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纯化油田以复杂断裂、低渗透、薄互层为其显著地质特征,其断裂的复杂性在济阳坳陷具有典型性;油田的地质特征决定了其开发中的主要矛盾为平面与层间矛盾。开发37年来,以两大矛盾为主线、以早期构造模型和精细构造模型为基础、增储上产为核心,先后进行了弹性开发、注水开发、加密完善、分层开采、滚动探边、零星完善及注采结构调整等系统工程,取得了年产油持续稳定上台阶、“七五”末年产油达到40万t以上、“八五”期稳产并“九五”持续稳产的效果;由此很好地解决了油田平面矛盾并缓解了层间矛盾,在复杂断裂、低渗透、薄互层油田开发中效果突出;尤其是伴随着纯化油田新建的构造模型,极富创新性的油田剩余油新观点,对于纯化油田的精细开发起到了拓展作用;表现为该油田“八五”期末面临基本无井可打、产量即将下滑的严峻形势下,发现了钻探新阵地,阶段新钻井200余口、累计产油90余万t,相当于新增一中小型油田产能。由此立足于纯化复杂地质体特征所决定的两大矛盾为主线、以先后建立的两构造模型为基础、增储上产为中心的开发模式,在陆上东部老油田中具有很好的典范作用。
The complicated fractures, low permeability and thin interbed are the significant geological features of the purified oilfield. The complexity of the fractures is typical in the Jiyang Depression. The geological characteristics of the oilfield determine that the main contradictions in the development are the contradiction between the plane and the interlayer . For the past 37 years since its establishment, based on the two contradictions, based on the early tectonic model and the fine tectonic model, the Bank focused on increasing production and increasing production, successively developed flexible development, waterflooding development, improved encryption, layered mining, scouring and edge exploration, sporadic Perfecting and structural adjustment of injection and production systems, and achieved annual production of oil to maintain a stable level, “” “oil production reached 40 million t in the last year, ” 85 “period of stable production and” 95 “ Which has solved the plane contradictions in the oilfield and relieved the contradictions between the layers well. In the complex fracturing, low permeability and thin interbedded reservoirs, the effect is prominent. Especially with the new structural model of the purified oilfield, Innovative new ideas of remaining oil in the oilfield have played an expanding role in the fine development of the purified oilfield. The performance of this oilfield is that at the end of the ”85th" period, it is found that under the grim situation that basic wells can not be hit and output is about to decline, New positions, more than 200 new drilling stage, a total of more than 90 million t oil production, equivalent to an additional small and mid-sized oilfield capacity. Based on the two major contradictions determined by the characteristics of the purified complex geological body, the development model based on the two constructed models established in the past and the storage-production-centered development model has a good example in the old onshore oil fields effect.