六东区克下组砾岩油藏精细描述研究

Fine description of conglomerate reservoir in Kexia formation of Liudong area

六东区克下组油藏是克拉玛依油田早期注水开发的Ⅲ类砾岩油藏 ,经历了冷采、注水、蒸汽吞吐和蒸汽驱等不同开采阶段 ,为新疆油田重要的热采生产区块。本次从该油藏静态研究入手 ,结合动态开采特征 ,对构造特征、地层特征、沉积微相及储层特征分布等进行描述 ,精细刻画油层非均质性以及油、汽、水分布特征 ,建立三维地质模型 ,为全面认识评价油藏、数值模拟及开发调整跟踪研究提供了依据和技术保障。

Reservoirs in Kexia formation of Liudong area belong to the III type of conglomerate reservoirs,which had been developed by water flooding in early period in Karamay oilfield.These rese rvoirs had experienced different recovery stages,including cold recovery,water injection,cyclic steam stimulation and steam drive,and this is an important thermal recovery block of Xinjiang oilfield.This study starts with static research,combining dynamic producing performance,describes structural feature,stratigraphic feature,sedimentary subfaeies and reservoir feature distribution.Reservoir heterogeneity and oil,gas and water distribution are described in detail.A three dimensional geological model has been established.This study has provided basis and technical guarantee for reservoir full-scale evaluation,numerical simulation,and development adjustment.