绕射波分离成像技术在断裂识别中的应用
发布时间：2018-08-14 09:39
【摘要】：断裂是重要的油气储集空间和渗流通道,控制着油气藏的形成与分布。对地下断裂系统分布规律的正确认识是油气勘探乃至后期油气田开发的关键所在。绕射波是地下断裂等小尺度不连续体的地震响应。根据绕射波与反射波在平面波记录上的同相轴形态差异,利用基于平面波预测的绕射波分离技术,从地震记录中将绕射波场分离出来,并单独成像,从而提高小尺度构造的识别精度。数值模型及实际应用效果表明,绕射波分离成像技术对断阶边界的刻画更加清楚,对断裂解释具有一定的指导意义。
[Abstract]:Fault is an important reservoir space and percolation channel, which controls the formation and distribution of oil and gas reservoirs. The correct understanding of the distribution law of underground fault system is the key to oil and gas exploration and later oil and gas field development. Diffraction wave is the seismic response of small scale discontinuities such as underground faults. According to the coaxial morphological difference of diffraction wave and reflection wave in plane wave record, the diffraction wave field is separated from seismic records and the diffraction wave field is separately imaged by using the diffraction wave separation technique based on plane wave prediction. In order to improve the recognition accuracy of small scale structures. The numerical model and the practical application results show that the diffraction wave separation imaging technique can describe the fracture boundary more clearly and has a certain guiding significance for fracture interpretation.
【作者单位】： 中国石油新疆油田分公司勘探开发研究院地球物理研究所;中国石油大学胜利学院油气工程学院;
【分类号】：P618.13;P631.4
本文编号：2182458
[Abstract]:Fault is an important reservoir space and percolation channel, which controls the formation and distribution of oil and gas reservoirs. The correct understanding of the distribution law of underground fault system is the key to oil and gas exploration and later oil and gas field development. Diffraction wave is the seismic response of small scale discontinuities such as underground faults. According to the coaxial morphological difference of diffraction wave and reflection wave in plane wave record, the diffraction wave field is separated from seismic records and the diffraction wave field is separately imaged by using the diffraction wave separation technique based on plane wave prediction. In order to improve the recognition accuracy of small scale structures. The numerical model and the practical application results show that the diffraction wave separation imaging technique can describe the fracture boundary more clearly and has a certain guiding significance for fracture interpretation.
【作者单位】： 中国石油新疆油田分公司勘探开发研究院地球物理研究所;中国石油大学胜利学院油气工程学院;
【分类号】：P618.13;P631.4
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