Well Inflow Optimization Training

Current Course Schedule:

Objective:

The objective of this course is to examine reservoir inflow performance and how it is affected by various completion methods. It is intended for petroleum, reservoir and production engineers interested in learning how to analytically model and quantify the flow of hydrocarbons from the reservoir into the wellbore. The course is recommended as a precursor to the course Production System Optimization, where together they provide a sound, practical engineering approach for maximizing recovery from hydrocarbon reservoirs.

Course Description:

The course begins with a rigorous and thorough treatment of reservoir inflow performance for both oil and gas wells and identification of the various skin contributions. The impact of skin on well performance is analyzed in detail in a descriptive review of completion operations such as perforating, sand control and matrix acidizing. Improved reservoir recovery is often achieved through well stimulation or the use of horizontal wells.

The course goes on to examine the contribution of hydraulic fractures, with particular emphasis placed on reservoir performance and fracture conductivity. Pressure analysis methods for fracture design and diagnostics are reviewed. Finally the course deals with the effect of horizontal wells and drain holes in optimizing the reservoir potential and the impact of various completion parameters on well productivity. Practical problems, consisting of both hand worked and computed examples, are used throughout the course to reinforce the theoretical content.

Course Contents:

1. Reservoir Inflow Performance
   • Reservoir performance (IPR) in oil wells: steady state, PSS, transient flow
   • Productivity index (PI), effects of PVT
   • Solution gas drive. Non linear IPR relationships
   • Gas flow, different pressure formulations, non-Darcy flow
   • Skin component identification and analysis
2. Wellbore - Formation Interface
   • Perforations: geometry and penetration, flow profiles, perforation skin modeling, overbalanced perforating
   • Sand control: mechanisms of sand production and sand exclusion methods. Gravel pack damage & skin
   • Formation damage mechanisms and their impact on skin. Chemical damage removal treatments and matrix stimulation
3. Hydraulic Fracturing
   • IPR for a fractured well (steady state & transient) - stimulation candidate selection
   • Rock mechanics, earth stresses and fracture containment
   • Fracturing treatment design: fluid efficiency and proppant scheduling
   • Fracture conductivity and skin - fluid and proppant effects on fracture conductivity and reservoir performance
   • Acid fracturing of carbonate reservoirs
4. Horizontal Wells
   • Horizontal well IPR and boundary effects, coning/cusping relationships, performance prediction for multilateral completions
   • Relative skin effects in horizontal completions - stimulation of horizontal wells