RU105357U1 - Double double double pump - Google Patents

Double double double pump Download PDF

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Publication number
RU105357U1
RU105357U1 RU2011102116/03U RU2011102116U RU105357U1 RU 105357 U1 RU105357 U1 RU 105357U1 RU 2011102116/03 U RU2011102116/03 U RU 2011102116/03U RU 2011102116 U RU2011102116 U RU 2011102116U RU 105357 U1 RU105357 U1 RU 105357U1
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RU
Russia
Prior art keywords
pump
plunger
cylinder
pumps
channel
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RU2011102116/03U
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Russian (ru)
Inventor
Денис Николаевич Красноборов
Игорь Иванович Мазеин
Сергей Михайлович Недопекин
Валерий Витальевич Пепеляев
Александр Сергеевич Хабибуллин
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Общество с ограниченной ответственностью "ЛУКОЙЛ-ПЕРМЬ"
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Priority to RU2011102116/03U priority Critical patent/RU105357U1/en
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Publication of RU105357U1 publication Critical patent/RU105357U1/en

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Abstract

 A double deep sucker rod pump for producing products from a well with two productive formations, comprising two sucker pumps connected to the lift pipe string and the sucker rod string, the lower pump of which has a suction valve at the inlet of its extension cylinder and a discharge valve at the inlet of its plunger, and its upper pump along the outer surface has a side channel - a bypass, in which a suction valve is installed at the inlet to its central through channel and a discharge valve at the outlet of it, connected Avically with the installation cavity, the hollow plungers of both pumps are connected coaxially with the hollow sucker rod with the possibility of passage through its through channel of fluid flow from the lower layer through the column of hollow rods to the discharge, while the suction cavity of the upper pump, including the interplunger region, an annular gap between the outer surface of the hollow rod and the inner surfaces of the cylinders of the upper and lower pumps, as well as the inner surface of the thrust nipple and the outer surface of the cylinder with bypass, is hydraulically connected to the suction cavity of the upper pump through the through holes in the nipple sub, characterized in that through holes for bleeding the gas from the intake of the lower pump are made in the side walls of the plunger of the lower pump, while a plunger-packer is installed between the upper and lower pumps in the form two cylinders, external and internal, concentrically mounted to each other with the possibility of sliding along the lateral surfaces of each other along the central axis, while the inner cylinder of the plunger-pack

Description

The utility model relates to the oil industry, in particular, to devices for simultaneously and separately operating two layers of the same well with two sucker rod pumps in hydrocarbon deposits with hard to recover reserves.
A well-known sucker rod pumping unit for simultaneous and separate oil production from two layers (RF patent No. 95756, class IPC F04B 47/00, published date 07/10/2010), including a packer disconnecting the upper and lower layers, two pumps connected in series, the upper and lower, each of which contains a plunger and a cylinder, while the lower pump plunger is made with a diameter smaller than the diameter of the upper pump plunger, the lower pump cylinder is made with a diameter smaller than the diameter of the upper pump cylinder, each of the pumps is equipped with a suction and discharge valves, while the suction valve for taking fluid from the upper reservoir is located on the side in the lower part of the larger cylinder, and in the plunger of the lower pump directly under the discharge valve there is a two-position switch that interacts with the rod located in the lower part of the lower pump cylinder above the suction valve.
The disadvantage of this design is that the products from both strata are directed to the outflow through the elevator channel and do not allow to determine the flow rates of each of the strata separately.
Known pumping unit for simultaneous separate operation of two layers in the well (Options) (RF patent No. 49573, class IPC ЕВВ 43/14, publication date 27.11.2005), including a column of elevator pipes, a column of hollow rods, a packer and two sequentially installed sucker rod pumps with corresponding suction and discharge valves, the plungers with internal channels of which are connected by a rod that is sealed from the bottom of the cylinder of the upper pump, and the intake of the lower pump through its suction valve and shank is communicated with sub space, and the intake of the upper pump through its suction valve is communicated with the over-packer space, while the rod connecting the plungers is hollow with the possibility of communicating the internal channels of the plunger of the rod pumps with the internal cavity of the rods, forming the lower pump with the discharge valve of the lower pump, the upper pump is made annular, equipped with a channel and a hollow rod sealing assembly installed above the upper pump and uncoupling the cavity of the upper pump and lift pipes, an additional channel, all by suction and discharge valves, and the outflow of the upper pump through its discharge valve communicates with the cavity of the lift pipes, and the sub-plunger cavity of the upper pump through the additional suction valve communicates with the overpack space, and through the additional discharge valve and channel with the cavity of the lift pipes.
The disadvantage of this installation is that the sealing unit is made in the form of a plunger pair.
The closest in technical essence is the installation for simultaneous - separate operation of two layers in the well (RF patent No. 59138, CL ЕВВ 43/14, publication date 10.12.2006), including a lift pipe string, hollow rod string, packer, two in series installed sucker-rod pumps with a suction valve at the intake from the upper layer and a discharge valve on the ejection into the annular cavity of the column of elevator pipes, and the lower pump has a suction valve at the inlet to its fluid cylinder from the lower layer and a discharge valve at the inlet to the plunger, while the hollow plungers of both pumps are connected by a hollow rod with the possibility of flow from the lower layer through the through channel to the cavity of the column of hollow rods and then to the surface in the flow line, while around the hollow rod of the upper pump an interplunger cavity of variable cross section is defined, bounded from above the lower end of the plunger of the upper pump, the lower-upper end of the plunger of the lower pump, the outer surface of the hollow pump rod and the inner surfaces of the connecting pipe and upper cylinders th and bottom pumps. The interplunger cavity communicates through the inlet valve with the annular over-packer space, and through the bypass - with the discharge valve located in it, communicates with the tubing cavity of the tubing string, while the interplunger cavity, changing in volume due to the input-output of plungers with different diameters into it, in the case of the use of an upper pump of a larger diameter, it is the suction cavity, and the discharge cavity is the lift cavity of the tubing string.
The disadvantage of this design is the significant dimensions of the installation, as well as a significant amount of inoperative area of the upper pump.
The purpose of creating this utility model is to provide isolation of flows entering the pumping unit from the upper and lower reservoirs being developed.
The technical result of the proposed design is to reduce the dimensions of the pump-to-pump installation to 30% of the length compared to the analogue, increase the fill rate of the upper pump from 0.4 to 0.7 by reducing its idle volume, and reducing the gas component when the produced fluid is ejected from lower layer.
This technical result is ensured due to the fact that as a sealing unit for flows from the upper and lower layers in the cylinder cavity, a plunger-packer is installed between the upper and lower pumps, made in the form of two cylinders, an external and an internal, concentrically installed with the possibility of sliding along each other's lateral surfaces along a central axis, wherein the inner cylinder of the plunger-packer is threadedly connected to the cylinder of the lower pump, and the outer cylinder of the plunger-packer is connected ezbovym compound with the upper cylinder of the pump housing via a side channel (bypass) that leads to a reduction of its dimensions.
The technical result is also achieved by the fact that in the side walls of the plunger of the lower pump there are through holes for bleeding gas from the intake of the lower pump.
The deep rod double pump installed in the column of elevator pipes includes an upper pump 1, a lower pump 2. The upper rod pump 1 comprises a cylinder 3 with a stop 4 mounted in its upper part, and inside the cylinder 3, with the possibility of sliding along its inner side surface, concentrically installed plunger 5 of the upper pump 1. From the side of the wellhead and from the side of the bottom, the plunger 5 is concentrically connected by a threaded connection to the column of hollow rods 6, to the external thread of the lower part of which is connected a plunger 7 with through With holes 8 in its walls, as well as with a pressure valve 9 installed at its inlet. The outer lateral surface of the plunger 7 can slide along the inner lateral cylindrical surface of the cylinder 10, as well as along the inner cylindrical surface of the extension 11 of the lower pump 2. At the inlet an extension cord 11 hydraulically connected to the lower layer of the produced fluid, an inlet suction valve 12 is installed. To the outer side surface of the cylinder 10 of the lower pump 2 from the side of the wellhead is concentrically connected a threaded connection of the plunger-packer 13 of a cylindrical shape, on the outer side surface of which is mounted cylindrically with the possibility of sliding along the lateral surfaces of each other, the cylinder 14 of the plunger-packer 13 of the lower pump 2.
The cylinder 3 of the upper pump 1 is connected to the cylinder 10 of the lower pump 2 by means of a threaded nipple 15 connected in series with each other by a threaded connection 15 and a nipple sub 16, in the walls of which there are through holes 17. The outer cylinder 14 of the plunger-packer 13 is connected by an external threaded connection to the lower part a cylindrical body 18 having a lateral additional channel (bypass) 19, when fluid enters from the upper layer into the central channel of which a suction valve 20 is installed, while this central channel is laterally of the bypass 19 is hydraulically connected to the sub 16 through the openings 17, and a pressure valve 21 is installed in the upper part of the central channel of the bypass 21. From the side of the wellhead, ring elements 22 and 23 are installed on the outer lateral surface of the thrust nipple 15, providing separation of the suction cavity A and the injection cavity Used top pump.
Sucker rod dual pump operates as follows.
The work of the lower pump: When the column of hollow rods 6 moves up, the production of the lower layer through the suction valve 12, with the valve 9 closed, fills the internal volume of the extension 11 and cylinder 10, entering the plunger region of the plunger 7 of the lower pump 2.
When the column of hollow rods 6 moves down, the valve 12 of the lower pump 2 blocks the possibility of fluid flow from the sub-plunger area back to the lower layer, and under the influence of the plunger 7 of the lower pump on the liquid located in the sub-plunger area, it opens the pressure valve 9, and rising along the inner the channel of the column of hollow rods 6, enters the installation discharge. At the same time, part of the gas cap coming from the lower reservoir with the liquid exits through the lateral openings 8 of the plunger 7 of the lower pump at the moment when the zone of the plunger 7 with openings 8 moves to the pump extension 11, reducing the gas component of the liquid on the discharge.
The operation of the upper pump: When the column of hollow rods 6 is up, the plunger of the upper pump 5 reaches the stop 4, while the production of the upper layer through the suction valve 20 of the side bypass 19, the through channels 17 in the walls of the sub 16 of the upper pump 1 enters the suction cavity A, comprising an interplunger region, an annular gap between the inner surface of the housing 18 and the outer lateral surface of the thrust nipple 15, and the inner surface of the nipple 15 and the outer surface of the hollow rod 6.
When the column of hollow rods 6 is downward, the suction valve 20 closes, blocking the fluid flow from the suction cavity of the upper pump 1 back to the upper layer, while the liquid squeezed out by the plunger 5 of the upper pump from the interplunger space is directed through the through holes 17 of the adapter 16 into the internal channel bypass 19 and, passing through the opened pressure valve 21, enters the discharge cavity B of the column of elevator pipes, and then to the discharge.
The fluid flows coming from different layers in the cavity of the upper 1 and lower 2 pumps are hermetically separated by the plunger-packer 13 with the outer cylinder 14 of the plunger-packer installed on it. A pair of plunger-packer 13 and cylinder 14 is moved relative to each other during installation-dismantling of the double rod pump, remaining stationary in the operating mode of the installation and ensuring tightness when separating the fluid coming from different layers.

Claims (3)

  1. A double deep sucker rod pump for producing products from a well with two productive formations, comprising two sucker pumps connected to the lift pipe string and the sucker rod string, the lower pump of which has a suction valve at the inlet of its extension cylinder and a discharge valve at the inlet of its plunger, and its upper pump along the outer surface has a side channel - a bypass, in which a suction valve is installed at the inlet to its central through channel and a discharge valve at the outlet of it, connected Avically with the installation cavity, the hollow plungers of both pumps are connected coaxially with the hollow sucker rod with the possibility of passage through its through channel of fluid flow from the lower layer through the column of hollow rods to the discharge, while the suction cavity of the upper pump, including the interplunger region, an annular gap between the outer surface of the hollow rod and the inner surfaces of the cylinders of the upper and lower pumps, as well as the inner surface of the thrust nipple and the outer surface of the cylinder with bypass, is hydraulically connected to the suction cavity of the upper pump through the through holes in the nipple sub, characterized in that through holes for bleeding gas from the intake of the lower pump are made in the side walls of the plunger of the lower pump, while a plunger-packer is installed between the upper and lower pumps in the form two cylinders, external and internal, concentrically mounted to each other with the possibility of sliding along the lateral surfaces of each other along the central axis, while the inner cylinder of the plunger-packer and it is connected by a threaded connection to the cylinder of the lower pump, and the outer cylinder of the plunger-packer is connected by a threaded connection to the cylinder of the upper pump by means of a housing with a side bypass channel.
  2. 2. The double deep sucker rod pump according to claim 1, characterized in that the side channel-bypass of the housing connecting the cylinders of the upper and lower pumps has a through channel with a continuous section between the suction and pressure valves of the upper pump.
  3. 3. The sucker rod deep double pump according to claim 1, characterized in that the node separating the suction cavity and the discharge cavity of the upper pump is made in the form of ring elements.
    Figure 00000001
RU2011102116/03U 2011-01-20 2011-01-20 Double double double pump RU105357U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2011102116/03U RU105357U1 (en) 2011-01-20 2011-01-20 Double double double pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2011102116/03U RU105357U1 (en) 2011-01-20 2011-01-20 Double double double pump

Publications (1)

Publication Number Publication Date
RU105357U1 true RU105357U1 (en) 2011-06-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU2011102116/03U RU105357U1 (en) 2011-01-20 2011-01-20 Double double double pump

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RU (1) RU105357U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2696837C1 (en) * 2018-06-01 2019-08-06 Общество с ограниченной ответственностью "Региональный научно-технологический центр Урало-Поволжья", ООО "РНТЦ Урало-Поволжья" Sucker-rod subsurface piston pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2696837C1 (en) * 2018-06-01 2019-08-06 Общество с ограниченной ответственностью "Региональный научно-технологический центр Урало-Поволжья", ООО "РНТЦ Урало-Поволжья" Sucker-rod subsurface piston pump

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Effective date: 20111213