CN206668236U - The positioning acidizing device of stratified injection well - Google Patents
The positioning acidizing device of stratified injection well Download PDFInfo
- Publication number
- CN206668236U CN206668236U CN201720036838.5U CN201720036838U CN206668236U CN 206668236 U CN206668236 U CN 206668236U CN 201720036838 U CN201720036838 U CN 201720036838U CN 206668236 U CN206668236 U CN 206668236U
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- China
- Prior art keywords
- packing element
- injector
- injection well
- acid filling
- steel pipe
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Abstract
The utility model discloses the acid filling steel pipe of a kind of positioning acidizing device of stratified injection well, including segmented, acid filling steel pipe is connected with being pumped into the high-pressure plunger pump conduit of high pressure acid solution；It is connected to interior packer between acid filling steel pipe between acid filling steel pipe in upper oil pipe, in lower oil pipe, has in interior packer inflatable and by upper oil pipe, the packing element of lower oil pipe bore seal；Level pressure injector is connected between acid filling steel pipe in level pressure injection well downhole flow regulator, the check valve that acid filling steel pipe inner high voltage acid solution is injected to oil reservoir to be acidified by level pressure injection well downhole flow regulator is provided with level pressure injector.The utility model keeps the working condition of each separate injection interval injection well downhole flow regulator of full well constant in separate layer acid treatment, high pressure acid solution is not with wellhead tree tree, down-hole oil tube and being acidified interval downhole tool and contacting, high pressure acid solution is efficiently solved to wellhead tree tree and the corrosiveness of full well oil pipe, the dosage of high pressure acid solution is reduced, reduces influence of the acidizing treatment to environment.
Description
Technical field
It the utility model is related to technical field of petroleum extraction, the positioning acidifying dress of especially a kind of oil field layered injection well
Put.
Background technology
Acidizing Technology is the main augmented injection means of oil field injection well at present, and the well of injection string is layered for tripping in,
If to carry out acidification to a certain interval, the injection well downhole flow regulator of other intervals must just be closed in advance, have ensured that high pressure acid solution
Pre-acidified interval can be smoothly entered, the method for use is to be injected high pressure acid solution in down-hole oil tube using high-pressure pump in well head,
And fill up full well oil pipe and get to pre-acidified interval, certain journey can be produced to wellhead tree tree, full well oil pipe and downhole tool
The corrosiveness of degree, the workload for simultaneously closing off and reopening other interval injection well downhole flow regulators are also bigger.
Utility model content
The technical problems to be solved in the utility model is：Overcome deficiency in the prior art, there is provided kept during one kind acidifying
The working condition of complete each separate injection interval injection well downhole flow regulator of well is constant, and high pressure acid solution is not with wellhead tree tree, down-hole oil tube and being acidified layer
The positioning acidizing device of the stratified injection well of section downhole tool contact.
Technical scheme is used by the utility model solves its technical problem：A kind of positioning acidifying dress of stratified injection well
Put, transferred by well head to layering injection string, the layering injection string includes upper oil pipe and lower oil pipe, described upper oil pipe
It is connected with upper packer, level pressure injection well downhole flow regulator and lower packet in turn between lower oil pipe, described level pressure injection well downhole flow regulator correspondingly treats acid
Carburetion layer position is set, and the acid filling steel pipe provided with segmented is run through between upper oil pipe and lower oil pipe, acid filling steel pipe is with being pumped into high pressure
The high-pressure plunger pump conduit connection of acid solution；Divide between acid filling steel pipe between acid filling steel pipe in upper oil pipe, in lower oil pipe
Interior packer is not connected with, and described interior packer outwards expands after having compression and seals oil pipe, the glue of lower oil pipe inner chamber
Cylinder；Level pressure injector is connected between acid filling steel pipe in level pressure injection well downhole flow regulator, level pressure injector has in acid filling steel pipe
High pressure acid solution injects the check valve of oil reservoir to be acidified by level pressure injection well downhole flow regulator.
Further, acid filling steel pipe bottom is threaded with guiding plug.
Interior packer upper and lower ends are fixed by box cupling and acid filling steel pipe respectively, and described interior packer includes being fixed on glue
The packing element component of both sides above and below packing element is taken over and be symmetrically arranged at centered on packing element in packing element in cylinder, is taken in packing element
The expansion that high pressure acid solution is depressed into packing element inwall is respectively symmetrically provided with acid filling steel pipe pipeline connection and upper corresponding packing element upper and lower side
Hole.
Further, for the ease of packing element expansion plugging, packing element component includes packing element joint and packing element central tube, packing element connect
Headgear is located at outside box cupling, and packing element central tube is arranged in packing element joint and packing element between adapter, described packing element upper and lower ends point
It is not outer to be extended down in packing element joint and packing element between adapter and be molded connection with packing element central tube.
Further, packing element joint is threadedly coupled with box cupling, between described box cupling and glue bucket joint, in box cupling and packing element
Sealing is provided with O-ring between adapter, can effectively improve the sealing property between each connector.
Level pressure injector includes injector top connection and bottom and the acid filling that top is connected and penetrated with acid filling steel tube screw thread
The injector lower contact that steel tube screw thread is connected and penetrated, it is threaded between the injector top connection and injector lower contact
Injector center tap, injector center tap have axial bore.Check valve is arranged in axial bore, including regulation plug.Axle
Inward hole lower end is fixed by O-ring and regulation plug sealing, and the acid filling hole is opened in injector center tap length direction
At point, the connection of acid filling hole simultaneously penetrates with level pressure injection well downhole flow regulator, adjusts and spring is fixed with plug, spring top is then connected with top nothing
The steel ball of axial bore blocked during downward pressure by spring jacking above acid filling hole, the axial bore below the acid filling hole are straight
Footpath is more than steel ball size, and the axial bore diameter above acid filling hole is less than steel ball size, described regulation plug, spring, steel ball
Match somebody with somebody with axial bore and be combined into check valve.
Further, in order to effectively improve the sealing inside level pressure injector between each joint, injector top connection
Sealing is provided with O-ring respectively between injector center tap, between injector lower contact and injector center tap.
The beneficial effects of the utility model are：The positioning acidizing device of stratified injection well provided by the utility model, acidifying
When keep the working condition of each separate injection interval injection well downhole flow regulator of full well constant, high pressure acid solution not with wellhead tree tree, down-hole oil tube and not
It is acidified the contact of interval downhole tool.
Brief description of the drawings
The utility model is further illustrated with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation before the utility model injection high pressure acid solution.
Fig. 2 is the structural representation after the utility model injection high pressure acid solution.
Fig. 3 is the axial sectional view of packer in the utility model.
Fig. 4 is the axial sectional view of the utility model level pressure injector.
The acid filling steel of 2. upper packer of oil pipe, 3. level pressure injection well downhole flow regulator, 4. lower packet 5. under oil pipe 1-2. on 1-1. in figure
Adapter 6-5. inflation ports in packer 6-1. packing elements 6-2. packing elements joint 6-3. packing element central tube 6-4. packing elements in pipe 6.
7. level pressure injector 7-1. top connection 7-2. lower contact 7-3. center tap 7-4. axial bores 7-5. regulation plug 7-6. notes
Sour hole 7-7. spring 7-8. steel balls 8. are oriented to 9. box cupling 10.O types circle of plug, 11. oil reservoir to be acidified
Embodiment
The utility model is further described presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram only to show
Meaning mode illustrates basic structure of the present utility model, therefore it only shows the composition relevant with the utility model.
A kind of positioning acidizing device of stratified injection well as shown in Figures 1 to 4, transferred by well head to layering injection string
It is interior, it is described layering injection string include upper oil pipe 1-1 and lower oil pipe 1-2, between described upper oil pipe 1-1 and lower oil pipe 1-2 according to
It is secondary to be connected with upper packer 2, level pressure injection well downhole flow regulator 3 and lower packet 4, corresponding 11, the oil reservoir to be acidified of described level pressure injection well downhole flow regulator 3
Install.
Run through the acid filling steel pipe 5 provided with segmented, the bottom screw thread of acid filling steel pipe 5 between upper oil pipe 1-1 and lower oil pipe 1-2
It is connected with and is oriented to plug 8.Acid filling steel pipe 5 is connected with being pumped into the high-pressure plunger pump conduit of high pressure acid solution；In upper oil pipe 1-1
Interior packer 6 is connected between acid filling steel pipe 5 between acid filling steel pipe 5, in lower oil pipe 1-2, described interior packer 6 has
Outwards expand after having compression and seal oil pipe 1-1, the packing element 6-1 of lower oil pipe 1-2 inner chambers.The interior upper and lower ends of packer 6 difference
Fixed by box cupling 9 and acid filling steel pipe 5, described interior packer 6 include being fixed in the packing element in packing element 6-1 adapter 6-4 with
It is symmetrically arranged at the packing element component of both sides above and below packing element 6-1 centered on packing element 6-1, adapter 6-4 and acid filling steel in packing element
The pipeline connection of pipe 5 and upper corresponding packing element 6-1 upper and lower sides are respectively symmetrically provided with the inflation port that high pressure acid solution is depressed into packing element 6-1 inwalls
6-5。
Further, packing element joint 6-2 and packing element central tube are included for the ease of packing element 6-1 expansion pluggings, packing element component
6-3, packing element joint 6-2 are set in outside box cupling 9, packing element central tube 6-3 be arranged in packing element joint 6-2 and packing element adapter 6-4 it
Between, described packing element 6-1 upper and lower ends respectively it is outer be extended down in packing element joint 6-2 and packing element between adapter 6-4 and with packing element center
Pipe 6-3 molding connections.Packing element joint 6-2 is threadedly coupled with box cupling 9, between described box cupling 9 and glue bucket joint, box cupling 9 and glue
Sealing is provided with O-ring 10 between adapter 6-4 in cylinder, can effectively improve the sealing property between each connector.
Level pressure injector 7 is connected between acid filling steel pipe 5 in level pressure injection well downhole flow regulator 3, is additionally provided with level pressure injector 7 for acid
The passage for the both ends acid filling steel pipe 5 of connection level pressure injector 7 that liquid passes through.Also having in level pressure injector 7 will be high in acid filling steel pipe 5
Pressure acid solution injects the check valve of oil reservoir 11 to be acidified by level pressure injection well downhole flow regulator 3.
Level pressure injector 7 include the top injector top connection 7-1 that is threadedly coupled and penetrates with acid filling steel pipe 5 and bottom and
Injector the lower contact 7-2, the injector top connection 7-1 and injector lower contact 7-2 that acid filling steel pipe 5 is threadedly coupled and penetrated
Between be threaded with injector center tap 7-3, injector center tap 7-3 has axial bore 7-4, and check valve is arranged on axial direction
In endoporus 7-4, including regulation plug 7-5, axial bore 7-4 lower ends are fixed by O-ring 10 and the 7-5 sealings of regulation plug.Institute
State acid filling hole 7-6 and be opened in injector center tap 7-3 length direction midpoints, the 7-6 connections of acid filling hole are simultaneously passed through with level pressure injection well downhole flow regulator 3
It is logical, spring 7-7 is fixed with regulation plug 7-5, spring 7-7 tops are pushed up when being then connected with top without downward pressure by spring 7-7
Rise the axial bore 7-4 diameters below the axial bore 7-4 blocked above the 7-6 of acid filling hole steel ball 7-8, the acid filling hole 7-6
More than steel ball 7-8 diameters, the axial bore 7-4 diameters above the 7-6 of acid filling hole are less than steel ball 7-8 diameters.Adjust plug 7-5, bullet
Spring 7-7, steel ball 7-8 and axial bore 7-4, which match somebody with somebody, is combined into one-way valve structures.It is each in order to effectively improve the inside of level pressure injector 7
Sealing between joint, between injector top connection 7-1 and injector center tap 7-3, injector lower contact 7-2 and injector
Sealing is provided with O-ring 10 respectively between center tap 7-3.
When positioning acidifying, will be extremely layered below the positioning acidizing device of above-mentioned stratified injection well in injection string, it is fixed to make
Pressure injector 7 and the position correspondence of level pressure injection well downhole flow regulator 3 for being arranged on the underground position of oil reservoir 11 to be acidified.Then pass through high-pressure plunger pump
High pressure acid solution is pumped into acid filling steel pipe 5.
High pressure acid solution flows through the interior packer 6 in oil pipe 1-1, and point for passing through the both ends pipeline connection of level pressure injector 7
The insertion pipeline of segmentation steel pipe continues towards the interior packer 6 in lower oil pipe 1-2.In in upper oil pipe 1-1 and lower oil pipe 1-2
When pressure (i.e. internal pressure) at packer 6 is more than pressure in its outside down-hole oil tube 1-2, high pressure acid solution by inflation port 6-5 by
Gradually pressurizeed to packing element 6-1 inwalls, packing element 6-1 outwards expansion until by upper oil pipe 1-1 and lower oil pipe 1-2 bore seals.Now after
Continue and high pressure acid solution is pumped into acid filling steel pipe 5, pressure increase of the acid filling steel pipe 5 at check valve steel ball 7-8, steel ball 7-8 is pressed
Downwards, pipeline is turned at the 7-6 of acid filling hole, and high pressure acid solution can be flowed out level pressure injector 7 by acid filling hole 7-6 and squeeze into supreme oil pipe
The sealing annular space that interior packer 6 in 1-1 and lower oil pipe 1-2 is formed after expanding.Under pressure, high pressure acid solution is then led to
Cross level pressure injection well downhole flow regulator 3 to enter in oil reservoir 11 to be acidified, realize positioning acidifying purpose.
The positioning acidizing device for the stratified injection well being so designed that, by installing acid filling steel pipe 5, interior envelope additional in addition in oil pipe
Every device 6 and level pressure injector 7, high pressure acid solution is injected directly into oil pipe in well head when being acidified relative to tradition, high pressure acid solution is used
Measure small, be advantageous to environmental protection.Without the working condition of the complete each interval injection well downhole flow regulator of well of change during acidifying.Other each layers can injection well downhole flow regulator
Can normal work.High pressure acid solution does not contact with wellhead tree tree, down-hole oil tube 1-2 and other interval downhole tools, reduces acidifying
The influence to it is operated, the service life of wellhead tree tree, down-hole oil tube 1-2 and other interval downhole tools is greatly prolonged, subtracts
Few oilfield exploitation cost.
For above-mentioned embodiment only to illustrate technical concepts and features of the present utility model, its object is to allow be familiar with this skill
The personage of art can understand content of the present utility model and be carried out, and protection model of the present utility model can not be limited with this
Enclose, all equivalent change or modifications made according to the utility model Spirit Essence, should all cover in protection model of the present utility model
In enclosing.
Claims (7)
1. a kind of positioning acidizing device of stratified injection well, it will be positioned acidizing device by well head conveying equipment and transferred to layering and injected
In tubing string, the layering injection string includes upper oil pipe (1-1) and lower oil pipe (1-2), described upper oil pipe (1-1) and lower oil pipe
It is connected with upper packer (2), level pressure injection well downhole flow regulator (3) and lower packet (4), described level pressure injection well downhole flow regulator (3) between (1-2) in turn
Corresponding oil reservoir (11) position to be acidified is set, it is characterized in that：Run through between upper oil pipe (1-1) and lower oil pipe (1-2) and be provided with segmentation
The acid filling steel pipe (5) of formula, acid filling steel pipe (5) are connected with being pumped into the high-pressure plunger pump conduit of high pressure acid solution；Positioned at upper oil pipe (1-1)
Interior packer (6) is connected between acid filling steel pipe (5) between interior acid filling steel pipe (5), in lower oil pipe (1-2), it is described
Interior packer (6) have be pressurized after outwards expand and seal oil pipe (1-1), the packing element (6-1) of lower oil pipe (1-2) inner chamber；
Level pressure injector (7) is connected between acid filling steel pipe (5) in level pressure injection well downhole flow regulator (3), level pressure injector (7) has will note
Sour steel pipe (5) inner high voltage acid solution injects the check valve of oil reservoir to be acidified (11) by level pressure injection well downhole flow regulator (3).
2. the positioning acidizing device of stratified injection well according to claim 1, it is characterized in that：Described acid filling steel pipe (5)
Bottom, which is threaded with, is oriented to plug (8).
3. the positioning acidizing device of stratified injection well according to claim 1, it is characterized in that：Described interior packer (6)
Upper and lower ends are fixed by box cupling (9) and acid filling steel pipe (5) respectively, and described interior packer (6) includes being fixed on packing element (6-1)
(6-4) is taken in interior packing element and the packing element of packing element (6-1) both sides up and down is symmetrically arranged at centered on packing element (6-1)
(6-1) component, (6-4) and acid filling steel pipe (5) pipeline connection are taken in packing element and upper corresponding packing element (6-1) upper and lower side respectively symmetrically
It is provided with the inflation port (6-5) that high pressure acid solution is depressed into packing element (6-1) inwall.
4. the positioning acidizing device of stratified injection well according to claim 3, it is characterized in that：Packing element (6-1) component
Including packing element joint (6-2) and packing element central tube (6-3), packing element joint (6-2) is set in box cupling (9) outside, packing element central tube (6-
3) it is arranged in packing element joint (6-2) and packing element and takes between (6-4), described packing element (6-1) upper and lower ends are outer respectively is extended down to
Take in packing element joint (6-2) and packing element between (6-4) and be molded with packing element central tube (6-3) and connected.
5. the positioning acidizing device of stratified injection well according to claim 4, it is characterized in that：Packing element joint (6-2) is with connecing
(9) threaded connection is bound round, seals and sets between adapter (6-4) between described box cupling (9) and glue bucket joint, in box cupling (9) and packing element
There is O-ring (10).
6. the positioning acidizing device of stratified injection well according to claim 1, it is characterized in that：Described level pressure injector
(7) injector top connection (7-1) and bottom and the acid filling steel pipe (5) that top is threadedly coupled and penetrated with acid filling steel pipe (5) are included
The injector lower contact (7-2) for being threadedly coupled and penetrating, the injector top connection (7-1) and injector lower contact (7-2) it
Between be threaded with injector center tap (7-3)；The acid filling hole (7-6) is opened in injector center tap (7-3) length direction
Midpoint, acid filling hole (7-6) connection simultaneously penetrate with level pressure injection well downhole flow regulator (3)；Injector center tap (7-3) has axial bore (7-
4), check valve is arranged in axial bore (7-4), including regulation plug (7-5), and axial bore (7-4) lower end passes through O-ring
(10) fixed with regulation plug (7-5) sealing, be fixed with spring (7-7) on regulation plug (7-5), spring (7-7) top then connects
The steel ball for the axial bore (7-4) blocked when being connected to top without downward pressure by spring (7-7) jacking above acid filling hole (7-6)
(7-8), axial bore (7-4) diameter below the acid filling hole (7-6) is more than steel ball (7-8) diameter, above acid filling hole (7-6)
Axial bore (7-4) diameter be less than steel ball (7-8) diameter.
7. the positioning acidizing device of stratified injection well according to claim 6, it is characterized in that：Described injector top connection
Sealed respectively between (7-1) and injector center tap (7-3), between injector lower contact (7-2) and injector center tap (7-3)
Provided with O-ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720036838.5U CN206668236U (en) | 2017-01-13 | 2017-01-13 | The positioning acidizing device of stratified injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720036838.5U CN206668236U (en) | 2017-01-13 | 2017-01-13 | The positioning acidizing device of stratified injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206668236U true CN206668236U (en) | 2017-11-24 |
Family
ID=60378259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720036838.5U Expired - Fee Related CN206668236U (en) | 2017-01-13 | 2017-01-13 | The positioning acidizing device of stratified injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206668236U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939784A (en) * | 2017-01-13 | 2017-07-11 | 上海全泽能源科技有限公司 | The positioning acidizing device of stratified injection well |
-
2017
- 2017-01-13 CN CN201720036838.5U patent/CN206668236U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939784A (en) * | 2017-01-13 | 2017-07-11 | 上海全泽能源科技有限公司 | The positioning acidizing device of stratified injection well |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20190113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |