CN2490317Y - Eccentric throtting water flow regulator - Google Patents
Eccentric throtting water flow regulator Download PDFInfo
- Publication number
- CN2490317Y CN2490317Y CN 01201028 CN01201028U CN2490317Y CN 2490317 Y CN2490317 Y CN 2490317Y CN 01201028 CN01201028 CN 01201028 CN 01201028 U CN01201028 U CN 01201028U CN 2490317 Y CN2490317 Y CN 2490317Y
- Authority
- CN
- China
- Prior art keywords
- joint
- seal section
- valve rod
- eccentric
- throttling
- 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 - Lifetime
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Abstract
An eccentric throttling water flow regulator relates to separate zone production of oil field two layer system, and solves problem of large water flooding pressure difference between two oil layers. The utility model is characterized in that the inner chamber of an eccentric working barrel (2) is provided with a throttling blanking plug (3) which is an internal thread joint (5) at one end of a L-shaped seal section (10) connecting a pressing cap (11). A spring (9) is arranged in an inner chamber between the seal section (10) and a valve rod (8), and the joint (5) is connected with a bottom plug (6), covered and fixed with a water nozzle (7), wherein the joint part of the seal section (10) and the joint (5) and the valve rod (8) is provided with a through hole (12). The utility model can carry out separate zone water flooding of two layers under the same pressure, and is reliable and suitable for extension and application in oil field.
Description
The utility model relates to a kind of injection well downhole flow regulator that oilfield uses, and belongs to the eccentric throttling injection well downhole flow regulator of two cover series of strata oil productions by layer.
At present, in the oil recovery process of oil field, relate to big span two and overlap the superimposed districts of oil reservoir and use an independent cover series of strata exploitation economic benefit relatively poor, have only and adopt a cover well pattern to make up exploitation, just can reach the benefit exploitation.Yet two cover oil reservoirs are when the degree of depth differs 300～500 meters, and reservoir physical property difference is big, and permeability differs nearly a hundred times, has brought difficulty to waterflooding extraction.Because top interval water injection pressure generally just can better absorb water at 15Mpa, the bottom interval is then opposite, water injection pressure is up to more than the 19Mpa, two cover oil reservoir same-well injection water, difference between reservoir pre ssure and injection pressure will reach 4.5Mpa, so just have the big problem of interlayer difference between reservoir pre ssure and injection pressure, existing injection well downhole flow regulator does not satisfy the requirement of waterflooding extraction under uniform pressure, has had a strong impact on field produces.
The purpose of this utility model is to avoid the deficiency of above-mentioned technology, avoids the big problem of interlayer difference between reservoir pre ssure and injection pressure and is implemented in the eccentric throttling injection well downhole flow regulator of waterflooding extraction under the uniform pressure and provide a kind of.
The purpose of this utility model can reach by the following technical programs: this off-centre throttling injection well downhole flow regulator is made up of last lower contact, side-pocket mandrel, connect seating nipple and go up between the lower contact, it is characterized in that: the inwall chamber at side-pocket mandrel is built-in with the throttling blanking plug, wherein blanking plug is for connecting " " type seal section one end internal thread jointing of pressure cap, be equipped with spring in the inner chamber between seal section and valve rod, joint connects the stifled back cover solid water mouth in the end, wherein has through hole at seal section and joint, valve rod junction.
The utility model has following advantage than above-mentioned prior art: owing to be furnished with the stifled and water nozzle in the end at the throttling blanking plug of the inner chamber of side-pocket mandrel, make the stifled joint that drives in the end under liquid effects, promote valve rod and compress spring, can when water filling, pressure be adjusted to 3.5Mpa, can control the water injection rate of top interval, realize two seperated layer water injections of interval under same pressure.
Accompanying drawing 1 is that structure of the present utility model is cutd open figure;
Accompanying drawing 2 is that the structure of blanking plug 3 in the accompanying drawing 1 is cutd open figure.
Below in conjunction with accompanying drawing the utility model is further described:
1-top connection in the accompanying drawing; 2-seating nipple; 3-throttling blanking plug; 4-lower contact; 5-joint; 6-end, is stifled; 7-water nozzle; 8-valve rod; 9-spring; 10-seal section; 11-pressure cap; 12-through hole.
As Fig. 1 in conjunction with shown in Figure 2, this off-centre throttling injection well downhole flow regulator is by last lower contact (1,4), side-pocket mandrel 2 is formed, and upward lower contact (1,4) connect seating nipple 2 between, inwall chamber at side-pocket mandrel 2 is built-in with throttling blanking plug 3, wherein blanking plug 3 connects the joint 5 of the conical surface for " " type seal section 10 1 end internal threads that connect pressure cap 11, in the inner chamber of 8 of seal section 10 and valve rods, be equipped with spring 9, and valve rod 8 is that sliding surface cooperates with joint 5 inwalls, joint 5 connects the stifled 6 back cover solid water mouths 7 in the end, wherein at seal section 10 and joint 5, valve rod 8 junctions have through hole 12.
When water filling, the water of injection is through the eccentric injection mandrel of top interval, and the end stifled 6 and water nozzle 7 by blanking plug 3 promote valve rod 8, compression spring 9, pressure can be adjusted to 3.5Mpa, thereby the water injection rate of control top interval is realized two seperated layer water injections of interval under same pressure.
When well-flushing, water acts on the valve rod 8 by the through hole 12 of seal section 10, makes the conical surface seal of valve rod 8 and joint 5, thus the well-flushing short circuit of control top interval.
Claims (1)
1, a kind of eccentric throttling injection well downhole flow regulator that relates to oil field two cover series of strata oil productions by layer, by last lower contact (1,4), side-pocket mandrel (2) is formed, and upward lower contact (1,4) connect seating nipple (2) between, it is characterized in that: be built-in with throttling blanking plug (3) in the inwall chamber of side-pocket mandrel (2), wherein blanking plug (3) is for connecting " " type seal section (10) one end internal thread jointings (5) of pressure cap (11), be equipped with spring (9) in the inner chamber between seal section (10) and valve rod (8), joint (5) connects stifled (6) the back cover solid water mouth (7) in the end, wherein at seal section (10) and joint (5), valve rod (8) junction has through hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01201028 CN2490317Y (en) | 2001-01-15 | 2001-01-15 | Eccentric throtting water flow regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01201028 CN2490317Y (en) | 2001-01-15 | 2001-01-15 | Eccentric throtting water flow regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2490317Y true CN2490317Y (en) | 2002-05-08 |
Family
ID=33623188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01201028 Expired - Lifetime CN2490317Y (en) | 2001-01-15 | 2001-01-15 | Eccentric throtting water flow regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2490317Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337871A (en) * | 2011-08-25 | 2012-02-01 | 西安思坦仪器股份有限公司 | Underground adjustable concentric working barrel |
| CN113107443A (en) * | 2021-04-29 | 2021-07-13 | 大庆市晟威机械制造有限公司 | Eccentric oilfield water distributor |
-
2001
- 2001-01-15 CN CN 01201028 patent/CN2490317Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337871A (en) * | 2011-08-25 | 2012-02-01 | 西安思坦仪器股份有限公司 | Underground adjustable concentric working barrel |
| CN113107443A (en) * | 2021-04-29 | 2021-07-13 | 大庆市晟威机械制造有限公司 | Eccentric oilfield water distributor |
| CN113107443B (en) * | 2021-04-29 | 2021-10-15 | 大庆市晟威机械制造有限公司 | Eccentric oilfield water distributor |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110115 Granted publication date: 20020508 |
|
| DD01 | Delivery of document by public notice |
Addressee: No.8 Oil Prodn. Factory of Daqing Oil Field Co., Ltd. Document name: Notification of Expiration of Patent Right Duration |