凝析气单井吞吐采油注采参数优化设计

摘要

凝析气单井吞吐可以有效提高油田采收率,因此对凝析气单井吞吐采油注采参数的优化具有重要的生产指导意义。根据对国外B油藏实例井凝析气吞吐效果的研究,建立了组分模拟数值模型,并应用数值模拟方法,分析了凝析气周期注入量、周期注入速度、焖井时间及采液速度对凝析气单井吞吐累积增产油量与换油率的影响。并在此基础上,应用正交实验设计方法,对凝析气单井吞吐采油注采参数进行了整体优化设计,最终得到该区块最优采油注采参数：注入量为283.2×104m3,注入速度为11.3×104m3/d,焖井时间为10d,生产井产液速度为1590m3/d。%Single well condensate gas huff and puff can improve oilfield recovery ratio greatly,so the injection-production parameters optimization in single well condensate gas huff and puff has important production guiding significance.Based on the study of the effect of single well condensate gas puff and huff in reservoir B,this paper established the compositional simulation model,and analyzed the influencing factors to single well condensate gas huff and puff,including condensate gas cycle injection volume,injection rate,well shut-in time and production rate.The injection-production parameters of single well condensate gas huff and puff were optimized with the orthogonal experiment design method.The optimized injection-production parameters are as the following:the injection volume is 283.2×104 m3,injection rate is 11.3×104 m3/d,well shut-in time is 10d and production rate is 1 590 m3/d.