摘要
对于裂缝性储层 ,应用纵波和转换波资料提取波场特征参数 (如速度 ,振幅 )反演的裂缝走向、裂缝密度等参数来研究裂缝。基于纵波震源三分量地震资料 ,提出了方位各向异性介质的裂缝预测方法。对经过压缩后的转换波剖面及纵波剖面进行速度反演 ,获得了裂缝参数 ,其中包括与裂缝密切相关的各向异性系数γ和描述潜在气藏的裂缝密度参数。综合利用P波、转换波的各向异性 ,可以更客观、更准确地预测介质的裂缝 ,实际资料应用证实该方法可行。
The main difficulty in the exploration of fractured reservoir is the detection of fracture. The principal fracture strike and fracture density inverted using the wave-field characteristic parameters such as amplitude and velocity of wave-field which were extracted from data of P-waves and converted waves were applied to investigate factures in the fractured reservoir. Accordingly, a method for detecting the fractures in azimuthally anisotropy media was suggested on the seismic data from the P-wave seismic source. The velocities of wave profiles were inversed, and the anisotropy parameters including the S-wave splitting parameter connected with the fractures were obtained. With the fracture detection method, the fracture density parameter showing the potential gas reservoir was given. The successful application of the fracture detection method in practice demonstrated that fractures in anisotropy media can be accurately evaluated by means of integrated data of P-wave and converted wave.
出处
《石油大学学报（自然科学版）》
CSCD
北大核心
2003年第4期32-36,共5页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
中国石油天然气集团公司石油科技中青年创新基金 (2 0 0 1CX 10 )
中国石油天然气集团公司物探重点实验室开发基金(GPKL0 10 7)
"十五"中国石油天然气集团公司科技攻关课题 (2 1 1)
关键词
方位各向异性介质
裂缝预测方法
裂缝性储层
油气勘探
fractured reservoir
azimuthally anisotropy media
wave field
characteristic parameters
inversion
fracture density
fracture strike
detection method
