CN104314517A - Constant-flow steam injection valve used for heavy oil well - Google Patents
Constant-flow steam injection valve used for heavy oil well Download PDFInfo
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- CN104314517A CN104314517A CN201410684474.2A CN201410684474A CN104314517A CN 104314517 A CN104314517 A CN 104314517A CN 201410684474 A CN201410684474 A CN 201410684474A CN 104314517 A CN104314517 A CN 104314517A
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- 239000000295 fuel oil Substances 0.000 title claims abstract description 32
- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 24
- 238000011105 stabilization Methods 0.000 claims description 41
- 230000006641 stabilisation Effects 0.000 claims description 31
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract 6
- 239000003921 oil Substances 0.000 description 18
- 238000005065 mining Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008092 positive effect Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/06—Sleeve valves
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Valves (AREA)
Abstract
The invention provides a constant-flow steam injection valve used for a heavy oil well. The valve is structurally characterized in that a labyrinth-type combined sleeve formed by sequentially embedding and assembling an inner-layer valve pocket, a middle-layer throttling sleeve and an outer-layer constant-flow sleeve is assembled in a valve cavity to form a multi-layer throttling voltage regulating and stabilizing structure composed of an inner flow stabilizing annular cavity and an outer flow stabilizing annular cavity, and the inner-layer valve pocket is provided with a multi-shift steam inlet flow control structure which can timely control the steam inlet amount when pressure of externally supplied steam fluctuates, so that the flow direction of steam can be continuously changed in the labyrinth-type combined sleeve, and throttling and speed reduction are carried out in proportions for pressure regulation and stabilizing, namely the steam of the constant flow can be stably injected into the heavy oil well and provide continuous and stable heat energy for heating and viscosity reduction of a heavy oil layer. As is shown in trials, the valve has the advantages that throttling and pressure regulating performance is high, the pressure stabilizing and flow stabilizing effects are good, operation is safe and reliable, steam injection noise is low and the service life is long, and has very good application prospects in heavy oil well production of the petrochemical industry.
Description
Technical field
The present invention relates to steam valve, particularly relate to a kind of constant flow steam injection valve for dense heavy oil wells, it can regulate and control injection steam flow easily, improves dense heavy oil wells production practice, raising mining operations production efficiency and stable oil quality have obvious technique effect to optimization.
Background technology
We know, the quantity of world today's consumption of petroleum presents the gesture of accelerated growth, and conventional oil resource is sharply reducing, and the constantly soaring fluctuation of oil price has become the key factor having a strong impact on development of world economy.People have started sight to turn to exploitation to unconventional resources such as viscous crude, relevant expert estimates: along with the continuous progress of oil exploitation technology and the further reduction of cost of winning, after the several years, alternative conventional oil is become important strategy and takes over energy products by the unconventional resource such as viscous crude.Just because of this, the evaluation and exploration technology furtheing investigate the unconventional resources such as viscous crude has become a global hot subject.Root is according to data: the existing explored heavy oil reserves of adopting in the whole world is more than 4,000 hundred million tons, it is 2.7 times of recoverable oil reserves (about 1,500 hundred million tons), domestic just discovery of China can adopt viscous crude field more than 70, and total oil in place is about more than 1,200,000,000 sides, and annual production is up to 1,300 ten thousand tons.But, because the quantity of viscous crude field asphaltenes and colloid is high, light ends is less, have that density is large, viscosity is high, oil reservoir poor fluidity and a characteristic properties such as stratum energy is low, only cannot carry out mining operations by natural energy.Up to now, " steam soak method " thermal recovery technology is mainly adopted to carry out mining operations to dense heavy oil wells, its mechanism is: after carrying out " heating, viscosity reducing " to the oil reservoir of certain limit in the saturated vapour of HTHP input heavy oil wells, can by its back production out.Figuratively, it is actually the circulation mining operations process of " gulp down into steam, spue crude oil ".Understand according to field investigation: at present, there is following technological deficiency to steam injection valve conventional in heavy oil wells mining operations in China's oil industry: when the raw fluctuation of outer steam supply Hair Fixer in running, it voluntarily voltage-regulation voltage-stabilization ability and cause the flowed fluctuation to injecting steam in heavy oil wells larger, this will have a strong impact in heavy oil wells the technical matters index of carrying out " heating, viscosity reducing " operation and then affect mining operations process, this just existing heavy oil wells exploitation manufacturing process in exist " oil producing operation efficiency is lower, high and the oil quality instability of production run cost " main cause.The function that the structure how improving existing steam injection valve makes it have " voluntarily voltage-regulation voltage-stabilization, constant injection flow ", this is the great technical problem of in the urgent need to address in heavy oil wells mining operations one of China's oil industry, and the present invention wants this problem solved just.
Summary of the invention
Object of the present invention is intended to propose a kind of constant flow steam injection valve for dense heavy oil wells, it can carry out throttling voltage-regulation voltage-stabilization to the steam of conveying, realize injecting the goal of the invention of steam to constant flow in dense heavy oil wells, to stablizing " heating, viscosity reducing " process in dense heavy oil wells, optimize and improve " steam soak " thermal recovery technology, improve production operation efficiency and oil quality all has obviously technique effect.
The object of the invention is to realize by following technical solution:
A kind of constant flow steam injection valve for dense heavy oil wells that the present invention proposes, it comprises valve body, be connected and installed in the admission flange of valve body, go out vapour flange, valve gap, be fitted to the stack valve seat in valve pocket, internal layer valve pocket, spool and valve rod, described spool is fitted in internal layer valve pocket, it is characterized in that: join installation middle level throat bushing at the outside wall surface edge of internal layer valve pocket and form interior current stabilization ring cavity structure, join at the outside wall surface edge of middle level throat bushing and the outer current stabilization ring cavity structure of outer constant current cover formation is installed, the meta admission opening wall body of internal layer valve pocket being provided with one group of high-order admission opening and communicating with interior current stabilization ring cavity, low level admission opening, current stabilization ring cavity in the wall body of middle level throat bushing being provided with one group of high-order throttle orifice and being communicated with, the meta throttle orifice of outer current stabilization ring cavity, low level throttle orifice, the wall body that outer constant current is overlapped is provided with the constant current vapor opening being communicated with outer current stabilization ring cavity, filter screen is fitted with in the bottom of stack valve seat.Its design feature is: equippedly in valve body join assembling mode by internal layer valve pocket, middle level throat bushing and outer constant current cover by edge and form integrally-built " labyrinth type combined sleeve ", the throttling voltage-regulation voltage-stabilization structure of current stabilization ring cavity, outer current stabilization ring cavity in being formed between the internal layer valve pocket of " labyrinth type combined sleeve ", middle level throat bushing, outer constant current cover, it carries out voltage-regulation voltage-stabilization to steam and can effectively avoid producing turbulent flow, cavitation phenomenons, greatly can reduce steam injection operation noise and the working life of energy extension device.The wall body of internal layer valve pocket arranges one group of high-order admission opening, meta admission opening, low level admission opening and forms " many gears " flow control structure, outside during steam supply Hair Fixer life fluctuation, easily and timely regulating and controlling admission flow, to optimizing the production practice, raising production operation efficiency and the stable oil quality that improve dense heavy oil wells, there is positive effect.
For realizing technical scheme of the present invention better, it also has following technical characteristic:
The aperture of one group of high position admission opening that internal layer valve pocket wall body is arranged, meta admission opening, low level admission opening increases step by step in proportion successively to form many gears adjustment constant current steam passage structure.This structure design can to the steam entered in proportion successively throttling reduction of speed carry out voltage-regulation voltage-stabilization, it is to further reducing steam injection operation noise and extension device working life has certain effect.
The aperture of one group of high position throttle orifice that middle level throat bushing wall body is arranged, meta throttle orifice, low level throttle orifice increases step by step in proportion successively to form multi-level throttle steam passage structure.This structure design is to reduction steam injection operation noise and extension device working life also have certain effect further.
The bottom built-up welding of spool is provided with the carbide alloy hermetically-sealed construction suitable with stack valve seat.It to improve further product sealing performance, extend working life and have positive effect.
The present invention compared with the existing technology tool has the following advantages:
The present invention is equipped by internal layer valve pocket in the valve pocket of steam injection valve, " the labyrinth type combined sleeve " that combo becomes inlayed successively by middle level throat bushing and outer constant current cover, at internal layer valve pocket, middle level throat bushing, in being formed between outer constant current cover, outer current stabilization ring cavity multilayer throttling voltage-regulation voltage-stabilization structure, the wall body of internal layer valve pocket is also provided with height, in, low " many gears " admission flow control structure, it can easily and timely regulate and control admission flow and guide steam in " labyrinth type combined sleeve " successively by interior current stabilization ring cavity, throttle orifice, during outer current stabilization ring cavity transform stream to, ratio reduction of speed carries out throttling voltage-regulation voltage-stabilization, can effectively avoid producing turbulent flow, cavitation phenomenons, to optimization heavy oil wells production practice, enhance productivity and oil quality have positive effect, it is simple and direct that the present invention has structure, produce easy low cost of manufacture, safe and reliable to operation, steam injection operation noise is low, throttling pressure regulating performance is high, the outstanding advantages of the effective and long service life of pressure-stabilizing constant flow.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention, and also make an abstract accompanying drawing.
The schematic diagram (partial enlargement) that Fig. 2 is internal layer valve pocket of the present invention, combo integrally structure " labyrinth type combined sleeve " inlayed successively by middle level throat bushing, outer constant current cover, shows that spool closes " high-order admission opening ", " meta admission opening " simultaneously, " low level admission opening " makes constant flow steam injection valve be in the structural representation of closed condition.
Fig. 3 shows that spool moving to " low grade " position unlatching " low level admission opening " makes constant flow steam injection valve be in the structural representation of " low-grade location admission " duty.
Fig. 4 shows that spool moves to that " low level admission opening " is opened in " middle-grade " position simultaneously, " meta admission opening " makes constant flow steam injection valve be in the structural representation of " middle gear admission " duty on continuing.
Fig. 5 shows that spool moves to that " low level admission opening ", " meta admission opening " are opened in " top grade " position simultaneously, " high-order admission opening " makes constant flow steam injection valve be in the structural representation of " high tap position admission " duty on continuing again.
Fig. 6 is A-A view of Fig. 2, is illustrated between the internal layer valve pocket of " labyrinth type combined sleeve ", middle level throat bushing, outer constant current cover and forms interior current stabilization ring cavity, outer current stabilization ring cavity carry out throttling pressure-stabilizing constant flow amount structural representation to the steam shift flow direction.
Description of symbols in accompanying drawing:
1 is handwheel, and 2 is valve rod, and 3 is valve gap, 4 is internal layer valve pocket, and 5 is valve pocket, and 6 is stack valve seat, 7 is admission flange, and 8 is valve body, and 9 is spool, 10 for going out vapour flange, and 11 is arrow, and 12 is high-order throttle orifice, 13 is constant current vapor opening, and 14 is middle level throat bushing, and 15 is interior current stabilization ring cavity, 16 is outer constant current cover, 17 is low level throttle orifice, and 18 is high-order admission opening, and 19 is meta throttle orifice, 20 is meta admission opening, 21 is low level admission opening, and 22 is carbide alloy hermetically-sealed construction, and 23 is filter screen, 24 is outer current stabilization ring cavity, and 25 is net pressing ring.
Detailed description of the invention
Embodiments of the invention are further described below in conjunction with accompanying drawing:
A kind of constant flow steam injection valve for dense heavy oil wells that the present invention proposes, it is primarily of valve body 8, be connected and installed in the admission flange 7 of valve body 8, go out vapour flange 10, valve gap 3 and the spool 9 be fitted in valve pocket 5, valve rod 2, stack valve seat 6, filter screen 23 and " labyrinth type combined sleeve " are formed, described " labyrinth type combined sleeve " is by internal layer valve pocket 4, middle level throat bushing 14 and outer constant current cover 16 successively inlay combo dress up one guide steam shift flow to carry out throttling pressure regulation, the overall structure of pressure-stabilizing constant flow, it carries out edge combo dress in the following manner: join installation middle level throat bushing 14 at internal layer valve pocket 4 bottom outer wall face edge and form interior current stabilization ring cavity 15 structure, inlay again to join in the outside wall surface of middle level throat bushing 14 and outer current stabilization ring cavity 24 structure of outer constant current cover 16 formation is installed.The meta admission opening 20, the low level admission opening 21 that the wall body of internal layer valve pocket 4 arrange one group of high-order admission opening 18 and communicates with interior current stabilization ring cavity 15, the aperture of one group of described high position admission opening 18, meta admission opening 20, low level admission opening 21 increases step by step successively in proportion to arrange, and can form many gears and regulate constant current steam passage structure; Current stabilization ring cavity 15, the meta throttle orifice 19 of outer current stabilization ring cavity 24, low level throttle orifice 17 in middle level throat bushing 14 wall body arranging one group of high-order throttle orifice 12 and being communicated with, the aperture of one group of described high position throttle orifice 12, meta throttle orifice 19, low level throttle orifice 17 is also increase step by step successively in proportion to arrange, and can form multi-level throttle steam passage structure; The constant current vapor opening 13 16 wall bodies being provided with and being communicated with outer current stabilization ring cavity 24 is overlapped in outer constant current, the spool 9 being connected to valve rod 2 bottom is fitted in internal layer valve pocket 4, the bottom built-up welding of spool 9 is provided with the carbide alloy hermetically-sealed construction 22 suitable with stack valve seat 6, and it and can extend working life certain effect to improving product hermeticity further.Filter screen 23 is fixedly fitted with by net pressing ring 25 bottom stack valve seat 6, can impurity effectively in filtering steam, impurity can be stoped to enter " labyrinth type combined sleeve " interior blockage phenomenon, also have certain effect to the normal operation steady in a long-term of maintenance equipment, prolongation working life.It is performed such installation work: first rotate the handwheel 1 being fitted to valve rod 2 top, spool 9 is displaced downwardly to high-order admission opening 18, meta admission opening 20, the low level admission opening 21 closed on internal layer valve pocket 4 wall body simultaneously, make constant flow steam injection valve be in closed condition, then by admission flange 7, go out vapour flange 10 be fixedly connected be installed on outer in main steam header.Confirm on inspection errorless after, can according to " dense heavy oil wells mining operations steam injection operational procedure ", slowly rotate handwheel 1 and spool 9 will move to required " gear " position injecting quantity of steam, so far, namely complete and open constant flow steam injection valve injects operation from steam to dense heavy oil wells, steam is first after filter screen 23 filters out impurities, enter again in " labyrinth type combined sleeve " make its transform stream to and in proportion step by step throttling reduction of speed carry out voltage-regulation voltage-stabilization, the steam of constant flow continuously and smoothly can be injected in dense heavy oil wells, for dense heavy oil tested layer " heating, viscosity reducing " operation supplies continual and steady heat energy.When there is fluctuation in outer confession steam pressure, easily and timely can operate handwheel 1 moving valve core 9 position, namely the throttle flow by regulating " admission gear " to increase or reduce steam, as shown in arrow 11, steam after filter screen 23 filters out impurities can by different admission gears respectively through the low level admission opening 21(on internal layer valve pocket 4 wall body i.e. " low-grade location admission " duty), or simultaneously through meta admission opening 20(i.e. " middle gear admission " duty) enter in interior current stabilization ring cavity 15, meta throttle orifice 19 on middle level throat bushing 14 wall body again, low level throttle orifice 17 enters in outer current stabilization ring cavity 24, or the high-order admission opening 18(simultaneously on internal layer valve pocket 4 wall body i.e. " high tap position admission " duty).Steam carry out after in " labyrinth type combined sleeve " by directed successively by interior current stabilization ring cavity 15, meta throttle orifice 19, low level throttle orifice 17, outer current stabilization ring cavity 24 constantly transform stream to and in proportion step by step throttling reduction of speed carry out voltage-regulation voltage-stabilization, again through high-order throttle orifice 12, constant current vapor opening 13 finally by the steam going out vapour flange 10 and export pressure-stabilizing constant flow amount, in dense heavy oil wells, continuously and smoothly can inject the steam of constant flow rate, provide continual and steady heat energy for dense heavy oil tested layer carries out " heating, viscosity reducing " flow chart.Show through the on probation of long term: the present invention has the outstanding advantages that throttling pressure regulating performance is high, pressure-stabilizing constant flow is effective, safe and reliable to operation, steam injection operation noise is low really, to optimize further dense heavy oil wells production practice, improve oil producing operation operating mode, to enhance productivity and oil quality all has obviously technique effect, in petrochemical industry dense heavy oil wells mining operations, have splendid application prospect.
Claims (4)
1. the constant flow steam injection valve for dense heavy oil wells, it comprises valve body (8), be connected and installed in the admission flange (7) of valve body (8), go out vapour flange (10), valve gap (3), be fitted to the stack valve seat (6) in valve pocket (5), internal layer valve pocket (4), spool (9) and valve rod (2), described spool (9) is fitted in internal layer valve pocket (4), it is characterized in that: join at the outside wall surface edge of internal layer valve pocket (4) and current stabilization ring cavity (15) structure in the formation of middle level throat bushing (14) is installed, join at the outside wall surface edge of middle level throat bushing (14) and outer current stabilization ring cavity (24) structure of outer constant current cover (16) formation is installed, the meta admission opening (20) wall body of internal layer valve pocket (4) being provided with one group of high-order admission opening (18) and communicating with interior current stabilization ring cavity (15), low level admission opening (21), current stabilization ring cavity (15) in the wall body of middle level throat bushing (14) being provided with one group of high-order throttle orifice (12) and being communicated with, the meta throttle orifice (19) of outer current stabilization ring cavity (24), low level throttle orifice (17), the wall body of outer constant current cover (16) is provided with the constant current vapor opening (13) being communicated with outer current stabilization ring cavity (24), filter screen (23) is fitted with in the bottom of stack valve seat (6).
2. High Pressure Difference according to claim 1 liquidates laminated choke valve, it is characterized in that: the aperture of one group that arranges on internal layer valve pocket (4) wall body high-order admission opening (18), meta admission opening (20), low level admission opening (21) increases step by step in proportion successively to form many gears and regulate constant current steam passage structure.
3. High Pressure Difference according to claim 1 and 2 liquidates laminated choke valve, it is characterized in that: the aperture of one group that arranges on middle level throat bushing (14) wall body high-order throttle orifice (12), meta throttle orifice (19), low level throttle orifice (17) increases step by step in proportion successively to form multi-level throttle steam passage structure.
4. High Pressure Difference according to claim 1 and 2 liquidates laminated choke valve, it is characterized in that: the bottom built-up welding of spool (9) is provided with the carbide alloy hermetically-sealed construction (22) suitable with stack valve seat (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410684474.2A CN104314517A (en) | 2014-11-25 | 2014-11-25 | Constant-flow steam injection valve used for heavy oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410684474.2A CN104314517A (en) | 2014-11-25 | 2014-11-25 | Constant-flow steam injection valve used for heavy oil well |
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| Publication Number | Publication Date |
|---|---|
| CN104314517A true CN104314517A (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410684474.2A Pending CN104314517A (en) | 2014-11-25 | 2014-11-25 | Constant-flow steam injection valve used for heavy oil well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11099584B2 (en) | 2017-03-27 | 2021-08-24 | Saudi Arabian Oil Company | Method and apparatus for stabilizing gas/liquid flow in a vertical conduit |
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|---|---|---|---|---|
| JPH11248033A (en) * | 1998-03-02 | 1999-09-14 | Tokyo Kousou Kk | High-pressure-reducing regulating valve |
| CN2474817Y (en) * | 2001-04-19 | 2002-01-30 | 郑兵 | Valve |
| CN101270819A (en) * | 2008-05-08 | 2008-09-24 | 四川华林自控科技有限公司 | High pressure-difference sleeve valve |
| CN101893132A (en) * | 2009-05-21 | 2010-11-24 | 季忠贤 | Multifunctional high-differential-pressure regulating valve |
| CN102853154A (en) * | 2012-08-29 | 2013-01-02 | 江阴万讯自控设备有限公司 | High-pressure difference classification protected regulating valve |
| CN103307324A (en) * | 2012-03-06 | 2013-09-18 | 江苏省东源核电阀门工程技术研究中心有限公司 | Adjusting valve for water supply system of ultra-supercritical unit |
| CN204419118U (en) * | 2014-11-25 | 2015-06-24 | 四川长仪油气集输设备股份有限公司 | For the constant flow steam injection valve of dense heavy oil wells |
-
2014
- 2014-11-25 CN CN201410684474.2A patent/CN104314517A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11248033A (en) * | 1998-03-02 | 1999-09-14 | Tokyo Kousou Kk | High-pressure-reducing regulating valve |
| CN2474817Y (en) * | 2001-04-19 | 2002-01-30 | 郑兵 | Valve |
| CN101270819A (en) * | 2008-05-08 | 2008-09-24 | 四川华林自控科技有限公司 | High pressure-difference sleeve valve |
| CN101893132A (en) * | 2009-05-21 | 2010-11-24 | 季忠贤 | Multifunctional high-differential-pressure regulating valve |
| CN103307324A (en) * | 2012-03-06 | 2013-09-18 | 江苏省东源核电阀门工程技术研究中心有限公司 | Adjusting valve for water supply system of ultra-supercritical unit |
| CN102853154A (en) * | 2012-08-29 | 2013-01-02 | 江阴万讯自控设备有限公司 | High-pressure difference classification protected regulating valve |
| CN204419118U (en) * | 2014-11-25 | 2015-06-24 | 四川长仪油气集输设备股份有限公司 | For the constant flow steam injection valve of dense heavy oil wells |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11099584B2 (en) | 2017-03-27 | 2021-08-24 | Saudi Arabian Oil Company | Method and apparatus for stabilizing gas/liquid flow in a vertical conduit |
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Application publication date: 20150128 |
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