REVIEW IN CHARACTERISTICS AND APPLICATION OF CAPILLARY PRESSURE CURVES FOR CENTRIFUGE DATA

doi:10.3863/j.issn.1000-2634.2003.02.012

Abstract

Abstract:

In this paper, the authors have reviewed the method of determination the pore-size distribution of porous materials using centrifuge capillary pressure data. The useful method for the characteristics of the fluid flow properties of rocks, for evaluation production well working fluid to formation damage, for es-
timation of threshold pressure, for determination of wettability and the energy for fluid displacements, for calculation absolute permeability and relative permeability, which is based on the pore-entry size distribution, has been developed. The three-parameter form of the hyperbola fitted to capillary pressure laboratory data, obtain capillary pressure curves analytical function,
differential and integral expression by least-squares solution. Itcan fit the capillary pressure curves throughout the range of data, and obtain accurate the inlet saturation for centrifuge-derived data, and smooth laboratory data, and extrapolate to 100% single-phase saturation to obtain the correct threshold pressure.

Key words: capillary pressure curves, centrifuge, formation amage, wettability, permeability

CLC Number:

TE258

QUE Hong-pei LEI Bian-jun. REVIEW IN CHARACTERISTICS AND APPLICATION OF CAPILLARY PRESSURE CURVES FOR CENTRIFUGE DATA[J]. 西南石油大学学报(自然科学版), 2003, 25(2): 36-40.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.3863/j.issn.1000-2634.2003.02.012

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2003/V25/I2/36

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REVIEW IN CHARACTERISTICS AND APPLICATION OF CAPILLARY PRESSURE CURVES FOR CENTRIFUGE DATA

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