Optimization of Volumetric Fracturing Parameters for Deep Horizontal Wells Based on Integrated Geological-Engineering Workflow in Tuha Oilfield

The volume fracturing technology of horizontal well is one of the key technical approaches to develop deep tight sandstone effectively. Inappropriate fracturing parameters will lead to insufficient reservoir stimulation, that is, low oil productivity and fast decline rate. In order to optimize the volumetric fracturing parameters in Taipei block, this paper established a fine geological model. Meanwhile, this paper also simulated the related fracture geometries and oil production under different fracture parameters based on the integrated geological-engineering software Petrel. The simulation results were verified with actual stimulation wells in the field. Some key fracture parameters have been optimized according to the related oil production of sixteen cases. The simulation results show that, when the fracture spacing is 8 m, the injection flowrate is 14 m3/min, the fluid intensity is 30 m3/m and the proppant intensity is 3.5 t/m, the propped fracture could get the highest fracture conductivity, 25–30 mD. The single well could also get the best oil production, which is 137.07% of the nearby well in the same platform. This study can provide some design guidance in the same type of tight sandstone reservoir.