CN203097821U - Anti-blocking constant pressure switch of water injection pipe column - Google Patents
Anti-blocking constant pressure switch of water injection pipe column Download PDFInfo
- Publication number
- CN203097821U CN203097821U CN 201220704863 CN201220704863U CN203097821U CN 203097821 U CN203097821 U CN 203097821U CN 201220704863 CN201220704863 CN 201220704863 CN 201220704863 U CN201220704863 U CN 201220704863U CN 203097821 U CN203097821 U CN 203097821U
- Authority
- CN
- China
- Prior art keywords
- water injection
- constant pressure
- pressure switch
- tubular plunger
- sliding sleeve
- 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 - Lifetime
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 title claims abstract description 47
- 239000004576 sand Substances 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000004323 axial length Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The utility model relates to an anti-blocking constant pressure switch of a water injection pipe column, which comprises an upper joint and a lower joint, wherein an outer cylinder is externally connected and fixed between the upper joint and the lower joint; a tubular plunger is sleeved on the outer wall of the sliding sleeve between the flange and the upper joint, the bottom end of the tubular plunger abuts against the flange, a compression spring is arranged between the tubular plunger and the upper joint, and the tubular plunger is fixedly connected with the outer barrel through a shear pin; a through water injection hole is formed in the side wall of the lower joint and is plugged by the bottom end of the sliding sleeve; the bottom of the lower joint is fixedly provided with a ball seat, and the ball seat is provided with a valve port sealed by a steel ball. The device can effectively prevent sand and oil which are returned from the stratum after the injection is stopped from entering the pipe column to cause the pipe column to be blocked; and has the characteristics of simple structure, good sealing performance, high reliability, convenient operation and the like.
Description
Technical field
The utility model is to suppress set packer for separate injection well of oil field affusion the device that builds the pressure is provided about a kind of in the oil exploitation technology, relates in particular to a kind of anti-blocking constant pressure switch of water injection string.
Background technology
Separate injection well of oil field affusion generally all adopts the less inflatable packer of sleeve pipe infringement, this packer need provide certain pressure just can set when setting, generally all be to realize building the pressure with destroying ball seat, this destroy ball seat build the pressure make packer setting after, continue to get to certain pressure, little club falls in the well and realizes normal water filling.This destroy ball seat in falling into well after, in a single day well stops to annotate, the stratum can be returned and tell sand, wet goods dirt and stop up tubing string, and water injection string was lost efficacy; And ball is fallen in the well and can be caused adverse effect for producing later on.
Thus, the inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of anti-blocking constant pressure switch of water injection string, to overcome the defective of prior art.
The utility model content
The purpose of this utility model is to provide a kind of anti-blocking constant pressure switch of water injection string, and this device can effectively prevent to stop to annotate the stratum, back and return the sand told and oil and enter and cause tubing string to stop up in the tubing string; And have simple in structure, good airproof performance, reliability height, easy to operate, characteristics such as popularizing application prospect is wide.
Another purpose of the present utility model is to provide a kind of anti-blocking constant pressure switch of water injection string, and this device has long anti-blocking pocket, can prevent the obstruction of constant pressure switch, improves the anti-blocking ability of instrument.
The purpose of this utility model is to realize like this, a kind of anti-blocking constant pressure switch of water injection string, described anti-blocking constant pressure switch includes top connection and lower contact, external and be fixed with a urceolus between upper and lower joint, the inner wall sealing of described upper and lower joint is arranged with a sliding sleeve, the outer wall of described sliding sleeve and be provided with a flange between upper and lower joint; The sheathed tubular plunger of sliding sleeve outer wall between described flange and the top connection, the bottom of described tubular plunger is resisted against on the described flange, is provided with the compression spring between described tubular plunger and the top connection, and described tubular plunger is fixedlyed connected by a shear pin with urceolus; The sidewall of described lower contact is provided with the water injection hole of perforation, and described water injection hole is by the shutoff of sliding sleeve bottom; Described lower contact bottom is fixed with a ball seat, and this ball seat is provided with a valve port that is set by steel ball.
In a better embodiment of the present utility model, described ball seat is connected in the lower contact bottom by sand setting oil pipe and tubing coupling.
In a better embodiment of the present utility model, described sand setting oil pipe is provided with multistage.
In a better embodiment of the present utility model, be equipped with a plurality of water injection holes on the sidewall of described lower contact.
In a better embodiment of the present utility model, the outer wall of described tubular plunger is stepped, and the bottom of described compression spring is replaced at described end difference, is provided with the sliding distance of tubular plunger between the top of described tubular plunger and the top connection.
In a better embodiment of the present utility model, described sliding distance is greater than the axial length of upper edge to the sliding sleeve bottom of described water injection hole.
From the above mentioned, the anti-blocking constant pressure switch of water injection string of the present utility model can effectively prevent to stop to annotate the stratum, back and returns the sand told and oil and enter and cause tubing string to stop up in the tubing string; And have simple in structure, good airproof performance, reliability height, easy to operate, characteristics such as popularizing application prospect is wide; This device has long anti-blocking pocket, can prevent the obstruction of constant pressure switch, improves the anti-blocking ability of instrument.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: be the structural representation of the anti-blocking constant pressure switch of the utility model water injection string.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.
As shown in Figure 1, the utility model proposes a kind of anti-blocking constant pressure switch of water injection string, described anti-blocking constant pressure switch 100 includes top connection 1 and lower contact 2, external and be fixed with a urceolus 3 between upper and lower joint 1,2, the inner wall sealing of described upper and lower joint 1,2 is arranged with a sliding sleeve 4, the outer wall of described sliding sleeve 4 and be provided with a flange 41 between upper and lower joint; The sheathed tubular plunger 5 of sliding sleeve outer wall between described flange 41 and the top connection 1, the bottom of described tubular plunger 5 is resisted against on the described flange 41, be provided with compression spring 6 between described tubular plunger 5 and the top connection 1, described tubular plunger 5 is fixedlyed connected by a shear pin 31 with urceolus 3; The sidewall of described lower contact 2 is provided with the water injection hole 21 of perforation, and described water injection hole 21 can be established a plurality of along the side wall ring of lower contact 2, and described water injection hole 21 is by the bottom shutoff of sliding sleeve 4; Described lower contact 2 bottoms are fixed with a ball seat 7, and this ball seat 7 is provided with a valve port 72 that is set by steel ball 71.In the present embodiment, described ball seat 7 is the bottoms that are connected in lower contact 2 by sand setting oil pipe 81 and tubing coupling 82.
The anti-blocking constant pressure switch 100 of the utility model water injection string is connected with packer by oil pipe on it in use, and the packer upper end connects oil pipe again to constitute described water injection string.In the water injection string lower going-into-well, when anti-blocking constant pressure switch 1 00 times behind design attitude, throw steel ball 71, when steel ball 71 arrive ball seats 7 and with valve port 72 shutoff after, with cementing truck tubing string is suppressed; When pressure was elevated to packer setting pressure, voltage stabilizing continued to suppress after 5～8 minutes; When the shear pin 31 that reaches anti-blocking constant pressure switch 100 when pressure was cut off pressure, shear pin 31 was cut off, and this moment, sliding sleeve 4 drove tubular plunger 5 and compression spring 6 is up, water injection hole 21 is exposed and realizes water filling.When stopping annotating, sliding sleeve 4 and tubular plunger 5 are compressed the effect of spring 6 elastic force and descending, thereby close water injection hole 21, can prevent that the anti-dirt of telling in stratum from entering tubing string, have avoided stopping annotating the obstruction of back dirt to tubing string.
After well was opened notes, injecting water, to promote the sliding sleeve 4 of anti-blocking constant pressure switch 100 up, and 4 of sliding sleeves drive tubular plunger 5 and compression spring 6 is up, thereby expose water injection hole 21, realize normal water filling.In long-term the injecting process, foreign material such as the incrustation scale of generation and iron rust can be piled up and stop up sliding sleeve 4 at anti-blocking constant pressure switch 100 lower positions, make the sliding sleeve 4 can not be up, cause water injection string to lose efficacy.In order to prevent that above problem from taking place, the utility model spy separates with ball seat 7 lower contact 2 in the anti-blocking constant pressure switch 100 by sand setting oil pipe 81, the quantity that can regulate the sand setting oil pipe 81 between lower contact 2 and the ball seat 7 according to the newness degree of this well casing post and injection water quality, dirt is deposited to lower contact 2 with upper/lower positions, avoided the obstruction of anti-blocking constant pressure switch 100.
The anti-blocking constant pressure switch of the utility model water injection string is adapted at being set in the separate injection well of oil field affusion of separating by inflatable packer and uses.This device is made up of constant pressure switch, sand setting oil pipe and ball seat three parts, can realize the outer choke preventing function of pipe in the water injection pipe column jecket; This anti-blocking constant pressure switch design is ingenious, has reliable anti-blocking structure, and is simple to operate, solved the easily stifled difficult problem that lost efficacy of expanding separate injection tubing string, and it is substantial and perfect that oil-field flooding zonal injection technology technology is further obtained.
Further, as shown in Figure 1, in the present embodiment, described urceolus 3 is threaded with top connection 1, lower contact 2 and is fixing by position-limitting pin 32; Be provided with O RunddichtringO 42 between the inwall of the outer wall of described sliding sleeve 4 and top connection 1 and lower contact 2; The outer wall of described tubular plunger 5 is stepped, and the bottom of described compression spring 6 is replaced at described end difference, is provided with the sliding distance L of tubular plunger between the top of described tubular plunger 5 and the top connection 1; Described sliding distance L is greater than the axial length H of upper edge to sliding sleeve 4 bottoms of described water injection hole 21.
The anti-blocking constant pressure switch of the utility model water injection string has following advantage:
(1) this device internal construction is simple, and manufacture difficulty is low, and is easy to operate, is easier to the oil field and extensively promotes the use of;
(2) this device utilizes sliding sleeve, plunger and spring to make up, and has reached the anti-blocking purpose of low pressure, makes the dispensing well after stopping annotating, and can effectively prevent to manage outer dirt and enter the interior and obstruction that causes of pipe;
(3) this device separates constant pressure switch with ball seat, and has designed the sand setting oil pipe of flexibility and changeability, has prevented the obstruction to constant pressure switch of the dirt that produces in the injecting process.
(4) this device provides strong equipment support for oil field zonal injection technology technology, for water injection well in oil fields has increased a new technological means.
The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (6)
1. the anti-blocking constant pressure switch of a water injection string, it is characterized in that: described anti-blocking constant pressure switch includes top connection and lower contact, external and be fixed with a urceolus between upper and lower joint, the inner wall sealing of described upper and lower joint is arranged with a sliding sleeve, the outer wall of described sliding sleeve and be provided with a flange between upper and lower joint; The sheathed tubular plunger of sliding sleeve outer wall between described flange and the top connection, the bottom of described tubular plunger is resisted against on the described flange, is provided with the compression spring between described tubular plunger and the top connection, and described tubular plunger is fixedlyed connected by a shear pin with urceolus; The sidewall of described lower contact is provided with the water injection hole of perforation, and described water injection hole is by the shutoff of sliding sleeve bottom; Described lower contact bottom is fixed with a ball seat, and this ball seat is provided with a valve port that is set by steel ball.
2. the anti-blocking constant pressure switch of water injection string as claimed in claim 1 is characterized in that: described ball seat is connected in the lower contact bottom by sand setting oil pipe and tubing coupling.
3. the anti-blocking constant pressure switch of water injection string as claimed in claim 2, it is characterized in that: described sand setting oil pipe is provided with multistage.
4. the anti-blocking constant pressure switch of water injection string as claimed in claim 1 is characterized in that: be equipped with a plurality of water injection holes on the sidewall of described lower contact.
5. the anti-blocking constant pressure switch of water injection string as claimed in claim 1, it is characterized in that: the outer wall of described tubular plunger is stepped, the bottom of described compression spring is replaced at described end difference, is provided with the sliding distance of tubular plunger between the top of described tubular plunger and the top connection.
6. the anti-blocking constant pressure switch of water injection string as claimed in claim 5, it is characterized in that: described sliding distance is greater than the axial length of upper edge to the sliding sleeve bottom of described water injection hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220704863 CN203097821U (en) | 2012-12-18 | 2012-12-18 | Anti-blocking constant pressure switch of water injection pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220704863 CN203097821U (en) | 2012-12-18 | 2012-12-18 | Anti-blocking constant pressure switch of water injection pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203097821U true CN203097821U (en) | 2013-07-31 |
Family
ID=48849230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220704863 Expired - Lifetime CN203097821U (en) | 2012-12-18 | 2012-12-18 | Anti-blocking constant pressure switch of water injection pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203097821U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979481A (en) * | 2012-12-18 | 2013-03-20 | 中国石油天然气股份有限公司 | Anti-blocking constant pressure switch of water injection pipe column |
| CN103527143A (en) * | 2013-10-11 | 2014-01-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Pitching type fracturing valve |
-
2012
- 2012-12-18 CN CN 201220704863 patent/CN203097821U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979481A (en) * | 2012-12-18 | 2013-03-20 | 中国石油天然气股份有限公司 | Anti-blocking constant pressure switch of water injection pipe column |
| CN102979481B (en) * | 2012-12-18 | 2015-07-08 | 中国石油天然气股份有限公司 | Anti-blocking constant pressure switch of water injection pipe column |
| CN103527143A (en) * | 2013-10-11 | 2014-01-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Pitching type fracturing valve |
| CN103527143B (en) * | 2013-10-11 | 2016-08-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Ball-throwing type fracturing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130731 Effective date of abandoning: 20150708 |
|
| RGAV | Abandon patent right to avoid regrant |