大庆石油地质与开发2017，Vol.36Issue(2)：117-122,6.DOI:10.3969/J.ISSN.1000-3754.2017.02.020
稠油油藏注过热蒸汽加热半径计算新模型
NEW CALCULATING MODEL OF THE HEATED RADIUS FOR THE SUPERHEATED STEAM INJECTION IN HEAVY OIL RESERVOIRS
摘要
Abstract
After injecting the superheated steam into the oil reservoir,the following phase change process occurs:from superheated steam transforming into wet steam and hot water,and the superheated zone,steam zone and hot water zone are generated in the heated area.Therefore,the traditional heated-radius calculating models on the basis of the common wet steam injection are not applicable any more.In order to accurately calculate the heated radius during the superheated steam injection,combining with the actual formed temperature distribution of the oil layers in the process of the superheated steam injection,and moreover with the help of the instantaneous energy conservation principle,a new heated radius calculating model was established for the superheated steam injection of the heavy oil reservoir.The results show that there is much better coincidence for the calculated results between the new model and CMG STARS numerical simulation,the maximum relative error is 7.4％,thus the correctness of this model is verified;although the increase of the steam superheat degree at the bottom of the well has no significant impact on enlarging the heated block,it can effectively expand the radius of superheated zone nearby the borehole.关键词
稠油/过热蒸汽/过热度/加热半径/非等温模型Key words
heavy oil/superheated steam/superheat degree/heated radius/non-isothermal model分类
能源科技引用本文复制引用
何聪鸽,许安著,范子菲,曾保全,冀中原..稠油油藏注过热蒸汽加热半径计算新模型[J].大庆石油地质与开发,2017,36(2):117-122,6.基金项目
中国石油集团公司重大科技专项“中国石油海外油气上产2×108t开发关键技术研究”(2011E-2504). （2011E-2504）
