A Numerical Model for Pressure Analysis of a Well in Unconventional Fractured Reservoirs

Fractured reservoirs are highly heterogeneous in both matrix and fracture properties, which results significant variations well production. Assessing quantifying the influence of fractures on fluid flow is essential for developing unconventional reservoirs. The complicated effects fractured depend geometry, distribution, can be reflected pressure transient testing. biggest challenge lies delineating pre-existing natural distribution pattern, density, azimuth, connectivity. Using advanced finite element method, this paper builds a finely characterized near-wellbore model to numerically simulate testing process naturally further evaluates fracture-related obtain more accurate solution. First, numerical program benchmarked by analytical solutions Eclipse. Next, different models with single or networks set up investigate parameters (e.g., location, dip angle, spacing, ratio permeability permeability, network orientation, horizontal etc.) behaviors Velocity profiles presented visualize analyze their effects, new features regimes derivative plots bottom-hole identified discussed. Finally, based geological geophysical data, including image logs, core descriptions, wireline seismic test practical Dalwogan 2 Surat basin built, analyzed, compared homogenous measured data. show significance characterizing complex