Underground heating device for shale oil in-situ modification

Abstract

According to the underground heating device for shale oil in-situ modification, under the action of deformation recovery of a torsional spring, a mounting plate rotates from the interior of a rotating groove to the exterior of the rotating groove, so that the position of an auxiliary electric heating plate is changed, an originally relatively concentrated heating area is expanded, the auxiliary electric heating plate can cover a wider underground area, and the heating efficiency is improved. Therefore, the heating range is remarkably widened, the shale oil layer can be heated more comprehensively and more uniformly by expanding the heating range, and the modification effect and the exploitation efficiency of shale oil are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shale oil modification, and in particular to an underground heating device for in-situ modification of shale oil. Background Art

[0002] Shale oil is an unconventional petroleum resource found in shale formations. While its reserves are plentiful, its extraction is challenging due to its extremely low reservoir permeability and high crude oil viscosity. In-situ reforming, an emerging shale oil extraction method, heats the underground shale oil reservoir, causing chemical reactions such as cracking and reorganization of the crude oil underground, reducing viscosity and increasing fluidity, thereby enabling efficient extraction. However, this technology currently faces numerous challenges in its practical application.

[0003] Current heating devices typically only heat at specific locations, limiting the heating area and preventing adjustments based on actual needs. This in turn impacts the progress and efficiency of the entire reforming project. This single heating location design limits its applicability in complex working conditions, particularly during in-situ reforming of shale oil, where expanding the heating area is crucial for improving reforming efficiency and effectiveness. Summary of the Invention

[0004] The purpose of the present invention is to provide an underground heating device for in-situ reforming of shale oil to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: The cam is secured to the bottom of the heating unit and has a central portion for activating the heating unit's rotation with respect to the inner sleeve, and a central portion for activating the heating unit's rotation with respect to the inner sleeve.

[0006] Furthermore, the electric adsorption device includes a second electromagnet fixed in the rotating groove, and a first electromagnet that is adsorbed on or separated from the second electromagnet is provided on the end surface of the mounting plate.

[0007] Furthermore, a main heating plate is provided at the bottom center of the heating seat.

[0008] Furthermore, an extension pipe is connected to the top of the heating seat.

[0009] Furthermore, the heating seat is provided with an electrical socket, and the extension tube is provided with a connecting wire connected to the electrical socket. Heat is supplied to the auxiliary electric heating plate through the connecting wire via the electrical socket, the second electrical contact piece, and the first electrical contact piece.

[0010] Furthermore, a frame ring is slidably mounted on the outer side of the extension pipe, four clamping sleeves are fixedly mounted on the outer side of the frame ring, a clamping block is fixedly mounted inside the four clamping sleeves, and a frame plate is fixedly mounted on one end of the clamping block.

[0011] Beneficial effects of the present invention: The present invention is an underground heating device for in-situ reforming of shale oil. The heating base is placed inside the hole opened for shale oil extraction, and the heating base is made to penetrate deep into the ground. After reaching the ground, the main heating plate and the auxiliary heating plate can be powered, so that the main heating plate and the auxiliary heating plate generate heat, which can generate a large amount of heat in a short time and efficiently transfer the heat to the surrounding underground environment, thereby realizing in-situ reforming and heating of the underground shale oil, thereby greatly improving the extraction efficiency of shale oil, reducing extraction costs, and also reducing the impact on the environment; In addition, when the heating seat reaches the underground space, the torsion spring recovers its deformation, so that the rotating sleeve can rotate inside the rotating groove, thereby flipping the mounting plate to the outside of the flip groove, thereby changing the position of the auxiliary electric heating plate, that is, the downward heating method is changed to the upward heating method, so that the originally relatively concentrated heating area is expanded, and the auxiliary electric heating plate can cover a wider underground area, thereby significantly improving the heating range. By expanding the heating range, the shale oil layer can be heated more comprehensively and evenly, further improving the shale oil modification effect and mining efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and examples.

[0013] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the present invention.

[0014] Figure 2 It is a bottom-up three-dimensional structural schematic diagram of the present invention.

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the heating seat of the present invention.

[0016] Figure 4 This is a bottom view of the heating base structure of the present invention.

[0017] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle.

[0018] Figure 6 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0019] Figure 7 It is a schematic diagram of the three-dimensional structure of the extended connecting pipe of the present invention.

[0020] Figure 8 It is a partial bottom view structural diagram of the present invention. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0022] See also Figures 1-8 The present invention provides a technical solution: an underground heating device for in-situ reforming of shale oil, comprising a heating seat 2, a plurality of rotating grooves 25 are provided at the bottom of the heating seat 2, an inner sleeve rod 24 is fixedly installed inside each rotating groove 25, a rotating ring 21 is fixed at the middle position of the inner sleeve rod 24, a second electric contact piece 22 is fixedly installed on the circumferential outer side of the rotating ring 21, a torsion spring 23 is sleeved on the outer side of the inner sleeve rod 24, a rotating sleeve 9 is provided at one end of the mounting plate 14, a circular groove 18 is provided inside the rotating sleeve 9, an annular groove 16 is provided inside the circular groove 18, and the annular groove 16 is used for To accommodate the rotating ring 21, limit the left and right lateral movement of the mounting plate 14 relative to the inner sleeve rod 24, the first electric contact 17 is fixedly installed inside the annular groove 16, the auxiliary electric heating plate 13 is fixedly installed inside the mounting plate 14, and the second electromagnet 20 is fixedly installed on the bottom of the heating seat 2. The rotating sleeve 9 is mounted on the outside of the inner sleeve rod 24 through the circular groove 18. The torsion spring 23 is arranged between the inner sleeve rod 24 and the rotating sleeve 9. The rotating ring 21 is rotatably mounted on the inner side of the annular groove 16. The second electric contact 22 is always in contact with the first electric contact 17 for supplying heat to the auxiliary electric heating plate 13.

[0023] The working principle of the above technical solution is as follows: when in use, the heating seat 2 can be placed inside the hole opened for shale oil mining, and the heating seat 2 can be made to penetrate deep into the ground. After reaching the ground, the main electric heating plate 10 and the auxiliary electric heating plate 13 can be powered, so that the main electric heating plate 10 and the auxiliary electric heating plate 13 generate heat, which can generate a large amount of heat in a short time and efficiently transfer the heat to the surrounding underground environment, thereby realizing in-situ reforming and heating of the underground shale oil, thereby greatly improving the mining efficiency of shale oil, reducing mining costs, and reducing the impact on the environment. In addition, when the heating seat 2 reaches the underground space, the torsion spring 23 restores the deformation. Under the present invention, the rotating sleeve 9 can be rotated from the inside of the rotating groove 25 to the outside of the rotating groove 25, and the auxiliary electric heating plate 13 is changed from heating upward to heating downward, thereby changing the position of the auxiliary electric heating plate 13, so that the originally relatively concentrated heating area is expanded, and the auxiliary electric heating plate 13 can cover a wider underground area, thereby significantly improving the heating range. By expanding the heating range, the shale oil layer can be heated more comprehensively and evenly, further improving the reforming effect and mining efficiency of the shale oil. By setting the second electric contact 22 and the first electric contact 17, it can be ensured that the device supplies power to the auxiliary electric heating plate 13 when the rotating sleeve 9 rotates, thereby ensuring the heating effect.

[0024] In another embodiment, Figures 1-8 As shown, a first electromagnet 15 is fixedly mounted inside each of the multiple mounting plates 14 at one end away from the rotating sleeve 9 , and the magnetic poles of the first electromagnet 15 and the second electromagnet 20 facing each other are opposite.

[0025] Before use, the mounting plate 14 can be pressed into the inside of the storage groove 26, so that the first electromagnet 15 and the second electromagnet 20 are adsorbed together, thereby fixing the mounting plate 14 on the inner side of the rotating groove 25. On the one hand, it is convenient for storage, and on the other hand, it is convenient to place the heating seat 2 into the pre-set hole. After the heating seat 2 enters the underground space, the power supply to the second electromagnet 20 can be stopped, so that the second electromagnet 20 loses its magnetism, and the second electromagnet 20 stops applying adsorption force to the first electromagnet 15. Under the action of the torsion spring 23 restoring the deformation, the rotating sleeve 9 can be rotated inside the rotating groove 25, so that the mounting plate 14 is flipped to the outside of the rotating groove 25, thereby changing the position of the auxiliary electric heating plate 13.

[0026] In another embodiment, Figures 1-8As shown, an electrical socket 11 is fixedly installed on the top of the heating seat 2, a connecting socket is plugged into the inside of the electrical socket 11, and a connecting wire 8 is fixedly connected to the top of the socket, a first threaded connector 3 is fixedly installed on the top of the heating seat 2, the internal thread of the first threaded connector 3 is connected to the extension pipe 1, a second threaded connector 7 is fixedly installed on the top of the extension pipe 1, the second threaded connector 7 has the same specifications as the first threaded connector 3, the connecting wire 8 is located on the inner side of the extension pipe 1, a frame ring 4 is slidably installed on the outer side of the extension pipe 1, four clamping sleeves 5 are fixedly installed on the outer side of the frame ring 4, a clamping block 19 is fixedly installed inside the four clamping sleeves 5, and a frame plate 6 is fixedly installed on one end of the clamping block 19.

[0027] It can be connected to external power supply equipment through the power socket 11, the connecting socket and the connecting wire 8. In addition, it can be connected to the extension pipe 1 through the provided first threaded connector 3, and the extension pipes 1 can also be connected to each other through the second threaded connector 7, so that it is suitable for placing the heating seat 2 at different depths underground. In addition, the provided frame ring 4 and frame plate 6 can be used to set the device at the entrance of the cave to ensure the normal operation of the device.

[0028] Working principle: Before use, the mounting plate 14 can be pressed into the inside of the rotating groove 25, so that the first electromagnet 15 and the second electromagnet 20 are adsorbed together, thereby fixing the mounting plate 14 inside the rotating groove 25. On the one hand, it is convenient for storage, and on the other hand, it is convenient to place the heating seat 2 into the pre-set hole. When in use, the heating seat 2 can be placed inside the hole opened for shale oil mining, and the heating seat 2 is made to penetrate deep into the ground. After reaching the ground, the main electric heating plate 10 and the auxiliary electric heating plate 13 can be powered, so that the main electric heating plate 10 and the auxiliary electric heating plate 13 generate heat, which can generate a large amount of heat in a short time and efficiently transfer the heat to the surrounding underground environment, thereby realizing in-situ reforming and heating of the underground shale oil, thereby greatly improving the efficiency of shale oil mining, reducing mining costs, and reducing the impact on the environment. In addition, after the heating seat 2 enters the underground space, the power supply to the second electromagnet 20 can be stopped, so that the second electromagnet 20 loses its magnetism, thereby causing the second electromagnet 20 to stop applying power to the first electromagnet 15 By applying an adsorption force, the torsion spring 23 can restore its deformation, so that the rotating sleeve 9 can be rotated from the inside of the rotating groove 25 to the outside of the rotating groove 25, thereby changing the position of the auxiliary electric heating plate 13, so that the originally relatively concentrated heating area is expanded, and the auxiliary electric heating plate 13 can cover a wider underground area, thereby significantly improving the heating range. By expanding the heating range, the shale oil layer can be heated more comprehensively and evenly, further improving the shale oil reforming effect and mining efficiency. The second power contact 22 and the first power contact 17 can ensure that the device supplies power to the auxiliary electric heating plate 13 when the rotating sleeve 9 rotates to ensure the heating effect. The device can be connected to an external power supply device through the power socket 11, the connecting socket and the connecting wire 8. In addition, the first threaded connector 3 can be connected to the extension pipe 1, and the extension pipes 1 can also be connected to each other through the second threaded connector 7, so that it is suitable for placing the heating seat 2 at different depths underground. In addition, the device can be erected at the entrance of the cave through the provided frame ring 4 and the frame plate 6 to ensure the normal operation of the device.

[0029] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. An underground heating device for in-situ reforming of shale oil, characterized in that: include: The heating seat (2) has a bottom surface provided with a plurality of rotation grooves (25) rotatably arranged around its center; an inner sleeve rod (24) disposed in the rotation groove (25); A rotating ring (21) is fixed to the middle of the inner sleeve rod (24), and a second electrical contact piece (22) is provided on the outer peripheral wall of the rotating ring (21); A mounting plate (14) having an auxiliary electric heating plate (13) disposed on one side plane thereof; A rotating sleeve (9) is connected to one end of the mounting plate (14), and has a circular groove (18) axially extending therethrough and cooperating with the inner sleeve rod (24); a central portion of the circular groove (18) is provided with an annular groove (16) radially outwardly; the annular groove (16) is rotatably engaged with the rotating ring (21), and a first electrical contact piece (17) and a second electrical contact piece (22) in the rotating sleeve (9) are always in contact; a torsion spring (23) disposed between the circular groove (18) and the inner sleeve rod (24), and adapted to drive the mounting plate (14) to flip from inside the rotating groove (25) to outside the rotating groove (25); An electric adsorption device is provided between the mounting plate (14) and the rotating groove (25), and is suitable for driving the mounting plate (14) to adsorb into the rotating groove (25) or to separate the mounting plate (14) and the rotating groove (25).

2. The underground heating device for in-situ reforming of shale oil according to claim 1, characterized in that: The electric adsorption device comprises a second electromagnet (20) fixed in the rotating groove (25), and a first electromagnet (15) is provided on the end surface of the mounting plate (14) for adsorbing or separating from the second electromagnet (20).

3. The underground heating device for in-situ reforming of shale oil according to claim 1, characterized in that: A main heating plate (10) is also provided at the bottom center of the heating seat (2).

4. The underground heating device for in-situ reforming of shale oil according to claim 1, characterized in that: The top of the heating seat (2) is connected to an extension pipe (1).

5. The underground heating device for in-situ reforming of shale oil according to claim 4, characterized in that: The heating seat (2) is provided with an electrical socket (11), and the extension tube is provided with a connecting wire (8) connected to the electrical socket (11). Heat is supplied to the auxiliary electric heating plate (13) through the connecting wire (8) via the electrical socket (11), the second electrical contact piece (22), and the first electrical contact piece (17).

6. The underground heating device for in-situ reforming of shale oil according to claim 4, characterized in that: A frame ring (4) is slidably mounted on the outer side of the extension pipe (1), four clamping sleeves (5) are fixedly mounted on the outer side of the frame ring (4), a clamping block (19) is fixedly mounted inside each of the four clamping sleeves (5), and a frame plate (6) is fixedly mounted on one end of the clamping block (19).

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