Study on Theoretical Model and Influencing Factors of High Propagation of Vertical Well Pressure Fractures in Block S
DOI:
https://doi.org/10.54097/ajst.v2i2.1160Keywords:
Tight gas reservoir, High technology of seam control, Numerical simulation, Analysis of influencing factors.Abstract
The gas reservoir in block S is relatively thin, and the fracture height of the thin reservoir is out of control seriously, and the effective support efficiency in the fracture is less than 50%. In view of this problem, this paper investigates the application status of fracture control and high-pressure fracturing technology, and carries out the research on the theoretical model and influencing factors of high expansion of vertical well pressure fractures in block s. The research results show that the in-situ stress difference between reservoirs is the most critical factor to control the fracture height, which directly determines the success rate of fracturing construction. When the in-situ stress difference between reservoirs is greater than 4MPa, the fracture height can be effectively controlled. According to the in-situ stress profile and geological data of drilled wells in block s, it is suggested to select the interlayer reservoir with in-situ stress difference greater than 4MPa and low elastic modulus for fracturing construction.
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