摘要
为了确定边际油田储集层的分布和特征、有效开发海上边际油田,以渤海湾盆地Q33-1油田新近系明化镇组下段河流相储集层为例,综合地震、地质、测井等资料,研究边际油田河流相储集层表征关键技术。通过河流相砂体井震标定、三维地震精细解释和边界精细刻画,雕刻河流相储集层砂体外部形态,描述其内部非均质性;根据高分辨率三维地震资料,利用井点外推宽度法、变差函数分析法建立河流相储集层地质知识库;结合类比密井网油田储集层分布特征,提出了侧向相变对比模式、叠置砂体对比模式、河道下切对比模式等3种河流相储集层井间对比模式。综合以上3种储集层表征技术,确定了Q33-1油田储集层分布的最可能模式,并以此模式为依据设计油田开发方案,取得了较好的经济效益。
Fluvial reservoirs of the lower member of the Neogene Minghuazhen Formation in Q33-10ilfield, Bohai Bay Basin, are studied as examples to determine the distribution and characteristics of marginal reservoirs and develop offshore marginal oilfields effectively. Based on seismic, geological and logging data, three key technologies for the fluvial reservoir characterization of marginal reservoirs are proposed. The geometry and heterogeneity of fluvial sandbodies were studied through well-seismic calibration, 3D seismic interpretation and boundaries characterization. The geological knowledge database of fluvial reservoirs was established by the methods of width prediction outside wells and variogram analysis based on the high resolution 3D seismic data. Three types of well correlation modes of vertical facies changes, stacking sandbodies, incised channels, were constructed by integrating the analogous data from the oilfield with dense well pattern. According to the above three techniques of reservoir characterization, the most likely mode of reservoir distribution was established, based on which the oil field development plan was made and economic benefits have been gained.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2012年第5期626-632,共7页
Petroleum Exploration and Development
关键词
边际油田
储集层表征
河流相储集层
三维地震
地质知识库
储集层对比模式
marginal oilfield
reservoir characterization
fluvial facies reservoir
3D seismic
geological knowledge database
reservoircorrelation mode
