DEVICE FOR TAKING SAMPLES OF LIQUID FROM A WELL Russian patent published in 2006 - IPC E21B49/08 G01N1/10 

FIELD: hydro-geological well research.

SUBSTANCE: device has cable suspension, rod with diaphragms in form of plugs, cylindrically shaped body, mounted on external side of upper diaphragm with possible longitudinal movement. A stop is provided on exterior of rod from above. Between aforementioned stop and diaphragm on external surface of rod circular recesses are made, which in terms of amount and distance between one another are equal to amount of diaphragms and distance between diaphragms. Body is provided with apertures in upper section, which from outside are closed by bushing spring-loaded upwardly, made with possible limited downward movement and provided with circular recess. Aforementioned spring in lower part is abutted against external circular recess of body. Balls are mounted in apertures of body, in transport position interacting with circular recesses of rod and with internal surface of bushing, and in working position - with external surface of rod and with circular recess of bushing. In upper section of body, cylindrical chamber is mounted with technological recess outside, connected from above to cable suspension, below which technological apertures are made, and from below - to rod with possible limited upward movement. Outside the chamber, a barrel is mounted with spring localizers and a pin interacting with recess. Barrel is made with possible interaction with bushing in working position, and rod is provided with channel, connecting internal hollows of body and chamber. Recess is made in form of longitudinal grooves successively extended in downward direction and connected by profiled groove.

EFFECT: increased reliability and sample separation quality.

2 cl, 2 dwg