CN204457690U - A kind of dispensing well middle level injection test tubing string - Google Patents
A kind of dispensing well middle level injection test tubing string Download PDFInfo
- Publication number
- CN204457690U CN204457690U CN201420807539.3U CN201420807539U CN204457690U CN 204457690 U CN204457690 U CN 204457690U CN 201420807539 U CN201420807539 U CN 201420807539U CN 204457690 U CN204457690 U CN 204457690U
- Authority
- CN
- China
- Prior art keywords
- packer
- tubing string
- middle level
- oil pipe
- injection test
- 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.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 title claims abstract description 39
- 239000007924 injection Substances 0.000 title claims abstract description 39
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 20
- 238000000151 deposition Methods 0.000 abstract description 5
- 238000012856 packing Methods 0.000 description 6
- 238000000605 extraction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of dispensing well middle level injection test tubing string, comprise oil pipe, the first packer Y531, screen casing, the second packer Y521, plug, described oil pipe is connected to well head place, and packer is connected to the lower end of oil pipe, connect screen casing, the second packer afterwards successively, plug is connected to whole tubing string bottom.The utility model structure is simple, easy to operate, safe and reliable, is easy to oil field and extensively promotes the use of, and the water injection pressure that this device can realize certain single goal layer in the middle of depositing well is quickly and accurately determined, provides Data support for formulating lower step measure.
Description
Technical field
The utility model relates to oil extraction in oil field seperated layer water injection field, solves the water injection pressure being applicable to target zone in the middle of subdivision injection and determines, particularly relate to a kind of dispensing well middle level injection test tubing string.
Background technology
The most of oil field of China adopts waterflooding extraction, and along with the requirement of oil reservoir fine development is more and more higher, the water filling progression of water filling block requires also corresponding raising.At present, promotion oil recovery factory has water injection well 91 mouthfuls, and wherein the water injection well of the dispensing number of plies more than 3 layers has 22 mouthfuls.For separate water injection well, the water injection pressure of each layer is the base values formulating water injection well measures is also one of most important index, and traditional injection test tubing string is employing Y521 type packer, pump truck is utilized to carry out pressure testing after lower going-into-well cylinder sets, this pressure testing mode has good effect for the determination of the bottom and the superiors' water injection pressure, but cannot determine the water injection pressure of middle target zone.Adopt two Y521 type packers to carry out card envelope intermediate layer, cannot determine again whether two, down-hole packer all sets successfully.
Therefore, be necessary to provide a kind of novel middle level injection test tubing string, realize effective injection test of target zone in the middle of multilayer water filling, determine its accurate water injection pressure.
Utility model content
The purpose of this utility model is for separate water injection well tubing string provides a kind of reliable, stable middle target zone injection test tubing string, can determine its certain single goal layer water injection pressure middle of depositing well accurately and effectively.For this reason, a kind of dispensing well middle level injection test tubing string is designed.
A kind of dispensing well middle level injection test tubing string, wherein, comprise oil pipe, the first packer, screen casing, the second packer, plug, described oil pipe is connected to well head place, the lower end of the first packer connected pipes, first packer is connected with the second packer by screen casing, and plug is connected to whole tubing string bottom.
Further, described first packer adopts Y531 packer.
Further, the Y521 packer of described second packer employing.
Further, described screen casing is at least one section, and screen casing is large eyelet or little eyelet.
The utility model structure is simple, easy to operate, safe and reliable, is easy to oil field and extensively promotes the use of; The water injection pressure that this device can realize certain single goal layer in the middle of depositing well is quickly and accurately determined, provides Data support for formulating lower step measure.
Accompanying drawing explanation
In order to the technical scheme in clearer explanation the utility model enforcement, in describing embodiment below, required accompanying drawing does simple introduction, apparent, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of injection test tubing string in middle level of the present utility model.
Wherein: 1, oil pipe 2, first packer 3, screen casing 4, second packer 5, plug.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.
Shown in Fig. 1, the utility model provides a kind of middle level injection test tubing string, and it comprises oil pipe 1, first packer 2, screen casing 3, second packer 4, plug 5.Specifically oil pipe 1 is connected to well head place, and the first packer 2 is connected to the lower end of oil pipe 1, and connect screen casing 3, second packer 4 successively afterwards, plug 5 is connected to whole tubing string bottom.Described screen casing is at least one section, and screen casing is large eyelet or little eyelet.
In the utility model, the first packer 2 adopts Y531 packer, for oil jacket annulus access between shutoff target zone and top oil reservoir; Second packer 4 adopts ZY521 packer, and for shutoff target zone and transfer oil jacket annulus access between oil reservoir, injection test fluid injects target zone by screen casing 3.
The utility model is mainly combined into dispensing well middle level injection test tubing string by oil pipe, Y531 packer, griddle pipe, Y521 packer and plug etc.
The Y531 packer that the utility model adopts is a kind of compression packer, and it has packing element, by suppressing to water filling in oil pipe 1, packing element is compressed, and packing element diameter becomes large, thus realizes setting oil jacket annular space; When deblocking, by upper lifting pipe post, packing element elasticity returns to ortho states, just can realize deblocking.
The Y521 packer that the utility model adopts is the packer set by theory of mechanics, and it has packing element, by carry oil pipe 1, and lower drain line 1 after rotating tubing string, realize setting of Y521 packer; When deblocking, return to ortho states by upper lifting pipe post packing element elasticity, just can realize deblocking.
Adopt this uses novel to target zone enforcement injection test time, first tubing string is transferred to assigned address, by on carry oil pipe 1, and transfer to original position after rotating several weeks, realize setting of packer 4, then to pitching in oil pipe 1, form confined space, backward oil pipe 1 in inject to suppress and set pressure to it, realize setting of packer 2.Continue to suppress, ball is hit down to plug, inject fluid and inject stratum by screen casing 3, by controlling the maximum suction pressure of target zone that injection discharge capacity just can obtain.
Equipment combines: oil pipe+dispensing well middle level injection test tubing string;
Technological principle: when carrying out injection test to certain target zone in the middle of depositing well, after putting in place under this tubing string, carries first and rotates tubing string and set Y521 packer, and then pitching is suppressed and set Y531 packer.After packer all sets, just suppressed by well head, the maximum water injection pressure of test purpose layer.
This equipment characteristic: this apparatus structure is simple, easy and simple to handle, the examination of accurate quick can go out the maximum water injection pressure of certain single goal layer in the middle of depositing well.
Obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Claims (4)
1. a dispensing well middle level injection test tubing string, it is characterized in that, comprise oil pipe (1), the first packer (2), screen casing (3), the second packer (4), plug (5), described oil pipe (1) is connected to well head place, the lower end of the first packer (2) connected pipes (1), first packer (2) is connected with the second packer (4) by screen casing (3), and plug (5) is connected to whole tubing string bottom.
2. dispensing well middle level injection test tubing string according to claim 1, is characterized in that, described first packer (2) adopts Y531 packer.
3. dispensing well middle level injection test tubing string according to claim 1 and 2, is characterized in that, the Y521 packer that described second packer (4) adopts.
4. dispensing well middle level injection test tubing string according to claim 3, it is characterized in that, described screen casing (3) is at least one section, and screen casing is large eyelet or little eyelet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420807539.3U CN204457690U (en) | 2014-12-18 | 2014-12-18 | A kind of dispensing well middle level injection test tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420807539.3U CN204457690U (en) | 2014-12-18 | 2014-12-18 | A kind of dispensing well middle level injection test tubing string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457690U true CN204457690U (en) | 2015-07-08 |
Family
ID=53664592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420807539.3U Expired - Fee Related CN204457690U (en) | 2014-12-18 | 2014-12-18 | A kind of dispensing well middle level injection test tubing string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855098A (en) * | 2021-02-19 | 2021-05-28 | 大庆市天德忠石油科技有限公司 | Water plugging pipe column |
-
2014
- 2014-12-18 CN CN201420807539.3U patent/CN204457690U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855098A (en) * | 2021-02-19 | 2021-05-28 | 大庆市天德忠石油科技有限公司 | Water plugging pipe column |
| CN112855098B (en) * | 2021-02-19 | 2021-10-29 | 大庆市天德忠石油科技有限公司 | Water plugging pipe column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |