石油钻采工艺2017，Vol.39Issue(5)：541-546,6.DOI:10.13639/j.odpt.2017.05.002
SAGD水平井启动阶段汽腔加热边界预测模型
A prediction model used for the heating boundary of steam chamber in the startup stage of SAGD horizontal well
摘要
Abstract
Steam assisted gravity drainage (SAGD) technology is divided into stages, i.e., startup stage and production stage. The quantitative calculation of steam chamber development boundary in the horizontal section in the SAGD startup stage is the important basis for discriminating the optimal beginning time of production stage. In this paper, the model used for calculating the heating radius of each temperature measurement point in the horizontal section was established by introducing the downhole temperature attenuation testing method on the basis of the SAGD startup process analysis and the heat conduction equation of steam heating reservoir. This model can be used to calculate the steam heating boundary along the horizontal section and discriminate the development morphology of steam chamber. Then, the bottom-hole temperature measurement data of a certain SAGD horizontal well in Xinjiang Oilfield was collected for study. The calculation results by this model were compared with the measured data. It is indicated that the quantitative calculation result by this model is in accordance with the qualitative discrimination result based on the measured data. The research results provide a new method for discriminating the conversion timing of SAGD production stage and monitoring the development homogeneity of steam chambers.关键词
SAGD/水平井/蒸汽腔/温度衰减/热扩散系数/加热边界/预测模型Key words
SAGD/horizontal well/steam chamber/temperature attenuation/thermal diffusivity/heating boundary/prediction model分类
能源科技引用本文复制引用
何小东,张磊,黄勇,杨洪,陈森..SAGD水平井启动阶段汽腔加热边界预测模型[J].石油钻采工艺,2017,39(5):541-546,6.基金项目
"十三五"国家科技重大专项"油砂高效开发与提高SAGD效果新技术研究与应用"(编号:2016ZX05031002). （编号:2016ZX05031002）
