STAND FOR TESTING PISTON-TYPE HYDRAULIC SAMPLERS Russian patent published in 1994 - IPC

FIELD: drilling equipment. SUBSTANCE: stand includes bed 1 for installation and locking of body of sampler 2. Located inside body is rod 3 with head 4 on one end and seal 5 on the other end. Mounted on rod is sampling tube 6 with piston 7 taking-up pressure of injected fluid. Piston is locked on rod by means of shear pins 8. End of sampling tube is made in form of conical head 9 to facilitate its penetration into sampled rock. Tube outer surface has rack 10 with bosses 11. Displacement transducer 12 is installed square to rack 10 in a spaced relation near end-face surface of sampler body. Hopper with rock 13 is arranged on rolling-contact bearings 14 installed on base 15. Force transducer 16 is located between base 15 and outer surface of vessel with rock and rigidly connected with them. At certain pressure value pins are sheared and sampling tube 6 comes in contact with rock. EFFECT: higher efficiency. 2 cl, 2 dwg