海上河流相油田井震一体化储层精细构型技术与应用
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摘要
针对渤海海上河流相油田复杂地质情况,以渤中28-2南油田明化镇组下段Ⅱ油组1小层主力砂体为例剖析油田内部构型。通过地震相识别复合河道边界,在复合河道内利用测井相将其细分至单河道级别,再应用地震波形特征追踪刻画单河道平面展布特征。井震结合追踪刻画水下分流河道的充填演化期次,进而对浅水三角洲的内部构型进行精细解剖,从而为解决该砂体生产上的突出矛盾以及油田后期的综合调整提供有力支撑。
The geological reservoir conditions of fluvial oilfields offshore in Bohai bay are complex,with the chief sand body in lower Minghuazhen formation of BZ28- 2S oilfield as an example. Based on the previous research,the planar distribution of multiple- channel is traced and characterized through the seismic facies and the channel boundary is modified through the combination with logging facies. Single channel is subdivided in the multiple-channel through logging facies and the planar distribution of single channel is identified through the seismic waveform characteristics. Moreover,the precise of result is verified by using blind shaft and tracers. Research shows that on the base of single channel precisely characterized to identify the dominant channel,which can effectively solve the production dynamic contradiction and is of great significance to the late oilfield with efficient and reasonable development.
The geological reservoir conditions of fluvial oilfields offshore in Bohai bay are complex,with the chief sand body in lower Minghuazhen formation of BZ28- 2S oilfield as an example. Based on the previous research,the planar distribution of multiple- channel is traced and characterized through the seismic facies and the channel boundary is modified through the combination with logging facies. Single channel is subdivided in the multiple-channel through logging facies and the planar distribution of single channel is identified through the seismic waveform characteristics. Moreover,the precise of result is verified by using blind shaft and tracers. Research shows that on the base of single channel precisely characterized to identify the dominant channel,which can effectively solve the production dynamic contradiction and is of great significance to the late oilfield with efficient and reasonable development.
引文
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[2]Miall A D.Architectural-element Analysis:A New Method of Facies Analysis Applied to Fluvial Deposits[J].Earth Science Reviews,1985,22(4):261-308.
[3]吴胜和,岳大力,刘建民,等.地下古河道储层构型的层次建模研究[J].中国科学D辑,2008,38(增刊1):111-121.
[4]刘钰铭,侯加根,王连敏,等.辫状河储层构型分析[J].中国石油大学学报(自然科学版),2009,33(1):7-11.
[5]卢虎胜,林承焰,程奇,等.东营凹陷永安镇油田沙二段三角洲相储层构型及剩余油分布[J].东北石油大学学报,2013,37(3):40-47.
[6]张昌民,尹太举,朱永进,等.浅水三角洲沉积模式[J].沉积学报,2010,28(5):933-944.
[7]王西文,苏明军,王大兴,等.相控-等时小层对比方法及应用[J].石油勘探与开发,2003,30(6):78-80.
[8]何宇航,于开春.分流平原相复合砂体单一河道识别及效果分析[J].大庆石油地质与开发,2005,24(2):17-19.
[9]张庆国,鲍志东,宋新民,等.扶余油田扶余油层储集层单砂体划分及成因分析[J].石油勘探与开发,2008,35(2):157-163.
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