ABSTRACT:

Understanding the dynamic behavior of stress field during the production period helps to better design the production measures and engineering parameters of the following refracturing treatment. Based on the theory of pore elasticity, a production induced stress model was built. Combined with the field seismic and fracturing data, a geometric model of multi-fractured horizontal well in carbonate reservoir is established. Taking a well in Ta’ he oilfield as an example, the accuracy of the model is verified by actual production data. Through the simulation results, the model can accurately calculate the pore pressure and stress field distribution of carbonate rock formation during production process, then the minimum principal stress around the wellbore was analyzed. This study is instructive for uncovering the factors that affect the induced stress field during the production process. The results are also of great value for the optimization of refracturing treatment.

Keywords:
Modeling & Simulation, reservoir geomechanics, complex reservoir, Directional Drilling, Engineering, carbonate reservoir, hydraulic fracturing, drilling operation, pore pressure, Reservoir Characterization
Subjects:
Drilling Operations, Hydraulic Fracturing, Unconventional and Complex Reservoirs, Directional drilling, Naturally-fractured reservoirs, Carbonate reservoirs, Re-fracturing
2018. American Rock Mechanics Association
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