泌阳凹陷北部斜坡带浅层地震资料处理技术探讨
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摘要
泌阳凹陷北部斜坡带地质构造相对复杂,而主要目的层又是浅层,是较为典型的浅层复杂断块油气藏。对于浅层资料来说,有它难以回避的劣势:受地表因素的影响较大、覆盖次数较低。必然造成干扰波严重,横向稳定性降低,速度场的求解精度不高,偏移处理难度较大等问题。因此,在处理过程中要着重做好叠前去噪处理、静校正处理、地表一致性处理、速度分析和偏移成像处理等技术。实际处理中见到了良好的效果,有效地解决了浅层资料存在的问题,满足了深化研究的需要。
Geological structure in the slope zone of the northern Nanyang depression is relatively complex.The major layer of interesting was shallow.It was typical shallow complex block reservoir.For shallow data,the influence of surface factor and low coverage was an unavoidable disadvantage.These resulted in serious noise,low lateral stability,inaccurate velocity,difficult migration.Pre-stack noise removal,static correction,surface consistent,velocity analysis and migration should be implemented.It has a good effect in actual processing.The problem on shallow datais effectively solved,it can meet the demands of deepened research.
Geological structure in the slope zone of the northern Nanyang depression is relatively complex.The major layer of interesting was shallow.It was typical shallow complex block reservoir.For shallow data,the influence of surface factor and low coverage was an unavoidable disadvantage.These resulted in serious noise,low lateral stability,inaccurate velocity,difficult migration.Pre-stack noise removal,static correction,surface consistent,velocity analysis and migration should be implemented.It has a good effect in actual processing.The problem on shallow datais effectively solved,it can meet the demands of deepened research.
引文
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[3]熊翥.地震数据数字处理应用技术[M].北京:石油工业出版社,1993.
[4][美]渥.伊尔马兹.地震数据处理[M].黄绪德,袁明德译.北京:石油工业出版社,1994.
[5]曹延军,游洪文,林玉英等.叠前时间偏移技术及应用[J].断块油气田,2004,11(5):21～22.
[6]王棣,王华忠,马在田等.叠前时间偏移方法综述[J].勘探地球物理进展,2004,27(5):313.
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