边缘检测技术砂体边界识别方法研究
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摘要
随着油气勘探开发的发展,后期的隐蔽性油气藏成为当前研究的重点,由于岩性油藏控制因素复杂,油藏分布特点不清楚,导致勘探效果不理想,究其原因主要是对岩性油气藏的砂体的识别、描述方法尚不成熟,制约了勘探成功率的提高。特别是在河流相岩性油气藏勘探开发中,应用地震技术预测和识别砂体的方法很多,但由于地震资料分辨率有限,砂体边界识别存在不确定性。研究采用边缘检测技术对地震属性进行处理,确定砂体的位置及其边界,提高了三维地震成果的使用效率和应用水平,边缘检测技术在研究区块取得了良好的效果。
With the continuous development of oil and gas exploration,the development of subtle reservoirs was the key target at the late stage,because of the complex control factors of lithological reservoirs,unclear of reservoir distribution characteristics and poor effect of oil exploration.The reason was that the method for recognizing,describing the sandbodies in the lithologic reservoirs were not mature,it constrained the promotion of success ratio of oil exploration ,especially in fluvial facies lithologic reservoirs.The identification for the boundary of sand body existed uncertainty because of the limited resolution of seismic data.New techniques,especially edge detection,are used in the oil and gas exploration and development,these techniques have a lot of advantages in practical application.The joint use of the coherence technology with seismic attribute and image processing technology provides a better solution for structural and lithological problems encountered in oilfield production,greatly enhances the efficiency and application of three-dimensional seismic method.The coherence technology is well used in oil fields.
With the continuous development of oil and gas exploration,the development of subtle reservoirs was the key target at the late stage,because of the complex control factors of lithological reservoirs,unclear of reservoir distribution characteristics and poor effect of oil exploration.The reason was that the method for recognizing,describing the sandbodies in the lithologic reservoirs were not mature,it constrained the promotion of success ratio of oil exploration ,especially in fluvial facies lithologic reservoirs.The identification for the boundary of sand body existed uncertainty because of the limited resolution of seismic data.New techniques,especially edge detection,are used in the oil and gas exploration and development,these techniques have a lot of advantages in practical application.The joint use of the coherence technology with seismic attribute and image processing technology provides a better solution for structural and lithological problems encountered in oilfield production,greatly enhances the efficiency and application of three-dimensional seismic method.The coherence technology is well used in oil fields.
引文
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[4]马沛东.准噶尔盆地车排子地区上第三系砂体识别方法[J].石油物探,2006,45(5):487～488.
[5]季虎,孙即祥,邵晓芳,等.图像边缘提取方法及展望[J].计算机工程与应用,2004,14(6):70～71.
[6]贺振华,黄德济,文晓涛.裂缝油气藏地球物理预测[M].成都:四川科学技术出版社,2007.136～137.
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