CN110485970A - A kind of exhaust sand control installation for oil well pump - Google Patents
A kind of exhaust sand control installation for oil well pump Download PDFInfo
- Publication number
- CN110485970A CN110485970A CN201910882991.3A CN201910882991A CN110485970A CN 110485970 A CN110485970 A CN 110485970A CN 201910882991 A CN201910882991 A CN 201910882991A CN 110485970 A CN110485970 A CN 110485970A
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- Prior art keywords
- sand
- exhaust
- fixed valve
- pump
- oil
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- 239000004576 sand Substances 0.000 title claims abstract description 147
- 239000003129 oil well Substances 0.000 title claims abstract description 30
- 238000009434 installation Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 238000005119 centrifugation Methods 0.000 claims abstract description 35
- 101100041681 Takifugu rubripes sand gene Proteins 0.000 claims description 140
- 239000007789 gas Substances 0.000 claims description 44
- 238000000926 separation method Methods 0.000 claims description 26
- 208000035126 Facies Diseases 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 230000002776 aggregation Effects 0.000 claims description 5
- 238000004220 aggregation Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 25
- 239000012071 phase Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- 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
-
- 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
-
- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- 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
- 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
Landscapes
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of exhaust sand control installations for oil well pump, this exhaust sand control installation for oil well pump includes plunger, pump barrel, connector, fixed valve assembly, discharge air separator, sand control structural assembly, plunger is in pump barrel, travelling valve ball is in plunger valve ball seat, pump barrel lower end is connected and fixed valve assembly upper end liquid outlet, and setting sand control structural assembly in liquid inlet is carried out below fixed valve assembly；Fixed valve assembly includes fuel-displaced shell, fixed valve lower contact, fixed valve ball, oil-release valve cover, fixed valve lower contact is set to fuel-displaced shell lower port, oil-release valve cover is buckled in fixed valve lower contact, fixed valve lower contact is communicated with oil-release valve cover by delivery valve pilot hole, fixed valve ball is set at delivery valve pilot hole, fuel-displaced shell is separated into left side and right side, and discharge air separator is lifted on right side；Sand control structural assembly includes gravitational settling cylinder, centrifugation sand-settling device.The present invention can significantly reduce the generation of phenomena such as sand card and gas lock often occurred in pump.
Description
Technical field:
The present invention relates to oil extraction in oil field design library part editor and reuse fields, and in particular to be that a kind of exhaust sand control for oil well pump fills
It sets.
Background technique:
With going deep into for oilfield exploitation, China, oil field, part has come into High water cut, the " three high " stage containing sand, gassiness, causes
Enable traditional oil well pump in use the problem of expose, structure is simple, is only applicable to that pumping is free from foreign meter, a small amount of gas
Fluid liquid, the case where being unsuitable for gas-solid-liquid three-phase or even multiphase coexistence.In this regard, needing to study one kind makes pump work of pumping
When suitable for the high solid exhaust sand control installation than, high gas ratio.
By taking the critical facility plunger oil-well pump of current oilfield exploitation as an example, in the course of work, run between pump barrel and plunger
When often there is sliding friction, in oil pumping process, the solid phases such as sundries in sand facies and oil well being rich in crude oil, such as operation take out
It draws in pump barrel, the serious eccentric wear of plunger will be caused for a long time, on the one hand eccentric wear can destroy plunger surface and part once occurring
Wear phenomena occur, on the other hand will cause local hot gluing phenomenon, substantially reduce the service life of oil well pump.And gas
In the presence of phase, traditional plunger oil-well pump pump pressure can change, the gas volume meeting in sucking and discharge process, in pump
It changes.When upstroke, since pump pressure reduces, condensate gas and solution gas in liquid can be separated from liquid,
Original free gas expansion, can have an impact plunger pump suction process；When down stroke, pumping interior space and reduce, pressure increases,
Part condensate gas and solution gas may be redissolved in liquid, influence the opening and closing of travelling valve and fixed valve.It is long-term so
Working in reciprocating mode can occur gas lock phenomenon, pump efficiency is caused to reduce when serious.
Summary of the invention:
The object of the present invention is to provide a kind of exhaust sand control installation for oil well pump, this exhaust sand control for oil well pump is filled
The problems such as setting for solving generally existing sand card and gas lock in current oil well pump operational process is imitated so as to cause the oil pumping of oil well pump
The phenomenon that rate and service life reduce.
The technical solution adopted by the present invention to solve the technical problems is: this exhaust sand control installation packet for oil well pump
Plunger, pump barrel, connector, fixed valve assembly, discharge air separator, sand control structural assembly are included, plunger is in pump barrel, and travelling valve ball is in column
In plug valve ball seat, pump barrel lower end is connected and fixed valve assembly upper end liquid outlet, and setting sand control in liquid inlet is carried out below fixed valve assembly
Structural assembly；
Fixed valve assembly includes fuel-displaced shell, fixed valve lower contact, fixed valve ball, oil-release valve cover, and fixed valve lower contact is set to
Fuel-displaced shell lower port, oil-release valve cover are buckled in fixed valve lower contact, and fixed valve lower contact and oil-release valve cover pass through delivery valve
Pilot hole communicates, and fixed valve ball is set at delivery valve pilot hole, and fuel-displaced shell is separated into left side and right side, delivery valve
Cover closes left side and the bottom of right side, and oil-release valve cover is communicated with right side by delivery valve pilot hole, and right side has
Capping, discharge air separator are lifted on right side, and discharge air separator outlet is communicated with pit shaft, and left side and right side pass through oil outlet
It communicates；The cavity that discharge air separator and right side are formed is discharge chamber, and discharge air separator is by spiral separation blade, exhaust cone
The revolving body that section, exhaust tail pipeline section are constituted from bottom to up, exhaust cone section, exhaust tail pipeline section are circumferentially evenly arranged venthole；
Sand control structural assembly includes gravitational settling cylinder, centrifugation sand-settling device, and gravitational settling cylinder is the cylinder of lower end closed, with ring
Shape sand setting chamber and centrifugation sand setting chamber, annular sand setting chamber surround outside centrifugation sand setting chamber and communicate, and centrifugation sand-settling device is set to centrifugation
In sand setting chamber, the setting of gravitational settling cylinder top carrys out liquid inlet disk.
The opening cylinder that sand-settling device is integrally formed by direct tube section and extension diameter section is centrifuged in above scheme, extension diameter section is located at straight tube
Below section, extension diameter section top is evenly arranged with the tangential sand export of sand-settling device, the setting centrifuge separation of extension diameter section inner wall interleaved
Blade is uniformly arranged blade gas vent on each centrifuge separation blade.
The shape of discharge chamber and inverted discharge air separator shape are similar in above scheme, the eddy flow through spiral separation blade
Effect, the gas phase of lightweight phase can be gathered near exhaust tail pipeline section and exhaust cone section, and discharge chamber can further be conducive to gas phase and arrange
The aggregation of gas tailpipe section and exhaust cone section, to make gas through exhaust tail pipeline section venthole and exhaust cone section venthole discharge pump
Cylinder is conducive to the efficient operation of pump.
Annular sand setting chamber is made of II grades of chambers of I grades of chambers of sand setting and sand setting in above scheme, wherein coming liquid inlet disk and sand setting I
Region between grade entrance forms I grades of chambers of sand setting, and the region between II grades of entrances of I grades of entrances of sand setting and sand setting forms sand setting
II grades of chambers, I grades of chamber 13I of sand setting and sand setting II grades of chamber 13II have collectively constituted effective sand setting space of gravitational settling cylinder；Second level is heavy
Seepage flow hole is arranged in the upper end of sand cylinder, and the annular region between seepage flow hole and centrifugation sand-settling device forms centrifugation sand setting chamber, and centrifugation is heavy
Sand chamber is to be centrifuged effective sand setting space of sand-settling device.To have collectively constituted sand control structure total with centrifugation sand setting space in gravitational sand settling space
At.
Plunger does movement up and down reciprocatingly under the promotion of oil pumping motor in pump barrel in above scheme, when upstroke, Gu
Determine valve ball opening, gravity of the Produced Liquid through II grades of I grades of chambers of gravitational sand settling, sand setting chambers first based on sand facies itself plays preliminary sand control
Effect, the Produced Liquid containing relatively small amount sand facies play further sand controlling result through being centrifuged sand-settling device again, from centrifugation sand-settling device
Contain a large amount of condensate gas and solution gas in Produced Liquid out, the cyclonic separation effect through discharge air separator is discharged into pit shaft, liquid
Body enters in pump barrel；When down stroke, fixed valve ball is closed, and pump barrel squeezes liquids and gases and enters discharge chamber, is separated through exhaust
The effect of device cyclonic separation, the intracavitary a small amount of gas of discharge pump；It loops back and forth like this, plunger oil-well pump is made to play exhaust sand control
Purpose extends the service life of pump to improve pump efficiency.
The invention has the following advantages:
1. this invention ensures that oil well pump is during the work time, effective sand control while, also plays critical scavenging action,
The generation for phenomena such as sand card and gas lock often occurred in pump can be significantly reduced.
2. being encountered the invention proposes a kind of exhaust sand control installation for oil well pump with solving the current oilfield exploitation stage
Technical problem.
3. the exhaust structure assembly that the present invention is arranged below pump barrel, and come liquid inlet below fixed valve assembly
Sand control structural assembly based on gravity and centrifuge separation combining form, plays exhaust again while reaching effective sand controlling result
Effect, reducing pump, recurrent sand facies accumulate gas caused by caused sand card problem and gas phase aggregation during the work time
Lock problem.
Four, Detailed description of the invention:
Fig. 1 is a kind of exhaust sand control installation structural schematic diagram for oil well pump of the present invention.
Fig. 2 is the partial enlargement diagram that sand-settling device is centrifuged in a kind of exhaust sand control installation for oil well pump of the present invention.
Fig. 3 is the structural schematic diagram of discharge air separator in a kind of exhaust sand control installation for oil well pump of the present invention.
1. sucker rod, 2. plunger, 3. pump barrel, 4. travelling valve ball, 5. discharge air separator 5-1. exhaust tail pipeline section 5- in Fig. 1
2. exhaust cone section 5-3. spiral separation blade 5a. exhaust tail pipeline section venthole 5b. exhaust cone section venthole 5I. discharge chamber
6. the fuel-displaced shell 9a. oil outlet 10. of 7. fixed valve ball of oil-release valve cover 6a. delivery valve pilot hole, 8. fixed valve lower contact 9.
It is centrifuged the tangential sand export 12. of sand-settling device 10I. centrifugation 11. sand-settling device of sand setting chamber and is centrifugated blade 12a. centrifuge separation leaf
13. gravitational settling cylinder 13a. seepage flow hole 13b. of piece gas vent carrys out I grades of II grades of entrance 13d. sand settings of liquid inlet disk 13c. sand setting
I grades of entrance 13I. sand setting II grades of chamber 13II. sand setting 14. pit shaft of chamber.
Specific embodiment
Following further describes the present invention with reference to the drawings:
As shown in Figure 1, this exhaust sand control installation for oil well pump includes plunger 2, pump barrel 3, connector, fixed valve assembly, row
Gas separating device 5, sand control structural assembly are constituted, and travelling valve ball 4 is in plunger valve ball seat, and plunger 2 is inside pump barrel 3,3 lower end of pump barrel
Fuel-displaced shell left side pump chamber upper port is connected, setting sand control structural assembly in liquid inlet is carried out below fixed valve assembly.
Fixed valve assembly includes fuel-displaced shell 9, fixed valve lower contact 8, fixed valve ball 7, oil-release valve cover 6, is connect under fixed valve
First 8 are set to fuel-displaced 9 lower port of shell, and 6 lower end of oil-release valve cover is connect with fixed valve lower contact 8, and oil-release valve cover 6 is buckled in fixation
In valve lower contact 8, fuel-displaced shell 9 is connect with fixed valve lower contact 8 and oil-release valve cover 6 again.Fixed valve lower contact 8 and delivery valve
Cover 6 is communicated by delivery valve pilot hole 6a, and oil-release valve cover pilot hole 6a is introduced into exhaust disengagement chamber convenient for control Produced Liquid, Gu
Determine valve ball 7 and be set to oil-release valve cover 6, and be located at delivery valve pilot hole 6a, fuel-displaced shell 9 is separated into left side and right half
Portion, oil-release valve cover 6 close left side and the bottom of right side, and oil-release valve cover 6 passes through delivery valve pilot hole 6a phase with right side
It is logical.
3 lower end of pump barrel and fuel-displaced 9 left side of shell are installed, and fuel-displaced 9 right side of shell has capping, and discharge air separator 5 passes through
Be screwed and connect with fuel-displaced 9 right side of shell, around 5 upper end tailpipe section 5-1 of discharge air separator and the surface exhaust cone section 5-2 into
Row drilling processing, forms exhaust tail pipeline section venthole 5ba and exhaust cone section venthole 5b, and 5 lower end of discharge air separator is distributed spiral
Separate blade 5-3.The outlet of discharge air separator 5 is communicated with pit shaft 14, and left side is communicated with right side by oil outlet 9a；Exhaust point
Be discharge chamber 5I from the cavity that device 5 and right side are formed, discharge air separator 5 be by spiral separation blade 5-3, exhaust cone section 5-2,
The revolving body that exhaust tail pipeline section 5-1 is constituted from bottom to up, exhaust cone section 5-2, exhaust tail pipeline section 5-1 are circumferentially evenly arranged out
Stomata.Discharge air separator 5 is whole to use for reference Rafael nozzle structure type, is formed by connecting using variable diameter round tube, and discharge air separator 5 will
Fuel-displaced 9 right side of shell has been isolated into space identical with inverted 5 shape of discharge air separator, i.e. discharge chamber 5I；Through spiral point
Cyclonic action from blade 5-3, the gas phase of lightweight phase can be gathered near exhaust tail pipeline section 5-1 and exhaust cone section 5-2, and two sides are fallen
The discharge chamber 5I set can further be conducive to gas phase in the aggregation of tailpipe section and cone section, to make gas through exhaust tail pipeline section venthole
Pump barrel is discharged in 5a and exhaust cone section venthole 5b, is conducive to the efficient operation of pump.
Sand control structural assembly includes gravitational settling cylinder 13, centrifugation sand-settling device 10, and gravitational settling cylinder 13 is the cylinder of lower end closed
Body, with annular sand setting chamber and centrifugation sand setting chamber 10I, annular sand setting chamber surrounds outside centrifugation sand setting chamber 10I and communicates, and is centrifuged
Sand-settling device 10 is set in centrifugation sand setting chamber 10I, and the setting of 13 top of gravitational settling cylinder carrys out liquid inlet disk 13b.Carry out liquid inlet disk 13b
Region between I grades of entrance 13c of sand setting forms I grades of chamber 13I of sand setting, I grades of entrance 13c of sand setting and sand setting II grades of entrance 13d
Between region form II grades of chamber 13II of sand setting, I grades of chamber 13I of sand setting and sand setting II grades of chamber 13II and collectively constituted gravitational settling
Effective sand setting space of cylinder 13.Annular region between seepage flow hole 13a and centrifugation sand-settling device 10 forms centrifugation sand setting chamber 10I,
Centrifugation sand setting chamber 10I is the effective sand setting space for being centrifuged sand-settling device 10.Gravitational sand settling space is collectively constituted with centrifugation sand setting space
Sand control structural assembly.
Fixed valve lower contact 8 is connected with centrifugation sand-settling device 10, and the entire sand-settling device 10 that is centrifuged is placed in gravitational settling cylinder 13.Most
Eventually inside entire exhaust sand control formula plunger oil-well pump tripping in pump barrel 3.Centrifugation sand-settling device 10 is integrally formed by direct tube section and extension diameter section
Opening cylinder, extension diameter section is located at below direct tube section, and extension diameter section top is evenly arranged with the tangential sand export 11 of sand-settling device, expanding
Section inner wall interleaved setting is centrifugated blade 12, and centrifuge separation blade exhaust is uniformly arranged on each centrifuge separation blade 12
Hole 12a.
When the invention works, plunger 2 pumps under motor drive, when plunger 2 moves upwards, pump barrel 3
Interior space becomes larger, and pressure reduces, and travelling valve ball 4 is closed, and fixed valve ball 7 is opened under differential pressure action in submergence with pump chamber, adopted
Liquid origin liquid entrance enters I grades of chamber 13I of gravitational sand settling out, and a part of sand facies are deposited in I grades of chamber 13I of sand setting due to self gravity
Bottom, the Produced Liquid being gradually increasing enter in II grades of chamber 13II of sand setting through I grades of entrance 13c of sand setting, equally have part at this time
Sand facies are deposited in II grades of bottoms chamber 13II of sand setting due to self gravity, and the Produced Liquid containing a small amount of sand facies is through II grades of sand setting at this time
Entrance 13d enters centrifuge separation chamber, and II grades of entrance 13d of sand setting of two sides are equivalent to the entrance of two tangential directions, make to produce
Liquid is with certain tangential velocity to ionized motion, and when entering inside centrifugation sand-settling device 10, being centrifuged blade 12 can be into one
The acceleration of step rotates, and sand facies at this time can be close to migrate at side wall, thus from the tangential sand export 11 of sand-settling device due to centrifugal action
It throws away, sand facies enter in centrifugation sand setting chamber 10I, and the centrifugation upper end sand setting chamber 10I is provided with seepage flow hole 13a, prevent sand setting chamber sand
The deposition of phase and Produced Liquid is returned in sand setting II grades of chamber 13II so as to seepage flow, and is carried out to centrifuge separation blade 12
Drilling processing, makes it there are a certain number of centrifuge separation blade gas vent 12a in vivo, upward convenient for the gas inside Produced Liquid
Movement preferably flows into the gas-liquid separation chamber of next part, carries out the separation of gas-liquid.At this time by effective sand control without exhaust
Produced Liquid is entered in oil-release valve cover 6 by fixed valve ball 7, and Produced Liquid enters discharge chamber 5I through delivery valve pilot hole 6a, this
When gassiness Produced Liquid, acted on by the cyclonic separation of spiral separation blade 5-3, gas phase is gathered in the exhaust of discharge air separator 5
The gas on tailpipe section 5-1 and the surface exhaust cone section 5-2, aggregation is arranged through exhaust tail pipeline section venthole 5a and exhaust cone section venthole 5b
Out outside pump barrel, due to cyclonic separation principle, the liquid moved near side wall enters in pump chamber through oil outlet 9a, reduces extraction
Condensate gas and solution gas in liquid.When plunger 2 moves downward, space reduces in pump barrel 3, and travelling valve ball 4 is opened under stress,
Fixed valve ball 7 is closed, and pump barrel squeezes gassiness Produced Liquid and enters discharge chamber 5I, is acted on through 5 cyclonic separation of discharge air separator, then arrange
Gas a small amount of in pump chamber out.Repeatedly, oil pumping, exhaust, the sand control work of plunger pump are completed.
The present invention make can be not only vented in the oil well pump course of work but also can sand control, significantly reduce the sand card often occurred in pump
And the generation of the problems such as gas lock.
Claims (5)
1. a kind of exhaust sand control installation for oil well pump, it is characterised in that: this exhaust sand control installation packet for oil well pump
Plunger (2), pump barrel (3), connector, fixed valve assembly, discharge air separator (5), sand control structural assembly are included, plunger (2) is in pump barrel (3)
Interior, for travelling valve ball (4) in plunger valve ball seat, pump barrel (3) lower end is connected and fixed valve assembly upper end liquid outlet, fixes under valve assembly
Side carrys out liquid inlet setting sand control structural assembly；
Fixed valve assembly includes fuel-displaced shell (9), fixed valve lower contact (8), fixed valve ball (7), oil-release valve cover (6), fixed valve
Lower contact (8) is set to fuel-displaced shell (9) lower port, and oil-release valve cover (6) is buckled on fixed valve lower contact (8), under fixed valve
Connector (8) is communicated with oil-release valve cover (6) by delivery valve pilot hole (6a), and fixed valve ball (7) is set to delivery valve pilot hole
At (6a), fuel-displaced shell (9) is separated into left side and right side, and oil-release valve cover (6) seals left side and the bottom of right side
It closes, oil-release valve cover (6) is communicated with right side by delivery valve pilot hole (6a), and right side has capping, and discharge air separator (5) is hung
Mounted in right side, discharge air separator (5) outlet is communicated with pit shaft (14), and left side is communicated with right side by oil outlet (9a)；
The cavity that discharge air separator (5) and right side are formed is discharge chamber (5I), and discharge air separator (5) is by spiral separation blade (5-
3), the revolving body that exhaust cone section (5-2), exhaust tail pipeline section (5-1) are constituted from bottom to up, exhaust cone section (5-2), exhaust tail pipeline section
(5-1) is circumferentially evenly arranged venthole；
Sand control structural assembly includes gravitational settling cylinder (13), centrifugation sand-settling device (10), and gravitational settling cylinder (13) is lower end closed
Cylinder, has annular sand setting chamber and centrifugation sand setting chamber (10I), and annular sand setting chamber surrounds centrifugation sand setting chamber (10I) outside and phase
Logical, centrifugation sand-settling device (10) is set in centrifugation sand setting chamber (10I), and the setting of gravitational settling cylinder top carrys out liquid inlet disk (13b).
2. the exhaust sand control installation according to claim 1 for oil well pump, it is characterised in that: the centrifugation sand-settling device
(10) the opening cylinder being integrally formed by direct tube section and extension diameter section, extension diameter section are located at below direct tube section, and extension diameter section top is uniform
It is provided with the tangential sand export of sand-settling device (11), extension diameter section inner wall interleaved setting centrifuge separation blade (12), each centrifugation point
Blade gas vent (12a) is centrifugated from being uniformly arranged on blade (12).
3. the exhaust sand control installation according to claim 2 for oil well pump, it is characterised in that: the discharge chamber (5I)
Shape and inverted discharge air separator shape it is similar, the cyclonic action through spiral separation blade (5-3), the gas phase meeting of lightweight phase
It is gathered near exhaust tail pipeline section (5-1) and exhaust cone section (5-2), discharge chamber (5I) can further be conducive to gas phase in tailpipe
The aggregation of section and exhaust cone section, to make gas through exhaust tail pipeline section venthole (5a) and exhaust cone section venthole (5b) discharge pump
Cylinder.
4. the exhaust sand control installation according to claim 3 for oil well pump, it is characterised in that: the annular sand setting chamber
It is made of II grades of chambers (13II) of I grades of chambers (13I) of sand setting and sand setting, wherein coming liquid inlet disk (13b) and sand setting I grades of entrance (13c)
Between region form I grades of chambers (13I) of sand setting, the region between II grades of entrances (13d) of I grades of entrances (13c) of sand setting and sand setting
II grades of chambers (13II) of sand setting are formd, I grades of chambers (13I) of sand setting and sand setting II grades of chamber (13II) have collectively constituted gravitational settling cylinder
Effective sand setting space；Seepage flow hole (13a) is arranged in the upper end of second level sand-precipitating tube, between seepage flow hole (13a) and centrifugation sand-settling device (10)
Annular region form centrifugation sand setting chamber (10I).
5. the exhaust sand control installation according to claim 4 for oil well pump, it is characterised in that: described plunger (2) In
Under the promotion of oil pumping motor in the interior movement done up and down reciprocatingly of pump barrel (3), upstroke, fixed valve ball (7) is opened, Produced Liquid warp
The gravity of II grades of I grades of chambers (13I) of gravitational sand settling, sand setting chambers (13II) first based on sand facies itself plays the role of preliminary sand control, contains
There is the Produced Liquid of relatively small amount sand facies to play further sand controlling result through being centrifuged sand-settling device (10) again, from centrifugation sand-settling device (10)
Contain a large amount of condensate gas and solution gas in Produced Liquid out, the cyclonic separation effect through discharge air separator (5) is discharged into pit shaft
(14), liquid enters in pump barrel (3)；When down stroke, fixed valve ball (7) is closed, and pump barrel squeezes liquids and gases and enters exhaust
Chamber (5I) acts on, the intracavitary a small amount of gas of discharge pump through discharge air separator (5) cyclonic separation；It loops back and forth like this, takes out plunger
The purpose that oil pump plays exhaust sand control extends the service life of pump to improve pump efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882991.3A CN110485970B (en) | 2019-09-18 | 2019-09-18 | Exhaust sand prevention device for oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882991.3A CN110485970B (en) | 2019-09-18 | 2019-09-18 | Exhaust sand prevention device for oil well pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110485970A true CN110485970A (en) | 2019-11-22 |
| CN110485970B CN110485970B (en) | 2021-10-29 |
Family
ID=68558369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910882991.3A Active CN110485970B (en) | 2019-09-18 | 2019-09-18 | Exhaust sand prevention device for oil well pump |
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| CN110939426A (en) * | 2019-11-19 | 2020-03-31 | 东北石油大学 | Centrifugal separation mechanism and co-well injection and production device using same |
| CN110966168A (en) * | 2019-12-18 | 2020-04-07 | 东北石油大学 | Sand setting and exhausting device of plunger pump |
| CN113309497A (en) * | 2021-06-21 | 2021-08-27 | 托普威尔石油技术股份公司成都分公司 | Quick-falling plunger device |
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