CN207437014U - Oil production pipe - Google Patents
Oil production pipe Download PDFInfo
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- CN207437014U CN207437014U CN201720828858.6U CN201720828858U CN207437014U CN 207437014 U CN207437014 U CN 207437014U CN 201720828858 U CN201720828858 U CN 201720828858U CN 207437014 U CN207437014 U CN 207437014U
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- oil pipe
- oil
- pipe
- ball seat
- flow string
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Abstract
The utility model provides an oil production pipe, include: the packer comprises a first oil pipe, a double-buckle joint, a second oil pipe, an oil well pump, a bypass pipe, an upper packer, a third oil pipe, a lower packer, a ball seat, a sieve pipe and a plug. The first oil pipe is connected with one end of a second oil pipe through a double-buckle joint, the oil well pump is positioned in the second oil pipe, the other end of the second oil pipe is connected with one end of a third oil pipe through a bypass pipe, and the other end of the third oil pipe is sequentially connected with a ball seat, a sieve pipe and a plug; the upper packer and the lower packer are used for plugging a gap between the third oil pipe and the outer pipe of the oil production well; the oil well pump is used for pumping liquid under the oil production well out of the oil production well through the sieve tube, the ball seat, the third oil pipe, the by-pass pipe, the second oil pipe and the first oil pipe in sequence. The utility model provides an oil production pipe has improved the shutoff ability of tubular column to the gas channeling layer.
Description
Technical field
The utility model is related to oil-gas field development technology more particularly to a kind of flow strings.
Background technology
Carry out fireflood and nitrogen oil displacement test to improve heavy crude reservoir and development of low-permeability oil reservoir effect, Oil Field,
Wherein fireflood technology is mainly used for heavy crude reservoir, and nitrogen technology of reservoir sweep is applied to low-permeability sandstone oil reservoir, implemented in two kinds of technologies
It is required for persistently injecting gas into stratum by injection well in journey.Due to the anisotropism on stratum, early period steam soak or
During waterflooding extraction, generally can there are the predominant pathway of Relative High Permeability, with displacement experiment progressively deeply, gas can be along excellent
Gesture passage is altered to producing well into part direction producing well gas production is caused to be significantly increased, causes following harmful effect：First, it influences
The normal lifting of producing well, largely entering pump gas can not discharge in time, oil well pump efficiency substantially reduces, and even occur when serious
" gas lock ", causes oil well not go out liquid, and for fireflood producing well, gas largely from oil jacket annular space output, causes oil jacket annular space
Mixing light oil is difficult, and mixing light oil thinning effect is deteriorated；It is uniformly imitated second is that influencing well group, gas is led along a large amount of has channelings of a direction
It causes by effect unevenness in plane, gas to producing well during advancing by leaps and bounds, since gas is lighter, it may occur that onlap acts on, from life
The top extraction of well oil reservoir is produced, the upper development degree in longitudinal direction is caused to reduce；Third, increasing operating cost, a large amount of gases are given birth to from small part
Production well is scurried out, and gas is caused inefficient cycle occur, causes the invalid injection of portion gas, adds injection expense, while big
Amount tail gas increases ground vent gas treatment expense after entering gathering system.
In the prior art, for producing well has channeling the problem of, generally take on producing well tripping in machinery envelope alter tubing string or
Take chemical plugging measure, existing machinery envelope alter tubing string exist can not well-flushing mix it is dilute, the problems such as liquid level can not be monitored, due to gas
Percolation ability is strong, and chemical plugging difficulty is larger, and work progress is complicated, and operating expenses is high, it is difficult to which large-scale promotion is implemented, and causes
Tubing string of the prior art blocks has channeling layer not tight.
Utility model content
The utility model provides a kind of flow string, improves shut-off capacity of the tubing string to has channeling layer.
The utility model provides a kind of flow string, including：
First oil pipe, double buckle joints, the second oil pipe, oil well pump, bypass pipe, upper packer, the 3rd oil pipe, lower packet,
Ball seat, screen casing and silk plug；
First oil pipe connects one end of second oil pipe by double buckle joints, and the oil well pump is located at described
In second oil pipe, the other end of second oil pipe connects one end of the 3rd oil pipe by the bypass pipe, and the described 3rd
The other end of oil pipe is sequentially connected the ball seat, the screen casing and the silk plug；
The upper packer and the lower packet are used to block the gap between the 3rd oil pipe and producing well outer tube；
The oil well pump is used to the liquid under producing well passing sequentially through the screen casing, the ball seat, the 3rd oil pipe, the bypass
Pipe, second oil pipe and first oil pipe extraction producing well.
The lower packet described in one embodiment of the utility model includes safety joint and long packing element packer.
The bypass pipe described in one embodiment of the utility model is used to connecting space in the flow string and described the
One oil pipe is outer and the gap space of producing well outer tube.
The upper packer described in one embodiment of the utility model and the lower packet use inconel material.
The upper packer described in one embodiment of the utility model is Y521 type mechanical set packers；
The lower packet is Y341 type mechanical set packers.
The long packing element packer described in one embodiment of the utility model is K341 type long packing element packers.
The oil well pump described in one embodiment of the utility model is suspension type oil well pump.
The ball seat described in one embodiment of the utility model is two-way ball seat.
In one embodiment of the utility model, first oil pipe and double buckle joints, double buckle joints with it is described
Second oil pipe, second oil pipe and the bypass pipe, the bypass pipe and the 3rd oil pipe, the 3rd oil pipe with it is described
Ball seat, the connection mode of the ball seat and silk plug described in the screen casing, the screen casing are screwed connection.
The utility model provides a kind of flow string, including：First oil pipe, double buckle joints, the second oil pipe, oil well pump, side
Siphunculus, upper packer, the 3rd oil pipe, lower packet, ball seat, screen casing and silk plug.Wherein, the first oil pipe is connected by double buckle joints
One end of second oil pipe, oil well pump are located in the second oil pipe, and the other end of the second oil pipe connects the 3rd oil pipe by bypass pipe
One end, the other end of the 3rd oil pipe are sequentially connected ball seat, screen casing and silk plug；Upper packer and lower packet are oily for blocking the 3rd
Gap between pipe and producing well outer tube；Oil well pump is used to the liquid under producing well passing sequentially through screen casing, ball seat, the 3rd oil
Pipe, bypass pipe, the second oil pipe and the first oil pipe extraction producing well.Flow string provided by the utility model, improves tubing string pair
The shut-off capacity of has channeling layer.
Description of the drawings
It 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 only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structure diagram of prior art flow string；
Fig. 2 is the structure diagram of the utility model flow string embodiment one；
Fig. 3 is the structure diagram of the utility model flow string embodiment two.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
Term " first ", " second ", " the 3rd " in the specification and claims of the utility model and above-mentioned attached drawing,
(if present)s such as " the 4 " are the objects for distinguishing similar, without being used to describe specific order or precedence.It should
The data that the understanding so uses can exchange in the appropriate case, so as to the utility model described herein embodiment for example
It can be implemented with the order in addition to those for illustrating or describing herein.In addition, term " comprising " and " having " and he
Any deformation, it is intended that cover it is non-exclusive include, for example, contain the process of series of steps or unit, method,
System, product or equipment are not necessarily limited to those steps or unit clearly listed, but may include what is do not listed clearly
Or for the intrinsic other steps of these processes, method, product or equipment or unit.
The technical solution of the utility model is described in detail with specifically embodiment below.These are specific below
Embodiment can be combined with each other, and may be repeated no more for the same or similar concept or process in some embodiments.
Fig. 1 is the structure diagram of prior art flow string.As shown in Figure 1, in the prior art, in order to oil pipe 111
Gap between producing well outer wall is blocked, and a circle packer 22 is provided in the outside of oil pipe 111, and packer 22 is used for
Gap between oil pipe 111 and producing well outer wall is blocked.Meanwhile the lower section of oil pipe 111 sets oil well pump 33, oil well pump
33 are used to the liquid under producing well being extracted into outside producing well by oil pipe 111.In the prior art due to being only provided with one layer of envelope
Stifled device blocks the gap between oil pipe and producing well, while the gap has no idea to be cleaned, and causes existing skill
Tubing string in art has channeling layer is blocked it is not tight, and exist can not well-flushing mix it is dilute, the problems such as liquid level can not be monitored.
Fig. 2 is the structure diagram of the utility model flow string embodiment one.As shown in Fig. 2, the present embodiment production pipe
Column includes：First oil pipe 1, double buckle joints 2, the second oil pipe 3, oil well pump 4, bypass pipe 5, upper packer 6, the 3rd oil pipe 7, lower envelope
Every device 8, ball seat 9, screen casing 10 and silk plug 11；First oil pipe 1 connects one end of the second oil pipe 3, oil well pump 4 by double buckle joints 2
In the second oil pipe 3, the other end of the second oil pipe 3 connects one end of the 3rd oil pipe 7 by bypass pipe 5, the 3rd oil pipe 7 it is another
One end is sequentially connected ball seat 9, screen casing 10 and silk plug 11；Upper packer 6 and lower packet 8 for the 3rd oil pipe 7 of closure and recover the oil
Gap between well outer tube；Oil well pump 4 is used to the liquid under producing well passing sequentially through screen casing 10, ball seat 9, the 3rd oil pipe 7, side
Siphunculus 5, the second oil pipe 3 and the first oil pipe 1 extraction producing well.
Specifically, the present embodiment flow string primary operational method and principle are：Flow string is connected successively from the bottom to top
It connects in instrument and tubing string and lower going-into-well；Using mechanically or hydraulically base sealed packer.Upper packer and lower packet are setting
After can effective packer top oil reservoir, output gas is avoided largely to scurry out, understratum fluid is flowable by ball-and-seat, oil well pump
To ground, understratum fluid can enter oil sets annular space more than upper packer by ball-and-seat, bypass pipe, and reaction is fuel-displaced
The hydrodynamic face of well and fluid supply capacity, when from oil sets annular space backwash or mixing dilute, fluid passes through bypass pipe downlink, by oil pumping pumping
Go out, due to the presence of packer and ball-and-seat, the thin oil of flushing fluid or incorporation can be avoided to miss in stratum.Wherein silk plug is used for
Mouth under flow string is closed, for screen casing for being filtered to the down-hole liquid of extraction, ball seat is used for the setting flow string of pitching
Hydraulic packer, and can in process of production well-flushing when prevent lost circulation.Specifically, in anti-flushing well, due to ball seat
The fluid pressure of top prevents the liquid above ball seat from entering underground.Flow string provided in this embodiment, can be applied to fire
It drives, non-hydrocarbons gas drive gassed-out well envelope has channeling field is, it can be achieved that has channeling layer position effectively blocks, and production pipe provided in this embodiment
Column can be realized normal well-flushing by bypass pipe, mix dilute and dynamic liquid level monitoring, without influencing the daily production maintenance of oil well, be possessed extensively
Popularizing application prospect.The present embodiment flow string has the following technical effect that：1. gas pay is realized using twin packer tubing string
Effective packing；2. the packing of the special circumstances such as short lap, full well section perforation is realized by optimizing packer combination；3. using one
Body tubing string only needs tripping in one-trip string, easy to operate；4. tubing string possesses the function of preventing incorporation liquid and lost circulation.
Fig. 3 is the structure diagram of the utility model flow string embodiment two.As shown in figure 3, the present embodiment production pipe
For column shown in Fig. 1 on the basis of flow string, lower packet 8 includes safety joint 81 and long packing element packer 82.Due to part oil
The reservoir of well either only exists physical property interlayer or the full well section perforation of oil reservoir every interlayer is relatively thin, in such cases the packer in face without
Set position, therefore, lower packet 8 seal has channeling using long packing element packer 82 so as to fulfill short lap.In addition, long packing element type insulates
Device 82 can also be setting at physical property interlayer.The purpose for designing connector safe to use is when removing seal for packer difficulty causes tubing string can not
When smoothly rising, it can be disengaged at safety joint, avoid the occurrence of card well accident.
Further, in above-mentioned Fig. 2 and embodiment illustrated in fig. 3, bypass pipe be used to connecting space in flow string and
First oil pipe is outer and the gap space of producing well outer tube.Specifically, when which can be used for oil pumping, down-hole liquid passes through bypass
Pipe is into the outer gap space with producing well outer tube of the first oil pipe and is extracted outside well, well-flushing when can be used for cleaning, mix it is dilute
And dynamic liquid level monitoring.
Optionally, in the above-described embodiments, upper packer 6 and lower packet 8 use inconel material.Upper packer
6 be Y521 type mechanical set packers；Lower packet 8 is Y341 type mechanical set packers.
Specifically, upper packer 6 is using the setting packer of machinery, and such as Y521 type packers, lower packet 8 uses hydraulic pressure
Setting packer, such as Y341 packers, two packer packings every space due to the presence of a large amount of gases, can generate higher
Pressure, due to the presence of Y521 packer slips and anchor watt, entire process pipe string will not wriggle upwards, two packer packings every
The pressure in space acts on up and down respectively on two packers, mutually balances each other, therefore ensures at once more stable close
Envelope.Further, since there are corrosive gas such as carbon dioxide, oxygen, hydrogen sulfide under fireflood producing well, therefore packer body material
Matter selects inconel, it is ensured that possesses preferable corrosion resistance properties, corrosion product is avoided to block packer slip, increase the later stage
Difficulty is unsealed, packing element and sealing ring select hydrogenation nitrile rubber, have stronger corrosion-resistant and heat resistance, are suitable for fireflood life
The issuable high-temperature corrosion environment of well is produced, sealing ring nearby increases soft metal baffle ring, increases sealing ring hermetic seal ability, avoids
Leak point is formed at sealing ring.
Optionally, in above-mentioned embodiment illustrated in fig. 2, long packing element packer 82 is K341 type long packing element packers.
Specifically, K341 types long packing element packer, length 2.2m, packing element length 1.5m can insulate the thin folder of more than 0.3m
Layer,
Optionally, in the above-described embodiments, oil well pump 4 is suspension type oil well pump.Ball seat 9 is two-way ball seat.
Specifically, since upper mechanical packer needs ballast setting, oil well pump 4 may be pressed when serious tonnage is excessive
It is curved, cause holddown, therefore oil well pump 4 uses suspension type oil well pump 4 as bimetallic tube, top connection is double buckle joints 2, can be connected simultaneously
4 pump barrel of outer tube and oil well pump is hung, 4 pump barrel of oil well pump is freely hanging in outer tube, is not subject to pressure and pulling force, and can be according to need
Descend tubing string different depth.
Optionally, in the above-described embodiments, the first oil pipe 1 and double buckle joint 2,2 and second oil pipes 3, second of double buckle joints
Oil pipe 3 and bypass pipe 5,5 and the 3rd oil pipe 7 of bypass pipe, the 3rd oil pipe 7 and ball seat 9, ball seat 9 and screen casing 10,10 silk plug 11 of screen casing
Connection mode be screwed connection.In addition, above-mentioned connection mode can also be flanged joint, is bolted or the modes such as be bonded
And combinations thereof, it does not limit herein.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from this practicality newly
The scope of each embodiment technical solution of type.
Claims (9)
1. a kind of flow string, which is characterized in that including：
First oil pipe, double buckle joints, the second oil pipe, oil well pump, bypass pipe, upper packer, the 3rd oil pipe, lower packet, ball seat,
Screen casing and silk plug；
First oil pipe connects one end of second oil pipe by double buckle joints, and the oil well pump is located at described second
In oil pipe, the other end of second oil pipe connects one end of the 3rd oil pipe, the 3rd oil pipe by the bypass pipe
The other end be sequentially connected the ball seat, the screen casing and the silk plug；
The upper packer and the lower packet are used to block the gap between the 3rd oil pipe and producing well outer tube；It is described
Oil well pump be used for by the liquid under producing well pass sequentially through the screen casing, the ball seat, the 3rd oil pipe, the bypass pipe,
Second oil pipe and first oil pipe extraction producing well.
2. flow string according to claim 1, which is characterized in that
The lower packet includes safety joint and long packing element packer.
3. flow string according to claim 1 or 2, which is characterized in that
The bypass pipe is used to connect outside space and first oil pipe in the flow string and the gap of producing well outer tube
Space.
4. flow string according to claim 1, which is characterized in that
The upper packer and the lower packet use inconel material.
5. flow string according to claim 1, which is characterized in that
The upper packer is Y521 type mechanical set packers；
The lower packet is Y341 type mechanical set packers.
6. flow string according to claim 2, which is characterized in that
The long packing element packer is K341 type long packing element packers.
7. flow string according to claim 1, which is characterized in that
The oil well pump is suspension type oil well pump.
8. flow string according to claim 1, which is characterized in that
The ball seat is two-way ball seat.
9. flow string according to claim 1, which is characterized in that
First oil pipe and double buckle joints, double buckle joints and second oil pipe, second oil pipe with it is described
Bypass pipe, the bypass pipe and the 3rd oil pipe, the 3rd oil pipe and the ball seat, the ball seat and the screen casing, institute
The connection mode for stating silk plug described in screen casing is screwed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828858.6U CN207437014U (en) | 2017-07-10 | 2017-07-10 | Oil production pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828858.6U CN207437014U (en) | 2017-07-10 | 2017-07-10 | Oil production pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207437014U true CN207437014U (en) | 2018-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720828858.6U Active CN207437014U (en) | 2017-07-10 | 2017-07-10 | Oil production pipe |
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| Country | Link |
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| CN (1) | CN207437014U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425163A (en) * | 2019-01-09 | 2020-07-17 | 中国石油天然气股份有限公司 | Switch type double-wall packer and injection-production integrated tubular column thereof |
-
2017
- 2017-07-10 CN CN201720828858.6U patent/CN207437014U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425163A (en) * | 2019-01-09 | 2020-07-17 | 中国石油天然气股份有限公司 | Switch type double-wall packer and injection-production integrated tubular column thereof |
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