SU1382993A1 - Sucker-rod diaphragm-pipe well pump - Google Patents

Abstract

Invention m. used in the oil-producing industry in the operation of wells under conditions complicated by sand formations. The purpose of the invention is to expand the functionality. The elastic diaphragm 3 is provided with elastic plate rods 8 connected to the suction and discharge valve assemblies 6 and 7 and having pushers 9. The diaphragm is installed with the possibility of interaction with the tubular constrictor 10 of the housing 2 through the pushers during reciprocating movement of the column of hollow rods 4. At As the receiving-injection chamber (K) 5 moves upwards, it does not fit into the constrictor 10 along the cross-sectional diameter, is crushed, pressure in it rises, and valve 7 opens. The well fluid flows from K into the column of hollow rods and further into the collection system. As the boom string moves downward, valve 7 closes, K regains its shape, valve 6 opens, and well fluid fills it. 2 hp f-ly, 1 ill. with (L

Description

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The invention relates to a technique of oil production, in particular to well-sucker-rod diaphragm pumps, and can be used in the oil industry in the operation of wells under conditions complicated by sand.

The purpose of the invention is to expand the functionality.

The drawing schematically shows a downhole sucker rod diaphragm pump, a general view.

The downhole sucker-rod diaphragm pump comprises a body 2 connected to the column of pumping pipes 1 and a tubular elastic diaphragm 3 connected to the hollow column of the rods 4, made in the form of a receiving-compressor chamber 5 and installed with the possibility of its interaction - | Noy surface (not labeled) with body 2, with suction 6 and pressure 7 valves installed at the bottom and top of its first parts. The elastic diaphragm tube 3 is provided with elastic lamellar rods 8 connected to the suction 6 and discharge valve 7 assemblies and having pushers 9, and the housing 2 is equipped with a tubular constrictor 10, and the tubular diaphragm 3 is installed with the possibility of interaction with the tubular cone 10 of the housing 2 through the pushers 9 when the column is moved back to the Gag | hollow rods 4. The pushers 9 are made (steam tubes and the flexible diaphragm 3 is tubular and reinforced with a metal mesh (not shown).

The pump works as follows. During the upward movement of the column of hollow Rods 4, it lifts the elastic lamellar rods 8 connected with it through the suction 6 and delivery 7 valve assemblies with ball pushers 9 and the tubular elastic diaphragm 3 between elastic lamellar rods 8 in the form of receiving- and o- injection chamber 5, filled with reservoir fluid. The receiving chamber 5, lifting together with the elastic lamellar 8 and ball pushers 9, enters the constrictor 10 of the housing 2. At the same time, without fitting the tubular constrictor 10 along the cross section diameter, the chamber 5 is crushed, it lifts pressure, the injection valve 7 opens and the well fluid flows from the receiving-injection chamber into the column of hollow rods 4 and further into the collection system (not shown).

During the course of the column of hollow rods 4 down, the discharge valve 7 is closed and the receiving-injection chamber 5, the exit from the tubular constriction 10 of the housing 2, restores its original configuration. In this case, due to the emptying of the receiving-injection chamber, the pressure in it is less than the pressure of the liquid column, under which the diaphragm pump is immersed. Suction valve 6 opens and well fluid

0 enters the receiving-injection chamber 5, fill it.

Then the cycle of the diaphragm pump is repeated.

Claims (3)

5 claims I. A downhole sucker-rod diaphragm pump containing a housing connected to a column of pumping pipes and a flexible elastic diaphragm connected to a hollow column of rods made in the form of an injection-pressure chamber and mounted with its outer surface to interact with and its upper parts are installed, respectively, suction and discharge valves, characterized in that, in order to expand the functional possibilities, the tubular elastic diaphragm is provided with an elastic layer nchatymi connecting rods that are linked with the nodes of the suction and discharge valves and having pushers and 45 the housing is provided with a tubular constrictor, and the tubular elastic diaphragm is installed with the possibility of interaction with the constrictor of the housing through the pushers during the reciprocating movement of the column of hollow rods. 50 2. The pump according to claim 1, about t l and h and you - done5 u and with the fact that the pushers are not ball. 3. Pump pop., Characterized in that the tubular elastic diaphragm is reinforced with a metal mesh.