A kind of dispensing device and method for dispensing hot fluid

Abstract

The present invention belongs to the field of heavy oil exploitation, and discloses a multi-layer injection and graded controllable injection device and method for injecting hot fluid. The device comprises a steam injection column and a graded injection device, the latter comprising a shell, the bottom wall of which is sealedly connected to the bottom wall of the steam injection column, the top wall of which is sealedly connected to the outer peripheral wall of the steam injection column, a distance is formed between the outer peripheral wall of the shell and the outer peripheral wall of the steam injection column to form a gas / steam injection chamber, which is axially divided into a plurality of independent sub-gas / steam injection chambers, adjacent sub-gas / steam injection chambers can be selectively connected, each sub-gas / steam injection chamber corresponds to a different oil layer, each sub-gas / steam injection chamber can be selectively connected to the corresponding oil layer, so as to inject gas / steam into a certain oil layer alone, or inject gas / steam into multiple oil layers at the same time, or inject gas / steam into oil layers distributed from bottom to top from bottom to top or from top to bottom in sequence, and a gas hole is formed in the area of ​​the sub-gas / steam injection chamber located at the bottom of the steam injection column.

Description

Technical Field

[0001] The invention relates to the technical field of heavy oil production, and in particular to an injection device and method for injecting hot fluid. Background Art

[0002] Heavy oil resources are widely distributed around the world and have huge reserves. However, due to the high viscosity and poor fluidity of heavy oil, the development of heavy oil fields has been restricted. The overall development level of heavy oil resources is low, which affects the development process of heavy oil resources.

[0003] Based on the temperature-sensitive property of heavy oil viscosity, thermal recovery of heavy oil fields is one of the effective means. Steam injection technology has been proven to have good results in the development of heavy oil fields and has been widely used in oil fields. However, the current steam injection technology mostly adopts general injection and layered injection methods. For heavy oil reservoirs with severe heterogeneity, there is a phenomenon of steam channeling in high permeability layers and the low permeability layers cannot be injected. The use of general injection seriously affects the steam injection development effect of heavy oil fields; the existing layered injection methods mainly use sliding sleeve movement, packer plus injection valve, multiple heat injection bodies plus nozzles, eccentric layered steam distribution, parallel double-tube steam injection and other methods to achieve layered gas injection. However, these existing layered injection methods are difficult to achieve multi-layer injection and graded control of multi-layer injection at the same time. Summary of the invention

[0004] In order to simultaneously realize multi-layer injection and hierarchical control of the multi-layer injection, the present invention proposes an injection device and method for injecting hot fluid.

[0005] The device for injecting hot fluid according to the present invention comprises: an injection gas / steam pipe column and a graded injection device, wherein the graded injection device comprises a shell with a sealing sleeve arranged on the injection gas / steam pipe column, the bottom wall of the shell is sealed and fixedly connected to the bottom wall of the injection gas / steam pipe column, the top wall of the shell is sealed and fixedly connected to the outer peripheral wall of the injection gas / steam pipe column, a distance is formed between the outer peripheral wall of the shell and the outer peripheral wall of the injection gas / steam pipe column to form an injection gas / steam chamber between the outer peripheral wall of the shell and the outer peripheral wall of the injection gas / steam pipe column, and the injection gas / steam chamber is configured to be sealed along the injection gas / steam pipe column. The column is divided axially into a plurality of independent sub-gas / steam injection chambers, and adjacent sub-gas / steam injection chambers can be selectively connected, each sub-gas / steam injection chamber corresponds to a different oil layer, and each sub-gas / steam injection chamber can be selectively connected to the corresponding oil layer, so as to be used for injecting gas / steam into a certain oil layer alone, or for injecting gas into multiple oil layers at the same time, or for injecting gas / steam into oil layers distributed from bottom to top from bottom to top or from top to bottom in sequence, and the area of ​​the sub-gas / steam injection chamber at the bottom of the gas / steam injection pipe column is formed with pores.

[0006] Furthermore, the shell includes a lower base plate sealed and fixedly connected to the bottom end of the steam injection pipe column, an upper base plate sealed and fixedly connected to the outer peripheral wall of the steam injection pipe column, and N (N≥1) partition plates located between the upper base plate and the lower base plate, the partition plates sealed and fixedly connected between the outer peripheral wall of the gas / steam injection pipe column and the inner peripheral wall of the shell, so as to divide the steam injection chamber formed by the upper base plate, the lower base plate, the gas / steam injection pipe column and the shell into independent N+1 (N≥1) sub-gas / steam chambers, each partition plate is provided with a pressure control valve, and the area of ​​the outer peripheral wall of the shell corresponding to each sub-gas / steam chamber is provided with an injector, wherein adjacent sub-gas / steam chambers are selectively connected by opening and closing the pressure control valve, and each sub-gas / steam chamber is selectively connected to the corresponding oil layer through the injector.

[0007] Furthermore, the dispenser includes an injector pressure control valve located on its fluid injection channel, and each sub-gas / steam injection chamber is selectively connected to the corresponding oil layer through the opening and closing of the injector pressure control valve.

[0008] Furthermore, the outer peripheral wall of the shell is formed to have an outer wall and an inner wall which are spaced apart and sleeved together, and the dispenser is fixed between the outer wall and the inner wall.

[0009] Furthermore, a one-way valve is provided at the gas / steam hole to prevent the backflow of the hot injection fluid.

[0010] Furthermore, the spacing between adjacent partition plates is adjustable.

[0011] Furthermore, the gas / steam injection pipe column of the injection device for injecting the hot fluid is connected to other external gas / steam injection pipe columns through threads.

[0012] The method for injecting hot fluid according to the present invention comprises: enabling the hot injection fluid injected into the gas / steam injection column from top to bottom to flow from bottom to top after flowing out of the gas / steam injection column, and enabling the hot injection fluid flowing from bottom to top to inject gas / steam into a corresponding oil layer separately in different oil layer directions, or to inject gas / steam into corresponding multiple oil layers simultaneously in different oil layer directions, or to inject gas / steam into oil layers distributed from bottom to top from bottom to top or from top to bottom step by step.

[0013] Furthermore, it includes constructing a gas injection chamber outside the gas / steam injection pipe column, and dividing the gas / steam injection chamber into a plurality of sub-gas / steam chambers from bottom to top, so that each sub-gas injection chamber corresponds to a different oil layer, adjacent sub-gas / steam chambers can be selectively connected, and each sub-gas / steam chamber can be selectively connected to the corresponding oil layer, and the sub-gas / steam chamber located in the lowest area of ​​the steam pipe column is connected to the injection / steam pipe column.

[0014] Furthermore, adjacent sub-gas / steam injection chambers are selectively connected via a pressure control valve, and each sub-gas / steam injection chamber is selectively connected to the corresponding oil layer via an injector pressure control valve, and by controlling the opening and closing of each pressure control valve and each injector pressure control valve, the injection fluid can enter different sub-gas / steam injection chambers to inject gas / steam into a corresponding oil layer individually, or enter different sub-gas / steam injection chambers to inject gas / steam into multiple corresponding oil layers at the same time, or enter each sub-gas / steam injection chamber from bottom to top in turn, so as to inject gas / steam into the oil layers distributed from bottom to top step by step.

[0015] Furthermore, the method of controlling the opening and closing of each pressure control valve and each injector pressure control valve to allow the heat injection fluid to enter the sub-gas / steam injection chamber from bottom to top in sequence, so as to inject gas / steam into three oil layers distributed from bottom to top in sequence, comprises: injecting the heat injection fluid into the sub-gas / steam injection chamber located below the steam pipe column through the steam pipe column, and when the pressure in the sub-gas injection chamber below is greater than the preset pressure value of its injector pressure control valve, the injector pressure control valve is opened to inject gas / steam into the oil layer corresponding to the sub-gas injection chamber below; when the pressure in the sub-gas injection chamber below rises to a value greater than the preset pressure value of its pressure control valve, Its pressure control valve opens to allow the heat injection fluid to flow upward into the middle sub-gas / steam injection chamber. When the pressure in the middle sub-gas / steam injection chamber is greater than the preset pressure value of its injector pressure control valve, its injector pressure control valve opens to achieve injection to two oil layers. When the pressure in the secondary gas / steam injection chamber rises to greater than the preset pressure value of its pressure control valve, its pressure control valve opens to allow the heat injection fluid to flow upward into the upper sub-gas / steam injection chamber. When the pressure in the upper sub-gas / steam injection chamber is greater than the preset pressure value of its injector pressure control valve, its injector pressure control valve opens to achieve injection to three oil layers.

[0016] The device and method for injecting hot fluid of the present invention utilize the buoyancy characteristics of hot fluid to change the flow direction of hot fluid, changing the original downward flow to upward flow, so that the injection mode that can only be directly injected into the oil layer downward is changed to an injection mode of upward flow, and by controlling the connection relationship between each sub-gas / steam chamber and each sub-gas / steam chamber and the corresponding oil layer, the hot fluid using this injection mode can be selectively injected in a single layer or multiple layers or injected in stages, realizing multi-layer injection of hot fluid and graded control of multi-layer injection of hot fluid. The device and method for injecting hot fluid of the present invention can be used in processes such as graded steam injection in the oil field, such as steam injection displacement and multi-component hot fluid injection displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of a dispensing device for dispensing hot fluid according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0019] Figure 1 FIG. 2 shows the structure of a dispensing device 100 for dispensing hot fluid according to an embodiment of the present invention. Figure 1 As shown, the injection device 100 for injecting hot fluid comprises: a steam injection column 1 and a staged injection device 2, wherein the staged injection device 2 comprises a shell body sealedly mounted on the steam injection column 1, the bottom wall 22 of the shell body is sealed and fixedly connected to the bottom wall of the steam injection column 1, the top wall 21 of the shell body is sealed and fixedly connected to the outer peripheral wall of the steam injection column 1, a distance is formed between the outer peripheral wall 23 of the shell body and the outer peripheral wall of the steam injection column 1, so as to form an injection / steam chamber between the outer peripheral wall 23 of the shell body and the outer peripheral wall of the steam injection column 1, and the injection / steam chamber is structured to be divided into a plurality of independent sub-injection chambers along the axial direction of the gas / steam injection column 1 The gas / steam chamber 25 and adjacent sub-gas / steam chambers 25 can be selectively connected, each sub-gas / steam chamber 25 corresponds to a different oil layer, and each sub-gas / steam chamber 25 can be selectively connected with the corresponding oil layer, so as to inject gas / steam into a certain oil layer separately, or inject gas / steam into multiple oil layers at the same time, or inject gas into oil layers distributed from bottom to top step by step from bottom to top, or inject gas / steam into oil layer sections distributed from bottom to top step by step from top to bottom. The area of ​​the gas / steam injection pipe column 2 located at the bottom of the sub-gas / steam chamber 25 is formed with air holes 12.

[0020] It should be noted that the above-mentioned “oil layer” can be understood as completely different oil layers, and can also be understood as different layers of the same oil layer.

[0021] When the injection device 100 for injecting hot fluid according to the embodiment of the present invention is working, the injected hot fluid enters the sub-gas / steam chamber 25 located at the bottom through the gas injection / steam channel 11 of the gas / steam injection column 1 through the air hole 12. Since adjacent sub-gas / steam chambers 25 can be selectively connected, and each sub-gas / steam chamber 25 can be selectively connected to the corresponding oil layer, by controlling the connection between adjacent sub-gas / steam chambers 25 and between the sub-gas / steam chambers 25 and the corresponding oil layer segments, the direction of the hot fluid entering the bottom gas / steam chamber 25 can be controlled, so as to realize single-layer and multi-layer injection and graded control of multi-layer injection. For example, when a certain oil layer needs to be injected with gas / steam separately, the sub-gas / steam injection chamber 25 corresponding to the oil layer can be connected to the oil layer, and the sub-gas / steam injection chamber 25 can be connected to the lowermost sub-gas / steam injection chamber 25, while the sub-gas / steam injection chamber 25 corresponding to other oil layers is disconnected from the corresponding oil layers. Figure 1When the top oil layer shown in the figure is injected with gas / steam, the three independent sub-gas / steam injection chambers 25 can be connected, and the bottom and middle sub-gas / steam injection chambers 25 are not connected with their corresponding oil layers, and only the top sub-gas / steam injection chamber 25 is connected with its corresponding oil layer, so that the hot injection fluid in the gas / steam injection channel 11 enters the top sub-gas / steam injection chamber 25 through the bottom and middle sub-gas / steam injection chambers 25 in turn, and then is injected into the top oil layer corresponding to the sub-gas / steam injection chamber 25; when it is necessary to inject gas / steam into multiple oil layers at the same time, the sub-gas / steam injection chambers 25 corresponding to the multiple oil layers can be connected with the corresponding oil layers respectively, and these gas / steam injection chambers 25 are connected with the bottom sub-gas / steam injection chamber 25. For example, Figure 1 When the uppermost and middle oil layers shown are injected with gas / steam at the same time, the uppermost and middle sub-gas / steam injection chambers 25 can be connected to the corresponding oil layers at the same time, and the uppermost and middle sub-gas / steam injection chambers 25 can be connected to the lowermost sub-gas / steam injection chamber 25; when it is necessary to inject gas / steam into the oil layers distributed from bottom to top step by step from bottom to top, the lowermost sub-gas / steam injection chamber 25 can be connected to the lowermost oil layer first, so that the gas / steam in the gas / steam injection channel 11 enters the lowermost sub-gas / steam injection chamber 25 through the air hole 12. The hot fluid in the steam chamber 25 injects gas / steam into the lowermost oil layer. After the gas / steam injection into the lower oil layer is completed, the lowermost and middle sub-gas / steam injection chambers 25 are connected, and the middle sub-gas / steam injection chamber 25 and the middle oil layer are connected, so that the hot fluid injects gas / steam into the middle oil layer. After the gas / steam injection into the middle oil layer is completed, the uppermost and middle sub-gas / steam injection chambers 25 are connected, and the upper sub-gas / steam injection chamber 25 and the upper oil layer are connected, so that the hot fluid injects gas / steam into the upper oil layer.

[0022] The injection device 100 for injecting hot fluid in the embodiment of the present invention utilizes the buoyancy characteristics of hot fluid to change the flow direction of hot fluid, changing the original downward flow to upward flow, so that the injection method that can only be directly injected into the oil layer downward is changed to an injection method of upward flow, and by controlling the connection relationship between each sub-gas / steam chamber 25 and each sub-gas / steam chamber 25 and the corresponding oil layer, the hot fluid using this injection method can be selectively injected in a single layer or multiple layers or injected in stages, realizing multi-layer injection of hot fluid and graded control of multi-layer injection of hot fluid. The injection device 100 for injecting hot fluid in the embodiment of the present invention can be used in processes such as graded steam injection in the oil field, such as steam injection displacement and multi-component hot fluid injection displacement.

[0023] In such Figure 1In the preferred embodiment shown, the shell includes a lower base plate sealed and fixedly connected to the bottom end of the steam injection pipe column 1 and an upper base plate sealed and fixedly connected to the outer peripheral wall 23 of the steam injection pipe column 1, and N (N≥1) partition plates 24 located between the upper base plate and the lower base plate, the partition plates 24 are sealed and fixedly connected between the outer peripheral wall of the steam injection pipe column 1 and the inner peripheral wall of the shell 2 to divide the gas injection / steam chamber formed by the upper base plate, the lower base plate, the steam injection pipe column 1 and the outer peripheral wall 23 of the shell into independent N+1 (N≥1) sub-steam injection chambers 25, each of the partition plates 24 is provided with a pressure control valve 27, and the area of ​​the outer peripheral wall of the shell 2 corresponding to each sub-gas injection / steam chamber 25 is provided with an injector 26, wherein adjacent sub-gas injection / steam chambers 25 can be selectively connected by opening and closing the pressure control valve 27, and each sub-gas injection / steam chamber 25 can be selectively connected to the corresponding oil layer through the injector 26. Specifically, the dispenser 26 includes an injector pressure control valve 261 located on its fluid injection channel, and each sub-gas / steam injection chamber 25 is selectively connected to the corresponding oil layer through the opening and closing of the injector pressure control valve 261. In this embodiment, the above-mentioned single-layer injection, multi-layer injection and step-by-step injection are achieved by adjusting the opening and closing of the injector pressure control valve 261 and the pressure control valve 27 of each sub-gas / steam injection chamber 25.

[0024] Furthermore, the outer peripheral wall 23 of the shell is formed to have an outer wall and an inner wall which are spaced apart and sleeved together, and the dispenser 26 is fixed between the outer wall and the inner wall. This arrangement helps to improve the structural strength of the graded dispensing device 2 on the one hand, and facilitates the fixation of the dispenser 26 on the other hand, and also plays a role in protecting the dispenser 26.

[0025] In a preferred embodiment, a one-way valve (not shown in the figure) for preventing the backflow of the hot injection fluid may be provided at the air hole 12 .

[0026] According to the present invention, in a preferred embodiment, the spacing between adjacent partition plates 27 is adjustable. This setting is used to adjust the spatial size of different sub-gas injection chambers 25 so that they can more accurately correspond to the corresponding oil layer positions, and is also used to adjust the pressure and displacement of different sub-gas injection chambers 25 injected into the corresponding oil layers.

[0027] Furthermore, the gas / steam injection column 1 of the injection device 100 for injecting hot fluid can be connected to other external gas / steam injection columns through threads to achieve connection between the injection device 100 for injecting hot fluid and other external gas / steam injection columns.

[0028] The present invention also proposes a method for injecting hot fluid, such as Figure 1As shown, it includes: enabling the heat injection fluid injected into the steam pipe column 1 from top to bottom to flow from bottom to top after flowing out of the steam pipe column, and enabling the heat injection fluid flowing from bottom to top to perform gas injection into a corresponding oil layer separately in different oil layer directions, or to perform gas injection into corresponding multiple oil layers simultaneously in different oil layer directions, or to perform gas injection into oil layers distributed from bottom to top step by step from bottom to top, or to perform gas injection into oil layers distributed from bottom to top step by step from top to bottom.

[0029] The method for injecting hot fluid in the embodiment of the present invention utilizes the buoyancy characteristics of the hot fluid to change the flow direction of the hot fluid, changing the original downward flow to upward flow, so that the original injection method that can only be directly injected into the oil layer downward is changed to an injection method of upward flow, and the single-layer or multi-layer or graded injection of different oil layers is realized during the flow of the hot fluid from bottom to top. The method for injecting hot fluid in the embodiment of the present invention can be used in processes such as graded steam injection in the petroleum field, such as steam injection displacement and multi-element hot fluid injection displacement.

[0030] Specifically, the method for injecting hot fluid includes constructing a gas injection chamber outside the steam column 1, and dividing the gas injection / steam chamber into a plurality of sub-gas injection / steam chambers 25 from bottom to top, so that each sub-gas injection / steam chamber 25 corresponds to a different oil layer, and adjacent sub-gas injection / steam chambers 25 can be selectively connected, and each sub-gas injection / steam chamber 25 can be selectively connected with the corresponding oil layer, and the sub-gas injection / steam chamber 25 located in the lowermost area of ​​the steam column 1 is connected with the steam column 1. The method controls the connection relationship between each sub-gas injection chamber 25 and each sub-gas injection / steam chamber 25 and the corresponding oil layer, so that the hot injection fluid using this injection method can be selectively injected in a single layer, multiple layers or in stages, thereby realizing multi-layer injection of the hot injection fluid and staged control of the multi-layer injection of the hot injection fluid.

[0031] Furthermore, adjacent sub-gas / steam injection chambers 25 are selectively connected through pressure control valves 27, and each sub-gas / steam injection chamber 25 is selectively connected to the corresponding oil layer through the dispenser pressure control valve 261. By controlling the opening and closing of each pressure control valve 27 and each dispenser pressure control valve 261, the injection fluid can enter different sub-gas / steam injection chambers 25 to inject gas / steam into a corresponding oil layer alone, or enter different sub-gas / steam injection chambers 25 to inject gas / steam into corresponding multiple oil layers at the same time, or enter each sub-gas / steam injection chamber 25 from bottom to top in order to inject gas / steam into the oil layers distributed from bottom to top in order. The gas / steam injection process has been introduced above and will not be repeated here.

[0032] It should be noted that the number of sub-gas / steam injection chambers 25 is designed according to reservoir conditions (such as different heterogeneities) and process requirements, and the pressure of the pressure control valve 27 and the injector pressure control valve 261 of different layers are set in combination with the gas / steam injection demand. This can realize the control of the opening and closing states of different sub-gas / steam injection chambers 25, thereby realizing the selection of gas / steam injection layers and on-demand gas / steam injection regulation of different layers.

[0033] In a preferred embodiment, Figure 1 As shown, by controlling the opening and closing of each pressure control valve 27 and each injection device pressure control valve 261, the method for sequentially injecting gas / steam into three oil layers distributed from bottom to top to realize the heat injection fluid entering the sub-gas / steam chamber 25 from bottom to top includes: injecting the heat injection fluid into the sub-gas / steam chamber 25 located below the steam column 1 through the steam column 1, when the pressure in the sub-gas / steam chamber below is greater than the preset pressure value of its injection device pressure control valve 261, the injection device pressure control valve 261 is opened to realize steam injection into the oil layer corresponding to the sub-gas / steam chamber 25 below; when the pressure in the sub-gas / steam chamber below rises to a value greater than the preset pressure value of its pressure control valve 27, its pressure control valve 261 is opened. The control valve 27 is opened to allow the hot fluid to enter the middle sub-gas / steam chamber 25 upward. When the pressure in the middle sub-gas / steam chamber 25 is greater than the preset pressure value of its injector pressure control valve 261, its injector pressure control valve 261 is opened to achieve injection to two oil layers; when the pressure in the middle sub-gas / steam chamber 25 rises to a value greater than the preset pressure value of its pressure control valve 27, its pressure control valve 27 is opened to allow the hot fluid to enter the upper sub-gas / steam chamber 25 upward. When the pressure in the upper sub-gas / steam chamber 25 is greater than the preset pressure value of its injector pressure control valve 261, its injector pressure control valve 261 is opened to achieve injection to three oil layers.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A dispensing device for dispensing hot fluid, characterized in that: include: Gas / steam injection column and graded injection device, the graded injection device comprises a shell body sealedly sleeved on the gas / steam injection column, the bottom wall of the shell body is sealed and fixedly connected to the bottom wall of the gas / steam injection column, the top wall of the shell body is sealed and fixedly connected to the outer peripheral wall of the gas / steam injection column, a distance is formed between the outer peripheral wall of the shell body and the outer peripheral wall of the gas / steam injection column, so as to form a gas / steam chamber between the outer peripheral wall of the shell body and the outer peripheral wall of the gas / steam injection column, the gas / steam chamber is configured to be inserted along the gas / steam injection column The column is axially divided into a plurality of independent sub-gas / steam injection chambers, and adjacent sub-gas / steam injection chambers can be selectively connected, each of the sub-gas / steam injection chambers corresponds to a different oil layer, and each of the sub-gas / steam injection chambers can be selectively connected to the corresponding oil layer, so as to inject gas / steam into a certain oil layer alone, or to inject gas into multiple oil layers at the same time, or to inject gas into oil layers distributed from bottom to top from bottom to top or from top to bottom in sequence, and pores are formed in the area of ​​the sub-steam injection chamber at the bottom of the gas / steam injection pipe column.

2. The device for dispensing hot fluid according to claim 1, characterized in that: The shell includes a lower base plate sealed and fixedly connected to the bottom end of the gas / steam injection pipe column, an upper base plate sealed and fixedly connected to the outer peripheral wall of the gas / steam injection pipe column, and N (N≥1) partition plates located between the upper base plate and the lower base plate, the partition plates sealed and fixedly connected between the outer peripheral wall of the gas / steam injection pipe column and the inner peripheral wall of the shell, so as to divide the gas / steam chamber formed by the upper base plate, the lower base plate, the gas / steam injection pipe column and the shell into independent N+1 (N≥1) sub-gas / steam chambers, each of the partition plates is provided with a pressure control valve, and the area of ​​the outer peripheral wall of the shell corresponding to each of the sub-gas / steam chambers is provided with an injector, wherein adjacent sub-gas / steam chambers are selectively connected by opening and closing the pressure control valve, and each sub-gas / steam chamber is selectively connected to the corresponding oil layer through the injector.

3. The device for dispensing hot fluid according to claim 2, characterized in that: The dispenser includes an injector pressure control valve located on its fluid injection channel, and each of the sub-gas / steam injection chambers is selectively connected to the corresponding oil layer through the opening and closing of the injector pressure control valve.

4. The device for dispensing hot fluid according to claim 2, characterized in that: The outer peripheral wall of the shell is formed to have an outer wall and an inner wall which are spaced apart and sleeved together, and the dispenser is fixed between the outer wall and the inner wall.

5. The device for dispensing hot fluid according to any one of claims 1 to 4, characterized in that: A one-way valve is arranged at the air hole to prevent the hot injection fluid from flowing back.

6. The device for dispensing hot fluid according to claim 2, characterized in that: The distance between adjacent partition plates is adjustable.

7. A method for dispensing a hot fluid, using the dispensing device for dispensing a hot fluid according to any one of claims 1 to 6, characterized in that: include: The hot fluid injected into the gas / steam injection column from top to bottom can flow from bottom to top after flowing out of the gas / steam injection column, and the hot fluid flowing from bottom to top can be used to inject gas / steam into a corresponding oil layer separately in different oil layer directions, or to inject gas / steam into corresponding multiple oil layers simultaneously in different oil layer directions, or to inject gas / steam into oil layers distributed from bottom to top from bottom to top or from top to bottom in sequence; the injection method for injecting hot fluid also includes constructing a gas / steam injection chamber outside the gas / steam injection column, and dividing the gas / steam injection chamber into a plurality of sub-gas / steam chambers in sequence from bottom to top, so that each of the sub-gas / steam chambers corresponds to a different oil layer, and adjacent sub-gas / steam chambers can be selectively connected, and each of the sub-gas / steam chambers can be connected to each other. The steam chamber is selectively connected to the corresponding oil layer, and the sub-gas injection / steam chamber located in the lowermost area of ​​the gas / steam injection pipe column is connected to the gas / steam injection pipe column; the adjacent sub-gas injection / steam chambers are selectively connected through a pressure control valve, and each sub-gas injection / steam chamber is selectively connected to the corresponding oil layer through an injector pressure control valve, and the opening and closing of each pressure control valve and each injector pressure control valve are controlled to realize that the hot fluid enters different sub-gas injection / steam chambers to inject gas / steam into a corresponding oil layer separately, or enters different sub-gas injection / steam chambers to inject gas / steam into corresponding multiple oil layers at the same time, or enters each sub-gas injection / steam chamber from bottom to top in turn, so as to inject gas / steam into the oil layers distributed from bottom to top in turn.

8. The method for dispensing hot fluid according to claim 7, characterized in that: The method of controlling the opening and closing of each of the pressure control valves and each of the pressure control valves of the dispenser to allow the hot fluid to enter the sub-gas / steam injection chamber from bottom to top in sequence, so as to inject gas / steam into three oil layers distributed from bottom to top in sequence and step by step, comprises: injecting the hot injection fluid into the sub-gas / steam injection chamber located below the gas / steam injection pipe column through the gas / steam injection pipe column, when the pressure in the sub-gas / steam injection chamber below is greater than the preset pressure value of the pressure control valve of the dispenser, the pressure control valve of the dispenser is opened to inject steam into the oil layer corresponding to the sub-gas / steam injection chamber below; when the pressure in the sub-gas / steam injection chamber below is increased to a value greater than the preset pressure value of the pressure control valve of the dispenser, the pressure control valve of the dispenser is opened to inject steam into the oil layer corresponding to the sub-gas / steam injection chamber below; when the pressure in the sub-gas / steam injection chamber below is increased to a value greater than the preset pressure value of the pressure control valve of the dispenser, the pressure control valve of the dispenser is opened to inject steam into the oil layer corresponding to the sub-gas / steam injection chamber below; When the pressure in the middle gas / steam chamber reaches the preset pressure value, its pressure control valve opens to allow the hot fluid to enter the middle sub-gas / steam chamber upward; when the pressure in the middle sub-gas / steam chamber is greater than the preset pressure value of its injector pressure control valve, its injector pressure control valve opens to achieve injection to two oil layers; when the pressure in the middle gas / steam chamber rises to greater than the preset pressure value of its pressure control valve, its pressure control valve opens to allow the hot fluid to enter the upper sub-gas / steam chamber upward; when the pressure in the upper sub-gas / steam chamber is greater than the preset pressure value of its injector pressure control valve, its injector pressure control valve opens to achieve injection to three oil layers.

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