Notes

Experimental Research Of Fracture Permeability For Stimulated Reservoir Volume Srv In Shale Formation Transport In Porous Media
From Table four, the improved model resulted in an ESRV value with a decrease of a minimum of 12%. This helps the assertion that microseismic data tend to overestimate the productive volume in shale gas reservoirs. In addition, the current model has included the fundamental and a number of the most essential geomechanical parameters in both fracture peak and fracture length modules to be able to obtain a extra dependable ESRV estimation of both reservoirs. Besides, the stress and permeability sensitivity were thought-about on this model. Thus, this model could be thought to be acceptable to be used for ESRV estimation of shale gas reservoirs because it gave values which may be close to those reported in the revealed items of literature.
The observation and statistical analysis of fractures induced in HF by the three totally different fluid viscosities using the fluorescent technique showed ability of L-CO2 injection to attain effective stimulation. The outcomes counsel that using a low viscosity fluid in HF of shale reservoirs can obtain extra productive network with higher SRV. In addition, the remark appears to be in preserving with the tendency observed within the earlier researches. In order to facilitate the institution of the mathematical model for the EGP phase, the fracture community across the shale gas fractured nicely is simplified into the SRV region composed of the matrix system and fracture system. As shown in Figure 4, the effective fracture system is made up of a fracture part and a matrix section. The fracture part consists of artificial hydraulic fractures, the secondary fractures generated by fracturing, and active pure fractures.
The second stage is the bilinear move stage, which displays the linear flow traits of hydraulic fractures and formation round fractures, and its reflection on the pressure and pressure derivative curve is a parallel line with a slope of 1/4. The third stage is the linear flow stage, which reflects the traits of linear circulate within the fractured space. The pressure and pressure derivative curves are parallel strains with a slope of half of.
DFIT interpretation
The storativity ratio mainly affects the bilinear move stage, the linear circulate stage, and the crossflow stage of the matrix system to the fracture system (Figure 11). The larger the storativity ratio is, the longer the period of bilinear flow and linear flow is and the smaller the melancholy amplitude is in the crossflow stage. The bigger the storativity ratio is, the more the fluid is contained within the fracture system, and the larger the elastic energy is, so the longer the length of the bilinear move and linear move continues. As the percentage of fluid increases within the fracture system and decreases in the matrix system, the vitality supplement to the fracture system is lowered, and the despair amplitude of the pressure spinoff curve is reduced.
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