Abstract:

The quantitative prediction technique of tectonic fractures is an urgent subject in the exploration and development of fractured reservoirs.In the present paper,rock fracture method and energy method are used to simulate tectonic fracture development in Qiuling Oilfield of Turpan Hami Basin.The results from both the rock fracture method and the energy method are complementary each other.Thus,a new method—two factor method is proposed to simulate the development of tectonic fractures by means of fracturs value and energy value together.According to this method,a fitting formular predicting the fracture density through calculating fracture value and strain energy is given.A comparison of the predicted fracture densities with the corresponding observed ones of 16 wells was made,the results show that the relative errors of 12 wells are less than 25%.On this basis,the predicted diagrams showing the density distribution of tectonic fractures within the producing formations of the Qiuling Oilfield are presented.