1　前言　　地震相干技术让解释者迅速显现和绘制复杂的断裂系统。用井控制的标定增加了识别重要的地层特征和可能的油/水接触的能力。地震相干技术应用于特立尼达(Ｔｒｉｎｉｄａｄ)近岸三维地震调查,降低了勘探周期和增进了对该区构造单元的认识。下面展示相干技术可用于识别 1 Introduction Seismic coherence techniques allow the interpreter to quickly visualize and plot complex fracture systems. Well-controlled calibration increases the ability to identify important formation characteristics and possible oil / water contact. Seismic coherence techniques are applied to the Trinidad nearshore 3D seismic survey to reduce exploration cycles and improve understanding of tectonic units in the area. The following shows coherent techniques that can be used to identify