收稿日期: 2005-07-04
修回日期: 2005-08-03
网络出版日期: 2005-10-20
基金资助
中国石油天然气集团公司石油科技中青年创新基金项目(编号：2001CX-10)资助.
ESTIMATION FRACTURE PARAMETERS FROM NMO VELOCITIES OF SEISMIC MULTI-WAVE
Received date: 2005-07-04
Revised date: 2005-08-03
Online published: 2005-10-20
杨光海;王必金;郭建伟; . 利用地震多波NMO速度信息预测裂缝的方法[J]. 天然气地球科学, 2005 , 16(5) : 647 -649 . DOI: 10.11764/j.issn.1672-1926.2005.05.647
The fractures are predicted quantitatively utilizing the field data from the west of China. The azimuthal NMO velocities can be used to estimate the orientation of the crack, and the distribution of the fracture. Moreover, the normal (ΔN) and tangential (ΔT) weaknesses of the fracture system can be obtained from the NMO velocities of the seismic multi-wave in the anisotropic media. ΔT gives a direct estimate of the crack density and the ratio ΔN/ΔT is a sensitive indicator of fluid saturation. The validity and applicability have been clearly demonstrated by the results of the field data.
Key words： NMO velocity; Multi-wave; Fracture parameter; Anisotropy.
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