When the fracture spacing is too small, not only would it waste fracturing materials and resources, but also it cannot achieve the expected economic benefits.
Half fracture spacing (m).
Fracture spacing increases away from the fault.
Therefore, there exists an optimal hydraulic fracture spacing economically.
Then, a comparison of CO2-EOR performance in shale reservoirs was conducted on different fracture spacing scenarios (the 200-ft and 100-ft fracture spacing).
Our results demonstrate that the network area has a peak value with the varying fracture spacing and therefore, the associated spacing is optimal fracture spacing.
Fracture spacing tends to increase proportional to bed thickness in limestone and chalk beds; however, dramatic differences in fracture spacing are observed in mudrock.
In this paper, the stress field is studied with the numerical method at different fracture spacing.
This indicates that stress concentration around the fracture will be strengthen as fracture spacing reduces.
The stress along the wellbore is mainly influenced by the fracture spacing.
