DEVICE FOR SAMPLING WELL PRODUCT Russian patent published in 2018 - IPC G01N1/10 E21B49/08 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to a technique for measuring the water cut of a well oil, i.e. an estimate of the proportion of oil and water in the produced formation fluid. Device includes a vertical thin-walled cut-off tube and a sealing assembly for the lower opening of the tube in the corresponding receptacle of the bottom of the reservoir for collecting well product. Lower part of the cut-off tube is provided on its outer side with a rim, the edge of which has a rounded profile along the circumference, the receiving opening in the bottom of the reservoir corresponds to the outer diameter of the tube, the bottom of the reservoir is provided around the opening with a sealing ring made of oil resistant rubber, along the circumference of the rubber ring to a height higher than the height of filling liquid into the reservoir, guide rods are located for convenient and vertical descent of the cut-off tube through the liquid, and in the upper part of the guide rods there is an internal thread with a large pitch, and in the upper part of the cut-off tube there is a reciprocal external thread with a similar pitch for connecting the tube and the bottom of the reservoir and pressing the rounded edge of the tube rim to the rubber ring, the upper part of the tube is also provided with a turntable to rotate the tube around its axis.

EFFECT: technical result is the cut-off of the sample in the tube.

1 cl, 2 dwg