Журнал нефтяной и экологической биотехнологии

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Feasibility Study of Hydraulic Fracture Operations (A Case Study of an Oil Reservoir in the Southwest of Iran)

Hajnajafi Reza, Arman A, Sepehr N, Esfehanian M and Ghazal H

Hydraulic fracture is one of the most important and best methods of enhancement recovery in oil and gas wells. Hydraulic fracture operations refer to a process in which fluid is pumped into well with a relatively high injection rate. Pumping operations are continued till the pressure reaches to a level which causes the creation and expansion a crack in the well wall. In the present study, with respect to the status of rock mechanics status in an oil reservoir in southwest of Iran, we attempts to numerically analyze a geo-mechanical model to find a background in line with the way of stress distribution against depth as well as rock resistance. We also tend to investigate each layer based on the data obtained from logging and analyze parameters such as porosity, water saturation and stress in each layer and neighboring layers. Finally, we compute the layer appropriate for fracture creation as well as onset, propagation and closure pressures to fulfill a successful hydraulic fracture operation.