CN208966313U - Preheating type steam distribution pipe column - Google Patents

Abstract

The utility model provides a can preheating-type steam distribution tubular column, it includes valve body and break-make subassembly at least, the valve body has the steam injection passageway that the axial is link up, be equipped with steam inlet, first steam injection pipe, second steam injection pipe, backstop portion and steam vent on the lateral wall of valve body, the break-make subassembly includes first break-make spare and second break-make spare, first break-make spare has the first operating position of shutoff steam injection pipe and the second operating position of butt backstop portion, when first break-make spare is located the second operating position, it blocks the steam injection passageway and blocks the second steam injection pipe, first steam injection pipe and steam injection passageway intercommunication; the second on-off part is provided with a steam injection port, the second on-off part is provided with a first steam injection position for plugging the steam inlet and a second steam injection position abutting against the first on-off part, when the second on-off part is positioned at the second steam injection position, the second on-off part plugs the first steam injection pipe, and the steam injection port is communicated with the steam inlet. The utility model discloses can earlier totally annotate into preheating, carry out the layering again and annotate vapour, be favorable to boiler equipment's operation.

Description

It can pre-heated steam distributing pipe column

Technical field

The utility model relates to the thermal recoveries in petroleum production engineering to match vapour technical field, in particular to one kind can pre-heated steam distributing pipe Column.

Background technique

Thickened oil steam-stimulated exploitation causes longitudinally to employ unbalanced due to reservoir permeability difference, it is therefore desirable to according to Each layer geology characteristic carries out multi-zone flow regulating steam.Existing steam distributing pipe column can only be steam injection in layer, i.e., can only be divided Layer steam injection, can not generally infuse into preheating, cause initial stage steam injection pressure higher, be unfavorable for the operation of boiler plant, give injection boiler Operation brings adverse effect.

Utility model content

The purpose of the utility model is to provide one kind first generally to infuse into preheating, then carry out layer steam injection can be pre-heated Steam distributing pipe column.

One kind that in order to achieve the above object, the utility model provides can pre-heated steam distributing pipe column, include at least by up to Under sequentially connected upper packer, can pre-heated steam distributing valve and lower packet, it is described can pre-heated steam distributing valve include at least:

Valve body, have axially through steam injection channel, the upper packer and the lower packet are connected to institute The external sealing shroud of the upper and lower ends of valve body, the valve body is equipped with housing, and forms annular space between the housing and the valve body, The side wall of the valve body is from top to bottom successively arranged air intake, the first steam injection pipe, the second steam injection pipe, stopper section and steam drain, institute It states air intake and the steam drain is connected with the annular space, the stopper section is located in the steam injection channel, first note One end of the first end of steam pipe and the second steam injection pipe is connected with the steam injection channel, and the second of the first steam injection pipe The second end of end and the second steam injection pipe is along the outside for extending radially to the housing of the valve body；

On-off component comprising be set in the valve body and can be moved along the axial seal of the valve body from the bottom to top First on-off part and the second on-off part, the first on-off part, which has, to be connected to the steam injection channel and blocks the first steam injection pipe The first operating position and abut second operating position of stopper section, be located at second work in the first on-off part In the state of making position, the first on-off part blocks the steam injection channel and blocks the second steam injection pipe, first note Steam pipe is connected to the steam injection channel；The second on-off part is equipped with steam injection mouth, and the second on-off part has described in connection Steam injection channel simultaneously blocks the first steam injection position of the air intake and abuts the second steam injection position of the first on-off part, In the state that the second on-off part is located at the second steam injection position, the second on-off part blocks first steam injection Pipe, the steam injection mouth are connected with the air intake.

It as described above can pre-heated steam distributing pipe column, wherein the first on-off part includes that the first inner sleeve and first block Ball is placed at first operating position in described first and is connected by the first shear pin with the valve body, and described first The inner surface of the outer peripheral surface of inner sleeve and the valve body, which seals, to be cooperated, and first inner sleeve has the be connected to the steam injection channel One axial pass-through holes, first ball sealer can be tightly connected with the first axis through hole, pass through first ball sealer With the sealed connection of the first axis through hole, first inner sleeve can cut first shear pin by the first working position It sets and is moved to the second operating position；

The second on-off part includes the second inner sleeve and the second ball sealer, is placed at the first steam injection position and leads in described second It crosses the second shear pin to connect with the valve body, and the outer peripheral surface of second inner sleeve and the inner surface sealing of the valve body are matched It closes, second inner sleeve has the second axial pass-through holes being connected to the steam injection channel, and first ball sealer can pass through institute The second axial pass-through holes are stated, second ball sealer can be tightly connected with second axial pass-through holes, the steam injection mouth setting It is described by the sealed connection of second ball sealer and second axial pass-through holes on the side wall of second inner sleeve Second inner sleeve can cut second shear pin and be moved to the second steam injection position by the first steam injection position.

It as described above can pre-heated steam distributing pipe column, wherein the first axis through hole is in contracting tapered from top to bottom Diameter shape, and the bottom end internal diameter of the first axis through hole is less than the diameter of first ball sealer.

It as described above can pre-heated steam distributing pipe column, wherein the lower end surface of second axial pass-through holes is circumferentially inside The baffle ring with a central hole formed is shunk, the center-hole diameter of the baffle ring is less than the diameter of second ball sealer, and institute The center-hole diameter for stating baffle ring is greater than the diameter of first ball sealer.

It as described above can pre-heated steam distributing pipe column, wherein the stopper section is to be set on the inner wall of the valve body Annular convex platform, the internal diameter of the annular convex platform is less than the outer diameter of first inner sleeve.

It as described above can pre-heated steam distributing pipe column, wherein the steam injection channel is up big and down small stepped hole, and described The lower inner diameter in steam injection channel is less than the outer diameter of first inner sleeve, and the step surface in the steam injection channel forms the stopper section.

As described above can pre-heated steam distributing pipe column, wherein the side wall upper part of the valve body is circumferentially spaced be equipped with it is multiple The quantity of the air intake, the steam injection mouth is identical as the quantity of the air intake, the lower sidewall of the valve body circumferentially between Every equipped with multiple steam drains.

It as described above can pre-heated steam distributing pipe column, wherein the first steam injection pipe is parallel with the second steam injection pipe to be set It sets, circumferentially-spaced along the valve body is equipped with multiple first steam injection pipes and multiple second steam injection pipes.

As described above can pre-heated steam distributing pipe column, wherein it is described can pre-heated steam distributing valve further include top connection, it is described on The lower part of connector is equipped with external screw thread, and the top of the valve body is equipped with internal screw thread, passes through the rotation of the external screw thread and the internal screw thread Connect cooperation, the valve body connects with the top connection, it is described can pre-heated steam distributing valve pass through the top connection and the upper packing Device connects.

As described above can pre-heated steam distributing pipe column, wherein it is described can pre-heated steam distributing pipe column further include be connected to it is described The telescoping tube of the upper end of upper packer.

Compared with prior art, as follows the advantages of the utility model:

It is provided by the utility model can pre-heated steam distributing pipe column, pass through change the first on-off part and the second on-off part position It sets, realizing steam injection initial stage preheats two general steam injections of oil reservoir, after reaching pre-heat effect, then carries out layer steam injection, subtracts Maximum pressure when small boiler Initial operation, is conducive to the operation of boiler, and will not add operating cost and task difficulty.

Detailed description of the invention

Following drawings are only intended to schematically illustrate and explain the present invention, does not limit the model of the utility model It encloses.Wherein:

Fig. 1 be the utility model can pre-heated steam distributing pipe column structural schematic diagram；

Fig. 2 be it is shown in FIG. 1 can in pre-heated steam distributing pipe column can pre-heated steam distributing valve a using state structure diagram；

Fig. 3 be it is shown in FIG. 1 can in pre-heated steam distributing pipe column can pre-heated steam distributing valve another use state structural representation Figure.

Drawing reference numeral explanation:

It 10, can pre-heated steam distributing valve；1, valve body；11, steam injection channel；12, air intake；13, the first steam injection pipe；14, second Steam injection pipe；15, stopper section；16, steam drain；2, housing；3, annular space；4, the first on-off part；41, the first inner sleeve；411, first axle To through hole；42, the first ball sealer；43, the first shear pin；5, the second on-off part；51, the second inner sleeve；511, second is axial Through hole；5111, baffle ring；512, steam injection mouth；52, the second ball sealer；53, the second shear pin；6, top connection；71, first is close Seal；72, the second sealing ring；20, upper packer；30, lower packet；40, telescoping tube；100, top oil reservoir；200, lower part oil Layer.

Specific embodiment

In order to have clearer understanding to the technical solution of the utility model, purpose and effect, now in conjunction with Detailed description of the invention sheet The specific embodiment of utility model.

As shown in Figure 1, Figure 2 and Figure 3, the utility model provide one kind can pre-heated steam distributing pipe column, main application exists It in the oil well of upper layer and lower layer steam injection, and is useful in current oil well initial stage injection allocation pressure higher later period lower oil well, this can be pre- Hot type steam distributing pipe column include at least from top to bottom sequentially connected upper packer 20, can pre-heated steam distributing valve 10 and lower packet 30, it is described can pre-heated steam distributing valve 10 include at least valve body 1 and on-off component, in which:

Valve body 1 have axially through steam injection channel 11, steam injection channel 11, which is formed, injects steam for oil reservoir 200 to the lower part The first injection channel, upper packer 20 and lower packet 30 be connected to the upper and lower ends of valve body 1, specifically, valve body 1 Upper and lower ends pass through oil pipe respectively and connect with upper packer 20 and lower packet 30, in use, upper packer 20 is located at top oil The top of layer 100, to prevent steam from entering the space of 100 or more top oil reservoir, lower packet 30 be located at top oil reservoir 100 and Between bottom oil layer 200, steam can be avoided to enter top oil reservoir 100 by lower packet 30, and lower packet 30 can be passed through One oil reservoir is divided into two steam injection units up and down to recover the oil, the specific structure of upper packer 20 and lower packet 30 and is set Principle is the prior art, and details are not described herein, and the external sealing shroud of valve body 1 is equipped with housing 2, and shape between housing 2 and valve body 1 At annular space 3, the side wall of valve body 1 is from top to bottom successively arranged air intake 12, the first steam injection pipe 13, the second steam injection pipe 14, stopper section 15 and steam drain 16, air intake 12 and steam drain 16 be connected with annular space 3, i.e., air intake 12, annular space 3 and steam drain 16 successively connect It is logical to form the second injection channel that steam is injected for oil reservoir 200 to the lower part, and the upper and lower ends of the second injection channel respectively with The upper and lower part of first injection channel is connected, and stopper section 15 is located in steam injection channel 11, the first end of the first steam injection pipe 13 It is connected with steam injection channel 11 with the first end of the second steam injection pipe 14, the second end of the first steam injection pipe 13 and the second steam injection pipe 14 Second end along the outside for extending radially to housing 2 of valve body 1, i.e. the first steam injection pipe 13 and the second steam injection pipe 14 are respectively formed For to the third injection channel and the 4th injection channel of 100 steam injection of top oil reservoir, steam in the first injection channel can be via Third injection channel or the 4th injection channel flow into top oil reservoir 100, and due to the setting of upper packer 20 and lower packet 30, So that can only enter top oil reservoir 100 from the steam that third injection channel or the 4th injection channel are flowed out；

On-off component includes being set in valve body 1 from the bottom to top and can be along the first on-off that the axial seal of valve body 1 is moved Part 4 and the second on-off part 5, the first on-off part 4 have connection steam injection channel 11 and block the first working position of the first steam injection pipe 13 The second operating position for setting and abutting stopper section 15, in the state that the first on-off part 4 is located at the second operating position, first On-off part 4 blocks steam injection channel 11 and blocks the second steam injection pipe 14, and the first steam injection pipe 13 is connected to steam injection channel 11；Second on-off Part 5 be equipped with steam injection mouth 512, the second on-off part 5 have connection steam injection channel 11 and block air intake 12 the first steam injection position, And abut the second steam injection position of the first on-off part 4, in the state that the second on-off part 5 is located at the second steam injection position, second On-off part 5 blocks the first steam injection pipe 13, and steam injection mouth 512 is connected with air intake 12, logical by changing the first on-off part 4 and second The position of broken piece 5 may be implemented to be preheated to top oil reservoir 100 and 200 steam injection of bottom oil layer simultaneously, and realize individually downward Oil reservoir 200 steam injection in portion's is individually recovered the oil to 100 steam injection of top oil reservoir；

Specifically, when in use, first by can pre-heated steam distributing pipe column upper end connected pipes, then make pre-heated to match Steam pipe column is lowered into purpose of horizon with oil pipe, at this point, upper packer 20 is located at 100 top of top oil reservoir, lower packet 30 is located at Between top oil reservoir 100 and bottom oil layer 200, the lower end in steam injection channel 11 is connected to bottom oil layer 200, the second steam injection pipe 14 Second end is connected to top oil reservoir 100, and the first on-off part 4 is located at the first operating position, and the second on-off part 5 is located at the first steam injection position It sets, since the first on-off part 4 has blocked the first steam injection pipe 13, the second on-off part 5 has blocked air intake 12, inject steam injection A part of steam in channel 11 enters bottom oil layer 200 via the lower end in steam injection channel 11, injects one in steam injection channel 11 Some vapor enters top oil reservoir 100 via the second steam injection pipe 14, while carrying out to top oil reservoir 100 and bottom oil layer 200 pre- Heat, after reaching scheduled pre- heat, the first on-off part 4 of control is moved to the second operating position, at this point, the first on-off part 4 with Stopper section 15 abuts and has blocked steam injection channel 11, so that steam not can enter bottom oil layer 200 in injection steam injection channel 11, and The movement of first on-off valve opens the first steam injection pipe 13 and has blocked the second steam injection pipe 14, so that the first steam injection pipe 13 and steam injection Channel 11 is connected to, and the oil recovery of top oil reservoir 100 can only be entered by the second steam injection pipe 14 by injecting steam in steam injection channel 11, works as injection After amount reaches design flow, the second on-off part 5 of control is moved to the second steam injection position, at this point, the second on-off part 5 and the first on-off part 4 abut and block the first steam injection pipe 13, and steam injection mouth 512 is connected with air intake 12, and since the first on-off valve is still in second Operating position causes injection channel to be still blocked, and the second steam injection pipe 14 is still blocked, and therefore, injects the steaming in steam injection channel 11 Vapour can only enter annular space 3 by steam injection mouth 512 and air intake 12, via the bottom of annular space 3, steam drain 16 and steam injection channel 11 It recovers the oil into bottom oil layer 200.

It is provided by the utility model can pre-heated steam distributing pipe column, pass through change the first on-off part 4 and the second on-off part 5 position It sets, realizing steam injection initial stage preheats two general steam injections of oil reservoir, after reaching pre-heat effect, then carries out layer steam injection, subtracts Maximum pressure when small boiler Initial operation, is conducive to the operation of boiler, and will not add operating cost and task difficulty.

In a preferred embodiment of the utility model, as shown in Figures 2 and 3, the first on-off part 4 includes first Inner sleeve 41 and the first ball sealer 42, the first inner sleeve 41 are connected by the first shear pin 43 with valve body 1 at the first operating position, And first inner sleeve 41 outer peripheral surface and the inner surface of valve body 1 seal and cooperate, it is preferred that the outer peripheral surface of the first inner sleeve 41 and valve body 1 Inner surface between be equipped with the first sealing ring 71, the first inner sleeve 41 has the first axis through hole that is connected to steam injection channel 11 411, the first ball sealer 42 can be tightly connected with first axis through hole 411, be penetrated through by the first ball sealer 42 with first axis The sealed connection in hole 411, the first inner sleeve 41 can cut the first shear pin 43 and be moved to the second working position by the first operating position It sets, specifically, the first inner sleeve 41 is limited at the first operating position by the first shear pin 43, when reaching scheduled preheating After amount, the first ball sealer 42 is put into first axis through hole 411, the first ball sealer 42 and first axis through hole 411 are close Envelope connection, i.e., the first ball sealer 42 blocks first axis through hole 411, and the outer peripheral surface due to the first inner sleeve 41 and valve body 1 Inner surface seal cooperation so that the first inner sleeve 41 and the first ball sealer 42 block steam injection channel 11, not due to steam at this time In disconnected injection steam injection channel 11, the pressure in the steam injection channel 11 on 41 top of the first inner sleeve is caused to be continuously increased, when pressure increases When being added to the cutting pressure of the first shear pin 43, the first shear pin 43 is cut, and is equipped with the first of the first ball sealer 42 Inner sleeve 41 is moved downward under the action of steam pressure to abut with stopper section 15, i.e., the first on-off part 4 is by the first operating position It is moved to the second operating position, at this point, the first steam injection pipe 13 is connected to steam injection channel 11, the second steam injection pipe 14 is blocked, due to Steam injection channel 11 is blocked by the first on-off part 4 can not inject steam to lower layer, and steam can only enter upper via the second steam injection pipe 14 Portion's oil reservoir 100 recovers the oil, and realizes oil production by layer；

Second on-off part 5 includes the second inner sleeve 51 and the second ball sealer 52, and the second inner sleeve 51 is led at the first steam injection position It crosses the second shear pin 53 to connect with valve body 1, and the inner surface of the outer peripheral surface of the second inner sleeve 51 and valve body 1 seals and cooperates, preferably , the second sealing ring 72 is equipped between the outer peripheral surface of the second inner sleeve 51 and the inner surface of valve body 1, the second inner sleeve 51 has and steam injection The second axial pass-through holes 511 that channel 11 is connected to, the first ball sealer 42 can pass through the second axial pass-through holes 511, the second ball sealer 52 can be tightly connected with the second axial pass-through holes 511, and steam injection mouth 512 is set on the side wall of the second inner sleeve 51, passes through the second envelope The sealed connection of stifled ball 52 and the second axial pass-through holes 511, the second inner sleeve 51 can cut the second shear pin 53 by the first steam injection Position is moved to the second steam injection position, specifically, after the quantity of steam injected to top oil reservoir 100 reaches design flow, to The second ball sealer 52 is put into two axial pass-through holes 511, the second ball sealer 52 and the second axial pass-through holes 511 are tightly connected, i.e., Second ball sealer 52 blocks the second axial pass-through holes 511, and the outer peripheral surface of the second inner sleeve 51 and the inner surface sealing of valve body 1 are matched Close so that the second inner sleeve 51 and the second ball sealer 52 be also by the blocking in steam injection channel 11, steam can not by the second on-off part 5, At this time since steam constantly injects in steam injection channel 11, cause the pressure in the steam injection channel 11 on 51 top of the second inner sleeve continuous Increase, when cutting pressure of the pressure increase to the second shear pin 53, the second shear pin 53 is cut, and is equipped with the second envelope Second inner sleeve 51 of stifled ball 52 is moved downward under the action of steam pressure to abut with the first inner sleeve 41, i.e. the second on-off part 5 Second steam injection position is moved to by the first steam injection position, at this point, steam injection channel 11 is same by the first on-off part 4 and the second on-off part 5 When block, and in the state that the second on-off part 5 is located at the second steam injection position, the second on-off part 5 blocks the first steam injection pipe 13, note Steam ports 512 is connected with air intake 12, and therefore, the steam injected in steam injection channel 11 can only pass through steam injection mouth 512 and air intake 12 enter annular space 3, enter bottom oil layer 200 via the bottom of annular space 3, steam drain 16 and steam injection channel 11 and recover the oil.

Certainly, the first on-off part 4 and the second on-off part 5 can also use ball valve, set on the valve body 1 of the second on-off part 5 There is steam injection mouth 512, ball valve can be connected by shear pin with valve body 1, can also be connected by electromagnet with valve body 1, On-off by controlling ball valve realizes that the first on-off part 4 and the second on-off part 5 and the connection or blocking in steam injection channel 11 build the pressure, and lead to It crosses steam pressure to cut pin or overcome the first on-off of magnetic force moving part 4 and the second on-off part 5 mobile, realize individually to top 100 steam injection of oil reservoir recovers the oil or injects steam-assisted recovery together to upper and lower two oil reservoirs simultaneously.

Further, first axis through hole 411 is in tapered undergauge shape from top to bottom, and first axis through hole 411 Bottom end internal diameter less than the first ball sealer 42 diameter so that investment the first ball sealer 42 after, the first ball sealer 42 is in steam pressure Under the action of can with first axis through hole 411 realize fit closely, thus effectively block steam injection channel.

Further, the gear with a central hole that the lower end surface of the second axial pass-through holes 511 is circumferentially formed to contract Ring 5111, the center-hole diameter of baffle ring 5111 is less than the diameter of the second ball sealer 52, and the center-hole diameter of baffle ring 5111 is greater than The diameter of first ball sealer 42, the first ball sealer 42 can pass through the first axis through-hole that baffle ring 5111 enters the first inner sleeve 41, the Two ball sealers 52 are blocked by baffle ring 5111 and block the second axially extending bore, so that steam channel is further blocked, so that the second on-off The steam of 5 top of part can only pass through note after cutting off the second shear pin 53 and the second on-off part 5 is made to be moved to the second steam injection position Via annular space 3 and steam injection pipe, oil reservoir 200 recovers the oil steam ports 512 to the lower part.

It should be noted that the tool that the lower end surface of first axis through hole 411 can also be made circumferentially to be formed to contract There are the baffle ring 5111 of centre bore, diameter of the center-hole diameter less than the first ball sealer 42 of baffle ring 5111, the second axial pass-through holes 511 in undergauge shape tapered from top to bottom, and the bottom end internal diameter of first axis through hole 411 is straight less than the second ball sealer 52 Diameter, the bottom end internal diameter of first axis through hole 411 are greater than the diameter of the first ball sealer 42, enable the first ball sealer 42 across the Two axial pass-through holes 511 enter first axis through hole 411.

In a specific embodiment of embodiment, as shown in Fig. 2, stopper section 15 is the inner wall for being set to valve body 1 Annular convex platform on face, the internal diameter of annular convex platform less than the first inner sleeve 41 outer diameter so that the first inner sleeve 41 is in steam pressure It when being moved down under effect, is limited, cannot be continued to move to by annular convex platform, block steam drain 16 to avoid the first inner sleeve 41, To ensure that can pre-heated steam distributing pipe column can simultaneously to upper and lower two oil reservoirs simultaneously steam injection, in addition, the structure of annular convex platform Simply, convenient for the processing and manufacturing of valve body 1, and since annular convex platform and valve body 1 are integrally formed, making for annular convex platform has been effectively ensured Use intensity.

In another specific embodiment of embodiment, steam injection channel 11 is up big and down small stepped hole, and steam injection The lower inner diameter in channel 11 is less than the outer diameter of the first inner sleeve 41, and the step surface in steam injection channel 11 forms stopper section 15, so that first It when inner sleeve 41 moves down under the action of steam pressure, is limited, cannot be continued to move to by step surface, equally can be avoided One inner sleeve 41 block steam drain 16, ensure that can pre-heated steam distributing pipe column can simultaneously to upper and lower two oil reservoirs simultaneously steam injection.

In a specific embodiment of embodiment, as shown in Fig. 2, in order to enable steam to uniformly enter annular space 3, the side wall upper part of valve body 1 is circumferentially spaced to be equipped with multiple air intakes 12, it is preferable that multiple air intakes 12 are arranged at equal intervals, steam injection Mouthfuls 512 quantity is identical with the quantity of air intake 12 so that after the second inner sleeve 51 moves, each air intake 12 can by with its The steam injection mouth 512 of connection is connected with steam injection channel 11, so that steam can uniformly enter in annular space 3, in order to enable Steam in annular space 3 can be discharged as early as possible, multiple steam drains 16 are equipped with the lower sidewall of valve body 1 is circumferentially spaced, in annular space 3 Steam pass through the discharge rapidly of multiple steam drains 16, it is preferred that the quantity of steam drain 16 is identical as the quantity of air intake 12.

In a specific embodiment of embodiment, the first steam injection pipe 13 is arranged in parallel with the second steam injection pipe 14, with The first steam injection pipe 13 and the second steam injection pipe 14 is avoided to influence each other, in order to improve individually to the efficiency of 100 steam injection of top oil reservoir, edge The circumferentially-spaced of valve body 1 is equipped with multiple first steam injection pipes 13 and multiple second steam injection pipes 14, it is preferred that multiple first steam injection pipes 13 It is arranged at equal intervals, multiple second steam injection pipes 14 are arranged at equal intervals, so that before the first inner sleeve 41 is mobile, steam can pass through each the Two steam injection pipes 14 uniformly enter top oil reservoir 100 and are preheated, and after the first inner sleeve 41 is mobile, steam can pass through each first steam injection Pipe 13 is uniformly injected into top oil reservoir 100 and recovers the oil, to improve oil recovery efficiency.

In a kind of embodiment of the utility model, the both ends of housing 2 are welded on valve body 1, and the mode of welding is simple Reliably, and it can effectively ensure that the leakproofness of annular space 3.

In a kind of embodiment of the utility model, can pre-heated steam distributing pipe column further include top connection 6, top connection 6 Lower part is equipped with external screw thread, and the top of valve body 1 is equipped with internal screw thread, by the cooperation that is screwed on of external screw thread and internal screw thread, valve body 1 with above connect First 6 connect, and valve body 1 can be connected by top connection 6 with other component, also, since the inner wall of top connection 6 protrudes from valve body 1 Inner surface enables top connection 6 to play restriction effect to the first on-off part 4 and the second moving up for on-off part 5, avoids upper Mention can pre-heated steam distributing pipe column when, the first on-off part 4 and the second on-off part 5 fall off, and can pre-heated steam distributing valve 10 pass through it is upper Connector 6 connects with upper packer 20 so that can connection between pre-heated steam distributing valve 10 and upper packer 20 it is simple and convenient.

In a kind of embodiment of the utility model, can pre-heated steam distributing pipe column further include being connected to upper packer 20 The telescoping tube 40 of upper end, telescoping tube 40 can prevent removing seal for packer due to tubing string is by thermal stretching from losing packing effect, it is preferred that The instlated tubular of steam injection is connected on the top of telescoping tube 40.

Illustrate with reference to the accompanying drawing the utility model can pre-heated steam distributing pipe column the course of work:

As shown in Figure 1, Figure 2 and Figure 3, can the telescoping tube 40 of pre-heated steam distributing pipe column connect with oil pipe, and by under oil pipe It is put into the oil well of upper layer and lower layer steam injection, upper packer 20 is located at 100 top of top oil reservoir, and lower packet 30 is located at top oil reservoir Between 100 and bottom oil layer 200, the lower end in steam injection channel 11 is connected to bottom oil layer 200, the second end of the first steam injection pipe 13 and The second end of second steam injection pipe 14 is connected to top oil reservoir 100, and the first inner sleeve 41 is located at the first operating position, the second inner sleeve 51 Positioned at the first steam injection position, since the first inner sleeve 41 has blocked the first steam injection pipe 13, the second inner sleeve 51 has blocked air intake 12, because This, a part of steam enters bottom oil layer 200 via the lower end in steam injection channel 11 in injection steam injection channel 11, injects steam injection channel A part of steam in 11 enters top oil reservoir 100 via the second steam injection pipe 14, while to top oil reservoir 100 and bottom oil layer 200 are preheated, and after reaching scheduled pre- heat, put into the first envelope into the first axis through hole 411 of the first inner sleeve 41 Stifled ball 42, the first ball sealer 42 are tightly connected with first axis through hole 411, i.e. the first ball sealer 42 is by first axis through hole 411 block, and cooperate since the inner surface of the outer peripheral surface of the first inner sleeve 41 and valve body 1 seals, so that the first inner sleeve 41 and first Ball sealer 42 blocks steam injection channel 11, at this time since steam constantly injects in steam injection channel 11, causes to be located at the first inner sleeve 41 Pressure is continuously increased in the steam injection channel 11 on top, and when cutting pressure of the pressure increase to the first shear pin 43, first is cut It cuts pin 43 to be cut, the first inner sleeve 41 for being equipped with the first ball sealer 42 is moved downward under the action of steam pressure and ring Shape boss abuts, i.e., the first on-off part 4 is moved to the second operating position by the first operating position, at this point, the first steam injection pipe 13 with Steam injection channel 11 is connected to, since steam injection channel 11 is blocked by the first on-off part 4 and can not be injected steam, the second steam injection pipe 14 to lower layer It is blocked by the first on-off part 4, therefore, steam can only enter top oil reservoir 100 via the first steam injection pipe 13 and recover the oil；

After injection rate reaches design flow, the second ball sealer is put into the second axial pass-through holes 511 of the second inner sleeve 51 52, the second ball sealer 52 and the second axial pass-through holes 511 are tightly connected, i.e. the second ball sealer 52 is by the second axial pass-through holes 511 It blocks, and the inner surface of the outer peripheral surface of the second inner sleeve 51 and valve body 1 seals and cooperates, so that the second inner sleeve 51 and the second ball sealer 52 Also by the blocking in steam injection channel 11, steam can not be by the second on-off part 5, at this time since steam constantly injects steam injection channel 11 It is interior, cause the pressure in the steam injection channel 11 on 51 top of the second inner sleeve to be continuously increased, when pressure increase to the second shear pin When 53 cutting pressure, the second shear pin 53 is cut, and is equipped with the second inner sleeve 51 of the second ball sealer 52 in steam pressure Under the action of be moved downward to and abutted with the first inner sleeve 41, i.e., the second on-off part 5 is moved to the second steam injection by the first steam injection position Position, at this point, steam injection channel 11 is blocked simultaneously by the first on-off part 4 and the second on-off part 5, the first on-off part 4 blocks the first note Steam pipe 13, and in the state that the second on-off part 5 is located at the second steam injection position, the second on-off part 5 blocks the first steam injection pipe 13, note Steam ports 512 is connected with air intake 12, and therefore, steam injection mouth 512 and air intake 12 can only be passed through by injecting steam in steam injection channel 11 Into annular space 3, enters bottom oil layer 200 via the bottom of annular space 3, steam drain 16 and steam injection channel 11 and recover the oil.

In conclusion it is provided by the utility model can pre-heated steam distributing pipe column, by changing the first on-off part and second logical The position of broken piece, realizing steam injection initial stage preheats two general steam injections of oil reservoir, after reaching pre-heat effect, then is layered Steam injection reduces maximum pressure when boiler Initial operation, is conducive to the operation of boiler, and operating cost and operation will not be added difficult Degree.

The above descriptions are merely exemplary embodiments of the present utility model, the model being not intended to limit the utility model It encloses.Any those skilled in the art, made equivalent change under the premise of not departing from the conceptions and principles of the utility model Change and modify, should belong to the range of the utility model protection.And it should be noted that the utility model each component part It is not limited in above-mentioned overall applicability, each technical characteristic described in the specification of the utility model can select according to actual needs It selects one and individually uses or select the multinomial use that combines, therefore, the utility model covers and this crime in the nature of things The related other combinations of bright point and concrete application.

Claims (10)

1. one kind can pre-heated steam distributing pipe column, which is characterized in that it is described can pre-heated steam distributing pipe column include at least from top to bottom according to The upper packer of secondary connection, can pre-heated steam distributing valve and lower packet, it is described can pre-heated steam distributing valve include at least:

Valve body, have axially through steam injection channel, the upper packer and the lower packet are connected to institute's valve body Upper and lower ends, the external sealing shroud of the valve body is equipped with housing, and forms annular space between the housing and the valve body, described The side wall of valve body is from top to bottom successively arranged air intake, the first steam injection pipe, the second steam injection pipe, stopper section and steam drain, it is described into Steam ports and the steam drain are connected with the annular space, and the stopper section is located in the steam injection channel, the first steam injection pipe First end and one end of the second steam injection pipe be connected with the steam injection channel, the second end of the first steam injection pipe and The second end of the second steam injection pipe is along the outside for extending radially to the housing of the valve body；

On-off component comprising be set to can move in the valve body and along the axial seal of the valve body first from the bottom to top On-off part and the second on-off part, the first on-off part, which has, to be connected to the steam injection channel and blocks the of the first steam injection pipe One operating position and abutting second operating position of stopper section, are located at second working position in the first on-off part In the state of setting, the first on-off part blocks the steam injection channel and blocks the second steam injection pipe, the first steam injection pipe It is connected to the steam injection channel；The second on-off part is equipped with steam injection mouth, and the second on-off part, which has, is connected to the steam injection Channel simultaneously blocks the first steam injection position of the air intake and abuts the second steam injection position of the first on-off part, in institute It states the second on-off part to be located in the state of second steam injection position, the second on-off part blocks the first steam injection pipe, institute Steam injection mouth is stated to be connected with the air intake.

2. according to claim 1 can pre-heated steam distributing pipe column, which is characterized in that

The first on-off part includes the first inner sleeve and the first ball sealer, is placed at first operating position and leads in described first It crosses the first shear pin to connect with the valve body, and the outer peripheral surface of first inner sleeve and the inner surface sealing of the valve body are matched Close, first inner sleeve has the first axis through hole that is connected to the steam injection channel, first ball sealer can with it is described First axis through hole is tightly connected, described by the sealed connection of first ball sealer and the first axis through hole First inner sleeve can cut first shear pin and be moved to the second operating position by the first operating position；

The second on-off part includes the second inner sleeve and the second ball sealer, is placed in described second at first steam injection position by the Two shear pins connect with the valve body, and the inner surface of the outer peripheral surface of second inner sleeve and the valve body seals and cooperates, institute Stating the second inner sleeve has the second axial pass-through holes being connected to the steam injection channel, and first ball sealer can pass through described second Axial pass-through holes, second ball sealer can be tightly connected with second axial pass-through holes, and the steam injection mouth is set to described On the side wall of second inner sleeve, by the sealed connection of second ball sealer and second axial pass-through holes, in described second Set can cut second shear pin and be moved to the second steam injection position by the first steam injection position.

3. according to claim 2 can pre-heated steam distributing pipe column, which is characterized in that

The first axis through hole is in undergauge shape tapered from top to bottom, and the bottom end internal diameter of the first axis through hole is small In the diameter of first ball sealer.

4. according to claim 2 can pre-heated steam distributing pipe column, which is characterized in that

The baffle ring with a central hole that the lower end surface of second axial pass-through holes is circumferentially formed to contract, the baffle ring Center-hole diameter is less than the diameter of second ball sealer, and the center-hole diameter of the baffle ring is greater than first ball sealer Diameter.

5. according to claim 2 can pre-heated steam distributing pipe column, which is characterized in that

The stopper section is the annular convex platform being set on the inner wall of the valve body, and the internal diameter of the annular convex platform is less than described The outer diameter of first inner sleeve.

6. according to claim 2 can pre-heated steam distributing pipe column, which is characterized in that

The steam injection channel is up big and down small stepped hole, and the lower inner diameter in the steam injection channel is less than first inner sleeve The step surface of outer diameter, the steam injection channel forms the stopper section.

7. according to claim 2 can pre-heated steam distributing pipe column, which is characterized in that

The side wall upper part of the valve body is circumferentially spaced to be equipped with multiple air intakes, the quantity of the steam injection mouth and described into vapour The quantity of mouth is identical, and the lower sidewall of the valve body is circumferentially spaced to be equipped with multiple steam drains.

8. according to any one of claim 1 to 7 can pre-heated steam distributing pipe column, which is characterized in that

The first steam injection pipe is arranged in parallel with the second steam injection pipe, and circumferentially-spaced along the valve body is equipped with multiple described the One steam injection pipe and multiple second steam injection pipes.

9. according to any one of claim 1 to 7 can pre-heated steam distributing pipe column, which is characterized in that

It is described can pre-heated steam distributing valve further include top connection, the lower part of the top connection is equipped with external screw thread, the top of the valve body Equipped with internal screw thread, by the cooperation that is screwed on of the external screw thread and the internal screw thread, the valve body connects with the top connection, described Can pre-heated steam distributing valve connected by the top connection with the upper packer.

10. according to any one of claim 1 to 7 can pre-heated steam distributing pipe column, which is characterized in that

It is described can pre-heated steam distributing pipe column further include the telescoping tube for being connected to the upper end of the upper packer.