特种油气藏2024，Vol.31Issue(6)：77-83,7.DOI:10.3969/j.issn.1006-6535.2024.06.009
浅层超稠油油藏双水平井SAGD电加热预热启动参数优化设计与矿场试验
Optimization Design and Field Test of SAGD Electric Heating Preheating Start-up Parameters for Double Horizontal Wells in Shallow Super-Heavy Oil Reservoirs
摘要
Abstract
Due to the large fluctuation of pressure difference between injection and production wells during the pre-heating and start-up process of SAGD steam injection cycle in continental heterogeneous ultra-heavy oil reservoirs in Xinjiang Oilfield,it is difficult to control on site.Steam is easy to enter the oil layer of high permeability horizon-tal section,which is easy to cause local preferential connection or steam channeling in horizontal section.The devel-opment of steam chamber is not balanced,which leads to the low utilization degree of horizontal section,thus affect-ing the production effect of SAGD.Therefore,the development method of putting electric heaters into the horizontal section of SAGD in double horizontal wells is proposed.The oil layer between injection and production wells is uni-formly heated by the principle of heat conduction,and the key operation parameters of SAGD electric heating pre-heating start-up are optimized,including SAGD electric heating start-up wellbore pretreatment,fluid replacement cycle operation parameters and SAGD production time.The SAGD electric heating preheating start-up operation process is formed.SAGD electric heating preheating start-up field test was carried out in the shallow ultra-heavy oil double horizontal well of FHW01TW Well Group in Chong A Well Area of Xinjiang Oilfield.The preheating startup time was reduced from 320 days to 163 days,3.79×104 t steam was saved and 4 846.6 t CO2 emission was re-duced.This technology will become one of the important means to reduce CO2 emission in SAGD development of shallow double horizontal wells.关键词
SAGD/电加热/预热启动/超稠油/新疆油田Key words
SAGD/electrical heating/preheating start-up/super-heavy oil/Xinjiang Oilfield分类
能源科技引用本文复制引用
何万军,孙新革,吴永彬,罗池辉,郭昊,张基朋,李淑娴..浅层超稠油油藏双水平井SAGD电加热预热启动参数优化设计与矿场试验[J].特种油气藏,2024,31(6):77-83,7.基金项目
中国石油科学研究与技术开发项目"稠油提高采收率关键技术研究——井下大功率电加热器研制"(2022DJ1409) （2022DJ1409）
