CN106837280B - Combined heating lifting device and heating lifting method thereof - Google Patents
Combined heating lifting device and heating lifting method thereof Download PDFInfo
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- CN106837280B CN106837280B CN201710211421.2A CN201710211421A CN106837280B CN 106837280 B CN106837280 B CN 106837280B CN 201710211421 A CN201710211421 A CN 201710211421A CN 106837280 B CN106837280 B CN 106837280B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 253
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 124
- 238000004519 manufacturing process Methods 0.000 claims abstract description 49
- 238000000605 extraction Methods 0.000 claims abstract description 47
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 19
- 239000010937 tungsten Substances 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- 238000004806 packaging method and process Methods 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 113
- 239000010779 crude oil Substances 0.000 claims description 18
- 238000005485 electric heating Methods 0.000 claims description 8
- 239000011491 glass wool Substances 0.000 claims description 4
- 239000012720 thermal barrier coating Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 9
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/005—Heater surrounding production tube
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
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- Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention provides a combined heating lifting device and a heating lifting method thereof, wherein the combined heating lifting device comprises: a plurality of electrothermal film heating mechanisms are arranged on the oil production pipe column at intervals, each electrothermal film heating mechanism is provided with an electrothermal tube, and the electrothermal tube is wound on a first tungsten wire; the oil extraction pump is connected to the lower end of the oil extraction pipe column; the electromagnetic wave heat energy generator is connected to the lower end of the oil extraction pump and consists of a plurality of heating sections, the heating sections comprise magnetic bars and resistance bars respectively connected to the two ends of the magnetic bars, copper wires are wound on the magnetic bars, and second tungsten wires are wound on the resistance bars; the packaging cable is provided with a heating section cable, an electrothermal film cable and a superconducting pulse cable, the packaging cable is arranged in an annular space formed by the oil production pipe column and the sleeve, the electrothermal film cable is connected with first tungsten wires of a plurality of electrothermal film heating mechanisms, the heating section cable is connected with second tungsten wires, and the superconducting pulse cable is connected with copper wires. The invention can realize the rapid heating and lifting of the thick oil and prevent the temperature from decreasing and the viscosity from rising in the heating and lifting process of the thick oil.
Description
Technical Field
The invention relates to a device and a method for heating and lifting crude oil, in particular to a combined heating and lifting device and a heating and lifting method thereof in the technical field of petroleum exploitation.
Background
At present, various large oil fields at home and abroad have the problem of difficult crude oil lifting, and the main crude oil lifting method comprises electric heating rods, water heating and thin oil blending, but the lifting effect of the method is not ideal, and the energy consumption is very large. Compared with common crude oil, the thick oil and the super thick oil have large viscosity, low solidifying point and quick temperature drop in the oil production pipe column. Therefore, the lifting of thick oil and super thick oil is more difficult, and becomes a technical problem which puzzles the petroleum industry for many years. In the prior art, a device and a method capable of effectively solving the problems of high energy consumption and low lifting speed are not available.
Disclosure of Invention
The invention aims to provide a combined heating lifting device which is high in heating lifting speed and can effectively prevent the temperature drop in the thick oil heating lifting process.
The invention further aims to provide a heating lifting method of the combined heating lifting device, which has high lifting speed and can effectively prevent the temperature from dropping in the heating lifting process of the thick oil.
The above object of the present invention can be achieved by the following technical solutions:
the invention provides a combined heating lifting device, which comprises:
the oil extraction pipe column is provided with a plurality of electrothermal film heating mechanisms at intervals, the electrothermal film heating mechanisms are provided with electrothermal tubes, and first tungsten wires are wound on the electrothermal tubes;
the oil extraction pump is connected to the lower end of the oil extraction pipe column;
the electromagnetic wave heat energy generator is connected to the lower end of the oil extraction pump and consists of a plurality of heating sections assembled in series, each heating section comprises a magnetic rod and resistance rods respectively connected to two ends of the magnetic rod, copper wires are wound on the magnetic rod, and second tungsten wires are wound on the resistance rods;
the packaging cable is provided with a heating section cable, an electrothermal film cable and a superconductive pulse cable, the packaging cable is arranged in an annular space formed by the oil production pipe column and the sleeve, the electrothermal film cable is connected with a plurality of first tungsten wires of the electrothermal film heating mechanism, the heating section cable is connected with the second tungsten wires, and the superconductive pulse cable is connected with the copper wires.
The combination heating and lifting device as described above wherein the exterior of the first tungsten filament and the exterior of the second tungsten filament are both coated with a thermal barrier coating.
The combined heating lifting device is characterized in that a plurality of centralizers are arranged on the oil production pipe column, and one centralizer is arranged between every two adjacent electrothermal film heating mechanisms.
The combined heating lifting device is characterized in that four electrothermal film heating mechanisms are arranged on the oil extraction pipe column, and a first electrothermal film heating mechanism, a second electrothermal film heating mechanism, a third electrothermal film heating mechanism and a fourth electrothermal film heating mechanism are sequentially arranged from the lower part of the oil extraction pipe column to the upper part of the oil extraction pipe column; the distance between the first electrothermal film heating mechanism and the oil extraction pump is 10-30 m; the distance between the second electrothermal film heating mechanism and the oil extraction pump is 100-200 m; the distance between the third electrothermal film heating mechanism and the oil extraction pump is 300-400 m; the distance between the fourth electrothermal film heating mechanism and the ground is 100-200 m.
The combined heating and lifting device is characterized in that insulating layers are arranged on the outer part of the heating section cable, the outer part of the electrothermal film cable and the outer part of the superconducting pulse cable.
The combined heating and lifting device is characterized in that the insulating layer is a high-temperature-resistant glass wool insulating layer.
The combined heating and lifting device is characterized in that the length of the heating section is 1m, the length of the magnetic rod is 50cm, the length of the resistance rod is 25cm, and the magnetic rod and the resistance rod are connected through threads.
The combined heating lifting device is characterized in that the length of the electrothermal film heating mechanism is 5-10 m, two ends of the first tungsten wire are respectively provided with a connector, and the first tungsten wire is connected with the electrothermal film cable through the connectors.
The invention also provides a heating lifting method of the combined heating lifting device, which adopts the combined heating lifting device, wherein the heating lifting method of the combined heating lifting device comprises the following steps:
step A: starting the electromagnetic wave heat energy generator to heat the underground thick oil;
and (B) step (B): and after the underground thick oil is changed into low-viscosity crude oil, starting the oil extraction pump and the electric heating film heating mechanisms, and pumping the low-viscosity crude oil from the oil extraction pipe column to the ground by the oil extraction pump.
The heating lifting method of the combined heating lifting device, wherein the heating temperature of the electromagnetic wave heat energy generator is 200-300 ℃.
The heating lifting method of the combined heating lifting device comprises the steps that four electrothermal film heating mechanisms are arranged on the oil production pipe column, and a first electrothermal film heating mechanism, a second electrothermal film heating mechanism, a third electrothermal film heating mechanism and a fourth electrothermal film heating mechanism are sequentially arranged from the lower side of the oil production pipe column to the upper side of the oil production pipe column; the heating temperature of the first electrothermal film heating mechanism is 160-180 ℃, the heating temperature of the second electrothermal film heating mechanism is 180-200 ℃, the heating temperature of the third electrothermal film heating mechanism is 200-220 ℃, the heating temperature of the fourth electrothermal film heating mechanism is 220 ℃, and the low-viscosity crude oil can be heated stepwise when passing through the first electrothermal film heating mechanism, the second electrothermal film heating mechanism, the third electrothermal film heating mechanism and the fourth electrothermal film heating mechanism.
The heating lifting method of the combined heating lifting device, wherein the distance between the first electrothermal film heating mechanism and the oil extraction pump is 10-30 m; the distance between the second electrothermal film heating mechanism and the oil extraction pump is 100-200 m; the distance between the third electrothermal film heating mechanism and the oil extraction pump is 300-400 m; the distance between the fourth electrothermal film heating mechanism and the ground is 100-200 m.
The invention has the characteristics and advantages that:
according to the combined heating lifting device, through the electromagnetic wave heat energy generator arranged at the bottom of the oil production pipe column, the underground thick oil can be quickly heated; in addition, through a plurality of electric heating film heating mechanisms which are arranged on the oil production pipe column at intervals, the electric heating film heating mechanisms are used for heating in a segmented mode, the temperature is raised in a stepped mode, the problems of temperature drop and viscosity rise of thick oil in the lifting process are effectively solved, and the oil production cost is reduced.
The heating lifting method of the combined heating lifting device can realize rapid heating lifting of thick oil, prevent temperature drop and viscosity rise of thick oil in the heating lifting process, and reduce oil extraction cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a combined heat and lift apparatus according to the present invention;
FIG. 2 is a schematic diagram of an electromagnetic wave heat energy generator of a combined heating and lifting device according to the present invention;
FIG. 3 is a schematic diagram of the electrothermal film heating mechanism of the combined heating and lifting device;
fig. 4 is a flow chart of a heating and lifting method of the combined heating and lifting device.
Reference numerals illustrate: 1. an electric control device; 2. a superconducting pulse device; 3. a heating section cable; 4. a centralizer; 41. a first centralizer; 42. a second centralizer; 43. a third centralizer; 5. a production pump; 51. a sucker rod; 6. an electrothermal film cable; 7. an electrothermal film heating mechanism; 71. a first electrothermal film heating mechanism; 710. an electric heating tube; 711. a joint; 712. a first tungsten wire; 72. a second electrothermal film heating mechanism; 73. a third electrothermal film heating mechanism; 74. a fourth electrothermal film heating mechanism; 8. a production string; 9. a superconducting pulse cable; 10. a sleeve; 11. an electromagnetic wave heat energy generator; 1100. a heating section; 110. a magnetic bar; 1101. copper wires; 1102. a terminal; 111. a resistor rod; 1111. a second tungsten wire; 1112. a terminal.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one
As shown in fig. 1 to 3, the present invention provides a combined heating and lifting device, comprising: the oil production pipe column 8 is provided with a plurality of electrothermal film heating mechanisms 7 at intervals, the electrothermal film heating mechanisms 7 are provided with electrothermal tubes 710, and first tungsten wires 712 are wound on the electrothermal tubes 710; a production pump 5 connected to the lower end of the production string 8; the electromagnetic wave heat energy generator 11 is connected to the lower end of the oil extraction pump 5, the electromagnetic wave heat energy generator 11 is composed of a plurality of heating sections 1100 assembled in series, the heating sections 1100 comprise magnetic bars 110 and resistance bars 111 respectively connected to two ends of the magnetic bars 110, copper wires 1101 are wound on the magnetic bars 110, and second tungsten wires 1111 are wound on the resistance bars 111; an encapsulation cable having a heating section cable 3, an electrothermal film cable 6 and a superconducting pulse cable 9, the encapsulation cable being disposed in an annular space formed by the production string 8 and the casing 10, the electrothermal film cable 6 being connected to a plurality of first tungsten wires 712 of the electrothermal film heating mechanism 7, the heating section cable 3 being connected to the second tungsten wires 1111, the superconducting pulse cable 9 being connected to the copper wires 1101. According to the combined heating lifting device, through the electromagnetic wave heat energy generator 11 arranged at the bottom of the oil production pipe column 8, the underground thick oil can be quickly heated; in addition, according to the combined heating lifting device, the plurality of electrothermal film heating mechanisms 7 are arranged on the oil production pipe column 8 at intervals, the plurality of electrothermal film heating mechanisms 7 heat in a segmented mode, the temperature is raised in a stepped mode, the problems of temperature drop and viscosity rise of thick oil in the lifting process are effectively solved, and the oil production cost is reduced.
Specifically, in the present embodiment, as shown in fig. 1 and 3, four sections of electrothermal film heating mechanisms 7 including a first electrothermal film heating mechanism 71, a second electrothermal film heating mechanism 72, a third electrothermal film heating mechanism 73, and a fourth electrothermal film heating mechanism 74 are connected to the production string 8 at intervals. The structure of each electrothermal film heating mechanism is the same, the first electrothermal film heating mechanism 71 is arranged at the position 10 m-30 m above the oil extraction pump 5, and the design temperature is 160-180 ℃; the second electrothermal film heating mechanism 72 is arranged at a position 100 m-200 m above the oil extraction pump 5, and the design temperature is 180-200 ℃; the third electrothermal film heating mechanism 73 is arranged at 300 m-400 m above the oil extraction pump 5, and the design temperature is 200-220 ℃; the fourth electrothermal film heating mechanism 74 is installed at a position 100 m-200 m from the ground, and the design temperature is 220 ℃. The structures of the electrothermal film heating mechanisms are the same, taking the first electrothermal film heating mechanism 71 as an example, which is provided with an electrothermal tube 710, a first tungsten wire 712 is wound on the outer side of the electrothermal tube 710, two ends of the first tungsten wire 712 are respectively provided with a joint 711, the joint 711 is connected with the electrothermal film cable 6, the electrothermal film heating mechanisms are connected in series through the electrothermal film cable 6, an insulating layer is arranged on the outer part of the electrothermal film cable 6, the insulating layer can be a high temperature resistant glass wool insulating layer or an insulating sleeve made of glass fiber materials, and the using temperature is 600 ℃ to 1000 ℃. The outside of the first tungsten wire 712 is coated with a heat-insulating coating, which may be a ceramic heat-insulating coating, to prevent heat from being dissipated outwards, so that heat can be transferred only to the inside of the electric heating tube 710. Each electrothermal film heating mechanism 7 is provided with an electrothermal tube 710, each electrothermal tube 710 is provided with a screw thread (not shown in the figure), and the electrothermal tube 710 is connected with the oil production pipe column 8 through the screw thread.
As shown in fig. 1 and 2, an electromagnetic wave heat energy generator 11 is connected to the lower part of the oil extraction pump 5, the electromagnetic wave heat energy generator 11 is of a segmented serial structure, each heating segment 1100 is one meter, and the heating segments 1100 are connected by threads (not shown). A 50cm magnetic bar 110 is arranged in the middle of the heating section 1100, copper wires 1101 are wound on the magnetic bar 110, a wiring terminal 1102 of the copper wires 1101 is connected with one end of a superconducting pulse cable 9, the other end of the superconducting pulse cable 9 is connected with a superconducting pulse device 2 on the ground, and the superconducting pulse device 2 provides superconducting pulse current for the superconducting pulse cable 9; two ends of the magnetic rod 110 are respectively connected with a resistance rod 111, a second tungsten filament 1111 is wound on the resistance rod 111, one end of the heating section cable 3 is connected with a wiring terminal 1112 of the second tungsten filament 1111, the other end of the heating section cable 3 is connected with a ground electric control device 1, and the electric control device 1 provides control current for the heating section cable 3. The exterior of the second tungsten wire is coated with a thermal barrier coating, which may be a ceramic thermal barrier coating. In this embodiment, the outer part of the heating section cable 3 and the outer part of the superconducting pulse cable 9 are provided with an insulating layer, for example, a high temperature resistant glass wool or an insulating sleeve made of a glass fiber material, which is used at a temperature in the range of 600 ℃ to 1000 ℃, to protect the cable from corrosion.
The oil production pipe column 8 is arranged in the sleeve 10 in a penetrating way, the lowest end of the oil production pipe column 8 is connected with the oil production pump 5, in the embodiment, the oil production pump 5 is provided with the oil production rod 51, namely, the oil production pump 5 is a rod type oil production pump, and the power is provided by the oil production rod 51. The oil extraction pump 5 is an oil extraction pump known in the art, and the specific structure thereof will not be described herein.
Further, a plurality of centralizers 4 are arranged between the plurality of electrothermal film heating mechanisms 7 and the casing 10, so as to achieve the purpose of supporting the oil production string 8 and prevent damage caused by contact friction between the oil production string 8 and the casing 10. Specifically, the first centralizer 41 is provided between the first electrothermal film heating mechanism 71 and the second electrothermal film heating mechanism 72; a second centralizer 42 is provided between the second electrothermal film heating mechanism 72 and the third electrothermal film heating mechanism 73; a third centralizer 43 is provided between the third electrothermal film heating mechanism 73 and the fourth electrothermal film heating mechanism 74. The three centralizers can effectively avoid collision and friction between the oil production pipe column 8, the four electrothermal film heating mechanisms 7 and the casing 10.
The working process of the combined heating lifting device is as follows: firstly, the combined heating and lifting device is put into the well, so that the electromagnetic wave heat energy generator 11 is positioned in the middle of an underground oil layer, the ground electric control device 1 and the superconducting pulse device 2 are started, the four electric heating film heating mechanisms 7 and the electromagnetic wave heat energy generator 11 start to work, the viscosity of underground viscous crude oil is reduced under the heating of the electromagnetic wave heat energy generator 11, the viscosity of the underground viscous crude oil is changed into low-viscosity crude oil, and the fluidity of the underground viscous crude oil is enhanced. Then, the oil production pump 5 starts to operate, lifts the crude oil with low viscosity upward, and is further stepped-heated by the plurality of electrothermal film heating mechanisms 7 on the oil production string 8 during lifting, thereby being lifted to the ground smoothly.
According to the combined heating lifting device, the electromagnetic wave heat energy generator 11 arranged at the bottom of the oil production pipe column 8 can realize rapid heating of thick oil; in addition, according to the combined heating lifting device, the plurality of electrothermal film heating mechanisms 7 are arranged on the oil production pipe column 8 at intervals, the plurality of electrothermal film heating mechanisms 7 heat in a segmented mode, the temperature is raised in a stepped mode, the problems of temperature drop and viscosity rise of thick oil in the lifting process are effectively solved, and the oil production cost is reduced.
Second embodiment
The invention also provides a heating lifting method of the combined heating lifting device, which utilizes the combined heating lifting device in the first embodiment, wherein the structure, the working principle and the beneficial effects of the combined heating lifting device are the same as those of the first embodiment, and the repeated description is omitted. The heating and lifting method of the combined heating and lifting device comprises the following steps:
as shown in fig. 4, step a: starting the electromagnetic wave heat energy generator 11 to heat underground thick oil;
specifically, the heating temperature of the electromagnetic wave heat energy generator 11 is 200-300 ℃, the viscosity of the thick oil of the underground oil layer is reduced under the high temperature effect, the thick oil becomes thin oil, and the fluidity is greatly improved.
And (B) step (B): after the underground thick oil is changed into low-viscosity crude oil, starting the oil extraction pump 5 and a plurality of electrothermal film heating mechanisms 7, wherein the oil extraction pump 5 pumps the low-viscosity crude oil from the oil extraction pipe column 8 to the ground;
specifically, four electrothermal film heating mechanisms 7 are arranged on the oil production pipe column 8, and a first electrothermal film heating mechanism 71, a second electrothermal film heating mechanism 72, a third electrothermal film heating mechanism 73 and a fourth electrothermal film heating mechanism 74 are sequentially arranged from the lower part of the oil production pipe column 8 to the upper part of the oil production pipe column 8; wherein the heating temperature of the first electrothermal film heating mechanism 71 is 160-180 ℃, and the distance between the first electrothermal film heating mechanism 71 and the oil extraction pump 5 is 10-30 m; the heating temperature of the second electrothermal film heating mechanism 72 is 180-200 ℃, and the distance between the second electrothermal film heating mechanism 72 and the oil extraction pump 5 is 100-200 m; the heating temperature of the third electrothermal film heating mechanism 73 is 200-220 ℃, and the distance between the third electrothermal film heating mechanism 73 and the oil extraction pump 5 is 300-400 m; the heating temperature of the fourth electrothermal film heating mechanism 74 is 220 ℃; the distance between the fourth electrothermal film heating mechanism 74 and the ground is 100 m-200 m; the crude oil having low viscosity can be heated stepwise while passing through the first electrothermal film heating mechanism 71, the second electrothermal film heating mechanism 72, the third electrothermal film heating mechanism 73, and the fourth electrothermal film heating mechanism 74.
The heating and lifting method can realize rapid heating and lifting of the thick oil, prevent the temperature and viscosity of the thick oil from being reduced in the heating and lifting process, and reduce the oil extraction cost.
The foregoing is illustrative of the present invention and is not to be construed as limiting the scope of the invention. Any equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this invention, and are intended to be within the scope of this invention.
Claims (12)
1. A combination heating and lifting device, characterized in that the combination heating and lifting device comprises:
the oil extraction pipe column is provided with a plurality of electrothermal film heating mechanisms at intervals, the electrothermal film heating mechanisms are provided with electrothermal tubes, and first tungsten wires are wound on the electrothermal tubes;
the oil extraction pump is connected to the lower end of the oil extraction pipe column;
the electromagnetic wave heat energy generator is connected to the lower end of the oil extraction pump and consists of a plurality of heating sections assembled in series, each heating section comprises a magnetic rod and resistance rods respectively connected to two ends of the magnetic rod, copper wires are wound on the magnetic rod, and second tungsten wires are wound on the resistance rods;
the packaging cable is provided with a heating section cable, an electrothermal film cable and a superconductive pulse cable, the packaging cable is arranged in an annular space formed by the oil production pipe column and the sleeve, the electrothermal film cable is connected with a plurality of first tungsten wires of the electrothermal film heating mechanism, the heating section cable is connected with the second tungsten wires, and the superconductive pulse cable is connected with the copper wires.
2. The combination heating and lifting device of claim 1 wherein an exterior of said first tungsten wire and an exterior of said second tungsten wire are each coated with a thermal barrier coating.
3. The combination heating and lifting device of claim 1, wherein a plurality of centralizers are arranged on the production string, and one centralizer is arranged between every two adjacent electrothermal film heating mechanisms.
4. The combined heating and lifting device according to claim 1, wherein four electrothermal film heating mechanisms are arranged on the oil production pipe column, and a first electrothermal film heating mechanism, a second electrothermal film heating mechanism, a third electrothermal film heating mechanism and a fourth electrothermal film heating mechanism are sequentially arranged from the lower side of the oil production pipe column to the upper side of the oil production pipe column; the distance between the first electrothermal film heating mechanism and the oil extraction pump is 10-30 m; the distance between the second electrothermal film heating mechanism and the oil extraction pump is 100-200 m; the distance between the third electrothermal film heating mechanism and the oil extraction pump is 300-400 m; the distance between the fourth electrothermal film heating mechanism and the ground is 100-200 m.
5. The combination heating and lifting device as recited in claim 1, wherein an insulating layer is provided on the exterior of the heating section cable, the exterior of the electrothermal film cable, and the exterior of the superconducting pulse cable.
6. The combination heating and lifting device as recited in claim 5, wherein said insulating layer is a high temperature resistant glass wool insulating layer.
7. The combination heating and lifting device as recited in claim 1, wherein the length of the heating section is 1m, the length of the magnetic rod is 50cm, the length of the resistance rod is 25cm, and the magnetic rod and the resistance rod are connected through threads.
8. The combined heating and lifting device according to claim 1, wherein the length of the electrothermal film heating mechanism is 5-10 m, two ends of the first tungsten wire are respectively provided with a joint, and the first tungsten wire is connected with the electrothermal film cable through the joints.
9. A heating and lifting method of a combined heating and lifting device, adopting the combined heating and lifting device as claimed in any one of claims 1 to 8, characterized in that the heating and lifting method of the combined heating and lifting device comprises the following steps:
step A: starting the electromagnetic wave heat energy generator to heat the underground thick oil;
and (B) step (B): and after the underground thick oil is changed into low-viscosity crude oil, starting the oil extraction pump and the electric heating film heating mechanisms, and pumping the low-viscosity crude oil from the oil extraction pipe column to the ground by the oil extraction pump.
10. The method for heating and lifting a combined heat and lifting device according to claim 9, wherein the heating temperature of the electromagnetic wave heat energy generator is 200-300 ℃.
11. The heating and lifting method of the combined heating and lifting device according to claim 9 or 10, wherein four electrothermal film heating mechanisms are arranged on the oil production string, and a first electrothermal film heating mechanism, a second electrothermal film heating mechanism, a third electrothermal film heating mechanism and a fourth electrothermal film heating mechanism are sequentially arranged from the lower side of the oil production string to the upper side of the oil production string; the heating temperature of the first electrothermal film heating mechanism is 160-180 ℃, the heating temperature of the second electrothermal film heating mechanism is 180-200 ℃, the heating temperature of the third electrothermal film heating mechanism is 200-220 ℃, the heating temperature of the fourth electrothermal film heating mechanism is 220 ℃, and the low-viscosity crude oil can be heated stepwise when passing through the first electrothermal film heating mechanism, the second electrothermal film heating mechanism, the third electrothermal film heating mechanism and the fourth electrothermal film heating mechanism.
12. The method for heating and lifting a combined heating and lifting device according to claim 11, wherein the distance between the first electrothermal film heating mechanism and the oil extraction pump is 10 m-30 m; the distance between the second electrothermal film heating mechanism and the oil extraction pump is 100-200 m; the distance between the third electrothermal film heating mechanism and the oil extraction pump is 300-400 m; the distance between the fourth electrothermal film heating mechanism and the ground is 100-200 m.
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| CN201710211421.2A CN106837280B (en) | 2017-03-31 | 2017-03-31 | Combined heating lifting device and heating lifting method thereof |
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| CN201710211421.2A CN106837280B (en) | 2017-03-31 | 2017-03-31 | Combined heating lifting device and heating lifting method thereof |
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| CN106837280B true CN106837280B (en) | 2023-09-05 |
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|---|---|---|---|---|
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