Thickened oil injection and production heat insulation telescopic device

Abstract

The invention discloses a thickened oil injection and production heat insulation telescopic device, relates to the technical field of oil production operation, and aims to optimize the pumping process of high-temperature steam in a thickened oil thermal production process, and based on a heat insulation oil pipe, the tail end position of the heat insulation oil pipe is improved to obtain a pressure passive telescopic structure. Firstly, air pressure pumped by high-temperature steam is used as power to drive a kinetic energy sleeve to rotate at a constant speed in a directional mode, on one hand, steam pressure is preliminarily reduced, and on the other hand, heat exchange between steam and thickened oil can be promoted through the vibration sense and the vibration effect generated by ball hitting during rotation of a curved linkage rod, and transfer of steam heat to the deep portion of a stratum is accelerated; secondly, the steam pressure serves as power to drive the sliding ring sleeve set to conduct adaptive sliding, the essence is that in the non-directional sliding process of the kinetic energy sleeve, the steam pump-out position is changed through the similar telescopic action, and on the basis that the negative influence of the steam pressure on the bottom layer structure is reduced, the problem of high-pressure accumulation is mainly avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of oil production operations, and particularly relates to a heat insulation and telescopic device for heavy oil injection and production. Background Technique

[0002] As an optimized technology for conventional oil extraction, the heavy oil thermal recovery technology can refer to the relevant content involved in the publication number CN105626021A. Its essence is to inject high-temperature and high-pressure steam into the heavy oil layer, and use heat to reduce the viscosity of heavy oil and improve its fluidity. Specifically, it utilizes the high heat insulation performance and structural characteristics of heat insulation tubing.

[0003] Taking the supercritical steam technology (publication number CN110043235A) as an example, the heating range can be expanded to reduce the impact of local high-pressure concentration on the formation. However, the environment of the heavy oil layer is relatively complex. Taking in-situ production as an example, there is a conversion between the vapor phase and the liquid phase after pumping steam. Especially in the initial stage of steam flooding, the steam phase occupies the pore space and forms a displacement driving force, resulting in a significant increase in local pressure. The liquid water formed by steam condensation will increase the formation fluid saturation and reduce the steam permeability, which may cause a decrease in the pressure conduction efficiency, resulting in uneven formation pressure distribution. Thus, it is manifested as obvious pressure fluctuations at the injection well and production well, and there are problems such as the expansion of the formation rock due to heat, uneven local stress distribution, and possible induction of formation deformation or casing damage. If steam is pumped in with constant parameters (steam temperature, flow rate, and flow), it will exacerbate the non-uniformity of the formation structure or the pressure environment in the heavy oil layer. For this, the present invention proposes a solution. Summary of the Invention

[0004] The purpose of the present invention is to provide a heat insulation and telescopic device for heavy oil injection and production. For the process of pumping steam in heavy oil exploitation, because there is a conversion process between the vapor phase and the liquid phase, there are accompanying changes in pressure and temperature. Especially when forming a hot water zone (liquid phase), there are obvious pressure fluctuations, which exacerbate the uneven stress distribution of the heavy oil layer and the formation structure, and may induce problems such as formation deformation or casing damage.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A heat insulation and telescopic device for heavy oil injection and production is applied at the end position of the heat insulation tubing, and includes an outer casing, a kinetic energy casing, an inner casing, and a fixed casing. The inner casing is arranged between the inner wall of the outer casing and the outer wall of the kinetic energy casing. On the outer wall position of the kinetic energy casing, there is a set of slip ring sleeves arranged linearly and equidistantly along the length direction of the outer casing, and an internal leakage groove corresponding to the set of slip ring sleeves is opened on the kinetic energy casing; The set of slip ring sleeves consists of an elastic ring and two slip cylinders. The elastic ring is installed in the middle position between the two slip cylinders. The slip cylinders are sleeved on the outer wall position of the kinetic energy casing, and a steam leakage cavity is opened on the inner wall position of the slip cylinder far away from the elastic ring; On the outer wall of the kinetic energy sleeve and the inner wall of the outer sleeve, there are blocking blocks corresponding to the internal leakage grooves and the steam discharge cavities. On the direction corresponding to the inner wall of the outer sleeve of the blocking block, there is a passive pressing piece, and a limiting sleeve corresponding to the blocking block is installed on the inner sleeve.

[0006] It is further set that: a fixed seat is installed at the position of the inner wall at one end of the outer sleeve. The fixed seat is fixedly connected to the fixed sleeve, and the fixed seat is fixedly connected to the inner sleeve. And there is an eddy current fan group between the fixed sleeve and the kinetic energy sleeve. The kinetic energy sleeve is rotationally connected to the fixed sleeve through the eddy current fan group, and the kinetic energy sleeve is rotationally connected to the inner sleeve through the eddy current fan group.

[0007] It is further set that: the eddy current fan group is composed of an eddy current fan rod, a curved connecting rod and two support rings. The two support rings are respectively installed at the positions of the inner walls of the fixed sleeve and the kinetic energy sleeve. The eddy current fan rod is rotationally connected to the support ring in the fixed sleeve and is fixedly connected to the support ring in the kinetic energy sleeve.

[0008] It is further set that: both ends of the curved connecting rod are respectively installed on the eddy current fan rod and the kinetic energy sleeve, and the curved connecting rod is in a continuously right-angled bending shape. A collar is rotationally installed at the horizontal position of the curved connecting rod, and a collision ball group is installed under the collar.

[0009] It is further set that: springs corresponding to the sliding ring sleeve group are installed at the internal positions at both ends of the inner sleeve.

[0010] It is further set that: the steam discharge cavities in two adjacent positions form a steam discharge ring, and the cross-section of the steam discharge ring is in a curved arch shape along the direction deviating from the outer sleeve.

[0011] It is further set that: the lower end of the limiting sleeve matches the steam discharge ring. A notch corresponding to the limiting sleeve is opened on the sliding cylinder. A guide rod is installed on the blocking block. The passive pressing piece matches the inner wall of the outer sleeve, and the passive pressing piece is connected to the blocking block through the guide rod. Both ends of the guide rod are slidably connected to the outer sleeve and the kinetic energy sleeve respectively.

[0012] It is further set that: the steam discharge cavity is arranged at the middle position of the internal leakage groove.

[0013] The present invention has the following beneficial effects: 1. Based on the improvement of the heat-insulating tubing in the heavy oil thermal recovery process, the device proposed by the present invention is mainly installed at the end position of the heat-insulating tubing as a steam pumping structure. Specifically, the kinetic energy sleeve inside is improved. The kinetic energy sleeve has the ability to rotate relative to the fixed sleeve, and based on the eddy current fan group and powered by the air pressure when steam is pumped in, it drives the kinetic energy sleeve to rotate at a constant speed and in a fixed direction. On the one hand, it is used to reduce the pressure of high-temperature steam pumped into the heavy oil layer. On the other hand, it is mainly used to cooperate with the curved connecting rod that rotates synchronously with the eddy current fan group. When the curved connecting rod rotates synchronously, the billiard ball group inside will hit the kinetic energy sleeve randomly to generate vibration force, and the vibration force is transmitted to the heavy oil layer through the vibration sensing transmission process of the overall structure. The vibration may promote the more uniform mixing of steam and heavy oil through physical perturbation, similar to how a swirl mixing device improves the contact efficiency between the viscosity reducer and crude oil by stirring, and it can also promote the heat exchange between steam and heavy oil, accelerating the transfer of steam heat to the deep part of the formation; 2. The key lies in the slip ring sleeve group arranged on the outer wall of the kinetic energy sleeve. The sliding cylinders on it have the ability to slide on the outer wall of the kinetic energy sleeve, but under the action of springs and elastic rings, each slip ring sleeve group is ensured to be in contact with each other, so as to form a steam discharge ring with the steam discharge cavity. The high-temperature steam pumped into the kinetic energy sleeve can only be pumped out from the inner discharge groove and retained in the steam discharge ring. The pressure when steam is pumped in is used again to drive the sliding cylinders to perform random sliding actions, which can further consume the pressure of the high-temperature steam pumped in. The key is that when cooperating with high-temperature steam, each slip ring sleeve group forms a telescopic-like action to change the steam pumping position from the kinetic energy sleeve. Its key purpose is to avoid the "high-pressure accumulation" at local positions on the outer wall of the outer sleeve when continuously pumping out steam, and "distribute" the high-temperature steam pumping pressure through the method of "lowering the excessive", reducing the negative impact on the heavy oil layer and even the bottom layer caused by uneven local stress distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of a heavy oil injection and production heat-insulating telescopic device proposed by the present invention; Figure 2 It is a schematic internal structure diagram of the outer sleeve in the present invention; Figure 3 In the present invention Figure 1 Cross-sectional view; Figure 4 In the present invention Figure 2 Schematic internal structure diagram of the inner sleeve; Figure 5 This is the exploded view of the slip ring sleeve set in the present invention; Figure 6 This is the present invention Figure 3 The enlarged schematic view of part A; Figure 7 This is the present invention Figure 3 The enlarged schematic view of part B.

[0016] In the figure: 1. Outer sleeve; 2. Inner sleeve; 3. Kinetic energy sleeve; 301. Inner leakage groove; 4. Fixed seat; 5. Eddy current fan group; 6. Fixed sleeve; 7. Curved connecting rod; 8. Billiard ball group; 9. Spring; 10. Slip ring sleeve set; 1001. Slip cylinder; 1002. Elastic ring; 1003. Steam discharge cavity; 11. Passive pressing piece; 12. Plug; 13. Limiting sleeve. Specific embodiments

[0017] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment 1: For the process of steam injection in heavy oil exploitation, since there is a conversion process between the vapor phase and the liquid phase, it is accompanied by changes in pressure and temperature. Especially when forming a hot water zone (liquid phase), there are obvious pressure fluctuations, which exacerbate the uneven stress distribution in the heavy oil layer and the formation structure, and may induce problems such as formation deformation or casing damage. For this, the following technical solutions are proposed: Referring to Figures 1-7 , in this embodiment, a heavy oil injection and production heat insulation telescopic device is applied to the end position of the heat insulation oil pipe, including an outer sleeve 1, a kinetic energy sleeve 3, an inner sleeve 2 and a fixed sleeve 6. The inner sleeve 2 is arranged between the inner wall of the outer sleeve 1 and the outer wall of the kinetic energy sleeve 3. On the outer wall of the kinetic energy sleeve 3, a slip ring sleeve set 10 is linearly and equidistantly arranged along the length direction of the outer sleeve 1, and an inner leakage groove 301 corresponding to the slip ring sleeve set 10 is opened on the kinetic energy sleeve 3; The slip ring sleeve set 10 is composed of an elastic ring 1002 and two slip cylinders 1001. The elastic ring 1002 is installed in the middle position between the two slip cylinders 1001. The slip cylinder 1001 is sleeved on the outer wall of the kinetic energy sleeve 3, and a steam discharge cavity 1003 is opened on the inner wall of the slip cylinder 1001 away from the elastic ring 1002; A blocking block 12 corresponding to an internal leakage groove 301 and a steam discharge cavity 1003 is provided between the outer wall of the kinetic energy sleeve 3 and the inner wall of the outer sleeve 1. A passive pressing piece 11 is provided in the direction of the blocking block 12 corresponding to the inner wall of the outer sleeve 1. A limiting sleeve 13 corresponding to the blocking block 12 is installed on the inner sleeve 2. A fixed seat 4 is installed at one end inner wall position of the outer sleeve 1. The fixed seat 4 is fixedly connected to the fixed sleeve 6 and the fixed seat 4 is fixedly connected to the inner sleeve 2. And an eddy current fan group 5 is provided between the fixed sleeve 6 and the kinetic energy sleeve 3. The kinetic energy sleeve 3 is rotationally connected to the fixed sleeve 6 through the eddy current fan group 5, and the kinetic energy sleeve 3 is rotationally connected to the inner sleeve 2 through the eddy current fan group 5.

[0019] Basic principle: A simple description of heavy oil thermal recovery is as follows: By injecting high-temperature steam or hot water (usually in the temperature range of 150 - 350 °C) into the formation, the heat energy is transferred to the heavy oil layer, causing the viscosity of the crude oil to decrease and detach from the rock surface. At the same time, the thermal expansion of the steam can form an internal driving force in the formation, pushing the crude oil to flow towards the production well. Its essence is to reduce the viscosity of heavy oil and improve its fluidity. Among them, heat-insulating tubing and a supporting steam pump system are mainly used. The heat-insulating tubing, as the flow channel structure of high-temperature steam, is mainly used for heat insulation to avoid heat exchange and temperature reduction during the flow of high-temperature steam. This part will not be elaborated much. The key of the present invention lies in the improvement of the end position of the heat-insulating tubing to Figure 1 take... as an example. Its essence is used as a high-temperature steam pumping structure. Combined with Figure 3 it is described that high-temperature steam can only enter the kinetic energy sleeve 3 from the fixed sleeve 6, and then be pumped out from the internal leakage groove 301, and finally be ejected through the air port on the outer sleeve 1. This part belongs to the basic content of the present invention.

[0020] Embodiment 2: The operation process of the kinetic energy sleeve when pumping high-temperature steam is described as follows: The eddy current fan group 5 is composed of an eddy current fan rod, a curved connecting rod 7 and two support rings. The two support rings are respectively installed at the inner wall positions of the fixed sleeve 6 and the kinetic energy sleeve 3. The eddy current fan rod is rotationally connected to the support ring in the fixed sleeve 6 and the eddy current fan rod is fixedly connected to the support ring in the kinetic energy sleeve 3. The two ends of the curved connecting rod 7 are respectively installed on the eddy current fan rod and the kinetic energy sleeve 3, and the curved connecting rod 7 is in a continuous right-angle bending shape. A collar is rotationally installed at the horizontal position of the curved connecting rod 7, and a collision ball group 8 is installed under the collar.

[0021] Scheme description: Taking the technical content in Embodiment 1 as an example, the conventional high-temperature steam pumping methods are mostly the same. However, the present invention first describes the process when high-temperature steam is pumped into the kinetic energy sleeve 3. Among them, the fixed sleeve 6 is fixedly connected to the outer sleeve 1, and there is already a rotational ability between the fixed sleeve 6 and the kinetic energy sleeve 3. Therefore, an eddy current fan group 5 is provided between the two to Figure 4For example, the eddy current fan group 5 is composed of an eddy current fan rod, a curved connecting rod 7 and two support rings. After high-temperature steam is pumped into the kinetic energy sleeve 3, the eddy current fan rod will rotate under the action of the air flow. Therefore, the installation method of the eddy current fan rod and the two support rings is restricted to ensure that the eddy current fan rod and the fixed sleeve 6 maintain rotation. This can be directly understood as: under the action of the steam air flow, the kinetic energy sleeve 3 will also rotate synchronously. The key lies in the curved connecting rod 7 that rotates synchronously. The curved connecting rod 7 is not a straight rod, but a continuously bent type. Taking Figure 3 as an example, it is ensured that the bending is carried out at 90°. Therefore, a collar is added to the horizontal position at each bending point. The collar rotates with the curved connecting rod 7, and the collar is connected to the billiard ball group 8 by a straight rod. The billiard ball group 8 is essentially a metal ball sleeve, and several metal balls can be added inside it. The metal balls can move freely inside the metal ball sleeve. Then, when the curved connecting rod 7 rotates, the billiard ball group 8 will also rotate irregularly. Its essence is to ensure that the billiard ball group 8 impacts the inner wall of the kinetic energy sleeve 3 in an indefinite direction. Through the transmission process of the kinetic energy sleeve 3 and the inner sleeve 2, a vibration feeling will also be generated on the outer sleeve 1. The main manifestations of applying vibration when pumping steam in heavy oil thermal recovery are as follows: The vibration effect can promote the heat exchange between steam and heavy oil, accelerate the transfer of steam heat to the deep part of the formation. Since the viscosity of heavy oil is highly sensitive to temperature, improving the heat conduction efficiency helps to more quickly reduce the viscosity of crude oil and enhance its fluidity, thereby improving the steam displacement effect; Vibration may promote the more uniform mixing of steam and heavy oil through physical disturbance, similar to the way a swirl mixing device improves the contact efficiency between the viscosity reducer and crude oil by stirring, thereby strengthening the viscosity reduction effect; High-frequency vibration may relieve the pore blockage caused by tiny solid particles or asphaltene deposition, similar to the mechanism of thermal action to remove bottom-hole pollution, thereby expanding the steam sweep range and improving the reservoir utilization degree; It should also be noted that: when the kinetic energy sleeve 3 rotates under the action of the air pressure of high-temperature steam air flow, it is mainly used to consume part of the pressure of high-temperature steam. Because in heavy oil thermal recovery, temperature is mainly utilized, and the high-pressure environment of steam will also have a negative impact on the heavy oil layer or the bottom structure. The key content of this embodiment is to initially reduce the pressure of high-temperature steam and promote the heat conduction process.

[0022] Embodiment 3: The slip ring sleeve group in Embodiment 1 is described as follows: Springs 9 corresponding to the slip ring sleeve groups 10 are installed at the inner positions at both ends of the inner sleeve 2. The steam discharge cavities 1003 in two adjacent positions form a steam discharge ring. The cross-section of the steam discharge ring is in a curved arch shape along the direction biased towards the outer sleeve 1. The lower end of the limiting sleeve 13 matches the steam discharge ring. Notches corresponding to the limiting sleeve 13 are provided on the sliding cylinder 1001. A guide rod is installed on the blocking block 12. The passive pressing piece 11 matches the inner wall of the outer sleeve 1, and the passive pressing piece 11 is connected to the blocking block 12 through the guide rod. Both ends of the guide rod are slidably connected to the outer sleeve 1 and the kinetic energy sleeve 3 respectively. The steam discharge cavity 1003 is arranged at the middle position of the inner discharge groove 301.

[0023] Scheme description: Description of the conventional heavy oil thermal recovery process: When the continuously pumped high-temperature steam is pumped out from the outer sleeve 1, due to stable steam injection, it may cause uneven formation pressure distribution, energy attenuation in some areas at the end of the cycle, and it is difficult for stable steam flooding to effectively cover the low-permeability areas between wells, forming a "dead oil zone". The residual crude oil has a high viscosity and poor fluidity, resulting in limited recovery rate. Therefore, in this invention, the slip ring sleeve group 10 is optimized based on the kinetic energy sleeve 3, combined with Figure 3 and Figure 5 Description: After sleeving multiple slip ring sleeve groups 10 on the kinetic energy sleeve 3, mainly using the dual elastic effects of the elastic ring 1002 and the spring 9 to ensure that each slip ring sleeve group 10 is in full contact, so as to form a steam discharge ring by combining two steam discharge cavities 1003, and referring to Figure 7 Description: Since the steam discharge ring always corresponds to the inner discharge groove 301, the high-temperature steam pumped into the kinetic energy sleeve 3 will continuously be pumped into the steam discharge ring, which will generate a lateral thrust on the sliding cylinder 1001. Referring to Figure 6 Description: Because the limiting sleeve 13 installed on the inner sleeve 2 serves as the sliding structure of the blocking block 12 and can also serve as the limiting structure of the two sliding cylinders 1001, ensuring that the two sliding cylinders 1001 can only slide in the opposite directions. It can be directly understood that the sliding process of the two sliding cylinders 1001 determines the opening of the steam discharge ring, and the opening diameter is proportional to the steam pumping pressure. After the high-temperature steam is continuously pumped into the heavy oil layer, when the problem of uneven stress such as "high-pressure accumulation" appears in a local position of the outer sleeve, then the high-temperature steam is difficult to be pumped out from the steam discharge ring corresponding to this part and can only be pumped out from the steam discharge rings at other positions first, mainly playing the role of "pressure distribution"; And combined with Figure 6Explanation: When high-temperature steam is pumped out from the steam discharge ring, it mainly pushes the blocking block 12 outward to ensure the pumping process of high-temperature steam. However, when continuously pumping high-temperature steam, an obvious hot water layer will be generated, and hot water or viscous oil with reduced viscosity will also seep from the outer casing 1 into the middle position between the outer casing 1 and the inner casing 2. However, this liquid phase of hot water or viscous oil mainly generates an inward pressure on the passive pressing piece 11, which will also "hinder" the pumping process of high-temperature steam and even directly block the limiting sleeve 13. The key is to utilize the liquid phase to cooperate with the pressure of the high-temperature steam pumping to reduce the probability or the degree of influence of stress unevenness when pumping high-temperature steam.

[0024] In summary: Optimize the pumping process of high-temperature steam in the heavy oil thermal recovery process. Based on the heat-insulating oil pipe, improve its end position to obtain a pressure passive telescopic structure. First, use the air pressure of the high-temperature steam pumping as the power to drive the kinetic energy sleeve to rotate at a constant speed and in a fixed direction. On the one hand, it initially reduces the steam pressure. The key is to utilize the vibration generated by the impact ball when the curved connecting rod rotates. The vibration effect can promote the heat exchange between the steam and the heavy oil and accelerate the transfer of steam heat to the deep part of the formation. Secondly, use the steam pressure as the power to drive the slip ring sleeve group to perform adaptive sliding. Its essence is that during the indefinite sliding process of the kinetic energy sleeve, the steam pumping position is changed in a similar telescopic action, which is based on reducing the negative impact of steam pressure on the bottom structure and mainly avoiding the problem of "high-pressure accumulation".

[0025] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should fall within the protection scope of the present invention.

[0026] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0027] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific embodiments. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A heavy oil injection and production thermal insulation telescopic device, applied at the end of the thermal insulation oil pipe, characterized in that: The invention comprises an outer sleeve (1), a kinetic energy sleeve (3), an inner sleeve (2) and a fixed sleeve (6), wherein the inner sleeve (2) is arranged between the inner wall of the outer sleeve (1) and the outer wall of the kinetic energy sleeve (3), a slip ring assembly (10) is arranged linearly and equidistantly along the length direction of the outer sleeve (1) on the outer wall of the kinetic energy sleeve (3), and an inner leakage groove (301) corresponding to the slip ring assembly (10) is provided on the kinetic energy sleeve (3); The slip ring assembly (10) is composed of an elastic ring (1002) and two slide cylinders (1001), the elastic ring (1002) is installed in the middle of the two slide cylinders (1001), the slide cylinder (1001) is sleeved on the outer wall of the kinetic energy sleeve (3), and a steam release cavity (1003) is provided on the inner wall of the slide cylinder (1001) away from the elastic ring (1002); The outer wall of the kinetic energy sleeve (3) and the inner wall of the outer sleeve (1) are provided with a block (12) corresponding to the inner leakage groove (301) and the steam release chamber (1003); the block (12) is provided with a passive pressing sheet (11) in a direction corresponding to the inner wall of the outer sleeve (1); and a limiting sleeve (13) corresponding to the block (12) is installed on the inner sleeve (2).

2. A heavy oil injection and production heat insulation expansion device according to claim 1, characterized in that: A fixed seat (4) is installed on the inner wall of one end of the outer sleeve (1); the fixed seat (4) is fixedly connected to the fixed sleeve (6); the fixed seat (4) is fixedly connected to the inner sleeve (2); a vortex fan group (5) is provided between the fixed sleeve (6) and the kinetic energy sleeve (3); the kinetic energy sleeve (3) is rotatably connected to the fixed sleeve (6) via the vortex fan group (5); and the kinetic energy sleeve (3) is rotatably connected to the inner sleeve (2) via the vortex fan group (5).

3. A heavy oil injection and production heat insulation telescopic device according to claim 2, characterized in that: The vortex fan group (5) is composed of a turbofan rod, a crankshaft rod (7) and two support rings, the two support rings being respectively mounted on the inner walls of a fixed sleeve (6) and a kinetic energy sleeve (3), the turbofan rod being rotatably connected to the support ring in the fixed sleeve (6), and the turbofan rod being fixedly connected to the support ring in the kinetic energy sleeve (3).

4. A heavy oil injection and production heat insulation telescopic device according to claim 3, characterized in that: The two ends of the crank link (7) are respectively mounted on the turbofan rod and the kinetic energy sleeve (3), and the crank link (7) is in a continuous right-angle bend shape. A sleeve ring is rotatably mounted at a horizontal position in the crank link (7), and a billiard ball group (8) is mounted under the sleeve ring.

5. The heavy oil injection and production heat insulation telescopic device according to claim 1, characterized in that: Springs (9) corresponding to the slip ring set (10) are installed at internal positions at both ends of the inner sleeve (2).

6. A heavy oil injection and production heat insulation telescopic device according to claim 1, characterized in that: The steam relief chambers (1003) in two adjacent positions form a steam relief ring, and the cross section of the steam relief ring is in a curved arch shape along a direction biased toward the outer sleeve (1).

7. A heavy oil injection and production heat insulation expansion device according to claim 6, characterized in that: The lower end of the limiting sleeve (13) matches the steam release ring, the slide cylinder (1001) is provided with a notch corresponding to the limiting sleeve (13), a guide rod is installed on the blocking block (12), the passive pressing plate (11) matches the inner wall of the outer sleeve (1), and the passive pressing plate (11) is connected to the blocking block (12) via the guide rod, and the two ends of the guide rod are respectively slidably connected to the outer sleeve (1) and the kinetic energy sleeve (3).

8. The heavy oil injection and production heat insulation expansion device according to claim 1, characterized in that: The steam release chamber (1003) is arranged in the middle of the inner steam release groove (301).

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