CN109578256A - Sand-proof oil-well pump - Google Patents
Sand-proof oil-well pump Download PDFInfo
- Publication number
- CN109578256A CN109578256A CN201811545016.5A CN201811545016A CN109578256A CN 109578256 A CN109578256 A CN 109578256A CN 201811545016 A CN201811545016 A CN 201811545016A CN 109578256 A CN109578256 A CN 109578256A
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- China
- Prior art keywords
- sand
- pump barrel
- short
- plunger
- pump
- 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
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 97
- 230000000694 effects Effects 0.000 claims description 10
- 238000000151 deposition Methods 0.000 claims description 4
- 239000010779 crude oil Substances 0.000 abstract description 7
- 238000011010 flushing procedure Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 37
- 239000012530 fluid Substances 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
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
-
- 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
- F04B47/005—Sand trap arrangements
-
- 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
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
-
- 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
-
- 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
A kind of sand-proof oil-well pump, it is made of assembly for plunger and pump barrel assembly, pull rod is connect with short-plunger, long pump barrel in short-plunger and pump barrel assembly is slidingly sealed cooperation, short column outer surface is equipped with and deposits sand annular groove, and the sand-precipitating tube in the pump barrel assembly covers in short pump barrel outer wall and forms sand setting ring, and elastic spacing pawl is equipped with inside sand-precipitating tube, the pump has the characteristics of pump efficiency is high, sand controlling result is good, bearing capacity is strong, realizes the forward and reverse well-flushing of fixed tubular column, sand washing, is suitable for sanding heavy crude oil well exploitation.
Description
Technical field
The present invention relates to the specific feedback suction pumps for oil field sanding heavy crude oil well pumping crude oil, it breaches common feedback
The structural limitation of suction pump, can efficient heavy crude producing and good sand controlling result.
Background technique
Currently, heavy oil wells oil reservoir sand content is big there are many oil field at home, the sand controls such as sand control strainer are hung under using in exploitation
After tool, still there is a small amount of sand grains to enter in pump, when using common feedback suction pump, often occur sand grains enter pump in cause sand
Card, sand bury phenomenon.Therefore must be using the suction pump with sand-proof function, but existing sand control suction pump still has much not
Foot, conventional sand control suction pump are usually to change on the basis of common feedback suction pump to design of part details on assembly for plunger
Into, such as use isometrical plunger or add and scrape sand ring, sand controlling result is limited, especially cannot prevent sand from burying when stopping and taking out.
Summary of the invention
The main purpose of the present invention is to provide a kind of sand-proof oil-well pump, solution often occur in heavy crude producing sand grains into
Entering in pump causes sand card, sand to bury phenomenon.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of sand-proof oil-well pump, it is characterized in that:
It is made of assembly for plunger and pump barrel assembly, pull rod is connect with short-plunger, and short-plunger is slidingly sealed with the long pump barrel in pump barrel assembly
Cooperation, short column outer surface are equipped with and deposit sand annular groove；
Sand-precipitating tube in the pump barrel assembly covers in short pump barrel outer wall and forms sand setting ring, and elasticity limit is equipped with inside sand-precipitating tube
Position pawl；
Pull rod is equipped with sand stop ring, and sand stop ring is located between short pump barrel and elastic spacing pawl, and sand stop ring is slidably connected with pull rod, gear
Two sides are the conical surface to sand ring up and down, wherein the outer circle of one side is provided with flow-conveying groove, flow-conveying groove is located at the one side contacted with short pump barrel.
In preferred embodiment, sand stop ring is unidirectionally limited in inside sand-precipitating tube by the elastic spacing pawl.
In preferred embodiment, the flow-conveying groove is rectangular channel, dovetail groove or semi-circular groove.
In preferred embodiment, the quantity of flow-conveying groove is one or more.
In preferred embodiment, is formed and be equipped with support ring inside sand setting ring.
In preferred embodiment, oil inlet outer tube is equipped with centering ring, and the activity pump barrel passes through centering ring.
In preferred embodiment, the sand ring shape flute profile of depositing of the short-plunger outer round surface is one or more.
The present invention has following advantages:
(1) limitation of common feedback suction pump structure is breached, the design of sand control structure is carried out to the upper and lower part of pump, without influencing
The formation for pumping hydraulic feedback power at work, simpler compared to existing sand control suction pump structure efficient, better reliability is more suitable
Exploitation for sanding heavy crude oil well.
(2) sand stop ring is designed using special construction, can play the role of that sand grains is stopped to fall into pump barrel and provide liquid
Circulation road enables to generate downward hydraulic feedback power when pumping downlink, overcomes viscous crude resistance, it is stagnant to reduce roofbolt downlink in heavy oil wells
Problem afterwards.
(3) inlet valve using annular plate valve design, due to annular oil inlet valve ball design on movable pump barrel, valve ball diameter not by
Diameter of plunger limitation, ball valve diameter can increase, so that runner be made to increase, reduce viscous crude flow resistance, increase coefficient of fullness, improve
Pump efficiency, meanwhile, inlet valve is opened and closed by frictional force effect between plunger and movable pump barrel, and opening and closing flexibly, reduces viscous crude
Well fuel inlet ball check valve opens and closes lag issues.
(4) annular oil inlet valve ball design is on movable pump barrel, and when assembly for plunger is suggested pump barrel, movable pump barrel inner hole can
As fluid course, to realize the forward and reverse well-flushing of fixed tubular column, sand washing, when operation can automatic draining, be not necessarily to bleeder.
(5) pump has sand setting annular space and sand stop ring on, can prevent sand card and sand from burying, and lower pump is long-plunger short pump barrel structure, this
Body has sand control effect, therefore the pump upper and lower part energy sand control, adapts to the exploitation of sand output well.
(6) sand annular groove is deposited in design on short-plunger, into pump barrel and plunger fitting clearance in a small amount of fine sand can be by
It washes away and is expressed in annular groove, avoid pump barrel and plunger matching surface sand grains from being detained, pull plunger and pump barrel, cause sand card.
(7) the small pump in lower part is movable pump barrel, is not subject to load, and tail pipe load is all added on the box cupling outside movable pump barrel,
Therefore the pump has stronger bearing capacity.
The present invention provides a kind of sand-proof oil-well pump, pump top half mainly by short pump barrel, long pump barrel, short-plunger, position-limited claw,
The composition such as sand stop ring, sand sediment pipe, upper delivery valve, lower delivery valve is the sand control structure with sand setting annular space and sand stop ring；Pump lower half
Divide and be mainly made of long-plunger, movable pump barrel, annular oil inlet valve ball, oil inlet valve seat etc., is the sand control of long-plunger activity short pump barrel
Structure.
During plunger upward and downward, the long pump barrel short column plug structure for pumping top half plays sand control by sand stop ring and makees
With pump lower half portion uses the long-plunger short pump barrel structure for itself having sand control effect；Meanwhile the pump sand stop ring uses special knot
Structure design had both had sand-blocking function and had acted on but also with overcurrent, when pumping downlink, made pump that can generate downward hydraulic feedback power, gram
Take viscous crude resistance；Inlet valve designs on movable pump barrel, and runner is big, and oil flow resistance is small.The pump has pump efficiency height, sand controlling result
Well, bearing capacity is strong, realizes the forward and reverse well-flushing of fixed tubular column, sand washing, is suitable for the characteristics of sanding heavy crude oil well is exploited.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is structure chart of the invention；
Fig. 2 is short-plunger structural schematic diagram of the invention；
Fig. 3 is sand stop ring structural schematic diagram of the invention；
In figure: connector 1；Sand stop ring 2；Pull rod 3；Upper delivery valve 4；Short-plunger 5；Lower delivery valve 6；Long-plunger 7；Annular oil inlet valve ball
8；Movable pump barrel 9；Upper box cupling 10；Elastic spacing pawl 11；Sand-precipitating tube 12；Support ring 13；Short pump barrel 14；Pump barrel box cupling 15；Long pump
Cylinder 16；Variable buckle box cupling 17；Oil inlet valve seat 18；Centering ring 19；Lower box cupling 20；Deposit sand annular groove 21；Flow-conveying groove 22；Reverse side 23；Just
Face 24；Oil inlet outer tube 25.
Specific embodiment
Embodiment 1
As shown in Fig. 1 ~ 3, a kind of sand-proof oil-well pump is made of assembly for plunger and pump barrel assembly, and pump barrel assembly is by sand-precipitating tube 12, short
Pump barrel 14, long pump barrel 16 and oil inlet outer tube 25 form, and elastic spacing pawl 11 are equipped with inside sand-precipitating tube 12,12 sets of sand-precipitating tube in short pump
14 outer walls of cylinder simultaneously form sand setting ring, and short pump barrel 14 is connected to the long pump barrel 16 in one end of lower section, outside long 16 other end of pump barrel and oil inlet
Pipe 25 is connected to, and the assembly for plunger is located inside pump barrel, and short-plunger 5 is equipped in the middle part of assembly for plunger, and short-plunger 5 is located at long pump barrel 16
Inside, 5 outer surface of short-plunger, which is equipped with, deposits sand annular groove 21, and 5 both ends of short-plunger are equipped with upper delivery valve 4 and lower delivery valve 6, upper fuel-displaced
4 top of valve is connect with pull rod 3, and pull rod 3 is equipped with sand stop ring 2, and sand stop ring 2 is located between short pump barrel 14 and sand-precipitating tube 12, is gone out down
6 lower section of oil valve is connect with long-plunger 7, and long-plunger 7 is located inside oil inlet outer tube 25, and movable pump barrel 9 is equipped in oil inlet outer tube 25, living
Dynamic 9 sets of pump barrel is on long-plunger 7, and movable 9 upper end of pump barrel is equipped with annular oil inlet valve ball 8, this structure, designs and deposits on short-plunger 5
Sand annular groove can be washed into a small amount of fine sand in pump barrel and plunger fitting clearance and be expressed in annular groove, prevent sand grains
It is trapped in 5 contact surface of pump barrel and short-plunger, causes sand card referring to structural representation Fig. 2；Sand stop ring 2 can be opposite on pull rod 3
Sliding, sand setting ring is formed between short pump barrel 14 and sand-precipitating tube 12 prevents the sand grains in oil pipe from falling under the action of sand stop ring 2
Enter in pump barrel and slide and be deposited in sand setting annular space, when stopping taking out, sand stop ring 2 is pressed in 14 upper surface of short pump barrel always, deposition
Sand grains cannot be introduced into pump barrel, so as to prevent sand from burying；Lower part inlet valve is annular valve arrangement, and annular oil inlet valve ball 8 is fixed on
It on movable pump barrel 9, and is landed on oil inlet valve seat 18, movable pump barrel 9 is done under frictional force and the oil liquid pressure effect of long-plunger 7
Short distance pumps, and opens and closes inlet valve.
Elastic spacing pawl 11 is equipped with inside sand-precipitating tube 12, the sand stop ring 2 is limited in the pawl of elastic spacing pawl 11 always
In region between head lower end and 14 upper surface of short pump barrel, thus structure, sand stop ring 2 can be on pull rods 3 with respect to sliding, in column
During plug assembly is gone into the well, sand stop ring 2 can enter elastic spacing by the elastic claw head of elastic spacing pawl 11 under rod head
11 lower part of pawl, pull rod 3 move up and down when, sand stop ring 2 be limited in always position-limited claw 11 elastic claw head lower end surface and short pump
In region between 14 upper surfaces of cylinder.
In preferred embodiment, 2 two sides of sand stop ring be for the conical surface, wherein the outer circle of one side is provided with flow-conveying groove 22, thus structure,
Sand stop ring 2 is designed as the different obverse and reverse sides of structure on two sides referring to structural representation Fig. 3, and reverse side 23 is designed as being provided with several overcurrents
The conical surface of slot 22 cooperates with 14 upper surface of short pump barrel downwards, and when sand stop ring falls in 14 upper surface of short pump barrel, pump barrel inner fluid is still
It can be connected to oil pipe inner fluid, enable to generate downward feedback force when plunger downlink, front 24 is designed as the conical surface of slotless, normally
In operation process, it can be slid into sand setting ring along the conical surface when sand grains falls in sand stop ring front in oil pipe, stop taking out when not playing roofbolt
When, sand stop ring can tightly be sat down in 14 upper surface of short pump barrel, prevent sand grains from entering pump barrel, and sand card, sand is caused to bury.
In preferred embodiment, the flow-conveying groove 22 is rectangular channel, dovetail groove or semi-circular groove, thus structure, can be according to using
Condition difference uses a variety of preferred embodiments.
In preferred embodiment, the quantity of flow-conveying groove 22 is one or more, and thus structure, can use according to territory of use's difference
A variety of preferred embodiments.
In preferred embodiment, sand stop ring 2 is provided with the one of flow-conveying groove 22 and cooperates downwards with 1414 upper surface of short pump barrel, thus ties
Structure, pump barrel inner fluid remain to be connected to oil pipe inner fluid, enable to generate downward feedback force when plunger downlink.
In preferred embodiment, annular oil inlet valve ball 8 is fixed on movable pump barrel 9, and is landed on oil inlet valve seat 18, inlet valve
Seat 18 is located inside oil inlet outer tube 25, thus structure, and lower part inlet valve is annular valve arrangement, and annular oil inlet valve ball 8 is fixed on work
It on dynamic pump barrel 9, and is landed on oil inlet valve seat 18, movable pump barrel 9 does short under frictional force and the oil liquid pressure effect of long-plunger 7
Distance pumps, and opens and closes inlet valve；Since inlet valve is on pump barrel, valve ball diameter is not by diameter of plunger
Limitation, ball valve diameter can increase, so that runner be made to increase, reduce viscous crude flow resistance.
In preferred embodiment, centering ring 21 is equipped with inside oil inlet outer tube 25, the activity pump barrel 9 passes through centering ring 21, thus
Structure, centering ring 21 can be oriented to the movement position of movable pump barrel 9.
In preferred embodiment, 21 shape of sand annular groove of depositing of 5 outer round surface of short-plunger is one or more, thus structure, can
A variety of preferred embodiments are used according to use condition difference.
Embodiment 2
It 1 further illustrates in conjunction with the embodiments, as shown in Fig. 1 ~ 3, in lower well operations, first by pump barrel assembly upper end connected pipes,
Lower end union tail couples with design position in tubing string tripping in oil well, then by the upper end of assembly for plunger with sucker rod, with
Rod string is together in tripping in oil pipe.
In swabbing operation, assembly for plunger pumps in pump barrel assembly under the drive of sucker rod.
When up stroke, assembly for plunger uplink, upper and lower delivery valve is closed, and upper pump annular pump cavity volume increases, pressure decline,
Inlet valve is opened under the frictional force effect between pump intake pressure and plunger and pump barrel, and crude oil enters annular pump chamber.
When down stroke, assembly for plunger downlink, annular pump cavity volume reduces, and pressure increases, and inlet valve is in self gravity, long column
It is closed under frictional force and oil liquid differential pressure action between plug and short pump barrel.Meanwhile being acted on by annular pump chamber oil pressure, upper and lower delivery valve is beaten
It opens, oil pipe chamber is connected to pump chamber, generates the hydraulic feedback power for helping assembly for plunger downlink, and annular pump chamber Crude Oil is extruded, and is passed through
Upper and lower delivery valve 4/6 enters in 5 top oil pipe of short-plunger.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as limitation of the invention, this hair
Bright protection scope should be with the technical solution of claim record, technical characteristic in the technical solution recorded including claim
Equivalents are protection scope.Equivalent replacement i.e. within this range is improved, also within protection scope of the present invention.
Claims (7)
1. a kind of sand-proof oil-well pump, it is characterized in that: being made of assembly for plunger and pump barrel assembly, pull rod (3) and short-plunger (5) are even
It connects, the long pump barrel (16) in short-plunger (5) and pump barrel assembly is slidingly sealed cooperation, and short-plunger (5) outer surface is equipped with and deposits sand ring shape
Slot (21)；
Sand-precipitating tube (12) in the pump barrel assembly covers in short pump barrel (14) outer wall and forms sand setting ring, sets inside sand-precipitating tube (12)
Have and is equipped with elastic spacing pawl (11)；
Pull rod (3) is equipped with sand stop ring (2), and sand stop ring (2) is located between short pump barrel (14) and elastic spacing pawl (11), sand stop ring
(2) it being slidably connected with pull rod (3), two sides are the conical surface to sand stop ring (2) up and down, wherein the outer circle of one side is provided with flow-conveying groove (22),
Flow-conveying groove (22) is located at the one side contacted with short pump barrel (14).
2. a kind of viscous crude formula sand-proof oil-well pump according to claim 1, it is characterized in that: the elastic spacing pawl (11) is by sand block
It is internal that ring (2) is unidirectionally limited in sand-precipitating tube (12).
3. a kind of viscous crude formula sand-proof oil-well pump according to claim 1, it is characterized in that: the flow-conveying groove (22) be rectangular channel,
Dovetail groove or semi-circular groove.
4. a kind of viscous crude formula sand-proof oil-well pump according to claim 1, it is characterized in that: the quantity of flow-conveying groove (22) be 1 or
It is multiple.
5. a kind of viscous crude formula sand-proof oil-well pump according to claim 1 is equipped with support ring it is characterized in that: being formed inside sand setting ring
(13).
6. a kind of viscous crude formula sand-proof oil-well pump according to claim 1, it is characterized in that: being equipped with righting inside oil inlet outer tube (25)
Ring (19), the activity pump barrel (9) pass through centering ring (19).
7. a kind of viscous crude formula sand-proof oil-well pump according to claim 1, it is characterized in that: the short-plunger (5) outer round surface
Depositing sand annular groove (21) shape is one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811545016.5A CN109578256B (en) | 2018-12-17 | Sand-proof oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811545016.5A CN109578256B (en) | 2018-12-17 | Sand-proof oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578256A true CN109578256A (en) | 2019-04-05 |
| CN109578256B CN109578256B (en) | 2024-06-28 |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958490A (en) * | 2021-09-08 | 2022-01-21 | 濮阳市元亨利通石油机械有限公司 | Sand-settling once tubular column oil-well pump |
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| CN204419560U (en) * | 2014-12-15 | 2015-06-24 | 中国石油化工股份有限公司 | Long-plunger note adopts integral type antiscale pump |
| CN104612944A (en) * | 2014-12-25 | 2015-05-13 | 长葛市福侨机电有限公司 | Viscous oil pump |
| RU2644797C1 (en) * | 2017-05-15 | 2018-02-14 | Георгий Владимирович Сансиев | Oil well pump |
| CN206874465U (en) * | 2017-06-15 | 2018-01-12 | 中国石油大学(华东) | A kind of new type of sand prevention pump |
| CN208089517U (en) * | 2018-04-11 | 2018-11-13 | 四川澳维采油设备有限公司 | A kind of plug-in type thick oil pump |
| CN209430383U (en) * | 2018-12-17 | 2019-09-24 | 中船重工中南装备有限责任公司 | Sand-proof oil-well pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958490A (en) * | 2021-09-08 | 2022-01-21 | 濮阳市元亨利通石油机械有限公司 | Sand-settling once tubular column oil-well pump |
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