Geomechanical and Stability Analysis with purpose hydraulic fracturing: A case study in Fahliyan reservoir in one of Iranian oil field

Well bore stability analysis is a procedure with the view to economically improving the drilling operation. Identification of diverse types of rupture in the well bore is crucial in stability analysis. Due to reduction I reservoir pressure and index of per، hydraulic fracturing well be performed in order to increase the permeability and production from well. During the aforementioned procedure، fluid is injected inside the well to induce the fracture in the walls. Hydraulic fracturing has received much recognition as a reliable method for the stimulation of oil reservoir. In this study، conducted on 400 m of limestone in fahlyian reservoir in darkhovein oil field، pressure of shear and compressional failure is determined by virtue of parameters including rock mechanic and information on well logging as well as in situ stress of vertical and maximum and minimum horizontal. Safety mud window was defined between 0. 84 and 4. 2. The minimum allowable mud pressure for preventing the shear failure was between 33. 51 and 52. 89 and the maximum range was determined between 47. 4 and 97. 55. Furthermore، minimal required mud pressure for inducing compressional rupture and hydraulic fracturing was estimated between 108. 87 and 151. 38.