CN209195358U - paraffin removal system - Google Patents
paraffin removal system Download PDFInfo
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- CN209195358U CN209195358U CN201821513380.9U CN201821513380U CN209195358U CN 209195358 U CN209195358 U CN 209195358U CN 201821513380 U CN201821513380 U CN 201821513380U CN 209195358 U CN209195358 U CN 209195358U
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- gas injection
- removal system
- wax removal
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- 239000012188 paraffin wax Substances 0.000 title abstract description 32
- 238000002347 injection Methods 0.000 claims abstract description 84
- 239000007924 injection Substances 0.000 claims abstract description 84
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 239000003129 oil well Substances 0.000 claims abstract description 30
- 239000007789 gas Substances 0.000 claims description 210
- 239000007788 liquid Substances 0.000 claims description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 14
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 239000003345 natural gas Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 136
- 239000001993 wax Substances 0.000 description 64
- 238000004519 manufacturing process Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 239000012530 fluid Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 239000010779 crude oil Substances 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
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- 230000009471 action Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
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- 238000000605 extraction Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
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- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
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- 238000004220 aggregation Methods 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
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- 238000005842 biochemical reaction Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
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- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
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Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The utility model provides a paraffin removal system, include: an oil pipe, a sleeve, a gas lift valve and a gas injection device; the sleeve is sleeved outside the oil pipe, the sleeve is fixed on an oil well head through a sleeve head, a gas injection port is arranged on the sleeve head, and the gas injection port is connected with the gas injection device and used for injecting gas lift gas from the gas injection device into an oil sleeve annulus between the oil pipe and the sleeve; the gas injection device comprises a gas making device and a heating device, the gas making device is connected with the heating device, the gas making device is used for providing gas lift gas, and the heating device is used for heating the gas lift gas; the gas lift valve is arranged on the oil pipe and used for communicating the oil pipe with the oil sleeve annulus. The utility model provides a paraffin removal system to solve the problem that the incident takes place easily in mechanical paraffin removal, realize safe, high-efficient paraffin removal.
Description
Technical field
The utility model relates to technical field of petroleum extraction more particularly to a kind of wax removal systems.
Background technique
During oil extraction, with the continuous decline of temperature, pressure, the deposit being dissolved in crude oil will be with knot
Crystal precipitation, grow up aggregation and deposition, form wax deposition phenomenon.After oil well paraffinication, oil discharge passage internal diameter is gradually reduced, and is increased to oil stream
Add resistance, reduce oil well productivity, some even blocks oil flow channel, and oil well is caused to stop production.Therefore, paraffin removal from oil well very must
It wants.
Paraffin removal from oil well is the process for disposing the wax being adhered on the tools such as oil well tube wall or oil well pump, existing
In technology, common paraffin removal from oil well method mainly includes mechanical paraffin removal, uses special wax removal system such as paraffin cutting cylinder, wax removal piece
Deng the wax being attached in well wellbore is wiped off.
But due to the unstability of oil/gas well, the complexity such as brill, bit freezing, fish are pushed up during mechanical paraffin removal frequent occurrence
Safety accident, security performance is low.
Utility model content
The utility model provides a kind of wax removal system, to solve the problems, such as that mechanical paraffin removal is easy to happen safety accident, realizes
Safe and efficient wax removal.
The utility model provides a kind of wax removal system, comprising: oil pipe, casing, gas lift valve and gas injection device;
Described sleeve pipe is set on the outside of the oil pipe, and described sleeve pipe is fixed on oil well mouth, described sleeve pipe head by casing head
On be provided with gas injection port, the gas injection port is connect with the gas injection device, for that will infuse from the working gas of the gas injection device
Enter into the oil jacket annulus between the oil pipe and described sleeve pipe;
The gas injection device includes gas making device and heating device, and the gas making device is connect with the heating device, institute
Gas making device is stated for providing working gas, the heating device is for heating the working gas;
The gas lift valve is arranged on the oil pipe, for being connected to the oil pipe and the oil jacket annulus.
Wax removal system provided by the utility model, by setting gas injection device and gas lift valve, so that working gas heats tubing string,
Temperature in wellbore is improved, so that the paraffin of crystallization re-dissolves into oil gas, to achieve the purpose that wax removal;Meanwhile working gas can
Fluid in lifting oil pipe helps oil/gas well self-spray production, improves the development effectiveness of oil/gas well, improves recovery ratio.
Further, the gas injection device further include: supercharging device;
The supercharging device is connect with the heating device, for being pressurized to the working gas after heating.
Further, the gas injection device further include: movable and skid-mounted pedestal;
The gas making device, the heating device and the supercharging device are all arranged on the movable and skid-mounted pedestal.
Further, the quantity of the gas lift valve is multiple.
Further, the working gas includes nitrogen or natural gas.
Further, the wax removal system further include: packer;
The lower section of the gas lift valve is arranged in the packer, for insulating the oil jacket annulus.
Further, the wax removal system further include: check valve;
The end of the oil pipe is arranged in the check valve, for preventing oil liquid from flowing back.
Further, the wax removal system further include: gas injection pipeline;
The gas injection port is connect with the gas injection device by the gas injection pipeline.
Further, the gas injection valve of regulating flow quantity is provided on the gas injection pipeline.
Further, the wax removal system further include: gs-oil separator;
The gs-oil separator is connect with the oil pipe, and the oil for separating the oil pipe output is gentle.
Wax removal system provided by the utility model, by setting gas injection device and gas lift valve, so that working gas heats tubing string,
Temperature in wellbore is improved, so that the paraffin of crystallization re-dissolves into oil gas, to achieve the purpose that wax removal;Meanwhile working gas can
Fluid in lifting oil pipe helps oil/gas well self-spray production, improves the development effectiveness of oil/gas well, improves recovery ratio.Further, it infuses
Device of air is set as the movable skid-mounted device of modularization, facilitates the movement of gas injection device, to be suitable for the gaslift of different oil/gas wells
Wax removal.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of wax removal system provided by the embodiment of the utility model;
Fig. 2 is the another structural schematic diagram of wax removal system provided by the embodiment of the utility model;
Fig. 3 is the structural schematic diagram of gas injection device provided by the embodiment of the utility model;
Fig. 4 is the structural schematic diagram for the wax removal system that another embodiment of the utility model provides;
Fig. 5 is the structural schematic diagram for the wax removal system that the utility model another embodiment provides;
Fig. 6 is the schematic diagram of the fluid flow direction of wax removal system provided by the embodiment of the utility model.
Appended drawing reference:
100- oil pipe
11- check valve
200- casing
21- casing head
211- gas injection port
300- gas lift valve
400- gas injection device
41- gas making device
42- heating device
43- supercharging device
The movable and skid-mounted pedestal of 44-
500- oil jacket annulus
51- packer
600- gas injection pipeline
61- gas injection valve
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction in the utility model
The technical solution in the utility model is clearly and completely described in attached drawing, it is clear that described embodiment is that this is practical
Novel a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, belongs to the model of the utility model protection
It encloses.
It is to be appreciated that petroleum is mainly the mixture being made of the hydrocarbon of various components, various components
The phase of hydrocarbon changes with the variation of mining conditions, and solid matter therein is mainly that carbon atoms number is
The alkane of 16-64, this substance are known as paraffin.Paraffin refined wax is the slightly transparent crystalline solid of white.
Oil well is in process of production, former when reaching certain condition with temperature, the precipitation of the reduction of pressure and gas
The paraffin dissolved in oil is just crystallized, is precipitated.With being further change in for condition, paraffin is constantly precipitated, and crystalline solid is just assembled
Be deposited in the equipment and tool such as oil pipe, casing, sucker rod and oil well pump, this phenomenon is exactly wax deposition.Oil well paraffinication is not
White crystal, but the mixture of the impurity such as the paraffin of the semisolid of black and solid state, pitch, colloid, silt.Oil well knot
After wax, oil discharge passage internal diameter is gradually reduced, and is increased resistance to oil stream, is reduced oil well productivity, some even blocks up oil flow channel
Extremely, oil well is caused to stop production.
The factor for influencing oil well paraffinication mainly has the content of resin and asphalt in the component and temperature, crude oil of petroleum, pressure
The degree of roughness and table of power and water and mechanical admixture, the speed of oil liquid flowing and well wellbore surface in solution gas, crude oil
Surface properties etc..By increasing oil stream speed, oil well knot can be effectively prevented in tubing internal coating and using modes such as wax-proofing agents
Wax.The function and effect of oil well paraffin prevention are limited, and therefore, it is necessary to use paraffin removal from oil well.
Paraffin removal from oil well is the process for disposing the wax being adhered on the tools such as oil well tube wall or oil well pump, is commonly used
Paraffin removal from oil well method mainly include mechanical paraffin removal, heating power wax removal, chemical agent wax removal, microorganism wax removal etc..Wherein, mechanical clear
Wax is exactly to be wiped off the wax being attached in well wellbore with special wax removal system, this is a kind of simple and intuitive wax removal side
Method is widely applied in flowing well and pumpingh well.But it due to the unstability of oil/gas well, is often sent out during mechanical paraffin removal
Complicated safety accident, the security performances such as raw top brill, bit freezing, fish are low.
Heating power wax removal is the temperature that oil pipe and liquid stream are improved using thermal energy, when temperature is more than the fusing point of wax, can be played clear
Wax effect.In the prior art, heating power wax removal is typically chosen the carriers such as hot oil, hot water, carries out hot-washing wax remover.The utility model is implemented
In example, then selects gas as carrier, wax removal is realized by gaslift.
Wherein, gas-lift production method refers to artificially high pressure gas injection well bottom, continues the oil flow production of oil well, so that
The oil production method on crude oil ejection ground.Gas-lift production generally includes continuous gas lift and intermittent gaslift: continuous gas lift is referred to from oil
High pressure gas is continuously injected into well in set annular space (or oil pipe), makes the liquid aerating in oil pipe (or oil jacket annulus) to reduce it
A kind of artificial lift mode of liquid in well is discharged to reduce flowing bottomhole pressure (FBHP) in density;Intermittent gaslift is referred to oil jacket annulus
High pressure gas is periodically injected, gas, which quickly enters, forms vent plug in oil pipe, be pushed into ground for the hydrops during stopping note in well
A kind of artificial lift mode in face, the oil well suitable for low-voltage and low-yield energy.
The high pressure gas of injection has two aspect effects in the wellbore, is on the one hand castering action, by from ground injection well
Interior high pressure gas and the mixing of oil reservoir produced fluid in the wellbore, drops the mixed liquor density in pit shaft using the expansion of gas
It is low, the crude oil being flowed into well is given rise into ground, is on the other hand viscosity reduction effect, makees by the mixed dissolution of gas and viscous crude
With reducing viscosity of thickened oil, increase the mobility of viscous crude and reduce the friction loss of viscous crude and pit shaft.
Below with reference to the accompanying drawings and in conjunction with specific embodiments the utility model is described.
Fig. 1 is the structural schematic diagram of wax removal system provided by the embodiment of the utility model, and Fig. 2 is the utility model embodiment
A kind of another structural schematic diagram of the wax removal system of offer, refering to what is shown in Fig. 1, the utility model provides wax removal system, comprising: oil
Pipe 100, casing 200, gas lift valve 300 and gas injection device 400;Casing 200 is set in 100 outside of oil pipe, and casing 200 passes through casing
First 21 are fixed on oil well mouth, and gas injection port 211 is provided on casing head 21, and gas injection port 211 is connect with gas injection device 400, and being used for will
Working gas from gas injection device 400 is injected into the oil jacket annulus 500 between oil pipe 100 and casing 200;Gas injection device 400
Including gas making device 41 and heating device 42, gas making device 41 is connect with heating device 42, and gas making device 41 is for providing gaslift
Gas, heating device 42 is for heating working gas;Gas lift valve 300 is arranged on oil pipe 100, for being connected to oil pipe 100 and oil jacket ring
Sky 500.
Specifically, the working gas from gas injection device 400 is injected into oil jacket annulus 500 by gas injection port 211, using
Gas lift valve 300 enters in oil pipe 100, since working gas have passed through the heating of heating device 42, has certain temperature, enters
After in oil jacket annulus 500 and oil pipe 100, oil pipe 100 can be effectively heated, and then improve the temperature in pit shaft, make the paraffin of crystallization
It re-dissolves into oil gas, achievees the purpose that wax removal.And the castering action that has of working gas itself and viscosity reduction effect, it can be improved
Oil gas capacity of well.
It should be noted that casing head 21 is the important equipment controlled in drilling process well head pressure, casing head
Wing passage is typically provided on 21 ontologies.Gas injection port 211 is essentially the wing passage mouth on casing head ontology, is typically distributed across set
The left and right sides of tube head ontology.The diameter of gas injection port 211 different, gas injection port according to the specification difference of 21 ontology of casing head
211 are connect by pipeline with gas injection device 400.Working gas in gas injection device 400 enters by gas injection port 211, casing head 21
Oil jacket annulus 500 enters back into oil pipe 100, plays wax removal effect.
When the pressure in oil jacket annulus 500 be greater than oil pipe 100 inside pressure when, gas lift valve 300 inlet channel opening,
High pressure gas high speed enters inside oil pipe 100, plays the role of castering action and viscosity reduction.The specific type of gas lift valve 300 is herein not
It is limited, the common pressure control valve and vapor-filled bellows gas lift valve etc. of covering can realize the function of above-mentioned gas lift valve 300.
Further, the quantity of gas lift valve 300 can be one or more, the depth and oil jacket of quantity and oil pipe 100
The conditions such as the pressure inside annular space 500 are related, multiple gas lift valves 300 are arranged are more advantageous to working gas and quickly and evenly enter oil pipe
Inside 100, to play better viscosity reduction and lifting effect.
Gas injection device 400 is arranged on the ground, for providing satisfactory working gas for gaslift wax removal.Gas injection device
400 include gas making device 41 and heating device 42, and the effect of gas making device 41 is to provide gaslift gas source, separates using oil/gas well
Natural gas afterwards is as gas source, or using inert gases such as nitrogen as gas source.Due to gaslift wax removal need to expend it is more
Gas, therefore gas making device 41 can be the devices such as large-scale air accumulator or the gas injection connecting with gas distribution room pump.Heating device 42
Concrete form it is unlimited, can be using the modes such as electric heating, gas heating.Heating device 42 should be tight to the heating temperature of working gas
Lattice control, avoids the excessively high destruction tubing string of working gas temperature and other components.
After working gas enters oil jacket annulus 500, the oil liquid liquid level in oil jacket annulus 500 can be forced down, and then pass through gaslift
Valve 300 enters in oil pipe 100, thus it is possible to vary temperature in wellbore is improved, so that paraffin be made to re-dissolve into oil gas in temperature field in pit shaft
In, reach wax removal purpose.
Working gas includes nitrogen or natural gas.The working gas for injecting oil jacket annulus 500 can be natural gas, and natural gas is to adopt
Product during oil can guarantee gas source abundance in oil well production process, while the dissolution viscosity reducing effect of natural gas is preferable.
The working gas for injecting oil jacket annulus 500 may be inert gas, such as nitrogen, and inert gas is not easy to send out with the substance in viscous crude
Biochemical reaction, operation process security performance are high.
Working gas, the paraffin of dissolution, viscous crude, thin oil mixture after oil pipe 100 is lifted to ground, by oil pipe
100 go production procedure with the production tree that 21 top of casing head is arranged in.The tool of separating treatment and production procedure as mixture
Body technology does not specifically describe in this embodiment.
Wax removal system provided by the embodiment of the utility model, by setting gas injection device and gas lift valve, so that working gas adds
Heat pipe column improves temperature in wellbore, so that the paraffin of crystallization re-dissolves into oil gas, to achieve the purpose that wax removal;Meanwhile gas
Lift gas can fluid in lifting oil pipe, help oil/gas well self-spray production, improve the development effectiveness of oil/gas well, improve recovery ratio.
More detailed embodiment is used below, and the structure of each component is described in detail.
Fig. 3 is the structural schematic diagram of gas injection device provided by the embodiment of the utility model, with reference to shown in Fig. 1-Fig. 3, gas injection
Device 400 further include: supercharging device 43;Supercharging device 43 is connect with heating device 42, for carrying out to the working gas after heating
Pressurization.Working gas after increasing pressure, can force down the liquid level in oil jacket annulus 500 into oil jacket annulus 500, thus comparatively fast
Ground is entered in oil pipe 100 by gas lift valve 300, and high pressure gas is stronger to the lifting effect of the fluid in oil pipe 100, can be effective
Improve oil well production efficiency.
Further, gas injection device 400 further include: movable and skid-mounted pedestal 44;Gas making device 41, heating device 42 and pressurization
Device 43 is all arranged on movable and skid-mounted pedestal 44.By the way that gas making device 41, heating device 42 and supercharging device 43 are mounted on
On movable and skid-mounted pedestal 44, it can be achieved that the modularization of gas injection device 400, can skid, facilitate the movement of gas injection device 400, with
Gaslift wax removal suitable for different oil/gas wells.
Fig. 4 is the structural schematic diagram for the wax removal system that another embodiment of the utility model provides, refering to what is shown in Fig. 4, this reality
Apply the wax removal system provided in example further include: packer 51;The lower section of gas lift valve 300 is arranged in packer 51, for insulating oil
Cover annular space 500.
Wherein, herein with no restrictions, packer 51, will be oily for insulating oil jacket annulus 500 for the specific type of packer 51
The packing of two parts up and down of set annular space 500 is opened.After packer 51 has insulated oil jacket annulus 500, the gas that is injected by gas injection port 211
Lift gas, into oil jacket annulus 500 after cannot cannot enter oil from the end of oil pipe 100 by the position where packer 51
Pipe 100, but entered inside oil pipe 100 by gas lift valve 300.Oil liquid enters oil pipe 100 by the end of oil pipe 100, then with
It is mixed by the working gas that gas lift valve 300 enters oil pipe 100, working gas may make oil viscosity to reduce, and improve lifting efficiency, real
Now keep the safety in production.
On the basis of the above embodiments, wax removal system provided in this embodiment further include: check valve 11;Check valve 11 is set
It sets in the end of oil pipe 100, for preventing oil liquid from flowing back.100 end of oil pipe is provided with check valve 11, and oil liquid passes through check valve 11
Into oil pipe 100.Check valve 11 can be only to avoid the refluence of oil-producing, flow direction oil liquid from shaft bottom by check valve 11 into
Enter inside oil pipe 100, the thin oil and mixing liquid inside oil pipe 100 cannot be flowed out by check valve 11.
Fig. 5 is the structural schematic diagram for the wax removal system that the utility model another embodiment provides, refering to what is shown in Fig. 5, wax removal
System further include: gas injection pipeline 600;Gas injection port 211 is connect with gas injection device 400 by gas injection pipeline 600.
The gas injection valve 61 of regulating flow quantity is provided on gas injection pipeline 600, gas injection valve 61 is for controlling injection oil jacket
The flow of the working gas of annular space 500.Gas injection valve 61 is adjusted according to operating condition is corresponding, easily to change the gas flow of injection.
Fig. 6 is the schematic diagram of the fluid flow direction of wax removal system provided by the embodiment of the utility model, with reference to Fig. 6 institute
Show, the working gas from gas making device 41 is by after heating device 42, supercharging device 43 are heated, are pressurized, by note
The conveying of gas pipeline 600 and gas injection valve 61, then be injected into oil jacket annulus 500 by gas injection port 211;Working gas enters oil jacket
After annular space 500, the oil liquid liquid level in oil jacket annulus 500 can be forced down, and then enter in oil pipe 100 by gas lift valve 300, changed
Temperature field in pit shaft improves temperature in wellbore so that paraffin be made to re-dissolve into oil gas and reaches wax removal purpose.
On the basis of above-mentioned utility model embodiment, the present embodiment proposes the total wax removal system in Europe further include: Oil-gas Separation
Device (not shown);Gs-oil separator is connect with oil pipe 100, and the oil for separating the output of oil pipe 100 is gentle.It is working gas, molten
The paraffin of solution, viscous crude, thin oil mixture after oil pipe 100 is lifted to ground, by oil pipe 100 and be arranged in casing head
The production tree on 21 tops goes production procedure, and the separation of mixture is realized using devices such as gs-oil separators.
Wax removal system provided by the embodiment of the utility model, by setting gas injection device and gas lift valve, so that working gas adds
Heat pipe column improves temperature in wellbore, so that the paraffin of crystallization re-dissolves into oil gas, to achieve the purpose that wax removal;Meanwhile gas
Lift gas can fluid in lifting oil pipe, help oil/gas well self-spray production, improve the development effectiveness of oil/gas well, improve recovery ratio.Into one
Step ground, gas injection device are set as the movable skid-mounted device of modularization, facilitate the movement of gas injection device, to be suitable for different oil/gas wells
Gaslift wax removal.
In the description of the present invention, it should be understood that used term " center ", " length ", " width ",
" thickness ", " top ", " bottom end ", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outside" " axis
To ", the indicating positions such as " circumferential direction " or positional relationship be to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of describing
The utility model and simplified description, rather than the position of indication or suggestion meaning or original part must have a particular orientation, with spy
Fixed construction and operation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is at least two, example
Such as two, three, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. shall be understood in a broad sense, such as may be a fixed connection, may be a detachable connection, or be integrally formed;It can be machinery
Connection is also possible to be electrically connected or can communicate with each other;It can be directly connected, the indirect phase of intermediary can also be passed through
Even, the connection inside two elements or the interaction relationship of two elements can be made.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to
Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above "
One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special
Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only
Indicate that first feature horizontal height is less than second feature.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System;Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced;And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of wax removal system characterized by comprising oil pipe, casing, gas lift valve and gas injection device;
Described sleeve pipe is set on the outside of the oil pipe, and described sleeve pipe is fixed on oil well mouth by casing head, sets on described sleeve pipe head
It is equipped with gas injection port, the gas injection port is connect with the gas injection device, for the working gas from the gas injection device to be injected into
In oil jacket annulus between the oil pipe and described sleeve pipe;
The gas injection device includes gas making device and heating device, and the gas making device is connect with the heating device, the system
Device of air is for providing working gas, and the heating device is for heating the working gas;
The gas lift valve is arranged on the oil pipe, for being connected to the oil pipe and the oil jacket annulus.
2. wax removal system according to claim 1, which is characterized in that the gas injection device further include: supercharging device;
The supercharging device is connect with the heating device, for being pressurized to the working gas after heating.
3. wax removal system according to claim 2, which is characterized in that the gas injection device further include: movable and skid-mounted pedestal;
The gas making device, the heating device and the supercharging device are all arranged on the movable and skid-mounted pedestal.
4. wax removal system according to claim 1-3, which is characterized in that the quantity of the gas lift valve is multiple.
5. wax removal system according to claim 4, which is characterized in that the working gas includes nitrogen or natural gas.
6. wax removal system according to claim 1-3, which is characterized in that further include: packer;
The lower section of the gas lift valve is arranged in the packer, for insulating the oil jacket annulus.
7. wax removal system according to claim 6, which is characterized in that further include: check valve;
The end of the oil pipe is arranged in the check valve, for preventing oil liquid from flowing back.
8. wax removal system according to claim 1-3, which is characterized in that further include: gas injection pipeline;
The gas injection port is connect with the gas injection device by the gas injection pipeline.
9. wax removal system according to claim 8, which is characterized in that be provided with regulating flow quantity on the gas injection pipeline
Gas injection valve.
10. wax removal system according to claim 9, which is characterized in that further include: gs-oil separator;
The gs-oil separator is connect with the oil pipe, and the oil for separating the oil pipe output is gentle.
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CN201821513380.9U CN209195358U (en) | 2018-09-17 | 2018-09-17 | paraffin removal system |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113588239A (en) * | 2021-08-05 | 2021-11-02 | 中国石油天然气股份有限公司 | Performance test system for underground throttler |
CN114000851A (en) * | 2021-12-30 | 2022-02-01 | 山东泉益环保科技有限公司 | Pollution-free high-temperature nitrogen cleaning operation device for pumping well |
-
2018
- 2018-09-17 CN CN201821513380.9U patent/CN209195358U/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113588239A (en) * | 2021-08-05 | 2021-11-02 | 中国石油天然气股份有限公司 | Performance test system for underground throttler |
CN114000851A (en) * | 2021-12-30 | 2022-02-01 | 山东泉益环保科技有限公司 | Pollution-free high-temperature nitrogen cleaning operation device for pumping well |
CN114000851B (en) * | 2021-12-30 | 2022-04-08 | 山东泉益环保科技有限公司 | Pollution-free high-temperature nitrogen cleaning operation device for pumping well |
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