CN205172486U - Level pressure well washing device - Google Patents
Level pressure well washing device Download PDFInfo
- Publication number
- CN205172486U CN205172486U CN201520835871.5U CN201520835871U CN205172486U CN 205172486 U CN205172486 U CN 205172486U CN 201520835871 U CN201520835871 U CN 201520835871U CN 205172486 U CN205172486 U CN 205172486U
- Authority
- CN
- China
- Prior art keywords
- well
- sliding sleeve
- flushing
- urceolus
- blanking plug
- 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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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a level pressure well washing device belongs to oil -field flooding development technical field, the well -flushing valve is included and the formula blanking plug can be dragged for, wherein: the well -flushing valve comprises top connection, sliding sleeve, urceolus, reset spring, and can drag for the formula blanking plug is solid columnar body, and its upper portion is fishing head, the lower part be with each other complex centrum of the back taper facial features of sliding sleeve up end. Utilize the utility model discloses in oil jacket split injection well, realize that the oil jacket divides the notes pipe to annotate positive well -flushing, drive incrustation scale, dirty skin, contamination precipitation more than the packer, avoid stopping up oil reservoir passageway and sand pipe laying post, reduce the accident well or the well workover greatly of well, avoid regular tripping operation petroleum string to examine and seal, reduce the operating cost, stop the well -flushing after the well -flushing is qualified, sliding sleeve return under reset spring's effect of well -flushing valve, radial well -flushing access opening on the shutoff urceolus seals water injection string, and the test carriage is pulled out and to be dragged for the formula blanking plug, closes the test gate, and the water injection returns to normal.
Description
Technical field
The utility model relates to a kind of level pressure well washing apparatus, belongs to water flooding technical field, the especially down-hole kit technical field of water filling zonal injection technology technology.
Background technology
Current water injection through tubing and casing tubing string, be stuck on the interlayer between two target zones by Water well packer, controlled by ground flow, realize oil, the direct water filling of sleeve pipe, have simple to operate, convenient management, the advantage that water filling interval qualification rate is high, but after water injection through tubing and casing well long-term injecting water, the above oil sets annular space of packer certainly will cause the deposition of the foul such as incrustation scale, impurity, easily blocking oil reservoir passage; The dirty skin, the scale that deposit after long-term injecting water, stratum slightly shakes out, easy card packer, and cause the accident well or large well workover; For above-described problem, the measure that routine is avoided risk only has and regularly plays lower tubular column seal inspection, and operating cost certainly will be caused like this to increase, the rate during water filling of polluted reservoir, reduction water injection well.
Patent No. CN2777182Y discloses a kind of sand-proof well-washing valve, and its primary structure comprises top connection main body, outer working tube, annular cone valve, return spring, lower contact composition; Because it needs anti-flushing well that flushing fluid just can be made to back down annular cone valve through the well washing hole of outer working tube, carry out clean-out service; And anti-flushing well is irrealizable in water injection through tubing and casing tubing string, if water injection through tubing and casing tubing string energy anti-flushing well certainly will cause tubing string to lose efficacy.
Utility model content
The purpose of this utility model is the technical barrier solving the impurity such as the oil sets annular space easy sedimentary formation sand of water injection through tubing and casing tubing string and incrustation scale, dirty skin, scale, provides a kind of level pressure well washing apparatus.
The utility model comprises flushing valve and salvagable blanking plug, and wherein: flushing valve is made up of top connection, sliding sleeve, urceolus, back-moving spring, be provided with interior shoulder in the middle part of top connection, top connection is threaded with urceolus; Urceolus has radial well-flushing access opening, urceolus bottom is provided with interior shoulder, is provided with sliding sleeve and back-moving spring successively in the cavity of the urceolus in the middle part of top connection in shoulder and urceolus bottom between shoulder; Sliding sleeve is tubular structure, and upper surface is inverted cone surface, and its internal diameter is less than the internal diameter of the interior shoulder in the middle part of top connection; Salvagable blanking plug is solid cylinder, and its top is fishing head, and bottom is the centrum cooperatively interacted with the inverted cone surface of sliding sleeve upper surface, and the external diameter of centrum is greater than the internal diameter of sliding sleeve, is less than the external diameter of sliding sleeve.
Utilize the utility model in water injection through tubing and casing well, realize water injection through tubing and casing pipe and note positive well-flushing, remove incrustation scale, dirty skin, the contamination precipitation of more than packer, avoid blocking oil reservoir passage and sand pipe laying post, reduce the accident well of well or large well workover; The qualified rear stopping well-flushing of well-flushing, return under the effect of back-moving spring that slides over of flushing valve, radial well-flushing access opening on shutoff urceolus, close water injection string, salvagable blanking plug pulled out by test carriage, closes test strobe, recover normal water filling, without the need to regularly playing lower tubular column seal inspection, extending tubing string period of validity, enhancing productivity.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is further described in detail.
Fig. 1 and Fig. 2 is known, and the utility model comprises flushing valve and salvagable blanking plug, wherein:
Flushing valve is made up of top connection 1, sliding sleeve 2, urceolus 3, back-moving spring 4, is provided with interior shoulder in the middle part of top connection 1, and top connection 1 is threaded with urceolus 3; Urceolus 3 has radial well-flushing access opening 3-1, urceolus 3 bottom is provided with interior shoulder, is provided with sliding sleeve 2 and back-moving spring 4 successively in the cavity of the urceolus 3 in the middle part of top connection 1 in shoulder and urceolus 3 bottom between shoulder; Sliding sleeve 2 is tubular structure, and upper surface is inverted cone surface, and its internal diameter is less than the internal diameter of the interior shoulder in the middle part of top connection.
Salvagable blanking plug 6 is solid cylinder, and its top is fishing head 5, and bottom is the centrum cooperatively interacted with the inverted cone surface of sliding sleeve 2 upper surface, and the external diameter of centrum is greater than the internal diameter of sliding sleeve 2, is less than the external diameter of sliding sleeve 2.
Well-flushing access opening 3-1 on described urceolus 3 is three uniform or four holes.
The external diameter of described salvagable blanking plug 6 bottom centrum is less than the internal diameter of sliding sleeve 2, the outer wall of its underpart centrum is provided with outer shoulder, the lower surface of its outer shoulder is the centrum cooperatively interacted with the inverted cone surface of sliding sleeve 2 upper surface, and the external diameter of outer shoulder is greater than the internal diameter of sliding sleeve 2, is less than the external diameter of sliding sleeve 2.
The conical surface of the outer shoulder of the bottom centrum of described salvagable blanking plug 6 is provided with joint ring 7
Between described urceolus 3 and the bonding surface of sliding sleeve 2, joint ring 2-1 is installed.
During lower water injection through tubing and casing tubing string, between Water well packer top connection and oil pipe, connect flushing valve as shown in Figure 1, by completion tubular column under designing requirement, test the qualified rear normal water filling of envelope injection test.
After water filling certain hour, to the time between well-flushings pre-established, will drop into from well head test strobe by salvagable blanking plug 6 as shown in Figure 2, close test strobe.Salvagable blanking plug 6 relies on the dual-pressure of deadweight and continuation water filling salvagable blanking plug 6 to be pushed into sliding sleeve 2 upper surface of flushing valve, oil pipe pressure-raising 3-5MPa, salvagable blanking plug 6 promotes the descending and Compress Spring 4 of sliding sleeve 2, open the radial well-flushing access opening 3-1 on the urceolus 3 of flushing valve, injection water is made to enter oil jacket annular space, realize water injection through tubing and casing pipe and note positive well-flushing, remove the incrustation scale of more than packer, the contamination precipitations such as dirt skin, avoid blocking oil reservoir passage and sand pipe laying post, reduce the accident well of well or large well workover, avoid regularly playing lower tubular column seal inspection, reduce operating cost, the qualified rear stopping well-flushing of well-flushing, sliding sleeve 2 return under the effect of back-moving spring 4 of flushing valve, the radial well-flushing access opening 3-1 on shutoff urceolus 3, close water injection string, salvagable blanking plug 6 pulled out by test carriage, closes test strobe, recovers normal water filling.
Claims (5)
1. a level pressure well washing apparatus, comprise flushing valve and salvagable blanking plug, it is characterized in that: flushing valve is made up of top connection (1), sliding sleeve (2), urceolus (3), back-moving spring (4), top connection (1) middle part is provided with interior shoulder, and top connection (1) is threaded with urceolus (3); Urceolus (3) has radial well-flushing access opening (3-1), urceolus (3) bottom is provided with interior shoulder, is provided with sliding sleeve (2) and back-moving spring (4) successively in the cavity of the urceolus (3) between the interior shoulder and the interior shoulder of urceolus (3) bottom at top connection (1) middle part; Sliding sleeve (2) is tubular structure, and upper surface is inverted cone surface, and its internal diameter is less than the internal diameter of the interior shoulder at top connection (1) middle part; Salvagable blanking plug (6) is solid cylinder, and its top is fishing head (5), and bottom is the centrum cooperatively interacted with the inverted cone surface of sliding sleeve (2) upper surface, and the external diameter of centrum is greater than the internal diameter of sliding sleeve (2), is less than the external diameter of sliding sleeve (2).
2. level pressure well washing apparatus according to claim 1, is characterized in that: the well-flushing access opening (3-1) on described urceolus (3) is uniform three or four holes.
3. level pressure well washing apparatus according to claim 1 and 2, it is characterized in that: the external diameter of described salvagable blanking plug (6) bottom centrum is less than the internal diameter of sliding sleeve (2), the outer wall of its underpart centrum is provided with outer shoulder, the lower surface of its outer shoulder is the centrum cooperatively interacted with the inverted cone surface of sliding sleeve (2) upper surface, the external diameter of outer shoulder is greater than the internal diameter of sliding sleeve (2), is less than the external diameter of sliding sleeve (2).
4. level pressure well washing apparatus according to claim 1 and 2, is characterized in that: the conical surface of the outer shoulder of the bottom centrum of described salvagable blanking plug (6) is provided with joint ring (7).
5. level pressure well washing apparatus according to claim 1 and 2, is characterized in that: be provided with joint ring (2-1) between described urceolus (3) and the bonding surface of sliding sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520835871.5U CN205172486U (en) | 2015-10-26 | 2015-10-26 | Level pressure well washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520835871.5U CN205172486U (en) | 2015-10-26 | 2015-10-26 | Level pressure well washing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205172486U true CN205172486U (en) | 2016-04-20 |
Family
ID=55736489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520835871.5U Expired - Fee Related CN205172486U (en) | 2015-10-26 | 2015-10-26 | Level pressure well washing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205172486U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593349A (en) * | 2016-12-28 | 2017-04-26 | 中国石油天然气股份有限公司 | Oil pumping well production well completion tubular column capable of being backwashed for plugging releasing and sand prevention |
| CN108386160A (en) * | 2018-01-30 | 2018-08-10 | 中国石油天然气股份有限公司 | The deblocking type sand control pipe structure of screen casing under energy flushing pump |
| CN113803034A (en) * | 2021-09-22 | 2021-12-17 | 西安洛科电子科技股份有限公司 | Intelligent sand prevention backwashing device for separate-layer water injection pipe column and using method thereof |
| CN114109289A (en) * | 2020-08-31 | 2022-03-01 | 中国石油化工股份有限公司 | Oil-water well washes debris collection device |
-
2015
- 2015-10-26 CN CN201520835871.5U patent/CN205172486U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593349A (en) * | 2016-12-28 | 2017-04-26 | 中国石油天然气股份有限公司 | Oil pumping well production well completion tubular column capable of being backwashed for plugging releasing and sand prevention |
| CN106593349B (en) * | 2016-12-28 | 2019-05-07 | 中国石油天然气股份有限公司 | A kind of rod-pumped well productive completion tubing string of back-washable de-plugging sand control |
| CN108386160A (en) * | 2018-01-30 | 2018-08-10 | 中国石油天然气股份有限公司 | The deblocking type sand control pipe structure of screen casing under energy flushing pump |
| CN108386160B (en) * | 2018-01-30 | 2019-12-10 | 中国石油天然气股份有限公司 | Blockage removal type sand prevention pipe column structure capable of flushing lower sieve pipe of pump |
| CN114109289A (en) * | 2020-08-31 | 2022-03-01 | 中国石油化工股份有限公司 | Oil-water well washes debris collection device |
| CN114109289B (en) * | 2020-08-31 | 2024-01-30 | 中国石油化工股份有限公司 | Oil-water well flushing sundry collecting device |
| CN113803034A (en) * | 2021-09-22 | 2021-12-17 | 西安洛科电子科技股份有限公司 | Intelligent sand prevention backwashing device for separate-layer water injection pipe column and using method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20171026 |