地震资料目标精细处理及在水平井部署中的应用
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摘要
为研究密井网条件下小断层、微幅度构造和砂体空间展布特征,进一步挖掘大庆长垣南部常规三维地震资料的潜力,针对中浅层目标,应用小面元叠前时间偏移处理技术,对常规三维地震资料进行精细处理。面元细分到10m×10m以后,资料品质明显改善,提高了小断层和前缘相储层中窄小河道砂体的刻画能力。根据目标精细处理资料,结合井资料,确定杏十三区东部过渡带为单斜阶地构造,重新确定了油水边界,预测过渡带稳定分布席状砂中发育枝状窄小河道砂体。根据研究成果部署实施的7口水平井,实钻结果与预测相符,实现已开发油田的规模化外扩。
To further dig the potence of conventional seismic data in the south of Changyuan tectonic zone in Daqing Oilfield,which can resolve problems such as minor faults,micro-amplitude structures,dimensional distributing characters of sands under the condition of close spacing,the fine target processing of conventional seismic data for middle-shallow formation has been completed by applying the prestack time migration processing technique for small binning.After subdividing binnings up to 10m×10m,the quality of the data has been obviously enhanced to improve the ability of describing minor faults and strait channel sands in front facies.According to data of fine target processing,combined with well information,the research results reveal that the structure of the transitional zones in the east of Xing-13 region belongs to single-taper terrace,and the water/oil contact boundary was redefined,to predict that ramiform and strait channel sands are developed in the stable distribution sand sheet in the transitional zones.The deployment and implementation of seven horizontal wells has been instructed successfully according to the research results.
To further dig the potence of conventional seismic data in the south of Changyuan tectonic zone in Daqing Oilfield,which can resolve problems such as minor faults,micro-amplitude structures,dimensional distributing characters of sands under the condition of close spacing,the fine target processing of conventional seismic data for middle-shallow formation has been completed by applying the prestack time migration processing technique for small binning.After subdividing binnings up to 10m×10m,the quality of the data has been obviously enhanced to improve the ability of describing minor faults and strait channel sands in front facies.According to data of fine target processing,combined with well information,the research results reveal that the structure of the transitional zones in the east of Xing-13 region belongs to single-taper terrace,and the water/oil contact boundary was redefined,to predict that ramiform and strait channel sands are developed in the stable distribution sand sheet in the transitional zones.The deployment and implementation of seven horizontal wells has been instructed successfully according to the research results.
引文
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[4]刘文岭,韩大匡,胡水清,等.高含水油田发展油藏地球物理技术的思考与实践[J].石油学报,2009,30(4):550-559.
[5]袁红军,吴时国,王箭波,等.拓频处理技术在大牛地气田勘探开发中的应用[J].石油地球物理勘探,2008,43(1):69-78.
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[7]张军华,郑旭刚,王伟,等.面元细分处理资料的分辨率定量评价[J].油气地球物理,2009,7(3):14-19.
[8]朱生旺.f-x,y域三维道内插[J].石油地球物理勘探,1997,32(1):117-125.
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[10]刘波,刘振,王广运,等.大庆老区水平井地质设计方法[J].大庆石油地质与开发,2003,22(5):46-50.
[11]董艳蕾,朱筱敏,曾洪流,等.黄骅坳陷岐南凹陷古近系沙一层序地震沉积学研究[J].沉积学报,2008,26(2):234-240.
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