CN201581878U - Cast-free dead-opening eccentric water distributor - Google Patents
Cast-free dead-opening eccentric water distributor Download PDFInfo
- Publication number
- CN201581878U CN201581878U CN2009202836671U CN200920283667U CN201581878U CN 201581878 U CN201581878 U CN 201581878U CN 2009202836671 U CN2009202836671 U CN 2009202836671U CN 200920283667 U CN200920283667 U CN 200920283667U CN 201581878 U CN201581878 U CN 201581878U
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- main body
- plug
- valve seat
- eccentric
- center water
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Abstract
A cast-free dead-opening eccentric water distributor belongs to an underground water distributor used in separated layer water injection of water injection well in oil field extraction engineering. The distributor is mainly used in separated layer water injection in straight wells and directional wells with small inclination and suitable for branching injection wells of multilayer injection allocation. The distributor comprises an upper joint, an outer pipe, an inner guide pipe, bolts, an eccentric water distribution body, a lower outer pipe, screws, a lower guide support, a lower joint and a stopper, wherein a constant pressure switch is arranged in an axial through hole of the lower side of the stopper and includes a constant pressure dowel, a valve seat, a stem valve, a plug and a spring, the valve seat is arranged at the upper end of the stem valve and inside the axial through hole, the valve seat is connected with the eccentric water distribution body via the constant pressure dowel, the plug is disposed at the lower end of the stem valve and connected to the lower end of the eccentric water distribution body via threads, and the spring arranged between the plug and the valve seat is sleeved outside of the stem valve.
Description
Technical field
The utility model belongs to a kind of downhole water flow regulator that is used for the water injection well seperated layer water injection in the petroleum production engineering of oil field, is mainly used in the seperated layer water injection of straight well, little gradient directional well, is applicable to the dispensing well of multilayer injection allocation.
Background technology
At present roughly the same technology is more in domestic each oil field, now has structure, the handling characteristics letter art of the eccentric injection mandrel of exempting to throw function as follows:
(1) on the blanking plug of conventional eccentric injection mandrel, increased disposable level pressure difference opening mechanism.At the temporarily stifled piston of water nozzle port of export design, stifled temporarily piston is opened under setting pressure reduction, enters in the blanking plug blind hole, gets out of the way the water outlet duct; This structure is in use found two problems: 1. use in the bigger well of interlayer difference, often only open one deck; 2. in the less well of interlayer difference, stifled temporarily piston can not be opened synchronously, causes packer setting not thorough, and the well head operating pressure is too high.
(2) " down-hole constant pressure turn on formula constant current amount injection well downhole flow regulator " ZL patent No. 01237180.7; The seating nipple of main eccentric injection mandrel, blanking plug and seat envelope device are formed; The seat envelope utensil that requires according to right 2 has the constant pressure turn on function, and the whole machining accuracy of instrument is expected, increased to complex structure, expense, and the change to original injection well downhole flow regulator is bigger simultaneously.By to open structural analysis, the constant pressure switch that is provided with in this injection well downhole flow regulator can not satisfy the conditional request that bad ground is opened synchronously.
The utility model content
In order to simplify technology, improve the one-time success rate of oil well delamination construction, reduce machining accuracy, the utility model provides a kind of dead mouth eccentric injection mandrel of exempting to throw.
The utility model comprises top connection, upper exterior tube, interior guide pipe, bolt, the eccentric center water-distributing main body, lower outer pipe, screw, following guiding trestle, lower contact, blanking plug, described top connection is threaded in the upper end of described upper exterior tube, guide pipe is arranged on the inside of described upper exterior tube in described, the lower end of guide pipe is bolted to connection the upper end in described eccentric center water-distributing main body in described, described lower outer pipe is threaded in the bottom of described eccentric center water-distributing main body, described guiding trestle down upper end is connected the lower end of described eccentric center water-distributing main body by bolt, described fairlead is arranged on the described inside of guiding trestle down, described fairlead is fixed by bolt and described guiding trestle down, described lower contact is threaded in the lower end of described lower outer pipe, tube wall in described eccentric center water-distributing main body is provided with axially extending bore, in described axially extending bore, blanking plug is installed, in the described axially extending bore below blanking plug constant pressure switch is set, described constant pressure switch comprises the level pressure pin, valve seat, stem valve, plug, spring, described valve seat is arranged on the upper end of described stem valve, described valve seat is arranged in the described axially extending bore, described valve seat is connected with the eccentric center water-distributing main body by the level pressure pin, lower end at described stem valve is provided with plug, described plug is threaded in described eccentric center water-distributing main body lower end, between described plug and valve seat spring is set, described spring is nested with outside described stem valve.
The utility model is down to the down-hole, this moment, whole down-hole string inner chamber formed an airtight container, when the pressure in the tubing string rises to certain value, exempt to throw dead mouth eccentric injection mandrel, the level pressure key seat cut off, but valve seat and stem valve continue to keep sealing under the effect of pressure, at pressure differential effect lower valve base, stem valve and spring integral body mobile setpoint distance in the hole, after pressure reduction is eliminated, stem valve deadweight with spring action under separate with valve seat and promptly to open intake tunnel.
The utility model is provided with water channel on the tube wall of described eccentric center water-distributing main body, described water channel is parallel with the center water channel of described eccentric center water-distributing main body.The section configuration of described axial water channel is circle or crescent, and the circulation area that these water channels can increase water is set, thus augmented flow.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is that A-A of the present utility model is to sectional view;
Fig. 3 be B-B of the present utility model to sectional view.
Among the figure, 1, top connection, 2, the O RunddichtringO, 3, upper exterior tube, 4, interior guide cylinder, 5, bolt, 6, the eccentric center water-distributing main body, 7, lower outer pipe, 8, bolt, 9, following guiding trestle, 10, fairlead, 11, bolt, 12, lower contact, 13, blanking plug, 14, the O RunddichtringO, 15, the level pressure screw, 16, valve seat, 17, stem valve, 18, spring, 19, the O RunddichtringO, 20, plug, 21, axially extending bore, 22, axial water channel, 23 inlet openings.
The specific embodiment
As Fig. 1, shown in 2, the utility model comprises top connection 1, upper exterior tube 3, interior guide pipe 4, bolt 5,8,11, eccentric center water-distributing main body 6, lower outer pipe 7, following guiding trestle 9, lower contact 12, blanking plug 13, top connection 1 is threaded in the upper end of upper exterior tube 3, the lower end of interior guide pipe 4 is fixedly connected on the upper end of eccentric center water-distributing main body 6 by bolt 5, interior conductive pipe 4 is arranged on the inside of upper exterior tube 3, lower outer pipe 7 is threaded in the bottom of eccentric center water-distributing main body 6, following guiding trestle 9 upper ends are connected the lower end of eccentric center water-distributing main body 6 by bolt 8, fairlead 10 is arranged on down the inside of guiding trestle 9, fairlead 10 is fixed by bolt 11 and following guiding trestle 9, lower contact 12 is threaded in the lower end of lower outer pipe 7, tube wall axial location in eccentric center water-distributing main body 6 is provided with axially extending bore 21, blanking plug 13 is installed in axially extending bore 21, below blanking plug 13, constant pressure switch is set, constant pressure switch is arranged in the axially extending bore 21, constant pressure switch comprises level pressure pin 15, valve seat 16, stem valve 17, plug 20, spring 18, O RunddichtringO 19, valve seat 16 is arranged on the upper end of described stem valve 17, valve seat 16 is arranged in the axially extending bore 24, valve seat 16 is connected with eccentric center water-distributing main body 6 by level pressure pin 15, in the lower end of stem valve 17 plug 20 is set, plug 20 is threaded in eccentric center water-distributing main body 6 lower ends, between plug 20 and valve seat 16 spring 18 is set, spring 18 is nested with outside stem valve 17.Axial water channel 22 is set on the tube wall of eccentric center water-distributing main body 6, and axially the shape of water channel 22 can be circular hole, crescent moon hole etc.
Claims (3)
1. exempt to throw dead mouth eccentric injection mandrel for one kind, comprise top connection, upper exterior tube, interior guide pipe, bolt, the eccentric center water-distributing main body, lower outer pipe, screw, following guiding trestle, lower contact, blanking plug, described top connection is threaded in the upper end of described upper exterior tube, guide pipe is arranged on the inside of described upper exterior tube in described, the lower end of guide pipe is bolted to connection the upper end in described eccentric center water-distributing main body in described, described lower outer pipe is threaded in the bottom of described eccentric center water-distributing main body, described guiding trestle down upper end is connected the lower end of described eccentric center water-distributing main body by bolt, described fairlead is arranged on the described inside of guiding trestle down, described fairlead is fixed by bolt and described guiding trestle down, described lower contact is threaded in the lower end of described lower outer pipe, tube wall in described eccentric center water-distributing main body is provided with axially extending bore, in described axially extending bore, blanking plug is installed, it is characterized in that in the described axially extending bore below blanking plug constant pressure switch being set, described constant pressure switch comprises the level pressure pin, valve seat, stem valve, plug, spring, described valve seat is arranged on the upper end of described stem valve, described valve seat is arranged in the described axially extending bore, described valve seat is connected with the eccentric center water-distributing main body by the level pressure pin, lower end at described stem valve is provided with plug, described plug is threaded in described eccentric center water-distributing main body lower end, between described plug and valve seat spring is set, described spring is nested with outside described stem valve.
2. according to claim 1ly exempt to throw dead mouth eccentric injection mandrel, it is characterized in that on the tube wall of described eccentric center water-distributing main body, being provided with axial water channel.
3. according to claim 2ly exempt to throw dead mouth eccentric injection mandrel, the section configuration that it is characterized in that described axial water channel is circle or crescent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202836671U CN201581878U (en) | 2009-11-30 | 2009-11-30 | Cast-free dead-opening eccentric water distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202836671U CN201581878U (en) | 2009-11-30 | 2009-11-30 | Cast-free dead-opening eccentric water distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201581878U true CN201581878U (en) | 2010-09-15 |
Family
ID=42723876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202836671U Expired - Fee Related CN201581878U (en) | 2009-11-30 | 2009-11-30 | Cast-free dead-opening eccentric water distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201581878U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050069A (en) * | 2020-08-28 | 2020-12-08 | 中国航发贵阳发动机设计研究所 | Lubricating oil return filter with one-way valve |
| CN116771310A (en) * | 2023-08-22 | 2023-09-19 | 大庆市华禹石油机械制造有限公司 | Water distributor for petroleum exploitation |
-
2009
- 2009-11-30 CN CN2009202836671U patent/CN201581878U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050069A (en) * | 2020-08-28 | 2020-12-08 | 中国航发贵阳发动机设计研究所 | Lubricating oil return filter with one-way valve |
| CN116771310A (en) * | 2023-08-22 | 2023-09-19 | 大庆市华禹石油机械制造有限公司 | Water distributor for petroleum exploitation |
| CN116771310B (en) * | 2023-08-22 | 2023-12-29 | 大庆市华禹石油机械制造有限公司 | Water distributor for petroleum exploitation |
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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: 20100915 Termination date: 20121130 |