CN217841622U

CN217841622U - Thickened oil positive temperature heating lifting device

Info

Publication number: CN217841622U
Application number: CN202221967808.3U
Authority: CN
Inventors: 孔为国
Original assignee: Beijing Shenzhou Jieli'an Energy Technology Co ltd
Current assignee: Beijing Shenzhou Jieli'an Energy Technology Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-11-18
Anticipated expiration: 2032-07-28

Abstract

The utility model discloses a viscous crude positive temperature heating lifting devices, viscous crude positive temperature heating lifting devices includes: the oil pumping assembly comprises an oil pumping pipe, one end of the oil pumping pipe is provided with an oil well pump, and the other end of the oil pumping pipe is provided with an oil outlet; the heating device comprises a heating loop, wherein a heater, a heating pipe and a heat exchange medium storage tank are arranged in the heating loop, the heater, the heating pipe and the heat exchange medium storage tank are connected in series in the heating loop, and a heat exchange medium circulating in the heating pipe is used for heating the thickened oil in the oil pumping pipe. The utility model discloses viscous crude positive temperature heating lifting devices has the heating circuit of heater, heating pipe and heat transfer medium storage jar through the setting, utilizes the heat transfer medium of heater in to the heating circuit to carry out the heat transfer through the heat transfer medium in the heating pipe and the viscous crude of taking out in the oil pipe and realize the heating to the viscous crude, do benefit to and promote the heating effect, increase oil recovery efficiency.

Description

Thickened oil positive temperature heating lifting device

Technical Field

The utility model belongs to the technical field of the oil development technique and specifically relates to a viscous crude positive temperature heating lifting devices is related to.

Background

With the development of the petroleum industry and the improvement of the technical level of the petroleum exploitation process, the reserve of the available crude oil is continuously increased, and the large-scale capacity is established by some heavy oil reservoirs which are considered to have no exploitation value originally through methods such as thermal oil recovery or improvement of the flow condition of a shaft. In recent decades, china effectively develops a batch of heavy oil fields by adopting a steam injection thermal oil recovery technology, and basically forms a set of matching technology for thermal recovery. On one hand, the viscosity of crude oil is high, and the seepage resistance of the crude oil in an oil layer is large, so that the crude oil cannot flow into a shaft from the oil reservoir; on the other hand, even if crude oil can flow into the bottom of the well under the oil reservoir conditions, the viscosity of the crude oil is increased due to degassing, heat dissipation and temperature reduction of the crude oil in the shaft and the like in the process of flowing from the bottom of the well to the top of the well, and the flowing of fluid in the shaft and the normal operation of oil well production equipment are seriously influenced.

In the related technology, the common heating modes of the electric heating oil extraction process include heating by a heater under a pump, heating by an electric heating rod or a heat tracing cable pump and the like, the heating mode has the disadvantages of high power consumption, high oil extraction cost, easy cable breakage, large suspension point load of an oil pumping unit of an oil well adopting the electric heating rod and limited pump descending depth.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a viscous crude positive temperature heating lifting devices utilizes the heat transfer medium of heater in to the heating circuit to carry out the heat transfer through heat transfer medium and viscous crude and realize the heating to the viscous crude, do benefit to the promotion and heat the effect.

According to the utility model discloses viscous crude positive temperature heating lifting devices, include: the oil pumping assembly comprises an oil pumping pipe, one end of the oil pumping pipe is provided with an oil well pump, and the other end of the oil pumping pipe is provided with an oil outlet; the heating device comprises a heating loop, wherein a heater, a heating pipe and a heat exchange medium storage tank are arranged in the heating loop, the heater, the heating pipe and the heat exchange medium storage tank are connected in series in the heating loop, and a heat exchange medium circulating in the heating pipe is used for heating the thickened oil in the oil pumping pipe.

According to the utility model discloses viscous crude positive temperature heating lifting devices has the heating circuit of heater, heating pipe and heat transfer medium storage jar through the setting, utilizes the heat transfer medium of heater in to the heating circuit to heat the viscous crude through the heat transfer medium in the heating pipe and the viscous crude of taking out in the oil pipe carries out the heat transfer and realizes the heating to the viscous crude, does benefit to the promotion and heats the effect, increases oil recovery efficiency.

According to the utility model discloses viscous crude positive temperature heating lifting devices of some embodiments, the heater includes inlayer pipeline and outer casing, the inlayer pipeline has the medium runner, the medium runner establish ties in the heating circuit, outer casing cover is located outside the inlayer pipeline, outer casing is made for electrical heating material.

According to some embodiments of the utility model discloses viscous crude positive temperature heating lifting devices, the heating pipe is located in the oil pumping pipe.

According to the utility model discloses viscous crude positive temperature heating lifting devices of some embodiments, it includes along the section of lifting of vertical extension and the section of producing oil of following horizontal extension to take out oil pipe, the lower extreme that lifts the section is equipped with the oil-well pump, lift the upper end of section with the one end of the section of producing oil links to each other, the section of producing oil deviates from the one end that lifts the section is equipped with the oil-out, the heating pipe is located lift the section.

According to the utility model discloses viscous crude positive temperature heating lifting devices of some embodiments, the heating pipe is including getting into the section and discharging the section, get into the section with discharging the section establish ties in proper order in the heating circuit, just get into the section with discharging the parallel spaced apart distribution of section in the section of lifting.

According to the utility model discloses viscous crude positive temperature heating lifting devices of some embodiments, the heating pipe still includes the linkage segment, the linkage segment connect in get into the section with between the discharge section, just the linkage segment is located it is close to lift the section the one end of oil-well pump.

According to the thickened oil positive temperature heating lifting device of some embodiments of the utility model, the heating pipe encircles outside the oil pumping pipe.

According to the utility model discloses viscous crude positive temperature heating lifting devices of some embodiments, heat transfer medium storage jar is equipped with connects the import and connects the export, connect the import with the exit end intercommunication of heater, connect the export with the entry end intercommunication of heating pipe, connect the import and be higher than connect the export.

According to the utility model discloses viscous crude positive temperature heating lifting devices of some embodiments, still be equipped with the circulating pump in the heating circuit, the circulating pump is located heat transfer medium storage jar with between the heating pipe.

According to the utility model discloses viscous crude positive temperature heating lifting devices of some embodiments, the entry end and/or the exit end of circulating pump are equipped with the control valve.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a thickened oil positive temperature heating lifting device according to an embodiment of the present invention.

Reference numerals are as follows:

the thickened oil is heated by positive temperature to lift the device 100,

the oil pumping assembly 1, an oil pipe 11, a sleeve 12, a sealer 13, an oil pumping pipe 14, a lifting section 141, an oil outlet section 142, an oil outlet 143, an oil well pump 15,

heating circuit 2, heater 21, inner pipe 211, outer shell 212, heating pipe 22, inlet section 221, discharge section 222, connecting section 223, heat exchange medium storage tank 23, connecting inlet 231, connecting outlet 232, circulating pump 24, control valve 25, switch 26,

a subterranean well 3.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

A thickened oil positive temperature heating lifting device 100 according to an embodiment of the present invention is described below with reference to fig. 1, including: the oil pumping assembly 1 and the heating loop 2, the heat exchange medium circulating in the heating loop 2 can heat the thick oil pumped out by the oil pumping assembly 1, and the heating effect is favorably improved.

As shown in fig. 1, the oil pumping assembly 1 includes an oil pumping pipe 14, an oil pump 15 is disposed at one end of the oil pumping pipe 14, and an oil outlet 143 is disposed at the other end of the oil pumping pipe 14. The oil pump 15 is disposed at the lower end of the oil pumping pipe 14 to pump oil through the oil pump 15, and the pumped thick oil is delivered upwards through the oil pumping pipe 14, and the oil outlet 143 is disposed at the upper end of the oil pumping pipe 14, so that the thick oil in the oil pumping pipe 14 can be discharged from the oil outlet 143.

Specifically, the oil pumping assembly 1 further includes an oil pipe 11, a casing 12 and a sealer 13 located inside the casing 12, as shown in fig. 1, the oil pipe 11 is installed inside the casing 12, the sealer 13 is arranged between an outer peripheral wall of a lower end of the oil pipe 11 and an inner peripheral wall of a lower end of the casing 12, the oil pumping pipe 14 is located inside the oil pipe 11, and the oil well pump 15 is located at a lower end inside the oil pipe 11. Wherein, the lower extreme of sleeve pipe 12 extends in secret oil well 3, and the lower extreme of oil pipe 11 also is located secret oil well 3, and the sleeve can prevent that the object in secret oil well 3 from blockking up, gathering in the lower extreme of oil pipe 11 to make oil-well pump 15 can pump the viscous crude that is located secret oil well 3, and carry to outside secret oil well 3 through oil pumping pipe 14, realize oil recovery.

The heating loop 2 is provided with a heater 21, a heating pipe 22 and a heat exchange medium storage tank 23, the heater 21, the heating pipe 22 and the heat exchange medium storage tank 23 are connected in series in the heating loop 2, and the heat exchange medium circulating in the heating pipe 22 is used for heating the thick oil in the oil pumping pipe 14. The heat exchange medium storage tank 23 stores a large amount of heat exchange medium, and the heat exchange medium can circulate in the heating circuit 2, that is, the heat exchange medium can enter the heating pipe 22 and the heater 21. When the heat exchange medium enters the heater 21, the heater 21 can heat the heating medium to raise the temperature of the heating medium to a higher temperature, and when the heating medium enters the heating pipe 22, the heating medium can exchange heat with the thick oil in the oil pumping pipe 14 to heat the thick oil. The heat exchange medium can be water, and the use cost is low.

From this, through heat transfer medium in heating circuit 2 continuous circulation flow, make heat transfer medium can continuously enter into heater 21 and heat, and circulate after the heating and heat the viscous crude in heating pipe 22, and along with new viscous crude constantly takes out the liter, the heat transfer medium that circulates in heating pipe 22 can continuously heat the viscous crude again, can realize continuously heating the viscous crude that constantly takes out the liter, heating efficiency is higher, and can guarantee that the viscous crude in oil extraction pipe 14 is in higher temperature state all the time, reduce the viscous crude, do benefit to and draw in the viscous crude to oil-out port 143 fast, promote oil recovery efficiency.

The heater 21 circularly heats the heat exchange medium, so that the temperature of the heat exchange medium in the heat exchange medium storage tank 23 can reach 5 ℃, and the flow rate of the heat exchange medium in the heating loop 2 can be controlled, so that the temperature in the heating pipe 22 and the internal temperature in the oil pumping pipe 14 are within the range of 50-65 ℃, thereby being beneficial to reducing the viscosity of the thick oil and improving the flowability of the thick oil.

According to the utility model discloses viscous crude positive temperature heating lifting devices 100 has heating circuit 2 of heater 21, heating pipe 22 and heat transfer medium storage jar 23 through the setting, utilizes heater 21 to heat the heat transfer medium in heating circuit 2 to carry out the heat transfer through the heat transfer medium in the heating pipe 22 and the viscous crude of taking out in oil pipe 14 and realize the heating to the viscous crude, do benefit to and promote the heating effect, increase oil recovery efficiency.

In some embodiments, heater 21 includes an inner tube 211 and an outer housing 212.

The inner layer pipeline 211 is of a hollow structure, the inner layer pipeline 211 is provided with a medium flow channel, the medium flow channel extends and is communicated along the axial direction of the inner layer pipeline 211, namely the medium flow channel is opened at two ends of the inner layer pipeline 211, the medium flow channel is connected in series in the heating loop 2, and two opened ends of the medium flow channel are communicated with the heating loop 2, so that a heat exchange medium can enter the medium flow channel from one end of the medium flow channel and flow out from the other end of the medium flow channel in the circulating process of the heating loop 2.

As shown in fig. 1, the outer shell 212 is sleeved outside the inner pipe 211, and the outer shell 212 is made of an electric heating material. As shown in fig. 1, the length of the outer shell 212 is the same as that of the inner pipe 211, so that the outer shell 212 can heat each position in the inner pipe 211 along the length direction, the heating stroke of the heat exchange medium in the heater 21 is increased, and the heating effect is improved.

The outer shell 212 can be made of alloy material steel and aluminum to be processed into an O-shaped fixed heating body, so that the inner pipeline 211 is arranged in the outer shell 212 in a penetrating mode, the design that liquid is separated from a heating electric appliance is achieved, the heating process is ensured to be carried out safely, the heating mode is direct heat exchange, the heat loss is small, and the heating performance is good.

And the strength and the heat conduction material of the outer shell 212 are made of steel-aluminum composite materials, the steel increases the strength of the outer shell 212 as a support body, higher water pressure can be borne, the aluminum alloy increases the heat conduction, the power consumption is prevented from being increased, the purposes of low carbon, cleanness, environmental protection and energy conservation are achieved, a user can use the shell, and the power consumption is reduced.

Specifically, the outer shell 212 is used as an electrical heating structure, and when the outer shell 212 is heated, electrical energy can be converted into heat energy of a heat exchange medium and the thick oil, so that the temperature of the thick oil production fluid in the oil pumping pipe 14 is raised, the viscosity of the thick oil production fluid is reduced, and the fluidity of the thick oil production fluid is improved. As shown in fig. 1, three sets of switches are connected to the outside of the outer shell 212, and the current conduction of the outer shell 212 is realized through any one of the three sets of switches, so as to heat with different powers respectively, and the heating powers corresponding to the three sets of switches are sequentially increased, so as to flexibly adjust the heating temperature.

In some embodiments, the heating pipe 22 is located in the oil pumping pipe 14, that is, the heating pipe 22 may be installed in the oil pumping pipe 14, that is, the heating pipe 22 does not occupy a space outside the oil pumping pipe 14, so as to realize an integrated arrangement of the heating pipe 22 and the oil pumping pipe 14, which is beneficial to increasing the integration level of the heavy oil positive temperature heating lifting device 100.

The heating pipe 22 is integrated in the oil pumping pipe 14, so that heat of a heat exchange medium in the heating pipe 22 can be maximally diffused into the oil pumping pipe 14, thick oil can be effectively heated, and heating efficiency is improved.

In some embodiments, the oil pumping pipe 14 comprises a lifting section 141 extending vertically and an oil discharging section 142 extending horizontally, i.e. the lifting section 141 and the oil discharging section 142 are connected in a bent manner, so that the oil pumping pipe 14 can pump the thick oil out of the underground oil well 3 and discharge the thick oil toward a specific device or space.

Specifically, as shown in fig. 1, the oil pump 15 is disposed at the lower end of the lifting segment 141, the upper end of the lifting segment 141 is connected to one end of the oil outlet segment 142, an oil outlet 143 is disposed at one end of the oil outlet segment 142 away from the lifting segment 141, and the heating pipe 22 is disposed in the lifting segment 141. That is, in actual operation, the oil pump 15 pumps oil at the lower end of the lifting section 141, so that the pumped oil flows upward from the lower end of the lifting section 141, and flows to the oil outlet section 142, and then flows horizontally to be discharged from the oil outlet 143, thereby realizing an oil recovery process.

In this process, can understand that the viscous crude is for following the bottom that lifts section 141 and flow up, and accomplish lifting in lifting section 141, and flow resistance in lifting section 141 is great promptly, and especially the stroke that lifts section 141 is great when actually pumping, the utility model discloses in locating lifting section 141 with heating pipe 22, do benefit to in lifting section 141 and realize the heating to the viscous crude, reduce the viscosity of the viscous crude that lifts in section 141, do benefit to and realize that the viscous crude lifts fast in lifting section 141, increase oil recovery efficiency.

In some embodiments, the heating pipe 22 includes an inlet section 221 and an outlet section 222, the inlet section 221 and the outlet section 222 are sequentially connected in series in the heating circuit 2, and the inlet section 221 and the outlet section 222 are distributed in the lifting section 141 in parallel and spaced apart, so that the heat exchange medium can flow in from the inlet section 221, enter the outlet section 222 in the gradual flow process, and flow out from the outlet section 222 to the oil extraction pipe 14.

That is, the stroke of the heat exchange medium flowing in the heating pipe 22 is equal to twice the length of the lifting section 141 of the oil pumping pipe 14, so that the heat exchange medium in the heating pipe 22 and the thick oil in the lifting section 141 exchange heat effectively, and the thick oil is heated. As shown in fig. 1, the left side of the heating pipe 22 is an inlet section 221, the inlet section 221 extends downward along the left sidewall of the oil pumping pipe 14, and the right side of the heating pipe 22 is an outlet section 222, the outlet section 222 extends upward along the right sidewall of the oil pumping pipe 14, so that the heat exchange medium flows downward along the heating pipe 22 and then flows upward from the lower end after entering the oil pumping pipe 14, thereby jointly heating the left and right sides in the oil pumping pipe 14 and improving the heating efficiency.

Further, the heating pipe 22 further includes a connecting section 223, the connecting section 223 is connected between the inlet section 221 and the outlet section 222, and the connecting section 223 is located at one end of the lifting section 141 close to the oil well pump 15, so that the thick oil at the oil well pump 15 can be heated by the heat exchange medium flowing at the connecting section 223, and the rotation resistance of the oil well pump 15 is reduced.

As shown in fig. 1, the connection section 223 is vertically disposed at the lower end of the oil pumping pipe 14 relative to the inlet section 221 and the outlet section 222, so that each part of the heating pipe 22 is respectively distributed in parallel and spaced apart from each inner wall of the oil pumping pipe 14, so that the heat of the heat exchange medium in the heating pipe 22 can be diffused in all directions in the oil pumping pipe 14, and the heating effect is increased.

In some embodiments, the heating pipe 22 is wound around the oil extraction pipe 14 (not shown), that is, the heating pipe 22 can be wound around the oil extraction pipe 14, so that each position in the circumferential direction of the oil extraction pipe 14 can be effectively heated, and the heating efficiency can be improved.

In some embodiments, the heat exchange medium storage tank 23 is provided with a connection inlet 231 and a connection outlet 232, the connection inlet 231 is communicated with the outlet end of the heater 21, and the connection outlet 232 is communicated with the inlet end of the heating pipe 22, so that the heat exchange medium can flow out from the connection outlet 232, enter the heating loop 2 for circulation flow, and flow back into the heat exchange medium storage tank 23 from the connection inlet 231, thereby realizing continuous circulation flow of the heat exchange medium.

The connecting inlet 231 is higher than the connecting outlet 232, so that the heat exchange medium entering the heat exchange medium storage tank 23 from the connecting inlet 231 can flow to the connecting outlet 232 under the action of gravity and automatically flow out from the connecting outlet 232, the action of gravity is reasonably utilized, and the work-doing energy consumption is reduced.

In some embodiments, a circulation pump 24 is further disposed in the heating circuit 2, the circulation pump 24 is located between the heat exchange medium storage tank 23 and the heating pipe 22, and the circulation pump 24 can drive the heat exchange medium to circulate in the heating circuit 2, so that the thick oil is continuously heated in the heating circuit 2 by the heat exchange medium.

Wherein, the slew velocity of accessible control circulating pump 24 to adjust the flow velocity of heat transfer medium in heating circuit 2, and then adjust the heat transfer medium to the heat exchange efficiency of viscous crude, avoid the consumption too big when guaranteeing the heating effect.

In some embodiments, the inlet end and/or the outlet end of the circulation pump 24 is/are provided with a control valve 25, and the control valve 25 can be used for controlling the on-off state of the heat exchange medium in the heating loop 2 and also can be used for controlling the flow rate of the heat exchange medium, so as to accurately adjust the heating efficiency of the thick oil.

As shown in fig. 1, control valves 25 are provided at both the inlet and outlet ends of the circulation pump 24.

1. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

2. In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

3. In the description of the present invention, "a plurality" means two or more.

4. In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact via another feature therebetween.

5. In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A thickened oil positive temperature heating lifting device (100) is characterized by comprising:

the oil pumping assembly (1) comprises an oil pumping pipe (14), one end of the oil pumping pipe (14) is provided with an oil well pump (15), and the other end of the oil pumping pipe (14) is provided with an oil outlet (143);

heating circuit (2), be equipped with heater (21), heating pipe (22) and heat transfer medium storage jar (23) in heating circuit (2), heater (21), heating pipe (22) with heat transfer medium storage jar (23) are established ties in heating circuit (2), the heat transfer medium of circulation in heating pipe (22) is used for to the viscous crude in oil extraction pipe (14) heats.

2. The thickened oil positive temperature heating lifting device (100) as defined in claim 1, wherein the heater (21) comprises an inner pipe (211) and an outer shell (212), the inner pipe (211) has a medium flow passage, the medium flow passage is connected in series in the heating circuit (2), the outer shell (212) is sleeved outside the inner pipe (211), and the outer shell (212) is made of an electric heating material.

3. Positive temperature heated thick oil lifting device (100) according to claim 1, characterized in that the heating pipe (22) is located inside the oil extraction pipe (14).

4. The thickened oil positive temperature heating lifting device (100) as defined in claim 3, wherein the oil pumping pipe (14) comprises a lifting section (141) extending vertically and an oil outlet section (142) extending horizontally, the oil well pump (15) is arranged at the lower end of the lifting section (141), the upper end of the lifting section (141) is connected with one end of the oil outlet section (142), the oil outlet section (143) is arranged at the end of the oil outlet section (142) departing from the lifting section (141), and the heating pipe (22) is located in the lifting section (141).

5. Positive temperature heated thick oil lifting device (100) according to claim 4, wherein the heating pipe (22) comprises an inlet section (221) and an outlet section (222), the inlet section (221) and the outlet section (222) are connected in series in the heating circuit (2) in sequence, and the inlet section (221) and the outlet section (222) are distributed in the lifting section (141) in parallel and at intervals.

6. Positive temperature heated lift device (100) for thick oil according to claim 5, characterized in that the heating pipe (22) further comprises a connecting segment (223), the connecting segment (223) is connected between the inlet segment (221) and the outlet segment (222), and the connecting segment (223) is located at one end of the lifting segment (141) close to the pump (15).

7. PTC heating lift device (100) according to claim 1, characterized in that the heating pipe (22) is surrounding the oil extraction pipe (14).

8. Positive temperature heated thick oil lifting device (100) according to claim 1, wherein the heat transfer medium storage tank (23) is provided with a connection inlet (231) and a connection outlet (232), the connection inlet (231) is communicated with the outlet end of the heater (21), the connection outlet (232) is communicated with the inlet end of the heating pipe (22), and the connection inlet (231) is higher than the connection outlet (232).

9. Positive temperature heating and lifting device (100) for heavy oil according to claim 1, wherein a circulation pump (24) is further provided in the heating loop (2), and the circulation pump (24) is located between the heat exchange medium storage tank (23) and the heating pipe (22).

10. Positive temperature heating and lifting device (100) of thick oil according to claim 9, characterized in that the inlet and/or outlet end of the circulation pump (24) is provided with a control valve (25).