CN106894798A - Oil extraction system and oil production method - Google Patents
Oil extraction system and oil production method Download PDFInfo
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- CN106894798A CN106894798A CN201710224288.4A CN201710224288A CN106894798A CN 106894798 A CN106894798 A CN 106894798A CN 201710224288 A CN201710224288 A CN 201710224288A CN 106894798 A CN106894798 A CN 106894798A
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- oil
- chamber
- sleeve
- sucker rod
- channel
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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 method, wherein oil production method includes：Sucker rod can vertically be moved back and forth in first sleeve, when sucker rod is moved downward to the first predeterminated position, now standing valve is closed, travelling valve is opened, so that in-place oil enters in oil rig, and at the same time first passage passes through first flow and chamber, so that thin oil enters in chamber from first passage；When sucker rod is moved upward to the second predeterminated position, standing valve is opened, travelling valve is closed, so as to the crude oil that script is located in oil rig is pumped into second channel, 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 sleeve pipe.The present invention uses above structure and method, can increase in-place oil yield, eliminate sucker rod and fluid column viscosity resistance extension roofbolt service life, reduces polished rod load.
Description
Technical field
The present invention relates to field of petroleum exploitation, more particularly to a kind of oil extraction system and oil production method.
Background technology
Mix dilute technique be mainly used in crude oil in reservoir have preferable mobility, earthward lift during by
Heat loss is than more serious in pit shaft, with the reduction of temperature, the oil well that viscosity of crude increases and gradually loses flowability.Annular space
It is the main two ways of the dilute technique of lifting thickened oil to mix dilute mixing dilute with hollow rod, with the popularization for mixing dilute technique occur in that it is following
Problem.Using annular blending it is dilute when, mix thin oil and mix in annular space with in-place oil, and the well liquid of pumped of pumping be thin oil with it is thick
The mixed liquor of oil, if according to the dilute thick ratio about 1 of incorporation：1 calculates, i.e., actual extraction crude oil degree is only the 50% of pumpage,
Extraction in-place oil amount is little；Hollow rod mix it is dilute due in hollow stem the limited incorporation thin oil amount in space do not reach expected drop
Viscous effect, causes the problems such as viscosity resistance is larger to cause the descending difficulty of roofbolt and rod parting.
The content of the invention
Goal of the invention of the invention is, there is provided a kind of oil extraction system and oil production method, it must more preferably can be carried out
Dilute technique is mixed, with least one in solving the above problems.
The embodiment of the present application discloses a kind of oil extraction system, including：First sleeve；It is partially disposed at the first sleeve
It is interior and can vertically reciprocating sucker rod；The second sleeve pipe being set up in parallel with the first sleeve；It is arranged on described
The first noumenon of the second its lower end, the first noumenon is provided with towards the open chamber of its upper side, the chamber and institute
State the connection of the second sleeve pipe；Second body, second body is arranged on the sucker rod and is separated into the first sleeve
Separate the first chamber and the second chamber, wherein the first chamber is located at the top in the second chamber；Offered from it on second body
Upper side extend downwardly but downside described in not insertion first passage, offered on second body from its downside upwardly
Extension but the second channel of upper side described in not insertion, first connected with the first passage is offered on second body
Runner and the second flow channel connected with the second channel, the first passage and the first flow with the second channel
With second flow channel isolation, the through hole for vertically extending is offered on second body, so that the sucker rod
It is located on second body by the through hole；Can Xi mechanisms, the Can Xi mechanisms connect with first chamber；Oil pumping
Device, its bottom for being arranged on the first sleeve, and the crude oil in stratum can be extracted out；The oil extraction system has at least two
Individual operating position, at the first operating position, the first passage passes through the first flow and the chamber, second
During operating position, the second channel is by the second flow channel and the chamber.
Preferably, the upper opening of second sleeve pipe is above the ground level.
Preferably, the oil rig includes the first through hole portion of the lower end for being arranged on the first sleeve, is arranged on institute
State the standing valve at first through hole portion, be located at the sucker rod bottom and the sleeve matched with the first sleeve, the sleeve
Top connected with the second channel, the bottom of the sleeve offers the second through-hole section, at second through-hole section set
There is travelling valve.
Preferably, the lateral wall of second body matches with the madial wall of the first sleeve.
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 both sides of second body.
Preferably, the first flow 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 flow 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
Opposite side.
Preferably, the chamber includes the first horizontally extending cavity, and the second sky for vertically extending
Chamber, the open topped of second cavity, first cavity can directly be connected with the first flow and the second flow channel.
Preferably, the oil extraction system includes wellhead assembly, the first sleeve, second sleeve pipe, the sucker rod
It is located on the wellhead assembly.
Disclosed herein as well is a kind of oil production method using oil extraction system described above, including：
Sucker rod can vertically be moved back and forth in first sleeve, and the first predeterminated position is moved downward in sucker rod
When, now the standing valve is closed, and the travelling valve is opened, so that in-place oil enters in the oil rig, and it is same with this
Shi Suoshu first passages are by the first flow 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 standing valve is opened, and the travelling valve is closed, so as to script is located at into 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 with the chamber
It is logical, so that crude oil enters in the chamber of the first noumenon from second flow channel and mixes with thin oil, give rise to ground through the second sleeve pipe
Face.
The present invention uses above structure and method, can increase in-place oil yield, elimination sucker rod and fluid column viscous
Resistance extends roofbolt service life, reduces polished rod load.
Brief description of the drawings
Fig. 1 is a specific structural representation 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, it illustrates the first noumenon and the second body.
Fig. 3 is structural representation when oil extraction system in Fig. 1 is in the first operating position.
Fig. 4 is structural representation when oil extraction system in Fig. 1 is in the second operating position.
The reference of the figures above：1st, first sleeve；11st, the first chamber；12nd, the second chamber；13rd, location hole；2nd, sucker rod；
3rd, the second sleeve pipe；4th, the first noumenon；41st, chamber；411st, the first cavity；412nd, the second cavity；5th, the second body；51st, first leads to
Road；52nd, second channel；53rd, first flow；54th, second flow channel；55th, through hole；6th, Can Xi mechanisms；7th, oil rig；71st, cover
Cylinder；72nd, standing valve；73rd, travelling valve；74th, first through hole portion；75th, the second through-hole section；8th, box cupling；9th, wellhead assembly.
Specific embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be understood by the person skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
Shown referring to Figures 1 and 2, the application implementation method discloses a kind of oil extraction system, including first sleeve 1；Wear
In the first sleeve 1 and can vertically reciprocating sucker rod 2；Second sleeve pipe 3；The first noumenon 4, described first
Body 4 is provided with towards the open chamber 41 of its upper side, and the chamber 41 is connected with second sleeve pipe 3；Second body 5,
Second body 5 is arranged on the sucker rod 2 and the first sleeve 1 is separated into separate the first chamber 11 and
Two chambers 12, wherein the first chamber 11 is located at the top in the second chamber 12；Offered on second body 5 and extended downwardly from its upper side
But the first passage 51 of downside described in not insertion, offers on second body 5 and is upwardly extended from its downside but do not passed through
Lead to the second channel 52 of the upper side, the first flow connected with the first passage 51 is offered on second body 5
53 and the second flow channel 54 that is connected with the second channel 52, the first passage 51 and the first flow 53 are with described
Two passages 52 and the second flow channel 54 are isolated, and the through hole 55 for vertically extending is offered on second body 5, with
The sucker rod 2 is set to be located on second body 5 by the through hole 55；Can Xi mechanisms 6, the Can Xi mechanisms 6 with
First chamber 11 connects；Oil rig 7, it 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 by the first flow 53 with the chamber 41,
During two operating positions, the second channel 52 is connected by the second flow channel 54 with the chamber 41.
Specifically, the first sleeve 1 vertically extends from the ground to underground.It is general, first sleeve 1 be with
The tubular of the first tube chamber.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 be stretched into the first sleeve 1 from the upper end of first sleeve 1.Madial wall and the outside of sucker rod 2 in first sleeve 1
Annular space is formed between wall.Can Xi mechanisms 6 are located on the ground, and connects with 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 outside first sleeve 1 can be with
Drive device is connected, so that sucker rod 2 can vertically be moved back and forth under drive device effect.
Second sleeve pipe 3 vertically extends from the ground to underground.Second sleeve pipe 3 is arranged side by side with the first sleeve 1
Set.Second sleeve pipe 3 is the tubular with the second tube chamber.The upper end of the second sleeve pipe 3 rest on the ground, the lower end of the second sleeve pipe 3
Positioned at subsurface.The upper end open of the second sleeve pipe 3, so as to make the crude oil for collecting be discharged from the upper end of the second sleeve pipe 3.
The first noumenon 4 is arranged on the lower end of the second sleeve pipe 3.The first noumenon 4 has a upwardly opening chamber 41,
The chamber 41 of the first noumenon 4 is connected with the second tube chamber of second sleeve pipe 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 for vertically extending, described
The open topped of the second cavity 412, second cavity 412 is towards right side wall opening, so that first cavity 411 can be with institute
First flow 53 is stated directly to be connected with the second flow channel 54.
In the present embodiment, shown 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 located in the location hole 13.
In one preferred embodiment, the oil extraction system includes wellhead assembly 9, the first sleeve 1, described the
Two sleeve pipes 3, the sucker rod 2 are located on the wellhead assembly 9.
The through hole 55 for vertically extending is offered on second body 5.The sucker rod 2 is by the insertion
Hole 55 is connected on the sucker rod 2, so that second body 5 can vertically be moved back and forth with the sucker rod 2.Institute
The lateral wall for stating the second body 5 is matched with the madial wall of the sleeve 71, the first sleeve 1 is separated into separate
First chamber 11 and the second chamber 12 positioned at the lower section of the first chamber 11.First passage 51 is offered on second body 5.Described first
Passage 51 extend straight down from the upper side of second body 5 but the second body 5 described in not insertion downside.I.e. first
Passage 51 has opening upward, so that the first passage 51 is connected with first chamber 11.Opened up on second body 5
There is the first flow 53 connected with the first passage 51.First flow 53 towards second body 5 left side wall opening, with
The first flow 53 is set to be connected with the chamber 41 of the first noumenon 4.Second channel 52 on second body 5.It is described
Second channel 52 offer from the downside of second body 5 upwardly vertically extend but the second body 5 described in not insertion it is upper
Side.I.e. second channel 52 has opening directed downwardly, so that the second channel 52 is connected with second chamber 12.Preferably,
For rational Design on Plane, the first flow 53 and the second flow channel 54 are horizontally extending.The first flow 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 body 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 first through hole portion 74 of the lower end for being arranged on the first sleeve 1.In first sleeve 1
First through hole portion 74 at be provided with standing valve 72.The oil rig 7 also include be located at the bottom of the sucker rod 2 and with it is described
The sleeve 71 of the matching of first sleeve 1, the top of the sleeve 71 is connected with the second channel 52, and the bottom of the sleeve 71 is opened
The second through-hole section 75 is provided with, travelling valve 73 is provided with second through-hole section 75.The sleeve 71 can be with sucker rod 2 described
Vertically moved back and forth in first sleeve 1.When travelling valve 73 is opened, the lower space of sleeve 71 and the sleeve 71
Upper space is connected.When travelling valve 73 is closed, the lower space of sleeve 71 disconnects with the upper space of the sleeve 71.It is preferred that
Ground, the oil rig 7 can be tubing pump.
Shown in reference picture 3, when sucker rod 2 is in down stroke, i.e., sucker rod 2 is moved downward, due to the body in the first chamber 11
Product becomes big, and Can Xi mechanisms 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,
Standing valve 72 is closed, and travelling valve 73 is opened, and in-place oil enters in the upper space of sleeve 71.When sucker rod 2 is moved downwardly to
During the first operating position, the first passage 51 is connected by the first flow 53 with the chamber 41, so that thin oil is from
One passage 51 enters in chamber 41.
Shown in reference picture 4, when oil pumper is in upstroke, standing valve 72 is opened, and travelling valve 73 is closed, so as to 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 leads to
Cross the second flow channel 54 to be connected with the chamber 41, so that the crude oil being located at originally in the upper space of sleeve 71 is from second
Road 54 enters in the chamber 41 of the first noumenon 4 and mixes with thin oil, and ground is given rise to through the second sleeve pipe 3.
In one preferred embodiment, the sucker rod 2 is equipped with box cupling 8 in the both sides of second body 5.
The characteristics of the embodiment of the present application has sucker rod 2 and crude oil frrction load small, also dilute mixes thin liquid with being mixed on pump
The advantages of not entering pump and do not influence crude output.
With annular blending dilute phase ratio, the embodiment of the present application has advantages below：
1) pump is not entered by mixing dilute institute's mixing light oil on double tube pump, no matter therefore mixing dilute than for how many output in-place oil amounts are equal
It is 100% pumpage, and if annular blending is dilute dilute compares 1 mixing:1 calculating output in-place oil respectively accounts for pumpage with thin oil is mixed
Being mixed on 50%, therefore double tube pump dilute can greatly improve in-place oil yield；
2) separated due to mixing the second sleeve pipe of dilute technique 3 and mixing light oil pipe on double tube pump, in the place mixing light oil pipe of sucker rod 2
Be thin oil, bar-oil frictional resistance can be greatly reduced, reduce polished rod load, can effectively solve the problem that sucker rod 2 it is descending be hampered, horse head is beaten
The problems such as frame；
3) the dilute technique of annular blending is because thin oil and viscous crude are in ring air mix so that there is foam section more long in annular space
The propagation of sound wave is hindered, causes the indeterminacy of hydrodynamic face, and the oil jacket annular space of dilute technique is mixed on double tube pump with routine pumpingh well,
Facilitate the monitoring in hydrodynamic face.
With dilute phase ratio is mixed on the pump of hollow rod 2, the embodiment of the present application has advantages below：
The annular space between the hollow rod 2 of dilute technique and oil pipe is mixed on the pump of hollow rod 2 to mix dilute viscous crude (with annular blending
It is dilute essentially identical), if viscosity is still higher, the friction in down stroke of hollow rod 2 still causes the descending difficulty of sucker rod 2 compared with conference, and by
Separated in the second sleeve pipe of dilute technique 3 and mixing light oil pipe is mixed on double tube pump, be to mix thin liquid or dilute in the place power oil pipe of sucker rod 2
Oil, significantly reduces the frictional resistance of sucker rod 2 and crude oil, efficiently solve sucker rod 2 it is descending be hampered, horse head is fought etc. asks
Topic, reduces polished rod load.
Additionally, the embodiment of the present application also has the following 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 sleeve pipe 3, smaller than pure crude oil liquid column load.
3) polished rod load：Because fluid column load, frrction load are smaller, therefore the sucker rod 2 of lower grade can be selected, because
This roofbolt load is also relatively small.
In sum, the embodiment of the present application contrasts as shown in table 1 below with the mode of other devices：
Table 1
Referring to figs. 1 to shown in Fig. 4, the embodiment of the present application also discloses a kind of oil production method, and it includes that sucker rod 2 can be
Vertically moves back and forth in sleeve 1, when sucker rod 2 is moved downward to the first predeterminated position, the now standing valve
72 close, and the travelling valve 73 opens, so that in-place oil enters in the oil rig 7, and at the same time described first lead to
Road 51 is connected by the first flow 53 with the chamber 41, so that thin oil enters in chamber 41 from first passage 51；Taking out
When beam hanger 2 is moved upward to the second predeterminated position, the standing valve 72 is opened, and the travelling valve 73 is closed, so that by script position
It is pumped into the second channel 52 in the crude oil in the oil rig 7, the second channel 52 is by the second flow channel 54
Connected with the chamber 41, so that crude oil enters in the chamber 41 of the first noumenon 4 from second flow channel 54 and mixes with thin oil,
Ground is given rise to through the second sleeve pipe 3.
Herein cited any digital value all include between lower limit to higher limit with a lower value for incremented and
The all values of upper value, the interval that there are at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity of part 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 to illustrate that also clearly listing such as 15 to 85,22 in the specification arrives
68th, 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 the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all scopes all include all numerals between end points and end points.It is used together with scope
" about " or " approximate " be suitable for two end points of the scope.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", at least end points including indicating.
The all articles and reference for disclosing, including patent application and publication, for various purposes by quoting knot
Together in this.The term " substantially by ... constitutes " for describing combination should include identified element, composition, part or step and reality
There is no other elements, composition, part or the step of the basic novel feature for influenceing the combination in matter.Using term "comprising" or
" including " combination of element here, composition, part or step is described it is also contemplated that basic by these elements, composition, part
Or the implementation method that step is constituted.Here by using term " can with ", it is intended to which illustrate that " can with " include is described any
Attribute is all optional.
Multiple element, composition, part or step can be provided by single integrated component, composition, part or step.Alternative
Ground, single integrated component, composition, part or step can be divided into multiple element, composition, part or the step of separation.It is used for
The open "a" or "an" of description element, composition, part or step is not said to exclude other elements, composition, part
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouching
State, many implementation methods and many applications outside the example for being provided all will be for a person skilled in the art aobvious and easy
See.Therefore, the scope of this teaching should not determine with reference to foregoing description, but should with reference to appended claims and this
The four corner of the equivalent that a little claims are possessed determines.It is for comprehensive purpose, all articles and special with reference to including
The disclosure of profit 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 for subject matter.
Each embodiment in this specification is described by the way of progressive, what each embodiment was stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.
The above embodiments merely illustrate the technical concept and features of the present invention, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this that it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.
Claims (15)
1. a kind of oil extraction system, it is characterised in that including：
First sleeve；
It is partially disposed in the first sleeve and can vertically reciprocating sucker rod；
The second sleeve pipe being set up in parallel with the first sleeve；
The first noumenon of second its lower end is arranged on, the first noumenon is provided with towards the open chamber of its upper side
Room, the chamber is connected with second sleeve pipe；
Second body, the through hole for vertically extending is offered on second body, so that the sucker rod passes through institute
State through hole to be located on second body, the first sleeve is separated into the first separate chamber by second body
With the second chamber, wherein first chamber be located at second chamber top；Offered on second body from its upper side to
Lower extension but the first passage of its downside of not insertion, offer on second body and are upwardly extended from its downside but do not passed through
Lead to the second channel of its upper side, offered on second body first flow that is connected with the first passage and with it is described
The second flow channel of second channel connection, the first passage and the first flow with the second channel and the second
Road isolates；
Can Xi mechanisms, the Can Xi mechanisms connect with first chamber；
Oil rig, its bottom for being arranged on the first sleeve, and the crude oil in stratum can be extracted out；
The oil extraction system has at least two operating positions, and at the first operating position, the first passage is by described the
One runner and the chamber, at the second operating position, the second channel is by the second flow channel and the chamber
Connection.
2. oil extraction system according to claim 1, it is characterised in that the upper opening of second sleeve pipe is above the ground level.
3. oil extraction system according to claim 1, it is characterised in that the oil rig includes being arranged on the first set
The first through hole portion of the lower end of pipe, the standing valve being arranged at the first through hole portion, be located at the sucker rod bottom and with institute
The sleeve of first sleeve matching is stated, the top of the sleeve connects with the second channel, the bottom of the sleeve offers the
Two through-hole sections, travelling valve is provided with second through-hole section.
4. oil extraction system according to claim 1, it is characterised in that the lateral wall of second body and the first set
The madial wall of pipe matches.
5. oil extraction system according to claim 1, it is characterised in that when sucker rod is in down stroke, described first leads to
Road and the chamber.
6. oil extraction system according to claim 1, it is characterised in that when sucker rod is in upstroke, described second leads to
Road and the chamber.
7. oil extraction system according to claim 1, it is characterised in that the sucker rod is equal in the both sides of second body
It is provided with box cupling.
8. oil extraction system according to claim 1, it is characterised in that the first flow is being located at the second flow channel just
Top.
9. oil extraction system according to claim 1, it is characterised in that the first passage is being located at the second channel just
Top.
10. oil extraction system according to claim 1, it is characterised in that the first flow is horizontally extending.
11. oil extraction systems according to claim 1, it is characterised in that the second flow channel is horizontally extending.
12. oil extraction systems according to claim 1, it is characterised in that the first noumenon is located at the first passage
Side, the through hole is located at the opposite side of the first passage.
13. oil extraction systems according to claim 1, it is characterised in that the chamber includes horizontally extending the
One cavity, and the second cavity for vertically extending, the open topped of second cavity, first cavity can with it is described
First flow is directly connected with the second flow channel.
14. oil extraction systems according to claim 1, it is characterised in that the oil extraction system includes wellhead assembly, described the
Sleeve, second sleeve pipe, the sucker rod are located on the wellhead assembly.
A kind of 15. oil production methods using oil extraction system as claimed in claim 3, it is characterised in that including：
Sucker rod can vertically be moved back and forth in first sleeve, when sucker rod is moved downward to the first predeterminated position,
Now the standing valve is closed, and the travelling valve is opened, so that in-place oil enters in the oil rig, and at the same time institute
First passage is stated by the first flow and the chamber, so that thin oil enters in chamber from first passage；In oil pumping
When bar is moved upward to the second predeterminated position, the standing valve is opened, and the travelling valve is closed, so as to script is located at into described taking out
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 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 sleeve pipe.
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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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| CN106894798B CN106894798B (en) | 2019-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520115A (en) * | 2020-03-31 | 2020-08-11 | 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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