FIELD: oil and gas industry.
SUBSTANCE: device contains installed on the sucker-rod string the reception branch pipe in the form of a feather, the check dish-shaped valve, the check ball valve, the filter, the hydrodynamic valve, the throttle coupling, the hydrostatic valve, the knock-off valve; the valve with compulsory operation. The hydrostatic valve includes a plunger with cross-over holes and is fitted with sealing rings, and its internal cavity is fitted with circulating microvalves . The hydrodynamic valve includes the housing, the adjusting nut, the spring, the thrust, the conical valve and the branch pipe. The housing of the lower check dish-shaped valve is implemented as a centraliser with the maximum allowable diametrical sizes for the casing string of the specific well.
EFFECT: reliability and quality of cleaning of the bottomhole zone of formation and the well face with ensuring of the device operability in the inclined directed and horizontal wells and adjustability of cleaning process.
4 dwg
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