CN107218013A - A kind of laddering synchronous oil recovery method and a kind of laddering multistage simultaneous pumping system pump - Google Patents
A kind of laddering synchronous oil recovery method and a kind of laddering multistage simultaneous pumping system pump Download PDFInfo
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- CN107218013A CN107218013A CN201710062566.0A CN201710062566A CN107218013A CN 107218013 A CN107218013 A CN 107218013A CN 201710062566 A CN201710062566 A CN 201710062566A CN 107218013 A CN107218013 A CN 107218013A
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- 238000005086 pumping Methods 0.000 title claims abstract description 88
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000011084 recovery Methods 0.000 title claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 97
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 239000013589 supplement Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000003129 oil well Substances 0.000 description 4
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
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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
- F04B3/00—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
-
- 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
- F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
-
- 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
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
-
- 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
- F04B53/14—Pistons, piston-rods or piston-rod connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention belongs to a kind of oil production method and equipment, it is related to a kind of laddering synchronous oil recovery method and laddering multistage simultaneous pumping system pump.Method is that full stroke is divided into equidistant several sections, every section of pump barrel single-stage plunger and is pumped into well head by well liquid is synchronously laddering under oil pumping wire saws.Multiple single-stage pump barrel A are connected with setting body, box cupling and downhole hardware is constituted pump barrel assembly；Go out liquid set to be connected the spacing composition sliding spool A of the sealing block of built-in o-ring with slip cap；Center-pole upper end is equipped with sheath and connecting shaft A, and there is fixing nut A its lower end；Spring, pressure release set, sliding spool A are sleeved on center-pole；Constitute single-stage plunger A；The bulb of built-in wear-resisting set is placed on valve seat, is limited with nut；Valve bonnet overcoat lock ring and sealing ring；Seal is connected with ball handle, sealing block A and spring housing built in its cavity, is connected with nut B, constitutes unidirectional valve assembly；The sucker rod for being set with unidirectional valve assembly is connected with two single-stage plunger A, constitutes Multi-stage plunger assembly；Lock ring is locked with setting body.
Description
Technical field
The invention belongs to a kind of oil production method and equipment, more particularly to a kind of laddering synchronous oil recovery method and a kind of progressive
Formula multistage simultaneous pumping system pump.
Background technology
At present, full stroke oil production method is used the oil production method of domestic ultra-long-stroke oil well pump, in well head flexible oil pumping more
Under the traction of rope, the plunger of oil well pump lifts well liquid to well head from shaft bottom, and well liquid is squeezed into industrial pipeline.Have the disadvantage that plunger is run
Apart from long, rapid wear, and plunger is in the lifting compared with long stroke, because the fit clearance between plunger and pump barrel is not easily-controllable
System, causes that well liquid wastage is more, and pump efficiency is low.
The content of the invention
It is an object of the invention to provide a kind of laddering oil production method and a kind of laddering multistage simultaneous pumping system pump, by full well
Stroke is divided into equidistant several sections of strokes, using each single-stage plunger in the corresponding pump barrel of every section of stroke by well liquid by next stage
Pump barrel is synchronously uploaded in upper level pump barrel step by step, and finally well liquid lifting is squeezed into well by the single-stage plunger in most upper level pump barrel
The industrial pipeline of mouth, shortens the stroke distance of the single-stage plunger in every section of pump barrel, reduces wastage, improves pump efficiency, extends plunger
Service life.
Technical scheme：A kind of laddering multistage synchronous oil recovery method,
(1) full well pump cylinder is divided into equidistant several sections of pump barrels, single-stage plunger built in every section of pump barrel, each single-stage with setting body
Plunger is concatenated with the sucker rod for being set with unidirectional valve assembly, is hung with well head oil pumping rope, and relief valve is housed on single-stage plunger, is limited single
The well liquid amount of the level each pumping of plunger, prevents sucker rod and well head oil pumping rope from overloading；Unidirectional valve assembly is locked with setting body with lock ring
It is fixed, with seal ring seal；
(2) when first time well head oil pumping rope synchronously transfers each single-stage plunger pumping well liquid, in the most next stage pump barrel of shaft bottom
Well liquid pumping is uploaded in penultimate stage pump barrel thereon by single-stage plunger, the well liquid that unidirectional valve assembly closure is uploaded, and is prevented
Well liquid flows back；Other pump barrel internal causes at different levels are without well liquid, and the single-stage plunger in it does not work；
When (3) second of well head oil pumping rope synchronously transfer each single-stage plunger pumping well liquid, penultimate stage pump barrel and shaft bottom
Single-stage plunger in most next stage pump barrel synchronous pumping well liquid and corresponds to be uploaded to level pump barrel third from the bottom and inverse respectively respectively
In the pump barrel of the second level, the unidirectional valve assembly between each single-stage plunger blocks the well liquid of upload, prevents well liquid from flowing back；In this pumping
During well liquid, the well liquid in penultimate stage pump barrel is uploaded in its upper level level pump barrel third from the bottom, at the same time, is fallen
Well liquid in number second level pump barrel also obtains the supplement that most next stage pump barrel uploads well liquid, realizes laddering upload well liquid；
(4) similarly, well head oil pumping rope drives the single-stage plunger in pump barrels at different levels to be synchronized with the movement, so constantly by underground liquid
Body is laddering step by step to be uploaded, and finally the single-stage plunger in most upper level pump barrel squeezes into industrial pipeline by well liquid pumping to well head；
Relief valve on single-stage plungers at different levels limits the well liquid amount of each single-stage plunger pumping, when the load beyond setting, relief valve
Automatic unloading, it is ensured that the oil pumping rope of sucker rod and well head is not broken because of overload.
A kind of laddering multistage simultaneous pumping system pump, is made up of assembly for plunger and pump barrel assembly；Pump barrel assembly is main by single-stage
Pump barrel A, single-stage pump barrel B, setting body, box cupling A, box cupling D and downhole hardware composition；Two neighboring pump barrel A, pump barrel B and box cupling B's
Two ends constitute single-stage pump barrel A, two neighboring pump barrel C, pump barrel D with box cupling C two ends to be threadedly coupled, constituted to be threadedly coupled
Single-stage pump barrel B；The two ends of two adjacent single-stage pump barrel A, single-stage pump barrel B and setting body to be threadedly coupled, box cupling D two ends with
Pump barrel D lower end and the upper end connection of downhole hardware, box cupling A lower end, to be threadedly coupled, constitutes pump barrel total with pump barrel A upper end
Into.
Assembly for plunger is mainly made up of single-stage plunger A, single-stage plunger A ', unidirectional valve assembly and weight linear meter；Opened on center-pole
There is feed liquor groove；Go out liquid and put to be provided with liquid outlet groove；" O " type ring built in sealing block；The upper/lower terminal of sealing block insert out liquid set and
In the shelves platform of slip cap, go out liquid set with slip cap to be threadedly coupled, sealing block is limited in the slip for constituting one therebetween
Plunger A；The lower end threaded connection fixing nut A of center-pole；During spring, pressure release set, sliding spool A are sleeved on successively from the bottom up
On core bar；Pressure release set and spring composition relief valve；The upper end of center-pole is to be threadedly coupled fixed nylon sheath wire and connecting shaft A, structure
Into single-stage plunger A.
Unidirectional valve assembly is mainly made up of valve bonnet, valve ball, valve seat, nut, seal, resilient sleeve, sealing block A and nut B；
Valve ball bulb separation head and ball handle two parts；Ball handle, the upper surface of valve bonnet, seal, sealing block A, the nut B of valve ball are provided with vertically
Isometrical axially extending bore；The bulb of valve ball is provided with the axial notch more than ball handle axially extending bore；In the bulb axial notch of valve ball
Wear-resistant sleeve is put, the bulb of valve ball is placed in valve bonnet, and valve seat, nut are placed in valve bonnet, below the bulb of valve ball, nut and valve
Cover external screw thread is connected, by the spacing fixation of valve seat；Lock ring and sealing ring are set with the outer tube wall of valve bonnet；Seal is divided to upper and lower two chamber
Body, and its upper cavity with the ball handle of ball valve to be threadedly coupled；Sealing block A and spring housing built in the lower chamber of seal, sealing block A
Constitute sealing sheath with spring housing, nut B with being threadedly coupled within the lower chamber of seal, by spring housing, sealing block A it is spacing
In the lower chamber of seal, unidirectional valve assembly is constituted；Unidirectional valve assembly is sleeved on sucker rod.
Single-stage plunger A ' is identical with single-stage plunger A structures, is set with the sucker rod of unidirectional valve assembly by structure identical two
Single-stage plunger A and single-stage plunger A ' are serially connected, and constitute assembly for plunger；Both, the upper end of sucker rod and single-stage plunger A fixation
Nut A is to be threadedly coupled；The lower end of sucker rod is with single-stage plunger A ' connecting shaft A ' to be threadedly coupled；Single-stage plunger A ' fixation
Nut A ' constitutes assembly for plunger to be threadedly coupled weight linear meter.
The assembly for plunger hung by well head flexible oil pumping rope is placed in pump barrel assembly, and the lock ring and pump barrel of unidirectional valve assembly
The setting body snap ring locking of assembly, with seal ring seal, a kind of laddering multistage simultaneous pumping system pump of composition.
Described assembly for plunger, the sucker rod that unidirectional valve assembly is set with by increasing concatenates single-stage plunger A and single-stage plunger
A ' number increases the series of assembly for plunger；Described pump barrel assembly, can connect single-stage pump barrel A and single-stage by increasing setting body
Pump barrel B number increases the series of pump barrel assembly, and the series of pump barrel assembly is corresponding with the series of assembly for plunger, and composition one kind is passed
Enter the multistage simultaneous pumping system pump of formula.
Described sucker rod is flexible oil pumping rope, and the two ends of flexible oil pumping rope are connected with two connector A, connector A '；
Connector A connecting shaft is threadedly coupled with fixing nut A, connector A ' connecting shaft and single-stage plunger A ' connecting shaft A ' screw threads
Connection.
It is an advantage of the invention that shortening the stroke distance of each single-stage plunger, wastage is advantageously reduced, pump efficiency, extension is improved
Plunger and sucker rod, the service life of oil pumping rope.
Brief description of the drawings
Fig. 1 is a kind of pump barrel assembly structure chart of laddering multistage simultaneous pumping system pump of the present invention；
Fig. 2 is a kind of top half structure chart of the assembly for plunger of laddering multistage simultaneous pumping system pump of the present invention；
Fig. 3 is a kind of the latter half structure chart of the assembly for plunger of laddering multistage simultaneous pumping system pump of the present invention；
Fig. 4 is single-stage plunger A of the present invention structure chart；
Fig. 5 is the structure chart of the unidirectional valve assembly of the present invention.
Embodiment
A kind of laddering multistage synchronous oil recovery method,
(1) full well pump cylinder is divided into equidistant several sections of pump barrels, single-stage plunger built in every section of pump barrel, each single-stage with setting body
Plunger is concatenated with the sucker rod for being set with unidirectional valve assembly, is hung with well head oil pumping rope, and relief valve is housed on single-stage plunger, is limited single
The well liquid amount of the level each pumping of plunger, prevents sucker rod and the overload of well head oil pumping rope；Unidirectional valve assembly is locked with setting body with lock ring
It is fixed, with seal ring seal；
(2) when first time well head oil pumping rope synchronously transfers each single-stage plunger pumping well liquid, in the most next stage pump barrel of shaft bottom
Well liquid pumping is uploaded in penultimate stage pump barrel thereon by single-stage plunger, the well liquid that unidirectional valve assembly closure is uploaded, and is prevented
Well liquid flows back；Other pump barrel internal causes at different levels are without well liquid, and the single-stage plunger in it does not work；
When (3) second of well head oil pumping rope synchronously transfer each single-stage plunger pumping well liquid, penultimate stage pump barrel and shaft bottom
Single-stage plunger in most next stage pump barrel synchronous pumping well liquid and corresponds to be uploaded to level pump barrel third from the bottom and inverse respectively respectively
In the pump barrel of the second level, the unidirectional valve assembly between each single-stage plunger will upload well liquid closure, prevent well liquid from flowing back；In this swabbing well
During liquid, the well liquid in penultimate stage pump barrel is uploaded in level pump barrel third from the bottom, at the same time, penultimate stage pump
Well liquid in cylinder also obtains the supplement that most next stage pump barrel uploads well liquid, realizes laddering upload well liquid；
(4) similarly, well head oil pumping rope drives the single-stage plunger in pump barrels at different levels to be synchronized with the movement, so constantly by underground liquid
Body is laddering step by step to be uploaded, and finally the single-stage plunger in most upper level pump barrel squeezes into industrial pipeline by well liquid pumping to well head；
Relief valve on single-stage plungers at different levels limits the well liquid amount of each single-stage plunger pumping, when the load beyond setting, relief valve
Automatic unloading, it is ensured that the oil pumping rope of sucker rod and well head is not broken because of overload.
Referring to Fig. 1, a kind of laddering multistage simultaneous pumping system pump is made up of assembly for plunger and pump barrel assembly；Pump barrel assembly master
To be made up of single-stage pump barrel A11, single-stage pump barrel B12, setting body 5, box cupling A1, box cupling D9 and downhole hardware 10；Two neighboring pump
Cylinder A2, pump barrel B4, to be threadedly coupled, constitute single-stage pump barrel A11, two neighboring pump barrel C6, pump barrel D8 are with connecing with box cupling B3 two ends
Bind round C7 two ends to be threadedly coupled, constitute single-stage pump barrel B12；Two adjacent single-stage pump barrel A11, single-stage pump barrel B12 with it is setting
The two ends of body 5 are to be threadedly coupled, and box cupling D9 two ends are connected with the upper end of pump barrel D8 lower end and downhole hardware 10, box cupling A1's
Lower end, to be threadedly coupled, constitutes pump barrel assembly with pump barrel A2 upper end.
For accompanying drawing clear in structure, the integrative-structure of assembly for plunger is disconnected, and is divided into upper and lower two parts, is seen Fig. 2, Fig. 3.
Referring to Fig. 2, Fig. 3, Fig. 4, assembly for plunger is mainly by single-stage plunger A40, single-stage plunger A ' 40 ', unidirectional valve assembly 41, weight linear meter 35
Composition；Feed liquor groove is provided with center-pole 36；Go out on liquid set 15 and be provided with liquid outlet groove；" O " type ring 17 built in sealing block 16；Sealing block
16 upper/lower terminal is inserted out in the shelves platform of liquid set 15 and slip cap 18, is gone out liquid set 15 with slip cap 18 to be threadedly coupled, is sealed
Block 16 is limited in the sliding spool A38 for constituting one therebetween；The lower end threaded connection fixing nut A21 of center-pole 36；
Spring 20, pressure release set 19, sliding spool A38 are sleeved on center-pole 36 successively from the bottom up；Pressure release set 19 and spring 20 are constituted
Relief valve 39；The upper end of center-pole 36 constitutes single-stage plunger A40 to be threadedly coupled fixed nylon sheath wire 14 and connecting shaft A13.
Referring to Fig. 2, Fig. 3, Fig. 5, unidirectional valve assembly 41 is main by valve bonnet 24, valve ball 30, valve seat 28, nut 29, seal
31st, resilient sleeve 32, sealing block A33 and nut B34 compositions；The bulb separation head of valve ball 30 and ball handle two parts；Ball handle, the valve bonnet of valve ball 30
24 upper capping, seal 31, sealing block A33, nut B34 are provided with isometrical axially extending bore vertically；The bulb of valve ball 30 is opened
There is the axial notch more than ball handle axially extending bore；The bulb axial notch built-in wear-resisting set 25 of valve ball 30, the bulb of valve ball 30 is put
In in valve bonnet 24, valve seat 28, nut 29 are placed in valve bonnet, below the bulb of valve ball 30, nut 29 and the external screw thread of valve bonnet 24
Connection, by the spacing fixation of valve seat 28；Lock ring 26 and sealing ring 27 are set with the outer tube wall of valve bonnet 24；31 points upper and lower two of seal
Cavity, and its upper cavity with the ball handle of ball valve 30 to be threadedly coupled；Sealing block A33 and spring housing built in the lower chamber of seal 31
32, sealing block A33 and spring housing 32 constitute sealing sheath, and nut B34 within the lower chamber of seal 31 with being threadedly coupled, by bullet
Spring set 32, sealing block A33 are spacing in the lower chamber of seal 31, constitute unidirectional valve assembly 41；Unidirectional valve assembly 41 is sleeved on
On sucker rod 23, the sealing sheath that sealing block A33 and spring housing 32 are constituted prevents from taking out to 23 sealings of sucker rod and protective effect
Beam hanger 23 is damaged with nut A34 hard grinds, reduces the leakage of sucker rod 23.
Referring to Fig. 2, Fig. 3, single-stage plunger A ' 40 ' is identical with single-stage plunger A40 structures, is set with the oil pumping of unidirectional valve assembly 41
Two single-stage plunger A40 of bar 23 and structure identical and single-stage plunger A ' 40 ' are concatenated；Both, the upper end of sucker rod 23 and single-stage post
Fill in A40 fixing nut A21 threaded connections；The lower end of sucker rod 23 connects with the single-stage plunger A ' 40 ' screw threads of connecting shaft A ' 13 '
Connect；Single-stage plunger A ' 40 ' fixing nut A ' 21 ' constitutes assembly for plunger to be threadedly coupled weight linear meter 35.
The assembly for plunger being suspended on well head flexible oil pumping rope is placed in pump barrel assembly, and the lock ring 26 of unidirectional valve assembly 41
With the snap ring locking of setting body 5 of pump barrel assembly, sealed with sealing ring 27, a kind of laddering multistage simultaneous pumping system pump of composition.
Described assembly for plunger, can be set with by increasing unidirectional valve assembly 41 sucker rod 23 concatenate single-stage plunger A40 and
Single-stage plunger A ' 40 ' number increases the series of assembly for plunger；Described pump barrel assembly, can connect list by increasing setting body 5
Level pump barrel A11 and single-stage pump barrel B12 number increases the series of pump barrel assembly, the series of pump barrel assembly and the series of assembly for plunger
Corresponding, assembly for plunger is as in pump barrel assembly, a kind of laddering multistage simultaneous pumping system pump of composition.
Referring to Fig. 2, Fig. 3, described sucker rod 23 can be flexible oil pumping rope, the two ends of flexible oil pumping rope and two connectors
A22, connector A ' 22 ' connection；Connector A22 connecting shaft is threadedly coupled with fixing nut 21, connector A ' 22 ' connecting shaft
It is threadedly coupled with single-stage plunger A ' 40 ' connecting shaft A ' 13 '.
Referring to Fig. 2, Fig. 3, a kind of assembly for plunger of laddering multistage simultaneous pumping system pump, when descending for the first time, in single-stage pump
The sliding spool A ' 38 ' of single-stage plunger A ' 40 ' in cylinder B12 feed liquor groove is opened, and down-hole liquid enters slide post by groove
Fill in A ' 38 ' cavity and cavity upper space；Assembly for plunger stops behind position needed for going downwards to, then start it is up, it is up
When, single-stage plunger A ' 40 ' sliding spool A ' 38 ' will turn off in the presence of relief valve A ' 39 ', and bailing liquid is up,
When liquid weight exceeds setting weight, relief valve A ' 39 ' is unloaded automatically, enters upper by unidirectional valve assembly 41 by the well liquid of bailing
In the single-stage pump barrel A11 of one-level.At the same time, because in upper level single-stage pump barrel A11 without well liquid, the non-bailing liquid of single-stage plunger A40
Body.
When the laddering multistage simultaneous pumping system pump of one kind is descending for the second time, the valve ball 30 of unidirectional valve assembly 41 is set in valve seat
On 28, the well liquid in upper level single-stage pump barrel A11 is blocked, prevents well liquid from flowing back.Contacted after assembly for plunger downstream settings distance
During to liquid level, single-stage plunger A40 sliding spool A38, single-stage plunger A ' 40 ' sliding spool A ' 38 ' feed liquor groove are simultaneously
Automatically open up feed liquor；Under the traction of well head oil pumping rope, assembly for plunger uplink synchronization, sliding spool A38, sliding spool A ' 38 '
Simultaneously automatic to close, the well liquid in single-stage pump barrel A11 is promoted to well head and squeezes into industrial pipeline by the sliding spool A38 of upper level,
At the same time, the sliding spool A ' 38 ' of next stage lifts well liquid, and the single-stage pump barrel of upper level is entered from unidirectional valve assembly 41
In A11, the well liquid in single-stage pump barrel A11 is supplemented.
During a kind of laddering multistage simultaneous pumping system pump bailing liquid is up, as each single-stage plunger A40, single-stage plunger A ' 40 '
When the liquid weight of upper load exceeds setting value, relief valve 39, relief valve 39 ' are unloaded automatically, prevent sucker rod 23, well head oil pumping
Rope is broken caused by load excessive.
The advantage of the device is that the full well stroke of assembly for plunger can be divided into the short stroke of multiple single-stage plungers.For example,
In the prior art, for the oil well that well depth is 1200 meters, the plunger of oil well pump needs to lift well liquid to well head from shaft bottom, and stroke is
1200 meters of well depth length.Stroke can be divided into 4 sections by a kind of laddering multistage simultaneous pumping system pump, and every section of stroke depth is then
1200/4=300 meters.Now, a kind of structure of laddering multistage simultaneous pumping system pump is that unidirectional valve assembly 41 has been set with by 3
Sucker rod 23 concatenates 4 single-stage plunger A40 composition assembly for plunger；It is total that 3 setting bodies 5 concatenate 4 single-stage pump barrel A11 composition pump barrels
Into；A kind of laddering multistage simultaneous pumping system pump is now laddering 4 grades of simultaneous pumping system pumps, and 1200 meters of stroke is become into 4
Single-stage plunger A40 sync stroke, well head flexible oil pumping rope, which need to only lift 300 meters, can complete the work of 1200 meters of strokes
Make.
Specifically, from bottom to up, by each single-stage plunger A40 of assembly for plunger be labeled as most next stage, penultimate stage,
Level third from the bottom and most upper level single-stage plunger A40, then, a kind of laddering multistage simultaneous pumping system pump leading in well head oil pumping rope
Draw lower first time it is descending when, only most in next stage pump barrel most next stage single-stage plunger A40 work, well liquid is uploaded into inverse
In the single-stage pump barrel A11 of the second level；Because, without well liquid, the single-stage plunger A40 in it does not work in other pump barrels at different levels；It is a kind of laddering
When multistage simultaneous pumping system pump is descending for the second time under the traction of well head oil pumping rope, unidirectional valve assembly 41 will upload to penultimate stage
Well liquid closure in single-stage pump barrel A11, prevents well liquid from flowing back；Most next stage and the single-stage plunger A40 of penultimate stage are by underground
Transmitted with the well liquid in penultimate stage single-stage pump barrel A11 into penultimate stage, the single-stage pump barrel A11 of level third from the bottom；Together
Reason, when third time is descending, down-hole liquid is sent to most upper level, level third from the bottom, the single-stage pump barrel A11 of penultimate stage
It is interior；4th time it is descending when, most upper level single-stage plunger A40 by the well liquid pumping in most upper level single-stage pump barrel A11 to well head, squeeze
Enter industrial pipeline, at the same time, the well liquid in the single-stage pump barrel A11 of penultimate stage, level third from the bottom and most upper level is also obtained
Supplement is arrived；Such upload, laddering pumping well liquid repeatedly.
Exceed maximum carrying, the relief valve 39 installed on single-stage plunger A40 to prevent oil pumping rope and sucker rod 23 from loading
Limit the single-stage plunger A40 upper extract scale of constructions every time, it is ensured that overburden does not work for oil pumping rope and sucker rod 23, prevents flexible oil pumping rope
It is broken with sucker rod 23.
The advantage of the device is the range ability for shortening assembly for plunger, it is possible to reduce wastage, improves pump efficiency, extended column
Plug and sucker rod, the service life of oil pumping rope.Save time and power reduces energy consumption.
Claims (4)
1. a kind of laddering multistage synchronous oil recovery method, it is characterised in that：
(1) full well pump cylinder is divided into equidistant several sections of pump barrels, single-stage plunger built in every section of pump barrel, each single-stage plunger with setting body
Concatenated, hung with well head oil pumping rope with the sucker rod for being set with unidirectional valve assembly, relief valve is housed on single-stage plunger, limit single-stage post
Each swabbing well liquid measure is filled in, prevents sucker rod and well head oil pumping rope from overloading；Unidirectional valve assembly and setting body are with lock rings, with close
Seal ring is sealed；
(2) when first time well head oil pumping rope synchronously transfers each single-stage plunger pumping well liquid, the single-stage in the most next stage pump barrel of shaft bottom
Well liquid pumping is uploaded in penultimate stage pump barrel thereon by plunger, the well liquid that unidirectional valve assembly closure is uploaded, and prevents well liquid
Backflow；Other pump barrel internal causes at different levels are without well liquid, and the single-stage plunger in it does not work；
When (3) second of well head oil pumping rope synchronously transfer each single-stage plunger pumping well liquid, penultimate stage pump barrel and shaft bottom are most lower
Single-stage plunger in one-level pump barrel synchronous pumping well liquid and corresponds to be uploaded to level pump barrel third from the bottom and second from the bottom respectively respectively
In level pump barrel, the unidirectional valve assembly between each single-stage plunger blocks the well liquid of upload, prevents well liquid from flowing back；In this swabbing well liquid
During, the well liquid in penultimate stage pump barrel is uploaded in level pump barrel third from the bottom, at the same time, penultimate stage pump barrel
Interior well liquid also obtains the supplement of the well liquid of most next stage pump barrel upload, realizes laddering upload well liquid；
(4) similarly, well head oil pumping rope drives being synchronized with the movement for the single-stage plunger in pump barrels at different levels, so constantly by down-hole liquid
Laddering step by step to upload, finally the single-stage plunger in most upper level pump barrel squeezes into industrial pipeline by well liquid pumping to well head；Respectively
Relief valve on level single-stage plunger limits the well liquid amount of each single-stage plunger pumping, when the load beyond setting, and relief valve is certainly
Dynamic unloading, prevents the oil pumping rope of sucker rod and well head from overloading.
2. a kind of laddering multistage simultaneous pumping system pump, is made up of assembly for plunger and pump barrel assembly；Pump barrel assembly is by single-stage pump barrel A
(11), single-stage pump barrel B (12), setting body (5), box cupling A (1), box cupling D (9) and downhole hardware (10) composition；Two neighboring pump barrel
A (2), pump barrel B (4), to be threadedly coupled, constitute single-stage pump barrel A (11), two neighboring pump barrel C (6), pump with box cupling B (3) two ends
Cylinder D (8), to be threadedly coupled, constitutes single-stage pump barrel B (12) with box cupling C (7) two ends；It is adjacent two single-stage pump barrel A (11), single
Level pump barrel B (12) with the two ends of setting body (5) to be threadedly coupled, box cupling D (9) two ends and pump barrel D (8) lower end and underground dress
The upper end connection of (10) is put, box cupling A (1) lower end, to be threadedly coupled, constitutes pump barrel assembly with pump barrel A (2) upper end；Its feature
It is：
Assembly for plunger is main by single-stage plunger A (40), single-stage plunger A ' (40 '), unidirectional valve assembly (41), weight linear meter (35) group
Into；Center-pole is provided with feed liquor groove on (36)；Go out on liquid set (15) and be provided with liquid outlet groove；" O " type ring (17) built in sealing block (16)；
The upper/lower terminal of sealing block (16) is inserted out in the shelves platform of liquid set (15) and slip cap (18), goes out liquid set (15) and slip cap
(18) to be threadedly coupled, sealing block (16) is limited in the sliding spool A (38) for constituting one therebetween；Center-pole (36)
Lower end threaded connection fixing nut A (21)；Spring (20), pressure release set (19), sliding spool A (38) are set with successively from the bottom up
On center-pole (36)；Pressure release set (19) and spring (20) composition relief valve (39)；The upper end of center-pole (36) is to be threadedly coupled
Fixed nylon sheath wire (14) and connecting shaft A (13), composition single-stage plunger A (40)；
Unidirectional valve assembly (41) is main by valve bonnet (24), valve ball (30), valve seat (28), nut (29), seal (31), resilient sleeve
(32), sealing block A (33) and nut B (34) compositions；Valve ball (30) bulb separation head and ball handle two parts；Ball handle, the valve of valve ball (30)
Upper capping, seal (31), sealing block A (33), the nut B (34) of cover (24) are provided with isometrical axially extending bore vertically；Valve ball
(30) bulb is provided with the axial notch more than ball handle axially extending bore；The bulb axial notch built-in wear-resisting set of valve ball (30)
(25), the bulb of valve ball (30) is placed in valve bonnet (24), and valve seat (28), nut (29) are placed in valve bonnet, positioned at valve ball (30)
Below bulb, nut (29) is connected with valve bonnet (24) external screw thread, by valve seat (28) spacing fixation；Covered on the outer tube wall of valve bonnet (24)
Fill lock ring (26) and sealing ring (27)；Seal (31) is divided to upper and lower two cavity, and its upper cavity and ball valve (30) ball handle with spiral shell
Line is connected；Sealing block A (33) built in the lower chamber of seal (31) and spring housing (32), sealing block A (33) and spring housing (32)
Sealing sheath is constituted, nut B (34) within the lower chamber of seal (31) with being threadedly coupled, by spring housing (32), sealing block A
(33) it is spacing in the lower chamber of seal (31), constitute unidirectional valve assembly (41)；Unidirectional valve assembly (41) is sleeved on sucker rod
(23) on；
Single-stage plunger A ' (40 ') is identical with single-stage plunger A (40) structure, is set with the sucker rod (23) and knot of unidirectional valve assembly (41)
Two single-stage plunger A (40) of structure identical and single-stage plunger A ' (40 ') concatenations；Both, the upper end of sucker rod (23) and single-stage plunger A
(40) fixing nut A (21) is with threaded connection；The lower end of sucker rod (23) and single-stage plunger A ' (40 ') connecting shaft A '
(13 ') are with threaded connection；Single-stage plunger A ' (40 ') fixing nut A ' (21 ') constitutes plunger to be threadedly coupled weight linear meter (35)
Assembly；
Assembly for plunger is placed in pump barrel assembly, and the lock ring (26) of unidirectional valve assembly (41) blocks with the setting body (5) of pump barrel assembly
Ring is locked, and is sealed with sealing ring (27).
3. a kind of laddering multistage simultaneous pumping system pump as claimed in claim 2, it is characterised in that：Described assembly for plunger, leads to
Cross sucker rod (23) the concatenation single-stage plunger A (40) and single-stage plunger A ' (40 ') of the unidirectional valve assembly (41) of increase suit number
Increase the series of assembly for plunger；Described pump barrel assembly, single-stage pump barrel A (11) and single-stage pump are concatenated by increasing setting body (5)
Cylinder B (12) radical increases the series of pump barrel assembly, and the series of pump barrel assembly is corresponding with the series of assembly for plunger.
4. a kind of laddering multistage simultaneous pumping system pump as described in claim 2 and claim 3, it is characterised in that：Described
Sucker rod (23) is flexible oil pumping rope, and the two ends of flexible oil pumping rope are connected with two connector A (22), connector A ' (22 ')；Even
The connecting shaft connect on device A (22) is threadedly coupled with fixing nut A (21), the connecting shaft on connector A ' (22 ') and single-stage plunger
Connecting shaft A ' (13 ') threaded connections on A ' (40 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710062566.0A CN107218013A (en) | 2017-01-22 | 2017-01-22 | A kind of laddering synchronous oil recovery method and a kind of laddering multistage simultaneous pumping system pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710062566.0A CN107218013A (en) | 2017-01-22 | 2017-01-22 | A kind of laddering synchronous oil recovery method and a kind of laddering multistage simultaneous pumping system pump |
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| Publication Number | Publication Date |
|---|---|
| CN107218013A true CN107218013A (en) | 2017-09-29 |
Family
ID=59928291
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|---|---|---|---|
| CN201710062566.0A Pending CN107218013A (en) | 2017-01-22 | 2017-01-22 | A kind of laddering synchronous oil recovery method and a kind of laddering multistage simultaneous pumping system pump |
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| CN (1) | CN107218013A (en) |
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| GB1079939A (en) * | 1964-12-07 | 1967-08-16 | Shell Int Research | Well pump |
| US20020031438A1 (en) * | 2000-02-01 | 2002-03-14 | Milton Skillman | Downstroke sucker rod well pump |
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| CN2926580Y (en) * | 2006-07-25 | 2007-07-25 | 冯金财 | Multi-stage sandproof oil pump |
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