CN106593833B - A kind of oil rig - Google Patents
A kind of oil rig Download PDFInfo
- Publication number
- CN106593833B CN106593833B CN201611122706.0A CN201611122706A CN106593833B CN 106593833 B CN106593833 B CN 106593833B CN 201611122706 A CN201611122706 A CN 201611122706A CN 106593833 B CN106593833 B CN 106593833B
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- China
- Prior art keywords
- pump barrel
- plunger
- valve
- oil rig
- tapered portion
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention discloses a kind of oil rig, including：Outer tube；The pump barrel being fixed in the outer tube；The pump barrel is provided with buffer gear, and the buffer gear can buffer the elongation when pump barrel is heated；Plunger mechanism in the pump barrel, it can be moved up and down in pump barrel；The plunger mechanism includes upward-traveling valves, plunger, lower travelling valve；The plunger is connected between the upward-traveling valves and the lower travelling valve；The outer wall of the plunger is bonded with the inwall of the pump barrel；The standing valve of the outer tube lower end is connected to, the standing valve is opened when the plunger mechanism is up and closed when the plunger is descending.
Description
Technical field
The present invention relates to the thickened oil recovery lifting device used in a kind of production of oil field, more particularly to a kind of oil rig.
Background technology
Entering the application of the Lifting Technique such as middle and later periods, steam drive, horizontal well, SAGD with oil field development will gradually increase
Add, the Lifting Technique problem such as bottom hole temperature (BHT) is high, lifting rate demand is big, corrosivity enhancing will become increasingly conspicuous.Opened with thick oil steam drive
Exemplified by adopting, downhole temperature can reach 300 DEG C or so, after formation fluid enters pit shaft, due to the change of pressure, corresponding water
Saturation temperature reduces, and the sensible heat of part water becomes the latent heat of vapor, drastically vaporized, and flash distillation and secondary flash occurs, dodges twice
The gas for the oil well pump that steaming is brought is hit, gas lock phenomenon；And high temperature deformation, key components and parts working surface come off, peel strip comes
Holddown phenomenon can have a strong impact on lifting equipment.Again by taking SAGD as an example, bottom hole temperature (BHT) is up to 240 DEG C, and part well H2S contents reach
More than 1400ppm, as bottom hole temperature (BHT) constantly raises, Korrosionsmedium largely separates out, the aggravation of chemical attack phenomenon, working surface
Corrosion and fouling, the wastage increase in lifting device work can be caused or even failed, the comprehensive function pair of these unfavorable factors
The influence of lifting equipment is very big.
At present, in sucker rod pump Lifting Technique, oil well pump uses metal material, in recent years, domestic external-open substantially in selection
Hair have developed ceramic pump lifting technology technology, and its important composition part plunger and pump barrel use ceramic composite structures, but due to
There is difference on the coefficient of expansion in metal and ceramics, and the connection between ceramic structure and metal structure is mostly to be directly connected to,
For example be threadedly coupled, cause fracture etc. so as to ceramic plunger and hardware dislocation, ceramic plunger shock metalwork occur
Phenomenon, this just directly result in holddown, wastage increase the problems such as, have a strong impact on produced on-site.Therefore, it is necessary to develop one
The new oil rig of kind, to meet steam drive development middle and later periods, SAGD etc. lifting demand.
The content of the invention
In view of the deficiencies in the prior art, the present invention provides a kind of oil rig, wrong can avoid producing in piston structure
Position, structural stability is improved, so as to meet steam drive development middle and later periods, SAGD etc. lifting demand.
To reach above-mentioned purpose, the present invention uses following technical scheme：
A kind of oil rig, including：
Outer tube；
The pump barrel being fixed in the outer tube；The pump barrel is provided with buffer gear, and the buffer gear can buffer institute
State elongation when pump barrel is heated；
Plunger mechanism in the pump barrel, it can be moved up and down in pump barrel；The plunger mechanism includes upper travelling
Valve, plunger, lower travelling valve；The plunger is connected between the upward-traveling valves and the lower travelling valve；The outer wall of the plunger
It is bonded with the inwall of the pump barrel；
The standing valve of the outer tube lower end is connected to, the standing valve is opened and described when the plunger mechanism is up
Closed when plunger is descending.
As a kind of preferable embodiment, the plunger is provided with anticorrosion portion；The anticorrosion portion is arranged at the post
On the surface of plug, to prevent the plunger from corroding.
As a kind of preferable embodiment, the pump barrel is provided with anticorrosion portion；The anticorrosion portion is arranged at the pump
On the surface of cylinder, to prevent the pump barrel from corroding.
As a kind of preferable embodiment, the anticorrosion portion plating is located on the lateral wall on the surface.
As a kind of preferable embodiment, the anticorrosion portion includes plating the Al set on said surface203Base ceramics apply
Layer.
As a kind of preferable embodiment, the Al203The thickness of base ceramic coating is 0.2 to 0.3 millimeter.
As a kind of preferable embodiment, the material of the plunger and the pump barrel is aluminium alloy.
As a kind of preferable embodiment, the hardness of the plunger is 900 ± 20Hv；The hardness in the anticorrosion portion is
900Hv to 1800Hv.
As a kind of preferable embodiment, the hardness of the pump barrel is 1000 ± 20Hv；The hardness in the anticorrosion portion
For 900Hv to 1800Hv.
As a kind of preferable embodiment, the upper end of the plunger mechanism is connected with disconnection mechanism；The disconnection mechanism
Including disconnection pawl, guide sleeves, guiding tube, core bar, retaining ring, the first spring, axle sleeve, reducer union；
The disconnection pawl is connected with helmet；The guide sleeves are threadedly connected to the upper end of the guiding tube, the guiding tube
Lower end be threadedly coupled the retaining ring；The guide sleeves, the guiding tube and retaining ring connection rear enclosure are located at described
On core bar, the axle sleeve is arranged outside the core bar and is located at the core positioned at the lower section of the retaining ring, first spring housing
Bar is outer and between the axle sleeve and the core bar；The reducer union is connected to the lower end of the core bar；First bullet
Retaining ring described in the upper end contact of spring, reducer union described in the contact of lower end.
As a kind of preferable embodiment, the upward-traveling valves include upper delivery connection, upward-traveling valves ball, upward-traveling valves
Seat；The upward-traveling valves seat is fixedly installed in the upper delivery connection；The upward-traveling valves ball is located in the upper delivery connection
And it is seated on the upward-traveling valves seat；The upper end of the upper delivery connection connects the reducer union；
The upper end of the plunger is connected with plunger connector；The plunger connector connects the lower end of the upper delivery connection；
The lower travelling valve includes travelling valve bonnet joint, travelling valve bonnet, lower travelling valve ball, lower travelling valve seat；It is described travelling
Valve bonnet joint connects the lower end of the plunger, and the travelling valve bonnet is connected to the lower end of the travelling valve bonnet joint；The downstream
Dynamic valve seat is fixedly installed in the travelling valve bonnet；The lower travelling valve ball be located in the travelling valve bonnet and be seated at it is described under
In travelling valve seat；The lower end of the travelling valve bonnet is connected with plunger lower contact.
As a kind of preferable embodiment, the plunger includes multiple end to end plunger tubes.
As a kind of preferable embodiment, helmet that the outer tube includes being sequentially connected, releasing coupling, the first body,
Tubing coupling, the second body, pump barrel lower contact, support tube；The upper end of the pump barrel is connected with regulation ring；The regulation ring passes through
Adjust joint and connect second body；The inwall of the pump barrel lower contact is provided with the 3rd limited step；The lower end of the pump barrel
It is against on the 3rd limited step.
As a kind of preferable embodiment, the pump barrel includes upper pump barrel and lower pump barrel；The buffer gear includes setting
It is placed in the first buffer part of the lower end of the upper pump barrel and is arranged at the second buffer part of the upper end of the lower pump barrel；It is described
Elongation when first buffer part matches locking to buffer the upper pump barrel and heated lower pump barrel with second buffer part.
As a kind of preferable embodiment, first buffer part is arranged at the lateral wall of the upper pump barrel；Described
Two buffer parts are arranged at the madial wall of the lower pump barrel.
As a kind of preferable embodiment, first buffer part includes the first tapered portion and positioned at the first taper
First limited step of portion upper end；Second buffer part include the second tapered portion and positioned at the second tapered portion upper end the
Two limited steps；First tapered portion stretches into second tapered portion and is bonded locking with second tapered portion；Described
Gap, the upper end of second tapered portion and the described first limit are provided between the lower end of one tapered portion and second limited step
Gap is provided between the step of position.
As a kind of preferable embodiment, the external diameter of the upper pump barrel gradually subtracts downwards in first tapered portion
It is small；The gradually increase upwards in second tapered portion of the internal diameter of the lower pump barrel.
As a kind of preferable embodiment, the buffer gear includes being arranged at the 3rd buffering of the upper end of the pump barrel
Portion and be arranged at the regulation ring lower end the 4th buffer part；The regulation joint pushes the regulation ring so that described
3rd buffer part and the 4th buffer part match locking, so as to buffer the elongation when pump barrel is heated.
As a kind of preferable embodiment, the pump barrel is structure as a whole.
As a kind of preferable embodiment, the standing valve includes standing valve top connection, spring base, second spring, valve
Body, push rod, valve pocket, fixed valve ball, fixed valve base, standing valve lower contact；
The upper end of the standing valve top connection connects the lower end of the support tube；The lower end connection of the standing valve top connection
The valve body；The spring base is sheathed on outside the push rod and in the standing valve top connection with the second spring；Institute
Valve pocket, the fixed valve ball and the fixed valve base is stated to be located in the valve body；Work of the push rod in the second spring
The fixed valve ball is pushed under；The standing valve lower contact connects the lower end of the valve body.
By above technical scheme, oil rig of the invention passes through buffer gear by being provided with buffer gear in pump barrel
Elongation buffering after pump barrel expanded by heating is fallen, avoids the occurrence of structure dislocation, so that pump barrel is more stable in outer tube.Together
When, when the coefficient of expansion of pump barrel and outer tube is distinct, buffer gear can make connection of the pump barrel in outer tube more stable,
So as to which the situation that existing conventional ceramic pump is directly connected to extrude ceramic member rupture caused by coefficient of expansion difference will not be produced.
With reference to following explanation and accompanying drawing, only certain exemplary embodiments of this invention is disclose in detail, specifies the original of the present invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in scope.In appended power
In the range of the spirit and terms that profit requires, embodiments of the present invention include many changes, modifications and are equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
Used in individual other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those skilled in the art, without having to pay creative labor, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the oil rig structural representation that one embodiment of the present invention provides；
Fig. 2 is the upper part structural representation of oil rig shown in Fig. 1；
Fig. 3 is the center section structural representation of oil rig shown in Fig. 1；
Fig. 4 is the lower part structural representation of oil rig shown in Fig. 1.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained on the premise of creative work is not made, should all belong to guarantor of the present invention
The scope of shield.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
The arbitrary and all combination of related Listed Items.
Fig. 1 to Fig. 4 is referred to, a kind of structural representation of the oil rig provided for one embodiment of the present invention.
In present embodiment, the oil rig includes：Outer tube；The pump barrel being fixed in the outer tube；The pump barrel is provided with buffer
Structure 100, the buffer gear 100 can buffer the elongation when pump barrel is heated；Plunger mechanism in the pump barrel,
It can be moved up and down in pump barrel；The plunger mechanism includes upward-traveling valves, plunger 20, lower travelling valve；The plunger 20 connects
Between the upward-traveling valves and the lower travelling valve；The outer wall of the plunger 20 is bonded with the inwall of the pump barrel；It is connected to
The standing valve of the outer tube lower end, the standing valve are opened when the plunger mechanism is up and closed when the plunger 20 is descending
Close.
By above technical scheme, the oil rig of present embodiment in pump barrel by being provided with buffer gear 100, by slow
Punch mechanism 100 by after pump barrel expanded by heating elongation buffering fall, avoid the occurrence of structure dislocation so that pump barrel in outer tube more
Add stabilization.Meanwhile when the coefficient of expansion of pump barrel and outer tube is distinct, buffer gear 100 can make pump barrel in outer tube
Connection is more stable, is directly connected to extrude ceramic member caused by coefficient of expansion difference so as to produce existing conventional ceramic pump
The situation of rupture.
In the present embodiment, the upper end of the plunger mechanism is connected with disconnection mechanism；The disconnection mechanism includes disconnecting
Pawl 3, guide sleeves 5, guiding tube 4, core bar 7, retaining ring 8, the first spring 9, axle sleeve 10, reducer union 11.
The disconnection pawl 3 is connected with helmet 1；The guide sleeves 5 are threadedly connected to the upper end of the guiding tube 4, described to draw
The lower end of conduit 4 is threadedly coupled the retaining ring 8；After the guide sleeves 5, the guiding tube 4 and the retaining ring 8 connect
It is sheathed on the core bar 7, the axle sleeve 10 is arranged outside the core bar 7 and positioned at the lower section of the retaining ring 8, first bullet
Spring 9 is sheathed on outside the core bar 7 and between the axle sleeve 10 and the core bar 7；The reducer union 11 is connected to described
The lower end of core bar 7；Retaining ring 8 described in the upper end contact of first spring 9, reducer union 11 described in the contact of lower end.First bullet
Spring 9 is pressed between retaining ring 8 and reducer union 11.
Wherein, disconnection mechanism can be connected between sucker rod and plunger mechanism.In the present embodiment, using disconnection machine
Structure connecting with pumping rod and plunger mechanism be because the external diameter of normal conditions lower plunger 20 exceedes the internal diameter of connected pipes, can not directly from
Well head tripping in.Disconnection mechanism is set to be easy to plunger 20 to go into the well.
In the present embodiment, the upward-traveling valves include upper delivery connection 12, upward-traveling valves ball 14, upward-traveling valves seat
15；The upward-traveling valves seat 15 is fixedly installed in the upper delivery connection 12；The upward-traveling valves ball 14 is positioned at described fuel-displaced
In joint 12 and it is seated on the upward-traveling valves seat 15；The upper end of the upper delivery connection 12 connects the reducer union 11.
The upper end of the plunger 20 is connected with plunger connector 16；The plunger connector 16 connects the lower end of the upper delivery connection 12.
The lower travelling valve includes travelling valve bonnet joint 25, travelling valve bonnet 26, lower travelling valve ball 27, lower travelling valve seat 28；
The travelling valve bonnet joint 25 connects the lower end of the plunger 20, and the travelling valve bonnet 26 is connected to the travelling valve bonnet joint 25
Lower end；The lower travelling valve seat 28 is fixedly installed in the travelling valve bonnet 26；The lower travelling valve ball 27 is located at the trip
In dynamic valve bonnet 26 and it is seated on the lower travelling valve seat 28；The lower end of the travelling valve bonnet 26 is connected with plunger lower contact 29.
Wherein, plunger 20 is referred to as plunger tube, and the plunger 20 can include multiple end to end plunger tubes.
In the present embodiment, the plunger 20 can be provided with anticorrosion portion.The anticorrosion portion is arranged at the plunger
On 20 surface, to prevent the plunger 20 from corroding.Meanwhile the pump barrel is provided with anticorrosion portion；The anticorrosion portion is arranged at
On the surface of the pump barrel, to prevent the pump barrel from corroding.
The anticorrosion portion plating is set on said surface.For example it can be processed in the form of electroplating surface ceramics.Preferably
, the madial wall plating of the lateral wall and pump barrel of plunger 20 is provided with anticorrosion portion.The inwall (madial wall) and pump barrel of plunger 20
Outer wall (lateral wall) can need not plate the corrosion portion that sets up defences.
The anticorrosion portion includes plating the Al set on said surface203Base ceramic coating (hard Al-based coating).So set
Put, the pump barrel of the oil rig of present embodiment, plunger 20 can be caused not only corrosion-resistant and wear-resistant and in high temperature
Under be unlikely to deform so that the oil rig of present embodiment can under high temperature well not holddown, do not miss, be corrosion-resistant and do not tie
Dirt, so as to effectively extend the service life and pump efficiency of device, meet what sucker rod pump under thickened oil recovery hot environment lifted
Job requirement.Further, the Al203The thickness of base ceramic coating is 0.2 to 0.3 millimeter.
For lift structure intensity, the material of the plunger 20 and the pump barrel can be aluminium alloy.It is arranged such, is not easy to produce
The problem of raw existing lifting device easy using ceramic member fragmentation.Specifically, the hardness of the plunger 20 is 900 ± 20Hv；It is described
The hardness in anticorrosion portion is 900Hv to 1800Hv.The hardness of the pump barrel is 1000 ± 20Hv；The hardness in the anticorrosion portion is
900Hv to 1800Hv.
The outer tube includes helmet 1, releasing coupling 2, the first body 4, tubing coupling 13, the second body being sequentially connected
19th, pump barrel lower contact 23, support tube 24；The upper end of the pump barrel is connected with regulation ring 18；The regulation ring 18 is connect by regulation
First 17 connection second body 19；The inwall of the pump barrel lower contact 23 is provided with the 3rd limited step 231；Under the pump barrel
End is against on the 3rd limited step 231.
In the present embodiment, buffer gear 100 is referred to as self-locking mechanism.Buffer gear 100 can be arranged at pump
The connecting portion of cylinder.When pump barrel is by thermal stretching, the cushion space of pump barrel elongation can be provided in the connecting portion of pump barrel.Should
Connecting portion can be that pump barrel connects other assemblies or partial connecting portion, or the connecting portion of pump barrel therein
Position.Certainly, when pump barrel is not by thermal stretching, the connecting portion of pump barrel can provide rigid support, avoid connection loosely.
In one embodiment, pump barrel can be that split constructs, and connect to be formed by multistage, consequently facilitating manufacture.It is described
Pump barrel 21 includes upper pump barrel 21 and lower pump barrel 22.The buffer gear 100 includes being arranged at the of the lower end of the upper pump barrel 21
One buffer part and be arranged at the lower pump barrel 22 upper end the second buffer part；First buffer part is slow with described second
The portion of punching matches locking to buffer elongation when the upper pump barrel 21 and lower pump barrel 22 are heated.
Wherein, one of the first buffer part and the second buffer part can be arranged on lateral wall, another to be arranged on madial wall.
One of first buffer part and the second buffer part can be stretched into partly in another, and are brought into close contact.Specifically, as shown in figure 1, institute
State the lateral wall that the first buffer part is arranged at the upper pump barrel 21；Second buffer part is arranged at the inner side of the lower pump barrel 22
Wall.
As shown in figure 3, first buffer part includes the first tapered portion 102 and positioned at the upper end of the first tapered portion 102
First limited step 101.Second buffer part include the second tapered portion 103 and positioned at the upper end of the second tapered portion 103 the
Two limited steps 104.Wherein, the external diameter of the upper pump barrel 21 is gradually reduced downwards in first tapered portion 102；Under described
The gradually increase upwards in second tapered portion 103 of the internal diameter of pump barrel 22.
First tapered portion 102 stretches into second tapered portion 103 and is bonded locking with second tapered portion 103.
Gap is provided between the lower end of first tapered portion 102 and second limited step 104, second tapered portion 103
Gap is provided between upper end and first limited step 101.
As shown in figure 3, the first tapered portion 102 with the second tapered portion 103 when such as figure position is bonded, the first tapered portion 102
It can not continue to stretch into the second tapered portion 103 so that the two is clamped on such as figure position so that under first tapered portion 102
Gap be present between end and second limited step 104, and the upper end of second tapered portion 103 and described first spacing
Gap be present between step 101.
In interstitial site, the first tapered portion 102 and the second tapered portion 103 leave the conical surface, so as to upper pump barrel 21 and under
When pump barrel 22 is by thermal stretching, upper pump barrel 21 can interstitial site the conical surface effect under be easy to extend downwards, lower pump barrel 22
It is easy to extend upwards under the conical surface effect of gap position, and then the elongation buffering of the two is fallen.Meanwhile upper pump barrel 21 and lower pump barrel
After 22 further extend, the first tapered portion 102 is further locked with the second tapered portion 103, is more securely connected so as to provide
Construction, the stability of further reinforcement structure.
In another embodiment, the buffer gear 100 can also include the upper end for being arranged at the pump barrel 21
3rd buffer part and be arranged at the regulation ring 18 lower end the 4th buffer part.The regulation joint 17 pushes the tune
Section ring 18 locking so that the 3rd buffer part and the 4th buffer part match, so as to buffer when the pump barrel 21 is heated
Elongation.Wherein, it can be threadedly coupled to adjust between joint 17 and the second body 19, can be by by rotating regulation joint 17
Pump barrel 21 is pressed between the limited step of regulation ring 18 and the 3rd.
Wherein, the structure and function of the 3rd buffer part and the 4th buffer part may be referred to the first buffer part and the second buffering
The structure and function in portion, no longer repeat one by one in present embodiment.
In the present embodiment, buffer gear 100 is arranged at the connecting portion of pump barrel 21 and miscellaneous part (regulation ring 18),
Therefore the therein of pump barrel 21 can need not set buffer gear 100, so pump barrel 21 can be one in the present embodiment
Body structure.
In the present embodiment, using the standing valve of strong on-off structure, by the way that water can be successfully managed using the standing valve
The fixed valve ball 36 occurred in horizontal well and thickened oil recovery can not resilience problem.Specifically, the standing valve can include standing valve
Top connection 30, spring base 31, second spring 32, valve body 33, push rod 34, valve pocket 35, fixed valve ball 36, fixed valve base 37, fixation
Valve lower contact 38.
Wherein, the upper end of the standing valve top connection 30 connects the lower end of the support tube 24；The standing valve top connection
30 lower end connects the valve body 33；The spring base 31 is sheathed on outside the push rod 34 with the second spring 32 and is located at institute
State in standing valve top connection 30；The valve pocket 35, the fixed valve ball 36 and the fixed valve base 37 are located at the valve body 33
It is interior；The push rod 34 pushes the fixed valve ball 36 in the presence of the second spring 32；The standing valve lower contact 38 connects
Connect the lower end of the valve body 33.Wherein, the standing valve lower contact 38 can be connected with helmet 39.
The course of work for the oil rig that present embodiment is provided is described in detail with reference to Fig. 1, preferably to explain
Address the understanding present invention.
Before tripping in, helmet 1 is removed on releasing coupling 2, unties the threaded connection of disconnection pawl 3 and helmet 1.Oil pumping is filled
Put and be connected with oil pipe, is lowered into oil reservoir.Then, after disconnection pawl 3 is connected with sucker rod, in tripping in oil pipe, until disconnection pawl 3
Contacted with core bar 7.Continue to transfer, disconnection pawl 3 catches the groove of core bar 7 in the presence of retaining ring 8, so as to complete sucker rod
With the connection work of plunger mechanism.
During upstroke, plunger 20 is above carried, space becomes big between lower travelling valve and standing valve, and pressure reduces, fixed
Valve is opened, and crude oil enters in oil rig.During down stroke, space diminishes between lower travelling valve and standing valve, and pressure increases
Add, force travelling valve to be opened, so that oil enters in oil pipe, operation is repeated to complete the exploitation to oil reservoir.
When terminating exploitation, sucker rod is lifted outside well, drives plunger mechanism to move up.When guide sleeves 5 contact with releasing coupling 2
When, because the external diameter of guide sleeves 5 is more than the internal diameter of releasing coupling 2, continuing above to carry will be such that disconnection pawl 3 is separated with core bar 7, can use afterwards
Go out sucker rod, oil rig body (miscellaneous part) takes out with oil pipe.
Herein cited any digital value all include between lower limit to higher limit with the lower value of an incremented and
The all values of upper value, the interval of at least two units between any lower value and any much higher value be present.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 such as 15 to 85,22 are also clearly listed in the specification arrives
68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, it is 0.0001,0.001,0.01,0.1 suitably to think a unit.
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 " approximation " be suitable for two end points of the scope.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", including at least the end points indicated.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Describe the term " substantially by ... forms " of combination should include determined by element, composition, part or step and reality
Other elements, composition, part or the step of the basic novel feature of the combination are not influenceed in matter.Using term "comprising" or
" comprising " describes the combination of element here, composition, part or step it is also contemplated that substantially by these elements, composition, part
Or the embodiment that step is formed.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.It is 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" for describing 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 retouch
State, many embodiments and many applications outside the example provided all will be aobvious and easy for a person skilled in the art
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.
Claims (19)
- A kind of 1. oil rig, it is characterised in that including：Outer tube；The pump barrel being fixed in the outer tube；The pump barrel is provided with buffer gear, and the buffer gear can buffer the pump Elongation when cylinder is heated；Plunger mechanism in the pump barrel, it can be moved up and down in pump barrel；The plunger mechanism includes upward-traveling valves, post Plug, lower travelling valve；The plunger is connected between the upward-traveling valves and the lower travelling valve；The outer wall of the plunger with it is described The inwall fitting of pump barrel；It is connected to the standing valve of the outer tube lower end, the standing valve is opened and descending in the plunger when the plunger is up When close；The pump barrel includes upper pump barrel and lower pump barrel；The first of lower end of the buffer gear including being arranged at the upper pump barrel is slow Rush portion and be arranged at the second buffer part of the upper end of the lower pump barrel；First buffer part and the second buffer part phase Elongation when matching locking is to buffer the upper pump barrel and heated lower pump barrel.
- 2. oil rig as claimed in claim 1, it is characterised in that：The plunger is provided with anticorrosion portion；The anticorrosion portion It is arranged on the surface of the plunger, to prevent the plunger from corroding.
- 3. oil rig as claimed in claim 1, it is characterised in that：The pump barrel is provided with anticorrosion portion；The anticorrosion portion It is arranged on the surface of the pump barrel, to prevent the pump barrel from corroding.
- 4. oil rig as claimed in claim 2 or claim 3, it is characterised in that：The anticorrosion portion plating is set on said surface.
- 5. oil rig as claimed in claim 4, it is characterised in that：The anticorrosion portion includes plating and set on said surface Al203Base ceramic coating.
- 6. oil rig as claimed in claim 5, it is characterised in that：The Al203The thickness of base ceramic coating is 0.2 to 0.3 Millimeter.
- 7. the oil rig as described in claim 5 or 6, it is characterised in that：The material of the plunger and the pump barrel is closed for aluminium Gold.
- 8. the oil rig as described in Claims 2 or 3 is any, it is characterised in that：The hardness of the plunger is 900 ± 20Hv； The hardness in the anticorrosion portion is 900Hv to 1800Hv.
- 9. the oil rig as described in Claims 2 or 3 is any, it is characterised in that：The hardness of the pump barrel is 1000 ± 20Hv； The hardness in the anticorrosion portion is 900Hv to 1800Hv.
- 10. oil rig as claimed in claim 1, it is characterised in that：The upper end of the plunger mechanism is connected with disconnection mechanism； The disconnection mechanism includes disconnection pawl, guide sleeves, guiding tube, core bar, retaining ring, the first spring, axle sleeve, reducer union；The disconnection pawl is connected with helmet；The guide sleeves are threadedly connected to the upper end of the guiding tube, under the guiding tube End is threadedly coupled the retaining ring；The guide sleeves, the guiding tube and retaining ring connection rear enclosure are located at the core bar On, the axle sleeve is arranged outside the core bar and positioned at the lower section of the retaining ring, first spring housing is outside the core bar And between the axle sleeve and the core bar；The reducer union is connected to the lower end of the core bar；First spring Retaining ring described in the contact of upper end, reducer union described in the contact of lower end.
- 11. oil rig as claimed in claim 10, it is characterised in that：The upward-traveling valves include upper delivery connection, upstream Dynamic valve ball, upward-traveling valves seat；The upward-traveling valves seat is fixedly installed in the upper delivery connection；The upward-traveling valves ball is located at institute State in delivery connection and be seated on the upward-traveling valves seat；The upper end of the upper delivery connection connects the reducer union；The upper end of the plunger is connected with plunger connector；The plunger connector connects the lower end of the upper delivery connection；The lower travelling valve includes travelling valve bonnet joint, travelling valve bonnet, lower travelling valve ball, lower travelling valve seat；The travelling valve bonnet Joint connects the lower end of the plunger, and the travelling valve bonnet is connected to the lower end of the travelling valve bonnet joint；The lower travelling valve Seat is fixedly installed in the travelling valve bonnet；The lower travelling valve ball is located in the travelling valve bonnet and is seated at described lower travelling On valve seat；The lower end of the travelling valve bonnet is connected with plunger lower contact.
- 12. oil rig as claimed in claim 11, it is characterised in that：The plunger includes multiple end to end plungers Pipe.
- 13. the oil rig as described in claim 11 or 12, it is characterised in that：The outer tube include be sequentially connected helmet, Releasing coupling, the first body, tubing coupling, the second body, pump barrel lower contact, support tube；The upper end of the pump barrel is connected with tune Save ring；The regulation ring connects second body by adjusting joint；It is spacing that the inwall of the pump barrel lower contact is provided with the 3rd Step；The lower end of the pump barrel is against on the 3rd limited step.
- 14. oil rig as claimed in claim 11, it is characterised in that：First buffer part is arranged at the upper pump barrel Lateral wall；Second buffer part is arranged at the madial wall of the lower pump barrel.
- 15. oil rig as claimed in claim 14, it is characterised in that：First buffer part include the first tapered portion, with And the first limited step positioned at the first tapered portion upper end；Second buffer part includes the second tapered portion and positioned at second Second limited step of tapered portion upper end；First tapered portion stretches into second tapered portion and pasted with second tapered portion Close locking；Be provided with gap between the lower end of first tapered portion and second limited step, second tapered portion it is upper Gap is provided between end and first limited step.
- 16. oil rig as claimed in claim 15, it is characterised in that：The internal diameter of the upper pump barrel is in first tapered portion On be gradually reduced upwards；The gradually increase downwards in second tapered portion of the external diameter of the lower pump barrel.
- 17. oil rig as claimed in claim 13, it is characterised in that：The buffer gear includes being arranged at the pump barrel 3rd buffer part of upper end and be arranged at the regulation ring lower end the 4th buffer part；The regulation joint pushes described Regulation ring locking so that the 3rd buffer part and the 4th buffer part match, so as to buffer the stretching when pump barrel is heated Long amount.
- 18. oil rig as claimed in claim 17, it is characterised in that：The pump barrel is structure as a whole.
- 19. oil rig as claimed in claim 13, it is characterised in that：The standing valve includes standing valve top connection, spring Seat, second spring, valve body, push rod, valve pocket, fixed valve ball, fixed valve base, standing valve lower contact；The upper end of the standing valve top connection connects the lower end of the support tube；Described in the lower end connection of the standing valve top connection Valve body；The spring base is sheathed on outside the push rod and in the standing valve top connection with the second spring；The valve Set, the fixed valve ball and the fixed valve base are located in the valve body；The push rod is in the presence of the second spring Push the fixed valve ball；The standing valve lower contact connects the lower end of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611122706.0A CN106593833B (en) | 2016-12-08 | 2016-12-08 | A kind of oil rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611122706.0A CN106593833B (en) | 2016-12-08 | 2016-12-08 | A kind of oil rig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593833A CN106593833A (en) | 2017-04-26 |
| CN106593833B true CN106593833B (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611122706.0A Active CN106593833B (en) | 2016-12-08 | 2016-12-08 | A kind of oil rig |
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| CN (1) | CN106593833B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852844A (en) * | 2019-04-30 | 2020-10-30 | 中国石油天然气股份有限公司 | Flexible metal oil well pump device in horizontal well and resetting device of fixed valve ball |
| CN113374678B (en) * | 2020-02-25 | 2023-11-28 | 中国石油天然气股份有限公司 | Forced reset wear-resistant corrosion-resistant sulfur-resistant oil pump |
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| US4133516A (en) * | 1976-10-22 | 1979-01-09 | Christensen, Inc. | Shock absorber for well drilling pipe |
| CN103527454A (en) * | 2013-10-10 | 2014-01-22 | 白霞 | Blocking type blowout-control oil well pump |
| CN204371623U (en) * | 2014-11-06 | 2015-06-03 | 中国石油天然气股份有限公司 | Oil well pump |
| CN204458326U (en) * | 2014-12-31 | 2015-07-08 | 中国石油天然气股份有限公司 | A kind of graded ceramic plunger |
| CN104929928A (en) * | 2015-06-01 | 2015-09-23 | 中国科学院力学研究所 | Oil well pump and manufacturing method thereof |
| CN204941873U (en) * | 2015-07-27 | 2016-01-06 | 中国石油天然气股份有限公司 | A kind of integeral tube pumping pump |
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|---|---|---|---|---|
| US4133516A (en) * | 1976-10-22 | 1979-01-09 | Christensen, Inc. | Shock absorber for well drilling pipe |
| CN103527454A (en) * | 2013-10-10 | 2014-01-22 | 白霞 | Blocking type blowout-control oil well pump |
| CN204371623U (en) * | 2014-11-06 | 2015-06-03 | 中国石油天然气股份有限公司 | Oil well pump |
| CN204458326U (en) * | 2014-12-31 | 2015-07-08 | 中国石油天然气股份有限公司 | A kind of graded ceramic plunger |
| CN104929928A (en) * | 2015-06-01 | 2015-09-23 | 中国科学院力学研究所 | Oil well pump and manufacturing method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106593833A (en) | 2017-04-26 |
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