摘要
针对史103井区存在注采井距大、油水井压力传导困难、地层压力保持水平低以及油井见效率低等问题,从体积波及系数、采收率、经济效益等方面对加密调整可行性进行了充分论证,确定了合理的井距和井网密度,优选了加密调整方案。现场实施后,日产油增加40.5 t,自然递减由8.2%下降为3.3%,可采储量增加5.2×104t,水驱采收率由23.6%提高到24.9%,水驱开发效果明显,同时也为同类油藏的调整提供了借鉴。
Well block Shi103 has problems like large injection-production spacing,pressure conductivity difficulty between oil and water wells,low formation pressure and low oil well efficiency.The feasibility of infill adjustment has been demonstrated in aspects of volumetric sweep efficiency,recovery factor and economic benefit to determine rational well spacing and pattern density and to optimize adjustment plan.After field implementation,daily oil production has increased by 40.5 t,natural decline reduced from 8.2% to 3.3%,recoverable reserves increase 5.2×10~4t,and the recovery factor of water drive improves from 23.6% to 24.9%.This provides a reference to the adjustment in similar reservoirs.
出处
《特种油气藏》
CAS
CSCD
2006年第3期60-62,共3页
Special Oil & Gas Reservoirs
基金
中石化胜利油田有限公司先导试验项目"史103井区井网加密研究"资助(项目编号:SO-PF0541D010X)
关键词
低渗透油藏
井网加密
注采井距
试验研究
优化设计
史103井区
low permeability reservoir
pattern infill
injection-production spacing
test study
optimization
well block Shi103
