考虑三维裂缝扩展模型的岩石力学参数反演

Used integral formula of dynamic stress intensity factor as the vertical extension of the criterion, the new model both have the simplicity of proposed 3D model and the precision of true 3D model. Make use of the relationship among crack width, net-pressure and Young's modulus, I have estabished the corresponding curve between wellhead pressure of different time periods and elastic modulus. When solving Young's modulus, apply the method of hypothesis and classics fourth order Runge-Kutta，Bottom hole pressure and the models of considered 3D crack propagation model in situ rock mechanics parameters, have made the assessment of situ rock mechanics parameters more realistic. The method not only can be used to conduct real-time analysis and press post-evaluation, but also has important practical significance for improve the level of fracturing and hypotonic difficult to recoverable reserves of economic development benefits.