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纯化油田作为纯梁采油厂主力油田之一,自1965开始钻探通5井发现,1971年投入全面开发以来,截止2010年底已开发40年,完钻各类开发井近1000口,累积产油1395万吨,标定采收率23.8%,目前已进入高含水、高采出程度的中后期开发阶段,主力油层射开程度高达90%以上,面临着老区产能阵地少、剩余油分布零散,措施挖潜难度大的不利局面,年产油量一度由八五、九五期间的40万吨下降到近年来的28万吨,虽然通过精细油藏单元目标化管理、区块水井长效治理、老区一体化治理等措施,油田老井自然递减有所减缓,但由于新区及措施阵地逐年减少,油田年总递减率平均在13.5%以上,为改善油田开发效果,我们对该油田在开展多轮次精细油藏研究,重建地质模型,深入研究剩余油分布规律的同时,引进国内外目前先进的监测、工艺增产技术手段来指导纯化油田的后期合理高效开发,在油田措施挖潜及停产井的治理工作上见到良好的效果,并将大型压裂、纯4-5组压裂技术推广到老区层间挖潜的开发上来,实现了油田的可持续稳定开发。
As one of the main oilfields of pure beam oil production plant, the purified oilfield has been drilled through Well 5 since 1965. Since it was put into full development in 1971, it has been developed for 40 years by the end of 2010 and has completed nearly 1000 wells of all kinds and has accumulated oil production of 1395 Tons of tons, the standard recovery rate of 23.8%, has now entered the high water cut, high recovery in the late development stage, the main oil level shot up to 90% above the face of the old area production capacity less scattered residual oil, tap the potential Difficult for the adverse situation, the annual oil production once fell from 85,000 tons in 1985 to 95,000 tons in recent years, 280,000 tons, although the goal of fine reservoir unit management, long-term management of block wells, the old one The natural decrement of oilfield old wells has slowed down. However, as the new areas and measure positions decrease year by year, the total annual decline rate of oilfields averages above 13.5%. In order to improve the oilfield development effect, Reservoir research, reconstruction of geological models, in-depth study of the distribution of remaining oil at the same time, the introduction of advanced monitoring at home and abroad, technology production technology to guide the rational development of the post-rational purification of oil fields in the oil field Measures to tap the potential wells and wells to work well to see good results, and large fracturing, pure 4-5 group fracturing technology to promote the development of the potential development of the old layer up, to achieve a sustainable and stable development of the oil field.