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1-Nodal Analysis – Well Inflow

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Product description

Well production mechanisms are one of the most important things to understand when working at optimizing your wells. Whatever if your well is in natural flow or if it uses artificial lift, mastering the concepts of inflow and outflow will allow you to understand any well behavior and optimize it.

In this class, reservoir engineering, petroleum engineering and well performance will be put together to give you strong and global understanding of the inflow mechanism. You will learn all the key concepts to master how hydrocarbons flow from the reservoir to the bottom of the well.

All parameters of the productivity index formula will be discussed. Their evolution with reservoir production and their impact on the well productivity will be explained.

Objectives:

This course connects reservoir engineering to well performance and petroleum engineering. Participants will learn about reservoir and fluid properties and get a deep understanding of the inflow mechanism.

Curriculum:

  • Productivity index formula, its units and different expressions
  • Productivity index in biphasic production
  • Gas productivity index and well inflow formula
  • Characteristics of reservoir rock:
    • Porosity
    • Saturation
    • Permeability (absolute, effective and relative)
    • Oil-water relative permeability
    • Oil wet vs. water wet rock – Effect on relative permeability
    • Oil-gas relative permeability
    • 3 phase relative permeability
    • Anisotropy
    • All you need to know about coning. When is it a risk?
  • PVT and fluid properties:
    • Hydrocarbon phase diagram
    • Fluid models (black oil, volatile oil, wet gas, dry gas, retrograde condensate)
    • PVT experiments (flash and differential liberation) and fluid sampling
    • Bubble point pressure
    • Solution GOR (Rs)
    • Viscosity and its evolution vs. pressure and temperature
    • Formation volume factor
  • Drainage & well radius, reservoir thickness
  • The difference between drainage and investigation radius
  • Skin (geometrical, completion, damage…)
  • Deliverability curve (linear, Vogel and composite)
  • Free petroleum toolbox

Designed for:

  • Production, Petroleum or Well Performance Engineers to maximize their well production
  • Reservoir engineers to link reservoir engineering with well production
  • Field Production Personnel to understand the criticality of data
  • Completion or Surface Facilities Engineers to understand what they can do to help maximizing well production

Pre-requisites:

  • Basic knowledge on well architecture
  • Awareness on the oilfield terms

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