扶余油田西5-8区块单砂体的精细刻画
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摘要
在注水开发中后期,储层单砂体相互之间连通关系和剩余油三维空间展布特征是研究的重点。扶余油田西5-8区块在经历溶解气驱、注水开发和3次大规模加密调整后,单砂体剩余油分布复杂,加大了后期有效注水开发的难度。按照单砂体划分原则和方法,采用单砂体精细刻画划分后,根据单砂体平面及剖面展布特征,分析研究井点剩余油控制因素、平面剩余油控制因素和纵向剩余油控制因素,得到主力砂体的水洗厚度变化情况从而知道各单砂体剩余油分布。
During the mid-late stage of water flooding in reservoirs,the study is mainly focused on the communication between the single sand bodies and the 3D distribution of the remaining oil. After solution gas driving,water flooding and three large-scale infill well adjustments at Block West 5-8 of Fuyu oil field,the distribution of remaining oil in single sand bodies has become complex, increasing the difficulty of later water flooding. After fine description and division of single sand bodies by following the division principles and methods for them,the planar and sectional features of sand bodies are studied,the controlling factors for the remaining oil at the well point,or in the horizontal and vertical planes are analyzed. Then the variation in the thickness of the main sand bodies already flushed by water can be obtained to know distribution of the remaining oil.
During the mid-late stage of water flooding in reservoirs,the study is mainly focused on the communication between the single sand bodies and the 3D distribution of the remaining oil. After solution gas driving,water flooding and three large-scale infill well adjustments at Block West 5-8 of Fuyu oil field,the distribution of remaining oil in single sand bodies has become complex, increasing the difficulty of later water flooding. After fine description and division of single sand bodies by following the division principles and methods for them,the planar and sectional features of sand bodies are studied,the controlling factors for the remaining oil at the well point,or in the horizontal and vertical planes are analyzed. Then the variation in the thickness of the main sand bodies already flushed by water can be obtained to know distribution of the remaining oil.
引文
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[8]秦刚,成群,熊金红,等.河道内单砂体成因分析与刻画——以扶余油田中38区扶余油组为例[J].断块油气田,2014,21(3):309-313.
[9]刘卫.老油田复杂油藏剩余油分布的新领域研究——以葡、敖油田窄薄砂岩油藏为例[D].中国石油大学(华东),2010.
[2]周新茂,高兴军;扶余油田泉四段三角洲沉积单砂体期次的识别及精细刻画[C].第四届全国沉积学大会论文集,2009.
[3]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.
[4]杜微,马世忠.复合河道砂体劈分及隔夹层研究-以大庆油田北一区断东葡I2小层为例[J].科学技术与工程,2011,11(16):37-40
[5]陈清华,周宇成,孙珂,等.永安镇油田永3断块沙二下河口坝储层结构单元划分及其意义[J].中国石油大学学报(自然科学版),2014,38(2):10-16.
[6]张海龙.扶余油田东南油水过渡带单砂体对剩余油控制因素研究[D].浙江大学理学院,2009.
[7]张玉,王雅春,张辉,等.松辽盆地大情字井地区青二段沉积微相与砂体特征[J].特种油气藏,2010,17(1):54-56.
[8]秦刚,成群,熊金红,等.河道内单砂体成因分析与刻画——以扶余油田中38区扶余油组为例[J].断块油气田,2014,21(3):309-313.
[9]刘卫.老油田复杂油藏剩余油分布的新领域研究——以葡、敖油田窄薄砂岩油藏为例[D].中国石油大学(华东),2010.