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凤冈地区是黔北最富有基质的页岩气资源地区之一,燕山期又是该区内构造变动期中最强烈的构造运动时期。通过凤参1井页岩力学实验和声发射测试结果,应用有限元法对凤冈地区燕山期进行了构造应力场数值模拟。根据摩尔-库伦准则,进行裂缝预测。预测结果与声发射所测的燕山期古应力期次数值范围基本吻合。
The Fenggang area is one of the shale gas resource areas with the strongest matrix in northern Guizhou. The Yanshanian period is also the strongest tectonic movement during the tectonic period in this area. Through the shale mechanical test and acoustic emission test results of Fengshen-1 well, the tectonic stress field numerical simulation of Yanshan period in Fenggang area was carried out by using the finite element method. According to the Moore-Coulomb criterion, fracture prediction is carried out. The prediction results are in good agreement with the ancient Yanshanian paleoclimate period measured by acoustic emission.