CN201050355Y - Polymer injection well eccentric distributor - Google Patents
Polymer injection well eccentric distributor Download PDFInfo
- Publication number
- CN201050355Y CN201050355Y CNU2007201531431U CN200720153143U CN201050355Y CN 201050355 Y CN201050355 Y CN 201050355Y CN U2007201531431 U CNU2007201531431 U CN U2007201531431U CN 200720153143 U CN200720153143 U CN 200720153143U CN 201050355 Y CN201050355 Y CN 201050355Y
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- eccentric
- allocation device
- injection
- injection allocation
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Abstract
An eccentric injection distributor of polymer injection wells for the polymer injection wells is primarily to resolve the issue that under the prior conventional oil field separate layer injection technology, the implementation of polymer multi-layer injection and the injection profile test is difficult to achieve, which is characterized in that the middle of the eccentric injection distributor body (5) is opened with a flow test channel (15) and the bottom is opened with a conical diffusion partial hole (16). A centralizing body (3) is fixed on the upper end of the eccentric injection distributor body (5) opened with an installation channel (14) of eccentric plug. The upper end opening of the channel is in the same direction as that of the centralizing body (3). The side of the installation channel (14) of eccentric plug is opened with a liquid hole (13), and the bottom is communicated with the conical diffusion partial hole (16) on the eccentric injection distributor body (5). After the tool is combined with the plug, the injection with more than three layers can be achieved and the multi layer injection profile test can also be proceeded. Therefore, the utility model has the characteristics of timely prepare with seal test, and the tools can be used repeatedly.
Description
Technical field:
The utility model relates to a kind of instrument of using when polymer displacement of reservoir oil is carried out in the oil field, especially relates to a kind of eccentric injection allocation instrument that is used on the poly-drive injection well.
Background technology:
The oil field enters the high water-cut development later stage, for further improving recovery ratio, has begun extensively to adopt the mode of polymer displacement of reservoir oil to exploit for the third time at present.In the process of finishing the work, find; though poly-at present drive injection well multi-zone flow regulating adopts water injection through tubing and casing and two-tube dispensing can realize two layers of dispensing; but be subjected to the restriction of separate injection interval more than three layers, even the casing protection function is arranged, injection profile still can't be tested at present.In addition, also has a kind of method by annular relief groove dispensing, though can realize the multi-section multi-layer layering under this pattern injects, but the allotment that but can't realize full well multilayer different flow is injected, make injection profile still can't test at present, and change quite difficulty of mouthpiece pulling under this pattern.Divide at present poly-drive injection well ratio more than three layers to account for oil reservoir and divide more than 1/3rd of layered scheme, therefore find and a kind ofly can either realize dispensing more than three layers, can realize that again the method for multilayer injection profile test has become the urgent need of oil field development.
The utility model content:
In order to solve under the dispensing technology of existing conventional oil field, be difficult to realize the poly-problem of driving depositing and carrying out the injection profile test, the utility model provides a kind of poly-drive injection well eccentric injection allocation device, can realize dispensing more than three layers smoothly after existing blanking plug is used on eccentric injection allocation device of the poly-drive injection well of this kind and the oil field, and can carry out the test of multilayer injection profile, have the advantages that allotment is timely, envelope is tested in realization and instrument can reuse.
The technical solution of the utility model is: the eccentric injection allocation device of the poly-drive injection well of this kind, comprise top connection, seating nipple, centralizer body, eccentric injection allocation device main body, adapter sleeve, lower contact, wherein top connection, seating nipple, eccentric injection allocation device main body, adapter sleeve, lower contact connect in turn by screw thread each other, and the junction is by seal with elastometic washer.In the middle of described eccentric injection allocation device main body, have liquid stream, test channel, the bottom has an inclined to one side hole of tapered diffusion, centralizer body is fixed in eccentric injection allocation device main body upper end, on described eccentric injection allocation device main body, have an eccentric blanking plug duct is installed, the upper end open in this duct and the opening of centralizer body are equidirectional, the side that described eccentric blanking plug is installed the duct has fluid hole, and its bottom communicates with the inclined to one side hole of tapered diffusion on the eccentric injection allocation device main body.In addition, for preventing blanking plug disturbance under the effect of liquid stream, in described adapter sleeve, the lower end that is positioned at eccentric injection allocation device main body is equipped with a fixed support, have a blanking plug fixing hole on it, be fixed with the guiding nib by hold-down screw in described lower contact, described blanking plug fixing hole, guiding nib and described eccentric blanking plug are installed the duct and all are positioned on the same axis.
The utlity model has following beneficial effect: owing to take such scheme, can with throw in catcher corresponding blanking plug be dropped into the eccentric blanking plug of eccentric injection allocation device on ground installs in the duct, after seat completion mouth has connected ground flow, injection of polymer solution in well, liquid enters the stratum along eccentric injection allocation device fluid hole, realizes the layering injection under the hierarchical control of packer.When carrying out flow allocating, the blanking plug that adopts throw in catcher to gather again to drive on the eccentric injection allocation device is pulled out, again drop into behind the blanking plug that more renews in the eccentric injection allocation device of target zone, can realize control thus to downhole flow, repeat above-mentioned action successively, just can realize the allotment of full well multilayer different flow, and in this instrument, central liquid stream, test channel are provided, have made and use the test that conventional dropping-fishing test technology just can be finished the multilayer injection profile.In addition, use this instrument after, the viscosity loss that injects solution is little, can realize anti-flushing well.
Description of drawings:
Fig. 1 is a structure sectional view of the present utility model.
1-top connection among the figure, 2-seating nipple, 3-centralizer body, the 4-trip bolt, the eccentric injection allocation device of 5-main body, 6-rubber ring, 7-adapter sleeve, 8-fixed support, the 9-nib that leads, the 10-hold-down screw, 11-lower contact, 12-blanking plug fixing hole, the 13-fluid hole, the 14-blanking plug is installed the duct, 15-liquid stream, test channel, the inclined to one side hole of the tapered diffusion of 16-.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, the eccentric injection allocation device of the poly-drive injection well of this kind, comprise top connection 1, seating nipple 2, centralizer body 3, eccentric injection allocation device main body 5, adapter sleeve 7, lower contact 11, wherein said top connection 1, seating nipple 2, eccentric injection allocation device main body 5, adapter sleeve 7, lower contact 11 connect in turn by screw thread each other, and the junction is by rubber ring 6 sealings.
Have liquid stream, test channel 15 in the middle of the described eccentric injection allocation device main body 5, have an inclined to one side hole 16 of tapered diffusion in this passage bottom, centralizer body 3 is fixed in eccentric injection allocation device main body 5 upper ends, have an eccentric blanking plug on described eccentric injection allocation device main body 5 duct 14 is installed, the opening of the upper end open in this duct and centralizer body 3 is equidirectional.The side that described eccentric blanking plug is installed duct 14 has fluid hole 13, and its bottom communicates with the inclined to one side hole 16 of tapered diffusion on the eccentric injection allocation device main body 5.
In addition, for preventing blanking plug disturbance under the effect of liquid stream, in described adapter sleeve 7, the lower end that is positioned at eccentric injection allocation device main body 5 is equipped with a fixed support 8, have a blanking plug fixing hole 12 on it, be fixed with guiding nib 9 by hold-down screw 10 in described lower contact 11, described blanking plug fixing hole 12, guiding nib 9 are installed duct 14 with described eccentric blanking plug and all are positioned on the same axis.
Use the process of this eccentric injection allocation device as follows: at first to design according to dispensing, according to the dispensing number of plies and each laminar flow amount requirement, with throw in catcher corresponding blanking plug is dropped into the eccentric blanking plug of eccentric injection allocation device installs in the duct 14 on ground, the blanking plug cam is stuck in eccentric blanking plug and installs on the step in the duct 14 under the effect of spring force, insert in the blanking plug fixing hole 12 of eccentric injection allocation device fixed support 8 the blanking plug lower end.The eccentric injection allocation device that will have blanking plug is according to the designing requirement G.I.H, after the layering tubing string is good down, sit the completion mouth and connected ground flow, open Ground Control gate injection of polymer solution in well, the liquid stream of liquid on eccentric injection allocation device main body 5, test channel 15 enters the lower end that blanking plug is installed duct 14, ring cone through the blanking plug that is fixed on this is up, liquid upwards flows along the ring cone of blanking plug lower end, through ring coning tower tray amount, the control of flow velocity, after via fluid hole 13, enter the stratum, realized that thus the multilayer layering under the hierarchical control of packer is injected.
When needs carry out flow allocating, adopt throw in catcher will gather the blanking plug that drives on the eccentric injection allocation device and pull out, the throw in catcher running speed will be controlled well, in order to avoid dock bad.When throw in catcher with after blanking plug docks, fishing head drags for blanking plug and drags on the head and carry, and cam loses the support return, and blanking plug realizes that release is pulled out, can drop into again behind the blanking plug that more renews in the eccentric injection allocation device of target zone, can realize control thus downhole flow.Repeat above-mentioned action successively, can realize the allotment of full well multilayer different flow.Owing to should poly-drive a liquid stream, test channel 15 were arranged on the eccentric injection allocation device, and made and use the test that conventional dropping-fishing test technology just can be finished the multilayer injection profile.In addition, use this instrument after, the viscosity loss that injects solution is little, can realize anti-flushing well.
Claims (2)
1. eccentric injection allocation device of poly-drive injection well, comprise top connection (1), seating nipple (2), centralizer body (3), eccentric injection allocation device main body (5), adapter sleeve (7), lower contact (11), it is characterized in that: described top connection (1), seating nipple (2), eccentric injection allocation device main body (5), adapter sleeve (7), lower contact (11) connect in turn by screw thread each other, and the junction is by rubber ring (6) sealing;
Have liquid stream, test channel (15) in the middle of the described eccentric injection allocation device main body (5), the bottom has an inclined to one side hole of tapered diffusion (16), centralizer body (3) is fixed in eccentric injection allocation device main body (5) upper end, on described eccentric injection allocation device main body (5), have an eccentric blanking plug duct (14) is installed, the opening of the upper end open in this duct and centralizer body (3) is equidirectional, the side that described eccentric blanking plug is installed duct (14) has fluid hole (13), and its bottom communicates with the inclined to one side hole of tapered diffusion (16) on the eccentric injection allocation device main body (5).
2. the eccentric injection allocation device of poly-drive injection well according to claim 1, it is characterized in that: in described adapter sleeve (7), the lower end that is positioned at eccentric injection allocation device main body (5) is equipped with a fixed support (8), have a blanking plug fixing hole (12) on it, be fixed with guiding nib (9) by hold-down screw (10) in described lower contact (11), described blanking plug fixing hole (12), guiding nib (9) are installed duct (14) with described eccentric blanking plug and all are positioned on the same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201531431U CN201050355Y (en) | 2007-06-23 | 2007-06-23 | Polymer injection well eccentric distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201531431U CN201050355Y (en) | 2007-06-23 | 2007-06-23 | Polymer injection well eccentric distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050355Y true CN201050355Y (en) | 2008-04-23 |
Family
ID=39336839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201531431U Expired - Fee Related CN201050355Y (en) | 2007-06-23 | 2007-06-23 | Polymer injection well eccentric distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050355Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270648B (en) * | 2008-05-20 | 2011-10-05 | 中国海洋石油总公司 | Shunting injection allocation method and shunting injection allocation machine |
| CN103244706A (en) * | 2013-05-21 | 2013-08-14 | 哈尔滨博华科技有限公司 | Sleeve type low-shearing mother liquor flow regulation device |
| CN110905459A (en) * | 2019-11-06 | 2020-03-24 | 大庆油田有限责任公司 | For CO2Mechanical adjustable injection allocation device for separate injection well |
-
2007
- 2007-06-23 CN CNU2007201531431U patent/CN201050355Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270648B (en) * | 2008-05-20 | 2011-10-05 | 中国海洋石油总公司 | Shunting injection allocation method and shunting injection allocation machine |
| CN103244706A (en) * | 2013-05-21 | 2013-08-14 | 哈尔滨博华科技有限公司 | Sleeve type low-shearing mother liquor flow regulation device |
| CN110905459A (en) * | 2019-11-06 | 2020-03-24 | 大庆油田有限责任公司 | For CO2Mechanical adjustable injection allocation device for separate injection well |
| CN110905459B (en) * | 2019-11-06 | 2021-11-16 | 大庆油田有限责任公司 | For CO2Mechanical adjustable injection allocation device for separate injection well |
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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: 20080423 Termination date: 20130623 |