CN202926246U - Long-tail-pipe casing-corrosion-preventing well flushing protection device - Google Patents
Long-tail-pipe casing-corrosion-preventing well flushing protection device Download PDFInfo
- Publication number
- CN202926246U CN202926246U CN 201220650010 CN201220650010U CN202926246U CN 202926246 U CN202926246 U CN 202926246U CN 201220650010 CN201220650010 CN 201220650010 CN 201220650010 U CN201220650010 U CN 201220650010U CN 202926246 U CN202926246 U CN 202926246U
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- Prior art keywords
- tap
- diverter
- joint
- isocon
- pipe
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- Withdrawn - After Issue
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Abstract
The utility model relates to a long-tail-pipe casing-corrosion-preventing well flushing protection device. A cavity is arranged in an upper diverter joint. A valve ball is placed in the cavity. A valve seat is installed in the upper diverter joint. The upper part of a diverter pipe is connected with the lower part of the upper diverter joint through a female thread. The upper end surface of the diverter pipe presses against the lower end surface of the valve seat. A plug is connected with the upper diverter joint. The upper diverter joint, a packer and a lower diverter joint are sequentially connected. The lower part of the diverter pipe is inserted into the inner hole of the lower diverter joint. A sealing ring is installed between the diverter pipe and the lower diverter joint. A lateral outlet is arranged in the upper diverter joint. An upper vertical flow passage is arranged on the upper diverter joint. An annular passage is formed between the diverter pipe and the packer. A lateral inlet is arranged in the lower diverter joint. A lower vertical flow passage is arranged on the lower diverter joint. The long-tail-pipe casing-corrosion-preventing well flushing protection device can be matched with a long-tail-pipe casing-corrosion-preventing sucker rod string in use, a casing can be prevented from being corroded and an oil layer can also be prevented from being contaminated during well flushing.
Description
Technical field
The utility model is the Underwell oil production tool that petroleum industry is used, and is the anti-casing corrosion Well-cleaning protection device of a kind of long-tail pipe.
Background technology
Current pumping pipe string be generally by the oil pumping pump intake on oil reservoir, during oil pumping, well liquid flow in sleeve pipe from stratum, then, upwards to moving, through the oil pumping pump intake, flows in oil well pump.Well liquid is in flowing to this section distance of oil pumping pump intake, mobile well liquid will contact with internal surface of sleeve pipe, owing to containing certain water yield in well liquid, be dissolved with the corrosivity mineral in water, can produce corrosion to this section sleeve pipe flow through, in the application life of reentrant bushing, affect oil field development production, makes oil field produce heavy economic losses.In order to address this problem, Oilfield using the anti-casing corrosion pumping pipe string of long-tail pipe.In viscous crude, wax deposition, dark pumpingh well are produced, often need that oil pipe on oil well pump and oil well pump is carried out to the hot water circuit well-flushing and just can maintain oil well and normally produce.In the anti-casing corrosion pumping pipe string of long-tail pipe, sleeve pipe and oil reservoir are UNICOMs, and well-flushing pressure is generally all very high, and oil reservoir is produced than high back pressure, and well-flushing water easily enters oil reservoir, on the one hand water-sensitive reservoir is damaged, and kills oil reservoir, makes oil reservoir not fuel-displaced; Increase on the other hand the well-flushing water consumption, duration of well flushing is long, increases manpower and materials.Therefore, this anti-casing corrosion pumping pipe string can not support the use with existing Flushing tubular column.
Summary of the invention
The purpose of this utility model is the anti-casing corrosion Well-cleaning protection device of a kind of long-tail pipe of design, while supporting the use with the anti-casing corrosion pumping pipe string of long-tail pipe, can prevent that flushing fluid from entering stratum, avoids oil layer pollution.
The purpose of this utility model is achieved in that and comprises plug, upper tap, valve ball, valve seat, isocon, packer, sealing ring, lower tap, in upper tap, cavity is arranged, place valve ball in cavity, valve seat is arranged in tap, isocon top is connected with upper tap lower internal thread, the lower surface of valve seat is withstood in the isocon upper surface, the upper surface of valve seat is pressed on the inner circular bead of tap, valve ball falls to being sitting on the upper port of valve seat, the lower thread of plug is connected with the upper internal threaded of upper tap, the lower external thread of upper tap is threaded with the top of packer, the packer bottom is connected with lower tap top, insert in lower tap endoporus the isocon bottom, between isocon and lower tap, sealing ring is installed, on upper tap, side outlet is arranged, upper vertical-sprue is arranged on upper tap, form circular passage between isocon and packer, on lower tap, the side direction import is arranged, on lower tap, lower vertical-sprue is arranged, side outlet communicates with cavity, plug is solid, the side direction import, endoporus, isocon, valve seat communicates, the bottom of endoporus is obstructed, upper vertical-sprue, circular passage, lower vertical-sprue communicates.
The beneficial effects of the utility model are: after the packer sealing sleeve pipe, flushing fluid can not enter stratum by valve ball, the well liquid of oil reservoir can pass through in the pump of lower vertical-sprue, circular passage, the anti-casing corrosion pumping pipe string of upper vertical-sprue inflow, therefore, the utility model can support the use with the anti-casing corrosion pumping pipe string of long-tail pipe, can prevent casing corrosion, also can prevent that when well-flushing oil reservoir is contaminated, there is significant economic benefit.
The accompanying drawing explanation
Fig. 1 is the structure chart of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
Embodiment of the present utility model comprises plug 1, upper tap 2, valve ball 4, valve seat 5, isocon 6, packer 7, sealing ring 8, lower tap 9, in upper tap 2, cavity 11 is arranged, the interior placement valve ball 4 of cavity 11, valve seat 5 is arranged in tap 2, isocon 6 tops are connected with upper tap 2 lower internal thread, the lower surface that valve seat 5 is withstood in isocon 6 upper surfaces, the upper surface of valve seat 5 is pressed on the inner circular bead of tap 2, valve ball 4 falls to being sitting on the upper port of valve seat 5, the lower thread of plug 1 is connected with the upper internal threaded of upper tap 2, valve ball 4 is opened under certain pressure, the lower external thread of upper tap 2 is threaded with the top of packer 7, packer 7 bottoms are connected with lower tap 9 tops, 15 li of the endoporus of the lower tap 9 of isocon 6 bottoms insertion, sealing ring 8 is installed between isocon 6 and lower tap 9, for sealing the gap between isocon 6 and lower tap 9, on upper tap 2, side outlet 3 is arranged, upper vertical-sprue 12 is arranged on upper tap 2, form circular passage 13 between isocon 6 and packer 7, on lower tap 9, side direction import 10 is arranged, lower vertical-sprue 14 is arranged on lower tap 9, side outlet 3 communicates with cavity 11, plug 1 is solid, side direction import 10, endoporus 15, isocon 6, valve seat 5 communicates, the bottom of endoporus 15 is obstructed, upper vertical-sprue 12, circular passage 13, lower vertical-sprue 14 communicates.
The utility model is connected under the oil well pump of the anti-casing corrosion pumping pipe string of long-tail pipe; while pumping after packer setting; oil reservoir flows into the interior oil water mixture of sleeve pipe to dirty; after tail pipe from vertical-sprue, circular passage, upper vertical-sprue flow in the pump of anti-casing corrosion pumping pipe string and be drawn out of; the crude oil of separating is opened valve ball through side direction import 10, endoporus 15, isocon 6, valve seat 5 and is flow in the sleeve pipe on packer from side outlet 3, and sleeve pipe is carried out to anti-corrosion protection.During well-flushing, flushing fluid is squeezed in sleeve pipe, under the valve ball effect, can not enter oil reservoir from side direction import 10, and oil reservoir is protected not contaminated.
Claims (1)
1. a long-tail pipe is prevented the casing corrosion Well-cleaning protection device, it is characterized in that: comprise plug (1), upper tap (2), valve ball (4), valve seat (5), isocon (6), packer (7), sealing ring (8), lower tap (9), cavity (11) is arranged in upper tap (2), place valve ball (4) in cavity (11), valve seat (5) is arranged in tap (2), isocon (6) top is connected with upper tap (2) lower internal thread, the lower surface of valve seat (5) is withstood in isocon (6) upper surface, the upper surface of valve seat (5) is pressed on the inner circular bead of tap (2), valve ball (4) falls to being sitting on the upper port of valve seat (5), the lower thread of plug (1) is connected with the upper internal threaded of upper tap (2), the lower external thread of upper tap (2) is threaded with the top of packer (7), packer (7) bottom is connected with lower tap (9) top, it is inner that lower tap (9) endoporus (15) is inserted in isocon (6) bottom, between isocon (6) and lower tap (9), sealing ring (8) is installed, side outlet (3) is arranged on upper tap (2), upper vertical-sprue (12) is arranged on upper tap (2), form circular passage (13) between isocon (6) and packer (7), side direction import (10) is arranged on lower tap (9), lower vertical-sprue (14) is arranged on lower tap (9), side outlet (3) communicates with cavity (11), plug (1) is solid, side direction import (10), endoporus (15), isocon (6), valve seat (5) communicates, the bottom of endoporus (15) is obstructed, upper vertical-sprue (12), circular passage (13), lower vertical-sprue (14) communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220650010 CN202926246U (en) | 2012-12-02 | 2012-12-02 | Long-tail-pipe casing-corrosion-preventing well flushing protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220650010 CN202926246U (en) | 2012-12-02 | 2012-12-02 | Long-tail-pipe casing-corrosion-preventing well flushing protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926246U true CN202926246U (en) | 2013-05-08 |
Family
ID=48216219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220650010 Withdrawn - After Issue CN202926246U (en) | 2012-12-02 | 2012-12-02 | Long-tail-pipe casing-corrosion-preventing well flushing protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926246U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926678A (en) * | 2012-12-02 | 2013-02-13 | 中国石油化工股份有限公司 | Long-tail-pipe well washing protector for preventing corrosion of casing |
-
2012
- 2012-12-02 CN CN 201220650010 patent/CN202926246U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926678A (en) * | 2012-12-02 | 2013-02-13 | 中国石油化工股份有限公司 | Long-tail-pipe well washing protector for preventing corrosion of casing |
| CN102926678B (en) * | 2012-12-02 | 2017-08-25 | 中国石油化工股份有限公司 | The long anti-casing corrosion Well-cleaning protection device of tail pipe |
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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: 20130508 Effective date of abandoning: 20170825 |
|
| AV01 | Patent right actively abandoned |