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The Multiphase Flow Behaviour of Naturally Fractured Reservoirs (RES17)

    Description

    This state-of-the-art course covers the characterisation, modelling and simulation of Naturally Fractured Reservoirs (NFRs), their properties including constitutive relationships for matrix and fracture multiphase flow, as well as fracture-matrix transfer and the variation of flow properties with scale.
    Also covered are flow-based upscaling of permeability and relative permeability in view of emergent flow structures and instabilities such as fracture-assisted viscous fingering.

    Course Level: Advanced
    Instructor: Stephan K. Matthäi

    Designed for you, if you are...

    • A reservoir engineer or geoscientist working on fractured reservoirs

    A basic understanding of reservoir characterisation and modelling, multiphase fluid flow in porous media and numerical methods is recommended.

    How we build your confidence

    • Analysis supported by findings from cm- to hm-scale physical experiments and numerical simulations
    • Observations and dynamic data are used to address NFR behaviour on the field-scale
    • The information shared in this course underpins a novel NFR characterisation and reservoir simulation workflow that begins with statistical fracture characterisation in the subsurface, including geomechanical techniques for the prediction of fracture geometrical arrangement, connectivity and aperture and takes into account the in situ stress state. It will be shown how the latter can be inferred from the lithostatic load, borehole breakouts and drilling-induced tensile fractures. The discussed workflow progresses with the computation of grid-block scale fracture - matrix ensemble properties and concludes with field-scale simulation of NFRs
    • The course also tries to establish what dynamic data reveal about the role of fractures or faults in any particular NFR and how these diagnostics should be used to guide data collection, history matching and predictive simulations
    • Many of the conclusions drawn in this course rest on results from Discrete Fracture and (rock)-Matrix (DFM) simulations carried out on unstructured hybrid FEM-FVM scale models. Therefore, the foundations of the DFM and simplifications made / associated assumptions are explained as well
    • The DFM approach is compared and contrasted with existing fracture modelling and flow simulation techniques, including an analysis and discussion of the pros and cons of field-scale dual porosity modelling

    Topics

    • Mechanics, statistics and permeability of naturally fractured reservoirs
    • Naturally fractured reservoirs and THMC processes
    • Fracture mechanics relevant to porous rocks
    • Fracture pattern formation and aperture distributions under in situ conditions
    • Fracture statistics and their measurement
    • Fracture permeability and anisotropy of fractured rock
    • Parameterisation of fracture-matrix dual continua models with (static) field data
    • Fractures versus faults
    • Fracture development and modification due to chemical reactions
    • Fluid flow in naturally fractured reservoirs
    • Unstructured spatially adaptive discretisation of DFM simulation models: hybrid FEM-FVM formulation for DFM simulation
    • Constitutive relationships for multiphase fracture flow and fracture matrix transfer
    • Single-phase flow in fractured rock
    • Single-phase transport through fractured rock
    • Multiphase flow in fractures and rock matrix
    • Flow-based upscaling of fracture-matrix ensemble relative permeability

    Customer Feedback

    "New insights based on research studies and simulation." - Reservoir Engineer at Addax Petroleum
    "The vast knowledge of the instructor is well appreciated" - Snr. Reservoir Engineer at ADCO


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