相干体分析技术在BST地区的应用
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摘要
在油气田勘探开发中,断层解释的准确性和合理性直接影响构造成果的精度和开发方案的设计。相干体分析技术是目前解释断层最有效的方法之一,该技术已成为全三维解释流程中的重要组成部分。用相干体分析技术进行断层解释和组合,避免了解释结果的随意性,补充了因解释人员经验所导致的结果不合理性。在进行三维地震资料解释之前使用相干体分析技术,可以有效地落实断层的空间展布情况,避免断层的剖面解释和平面组合的多解性。在BST地区利用相干体分析技术,预测出了该地区的断裂系统分布情况,理清了该地区断裂系统中的小断层和大断裂之间的切割关系,对于指导断裂的平面组合,提高断裂识别的精度具有重要意义。
In the exploration and development of oil and gas field,the accuracy and rationality of faults interpretation result directly affect the precision of structural result and the design of exploitation plan.The coherence analysis technique is one of the most effective ways to explain the faults,this technique has become an important part of full three dimensional interpretation.Using the coherence analysis technique to interpret and array faults,which can avoid the arbitrariness of the faults interpretation result,supplement the irrationality of the result that can be aroused by the experience of the interpreters.Before interpreting the three-dimensional seismic data,if making using of coherence analysis technique,can effectively implement the spatial distribution of the faults and avoid the ambiguity of the profile interpretation and plane array of the faults.Using coherence analysis technique in the BST region,which has predicted the distribution of fracture system of the BST region,cleared the cutting relation between small faults and large faults of the fracture system in this region,which is significant for guiding the plane array of the faults and improving the precision of faults identification.
In the exploration and development of oil and gas field,the accuracy and rationality of faults interpretation result directly affect the precision of structural result and the design of exploitation plan.The coherence analysis technique is one of the most effective ways to explain the faults,this technique has become an important part of full three dimensional interpretation.Using the coherence analysis technique to interpret and array faults,which can avoid the arbitrariness of the faults interpretation result,supplement the irrationality of the result that can be aroused by the experience of the interpreters.Before interpreting the three-dimensional seismic data,if making using of coherence analysis technique,can effectively implement the spatial distribution of the faults and avoid the ambiguity of the profile interpretation and plane array of the faults.Using coherence analysis technique in the BST region,which has predicted the distribution of fracture system of the BST region,cleared the cutting relation between small faults and large faults of the fracture system in this region,which is significant for guiding the plane array of the faults and improving the precision of faults identification.
引文
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[2]徐开礼,朱志澄.构造地质学[M].北京:地质出版社,1989.270.
[3]胡伟光.相干体技术在川东北油气勘探中的应用.物探化探计算技术,2010,32(3):260~264.
[4]付雷,田晓东,闫庆学等.相干体技术在三维地震资料中的应用.世界地质,2000,19(3):279~281.
[5]董立生,刘书会,刘跃华等.地震属性分析技术的研究与应用.石油物探,2004,43:17~21.
[6]王永刚,乐永喜,张军华著.地震属性分析技术.山东东营:中国石油大学出版社,2007,1.250.
[7]Marfurt K J,Farmer R L,Bahorich M S.3-D seismic attributes using a semblance-based coherency algorithm[J].Geophysics,1998,63(4):1150~1165.
[8]Bednar J Bee.Least square dip and coheren-cy attributes[C].68th Annual Internat.Mtg Soc Expl,Geophys Expanded Abstract,1998.653~655.
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