CN201460772U - Self-sealing sand-flushing device - Google Patents
Self-sealing sand-flushing device Download PDFInfo
- Publication number
- CN201460772U CN201460772U CN2009200252897U CN200920025289U CN201460772U CN 201460772 U CN201460772 U CN 201460772U CN 2009200252897 U CN2009200252897 U CN 2009200252897U CN 200920025289 U CN200920025289 U CN 200920025289U CN 201460772 U CN201460772 U CN 201460772U
- Authority
- CN
- China
- Prior art keywords
- leather cup
- self
- flushing device
- tubing string
- sand
- 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
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Abstract
The utility model relates to a self-sealing sand-flushing device which comprises an upper sealing component, an intermediate connecting pipe column and a lower sealing component and is characterized in that the upper sealing component comprises an upper exhaust joint (2), a lifting nipple (1), a locking sleeve (3), a liner pipe (6), a leather cup (4) and a leather cup pressure cap (5), wherein the lifting nipple (1) is connected with the upper end of the upper exhaust joint (2), the locking sleeve (3) and the liner pipe (6) are arranged outside the upper exhaust joint (2) in sequence, and the leather cup (4) is arranged outside the liner pipe (6); the intermediate connecting pipe column comprises an inner oil pipe column (10), a connector (8), an external collar (11) and an outer oil pipe column (12) which are arranged and connected outside the inner oil pipe column (10) in sequence, wherein the upper end of the inner oil pipe column (10) is connected with the upper exhaust joint (2), the lower end of the inner oil pipe column (10) is connected with a seal plug (13), and the lower end of the outer oil pipe column (12) is connected with a lower outlet; the lower sealing component comprises a lower exhaust joint (15), a leather cup pressure cap (5), a leather cup (4), an air liner pipe (6), a screen pipe (16) and a lower joint (17) which are arranged on and connected to the lower exhaust joint (15) in sequence, wherein the upper part of the lower exhaust joint (15) is matched with the seal plug (13), and the lower end of the lower exhaust joint (15) is connected with the lower part of a sand-flushing pipe (18).
Description
One, technical field
The utility model relates to oil and adopts the underground work process tool, particularly a kind of self-sealing sand-flushing device.
Two, background technology
Existing well-flushing mode is directly to wash by with flushing fluid the down-hole being deposited foul by oil pipe, and flushing fluid returns ground by oil casing annular space.This blank tubing well-flushing mode exists following shortcoming or deficiency: 1. owing to oil reservoir is not protected, flushing fluid carries and washes out foul in a large number and enter oil reservoir in returning the way, thereby oil reservoir is polluted, and serious meeting causes oil layer blocking, influences output.2. the impurity that enters oil reservoir also can to pumping unit cause as: pump efficiency is low, infringements such as card is stifled, corrosion.
Three, summary of the invention
The purpose of this utility model provides a kind of self-sealing sand-flushing device that can only prevent that oil reservoir pollutes; the structure that when adopting sand-flushing flushing fluid and oil reservoir is separated; not only oil reservoir is played a protective role the shortcoming or the deficiency that also overcome or avoid existing in the above-mentioned prior art.
Self-sealing sand-flushing device described in the utility model comprises upper seal, intermediate connection tube post and lower seal.Described upper seal comprises the lifting sub of discharging joint and upper end connection thereof, the outside lock sleeve of installing in turn, the outer leather cup of installing of bushing pipe and bushing pipe, the described intermediate connection tube post of leather cup pressure cap comprises that the inner tubing string and the portion of locating thereof install the connector of connection in turn, outer box cupling, outer tubing string, the inner tubing string upper end is connected with last discharge joint, the lower end is connected with sealing plug, the outer tubing string lower end connects in succession with following discharge, described lower seal comprises discharge joint and the upward suitable leather cup pressure cap that connects of installing thereof down, leather cup, the wind bushing pipe, screen casing and lower contact, following discharge joint matches with sealing plug in the top, is connected in the lower end with under the sand clean out pipe.
Wherein, be laid with at least on the described circumference of go up discharging joint one with inner tubing string and outer tubing string between the overcurrent duct that is connected of annular space.Described annular space of discharge joint down and the overcurrent duct that screen casing is connected.Be laid with at least one vertical overcurrent duct on the circumference of described lower contact.The leather cup of described upper seal is the mounting structure that opening makes progress.Described lower seal body leather cup is the mounting structure that Open Side Down.
The utility model has following advantage compared with prior art:
1, the protection oil reservoir is not contaminated;
2, help the facility of pumping, the efficient height.
Four, description of drawings
Fig. 1 is a kind of example structure schematic diagram of the utility model
Five, the specific embodiment:
Consult accompanying drawing, a kind of self-sealing sand-flushing device, comprise upper seal, intermediate connection tube post and lower seal, upper seal comprises the lifting sub 1 of discharging joint 2 and upper end connection thereof, the outside lock sleeve of installing in turn 3, bushing pipe 6 and the bushing pipe 6 outer leather cups of installing 4, leather cup pressure cap 5 described intermediate connection tube posts comprise that the inner tubing string 10 and the portion of locating thereof install the connector 8 of connection in turn, outer box cupling 11, outer tubing string 12, inner tubing string 10 upper ends are connected with last discharge joint 2, the lower end is connected with sealing plug 13, outer tubing string 12 lower ends connect in succession with following discharge. and lower seal comprises discharge joint 15 and the upward suitable leather cup pressure cap 5 that is connected of installing thereof down, leather cup 4, wind bushing pipe 6, screen casing 16 and lower contact 17, following discharge joint matches with sealing plug 13 in 15 tops, is connected for 18 times with sand clean out pipe in the lower end.
At least be laid with on the circumference of last discharge joint 2 one with inner tubing string 10 and outer tubing string 12 between the overcurrent duct 19 that is connected of annular space.The overcurrent duct 19 that the annular space of following discharge joint 15 and screen casing are connected.Be laid with at least one vertical overcurrent duct 19 on the circumference of lower contact 17.The mounting structure that the leather cup 4 of upper seal makes progress for opening.Lower seal body leather cup 4 is the mounting structure that Open Side Down.There is connecting bolt 7 connector 8 upper ends.Connect by interior box cupling 9 lines between the inner tubing string 10.Seal 14 is installed on the sealing plug 13.
Claims (6)
1. self-sealing sand-flushing device, comprise upper seal, intermediate connection tube post and lower seal, it is characterized in that described upper seal comprises the lifting sub (1) of discharging joint (2) and upper end connection thereof, the outside lock sleeve of installing in turn (3), the outer leather cup of installing (4) of bushing pipe (6) and bushing pipe (6), leather cup pressure cap (5), described intermediate connection tube post comprises inner tubing string (10) and the outside connector (8) that connects of installing in turn thereof, outer box cupling (11), outer tubing string (12), inner tubing string (10) upper end is connected with last discharge joint (2), the lower end is connected with sealing plug (13), outer tubing string (12) lower end is connected with following discharge joint, described lower seal body comprise down discharge joint (15) and on the leather cup pressure cap (5) that connects is installed in turn, leather cup (4), internal lining pipe (6), screen casing (16) and lower contact (17), match with sealing plug (13) in following discharge joint (15) top, be connected with sand clean out pipe (18) in the lower end.
2. self-sealing sand-flushing device according to claim 1, it is characterized in that being laid with at least on the described circumference of go up discharging joint (2) one with inner tubing string (10) and outer tubing string (12) between the overcurrent duct (19) that is connected of annular space.
3. self-sealing sand-flushing device according to claim 1 is characterized in that the annular space of described discharge joint (15) down constitutes the overcurrent duct (19) that is connected with screen casing (16).
4. self-sealing sand-flushing device according to claim 1 is characterized in that being laid with at least one vertical overcurrent duct (19) on the circumference of described lower contact (17).
5. self-sealing sand-flushing device according to claim 1 is characterized in that the mounting structure that the leather cup (4) of described upper seal makes progress for opening.
6. self-sealing sand-flushing device according to claim 1, the leather cup (4) that it is characterized in that described lower seal body is the mounting structure that Open Side Down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200252897U CN201460772U (en) | 2009-05-18 | 2009-05-18 | Self-sealing sand-flushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200252897U CN201460772U (en) | 2009-05-18 | 2009-05-18 | Self-sealing sand-flushing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201460772U true CN201460772U (en) | 2010-05-12 |
Family
ID=42388126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200252897U Expired - Fee Related CN201460772U (en) | 2009-05-18 | 2009-05-18 | Self-sealing sand-flushing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201460772U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295250A (en) * | 2014-10-10 | 2015-01-21 | 中国海洋石油总公司 | Screen annulus sand-washing tubular column |
| CN104453858A (en) * | 2013-09-13 | 2015-03-25 | 中国石油天然气股份有限公司 | Well water level monitoring technique pipe for deep well water sources |
| CN107725008A (en) * | 2017-09-05 | 2018-02-23 | 中国石化江汉油田分公司江汉采油厂 | It is a kind of to integrate the anti-blocking screen casing tubing string to recover the oil with sand washing |
-
2009
- 2009-05-18 CN CN2009200252897U patent/CN201460772U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453858A (en) * | 2013-09-13 | 2015-03-25 | 中国石油天然气股份有限公司 | Well water level monitoring technique pipe for deep well water sources |
| CN104295250A (en) * | 2014-10-10 | 2015-01-21 | 中国海洋石油总公司 | Screen annulus sand-washing tubular column |
| CN107725008A (en) * | 2017-09-05 | 2018-02-23 | 中国石化江汉油田分公司江汉采油厂 | It is a kind of to integrate the anti-blocking screen casing tubing string to recover the oil with sand washing |
| CN107725008B (en) * | 2017-09-05 | 2024-03-08 | 中国石油化工股份有限公司 | Anti-blocking sieve tube column integrating oil extraction and sand washing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20120518 |