CN2584818Y - Sand washing, oil receiving, sealing device for oil well - Google Patents
Sand washing, oil receiving, sealing device for oil well Download PDFInfo
- Publication number
- CN2584818Y CN2584818Y CN 02281188 CN02281188U CN2584818Y CN 2584818 Y CN2584818 Y CN 2584818Y CN 02281188 CN02281188 CN 02281188 CN 02281188 U CN02281188 U CN 02281188U CN 2584818 Y CN2584818 Y CN 2584818Y
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- oil
- sand washing
- main body
- sand
- eccentric
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Abstract
The utility model relates to an oil collecting and leakage plugging device used for washing sand in a sand producing oil well of an oil field. The utility model is composed of a connecting head, a spraying nozzle, a single-flow valve cover, a valve ball, a single-flow valve seat and a main body. Due to the adoption of the structures of an eccentric horn through hole and a side hole, during sand washing operation, a low-pressure zone of a sand washing pipe column is connected with the space of an oil sleeve ring, crude oil in a well tube is carried into a stratum by a sand washing fluid to form oil-water locked plugging, and thereby, the pollution caused by the sand washing to an oil layer and the ground surface is reduced, and the waste of the oil falling on the ground is reduced. The utility model has the advantages of simple structure and convenient operation. The utility model enhances the sand washing effect of a low-pressure oil well and prolongs the production period of the oil well.
Description
Affiliated technical field
The utility model relates to a kind of receipts oil device for plugging that is used for oil field low pressure sand well sand washing.
Background technology
At present, well workover often adopts circulation sand washing method to clear out of the interior sand setting of well, generally be down to the above appropriate location of sand face with the sand washing tubing string, turn on pump is squeezed into flushing liquor from oil pipe then, impact the sand face by bottom sand washing nib, constantly deepening to pump into sand cleaning fluid in the sand washing tubing string, the long-pending sand in the pit shaft is carried to ground.And for the oil field of the middle and later periods of recovering the oil, strata pressure is generally lower, is difficult to constitute circulation sand washing condition, and the long-pending sand that breaks up is with the sand cleaning fluid stratum of bleeding, polluted reservoir not only, and enter pit shaft soon again bringing in, cause repeated sand washing operation.In case the viscous crude in the sleeve pipe is lifted and is reclaimed also very difficultly in the sluicing pond on ground, influences normal water storage sand washing sometimes, also can cause environment pollution.
Summary of the invention
Cause low pressure oil well to repeat to shake out easily and the deficiency of contaminated environment in order to overcome existing sand washing technology, the utility model provides a kind of oil well sand washing to receive oily device for plugging, and this device can reduce the oil layer pollution and the greasy dirt that lands that sand washing causes effectively and dye waste.
The technical scheme that its technical problem that solves the utility model adopts is: this device is a tubular structure, is made up of joint, nozzle, single current valve bonnet, valve ball, single current valve seat and main body.Its structure, assembled relation are as follows: the single current valve seat is placed on the boss of the eccentric side opening vertical section of main body, is placed with valve ball on the single current valve seat, and screw thread links to each other with the eccentric side opening vertical section of main body inner headed face beyond the single current valve bonnet; Nozzle carrier is on the inner conical surface of main body, and the eccentric loudspeaker spout center of circle of nozzle and the main body eccentric through-hole center of circle are on same axis; The pressed joint of upper end of nozzle links to each other with button in internal thread and the main body upper end, tightens to compress nozzle, the sealing of assurance higher-pressure region after putting in place.During the sand washing operation, to receive oily device for plugging top connection and be connected to sand washing tubing string lower end, and with under the sand washing tubing string under the oil well liquid level desired depth, open the surface pump well-flushing, after discharge capacity reached a certain predetermined value, generation low-pressure area below nozzle made and opens under the pressure of ball-and-seat fluid column in pit shaft, crude oil in the pit shaft is taken in sand clean out pipe, and arrives the shaft bottom with sand cleaning fluid.When strata pressure was low, crude oil bled with sand cleaning fluid in the hole on stratum, formed the slug flow of profit, and it is stifled to make leakage property oil reservoir form the profit lock rapidly, increases the stratum back pressure.With the rising of landing surface back pressure, on beginning, sand cleaning fluid returns, the sand setting in the pit shaft is gone out pit shaft, take ground to.With the rising of landing surface back pressure, pump pressure also increases, and when the pressure in the oil pipe was elevated to certain value, negative pressuren zone was flooded by the back pressure in shaft bottom, receives oily device for plugging and stops to suck, and the single current valve is closed, and guarantees normal sand-flushing.
The utility model is owing to adopted eccentric loudspeaker through hole and side opening structure, sand washing tubing string low-pressure area links to each other with pit shaft when making the sand washing operation, the crude oil of pit shaft is brought into the stratum by sand cleaning fluid, and to form the profit lock stifled, reduces oil reservoir and ground pollution that sand washing causes, reduces to land the oil waste.This apparatus structure is simple, and is easy to operate, improves the sand washing effect of low pressure oil well greatly, prolongs the production cycle of oil well, is suitable for and applies.
Description of drawings
An embodiment further specifies the utility model below in conjunction with accompanying drawing.
Accompanying drawing is a sectional structural map of the present utility model.
1. joints among the figure, 2. nozzle, 3. single current valve bonnet, 4. valve ball, 5. single current valve seat, 6. main body.
The specific embodiment
In the drawings, main body (6) becomes the snapping head for tubulose, and it is tubaeform through hole that the interior middle part of pipe one side is provided with eccentric two ends up and down, and opposite side is provided with eccentric side opening, and the vertical section upper end of side opening is provided with internal thread, and the lower end is provided with boss.Nozzle (2) is that a side is provided with the eccentric loudspeaker spout of going up, and opposite side is provided with the disk-shaped structure of tight silk groove.Single current valve bonnet (3) is interior hexagonal hole for the upper end has, and has uniform through hole all around, and the bottom has externally threaded cylindrical structural.Single current valve seat (5) is for having the column structure of boring block hole.Joint (1) upper end is provided with the internal thread that matches with the sand washing tubing string, and the lower end is provided with the external screw thread that matches with main body (6).
Claims (3)
1, a kind of oil well sand washing is received oily device for plugging, form by joint (1), nozzle (2), single current valve bonnet (3), valve ball (4), single current valve seat (5) and main body (6), it is characterized in that: single current valve seat (5) is placed on the boss of the eccentric side opening vertical section of main body (6), be placed with valve ball (4) on ball-and-seat (5) seat, single current valve bonnet (3) links to each other with the eccentric side opening vertical section of main body (6) inner headed face with external screw thread; Nozzle (2) links to each other with main body (6) upper end inner headed face with internal thread, and nozzle (2) the eccentric loudspeaker spout center of circle and main body (6) the eccentric through-hole center of circle are on same axis; Top connection (1) is equipped with in nozzle (2) upper end, and top connection (1) links to each other with main body (6) upper end inner headed face with internal thread.
2, oil well sand washing according to claim 1 is received oily device for plugging, it is characterized in that, main body (6) becomes the snapping head for tubulose, it is tubaeform through hole that the interior middle part of pipe one side is provided with eccentric two ends up and down, opposite side is provided with eccentric side opening, and the vertical section upper end of side opening is provided with internal thread, and the lower end is provided with boss.
3, oil well sand washing according to claim 1 is received oily device for plugging, it is characterized in that, nozzle (2) is that a side is provided with the eccentric loudspeaker spout of going up, and opposite side is provided with the disk-shaped structure of tight silk groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02281188 CN2584818Y (en) | 2002-11-14 | 2002-11-14 | Sand washing, oil receiving, sealing device for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02281188 CN2584818Y (en) | 2002-11-14 | 2002-11-14 | Sand washing, oil receiving, sealing device for oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2584818Y true CN2584818Y (en) | 2003-11-05 |
Family
ID=33743657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02281188 Expired - Fee Related CN2584818Y (en) | 2002-11-14 | 2002-11-14 | Sand washing, oil receiving, sealing device for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2584818Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748990B (en) * | 2009-12-11 | 2012-09-19 | 东营百华石油技术开发有限公司 | Releasing packer well-washing device |
| CN104074498A (en) * | 2013-03-25 | 2014-10-01 | 中国石油化工股份有限公司 | Eccentric ball injection diverter switch used for heavy oil thermal recovery process tubing string |
| CN104120987A (en) * | 2014-07-21 | 2014-10-29 | 中国石油天然气股份有限公司 | Oil well positive and negative sand washing nozzle |
-
2002
- 2002-11-14 CN CN 02281188 patent/CN2584818Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748990B (en) * | 2009-12-11 | 2012-09-19 | 东营百华石油技术开发有限公司 | Releasing packer well-washing device |
| CN104074498A (en) * | 2013-03-25 | 2014-10-01 | 中国石油化工股份有限公司 | Eccentric ball injection diverter switch used for heavy oil thermal recovery process tubing string |
| CN104120987A (en) * | 2014-07-21 | 2014-10-29 | 中国石油天然气股份有限公司 | Oil well positive and negative sand washing nozzle |
| CN104120987B (en) * | 2014-07-21 | 2017-01-25 | 中国石油天然气股份有限公司 | Oil well positive and negative sand washing nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |