DEVICE FOR DEFINING PHASE PERMEABILITY OF FLUID IN ROCK CORE SPECIMENS BY CENTRIFUGATION Russian patent published in 2012 - IPC G01N15/08 

FIELD: machine building.

SUBSTANCE: proposed device comprises core holder and gage intake container arranged there below, high-permeability mixer arranged atop tested specimen and coupled with feed puncheon wherein two chambers are made to contain two diverse fluids. Note here said feed puncheon is made up of two tight chambers with preset fluid flow rate fitted one into another concentric about device axis. Note also that inner chamber space is provided with bottom shutoff valve to form circular clearance around its working lateral surface. Inner chamber bottom is provided with, at least, four radial channels with their outlets communicated with said circular clearance while their inlets are communicated with inner space of another chamber and furnished with needle restrictors threaded surface of which are coupled with appropriate surfaces of circular skirt made on outer cylindrical surface of inner chamber bottom part. Note here that high-permeability mixer represents small-height perforated sleeve. Two sector thrusts for mounting feed puncheon are arranged top said sleeve. Concentric about device axis. Besides, sleeve is fitted in case lateral surface to seal lateral surface of tested specimen. Note that vertical and radial intercommunicated channels are made in feed puncheon lateral wall and bottom to communicate spaces above upper boundaries of diverse fluids in puncheon and mixer.

EFFECT: higher homogeneity of filtered flow, simplified design, easier replacements.

2 dwg