CN2343334Y - Double-layer eccentric water distribution packer - Google Patents
Double-layer eccentric water distribution packer Download PDFInfo
- Publication number
- CN2343334Y CN2343334Y CN 98219436 CN98219436U CN2343334Y CN 2343334 Y CN2343334 Y CN 2343334Y CN 98219436 CN98219436 CN 98219436 CN 98219436 U CN98219436 U CN 98219436U CN 2343334 Y CN2343334 Y CN 2343334Y
- Authority
- CN
- China
- Prior art keywords
- water
- packer
- double
- eccentric
- 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 double-layer eccentric water distribution packer on the pipe string of an oilfield water injection well. The double-layer eccentric water distribution packer shortens distance between a water distributor and a packer, has the function of two water distributors, and can inject water to two adjacent water injecting layers. The water distributor 1 and the packer 3 are designed into one unit. A water inlet eye a for entering a blanking plug 4 is drilled on the inner working barrel 2 of the packer. A water outlet eye d communicated with the blanking plug 4 is drilled on the outer working barrel 5 of the eccentric water distributor 1. A flow channel 6 which is communicated with the water outlet eye d and enters the lower part of the packer is arranged on the wall of the outer working barrel 5. When matched with original water inlet and outlet eyes (c, d), the utility model can inject the two adjacent water injecting layers.
Description
The utility model relates to the water injection well in oil fields injection well downhole flow regulator and packer is the double-deck eccentric center water-distributing packer of one.
Along with deepening continuously of water flooding, comprehensive water cut is more and more higher.In order to delay the comprehensive water cut rate of climb, improve the Oilfield developing effect, realize the long-term stable yields in oil field, certainly will tap the latent power to thin difference stratum.The oil field oil reservoir has several layers, and thick oil pay is arranged, middle thick oil pay and oil sheet; From the oil reservoir degree of porosity divide again,, poor, before the oil field development, mid-term at first develop degree of porosity good, intermediate thick, in thick and oil sheet; Because the employing seperated layer water injection improves recovery ratio in the time of oil field development, the water filling fltting speed that requires to enter oil reservoir wants consistent, will take some relative measures on injection well downhole flow regulator, and the single deck tape-recorder that will carry out that has stops annotating or limiting water filling.Oil reservoir later development thin poor reservoir has tens water filling layers in a pit shaft, each water distribution parameter differs, and constitutes very long water injection well tubing string by injector and eccentric injection mandrel, and under the situation of thin poor reservoir exploitation, the water distribution tubing string can not meet the demands at present.
The purpose of this utility model is to avoid above-mentioned problems of the prior art, and a kind of double-deck eccentric center water-distributing packer of simplifying water distribution tubing string (being particularly related to the subdivision of reservoir water filling) is provided.
The purpose of this utility model can reach by the following technical programs: eccentric injection mandrel and packer are designed to one, on the interior seating nipple of packer, be drilled with the water inlet eye that enters blanking plug, be drilled with the hydrophthalmia that goes out that is communicated with blanking plug on the outer working tube of eccentric injection mandrel again, on the outer working tube wall, have with this to go out the runner that hydrophthalmia is communicated with and enters lower packer.Can shorten distance between injection well downhole flow regulator and the packer by such scheme, be shaped on twoly, can satisfy the requirement of subdivision of reservoir water filling, thereby can realize above-mentioned purpose into and out of hydrophthalmia.
The utility model is compared with above-mentioned present technology can have following effect: because injection well downhole flow regulator and packer are made as one, respectively there are two on it into and out of hydrophthalmia, shorten the length of water distribution tubing string, be fit to the subdivision of reservoir water filling, can play the effect of upper and lower two injection well downhole flow regulators.
Accompanying drawing 1 is a 665-2 type injection well downhole flow regulator structure chart.
Accompanying drawing 2 is the utility model partial cutaway structure charts.
Accompanying drawing 3 is that Fig. 2 is enterprising, water outlet eyelet enlarged drawing.
To be described further the utility model below in conjunction with accompanying drawing:
By shown in Figure 1, be equipped with on the 665-2 type eccentric injection mandrel blanking plug and into and out of hydrophthalmia (c, b).By Fig. 2, shown in Figure 3, the utility model is that eccentric injection mandrel 1 and packer 3 are designed to one, on the interior seating nipple 2 of injection well downhole flow regulator, be drilled with the water inlet eye a that enters blanking plug 4 again, be drilled with again on the outer working tube 5 of eccentric injection mandrel 1 be communicated with blanking plug 4 go out hydrophthalmia d, while has on outer working tube 5 walls and goes out the runner 6 that hydrophthalmia d is communicated with and enters lower packer 3, with original on the injection well downhole flow regulator (c b) can be to contiguous two water filling layer injection allocation into and out of hydrophthalmia.
Claims (1)
1. double-deck eccentric center water-distributing packer that relates to oil-field flooding, have eccentric injection mandrel (1) and on blanking plug (4), into and out of hydrophthalmia (c, b) and packer (3), it is characterized in that: eccentric injection mandrel (1) and packer (3) are made as one, on the interior seating nipple (2) of injection well downhole flow regulator, be drilled with the water inlet eye (a) that enters blanking plug (4) again, be drilled with again on the outer working tube (5) of eccentric injection mandrel (1) be communicated with blanking plug (4) go out hydrophthalmia (d), on outer working tube (5) wall, have and go out the runner 6 that hydrophthalmia (d) is communicated with and enters lower packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98219436 CN2343334Y (en) | 1998-08-05 | 1998-08-05 | Double-layer eccentric water distribution packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98219436 CN2343334Y (en) | 1998-08-05 | 1998-08-05 | Double-layer eccentric water distribution packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2343334Y true CN2343334Y (en) | 1999-10-13 |
Family
ID=33971500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98219436 Expired - Fee Related CN2343334Y (en) | 1998-08-05 | 1998-08-05 | Double-layer eccentric water distribution packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2343334Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775976A (en) * | 2010-01-10 | 2010-07-14 | 白霞 | Water filling layer position increasing device |
| CN102287160A (en) * | 2011-08-24 | 2011-12-21 | 中国石油天然气股份有限公司 | Double blanking plug water injection packer |
| CN108386155A (en) * | 2018-02-07 | 2018-08-10 | 中国石油天然气股份有限公司 | A kind of double eccentric integrated packers of water injection well in oil fields |
-
1998
- 1998-08-05 CN CN 98219436 patent/CN2343334Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775976A (en) * | 2010-01-10 | 2010-07-14 | 白霞 | Water filling layer position increasing device |
| CN102287160A (en) * | 2011-08-24 | 2011-12-21 | 中国石油天然气股份有限公司 | Double blanking plug water injection packer |
| CN108386155A (en) * | 2018-02-07 | 2018-08-10 | 中国石油天然气股份有限公司 | A kind of double eccentric integrated packers of water injection well in oil fields |
| CN108386155B (en) * | 2018-02-07 | 2020-09-18 | 中国石油天然气股份有限公司 | Double-eccentric integrated packer for water injection well of oil field |
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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 |