A proce-dure to history matches the step rate test data, to estimate the horizontal in-situ stressand the fracture toughness of the reservoir rock.This has been demonstrated by a...

• 通过模拟得到的数据和现场实测数据拟合,可确定地层的最小水平主应力和岩石的临界应力强度因子,并用实例说明了这种方法的可行性。