稠油油藏热溶剂辅助重力泄油开采机理及参数优化
Mechanism and Parameter Optimization of Thermal Solvent-Assisted Gravity Drainage Oil Recovery in Heavy Oil Reservoirs
李松岩 1程浩 1韩瑞 2魏耀辉 1李明鹤 1冯世博1
作者信息
- 1. 中国石油大学(华东)非常规油气开发教育部重点实验室,山东 青岛 266580;中国石油大学(华东),山东 青岛 266580
- 2. 中海油田服务股份有限公司,天津 300459
- 折叠
摘要
针对稠油油藏开采过程中存在的热损失大、含水率高及开发效率低等问题,以加拿大Mackay River油藏为研究对象,建立了热溶剂辅助重力泄油技术的数值模拟模型,分别对SAGD、VAPEX和热溶剂辅助重力泄油开采特征进行对比,对热溶剂辅助重力泄油开采技术的生产压力、注入速度和注入温度进行参数优化.研究结果表明:热溶剂辅助重力泄油技术在注采压差、采油速度和采收率方面优于SAGD与VAPEX技术;在实际开发过程中,热溶剂辅助重力泄油技术的最佳应用条件为:井底生产压力为 700 kPa,注入速度为 160 m3/d,注入温度为275℃;三维实验结果进一步验证了数值模拟运算结果的可行性.该研究可为后续浅层稠油油藏的高效开发提供借鉴.
Abstract
There are significant heat loss,high water cut,and poor development effects during the recovery process of heavy oil reservoirs.Taking the Mackay River Reservoir in Canada as the research object,the numerical simula-tion model of hot solvent-assisted gravity drainage technology was constructed,and characteristics of SAGD,VAPEX,and hot solvent-assisted gravity drainage recovery were compared.The parameters are optimized for pro-duction pressures,injection rates,and injection temperatures of hot solvents.The results show that the hot solvent-assisted gravity drainage technology is better than SAGD and VAPEX in terms of injection and production differenti-al pressure,oil recovery,and oil recovery rate;in the actual development process,the optimal conditions for the application of hot solvent-assisted gravity drainage technology are as follows:the bottomhole production pressure is 700 kPa,the injection rate is 160 m3/d,and the injection temperature is 275℃.The results of the three-dimen-sional experiments further validate the results of the numerical simulation calculations.This study provides a refer-ence for efficiently developing shallow heavy oil reservoirs.
关键词
稠油开采/重力泄油/参数优化/数值模拟/提高采收率Key words
heavy oil recovery/gravity drainage/parameter optimization/numerical simulation/enhanced oil re-covery引用本文复制引用
基金项目
国家自然科学基金企业创新发展联合基金(U20B6003)
出版年
2024
国家科技期刊平台
NSTL
万方数据