CN107829714A - A kind of unidirectional tubing string continuous directional valve of oil production by layer and method - Google Patents

A kind of unidirectional tubing string continuous directional valve of oil production by layer and method Download PDF

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Publication number
CN107829714A
CN107829714A CN201710885942.6A CN201710885942A CN107829714A CN 107829714 A CN107829714 A CN 107829714A CN 201710885942 A CN201710885942 A CN 201710885942A CN 107829714 A CN107829714 A CN 107829714A
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China
Prior art keywords
valve
chamber
tubing string
pressure
trigger
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Granted
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CN201710885942.6A
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Chinese (zh)
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CN107829714B (en
Inventor
刘玉友
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JIANGSU TENGLONG PETROCHEMICAL MACHINERY CO., LTD.
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刘玉友
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Priority to CN201810881329.1A priority Critical patent/CN108915647A/en
Priority to CN201810562635.9A priority patent/CN108825184A/en
Priority to CN201810562826.5A priority patent/CN108442907A/en
Priority to CN201810881330.4A priority patent/CN109057751A/en
Priority to CN201810557176.5A priority patent/CN108843285A/en
Priority to CN201710885942.6A priority patent/CN107829714B/en
Publication of CN107829714A publication Critical patent/CN107829714A/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B43/14—Obtaining from a multiple-zone well
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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

Abstract

The present invention relates to a kind of unidirectional tubing string continuous directional valve of oil production by layer and method.Its technical scheme is：Fixed plate is realized by the tubing string fluid pressure come from above and moved down, and is closed by trigger valve and is suppressed chamber, meanwhile, the balanced valve in counter balance pocket moves up and realizes accumulation of energy；When tubing string fluid pressure discharges, balanced valve reverse movement drives closing plunger to move up, and then drives trigger valve to move up, and suppress chamber, and relief valve now moves down, pressure-releasing chamber and start and connect opening between chamber, the liquid of tubing string is by lower intercommunicating pore into the tubing string below body, after liquid release, relief valve moves up, and by pressure release valve closure, the tubing string above fixed plate can be suppressed lower intercommunicating pore again by liquid, above-mentioned steps are circulated, and then realize continuous commutation.Beneficial effect is：One-trip string of the present invention can complete the construction that oil production by layer repeatedly continuously commutates, and greatly save process, reduce labor intensity and operating cost, shorten construction period.

Description

A kind of unidirectional tubing string continuous directional valve of oil production by layer and method
Technical field
The present invention relates to a kind of oil downhole control, more particularly to a kind of unidirectional tubing string of oil production by layer continuously commutates Valve.
Background technology
In oilfield production, multilayer position is a common phenomenon, and in numerous layer positions, the profit content of liquid is not With, in order to increase the benefit, it is necessary to which the mode such as cement injecting, water shutoff agent, chemical water shutoff blocks water layer in the production in oil field, open Producing horizon, to improve tar productivity, expense is reduced, increases benefit, is recovered the oil for more series of strata, uses the non-targeted oil of bridge plugging in advance Layer, then arbitrary target layer is exploited with this novel process tubing string, unwanted exploitation reservoir can be closed, realizes oil well destination layer Recover the oil, at present, Patent No. 2013104715687, patent name is《A kind of layering pumping unit》, the device is in oil production by layer During, the problem of unidirectional tubing string can produce commutation, and the device is present is：Unidirectional tubing string can produce commutation, but can not reset, , it is necessary to be extracted out the liquid in tubing string with pump in actual production, it is impossible to realize continuous commutation, add the difficulty and expense of operation With reducing the efficiency of oil recovery.
The content of the invention
The purpose of the present invention is aiming at drawbacks described above existing for prior art, there is provided a kind of unidirectional tubing string of oil production by layer connects Continuous reversal valve, one-trip string can complete the construction that oil production by layer repeatedly continuously commutates, greatly save process, and it is strong to reduce work Degree and operating cost, shorten construction period.
The unidirectional tubing string continuous directional valve of a kind of oil production by layer that the present invention mentions, its technical scheme are：Including body（1）、 Start chamber（2）, relief valve（4）, suppress chamber（5）, trigger valve（6）, close chamber（7）, shutoff valve（9）, counter balance pocket（10）, balanced valve （12）, pressure-releasing chamber（13）And fixed plate（14）, in body（1）A side lower part be provided with start chamber（2）, starting chamber（2）Inside set There is relief valve（4）, in relief valve（4）Bottom install the first spring（3）, in body（1）Middle part be provided with pressure-releasing chamber（13）, let out Press chamber（13）Top offer lower intercommunicating pore（15）, pressure-releasing chamber（13）Pass through lower intercommunicating pore（15）With starting chamber（2）Connection, and Pass through relief valve（4）The lower intercommunicating pore of control（15）Switch；Starting chamber（2）Top to suppress chamber（5）, suppress chamber（5）'s Top passes through trigger valve（6）With suppressing chamber（5）Coordinate；In body（1）Top be provided with close chamber（7）, close chamber（7）Inside it is provided with Shutoff valve（9）, shutoff valve（9）Bottom be provided with second spring（8）, in body（1）Another upper lateral part be provided with counter balance pocket（10）, Counter balance pocket（10）Bottom pass through upper intercommunicating pore（17）With closing chamber（7）Connection, the counter balance pocket（10）It is interior to be provided with balanced valve （12）, balanced valve（12）Top be provided with the 3rd spring（11）；The trigger valve（6）And shutoff valve（9）Top be connected to it is solid Fixed board（14）On, fixed plate（14）Realized and move down by the tubing string fluid pressure come from above, pass through trigger valve（6）Close Suppress chamber（5）, meanwhile, counter balance pocket（10）Interior balanced valve（12）Move up and realize accumulation of energy；Discharged in tubing string fluid pressure When, balanced valve（12）Reverse movement drives shutoff valve（9）Move up, and then drive trigger valve（6）Move up, and beat Press chamber（5）, and relief valve（4）Now move down, pressure-releasing chamber（13）With starting chamber（2）Between connect and open, the liquid of tubing string passes through Lower intercommunicating pore（15）Into the tubing string below body, after liquid release, relief valve（4）Move up, lower intercommunicating pore is by relief valve（4）Envelope Close, fixed plate（14）The tubing string of top can be suppressed again by liquid, circulate above-mentioned steps, and then realize continuous commutation.
Above-mentioned shutoff valve（9）And second spring（8）Installed in fixed plate（14）The body lumen of bottom, and fixed plate（14） Center and shutoff valve（9）Between be provided with through hole, shutoff valve（9）Lower end connection second spring（8）.
Above-mentioned startup chamber（2）With suppressing chamber（5）Connection, start chamber（2）Diameter be more than suppress chamber（5）Diameter, and let out Pressure valve（4）Starting chamber（2）Inside move up and down.
Above-mentioned relief valve（4）Pressure be more than balanced valve（12）And shutoff valve（9）Pressure and fixed plate under the 4th spring （16）Elastic force sum.
Above-mentioned closing chamber（7）With counter balance pocket（10）Form the linker of U-typed.
Above-mentioned fixed plate（14）The 4th spring is provided between body（16）.
Above-mentioned trigger valve（6）Top be upper cylinder（6.1）, bottom is by lower cylinder（6.2）And cone（6.3）Group Into lower cylinder（6.2）Diameter and cone（6.3）Basal diameter it is identical, upper cylinder（6.1）With lower cylinder （6.2）Between be round platform（6.4）, round platform（6.4）Upper bottom surface diameter be more than bottom surface diameter, upper cylinder（6.1）'s Diameter and round platform（6.4）Upper bottom surface diameter it is identical, lower cylinder（6.2）Diameter and round platform（6.4）Bottom surface diameter It is identical.
Above-mentioned trigger valve（6）On lower cylinder（6.2）And cone（6.3）It is inserted in and suppresses chamber（5）It is interior, lower cylinder （6.2）With suppressing chamber（5）Between formed liquid passage, and pass through round platform（6.4）Chamber is suppressed in closure（5）.
A kind of application method for the unidirectional tubing string continuous directional valve of oil production by layer that the present invention mentions, comprises the following steps：
First, first, the upper and lower ends of body connect tubing string respectively, in tripping in producing well, by pump into the tubing string on top just To suppressing, in the presence of positive fluid pressure, shutoff valve（9）Move down, due to trigger valve（6）And shutoff valve（9）Top Portion is connected to fixed plate（14）On, shutoff valve（9）Move down drive trigger valve（6）Move down, make trigger valve（6）By pressure release Valve（4）Close；
2nd, during pump pressure release, shutoff valve（9）On elastic force and shutoff valve（9）The pressure effect of intracavitary and balanced valve（12）Interior accumulation of energy Collective effect under, due to trigger valve（6）And shutoff valve（9）Top be connected to fixed plate（14）On, shutoff valve（9）Drive is opened Dynamic valve（6）Move up simultaneously, make trigger valve（6）Open, due to shutoff valve（9）, balanced valve（12）, trigger valve（6）In liquid Portion, do not influenceed by external force, the state after keeping it turned on；And now fluid pressure is more than relief valve（4）Pressure, so, let out Pressure valve（4）Move down, so as to open pressure-releasing chamber（13）With starting chamber（2）Between lower intercommunicating pore（15）, liquid pressure release is realized, until After balance, relief valve（4）Moving up again makes lower intercommunicating pore（15）Close；
3rd, carry out liquid again to suppress, now extraneous pressure is more than relief valve（4）Pressure, so relief valve（4）Although it is in let out Leakage state, but the feed speed in tubing string is more than liquid speed degree, so, trigger valve（6）Move down, due to trigger valve（6） And shutoff valve（9）Top be connected to fixed plate（14）On, trigger valve（6）Turn off valve（9）Move down, work as trigger valve（6） When completely closing, suppress again, the present invention is realized continuous commutation.
The beneficial effects of the invention are as follows：The fixed plate of the present invention is realized to moving down by the tubing string fluid pressure come from above It is dynamic, closed by trigger valve and suppress chamber, meanwhile, the balanced valve in counter balance pocket moves up and realizes accumulation of energy；In tubing string liquid pressure When power discharges, balanced valve reverse movement drives shutoff valve to move up, and then drives trigger valve to move up, and suppresses Chamber, and relief valve now moves down, and connects opening between pressure-releasing chamber and startup chamber, the liquid of tubing string enters body by lower intercommunicating pore The tubing string of lower section, after liquid release, relief valve moves up, and for lower intercommunicating pore by pressure release valve closure, the tubing string above fixed plate can be again It is secondary to be suppressed by liquid, above-mentioned steps are circulated, and then realize continuous commutation；
The present invention can complete the construction that oil production by layer repeatedly continuously commutates by one-trip string, greatly save process, reduce Labor intensity and operating cost, shorten construction period.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the body with fixed plate, shutoff valve and trigger valve of the present invention；
Accompanying drawing 2 is the overall structure diagram of the present invention；
Accompanying drawing 3 is the structural representation of trigger valve；
In figure：Body 1, start chamber 2, the first spring 3, relief valve 4, suppress chamber 5, trigger valve 6, close close chamber 7, second spring 8, Shutoff valve 9, counter balance pocket 10, the 3rd spring 11, balanced valve 12, pressure-releasing chamber 13, fixed plate 14, lower intercommunicating pore 15, the 4th spring 16, Upper intercommunicating pore 17, upper cylinder 6.1, lower cylinder 6.2, cone 6.3, round platform 6.4.
Embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein preferred real Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
The unidirectional tubing string continuous directional valve of a kind of oil production by layer that the present invention mentions, its technical scheme are：Including body 1, open Dynamic chamber 2, relief valve 4, chamber 5, trigger valve 6 are suppressed, chamber 7, shutoff valve 9, counter balance pocket 10, balanced valve 12, pressure-releasing chamber 13 is closed and consolidates Fixed board 14, is provided with a side lower part of body 1 and starts chamber 2, is provided with relief valve 4 starting in chamber 2, pacifies in the bottom of relief valve 4 If the first spring 3, pressure-releasing chamber 13 is provided with the middle part of body 1, the top of pressure-releasing chamber 13 offers lower intercommunicating pore 15, pressure-releasing chamber 13 Connected by lower intercommunicating pore 15 with starting chamber 2, and the switch of lower intercommunicating pore 15 is controlled by relief valve 4；Starting the top of chamber 2 To suppress chamber 5, the top for suppressing chamber 5 is coordinated by trigger valve 6 with suppressing chamber 5；It is provided with the top of body 1 and closes chamber 7, is closed Shutoff valve 9 is provided with chamber 7, the bottom of shutoff valve 9 is provided with second spring 8, and counter balance pocket 10 is provided with another upper lateral part of body 1, The bottom of counter balance pocket 10 is connected by upper intercommunicating pore 17 with closing chamber 7, and balanced valve 12, balanced valve 12 are provided with the counter balance pocket 10 Top be provided with the 3rd spring 11；The top of the trigger valve 6 and shutoff valve 9 is connected in fixed plate 14, fixed plate 14 by The tubing string fluid pressure come from above is realized and moved down, and is closed by trigger valve 6 and is suppressed chamber 5, meanwhile, it is flat in counter balance pocket 10 Weighing apparatus valve 12 moves up and realizes accumulation of energy；When tubing string fluid pressure discharges, the reverse movement of balanced valve 12 drives shutoff valve 9 upward It is mobile, and then drive trigger valve 6 to move up, and chamber 5 is suppressed, and relief valve 4 now moves down, pressure-releasing chamber 13 is with starting chamber Connect and open between 2, the tubing string that the liquid of tubing string is entered below body by lower intercommunicating pore 15, after liquid release, on relief valve 4 Moving, lower intercommunicating pore is closed by relief valve 4, and the tubing string of the top of fixed plate 14 can be suppressed again by liquid, circulate above-mentioned steps, And then realize continuous commutation.
Above-mentioned shutoff valve 9 and second spring 8 be arranged on the bottom of fixed plate 14 body lumen, and the center of fixed plate 14 with Through hole, the lower end connection second spring 8 of shutoff valve 9 are provided between shutoff valve 9.
Above-mentioned startup chamber 2 connects with suppressing chamber 5, and the diameter for starting chamber 2 is more than the diameter for suppressing chamber 5, and relief valve 4 is opening Moved up and down in dynamic chamber 2.
The pressure of above-mentioned relief valve 4 is more than the bullet of the 4th spring 16 under the pressure and fixed plate of balanced valve 12 and shutoff valve 9 Power sum.
Above-mentioned closing chamber 7 forms the linker of U-typed with counter balance pocket 10, and bottom connects, it is possible to achieve the storage of counter balance pocket Energy.
The 4th spring 16 is provided between above-mentioned fixed plate 14 and body, plays the function of auxiliary resilience.
Referring to the drawings 3, the top of trigger valve 6 is upper cylinder 6.1, and bottom is by 6.3 groups of lower cylinder 6.2 and cone Into the diameter of lower cylinder 6.2 is identical with the basal diameter of cone 6.3, is between upper cylinder 6.1 and lower cylinder 6.2 Round platform 6.4, the diameter of the upper bottom surface of round platform 6.4 are more than the diameter of bottom surface, and the diameter of upper cylinder 6.1 is upper with round platform 6.4 The diameter of bottom surface is identical, and the diameter of lower cylinder 6.2 is identical with the bottom surface diameter of round platform 6.4.
In addition, the lower cylinder 6.2 and cone 6.3 in trigger valve 6 are inserted in and suppressed in chamber 5, lower cylinder 6.2 is with beating Liquid passage was formed between pressure chamber 5, so provides a transit time to pressure release and closing, and block eventually through round platform 6.4 Chamber 5 is suppressed, realization is fully sealed.
A kind of application method for the unidirectional tubing string continuous directional valve of oil production by layer that the present invention mentions, comprises the following steps：
First, first, the upper and lower ends of body connect tubing string respectively, in tripping in producing well, by pump into the tubing string on top just To suppressing, in the presence of positive fluid pressure, shutoff valve 9 moves down, because the top of trigger valve 6 with shutoff valve 9 connects In fixed plate 14, shutoff valve 9, which moves down, drives trigger valve 6 to move down, and trigger valve 6 is closed relief valve 4；
2nd, during pump pressure release, accumulation of energy is common in pressure effect and balanced valve 12 of the elastic force with the intracavitary of shutoff valve 9 in shutoff valve 9 Under effect, because the top of trigger valve 6 and shutoff valve 9 is connected in fixed plate 14, shutoff valve 9 drives trigger valve 6 to move up simultaneously, Trigger valve 6 is opened, because shutoff valve 9, balanced valve 12, trigger valve 6 are in liquid internal, are not influenceed, kept it turned on by external force State afterwards；And now fluid pressure is more than the pressure of relief valve 4, so, relief valve 4 moves down, so as to open pressure-releasing chamber 13 With starting the lower intercommunicating pore 15 between chamber 2, liquid pressure release is realized, until after balance, relief valve 4 moves up again closes lower intercommunicating pore 15 Close；
3rd, carry out liquid again to suppress, now extraneous pressure is more than the pressure of relief valve 4, although so relief valve 4 is in leakage shape State, but the feed speed in tubing string is more than liquid speed degree, so, trigger valve 6 moves down, due to trigger valve 6 and shutoff valve 9 Top be connected in fixed plate 14, trigger valve 6 turns off valve 9 and moved down, and when trigger valve 6 completely closes, suppresses again, The present invention is set to realize continuous commutation.
One-trip string of the present invention can complete the construction that oil production by layer repeatedly continuously commutates, and greatly save process, reduce Labor intensity and operating cost, shorten construction period.
Operation experiments：Pressure caused by the difference of the area of shutoff valve 9 and balanced valve 12 is PBWith the float valve pressure of shutoff valve 9 For PB' determine that pressure difference is fluctuated in the pressure release of pump, 8MPa is suppressed to pump, the pressure of the valve pocket of shutoff valve 9 is 8MPa-PB', the He of relief valve 4 Pressure between trigger valve 6 is PA, due to PA＞ PB, in the presence of positive pressure, shutoff valve 9 moves down, due to trigger valve 6 and the top of shutoff valve 9 be connected in fixed plate 14, shutoff valve 9, which moves down, drives trigger valve 6 to move down, and makes trigger valve 6 Relief valve 4 is closed, then pump pressure release, during 8MPa pressure vanishing, elastic force and the pressure of the intracavitary of shutoff valve 9 in shutoff valve 9 Power act on and balanced valve 12 in accumulation of energy also have under the collective effect of the spring under fixed plate, due to trigger valve 6 and shutoff valve 9 Top is connected in fixed plate 14, and shutoff valve 9 drives trigger valve 6 to move up simultaneously, opens trigger valve 6, due to shutoff valve 9, is put down Weighing apparatus valve 12, trigger valve 6 are in liquid internal, are not influenceed by external force, the state after keeping it turned on；Then, suppress again, due to outer Carry out pressure and be more than PA, so relief valve 4 is in leak condition, because the feed speed in tubing string is more than liquid speed degree, trigger valve 6 to Lower movement, because the top of trigger valve 6 and shutoff valve 9 is connected in fixed plate 14, trigger valve 6 turns off valve 9 and moved down, when When trigger valve 6 completely closes, 8MPa is suppressed again, instrument is commutated.
It is described above, only it is the part preferred embodiment of the present invention, any those skilled in the art may profit Equivalent technical scheme is changed or is revised as with the technical scheme of above-mentioned elaboration.Therefore, the technology according to the present invention Any simple modification or substitute equivalents that scheme is carried out, belong to the greatest extent the scope of protection of present invention.

Claims (9)

1. a kind of unidirectional tubing string continuous directional valve of oil production by layer, it is characterized in that：Including body（1）, start chamber（2）, relief valve （4）, suppress chamber（5）, trigger valve（6）, close chamber（7）, shutoff valve（9）, counter balance pocket（10）, balanced valve（12）, pressure-releasing chamber（13） And fixed plate（14）, in body（1）A side lower part be provided with start chamber（2）, starting chamber（2）It is interior to be provided with relief valve（4）, letting out Pressure valve（4）Bottom install the first spring（3）, in body（1）Middle part be provided with pressure-releasing chamber（13）, pressure-releasing chamber（13）Top open Provided with lower intercommunicating pore（15）, pressure-releasing chamber（13）Pass through lower intercommunicating pore（15）With starting chamber（2）Connection, and pass through relief valve（4）Control The lower intercommunicating pore of system（15）Switch；Starting chamber（2）Top to suppress chamber（5）, suppress chamber（5）Top pass through trigger valve （6）With suppressing chamber（5）Coordinate；In body（1）Top be provided with close chamber（7）, close chamber（7）It is interior to be provided with shutoff valve（9）, close Valve（9）Bottom be provided with second spring（8）, in body（1）Another upper lateral part be provided with counter balance pocket（10）, counter balance pocket（10）Bottom Portion passes through upper intercommunicating pore（17）With closing chamber（7）Connection, the counter balance pocket（10）It is interior to be provided with balanced valve（12）, balanced valve（12）'s Top is provided with the 3rd spring（11）；The trigger valve（6）And shutoff valve（9）Top be connected to fixed plate（14）On, fixed plate （14）Realized and move down by the tubing string fluid pressure come from above, pass through trigger valve（6）Chamber is suppressed in closing（5）, meanwhile, put down Weigh chamber（10）Interior balanced valve（12）Move up and realize accumulation of energy；When tubing string fluid pressure discharges, balanced valve（12）Reversely It is mobile to drive shutoff valve（9）Move up, and then drive trigger valve（6）Move up, and suppress chamber（5）, and relief valve （4）Now move down, pressure-releasing chamber（13）With starting chamber（2）Between connect and open, the liquid of tubing string passes through lower intercommunicating pore（15）Into Tubing string below body, after liquid release, relief valve（4）Move up, lower intercommunicating pore is by relief valve（4）Closing, fixed plate（14）On The tubing string of side can be suppressed again by liquid, circulate above-mentioned steps, and then realize continuous commutation.
2. the unidirectional tubing string continuous directional valve of a kind of oil production by layer according to claim 1, it is characterized in that：The shutoff valve （9）And second spring（8）Installed in fixed plate（14）The body lumen of bottom, and fixed plate（14）Center and shutoff valve（9） Between be provided with through hole, shutoff valve（9）Lower end connection second spring（8）.
3. the unidirectional tubing string continuous directional valve of a kind of oil production by layer according to claim 1, it is characterized in that：The startup chamber （2）With suppressing chamber（5）Connection, start chamber（2）Diameter be more than suppress chamber（5）Diameter, and relief valve（4）Starting chamber（2） Inside move up and down.
4. the unidirectional tubing string continuous directional valve of a kind of oil production by layer according to claim 3, it is characterized in that：The relief valve （4）Pressure be more than balanced valve（12）And shutoff valve（9）Pressure and fixed plate under the 4th spring（16）Elastic force sum.
5. the unidirectional tubing string continuous directional valve of a kind of oil production by layer according to claim 1, it is characterized in that：The closing chamber （7）With counter balance pocket（10）Form the linker of U-typed.
6. the unidirectional tubing string continuous directional valve of a kind of oil production by layer according to claim 1, it is characterized in that：The fixed plate （14）The 4th spring is provided between body（16）.
7. the unidirectional tubing string continuous directional valve of a kind of oil production by layer according to claim 1, it is characterized in that：The trigger valve （6）Top be upper cylinder（6.1）, bottom is by lower cylinder（6.2）And cone（6.3）Composition, lower cylinder（6.2）'s Diameter and cone（6.3）Basal diameter it is identical, upper cylinder（6.1）With lower cylinder（6.2）Between be round platform（6.4）, Round platform（6.4）Upper bottom surface diameter be more than bottom surface diameter, upper cylinder（6.1）Diameter and round platform（6.4）Upper bottom The diameter in face is identical, lower cylinder（6.2）Diameter and round platform（6.4）Bottom surface diameter it is identical.
8. the unidirectional tubing string continuous directional valve of a kind of oil production by layer according to claim 7, it is characterized in that：The trigger valve （6）On lower cylinder（6.2）And cone（6.3）It is inserted in and suppresses chamber（5）It is interior, lower cylinder（6.2）With suppressing chamber（5）It Between formed liquid passage, and pass through round platform（6.4）Chamber is suppressed in closure（5）.
9. the application method of any unidirectional tubing string continuous directional valve of oil production by layer in a kind of such as claim 1-8, it is characterized in that Comprise the following steps：
First, first, the upper and lower ends of body connect tubing string respectively, in tripping in producing well, by pump into the tubing string on top just To suppressing, in the presence of positive fluid pressure, shutoff valve（9）Move down, due to trigger valve（6）And shutoff valve（9）Top Portion is connected to fixed plate（14）On, shutoff valve（9）Move down drive trigger valve（6）Move down, make trigger valve（6）By pressure release Valve（4）Close；
2nd, during pump pressure release, shutoff valve（9）On elastic force and shutoff valve（9）The pressure effect of intracavitary and balanced valve（12）Interior accumulation of energy Collective effect under, due to trigger valve（6）And shutoff valve（9）Top be connected to fixed plate（14）On, shutoff valve（9）Drive is opened Dynamic valve（6）Move up simultaneously, make trigger valve（6）Open, due to shutoff valve（9）, balanced valve（12）, trigger valve（6）In liquid Portion, do not influenceed by external force, the state after keeping it turned on；And now fluid pressure is more than relief valve（4）Pressure, so, let out Pressure valve（4）Move down, so as to open pressure-releasing chamber（13）With starting chamber（2）Between lower intercommunicating pore（15）, liquid pressure release is realized, until After balance, relief valve（4）Moving up again makes lower intercommunicating pore（15）Close；
3rd, carry out liquid again to suppress, now extraneous pressure is more than relief valve（4）Pressure, so relief valve（4）Although it is in let out Leakage state, but the feed speed in tubing string is more than liquid speed degree, so, trigger valve（6）Move down, due to trigger valve（6） And shutoff valve（9）Top be connected to fixed plate（14）On, trigger valve（6）Turn off valve（9）Move down, work as trigger valve（6） When completely closing, suppress again, the present invention is realized continuous commutation.
CN201710885942.6A 2017-09-27 2017-09-27 A kind of unidirectional tubing string continuous directional valve of oil production by layer Active CN107829714B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CN201810881329.1A CN108915647A (en) 2017-09-27 2017-09-27 A kind of unidirectional tubing string continuous directional valve of oil production by layer
CN201810562635.9A CN108825184A (en) 2017-09-27 2017-09-27 A kind of petroleum downhole control
CN201810562826.5A CN108442907A (en) 2017-09-27 2017-09-27 A kind of application method of the unidirectional tubing string continuous directional valve of oil production by layer
CN201810881330.4A CN109057751A (en) 2017-09-27 2017-09-27 The unidirectional tubing string continuous directional valve of oil production by layer
CN201810557176.5A CN108843285A (en) 2017-09-27 2017-09-27 A kind of petroleum downhole control
CN201710885942.6A CN107829714B (en) 2017-09-27 2017-09-27 A kind of unidirectional tubing string continuous directional valve of oil production by layer

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CN201810562826.5A Division CN108442907A (en) 2017-09-27 2017-09-27 A kind of application method of the unidirectional tubing string continuous directional valve of oil production by layer
CN201810562635.9A Division CN108825184A (en) 2017-09-27 2017-09-27 A kind of petroleum downhole control
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CN201810562635.9A Withdrawn CN108825184A (en) 2017-09-27 2017-09-27 A kind of petroleum downhole control
CN201810881330.4A Pending CN109057751A (en) 2017-09-27 2017-09-27 The unidirectional tubing string continuous directional valve of oil production by layer
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CN201810881330.4A Pending CN109057751A (en) 2017-09-27 2017-09-27 The unidirectional tubing string continuous directional valve of oil production by layer
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CN2611595Y (en) * 2003-01-17 2004-04-14 中国石化胜利油田有限公司采油工艺研究院 Layering pumping unit
JP4018706B2 (en) * 2005-05-20 2007-12-05 株式会社南武 Hydraulic cylinder device
CN103307293A (en) * 2013-06-06 2013-09-18 杨甘生 Hydraulic-control reversing valve
CN203515527U (en) * 2013-10-11 2014-04-02 王志强 Layering oil extraction device
CN104196794A (en) * 2014-07-31 2014-12-10 红安安达新材料有限责任公司 Pressure reducing valve
CN105459993A (en) * 2015-12-28 2016-04-06 中国煤炭科工集团太原研究院有限公司 Hydraulic system with mechanical and hydraulic combined brake device
CN107558964A (en) * 2017-09-27 2018-01-09 刘玉友 A kind of continuous reversing arrangement of the unidirectional tubing string of oil production by layer and method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2611595Y (en) * 2003-01-17 2004-04-14 中国石化胜利油田有限公司采油工艺研究院 Layering pumping unit
JP4018706B2 (en) * 2005-05-20 2007-12-05 株式会社南武 Hydraulic cylinder device
CN103307293A (en) * 2013-06-06 2013-09-18 杨甘生 Hydraulic-control reversing valve
CN203515527U (en) * 2013-10-11 2014-04-02 王志强 Layering oil extraction device
CN104196794A (en) * 2014-07-31 2014-12-10 红安安达新材料有限责任公司 Pressure reducing valve
CN105459993A (en) * 2015-12-28 2016-04-06 中国煤炭科工集团太原研究院有限公司 Hydraulic system with mechanical and hydraulic combined brake device
CN107558964A (en) * 2017-09-27 2018-01-09 刘玉友 A kind of continuous reversing arrangement of the unidirectional tubing string of oil production by layer and method

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CN109057751A (en) 2018-12-21
CN108825184A (en) 2018-11-16

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