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在川东地区二级构造单元中 ,不论是高陡背斜 ,或是低陡构造 ,其陡翼轴部附近都存在一个断陡带。由于这些断陡带地质结构复杂 ,地震信息杂乱 ,影响准确解释。在勘探上 ,导致了部分探井的失利 ,制约着许多构造主体部位勘探领域的扩展 ;在气田开发上 ,断陡带的构造细节解释不正确 ,偏离地下实际 ,造成了气藏地质模型与气藏动态特征不吻合 ,静态储量与动态储量误差大 ,直接影响了气藏开发设计方案的准确性。为此 ,在卧龙河断陡带构造细节解释中 ,运用地质、地震、钻井、试井、气藏工程等多学科知识进行综合分析 ,找出了断陡带构造细节变化的规律。初步形成一套行之有效的解释方法。这种方法 ,效果好 ,可信度高 ,对今后在川东断陡带构造细节解释中具有一定的参考作用。
In the secondary tectonic units in eastern Sichuan, whether a steep anticline or a low-steep structure, there is a fault zone near the steep shaft. Due to the complicated geological structure of these fault steep zones, the seismic information is messy and affects the accurate interpretation. During the exploration, some exploration wells have been lost, which restricts the expansion of exploration in many structural bodies. In the development of gas fields, the interpretation of structural details of fault-steep zones is not correct and deviates from the actual conditions in the ground, resulting in the geological model of gas reservoirs and gas reservoirs Dynamic characteristics do not match, static reserves and dynamic reserves error, a direct impact on the accuracy of gas reservoir development and design options. Therefore, based on the multi-disciplinary knowledge of geology, earthquakes, drilling, well testing and gas reservoir engineering, a detailed analysis of the structural details of the fault westerly fault zone in Wolong River has been carried out. Initially formed a set of effective methods of interpretation. This method has good effect and high credibility, which can be used as a reference in explaining the tectonic details of the fault steep-cut belt in eastern Sichuan.