CN109707343A - A kind of thermal recovery underground annular control valve - Google Patents
A kind of thermal recovery underground annular control valve Download PDFInfo
- Publication number
- CN109707343A CN109707343A CN201811518082.3A CN201811518082A CN109707343A CN 109707343 A CN109707343 A CN 109707343A CN 201811518082 A CN201811518082 A CN 201811518082A CN 109707343 A CN109707343 A CN 109707343A
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- spring
- spring base
- control valve
- thermal recovery
- valve
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Abstract
The present invention provides a kind of thermal recovery underground annular control valves, including filter cap, valve seat, valve ball, spring base, spring and lower contact；Spring base is arranged inside lower contact, and spring is set on spring base, and valve ball is arranged on spring base top, and valve seat lower part is threadedly coupled with lower contact top, and valve seat top is threadedly coupled with filter cap.Thermal recovery underground annular control valve provided by the invention can be able to bear 20MPa operting differential pressure under 350 DEG C of high temperature, fully meet the use condition of thermal production well, rely on and be threadedly coupled between all parts, improve the stability of connection.It is moved up and down by the elastic force of spring and the pressure-balanced control valves ball of fluid, and then control the opening and closing of annular space control valve, keep annular space control valve arrangement provided by the invention relatively easy, functional reliability is high, underground working condition suitable for thermal recovery complexity, also, the annular space control valve can prevent sundries blocking and spring high temperature failure well, substantially increase practicability of the invention.
Description
Technical field
This application involves field of petroleum exploitation, and in particular to a kind of thermal recovery underground annular control valve.
Background technique
In order to improve thermal recovery effect, Offshore Heavy Oil Field thermal recovery generally uses the thermally insulating the borehole mode of annular injection nitrogen, while in order to
The security legislation for meeting offshore field needs to place isolating tool in underground, and how to control and open and close thermal production well underground
The problem of annulus access of tool is current urgent need to resolve.
Thermal recovery underground annular control valve in the prior art is mostly to develop for conventional recover the oil, does not account for thermal production well
The casing programme of high temperature, high pressure, the operating condition of high corrosion and horizontal well complexity, it is difficult to it is raw to meet marine thermal production well high temperature resistant
Production condition, structure is relative complex, and functional reliability is low, is not suitable for sea thermal production well and uses.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of thermal recovery underground annular control valve, the annular space control valves
Except can be used in common producing well, thermal production well oil recovery could be applicable to, structure is relatively easy, and functional reliability is high.
In order to reach the purpose of the present invention, the technical solution adopted by the present invention is as follows:
The present invention provides a kind of thermal recovery underground annular control valve, including filter cap, valve seat, valve ball, spring base, spring and under
Connector；
The spring base is arranged inside the lower contact, and the spring is set on the spring base, and the valve ball is set
It sets on the spring base top, the valve seat lower part is threadedly coupled with the lower contact top, the valve seat top and the filter
Cap thread connection.
Optionally, undergauge step is provided in the channel of the lower contact, the spring base is provided with limited step, described
Limited step and undergauge step cooperation limit.
Optionally, the spring base lower part is protruded into the undergauge step channel below of the lower contact.
Optionally, the spring base top is additionally provided with end step, the spring be mounted on the end step with it is described
Between undergauge step.
Optionally, the spring base is internally provided with channel, and the spring base is in the end step and the limiting stand
The first flowing hole is distributed between rank.
Optionally, taper support face is arranged at the spring base top, and valve ball is arranged on the taper support face；
Alternatively, spherical is arranged at the spring base top, valve ball is arranged on the spherical.
Optionally, taper bearing surface is arranged at the valve seat lower part, and the taper bearing surface is contacted with the valve ball top；
Alternatively, spherical bearing surface is arranged at the valve seat lower part, the spherical shape bearing surface is contacted with the valve ball top.
Optionally, the spring is divided into the first compressive state and the second compressive state,
When the spring is in the first compressive state, the valve ball lower support is in the spring base top, the valve ball
Top is bonded with the valve seat lower part；
When the spring is in the second compressive state, the valve ball lower support is in the spring base top, the valve ball
Top is separated with the valve seat lower part.
Optionally, the second flowing hole is evenly distributed on the periphery of the filter cap.
Optionally, the lower contact lower part is provided with external screw thread.
Compared with the prior art, the invention has the following advantages:
Thermal recovery underground annular control valve provided by the invention can be able to bear 20MPa operting differential pressure under 350 DEG C of high temperature,
The use condition of thermal production well is fully met, relies on and is threadedly coupled between all parts, improve the stability of connection, and simplify
Corresponding construction.It is moved up and down by the elastic force of spring and the pressure-balanced control valves ball of fluid, and then controls annular space control valve
Opening and closing, structure is relatively easy, and functional reliability is high, and for the underground working condition of thermal recovery complexity, also, the annular space control valve is logical
It crosses setting filter cap to be filtered fluid, sundries can be effectively prevent to enter in control valve and resulted in blockage；Bullet is set between in the spring
Spring abutment plays certain centralizing function to spring, can prevent spring high temperature from failing, and extends the working life of spring, and then extend
The service life of annular space control valve substantially increases practicability of the invention.
Other features and advantage will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood and implementing the application.The purpose of the application and other advantages can be by specifications, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this
The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the structural schematic diagram (closed state) of thermal recovery underground annular control valve described in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram (open state) of thermal recovery underground annular control valve described in the embodiment of the present invention.
It illustrates:
1- filter cap, the second flowing hole of 11-, 2- valve seat, 3- valve ball, 4- spring base, 41- limited step, the end 42- step,
The first flowing hole of 43-, 5- spring, 6- lower contact, 61- undergauge step.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
The embodiment of the invention provides a kind of thermal recovery underground annular control valves, as depicted in figs. 1 and 2, including filter cap 1, valve
Seat 2, valve ball 3, spring base 4, spring 5 and lower contact 6；
Spring base 4 is arranged inside lower contact 6, and spring 5 is set on spring base 4, and valve ball 3 is arranged on 4 top of spring base,
2 lower part of valve seat is threadedly coupled with 6 top of lower contact, and 2 top of valve seat is threadedly coupled with filter cap 1.
Thermal recovery underground annular control valve provided in an embodiment of the present invention can be able to bear 20MPa work under 350 DEG C of high temperature
Make pressure difference, fully meet the use condition of thermal production well, rely on and be threadedly coupled between all parts, improve the stability of connection,
And simplify corresponding construction.It is moved up and down by the elastic force of spring 5 and the pressure-balanced control valves ball 3 of fluid, and then control ring
The opening and closing of empty control valve, structure is relatively easy, and functional reliability is high, for the underground working condition of thermal recovery complexity, also, the ring
Empty control valve is filtered fluid by the way that filter cap 1 is arranged, and sundries can be effectively prevent to enter in control valve and resulted in blockage；In spring
Spring base 4 is set among 5, certain centralizing function is played to spring 5,5 high temperature failure of spring can be prevented, extends the work of spring 5
Make the service life, and then extend the service life of annular space control valve, substantially increases practicability of the invention.
Thermal recovery underground annular control valve provided in an embodiment of the present invention is mounted under thermal production well on annulus pack off, is led to
The pressure difference for crossing annulus pack off or more is opened and closed, and provides annulus access for thermal production well, while when needed
Annulus access effectively can be opened or be insulated, provides condition for the development of thermal production well other pit shaft measures.
Optionally, as depicted in figs. 1 and 2, it is provided with undergauge step 61 in 6 inner passage of lower contact, spring base 4 is provided with
Limited step 41, limited step 41 and the cooperation of undergauge step 61 limit.Further, the contracting of lower contact 6 is protruded into 4 lower part of spring base
In the channel below of diameter step 61.
Limited step 41 and the cooperation of undergauge step 61 limit, and spring 5 can be prevented to be overly compressed and damage spring 5, prevented
5 high temperature failure of spring ensure that the reliability of annular space control valve work.
Optionally, as depicted in figs. 1 and 2,4 top of spring base is additionally provided with end step 42, and spring 5 is mounted on end step
Between 42 and undergauge step 61.
Spring base 4 can move up and down, and change the distance between end step 42 and undergauge step 61, to compress or release
Put spring 5.
Optionally, taper support face is arranged at 4 top of spring base, and valve ball 3 is arranged on taper support face；Alternatively, spring base 4
Spherical is arranged at top, and valve ball 3 is arranged on spherical.
The top of spring base 4, the i.e. top of end step 42, are provided with taper support face, and valve ball 3 is arranged in the taper branch
On support face, guarantee that valve ball 3 not will shake left and right, meanwhile, the conical surface is easy to process, advantageously reduces the manufacture of annular space control valve entirety
Cost, and taper support face can prevent valve ball 3 from rotating, and sealing effect is good.Certainly, supporting surface also can be selected opposite with valve ball 3
The spherical surface answered.
Optionally, spring base 4 is internally provided with channel, and spring base 4 is distributed between end step 42 and limited step 41
There is the first flowing hole 43.
Fluid enters the inner passage of spring base 4 outside spring base 4 by the first flowing hole 43, later along spring base 4
Inner passage flow downward, the first flowing hole 43 has certain guide functions, also, first to the fluid in annular space control valve
Flowing hole 43 further filters fluid, and sundries can be effectively prevent to enter in control valve and resulted in blockage.On spring base 4
First flowing hole 43 is uniformly distributed, and the intensity to spring base 4 is avoided to affect greatly.
Optionally, taper bearing surface is arranged at 2 lower part of valve seat, and taper bearing surface is contacted with 3 top of valve ball；Alternatively, valve seat 2
Spherical bearing surface is arranged at lower part, and spherical bearing surface is contacted with 3 top of valve ball.
2 lower part of valve seat is equipped with the taper bearing surface being in contact with valve ball 3, after which contacts with valve ball 3
The channel that valve seat 2 circulates into lower contact 6 is closed, meanwhile, the conical surface is easy to process, advantageously reduces the system of annular space control valve entirety
This is caused, and taper bearing surface can prevent valve ball 3 from rotating, sealing effect is good.Certainly, bearing surface also can be selected and 3 phase of valve ball
Corresponding spherical surface.
Optionally, spring 5 divides for the first compressive state and the second compressive state,
When spring 5 is in the first compressive state, 3 lower support of valve ball is under 4 top of spring base, 3 top of valve ball and valve seat 2
Portion's fitting；Annular space control valve is in close state at this time, and the pressure of 6 lower passage of lower contact (diameter shrinkage part) is greater than in valve seat 2
Pressure in portion channel, under the rebound effect of pressure difference and spring 5, valve ball 3 is bonded shape with 2 taper of valve seat (spherical shape) bearing surface
At metal sealing, annulus access can be effectively insulated, fluid cannot enter in lower contact 6 from valve seat 2 at this time, as shown in Figure 1.
When spring 5 is in the second compressive state, 3 lower support of valve ball is under 4 top of spring base, 3 top of valve ball and valve seat 2
Part from.Annular space control valve is in the open state at this time, and the pressure of 6 lower passage of lower contact (diameter shrinkage part) is less than in valve seat 2
Pressure in portion channel pushes valve ball 3, spring base 4 along 6 inner space downlink of lower contact, spring base 4 under differential pressure action
Downlink, the taper bearing surface Yu valve ball 3 of 2 lower part of valve seat are detached from this time, seal failure, and annular fiowpath is established, and fluid is from annular space control
From the second flowing hole 11 is crossed into 1 inner space of filter cap outside valve processed, it is empty to enter 6 inside of lower contact by 2 inner space of valve seat
Between, 4 inner space of spring base is entered by the first flowing hole 43, enters annular space packing dress finally by 6 lower space of lower contact
It sets in (not shown).It is as shown in Figure 2 the limit of the second compressive state, the limited step 41 of spring base 4 resists at this time
The undergauge step 61 of lower contact 6, spring base 4 cannot move still further below.
Optionally, the second flowing hole 11 is evenly distributed on the periphery of filter cap 1.External fluid passes through the second flowing hole 11
Into in filter cap 1.Lower ending opening is shut in 1 upper end of filter cap, and cross section is in U-shape as depicted in figs. 1 and 2.
Optionally, 6 lower part of lower contact is provided with external screw thread.
External screw thread can be attached with annulus pack off.
In description in the present invention, it should be noted that term " multiple " refers to two or more, "upper", "lower"
The orientation or positional relationship of equal instructions is to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of the description present invention and
Simplify description, rather than the structure of indication or suggestion meaning has specific orientation, is constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.
In the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " connection ", " installation " should be done
It broadly understood, for example, term " connection " may be fixed connection or may be dismantle connection, or integral connection；It can be
It is connected directly, the connection inside two elements can also be can be indirectly connected through an intermediary.For the common of this field
For technical staff, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Although embodiment disclosed by the application is as above, the content only for ease of understanding the application and use
Embodiment is not limited to the application.Technical staff in any the application fields, is taken off not departing from the application
Under the premise of the spirit and scope of dew, any modification and variation, but the application can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of thermal recovery underground annular control valve, it is characterised in that: including filter cap, valve seat, valve ball, spring base, spring and under connect
Head；
The spring base is arranged inside the lower contact, and the spring is set on the spring base, and the valve ball setting exists
The spring base top, the valve seat lower part are threadedly coupled with the lower contact top, the valve seat top and the filter cap spiral shell
Line connection.
2. thermal recovery underground annular control valve according to claim 1, it is characterised in that: be arranged in the channel of the lower contact
There is undergauge step, the spring base is provided with limited step, and the limited step and undergauge step cooperation limit.
3. thermal recovery underground annular control valve according to claim 2, it is characterised in that: the spring base lower part is protruded into described
In the undergauge step channel below of lower contact.
4. thermal recovery underground annular control valve according to claim 3, it is characterised in that: the spring base top is additionally provided with end
Portion's step, the spring are mounted between the end step and the undergauge step.
5. thermal recovery underground annular control valve according to claim 4, it is characterised in that: the spring base is internally provided with logical
The first flowing hole is distributed between the end step and the limited step in road, the spring base.
6. thermal recovery underground annular control valve according to claim 1, it is characterised in that: taper branch is arranged at the spring base top
Support face, valve ball are arranged on the taper support face；
Alternatively, spherical is arranged at the spring base top, valve ball is arranged on the spherical.
7. thermal recovery underground annular control valve according to claim 1, it is characterised in that: taper abutting is arranged at the valve seat lower part
Face, the taper bearing surface are contacted with the valve ball top；
Alternatively, spherical bearing surface is arranged at the valve seat lower part, the spherical shape bearing surface is contacted with the valve ball top.
8. thermal recovery underground annular control valve according to claim 1, it is characterised in that: the spring is divided into the first compression shape
State and the second compressive state,
When the spring is in the first compressive state, the valve ball lower support is on the spring base top, the valve ball top
It is bonded with the valve seat lower part；
When the spring is in the second compressive state, the valve ball lower support is on the spring base top, the valve ball top
It is separated with the valve seat lower part.
9. thermal recovery underground annular control valve as claimed in any of claims 1 to 8, it is characterised in that: the filter cap
Periphery on be evenly distributed with the second flowing hole.
10. thermal recovery underground annular control valve as claimed in any of claims 1 to 8, it is characterised in that: connect under described
Head lower part is provided with external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811518082.3A CN109707343A (en) | 2018-12-12 | 2018-12-12 | A kind of thermal recovery underground annular control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811518082.3A CN109707343A (en) | 2018-12-12 | 2018-12-12 | A kind of thermal recovery underground annular control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109707343A true CN109707343A (en) | 2019-05-03 |
Family
ID=66255681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811518082.3A Pending CN109707343A (en) | 2018-12-12 | 2018-12-12 | A kind of thermal recovery underground annular control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109707343A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236895A (en) * | 2020-02-24 | 2020-06-05 | 中国海洋石油集团有限公司 | Normally open type thermal recovery exhaust valve |
| CN111485871A (en) * | 2020-04-15 | 2020-08-04 | 煤炭科学技术研究院有限公司 | Pressure transmission cylinder for steady-flow anti-blocking test of capillary tube of coal-bed gas well |
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| US20060162932A1 (en) * | 2005-01-24 | 2006-07-27 | Schlumberger Technology Corporation | Safety Valve for Use in an Injection Well |
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| CN206830133U (en) * | 2017-04-28 | 2018-01-02 | 中国石油天然气股份有限公司 | A kind of ball-and-seat |
| CN208203218U (en) * | 2018-04-16 | 2018-12-07 | 大庆市地油石油机械有限公司 | Closed type sieve tube ball seat |
| CN209385094U (en) * | 2018-12-12 | 2019-09-13 | 中国海洋石油集团有限公司 | A kind of annular space control valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2687324Y (en) * | 2004-02-26 | 2005-03-23 | 大庆市萨尔图区登峰石油构件厂 | Ball type single-flow valve |
| US20060162932A1 (en) * | 2005-01-24 | 2006-07-27 | Schlumberger Technology Corporation | Safety Valve for Use in an Injection Well |
| CN201068781Y (en) * | 2007-02-14 | 2008-06-04 | 中国石化集团胜利石油管理局井下作业公司 | Down-hole fixed pressure opening valve for injection, extraction and washing |
| GB2454356B (en) * | 2007-10-30 | 2012-02-22 | Caledyne Ltd | Relief valve device |
| CN201513157U (en) * | 2009-09-04 | 2010-06-23 | 中国石油天然气集团公司 | Inverse well-flushing double seal check valve |
| CN204371218U (en) * | 2014-11-20 | 2015-06-03 | 辽河石油勘探局 | Anti-drilling fluid splash valve |
| CN206830133U (en) * | 2017-04-28 | 2018-01-02 | 中国石油天然气股份有限公司 | A kind of ball-and-seat |
| CN208203218U (en) * | 2018-04-16 | 2018-12-07 | 大庆市地油石油机械有限公司 | Closed type sieve tube ball seat |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236895A (en) * | 2020-02-24 | 2020-06-05 | 中国海洋石油集团有限公司 | Normally open type thermal recovery exhaust valve |
| CN111485871A (en) * | 2020-04-15 | 2020-08-04 | 煤炭科学技术研究院有限公司 | Pressure transmission cylinder for steady-flow anti-blocking test of capillary tube of coal-bed gas well |
| CN111485871B (en) * | 2020-04-15 | 2024-06-11 | 煤炭科学技术研究院有限公司 | Pressure transmission cylinder for steady-flow anti-blocking test of capillary tube of coal-bed gas well |
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Application publication date: 20190503 |
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