CN108150145A - Injection well downhole flow regulator - Google Patents
Injection well downhole flow regulator Download PDFInfo
- Publication number
- CN108150145A CN108150145A CN201611111529.6A CN201611111529A CN108150145A CN 108150145 A CN108150145 A CN 108150145A CN 201611111529 A CN201611111529 A CN 201611111529A CN 108150145 A CN108150145 A CN 108150145A
- Authority
- CN
- China
- Prior art keywords
- main body
- injection well
- flow regulator
- downhole flow
- well downhole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 50
- 239000007924 injection Substances 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
- 238000007789 sealing Methods 0.000 claims description 4
- 230000006837 decompression Effects 0.000 abstract description 12
- 230000009977 dual effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000003276 anti-hypertensive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Nozzles (AREA)
Abstract
The present invention provides a kind of injection well downhole flow regulator, including main body, blanking plug and diversion trench.It is offered in main body through the limbers of main body, the upper end of main body offers the mounting hole with limbers separately, and water filling port is offered on the side wall of the separate limbers of mounting hole.Blanking plug is mounted in mounting hole, and blanking plug includes water inlet and the water nozzle being connected with water inlet, and water nozzle is arranged at water filling port.Diversion trench is opened in the inside of main body, and the first end of diversion trench extends to the lower end of main body, and the second end of diversion trench is extended in mounting hole.In use, being passed through high pressure water toward injection well downhole flow regulator, high pressure water reaches the lower face of main body from limbers, and enters diversion trench.Later, high pressure water carries out level-one decompression by diversion trench, carries out two level decompression through water nozzle, finally enters stratum from water filling port.Dual decompression can make water nozzle reduce pressure difference under the conditions of larger area of passage, so as to avoid choke size is too small oil nozzle plug problem is caused to occur.
Description
Technical field
The present invention relates to oilfield exploitation field of mechanical technique, in particular to a kind of injection well downhole flow regulator.
Background technology
In oil extraction process, since the difference of physical property between layers causes interlayer, there are producing pressure differentials.For drop
The considerations of low development cost is mostly using the more set series of strata of a set of well pattern exploitation.Such as by taking oil well as an example, often opened using a bite oil well
Adopt the oil field of different series of strata.However, when pressure difference is larger between series of strata, it just can not be released each layer of production capacity, finally
Influence the whole exploitation effect in oil field.
Existing technology will be separated between layers using multiple packers, and every layer of installation injection well downhole flow regulator passes through
Injection well downhole flow regulator carries out water filling to reduce the pressure difference between series of strata to each layer, and the hydraulic pressure for injecting water is adjusted by the water nozzle in injection well downhole flow regulator
Section.
Since the area of passage size of water nozzle determines its amount of differential pressure that can be reduced, when interlayer pressure difference is larger, need
Using the smaller water nozzle of area of passage, in this way, be easy to cause water nozzle occur blocking and can not water filling.
Invention content
It is a primary object of the present invention to provide a kind of injection well downhole flow regulator, to solve to adjust excessive pressure using water nozzle in the prior art
The problem of water nozzle blocks is easily led to when poor.
To achieve these goals, according to an aspect of the invention, there is provided a kind of injection well downhole flow regulator, including main body, blocks
Device and diversion trench.It is offered in main body through the limbers of main body, the upper end of main body offers the installation with limbers separately
Hole offers water filling port on the side wall of the separate limbers of mounting hole.Blanking plug is mounted in mounting hole, and blanking plug includes water inlet
Mouth and the water nozzle being connected with water inlet, water nozzle are arranged at water filling port, and water nozzle is for reducing hydraulic pressure.Diversion trench is opened in main body
Inside, the first end of diversion trench extends to the lower end of main body, and the second end of diversion trench is extended in mounting hole.
Further, diversion trench is bent setting in main body.
Further, diversion trench is spiral-shaped.
Further, the extending direction of diversion trench along limbers is set in the outside of limbers.
Further, diversion trench is a plurality of, and plurality of guiding gutter is set at intervals.
Further, injection well downhole flow regulator further includes lower contact, and lower contact is connected on the lower end of main body, and the inside of lower contact is formed
Cavity, cavity are connected with limbers and diversion trench.
Further, injection well downhole flow regulator further includes guide way, and the first end of guide way is inclined-plane, the first end of guide way for pair
Fisher is oriented to, and the second end of guide way is connect with upper surface, and the second end of guide way is used to limit blanking plug,
Through-hole is offered in guide way, through-hole is connected with limbers.
Further, injection well downhole flow regulator further includes housing, and housing is set in the outside of guide way, and the first end connection of housing
To the upper end surface of main body.
Further, injection well downhole flow regulator further includes top connection, and top connection and the second end connection of housing, top connection connect with housing
It is logical.
Further, sealing ring is provided between top connection and housing.
It applies the technical scheme of the present invention, in use, in low pressure water injection layer or needing control pressure as needed first
High pressure payzone disposes the injection well downhole flow regulator, is insulated between layers using packer, and blocks the water flowing of lowest level injection well downhole flow regulator
Hole.High pressure water is passed through toward injection well downhole flow regulator, high pressure water reaches the lower face of main body from limbers, and enters diversion trench from lower face, leads to
Cross diversion trench and carry out level-one decompression, the water after level-one is depressured enters mounting hole, into blanking plug water inlet again through water nozzle into
Row two level is depressured, and finally enters stratum from water filling port.By diversion trench and the dual decompression of water nozzle, water nozzle can be made in larger overcurrent
Pressure difference is reduced under the conditions of area, so as to avoid choke size is too small oil nozzle plug problem is caused to occur.
Other than objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to accompanying drawings, the present invention is described in further detail.
Description of the drawings
The Figure of description for forming the part of the present invention is used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 shows the schematic cross-sectional view of the embodiment of injection well downhole flow regulator according to the present invention；And
Fig. 2 shows the schematic cross-sectional views at the A-A of the injection well downhole flow regulator in Fig. 1；
Fig. 3 shows the structure diagram of the diversion trench of the injection well downhole flow regulator in Fig. 1.
Wherein, above-mentioned attached drawing is marked including the following drawings：
10th, main body；11st, limbers；111st, water filling port；12nd, mounting hole；20th, blanking plug；21st, water nozzle；30th, diversion trench；
40th, lower contact；50th, guide way；60th, housing；70th, top connection.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order to which those skilled in the art is made to more fully understand the present invention program, below in conjunction in the embodiment of the present invention
The technical solution in the embodiment of the present invention is clearly and completely described in attached drawing, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work should all belong to the model that the present invention protects
It encloses.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be the object for distinguishing similar, and specific sequence or precedence are described without being used for.It should be appreciated that it uses in this way
Term can be interchanged in the appropriate case, so as to the embodiment of the present invention described herein.In addition, term " comprising " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment are not necessarily limited to those steps or unit clearly listed, but may include without clear
It is listing to Chu or for the intrinsic other steps of these processes, method, product or equipment or unit.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
Unless specifically stated otherwise, the component and positioned opposite, the digital table of step otherwise illustrated in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing
The size divided not is to be drawn according to practical proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part for book.In shown here and discussion all examples, any occurrence should be construed as merely illustrative, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms are represented in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need to that it is further discussed in figure.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made in opposite description to space used herein above.
In the description of the present invention, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " laterally, vertical,
Vertically, orientation or position relationship indicated by level " and " top, bottom " etc. are normally based on orientation or position shown in the drawings and close
System is for only for ease of the description present invention and simplifies description, and in the case where not making to illustrate on the contrary, these nouns of locality do not indicate that
There must be specific orientation with the device or element for implying meaning or with specific azimuth configuration and operation, therefore cannot manage
It solves as limiting the scope of the invention；The noun of locality " inside and outside " refers to relative to inside and outside each component profile in itself.
Fig. 1 shows the embodiment of the injection well downhole flow regulator of the present invention, which includes main body 10, blanking plug 20 and diversion trench
30.Wherein, it is offered in main body 10 through the limbers of main body 10 11, the upper end of main body 10 is offered with limbers 11 separately
Mounting hole 12.Water filling port 111 is offered on the side wall of the separate limbers 11 of mounting hole 12.Blanking plug 20 is mounted on the peace
It filling in hole 12, blanking plug 20 includes water inlet and the water nozzle 21 being connected with water inlet, and water nozzle 21 is arranged at water filling port 111,
For reducing hydraulic pressure.Diversion trench 30 is opened in the inside of main body 10, as shown in Fig. 2, the first end of diversion trench 30 extends to main body
10 lower end, the second end of diversion trench 30 are extended in mounting hole 12.
In use, in low pressure water injection layer or the high pressure payzone of control pressure is needed to dispose the injection well downhole flow regulator as needed first,
It is insulated between layers using packer.High pressure water is passed through toward injection well downhole flow regulator, high pressure water reaches main body 10 from limbers 11
Lower face, and enter diversion trench 30 from lower face, diversion trench 30 can be to carrying out level-one decompression by high pressure water therein.Through level-one
Water after decompression enters mounting hole 12, then flows into blanking plug 20 and carries out two level decompression by water nozzle 21, finally from water filling port 111 into
Enter stratum.In this way, by the 21 dual decompression of diversion trench 30 and water nozzle, can make water nozzle 21 under conditions of larger area of passage into
One step reduces pressure difference, so as to avoid needing when being depressured merely with water nozzle 21 in the past that the size setting of water nozzle 21 is too small
And the problem of water nozzle 21 is caused easily to block.
Optionally, above-mentioned mounting hole 12 is blind hole, through-hole centered on above-mentioned limbers 11.
Optionally, 30 complications of diversion trench are arranged on bending setting in main body 10, and being bent the diversion trench 30 of setting can extend
Flow is towards mounting hole 12 along Cheng Changdu, so as to play antihypertensive effect.Optionally, 30 area of passage size of diversion trench and its
It can be adjusted along Cheng Changdu according to actually required choke pressure drop.
As shown in figure 3, in the present embodiment, diversion trench 30 is spiral-shaped diversion trench.Using it is spiral-shaped can be into
One step extends flow towards mounting hole 12 along Cheng Changdu, reduces the pressure difference of bigger.Optionally, diversion trench 30 can be by rectangular overcurrent
Hole is formed along helix sweeping, area of passage size S, the screw pitch L1 of diversion trench 30 and along Cheng Changdu L2, can be according to actually required
Choke pressure drop is adjusted.
In the present embodiment, optionally, the extending direction of diversion trench 30 along limbers 11 is set in the outside of limbers 11.
Diversion trench 30 carries out spiral surrounding with limbers 11 for axis, can make full use of the structure of main body 10, and extend as far as possible water
It circulates toward mounting hole 12 along Cheng Changdu, so as to be used for reducing hydraulic pressure to a greater degree.Optionally, exist according to actual needs
The inside of injection well downhole flow regulator processes different screw pitch, different area of passages or the different spiral shape diversion trenches along Cheng Changdu, to be dropped
The injection well downhole flow regulator of low difference pressure difference, when dispensing water, further according to it is required reduce pressure difference number select different injection well downhole flow regulators.
Optionally, diversion trench 30 is a plurality of, and plurality of guiding gutter 30 is set at intervals.Plurality of guiding gutter 30 can be further
Reduce flow pressure difference.Optionally, the item number of diversion trench 30 can be adjusted according to actually required choke pressure drop, can also be by blocking
The method of diversion trench reduces the diversion trench quantity for decompression.
As shown in Figure 1, in the present embodiment, injection well downhole flow regulator further includes lower contact 40, lower contact 40 is connected under main body 10
On end, the inside of lower contact 40 forms cavity, and cavity is connected with limbers 11 and diversion trench 30.High pressure water is passed through toward limbers 11
Afterwards, since the lower contact position of undermost injection well downhole flow regulator is blocked, so, after high pressure water rises to lower contact 40, connect into cavity
In logical ground diversion trench 30, level-one decompression is carried out.
As shown in Figure 1, in the present embodiment, injection well downhole flow regulator further includes guide way 50, and the first end of guide way 50 is inclined-plane, is led
It is used to be oriented to fisher to the first end of body 50.The second end of guide way 50 is connect with upper surface, and the of guide way 50
Two ends are used to limit blanking plug 20.Through-hole is offered in guide way 50, through-hole is connected with the limbers 11 of main body 10.Such as
Shown in Fig. 1, erecting bed is provided in the second end face of guide way 50, threaded hole is offered on erecting bed, guide way 50 passes through spiral shell
Nail is fastened on the upper surface of main body 10.When needing to check or replacing blanking plug 20, oil pipe decentralization can be utilized to salvage
Fisher is directed at the fishing head of blanking plug by device, the angled end-face of guide way 50, you can blanking plug 20 is salvaged.
As shown in Figure 1, in the present embodiment, injection well downhole flow regulator further includes housing 60, housing 60 is set in the outside of guide way 50,
And the first end of housing 60 is connected in the upper end surface of main body 10.The collective effect of housing 60 and guide way 50, to blocking
Device 20 is limited, it is ensured that blanking plug 20 is without departing from going out mounting hole 12.The first end of housing 60 is set in the circumferential direction of main body 10
On lateral wall, and using being threadedly coupled, threaded connection place is provided with sealing ring.
Optionally, injection well downhole flow regulator further includes top connection 70, and top connection 70 is connect with the second end of housing 60, top connection 70 with it is outer
60 connection of set.Optionally, top connection 70 can also be used with the second end of housing 60 and be threadedly coupled, other side of link can also be used
Formula, such as interference fit connection.
Optionally, it is provided with sealing ring between top connection 70 and housing 60.Optionally, it can all be set in other junctions close
Seal ensures the leakproofness of injection well downhole flow regulator, for use in water filling.
It should be noted that the injection well downhole flow regulator of the present invention is particularly suitable for the dispensing of oil field High Pressure Difference well/adopt.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
Original decompression mode uses 1 water nozzle complete independently, and injection well downhole flow regulator of the invention is saved jointly by diversion trench with water nozzle
Stream reduces the pressure of high pressure water, passes through spiral stream guidance slot fixed restriction and the combination throttle style of water nozzle variable restrictor so that
Under the conditions of identical chock pressure difference, water nozzle overcurrent size can be increased significantly, previous because being dropped merely with water nozzle so as to avoid
Pressure, and need the setting of the size of water nozzle is too small and the problem of water nozzle is caused easily to block.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of injection well downhole flow regulator, which is characterized in that including：
Main body (10) is offered through the limbers of the main body (10) (11) in the main body (10), the main body (10)
Upper end offers the mounting hole (12) with the limbers (11) separately, the separate limbers of the mounting hole (12)
(11) water filling port (111) is offered on side wall；
Blanking plug (20), the blanking plug (20) is in the mounting hole (12), and the blanking plug (20) is including water inlet
The water nozzle (21) being connected with the water inlet, the water nozzle (21) are arranged at the water filling port (111), the water nozzle
(21) for reducing hydraulic pressure；
Diversion trench (30), is opened in the inside of the main body (10), and the first end of the diversion trench (30) extends to the main body
(10) lower end, the second end of the diversion trench (30) are extended in the mounting hole (12).
2. injection well downhole flow regulator according to claim 1, which is characterized in that the diversion trench (30) is bent in the main body (10)
Setting.
3. injection well downhole flow regulator according to claim 2, which is characterized in that the diversion trench (30) is spiral-shaped.
4. injection well downhole flow regulator according to claim 3, which is characterized in that diversion trench (30) the prolonging along the limbers (11)
Stretch the outside that direction is set in the limbers (11).
5. injection well downhole flow regulator according to claim 1, which is characterized in that the diversion trench (30) is a plurality of, a plurality of water conservancy diversion
Slot (30) is set at intervals.
6. injection well downhole flow regulator according to claim 1, which is characterized in that the injection well downhole flow regulator further includes lower contact (40), under described
Connector (40) is connected on the lower end of the main body (10), and the inside of the lower contact (40) forms cavity, the cavity and institute
Limbers (11) is stated to connect with the diversion trench (30).
7. injection well downhole flow regulator according to claim 1, which is characterized in that the injection well downhole flow regulator further includes guide way (50), described to lead
It is inclined-plane to the first end of body (50), the first end of the guide way (50) is for being oriented to fisher, the guide way
(50) second end is connect with the upper end of the main body (10), and the second end of the guide way (50) is used for the blanking plug
(20) it is limited, offers through-hole in the guide way (50), the through-hole is connected with the limbers (11).
8. injection well downhole flow regulator according to claim 7, which is characterized in that the injection well downhole flow regulator further includes housing (60), the housing
(60) outside of the guide way (50) is set in, and the first end of the housing (60) is connected to the upper of the main body (10)
Endface.
9. injection well downhole flow regulator according to claim 8, which is characterized in that the injection well downhole flow regulator further includes top connection (70), it is described on
Connector (70) is connect with the second end of the housing (60), and the top connection (70) connects with the housing (60).
10. injection well downhole flow regulator according to claim 9, which is characterized in that between the top connection (70) and the housing (60)
It is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111529.6A CN108150145A (en) | 2016-12-06 | 2016-12-06 | Injection well downhole flow regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111529.6A CN108150145A (en) | 2016-12-06 | 2016-12-06 | Injection well downhole flow regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108150145A true CN108150145A (en) | 2018-06-12 |
Family
ID=62468591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611111529.6A Pending CN108150145A (en) | 2016-12-06 | 2016-12-06 | Injection well downhole flow regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108150145A (en) |
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| CN109723413A (en) * | 2018-12-21 | 2019-05-07 | 大庆市晟威机械制造有限公司 | Injection well downhole flow regulator |
| CN111119811A (en) * | 2019-12-25 | 2020-05-08 | 中国石油天然气股份有限公司 | Dual-medium dispenser, dispensing string, and method for operating dispensing string |
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|---|---|---|---|---|
| CN109723413A (en) * | 2018-12-21 | 2019-05-07 | 大庆市晟威机械制造有限公司 | Injection well downhole flow regulator |
| CN109723413B (en) * | 2018-12-21 | 2019-08-09 | 大庆市晟威机械制造有限公司 | Injection well downhole flow regulator |
| CN111119811A (en) * | 2019-12-25 | 2020-05-08 | 中国石油天然气股份有限公司 | Dual-medium dispenser, dispensing string, and method for operating dispensing string |
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