Method of measuring rock wettability by means of nuclear...

Details Method of measuring rock wettability by means of nuclear... Method of measuring rock wettability by means of nuclear...

2003-08-18

2008-07-08

Gutierrez, Diego (Department: 2831)

Electricity: measuring and testing

Particle precession resonance

Using well logging device

C702S011000, C702S012000

Reexamination Certificate

active

07397240

ABSTRACT:
A method for measuring the wettability of rocks by low-field nuclear magnetic resonance is described which has application for hydrocarbon reservoir engineering or development, or in civil engineering. The method essentially determines the water wet pore surface and the oil wet pore surface when the sample is saturated with water and oil, by measurements of relaxation times (T1, T2) of the sample placed in a nuclear magnetic resonance device, previously brought to various water or oil saturation states, and calculating the wettability index by combination of values the relaxation times obtained for said surfaces.

REFERENCES:
patent: 4543821 (1985-10-01), Davis, Jr.
patent: 5162733 (1992-11-01), Baldwin
patent: 6765380 (2004-07-01), Freedman et al.
patent: 2002/0067164 (2002-06-01), Venkataramanan et al.
patent: 0 974 839 (2000-01-01), None
patent: WO 01/42817 (2001-06-01), None

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