分频相位分析技术在断层解释中的应用

相干技术通常是识别断层的常用方法，但在实际勘探过程中．常规的相干分析技术在识别复杂地质条件下的断裂系统有一定的不适应性。对此，本文开发了分频相位技术来解决常规相干的不适应性．利用分频突出断层响应的最优势频带．和相位对地层产状变化敏感的特点．克服了传统相干对垂向断距小的断层识别能力不足的问题。并将该技术应用在上海平湖地区及辽东地区，证实了分频相位技术针刈具体的目标研究区其优势频率的断层分布特征具有其独特的作用。

The Application of Frequency Division Phase Analysis Technology to Fault Interpretation

Coherence technology is the commonly used method to identify fault, but in the actual process of exploration, the conventional coherence analysis technique has its certain inadaptability in the identification of fracture system under the complex geological condi- tions . So this paper developed a phase frequency division technique to resolve the inadapta- bility of conventional coherence. Making use of the best frequency band of the fault re- sponse and the characteristics of the sensitivity of the coherence to the changes of the for marion, it overcame the problem of lacking the ability of identifying the traditional coher enee on the vertical fault. The technique is applied to Pinghu area in Shanghai and East I.ia- odong area, which proved that the frequency division phase technology played a unique role in the fault distribution of dominant frequency for lhe specific target area.