CN106593835A - Oil well pump capable of adjusting effective stroke - Google Patents
Oil well pump capable of adjusting effective stroke Download PDFInfo
- Publication number
- CN106593835A CN106593835A CN201611167280.0A CN201611167280A CN106593835A CN 106593835 A CN106593835 A CN 106593835A CN 201611167280 A CN201611167280 A CN 201611167280A CN 106593835 A CN106593835 A CN 106593835A
- Authority
- CN
- China
- Prior art keywords
- plunger
- pump barrel
- pump
- oil
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention relates to an oil well pump capable of adjusting effective stroke, and mainly solves the problem of incapability of respectively changing the working displacements of two pumps under the condition of serial connection in the injection and production well production process in a traditional oil well pump. The oil well pump is characterized in that an upper pump cylinder (5) is connected with a lower pump cylinder (8) through a coupling (6); an upper plunger (7) is positioned in the upper pump cylinder (5); the lower end of the upper plunger (7) is connected with an oil outlet valve (10) through a plunger joint (9); the lower end of the oil outlet valve (10) is connected with an oil inlet valve (16) through a plunger assembly (11); the lower end of the oil inlet valve (16) is connected with a lower plunger (18); and an oil leaking tank (22) is formed in the side wall of the lower end of the lower pump cylinder (8). The oil well pump capable of adjusting effective stroke can achieve the purposes of changing the effective stroke and the working displacements through changing relative positions of the plungers and the pump cylinders under the condition of not changing the stroke and the stroke times.
Description
Technical field
The present invention relates to oilfield, specifically a kind of oil well pump of scalable effective stroke.
Background technology
As oil field enters the High water cut productive life, than rapid increase, aqueous being continuously increased causes lifting expense mistake to liquid oil
Height, is accomplished by stopping production closing well close to or up the economic exploitation limit when aqueous, affects field output；Simultaneously because profit treating capacity
Cumulative year after year, a large amount of output waters are circulated through long-range, cause gathering system energy consumption to increase, and ground engineering construction workload increasingly increases
It is many.
Downhole oil-water separation single-well injection-production technology is to carry out profit with the Produced Liquid of downhole oil-water separation equipment opposite payzone
Separate, low aqueous Produced Liquid is lifted to ground, while the water isolated is recycled into implanted layer.Therefore in single-well injection-production well
The change of fluid supply capacity and water injection rate demand according to oil reservoir is needed to adjust the discharge capacity of upper and lower two pumps respectively in production process, one
Platform is used for the re-injection of water, an extraction for being used for high oily liq.All kinds of oil well pumps all cannot be realized in two pumps in series in the past
In the case of change respective work discharge capacity respectively.
The content of the invention
In order to overcome existing oil well pump realize in the case of two pumps in series in single-well injection-production well production process
Change the deficiency of respective work discharge capacity respectively, the present invention provides a kind of oil well pump of scalable effective stroke, and the scalable has
The oil well pump of effect stroke not changing oil pumping pump stroke, in the case of jig frequency, by the relative position for changing plunger and pump barrel, just
The purpose for changing oil well pump effective stroke and work discharge capacity can be reached.
The technical scheme is that：A kind of oil well pump of scalable effective stroke, including pump barrel assembly, assembly for plunger,
The pump barrel assembly includes pump barrel, lower pump barrel, and the upper pump barrel is built-in with upper prop by the lower pump barrel of box cupling connection, upper pump barrel
Plug, upper plug lower end are connected with fuel-displaced valve by plunger connector, and fuel-displaced valve lower end connects oil-feed valve by assembly for plunger,
Oil-feed valve lower end connects lower plunger；Drain pan is provided with the lower pump barrel lower end inner wall.
The upper plug upper end passes through top connection connecting pole end valve cover beyond the Great Wall, and upper plug lower end is connected with by plunger connector
Fuel-displaced valve, fuel-displaced valve lower end connect assembly for plunger, assembly for plunger lower end be sequentially connected delivery connection, trombone slide box cupling, pipe close,
Rotary apparatuss, box cupling, the box cupling lower end connect oil-feed valve, and the oil-feed valve lower end connects lower plunger by lower contact,
Lower plunger lower end connection plunger lower end valve bonnet；Several radial direction clearance holes are provided with the wall of the upper plug side.
The upper pump barrel external connection box cupling, box cupling upper end connected pipes pipe nipple, tubing nipple upper end connected pipes hoop hoop；
Pump barrel under the box cupling lower end connection, lower pump barrel lower end connects another tubing coupling.
The present invention has the advantages that：Due to taking such scheme, inside lower pump barrel lower end, drain pan is provided with, which is opened
Groove location is located at the pump barrel bottom of lower plunger lower end, can effectively prevent lower plunger in motor process as unexpected pressure release is produced
The damage that raw liquid hit phenomenon is caused to oil well pump oil-feed valve；Simultaneously in the range of full stroke, a part of stroke pump efficiency is zero,
A part of stroke is effective, so as in the case where oil pumping pump stroke, jig frequency is not changed, by the relative position for changing plunger and pump barrel
Put, just can reach the purpose for changing oil well pump effective stroke and work discharge capacity.
Description of the drawings
Fig. 1 is the structural representation of the present invention, wherein figure a, b, c are respectively and are sequentially connected the upper, middle and lower segment for connecing.
1- its upper ends valve bonnet in figure, 2- top connections, 3- tubing couplings, 4- tubing nipples, the upper pump barrels of 5-, 6- connect
Hoop, 7- upper plugs, pump barrel under 8-, 9- plunger connectors, the fuel-displaced valves of 10-, 11- assembly for plunger, 12- delivery connections,
13- trombone slide box cuplings, 14- pipe closes, 15- box cuplings, 16- oil-feed valves, 17- lower contacts, 18- lower plungers, under 19- plungers
End valve cover, 20- rotary apparatuss, 21- radial direction clearance holes, 22- drain pans.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of oil well pump of scalable effective stroke, including pump barrel assembly, assembly for plunger 11, the pump barrel assembly
Including upper pump barrel 5, lower pump barrel 8, upper pump barrel 5 is short pump barrel, and lower pump barrel 8 is long pump barrel, 5 external connection box cupling 6 of the upper pump barrel,
6 upper end connected pipes pipe nipple 4 of box cupling, 4 upper end connected pipes hoop hoop 3 of tubing nipple；The lower pump barrel 8 of 6 lower end of box cupling connection, under
8 lower end of pump barrel connects another tubing coupling, is provided with drain pan 22 in 8 bottom side of the wall of lower pump barrel.
Upper plug 7 is equipped with inside the upper pump barrel 5, several radial direction clearance holes 21 is provided with 7 side wall of upper plug, is radially gone out
Sand hole 21 can be horizontal, or acclivitous, be more conducive to sediment outflow when radial direction clearance hole 21 is inclined upwardly.Institute
State 7 upper end of upper plug and pass through 2 connecting pole of top connection end valve cover 1 beyond the Great Wall, 7 lower end of upper plug is connected with by plunger connector 9 fuel-displaced
Valve 10,10 lower end of fuel-displaced valve connection assembly for plunger 11, wherein fuel-displaced valve 10 can also be arranged on the top of upper plug 7.
11 lower end of assembly for plunger is from top to bottom sequentially connected delivery connection 12, trombone slide box cupling 13, pipe close 14, rotary apparatuss 20, box cupling 15,
15 lower end of box cupling connection oil-feed valve 16,16 lower end of oil-feed valve connects lower plunger 18, lower prop by lower contact 17
18 lower ends connection plunger lower end valve bonnet 19 is filled in, wherein inlet valve 16 can also be arranged on the lower section of lower plunger 18.
Described upper plug 7 is coordinated with upper pump barrel 5, and lower plunger 18 is coordinated with lower pump barrel 8, and assembly for plunger 11 is in sucker rod
Pump under drive, the fluid of down-hole passes through the radial direction feed liquor on the plunger lower end valve bonnet 19 of 11 lower end of assembly for plunger
Hole is entered in assembly for plunger 11, after oil-feed valve 16, fuel-displaced valve 10, is arranged by the raidal drainage hole of its upper end valve bonnet 1
Go out.
The oil well pump is provided with drain pan 22 inside the lower end of lower pump barrel 18, and drain pan 22 is opened on 18 inwall of lower pump barrel,
It is not communicated with outside, its slotting position is located at the pump barrel bottom of 18 lower end of plunger, when lower plunger 18 is transported in the range of drain pan 22
When dynamic, pump efficiency is zero, and after lower plunger 18 leaves drain pan 22, oil well pump recovers just producing pump efficiency, by adjusting lower plunger on ground
18 relative positions in the pump barrel assembly, thus it is possible to vary effective working distance of the lower plunger 18 in a stroke range, so as to
Realize changing the purpose of oil well pump effective stroke and work discharge capacity in the case where oil pumping pump stroke, jig frequency is not changed.Oil well pump
In the course of the work, 18 top of lower plunger is highly pressurised liquid, when lower plunger 18 enters the moment of drain pan 22, top highly pressurised liquid
Meeting low-pressure end of the high velocity stream to 18 bottom of lower plunger, produces liquid hit phenomenon, and the bottom valve 16 of oil well pump is caused to damage.For this
The slotting position of drain pan 22 is located at into the lower pump barrel bottom of 18 lower end of lower plunger, lower plunger 18 only has descending process middle and upper part liquid
Body is just to 18 lower flow of lower plunger.During oil well pump is descending, 18 lower liquid of lower plunger is compressed in high pressure conditions,
It is when about 18, liquid is connected lower plunger by drain pan 22, slow all in high pressure conditions flow rate of liquid, effectively can prevent
Only due to damage that the liquid hit phenomenon produced by unexpected pressure release is caused to oil well pump valve 16 in 18 motor process of lower plunger.
The oil well pump is composed in series by the different pump footpaths of Ф 57,70 two kinds of Ф, and the pump connects one in 70 pump barrel lower ends of lower pump Ф
Root groove milling pump barrel, realizes that when plunger works in groove milling pump barrel pump efficiency is 0%, that is, does not go out liquid process in working.According to oil well
Demand, adjusts dead space distance, plunger can be proposed groove milling pump barrel, work, realize feed liquor process in 70 pump barrels of Ф, both to have
Effect stroke.Ф 57,70 pump barrels of Ф are fixed on pump and hang position, and sucker rod drives 57 long-plunger assemblies of Ф, rotation pipe close, 70 plungers of Ф
The upper and lower motion of the parts such as assembly, upstroke are feed liquor process, and down stroke goes out liquid process, and the pump is extraction pump, when the pump is in low
During pump efficiency, injection pump will produce the more water injection re-injection layers in layer, reduce the water content of Produced Liquid, realize improving re-injection layer
Swept volume, so as to improve connected well harvest efficiency.
Claims (3)
1. a kind of oil well pump of scalable effective stroke, including pump barrel assembly, assembly for plunger（11）, the pump barrel assembly includes
Pump barrel（5）, lower pump barrel（8）, it is characterised in that：The upper pump barrel（5）By box cupling（6）The lower pump barrel of connection（8）, upper pump barrel（5）
It is built-in with upper plug（7）, upper plug（7）Lower end passes through plunger connector（9）It is connected with fuel-displaced valve（10）, fuel-displaced valve（10）Under
End is by assembly for plunger（11）Connection oil-feed valve（16）, oil-feed valve（16）Lower end connects lower plunger（18）；The lower pump barrel
（8）Drain pan is provided with lower end inner wall（22）.
2. the oil well pump of scalable effective stroke according to claim 1, it is characterised in that：The upper plug（7）Upper end
By top connection（2）Connecting pole end valve cover beyond the Great Wall（1）, upper plug（7）Lower end passes through plunger connector（9）It is connected with fuel-displaced valve
（10）, fuel-displaced valve（10）Lower end connects assembly for plunger（11）, assembly for plunger（11）Lower end is sequentially connected delivery connection（12）, draw
Pipe box cupling（13）, pipe close（14）, rotary apparatuss（20）, box cupling（15）, the box cupling（15）Lower end connects oil-feed valve（16）, institute
State oil-feed valve（16）Lower end passes through lower contact（17）Connection lower plunger（18）, lower plunger（18）Lower end connection plunger lower end valve bonnet
（19）；The upper plug（7）Several radial direction clearance holes are provided with the wall of side（21）.
3. the oil well pump of scalable effective stroke according to claim 2, it is characterised in that：The upper pump barrel（5）It is outside
Connection coupling（6）, box cupling（6）Upper end connected pipes pipe nipple（4）, tubing nipple（4）Upper end connected pipes hoop hoop（3）；It is described to connect
Hoop（6）The lower pump barrel of lower end connection（8）, lower pump barrel（8）Lower end connects another tubing coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611167280.0A CN106593835B (en) | 2016-12-16 | 2016-12-16 | A kind of oil well pump of adjustable effective stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611167280.0A CN106593835B (en) | 2016-12-16 | 2016-12-16 | A kind of oil well pump of adjustable effective stroke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593835A true CN106593835A (en) | 2017-04-26 |
| CN106593835B CN106593835B (en) | 2018-06-01 |
Family
ID=58599507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611167280.0A Active CN106593835B (en) | 2016-12-16 | 2016-12-16 | A kind of oil well pump of adjustable effective stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593835B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012912A (en) * | 2019-05-29 | 2020-12-01 | 中国石油天然气股份有限公司 | Long-stroke oil well pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040953U (en) * | 1988-11-21 | 1989-07-12 | 大庆石油管理局采油工艺研究所 | Series pump device |
| CN2049283U (en) * | 1989-04-28 | 1989-12-13 | 河南石油勘探局采油工艺研究所 | Displacement-varying thick oil pump |
| CN2049282U (en) * | 1988-02-10 | 1989-12-13 | 吉林省油田管理局机修总厂 | Reciprocating liquid-discharging sucker rod pump capable of draining oil |
| CN200955491Y (en) * | 2006-09-13 | 2007-10-03 | 辽河石油勘探局 | Air-lock-resisting low-resistance liquid drainage pump |
| US20120114510A1 (en) * | 2007-01-29 | 2012-05-10 | Brown T Leon | Reciprocated Pump System for Use in Oil Wells |
| CN202560525U (en) * | 2011-09-20 | 2012-11-28 | 中国石油化工股份有限公司 | Variable displacement fracturing and swabbing combined pump |
-
2016
- 2016-12-16 CN CN201611167280.0A patent/CN106593835B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049282U (en) * | 1988-02-10 | 1989-12-13 | 吉林省油田管理局机修总厂 | Reciprocating liquid-discharging sucker rod pump capable of draining oil |
| CN2040953U (en) * | 1988-11-21 | 1989-07-12 | 大庆石油管理局采油工艺研究所 | Series pump device |
| CN2049283U (en) * | 1989-04-28 | 1989-12-13 | 河南石油勘探局采油工艺研究所 | Displacement-varying thick oil pump |
| CN200955491Y (en) * | 2006-09-13 | 2007-10-03 | 辽河石油勘探局 | Air-lock-resisting low-resistance liquid drainage pump |
| US20120114510A1 (en) * | 2007-01-29 | 2012-05-10 | Brown T Leon | Reciprocated Pump System for Use in Oil Wells |
| CN202560525U (en) * | 2011-09-20 | 2012-11-28 | 中国石油化工股份有限公司 | Variable displacement fracturing and swabbing combined pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012912A (en) * | 2019-05-29 | 2020-12-01 | 中国石油天然气股份有限公司 | Long-stroke oil well pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106593835B (en) | 2018-06-01 |
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