METHOD FOR DETERMINATION OF ROCK FILTRATION PROPERTIES Russian patent published in 1994 - IPC

FIELD: drilling. SUBSTANCE: method includes isolation of tested well interval. Located on entire side surface of said interval is filtering elastic screen. Fluid is injected into said interval at preset pressure. Steady consumption of fluid by rock is measured. Then, added to injected fluid is disposed material and injection is continued. Upon completion of injection, the filtering scree is withdrawn from well. Subject to measurement is area of figures with intensive accumulation of dispersed material settled on screen. Said area is used to estimate sectional area of filtration channels. EFFECT: higher efficiency. 2 dwg