【摘要】 优选辽河油田锦45块构造发育较为完整的9个井组,将其作为Ⅱ类稠油油藏进行蒸汽驱先导试验。严格保证注汽质量,并强化提高采注比。经过1年多的汽驱生产,大多数油井明显收效。蒸汽腔正逐步延伸扩展,试验进入蒸汽有效驱替阶段,试验区日产液、日产油明显上升。同时,地层压力保持稳定,油层温度普遍上升,采注比、油汽比不断提高。试验初步证明:在锦45块Ⅱ类稠油藏实施蒸汽驱开发,在技术及经济上均是可行的。将为辽河油区1.8亿吨Ⅱ类稠油储量的汽驱开发起到重要指导和借鉴作用。更多还原

【Abstract】 9 well groups of Jin 45 is optimized in Liaohe Oilfield whose structural development are much completed as type Ⅱ heavy oil reservoir and do pilot test of steam flooding experiment.During the test,steam quality is guarantee ingected stricty and strengthen enhancing effective injection to production ratio.After production by steam flooding over 1 year,most oil wells were obviously affected.Steam chamber is getting to extend,and the test enter the effective displacing stage;the daily liquid rate and oil rate obviously increase in the test region,at the same time,formation pressure keep stable,oil layer temperature generally increase,production to injection ratio and oil to steam ratio continues increase.The test preliminary prove that it is feasible in technique and economic to implement steam flooding in the type Ⅱ heavy oil reservoir as Jin 45 Block.This will provide important instruction and references for the steam flooding in such type Ⅱ heavy oil reservoir with 1.8 × 108 t in Liaohe oil province.更多还原