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

Claim 19:
20. A system for characterizing a porous rock sample, comprising:
a capillary pressure apparatus and an NMR apparatus, wherein the capillary pressure apparatus is configured to subject the porous rock sample to an applied experimental pressure where a first fluid that saturates the porous rock sample is displaced by a second fluid, and the NMR apparatus is configured to apply an NMR pulse sequence to the porous rock sample subsequent to the operations of capillary test apparatus, detect resulting NMR signals from the porous rock sample, and generate and store NMR data representative of the detected resulting NMR signals, wherein the operations of the capillary pressure apparatus and the NMR apparatus are repeated over varying applied experimental pressure to obtain NMR data associated with varying applied experimental pressure values; and
at least one data processor, operable coupled to the NMR apparatus, wherein the at least one data processor is configured to process the NMR data associated with varying applied experimental pressure values to obtain a probability distribution function of capillary pressure values as a function of NMR property values, and to process the probability distribution function of capillary pressure values as a function of NMR property values to determine at least one parameter indicative of the porous rock sample.