Patent ID: 11965844
Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A method according to claim 7, wherein:
the parameter indicative of free fluid volume in the porous rock sample is given as FFV and is calculated as

FFV=1/A∫T2minT2maxdT2∫Pc=Pc minPc=Pc maxƒ(Pc,T2)DPc,

where A is the normalization parameter defined as

A=∫T2minT2maxdT2∫Pc minPc maxƒ(Pc,T2)dPc,

where ƒ(Pc,T2) is the probability distribution of capillary pressure values as a function of transverse relaxation values,
Pc represents a dimension of the capillary pressure values,
Pc-max represents a maximum capillary pressure value,
Pc-min represents a minimum capillary pressure value,
Pc-cut represents a capillary pressure value at which fluid is considered bound,
T2 represents a dimension of the transverse relaxation values,
T2max represents a maximum T2 value, and
T2 min represents a minimum T2 value.