What question did this study set out to answer?

To establish a mathematical method for determining effective rock permeability and static reservoir pressure from bottom hole pressure build-up data following well shut-in.

April 1, 1950Journal of Petroleum Technology

The Estimation of Permeability and Reservoir Pressure From Bottom Hole Pressure Build-Up Characteristics

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Authors

CMCharles C. MillerUniversity of North Carolina at Chapel Hill ADA.B. DyesAtlantic Copper (Spain)CHC.A. Hutchinson

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Implication

Analytical modeling demonstrates method for estimating permeability and pressure from shut-in pressure build-up curves, indicating improved reservoir characterization despite afterflow effects.

Key Points

To establish a mathematical method for determining effective rock permeability and static reservoir pressure from bottom hole pressure build-up data following well shut-in.
Derived unsteady-state flow equations for compressible liquids under two boundary conditions: constant pressure at the drainage radius and no-flow boundary conditions.
Extended analytical formulations to approximate two-phase reservoir flow and investigated wellbore storage and afterflow effects using an electrical analyzer.
Formulated build-up equations relating shut-in pressure trends directly to permeability, porosity, fluid viscosity, compressibility, production rate, and drainage radius.
Demonstrated that plotting pressure build-up characteristics permits quantitative estimation of effective formation permeability despite continued fluid influx into the wellbore after surface shut-in.

Cite This Study

Miller et al. (1950) studied this question.

synapsesocial.com/papers/6a7e73a7280ff5a364b7b747 https://doi.org/10.2118/950091-g

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Implication

Analytical modeling demonstrates method for estimating permeability and pressure from shut-in pressure build-up curves, indicating improved reservoir characterization despite afterflow effects.

The Estimation of Permeability and Reservoir Pressure From Bottom Hole Pressure Build-Up Characteristics

Discussion

Member takes

Implication

Key Points

Cite This Study

The Estimation of Permeability and Reservoir Pressure From Bottom Hole Pressure Build-Up Characteristics

Discussion

Member takes

Implication

Key Points

Cite This Study

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