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根据检查井密闭取心资料、生产井测井资料以及油藏数值模拟资料,对大庆长垣外围油田剩余油类型及分布特征进行研究。结果表明,该油田剩余油类型包括注采不完善型、井网控制不住型、油层物性差型、微型构造型、断层遮挡型、单向受效型和未射孔型;大型曲流河道砂体剩余油主要存在于尖灭区附近、废弃河道、河间砂及侧积夹层顶部;分流河道剩余油主要存在于河道的突出部位及河道边部的薄差层中;三角洲前缘席状砂体剩余油主要存在于河口区或离湖岸线较远的地区的薄差层中。
Based on the closed well coring data of well, well log data and reservoir numerical simulation data, the remaining oil types and distribution characteristics in the peripheral oil field of Daqing Plains were studied. The results show that the residual oil types in this oilfield include imperfect injection and production, uncontrollable well pattern, poor physical property of oil layer, mini structural type, fault occlusion type, unidirectional effective type and non-perforated type; Remaining oil in the sand body mainly exists in the vicinity of the pinnacle zone, abandoned river channel, inter-river sand and the top of the lateral mezzanine. The remaining oil in the distributary channel mainly exists in the prominent part of the channel and in the thin difference layer on the edge of the channel. The remaining oil in the sand body mainly exists in the thin layer in the estuary area or in the area far away from the lake shoreline.