CN203008884U - Downhole oil-water separation column for oil gas field development - Google Patents
Downhole oil-water separation column for oil gas field development Download PDFInfo
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- CN203008884U CN203008884U CN 201320015677 CN201320015677U CN203008884U CN 203008884 U CN203008884 U CN 203008884U CN 201320015677 CN201320015677 CN 201320015677 CN 201320015677 U CN201320015677 U CN 201320015677U CN 203008884 U CN203008884 U CN 203008884U
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Abstract
The utility model relates to a downhole oil-water separation column for oil gas field development, and mainly aims at solving the problem that the water content of produced fluid of an oil well is overhigh. The downhole oil-water separation column is characterized in that a central pipe (4) is fixed between an upper oil pipe joint (1) and a lower tail pipe joint (7); a plurality of settling separation barrels (3) are fixed outside the central pipe (4) at intervals, and an oil inlet (2) is formed in the upper edge part of the central pipe (4) corresponding to the settling separation barrels; a netty oil collecting hood (5) is fixed on the central pipe (4) and is positioned under the oil inlet (2), and the oil collecting hood (5) takes the shape of an inverted frustum; and a centering device (6) is also fixed at the middle part of the central pipe (4). The downhole oil-water separation column has the advantages of simple structure, easiness in installation and lower production cost, can greatly complete oil-water downhole separation, and can realize economic and effective exploitation of high-water-containing wells.
Description
Technical field
The utility model relates to a kind of down-hole string that is applied in the oil-gas field development field.
Background technology
Domestic most of oil fields all have been in the intermediary and later stages of exploitation at present, owing to constantly replenishing the deficit on stratum by water filling, cause the high water-cut well in oil field more and more, even having reached has many moisture content up to 98% in these wells, be only to have 2% to be oil in the oil well stoste of extraction, all the other are water entirely.And a large amount of energy consumptions is being carried out in lifting this water of 98%, and the re-injection of also will consuming energy afterwards can't realize exploiting cost-effectively.
Summary of the invention
In order to solve the technical problem of mentioning in background technology, the utility model provides a kind of downhole oil-water separation tubing string for oil-gas field development, this kind downhole oil-water separation tubular column structure is simple, be easy to install, and cost of production is lower, separate the down-hole that can be good at completing oil, water, can realize the cost-effective exploitation of high water-cut well.
The technical solution of the utility model is: this kind is used for the downhole oil-water separation tubing string of oil-gas field development, comprises oil pipe top connection and tail pipe lower contact, and its unique distinction is: be fixed with a central tube between described oil pipe top connection and tail pipe lower contact; The interval is fixed with some sedimentation separation cylinders outside described central tube, have an oil-in corresponding to the upper of sedimentation separation cylinder along part on central tube, be positioned on described central tube described oil-in below be fixed with netted oil pooling hood, described oil pooling hood is inverted frustum shape; Middle part on central tube also is fixed with a centralizer.
The utlity model has following beneficial effect: this kind tubing string is placed on the shaft bottom, corresponding different oil reservoir seals with packer, the production fluid of oil reservoir will flow in the sedimentation separation cylinder after by well-case perforating, because oil ratio water is light, oil will be gradually accumulated on oil pooling hood, and water meeting natural sedimentation is in the cylinder bottom.During greater than the pressure in central tube, oil pooling hood oils and will flow in central tube by oil-in, thereby is extracted up by oil well pump when the pressure of oil collecting zone.In addition, in improvement project, one is inspired confidence in contain the sand filter screen and be fixed on the oil-in place, pass through by refusing water because this kind screen cloth has the oil of permission, therefore, can be so that the separating effect of profit be better.This kind of downhole oil-water separation tubular column structure is simple, be easy to install, and cost of production is lower, and separate the down-hole that can be good at completing oil, water, can realize the cost-effective exploitation of high water-cut well.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
1-oil pipe top connection in figure, 2-oil-in, 3-sedimentation separation cylinder, 4-central tube, 5-oil pooling hood, 6-centralizer, the lower contact of 7-tail pipe.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this kind is used for the downhole oil-water separation tubing string of oil-gas field development, comprises oil pipe top connection 1 and tail pipe lower contact 7, and its unique distinction is: be fixed with a central tube 4 between described oil pipe top connection 1 and tail pipe lower contact 7; Be fixed with some sedimentation separation cylinders 3 at described central tube 4 outer interval, have an oil-in 2 corresponding to the upper of sedimentation separation cylinder along part on central tube 4, be positioned on described central tube 4 described oil-in 2 below be fixed with netted oil pooling hood 5, described oil pooling hood 5 is inverted frustum shape; Middle part on central tube 4 also is fixed with a centralizer 6.
In addition, can obtain following prioritization scheme on above scheme basis, namely be fixed with one and have and throw inspiring confidence in of oily block-water performance and contain the sand filter screen on described oil-in 2.
During use, tubing string is connected, plug, tail pipe is fixed in the tail pipe lower contact, adopt afterwards the oil pipe back-off sub to discharge, then by packer packing every.The production fluid of oil reservoir will flow in the sedimentation separation cylinder after by well-case perforating, and because oil ratio water is light, oil will be gradually accumulated on oil pooling hood, and water can natural sedimentation in the cylinder bottom.
Claims (2)
1. a downhole oil-water separation tubing string that is used for oil-gas field development, comprise oil pipe top connection (1) and tail pipe lower contact (7), it is characterized in that: be fixed with a central tube (4) between described oil pipe top connection (1) and tail pipe lower contact (7); The interval is fixed with some sedimentation separation cylinders (3) outside described central tube (4), have an oil-in (2) in the upper upper edge part corresponding to the sedimentation separation cylinder of central tube (4), the below that is positioned at described oil-in (2) on described central tube (4) is fixed with netted oil pooling hood (5), and described oil pooling hood (5) is inverted frustum shape; Middle part on central tube (4) also is fixed with a centralizer (6).
2. a kind of downhole oil-water separation tubing string for oil-gas field development according to claim 1, is characterized in that: be fixed with one and inspire confidence in Sheng sand filter screen on described oil-in (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015677 CN203008884U (en) | 2013-01-12 | 2013-01-12 | Downhole oil-water separation column for oil gas field development |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015677 CN203008884U (en) | 2013-01-12 | 2013-01-12 | Downhole oil-water separation column for oil gas field development |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203008884U true CN203008884U (en) | 2013-06-19 |
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ID=48600491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320015677 Expired - Fee Related CN203008884U (en) | 2013-01-12 | 2013-01-12 | Downhole oil-water separation column for oil gas field development |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203008884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240194A (en) * | 2020-11-17 | 2021-01-19 | 东北石油大学 | Multi-stage oil-water separation and same-well injection-production method in horizontal shaft |
-
2013
- 2013-01-12 CN CN 201320015677 patent/CN203008884U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240194A (en) * | 2020-11-17 | 2021-01-19 | 东北石油大学 | Multi-stage oil-water separation and same-well injection-production method in horizontal shaft |
| CN112240194B (en) * | 2020-11-17 | 2022-07-19 | 东北石油大学 | Multi-stage oil-water separation and same-well injection-production method in horizontal shaft |
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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: 20130619 Termination date: 20140112 |