SU1288347A1 - Well sucker-rod pumping unit - Google Patents

Abstract

The invention relates to the technique of oil production and m. used when pumping high-viscous reservoir fluids from wells under conditions of suspension of a string of sucker rods (W). The invention improves reliability. Section of the column (/)

Description

Pumping bars 4 between standard and conventional bars 8 and 7 are provided with a perforated pipe (П) 9. The latter is made with an internal annular ledge 10. The discharge valve 6 is installed under the openings 11 П 9 with the possibility of its retention on the ledge 10. During reciprocating the movement of interconnected pumping columns Ш 4, perforated П 9, ut desired. Ш 8 and plunger 3

one

The invention relates to a technique for oil production, in particular, to well pumping units, and can be used in the oil industry when pumping high-viscosity formation fluids from wells under conditions of suspension of a pump rod string.

The purpose of the invention is to increase reliability.

The drawing schematically shows a well pumping unit, general view.

The installation comprises a rod pump 2 connected to the column of pumping pipes 1, the plunger 3 of which is connected to the drive 5 through the column of pumping rods 4, and a discharge valve 6, and in the column of the pumping rods 4 between the ordinary rods 7 and the plunger 3 B .-. The spindle of the column of pumping rods between the fitted 8 and the usual 7 rods is provided with an additional perforated pipe 9 installed on it with an inner annular ledge 10, the discharge valve 6 is installed under the perforated versus 11 pipes 9 ozmozhnos

hold on ring ledge

to. The cavities of the perforated pipe 9 and the plunger 3 communicate with each other through a channel 12, which is made inside the ut jelly rods 8. In the cylinder 13 of the sucker rod pump 2, there are aspirated 35 1 valve 14.

A borehole sucker pump unit operates as follows.

oil is periodically poured from cylinder 13 through channel 12, made in Ø 8, into the column of pumping pipes 1 and further into the flow line. At the same time, the valve 6 placed inside the moving P 9 promotes an increase in the bore of its seat. This makes it possible to reduce hydraulic resistances to movement of the pumping pumps downwards and, consequently, to reduce its lag. 1 il.

During the reciprocating movement of interconnected columns of pump rods 4, perforated pipe 9, ut of rods 8 and plunger 3 of sucker pump 2, viscous formation fluid — oil is periodically poured from the cylinder 13 of the pump through channel 12 into the rods 8 in the column of pumping pipes 1 and further into the discharge line (not indicated). At the same time, the discharge valve 6 placed inside the moving pipe 1 of the perforated pipe 9 in the column increases the bore of its seat (not indicated), this reduces the hydraulic resistance to the movement of the rod of the pump rods downwards and, as a result, reduces its hanging.

Claims (1)

Invention Formula A well pumping unit, comprising a pumping pump connected to the pumping pipe string, the plunger of which is connected to the actuator through the pumping rod string and a pressure valve, and in the pumping rod string, between the usual rods and the plunger, there are separate rods that differ from that, in order to increase reliability, the part of the column of pump rods between conventional and extended rods is provided with an additionally installed perforated pipe with an internal annular protrusion; Single valve set31288347 flax under the perforations of the perforated nozzle and the nozzle plunger with the ability to hold are interconnected through the ring protrusion, and the hollow channel inside the rod Compiled by E.Ginzburg. , Editor O. Yurkovetska Tehred V. Kadar Proofreader I. Musk Order 7784/30 Circulation 596 Subscription VNIIPI USSR State Committee. for inventions and discoveries P3035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4