Prediction of permeability from capillary pressure curves derive

Details Prediction of permeability from capillary pressure curves derive Prediction of permeability from capillary pressure curves derive

1997-03-11

1999-12-28

Oda, Christine K.

Electricity: measuring and testing

Particle precession resonance

Using well logging device

324366, 324362, 250253, G01V 300

Patent

active

060086459

ABSTRACT:
Capillary pressure curves can be derived from nuclear magnetic resonance (NMR) pore size distributions. These derived capillary pressure curves can be used to derive the displacement pressure, the fractional bulk volume of mercury at infinite pressure and a geometrical factor. These factors can be used to accurately predict permeability from an NMR derived capillary pressure curve.

REFERENCES:
patent: 5838155 (1998-11-01), Bowers
Kenyon, W. E. et al., "Pore-Size Distribution and NMR in Microporous Cherty Sandstones" in Transactions SPWLA 30th Annual Logging Symposium, Denver, CO, Jun. 11-14, 1989, Paper LL, pp. 1-24.
Prammer, M. G., "NMR Pore Size Distributions and Permeability At the Well Site" in Transactions 69th Annual Technical and Exhibition of the Society of Petroleum Engineers, New Orleans, LA, Sep. 25-28, 1994, SPE Paper 28368, pp. 55-64.
Swanson, B.F., A Simple Correlation Between Permeabilities and Capillary Pressures: Journal of Petroleum Technology, Dec., 1981, pp. 2498-2503.
Thomeer, J. H. M., "Introduction of a Pore Geometrical Factor Defined by the Capillary Pressure Curve", Petroleum Transactions of the AIME, Mar., 1960, pp. 73-77; and.
Timur, A., "Pulsed Nuclear Magnetic Resonance Studies of Porosity, Movable Fluid, and Permeability of Sandstones", Journal of Petroleum Technology, Jun., 1969, pp. 775-786.

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