of Steam Huff and Puff
摘要
Abstract
In this paper, the effective drainage theory on heavy oil reservoirs was introduced to deal with the non-Darcy flow characteristics of heavy oil.Zoning was carried out according to the flow regimes of fluids around wellbores in the process of steam huff and puff.By virtue of equivalent flowing resistance method, the productivity prediction formulas for vertical wells and horizontal wells in the development pattern of steam huff and puff were derived by taking into consideration the pseudo threshold pressure gradient.Then, the effects of production pressure difference, pseudo threshold pressure gradient, development mode and development well type on the effective drainage area and productivity of heavy oil reservoirs were analyzed based on numerical calculation.It is indicated that with the increasing of production pressure difference, the effective drainage radius of oil reservoir increases to a stable value and the daily oil production declines gradually.With the increasing of pseudo threshold pressure gradient, the effective drainage radius and the daily oil production decreases gradually and decreasing amplitude of effective drainage radius gets gentle gradually.The effect of pseudo threshold pressure gradient on natural energy and steam huff and puff shall not be neglected and its effect on the latter is more.The productivity of vertical wells and horizontal wells decreases with the increasing of pseudo threshold pressure gradient, and the productivity decline amplitude of horizontal wells is higher.The research results provide the theoretical basis for the accurate productivity evaluation of oil wells on site and the rational selection of development plans.关键词
稠油油藏/拟启动压力梯度/蒸汽吞吐/产能预测/有效动用半径Key words
heavy oil reservoir/pseudo threshold pressure gradient/steam huff and puff/productivity prediction/effective drainage radius分类
能源科技引用本文复制引用
朱维耀,李兵兵,翟勇,刘雅静,岳明..稠油油藏蒸汽吞吐产能预测新模型[J].特种油气藏,2017,24(3):64-69,6.基金项目
国家自然科学基金"多孔介质中细观剩余油成因与流动动力学机制研究"(11372033) （11372033）
中央高校基本科研业务费专项资金资助项目"薄层稠油油藏径向井压裂防砂裂缝延伸扩展规律研究"(FRF-TP-15-043A1) （FRF-TP-15-043A1）
