CN106894798B - Oil extraction system and oil production method - Google Patents
Oil extraction system and oil production method Download PDFInfo
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- CN106894798B CN106894798B CN201710224288.4A CN201710224288A CN106894798B CN 106894798 B CN106894798 B CN 106894798B CN 201710224288 A CN201710224288 A CN 201710224288A CN 106894798 B CN106894798 B CN 106894798B
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- sucker rod
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Abstract
The invention discloses a kind of oil extraction system and oil production methods, wherein oil production method includes: that sucker rod can move back and forth along the vertical direction in first sleeve, when sucker rod is moved downward to the first predeterminated position, fixed valve is closed at this time, travelling valve is opened, so that in-place oil enters in oil rig, and first passage is by first runner and chamber at the same time, so that thin oil enters in chamber from first passage；When sucker rod is moved upward to the second predeterminated position, fixed valve is opened, travelling valve is closed, it is pumped into second channel to which script is located at the crude oil in oil rig, second channel passes through second flow channel and chamber, so that crude oil enters in the chamber of the first noumenon from second flow channel and mixes with thin oil, ground is given rise to through the second casing.The present invention using the above structure and method, can increase in-place oil yield, eliminate sucker rod and fluid column viscosity resistance extends roofbolt service life, reduction polished rod load.
Description
Technical field
The present invention relates to field of petroleum exploitation more particularly to a kind of oil extraction systems and oil production method.
Background technique
Mix dilute technique and be mainly used in crude oil and had preferable mobility in reservoir, during lifting to the ground by
Heat loss is than more serious in pit shaft, and with the reduction of temperature, viscosity of crude increases and gradually loses the oil well of mobility.Annular space
Mixing dilute mix dilute with hollow rod is the main two ways of the dilute technique of lifting thickened oil, as the popularization for mixing dilute technique occurs below
Problem.When dilute using annular blending, incorporation thin oil mix with in-place oil in annular space, and the well liquid that oil well pump is extracted out be thin oil with it is thick
The mixed liquor of oil, if being about that 1:1 is calculated according to dilute thick ratio is mixed, i.e., actual extraction crude oil degree is only the 50% of pumpage,
It is seldom to produce in-place oil amount；Hollow rod mix it is dilute due in hollow stem the limited incorporation thin oil amount in space expected drop is not achieved
Viscous effect leads to problems such as viscosity resistance is larger to cause roofbolt downlink difficult and rod parting.
Summary of the invention
Goal of the invention of the invention is, provides a kind of oil extraction system and oil production method, must can more preferably carry out
Dilute technique is mixed, at least one of to solve the above problems.
The embodiment of the present application discloses a kind of oil extraction system, comprising: first sleeve；It is partially disposed at the first sleeve
Sucker rod that is interior and can moving back and forth along the vertical direction；The second casing being set side by side with the first sleeve；It is arranged described
The first noumenon of second lower end, the first noumenon are provided with the chamber towards its upper side opening, the chamber and institute
State the connection of the second casing；Second ontology, second ontology are arranged on the sucker rod and are separated into the first sleeve
Mutually independent first chamber and the second chamber, wherein the first chamber is located at the top of the second chamber；It offers on second ontology from it
Upper side extends downwardly but does not penetrate through the first passage of the downside, offers on second ontology and faces upward from its downside
Extend but do not penetrate through the second channel of the upper side, offers first be connected to the first passage on second ontology
Runner and the second flow channel being connected to the second channel, the first passage and the first runner with the second channel
It is isolated with the second flow channel, the through hole extended along the vertical direction is offered on second ontology, so that the sucker rod
It is threaded through on second ontology by the through hole；Can Xi mechanism, the Can Xi mechanism are connected to first chamber；Oil pumping
Device is arranged in the lower part of the first sleeve, and can extract the crude oil in stratum out；The oil extraction system has at least two
A operating position, at the first operating position, the first passage is by the first runner and the chamber, second
When operating position, the second channel passes through the second flow channel and the chamber.
Preferably, the upper opening of second casing is above the ground level.
Preferably, the oil rig includes the second through-hole section that the lower end of the first sleeve is arranged in, is arranged in institute
State the fixed valve at the second through-hole section, be located at the sucker rod lower part and with the matched sleeve of the first sleeve, the sleeve
Top be connected to the second channel, the lower part of the sleeve offers first through hole portion, is arranged at the first through hole portion
There is travelling valve.
Preferably, the lateral wall of second ontology and the inner sidewall of the first sleeve match.
Preferably, when sucker rod is in down stroke, the first passage and the chamber.
Preferably, when sucker rod is in upstroke, the second channel and the chamber.
Preferably, the sucker rod is equipped with box cupling in the two sides of second ontology.
Preferably, the first runner is located at the surface of the second flow channel.
Preferably, the first passage is located at the surface of the second channel.
Preferably, the first runner is horizontally extending.
Preferably, the second flow channel is horizontally extending.
Preferably, the first noumenon is located at the side of the first passage, and the through hole is located at the first passage
The other side.
Preferably, the chamber includes the first horizontally extending cavity, and second extended along the vertical direction is empty
Chamber, the open topped of second cavity, first cavity can be directly connected to the first runner and the second flow channel.
Preferably, the oil extraction system includes wellhead assembly, the first sleeve, second casing, the sucker rod
It is threaded through on the wellhead assembly.
Disclosed herein as well is a kind of oil production methods using such as above-mentioned oil extraction system, comprising:
Sucker rod can move back and forth along the vertical direction in first sleeve, be moved downward to the first predeterminated position in sucker rod
When, the fixed valve is closed at this time, and the travelling valve is opened, so that in-place oil enters in the oil rig, and same with this
Shi Suoshu first passage is by the first runner and the chamber, so that thin oil enters in chamber from first passage；?
When sucker rod is moved upward to the second predeterminated position, the fixed valve is opened, and the travelling valve is closed, so that script is located at institute
The crude oil stated in oil rig is pumped into the second channel, and the second channel is connected by the second flow channel and the chamber
It is logical, so that crude oil is mixed from the chamber that second flow channel enters the first noumenon and with thin oil, give rise to ground through the second casing
Face.
The present invention using the above structure and method, can increase in-place oil yield, eliminate sucker rod and fluid column is viscous
Resistance extends roofbolt service life, reduces polished rod load.
Detailed description of the invention
Fig. 1 is a specific structural schematic diagram of the oil extraction system in the embodiment of the present application.
Fig. 2 is the partial schematic diagram of the oil extraction system in the embodiment of the present application, and it illustrates the first noumenons and the second ontology.
Fig. 3 is structural schematic diagram when oil extraction system in Fig. 1 is in the first operating position.
Fig. 4 is structural schematic diagram when oil extraction system in Fig. 1 is in the second operating position.
The appended drawing reference of the figures above: 1, first sleeve；11, the first chamber；12, the second chamber；13, location hole；2, sucker rod；
3, the second casing；4, the first noumenon；41, chamber；411, the first cavity；412, the second cavity；5, the second ontology；51, first is logical
Road；52, second channel；53, first runner；54, second flow channel；55, through hole；6, Can Xi mechanism；7, oil rig；71, it covers
Cylinder；72, travelling valve；73, fixed valve；74, first through hole portion；75, the second through-hole section；8, box cupling；9, wellhead assembly.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be understood by the person skilled in the art, apparent explicitly be defined to be made to protection scope of the present invention.
Shown in referring to Figures 1 and 2, the application embodiment discloses a kind of oil extraction system, including first sleeve 1；It wears
In the first sleeve 1 and the sucker rod 2 that can move back and forth along the vertical direction；Second casing 3；The first noumenon 4, described first
Ontology 4 is provided with the chamber 41 towards its upper side opening, and the chamber 41 is connected to second casing 3；Second ontology 5,
Second ontology 5 is arranged on the sucker rod 2 and the first sleeve 1 is separated into mutually independent first chamber 11 and the
Two chambers 12, wherein the first chamber 11 is located at the top of the second chamber 12；It offers on second ontology 5 and is extended downwardly from its upper side
But the first passage 51 of the downside is not penetrated through, is offered on second ontology 5 and is upwardly extended but do not pass through from its downside
Lead to the second channel 52 of the upper side, the first runner being connected to the first passage 51 is offered on second ontology 5
53 and the second flow channel 54 that is connected to the second channel 52, the first passage 51 and the first runner 53 are with described
Two channels 52 and the second flow channel 54 are isolated, and offer the through hole 55 extended along the vertical direction on second ontology 5, with
It is threaded through the sucker rod 2 on second ontology 5 by the through hole 55；Can Xi mechanism 6, the Can Xi mechanism 6 with
First chamber 11 is connected to；Oil rig 7 can extract the crude oil in stratum out；The oil extraction system has at least two works
Make position, at the first operating position, the first passage 51 is connected to by the first runner 53 with the chamber 41, the
When two operating positions, the second channel 52 is connected to by the second flow channel 54 with the chamber 41.
Specifically, the first sleeve 1 extends from the ground to underground along the vertical direction.In general, first sleeve 1 be with
The tubular of first lumen.The upper end of first sleeve 1 is rest on the ground, and the lower end of first sleeve 1 is located in stratum.Partial oil pumping
Bar 2 can protrude into the first sleeve 1 from the upper end of first sleeve 1.In the inner sidewall of first sleeve 1 and the outside of sucker rod 2
Annular space is formed between wall.Can Xi mechanism 6 is located on the ground, and be connected to the annular space, with can be to the annular sky
Between input mix thin liquid.Partial sucker rod 2 is located at outside the first sleeve 1.And the sucker rod 2 being located at outside first sleeve 1 can be with
Driving device connection, so that sucker rod 2 can move back and forth along the vertical direction under driving device effect.
Second casing 3 extends from the ground to underground along the vertical direction.Second casing 3 and the first sleeve 1 are arranged side by side
Setting.Second casing 3 is the tubular with the second lumen.The upper end of second casing 3 is rest on the ground, the lower end of the second casing 3
Positioned at subsurface.The upper end opening of second casing 3, so as to which collected crude oil is discharged from the upper end of the second casing 3.
The first noumenon 4 is arranged in 3 lower end of the second casing.The first noumenon 4 has a upwardly opening chamber 41,
The chamber 41 of the first noumenon 4 is connected to the second lumen of second casing 3.In the present embodiment, the first
The chamber 41 of body 4 includes the first horizontally extending cavity 411, and the second cavity 412 extended along the vertical direction, described
The open topped of second cavity 412, second cavity 412 is towards right side wall opening, so that first cavity 411 can be with institute
First runner 53 is stated directly to be connected to the second flow channel 54.
In the present embodiment, shown in referring to Figures 1 and 2, the left side wall of first sleeve 1 offers location hole 13, described
The right part of the first noumenon 4 is threaded through in the location hole 13.
In one preferred embodiment, the oil extraction system includes wellhead assembly 9, the first sleeve 1, described
Two casings 3, the sucker rod 2 are threaded through on the wellhead assembly 9.
The through hole 55 extended along the vertical direction is offered on second ontology 5.The sucker rod 2 passes through the perforation
Hole 55 is connected on the sucker rod 2, so that second ontology 5 can move back and forth along the vertical direction with the sucker rod 2.Institute
The lateral wall for stating the second ontology 5 is matched with the inner sidewall of the sleeve 71, the first sleeve 1 is separated into mutually independent
First chamber 11 and the second chamber 12 below the first chamber 11.First passage 51 is offered on second ontology 5.Described first
The upper side of channel 51 from second ontology 5 extends straight down but does not penetrate through the downside of second ontology 5.I.e. first
Channel 51 has opening upward, so that the first passage 51 is connected to first chamber 11.It is opened up on second ontology 5
There is the first runner 53 being connected to the first passage 51.First runner 53 towards second ontology 5 left side wall opening, with
The first runner 53 and the chamber 41 of the first noumenon 4 is set to be connected to.Second channel 52 on second ontology 5.It is described
Second channel 52, which is offered, to be extended upwardly vertically from the downside of second ontology 5 but not to penetrate through the upper of second ontology 5
Side.I.e. second channel 52 has opening directed downwardly, so that the second channel 52 is connected to second chamber 12.Preferably,
For rational Design on Plane, the first runner 53 and the second flow channel 54 are horizontally extending.The first runner 53
In the surface of the second flow channel 54, the first passage 51 is located at the surface of the second channel 52.Wherein, described
One ontology 4 is located at the left side of the first passage 51, and the through hole 55 is located at the right side of the first passage 51.
The oil rig 7 includes the second through-hole section 75 that the lower end of the first sleeve 1 is arranged in.In first sleeve 1
The second through-hole section 75 at be provided with fixed valve 73.The oil rig 7 further include be located at 2 lower part of sucker rod and with it is described
The matched sleeve 71 of first sleeve 1, the top of the sleeve 71 are connected to the second channel 52, and the lower part of the sleeve 71 is opened
Equipped with first through hole portion 74, travelling valve 72 is provided at the first through hole portion 74.The sleeve 71 can be with sucker rod 2 described
It is moved back and forth along the vertical direction in first sleeve 1.When travelling valve 72 is opened, the lower space of sleeve 71 and the sleeve 71
Upper space connection.When travelling valve 72 is closed, the lower space of sleeve 71 and 71 upper space of sleeve are disconnected.It is preferred that
Ground, the oil rig 7 can be tubing pump.
Referring to shown in Fig. 3, when sucker rod 2 is in down stroke, i.e., sucker rod 2 is moved downward, due to the body of the first chamber 11
Product becomes larger, and Can Xi mechanism 6 can be automatically injected thin oil from the first chamber of trend 11, and thin oil enters first passage 51.At the same time,
Fixed valve 73 is closed, and travelling valve 72 is opened, and in-place oil enters in the upper space of sleeve 71.When sucker rod 2 moves downwardly to
When the first operating position, the first passage 51 is connected to by the first runner 53 with the chamber 41, so that thin oil is from the
One channel 51 enters in chamber 41.
Referring to shown in Fig. 4, when pumping unit is in upstroke, fixed valve 73 is opened, and travelling valve 72 is closed, thus by underground
Crude oil is pumped into the lower space of sleeve 71.When sucker rod 2 moves up to the second operating position, the second channel 52 is logical
It crosses the second flow channel 54 to be connected to the chamber 41, so that script is located at the crude oil in the upper space of sleeve 71 from second
Road 54 enters in the chamber 41 of the first noumenon 4 and mixes with thin oil, gives rise to ground through the second casing 3.
In one preferred embodiment, the sucker rod 2 is equipped with box cupling 8 in the two sides of second ontology 5.
The embodiment of the present application has the characteristics that sucker rod 2 and crude oil frrction load are small, also has to mix on pump and dilute mixes thin liquid
The advantages that not influencing crude output into pump.
With annular blending dilute phase ratio, the embodiment of the present application is had the advantage that
1) by double tube pump on mix dilute institute's mixing light oil not into pump, no matter therefore mix it is dilute than for how many output in-place oil amounts it is equal
For 100% pumpage, and if annular blending is dilute dilute calculates output in-place oil than 1:1 and incorporation thin oil respectively accounts for pumpage to mix
50%, therefore mixed on double tube pump and dilute can greatly improve in-place oil yield；
2) it is separated due to mixing dilute the second casing of technique 3 on double tube pump with mixing light oil pipe, in 2 place mixing light oil pipe of sucker rod
For thin oil, bar-oil frictional resistance can be greatly reduced, reduce polished rod load, can effectively solve the problem that 2 downlink of sucker rod is hampered, horse head is beaten
The problems such as frame；
3) the dilute technique of annular blending is since thin oil and viscous crude be to make in annular space that there are longer foam sections in ring air mix
The propagation of sound wave is hindered, the indeterminacy of hydrodynamic face is caused, and double tube pumps the same conventional pumpingh well of oil jacket annulus for mixing dilute technique,
Facilitate the monitoring in hydrodynamic face.
Dilute phase ratio is mixed on the pump of hollow rod 2, the embodiment of the present application has the advantage that
It is to mix dilute viscous crude (with annular blending that the annular space between the hollow rod 2 of dilute technique and oil pipe is mixed on the pump of hollow rod 2
It is dilute essentially identical), if viscosity is still higher, still larger 2 downlink of sucker rod that will lead to of 2 friction in down stroke of hollow rod is difficult, and by
It is separated in mixing dilute the second casing of technique 3 on double tube pump with mixing light oil pipe, mixes thin liquid or dilute in 2 place power oil pipe of sucker rod
Oil significantly reduces the frictional resistance of sucker rod 2 Yu crude oil, efficiently solves that 2 downlink of sucker rod is hampered, horse head is fought etc. and asks
Topic, reduces polished rod load.
In addition, the embodiment of the present application also has the advantages that in terms of stress
1) frrction load: sucker rod 2 is contacted with thin oil, greatly reduces frrction load.
2) fluid column load: the fluid column of upstroke lifting is the mixed liquor in the second casing 3, smaller than pure crude oil liquid column load.
3) polished rod load: since fluid column load, frrction load are smaller, can choose the sucker rod 2 of lower grade, because
This roofbolt load is also relatively small.
In conclusion the embodiment of the present application and the mode of other devices compare as shown in table 1 below:
Table 1
Referring to figs. 1 to 4, the embodiment of the present application also discloses a kind of oil production method comprising sucker rod 2 can be
It is moved back and forth along the vertical direction in sleeve 1, when sucker rod 2 is moved downward to the first predeterminated position, the fixed valve at this time
73 close, and the travelling valve 72 is opened, so that in-place oil enters in the oil rig 7, and it is described first logical at the same time
Road 51 is connected to by the first runner 53 with the chamber 41, so that thin oil enters in chamber 41 from first passage 51；It is taking out
When beam hanger 2 is moved upward to the second predeterminated position, the fixed valve 73 is opened, and the travelling valve 72 is closed, thus by script position
It is pumped into the second channel 52 in the crude oil in the oil rig 7, the second channel 52 passes through the second flow channel 54
It is connected to the chamber 41, so that crude oil is mixed from the chamber 41 that second flow channel 54 enters the first noumenon 4 and with thin oil,
Ground is given rise to through the second casing 3.
Herein cited any digital value all include between lower limit value to upper limit value with the lower value of an incremented and
The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity an of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification
68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.
These are only intended to the example clearly expressed, it is believed that all possibility for the numerical value enumerated between minimum and peak
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range
" about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to cover that " about 20 to about
30 ", including at least the endpoint indicated.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Describing combined term " substantially by ... constitute " should include identified element, ingredient, component or step and reality
Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any
Attribute is all optional.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used to
The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except provided example all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring to appended claims and this
The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special
The disclosure of benefit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed
A part of subject matter.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (15)
1. a kind of oil extraction system characterized by comprising
First sleeve；
It is partially disposed at the sucker rod that can be moved back and forth in the first sleeve and along the vertical direction；
The second casing being set side by side with the first sleeve；
The first noumenon of second lower end is set, and the first noumenon is provided with the chamber towards its upper side opening
Room, the chamber are connected to second casing；
Second ontology offers the through hole extended along the vertical direction on second ontology, so that the sucker rod passes through institute
It states through hole to be threaded through on second ontology, the first sleeve is separated into mutually independent first chamber by second ontology
With the second chamber, wherein first chamber is located at the top of second chamber；Offered on second ontology from its upper side to
Lower extension but the first passage of its downside is not penetrated through, is offered on second ontology and upwardly extend but do not pass through from its downside
Lead to the second channel of its upper side, offered on second ontology first runner being connected to the first passage and with it is described
The second flow channel of second channel connection, the first passage and the first runner with the second channel and the second
Road isolation；
Can Xi mechanism, the Can Xi mechanism are connected to first chamber；
Oil rig is arranged in the lower part of the first sleeve, and can extract the crude oil in stratum out；
The oil extraction system has at least two operating positions, and at the first operating position, the first passage passes through described the
One runner and the chamber, at the second operating position, the second channel passes through the second flow channel and the chamber
Connection.
2. oil extraction system according to claim 1, which is characterized in that the upper opening of second casing is above the ground level.
3. oil extraction system according to claim 1, which is characterized in that the oil rig includes being arranged in the first set
Second through-hole section of the lower end of pipe, the fixed valve being arranged at second through-hole section, be located at the sucker rod lower part and with institute
The matched sleeve of first sleeve is stated, the top of the sleeve is connected to the second channel, and the lower part of the sleeve offers
One through-hole section is provided with travelling valve at the first through hole portion.
4. oil extraction system according to claim 1, which is characterized in that the lateral wall and the first set of second ontology
The inner sidewall of pipe matches.
5. oil extraction system according to claim 1, which is characterized in that when sucker rod is in down stroke, described first is logical
Road and the chamber.
6. oil extraction system according to claim 1, which is characterized in that when sucker rod is in upstroke, described second is logical
Road and the chamber.
7. oil extraction system according to claim 1, which is characterized in that the sucker rod is equal in the two sides of second ontology
Equipped with box cupling.
8. oil extraction system according to claim 1, which is characterized in that the first runner is being located at the second flow channel just
Top.
9. oil extraction system according to claim 1, which is characterized in that the first passage is being located at the second channel just
Top.
10. oil extraction system according to claim 1, which is characterized in that the first runner is horizontally extending.
11. oil extraction system according to claim 1, which is characterized in that the second flow channel is horizontally extending.
12. oil extraction system according to claim 1, which is characterized in that the first noumenon is located at the first passage
Side, the through hole are located at the other side of the first passage.
13. oil extraction system according to claim 1, which is characterized in that the chamber includes horizontally extending
One cavity, and the second cavity extended along the vertical direction, the open topped of second cavity, first cavity can with it is described
First runner is directly connected to the second flow channel.
14. oil extraction system according to claim 1, which is characterized in that the oil extraction system includes wellhead assembly, and described
Sleeve, second casing, the sucker rod are threaded through on the wellhead assembly.
15. a kind of oil production method using oil extraction system as claimed in claim 3 characterized by comprising
Sucker rod can move back and forth along the vertical direction in first sleeve, when sucker rod is moved downward to the first predeterminated position,
The fixed valve is closed at this time, and the travelling valve is opened, so that in-place oil enters in the oil rig, and institute at the same time
First passage is stated by the first runner and the chamber, so that thin oil enters in chamber from first passage；It is pumping
When bar is moved upward to the second predeterminated position, the fixed valve is opened, and the travelling valve is closed, so that script is located at the pumping
Crude oil in oily device is pumped into the second channel, the second channel by the second flow channel and the chamber,
So that crude oil is mixed from the chamber that second flow channel enters the first noumenon and with thin oil, ground is given rise to through the second casing.
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| CN201710224288.4A CN106894798B (en) | 2017-04-07 | 2017-04-07 | Oil extraction system and oil production method |
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| CN201710224288.4A CN106894798B (en) | 2017-04-07 | 2017-04-07 | Oil extraction system and oil production method |
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| CN111520115B (en) * | 2020-03-31 | 2022-04-29 | 东营市朝阳石油科技有限公司 | Zero-clearance oil-gas mixed pumping device and method |
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