Correlation between formation compressibility
at a given pressure and initial formation compressibility at initial formation pressure
Corrrelation | Name/Author | Scope |
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anchor | Dobrynin |
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alignment | left |
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| \displaystyle c_r(p) = c_{ri} \cdot \frac{ \ln \left( \frac{ p_n }{p_{\rm max}} \right) }{ \ln \left( \frac{p_{ni}}{p_{\rm max}} \right) } |
LaTeX Math Block |
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| p_n = p_{\rm min} + 1.75 \cdot \phi^{0.51} \cdot (p_{\rm max} - p) |
LaTeX Math Block |
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| p_{ni} = p_{\rm min} + 1.75 \cdot \phi^{0.51} \cdot (p_{\rm max} - p_i) |
where is initial formation pressure is initial formation compressibility
| Dobrynin | pmin = 1 MPa < p < pmax = 200 MPa
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See also
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Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petrophysics / Formation compressibility