METHOD OF DETERMINING RELATIVE PHASE PERMEABILITY OF ANISOTROPIC ROCKS Russian patent published in 2025 - IPC G01N15/08 G01N23/02 

FIELD: measuring.

SUBSTANCE: invention relates to investigation of physical properties of rocks and can be used to determine relative phase permeability of anisotropic rocks. Core is sampled. A full-size sample is sampled from the sampled core and its sample preparation is performed. Gas permeability is determined. A permeability lobe diagram is constructed to assess the presence of lateral anisotropy. Faces of the full-size sample are oriented so that side X is directed in the direction of a certain maximum permeability. A cubic sample is made from said full-size sample and prepared for filtration experiments. Filtration experiments are carried out on a unit with X-ray transmission of a cubic sample to determine water permeability and phase permeability for oil at residual water saturation of the cubic sample. Based on the obtained data, relative phase permeability for anisotropic rocks is determined.

EFFECT: high reliability of determining relative phase permeability for anisotropic rocks.

8 cl, 3 dwg