| 含倾斜定向排列裂隙介质纵波特征 |
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| 引用本文： | 刘百红,周巍,马中高.含倾斜定向排列裂隙介质纵波特征[J].物探与化探,2012,36(3):467-472. |
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| 作者姓名： | 刘百红 周巍 马中高 |
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| 作者单位： | 中国石油化工股份有限公司石油物探技术研究院,江苏南京,210014 |
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| 基金项目： | 国家重大科技专项(2008ZX05014-001);中石化科技攻关项目(P09067)共同资助 |
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| 摘 要： | 根据Schoenberg的含裂隙介质的线性滑移模型在弱各向异性近似条件下根据Bond变换获得了含倾斜定向排列裂隙介质的弹性系数矩阵。在将含倾斜定向排列裂隙介质视为倾斜横向各项同性（TTI）介质的基础上根据弱各向异性近似条件下TTI介质纵波相速度、弹性波阻抗以及反射系数的近似解析解,研究了裂隙倾斜角对含倾斜定向排列裂隙介质中纵波相速度、反射系数以及波阻抗的影响。研究发现含倾斜裂隙介质的纵波相速度、各向异性弹性波阻抗、反射系数三个参数具有类似方位各向异性特征：入射角大的时候,显示较强方位各向异性,但是这三个参数对入射角的依赖程度却不完全相同,反射系数对入射角的依赖程度最大。
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| 关 键 词： | 地震勘探 裂隙介质 TTI介质 各向异性 |
STUDY ON THE P-WAVE CHARACTERS OF MEDIA WITH TILTED ALIGNED FRACTURE |
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| LIU Bai-hong
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ZHOU Wei
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MA Zhong-gao.STUDY ON THE P-WAVE CHARACTERS OF MEDIA WITH TILTED ALIGNED FRACTURE[J].Geophysical and Geochemical Exploration,2012,36(3):467-472. |
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| Authors: | LIU Bai-hong ZHOU Wei MA Zhong-gao |
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| Institution: | (Nanjing Institute of Geophysical Prospecting,SINOPEC,Nanjing 210014,China) |
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| Abstract: | According to Schoenberg’s linear-slip model and Bond transform,the elatica tensor of tilted transform isotropic(TTI) media is getted.Consider the media that contains tilted aligned fracture as TTI media,and then the P-wave phase velocity,PP-wave reflection coefficients and anisotropic elastic impedance of the media with fracture are studied based on the approximate analysis formula of the P-wave phase velocity,PP-wave reflection coefficients and anisotropic elastic impedance of TTI media.P-wave phase velocity,PP-wave reflection coefficients and elastic impedance of the media with fracture are all display stronger anisotropy with bigger incidence angle,but PP-wave reflection coefficients is more sensitive to the incidence angle. |
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| Keywords: | seismic exploration cracked media TTI media anisotropy |
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