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  1. Article

    Open Access

    Empirical rock physics relationships on carbonate dry-frame elastic properties

    Laboratory tests were conducted to analyze the ultrasonic velocity response to the pressure change in dry carbonate rocks from the Weyburn oilfield, Canada. Twenty-four samples are from seven wells with helium...

    Zi-Zhen Wang, Gautier Njiekak, Douglas R. Schmitt, Rui-He Wang in Petroleum Science (2021)

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  2. Article

    Correction to: Effective Stress Coefficient for Seismic Velocities in Carbonate Rocks: Effects of Pore Characteristics and Fluid Types

    Due to an unfortunate oversight the sentence “Also, the fact that some carbonates, such as siliciclastic rocks, may be less sensitive to compaction adds another level of complexity.” is not given correctly.

    Gautier Njiekak, Douglas R. Schmitt in Pure and Applied Geophysics (2019)

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    Article

    Effective Stress Coefficient for Seismic Velocities in Carbonate Rocks: Effects of Pore Characteristics and Fluid Types

    The concept of effective stress is key for understanding the dependence of rock elastic and compaction behaviors on stress and pore-fluid pressure. Previous studies on the concept largely used data acquired on...

    Gautier Njiekak, Douglas R. Schmitt in Pure and Applied Geophysics (2019)