基于地震属性优化组合微断裂识别技术及应用

本文以断裂精细解释技术和地震属性分析技术为基础,通过对断裂具有响应特征的地震属性进行优化组合,有效刻画了研究区大级别断裂和微断裂的平面组合以及交切关系。工作流程首先以基于导向的相干体属性控制断裂展布趋势,然后优选融合凸显局部细节的倾角体、方位角体和曲率体等地震属性体精细刻画三、四级断裂和微断裂的空间展布特征,通过该方法有效识别出研究区断裂的5种平面组合样式(梳状、反梳状、岔Ⅰ型、岔Ⅱ型、帚状),7种剖面组合关系(反Y字、Y字、复Y字、X型、帚状、阶梯状和叉状)。该技术方法对复杂断裂的识别具有一定的借鉴意义。

Micro-faults Identification Technology Based on Seismic Attribute Optimizational Analysis

The article is based on fault interpretation skill and seismic attribute analysis technology, combined the different attribute which shows the positive response to micro-faults. Based on the steering coherence body to control the trend of regional fault and merging the dip-body, Azimuth-body, curvature-body which could meticulous describe the distribution of third or fourth level faults at the same time. In the end, according to the technical flow can figure out the plan and profile character of faults. There are five plane assembly style, including comb-type, anticomb-type, Cha I-type, Cha II-type, broom-type. There are seven profile assembly style, including reverse Y-type, Y-type, duplicate Y-type, X-type, broom-type, ladder-type, fork-type. This technique flow can provide certain experience and guide to the complicated rift basin which full of micro-faults.