FORMATION TESTING DEVICE Russian patent published in 2018 - IPC E21B49/00 E21B34/12 

FIELD: mining.

SUBSTANCE: invention relates to the wells geophysical exploration, in particular to the oil and gas wells production horizons testing, as well as superdeep and horizontal wells. Formation testing device comprises cylindrical housing consisting of upper, middle and lower housing parts, rod with the splined connection concentrically mounted in the cylindrical housing, equipped with the collar with o-rings, below which radial openings are made, inlet valve, spool bushing is telescopically connected to the additional rod and is installed with possibility of axial movement during the pipe string rotation, additional rod, on which outer surface endless helical groove is made, in which bracket is arranged, rigidly connected to the pin located directly in the cylindrical housing middle part, additional rod is mounted movably relative to the rod with splined connection and cylindrical housing, additional intake valve consisting of the pressure relief valve and located in the cylindrical housing differential bushing, equalization valve, thrust bearing installed between the cylindrical housing and the adapter. Upper housing part is made detachable, the spool bushing is equipped with restrictive nut, spool bushing and the additional rod telescopic connection is made by means of the upper and lower sleeves with the collars, bracket is fixed with the adjusting screw.

EFFECT: invention allows to perform testing of the high-yield wells, as well as superdeep and horizontal wells of different diameters.

1 cl, 3 dwg