•Objectives of well tests
- •Types of well tests
- •Basic analysis of:
-- Pressure build-up tests
-- Well interference tests
Types of Well Tests
Producing wells Injection wells
Pressure drawdown Pressure fall off
- Multiple rate Multiple rate
- Pressure build-up Injectivity
- Well interference Well interference
- Drill stem Reservoir limit
Objectives of Well Tests
- •Gather transient fluid flow and pressure data in one or more wells simultaneously
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- •Analysis aim at understanding and quantifying reservoir and aquifer behavior
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- •Provide knowledge about reservoir size and continuity
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- •Provide estimates of in-situ properties such as porosity, permeability, transmissibility, productivity, injectivity and formation damage near wellbores
Properties of Reservoir Rocks
•Porosity and absolute permeability
- •Factors that affect rock permeability
- •Compressibility, density and thermal properties
- •Relative permeability
- •Capillary pressure
- •Rock wettability •Tortuosity
