摘要
多分量勘探技术近年来发展迅速,在非均质性储层的含油气预测、油藏精细描述中发挥了重要作用并显示了巨大的应用潜力,由于横波对介质的各向异性响应比纵波敏感,故利用多分量技术探测介质各向异性参数比常规纵波勘探更有优势。回顾了近年来利用多分量技术探测裂缝各向异性的进展状况,重点介绍了利用横波双折射现象预测裂缝走向、密度的方法原理和实际应用的一些主要方法如最小熵旋转法、正交基旋转法、全局寻优法等及其应用效果,并指出了每种方法的优点与不足,最后展望了该技术的应用前景。
The fast growing technique, multicomponent seismic, has played an important role and shown a great potential for application to the oil and gas prediction of heterogeneous reservoir and the reservoir fine description. As S-wave is more sensitive to anisotropy medium than P-wave, multicomponent seismic has many advantages over the pure P-wave exploration in estimating anisotropy parameters. The paper reviews the progress of multicomponent methods for detecting fractures in recent years, and provides a brief introduction to the theory of using S-wave birefringence to predict fracture orientation and density, as well as some main methods in practice such as minimum entropy rotation method, orthogonal base rotation method and simulated annealing method. It also presents the effects, advantages and disadvantages of every method, and offers a prospect for the technique application.
出处
《天然气地球科学》
EI
CAS
CSCD
2007年第2期293-297,共5页
Natural Gas Geoscience
关键词
多分量地震
双折射
裂缝
各向异性
Multicomponent seismic
Birefringence
Fracture
Anisotropy.
