FIELD: survey of boreholes or wells and testing the nature of borehole walls, formation testing, methods or apparatus for obtaining samples of soil or well fluids.
SUBSTANCE: method involves forming channel in side borehole wall and determining channel opening radius and length; calculating equivalent borehole probe diameter; connecting probe with channel and testing formation fluid flow characteristics.
EFFECT: possibility to determine different formation parameters with taking into consideration of change in fluid flow characteristics due to channel presence.
12 cl, 9 dwg
