【摘要】 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对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。更多还原

【Abstract】 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 conditions.So this paper developed a phase frequency division technique to resolve the inadaptability of conventional coherence.Making use of the best frequency band of the fault response and the characteristics of the sensitivity of the coherence to the changes of the formation,it overcame the problem of lacking the ability of identifying the traditional coherence on the vertical fault.The technique is applied to Pinghu area in Shanghai and East Liaodong area,which proved that the frequency division phase technology played a unique role in the fault distribution of dominant frequency for the specific target area.更多还原