Multifunctional rocket power stratum transformation device

Abstract

The invention belongs to the technical field of oil and gas exploitation equipment, and particularly relates to a multifunctional rocket power stratum transformation device which comprises a stratum transformation main body, a combustion negative pressure integrated chamber is arranged in the stratum transformation main body, fuel or a cavity is arranged in the combustion negative pressure integrated chamber, and a shaft is arranged on the outer side of the stratum transformation main body. The outer side of the shaft is a stratum; the combustion negative pressure integrated chamber is communicated with a shaft through a channel window formed by explosion of the detonating cord system; the fuel is used for outputting energy to a shaft through the stratum transformation main body and forming fractures in the stratum; a cavity of the combustion negative pressure integrated chamber is used for absorbing energy in a shaft, reducing the pressure in the well and removing blockage of an oil flow channel; the combustion negative-pressure integrated chamber can serve as a combustion chamber to release high-energy gas to fracture a stratum and can also serve as a negative-pressure cavity to absorb energy, namely, the negative-pressure blockage removal effect is achieved, and a seepage channel is dredged. The device is simple in structure, low in cost, diversified in function and high in applicability.

Description

[0001] This application is a divisional application of the Chinese patent application filed on August 5, 2018, with application number 201810881482.4 and invention name “A multifunctional rocket-powered formation transformation device”. This application claims the priority of the Chinese patent application filed on October 28, 2017, with application number 201721405107.X. Technical Field

[0002] The invention belongs to the technical field of oil and gas exploitation, and relates to a tool for increasing the production of oil, gas and water wells, in particular to a multifunctional rocket-powered formation transformation device. Background Art

[0003] After the wellbore is built, the oil and gas layer is opened by perforation, connecting the wellbore and the formation to form an oil flow channel. Various factors in the mining process can cause the deterioration of the seepage condition and affect the smooth flow of the oil flow channel. The blockage of the channel and the change of the permeability of the formation need to be restored and transformed by professional means, such as fracturing, high-energy gas fracturing, negative pressure unblocking, etc.

[0004] Perforating forms an oil flow channel, which is completed by a perforator, especially a gun body perforator. A gun body perforator is a civil blasting equipment for oil and gas wells, which consists of a perforating gun body with a high-strength alloy steel pipe (such as 32GrMo4) with threads at both ends that can withstand the impact of explosions, and threaded sealing connectors (middle joint, gun head, gun tail) and perforating bullets driven by shaped charges (such as RDX explosives). The Oil and Gas Well Perforating Technology (2012.4 Petroleum Industry Press), edited by David Lu, introduces the structure, processing and use of various perforating equipment in detail. The description of the perforating gun in Chapter 2, Section 3, states that a gun body perforating gun usually forms a completely sealed cavity with a gun head, a gun body, a connecting joint and a gun tail. Its function is to protect the perforating bullets, bullet racks, detonating cords, detonators and other components in the perforating gun cavity from the impact of underground high pressure, acid and alkali, and vibration and impact during construction, to ensure the reliable operation of pyrotechnic devices, and to withstand the impact of the explosion of perforating bullets and explosives.

[0005] Detonating cord for oil and gas wells refers to blasting equipment used in oil perforating systems, mainly used to connect perforating bullets and perforating bullets, and plays a role in transmitting explosions. In 2007, the National Defense Industry Press published "Civilian Explosives and Safety", edited by Zhang Guoshun, Chapter 6, Section 6.3, specifically discusses detonating cord for oil and gas wells. In oil perforating, the detonating cord model can be selected according to the amount of explosives, the type of explosives, and the characteristics of the detonating cord (see SY / 6411 standard). The detonating cords mentioned in this application are all detonating cords for oil and gas wells.

[0006] High Energy Gas Fracture (HEGF) is a formation reform measure that uses a large amount of high-temperature and high-pressure gas generated by the rapid combustion of gunpowder or composite solid rocket propellant in the wellbore to press out a radial multi-fracture system on the underground production layer, improve the permeability of the near-well area, and thus increase the production of oil and gas wells and the injection volume of water injection wells. Composite solid rocket propellant is referred to as composite propellant. It is a gunpowder made by mixing and curing inorganic oxidants (ammonium perchlorate, ammonium nitrate, etc.), combustion agents (aluminum powder, etc.) and polymer binders. It is usually divided into polysulfide rubber composite propellants, polyurethane composite propellants, terminal hydroxyl polybutadiene composite propellants, and terminal carboxyl polybutadiene composite propellants according to the type of polymer binder. At present, there are many forms of high-energy gas formation reforming devices using composite solid rocket propellants as energy, including simple composite propellant columns, composite propellant columns placed in open screen tubes (application number: CN200910023430.4), composite propellant columns placed in closed steel pipes and pressure relief holes opened with special perforating bullets (application number: CN201210327368.X), a pulse deflagration fracturing device for ultra-high temperature and high pressure wells, and a StimGun system with composite propellant coated on the perforating gun combined with perforating technology (USP 5775426) and various composite perforations. The fuel agent used to generate high-energy gas underground needs to be temperature-resistant and waterproof when in contact with well fluid, and needs to be specially prepared; and although the agent does not need to be waterproof under sealed conditions, special pyrotechnic elements (perforating bullets, etc.) are required to open pressure relief holes, and the combination with the perforator components requires a specific design of the form of the agent. The built-in composite perforator places gunpowder and perforating bullets in the gun body at the same time. The gun body cavity must simultaneously bear the impact of the perforating bullet explosion and the gunpowder deflagration. A specially designed pressure relief channel is required, which has a complex structure and the output gas energy is limited, affecting the formation transformation effect.

[0007] Dynamic negative pressure unblocking is another method of unblocking seepage channels. Its principle is to quickly absorb the medium in the wellbore through the cavity of the negative pressure device, so that the pressure in the wellbore drops instantly, generating instantaneous impact backflow, flushing the perforation channel and the compaction zone around the channel, and is usually used in combination with perforation. At present, most of the negative pressure devices used at home and abroad are of two types: punching bullet opening pressure relief and piston opening pressure relief. Patent CN201439709 discloses a dynamic negative pressure perforator, in which a punching bullet is installed on the bullet rack of the perforator. The punching bullet is a special bullet that only opens holes in the gun body and does not damage the casing and cement ring of the oil and gas well. It is also called a "hole-opening bullet". After the perforator is detonated, the number of holes shot through the gun body is more than that of the original perforator, which expands the pressure relief space, thereby releasing the wellbore pressure and achieving dynamic negative pressure. Patent CN101994493 discloses a dynamic pressure relief device, which is installed at the lower end of the perforator. The detonation pressure generated after the perforator is detonated pushes the impact rod downward, and then pushes the piston downward, connecting the inner cavity of the pressure relief device with the lateral through hole located in the middle of the opening center connection, so that the well fluid in the wellbore enters the pressure relief chamber through the opening center connection, thereby reducing the pressure in the wellbore and achieving dynamic negative pressure. The existing negative pressure devices have the following main disadvantages: (1) The pressure relief device that uses perforating bullets for perforating pressure relief adds a large number of perforating bullets to the perforator, which generates a large amount of extra explosion gas, reduces the negative pressure effect, and increases the cost. (2) The pressure relief device that uses a piston for perforating pressure relief has a complex structure, and there are many intermediate links such as the impact rod and the piston. The perforation speed on the pressure relief device is slow, and the drainage channel area is small; in addition, the effect of establishing negative pressure during the perforating operation is not obvious, which reduces the overall process effect of dynamic negative pressure perforating and cannot fully reflect the advantages of dynamic negative pressure perforating.

[0008] The above-mentioned plugging removal and formation transformation technologies are either limited by the performance of the reagents or the complex effects of the devices, which increase their product costs and operating costs, make the operations complicated, and limit their applications. Summary of the invention

[0009] In view of the deficiencies in the above technologies, the present invention provides a blockage removal and formation transformation device which has a simple structure and is generally applicable.

[0010] The present invention provides a multifunctional rocket-powered formation reforming device, comprising: a formation reforming body, wherein the formation reforming body is provided with a combustion negative pressure integrated chamber, wherein the combustion negative pressure integrated chamber is provided with fuel or a cavity, the outside of the formation reforming body is a wellbore, and the outside of the wellbore is a formation; the combustion negative pressure integrated chamber is connected to the wellbore through a channel window formed by the explosion of a detonating cord system; the fuel is used to output energy to the wellbore through the formation reforming body to create cracks in the formation; the cavity of the combustion negative pressure integrated chamber is used to absorb energy in the wellbore, reduce the pressure in the well, and relieve blockage of the oil flow channel.

[0011] Preferably, the detonating cord system comprises a detonating cord and a detonating cord knot (explosive strip), and the detonating cord knot is formed by stacking and gathering detonating cords to form the channel window.

[0012] Preferably, the combustion negative pressure integrated chamber has an inner tube; the fuel is in the inner tube.

[0013] Preferably, the combustion negative pressure integrated chamber has an outer shell on the outside; the outer shell has a groove area; the groove area (weak area) is a part that is relatively easy to deform under certain impact by reducing the thickness of part of the outer shell material (more than 1 / 2 of the wall thickness) relative to the wall thickness of the outer shell; the inner side of the inner wall of the groove area has the detonating cord knot, and the detonating cord knot explodes and penetrates the groove area to form a channel window, thereby connecting the combustion negative pressure integrated chamber with the wellbore.

[0014] Preferably, the inner tube has an outer shell on its outer side; a gap is formed between the inner tube and the outer shell; and the detonating cord system passes through the gap.

[0015] Preferably, the outer side of the inner tube and / or the inner side of the outer shell has a heat insulation layer.

[0016] Preferably, both ends of the formation transformation body are provided with connecting joints respectively; the two connecting joints are provided with a first detonating cord hole and a second detonating cord hole respectively; the detonating cord enters from the first detonating cord hole and passes through the second detonating cord hole; the detonating cord is used to transfer detonation energy.

[0017] Beneficial effects of the present invention:

[0018] According to the downhole conditions and the wellbore conditions, the present invention adjusts the amount of fuel, from nothing to something, so that the formation transformation device changes from energy absorption to energy output, thereby realizing the functional change from negative pressure unblocking to high-energy gas fracturing and seam creation. The present invention is easy to connect with other pyrotechnic devices, has strong adaptability, and can be coordinated with a variety of processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a multifunctional rocket-powered formation reforming device of the present invention.

[0021] Figure 2The present invention is a working principle diagram of a multifunctional rocket-powered formation reforming device.

[0022] Figure 3 The present invention Figure 1 Schematic diagram of the structure of a negative pressure plugging removal tool in which no fuel can be connected to the cavity.

[0023] Figure 4 The present invention Figure 1 Schematic diagram of the detonating cord knot in the medium detonating cord system.

[0024] Figure 5 yes Figure 1 A partial enlargement of the combination of the middle detonating cord knot and the groove area of ​​the casing.

[0025] Figure 6 It is a schematic diagram of a combination of a multifunctional rocket-powered formation reforming device and a perforator according to the present invention.

[0026] Figure 7 Is the perforating gun connected ( Figure 1 sectional view of the connection joint in FIG.

[0027] Figure 8 Is the perforating gun body ( Figure 1 sectional view of the shell).

[0028] Fig. 9 is the perforating gun cavity ( Figure 1 Schematic diagram of combustion negative pressure integrated chamber).

[0029] Fig.10 It is a schematic diagram of the perforator structure.

[0030] Description of reference numerals:

[0031] 1. Connecting joint; 2. Combustion negative pressure integrated chamber; 3. Detonating cord; 4. Inner tube; 5. Fuel; 6. Detonating cord knot (explosive strip); 7. Thermal insulation layer; 8. Grooved area (weak area); 9. Outer shell. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Reference Figure 1 A schematic diagram of the structure of a multifunctional rocket-powered formation reformation device is provided, which comprises: a formation reformation body, a combustion negative pressure integrated chamber 2 is provided in the formation reformation body, a fuel 5 or a cavity is provided in the combustion negative pressure integrated chamber 2, the outside of the formation reformation body is a wellbore, and the outside of the wellbore is a formation; the combustion negative pressure integrated chamber 2 is connected to the wellbore through a channel window formed by the explosion of the detonating cord system; the fuel 5 is used to output energy to the wellbore through the formation reformation body to create seams in the formation; the combustion negative pressure integrated chamber 2, whose cavity is used to absorb energy in the wellbore, reduce the pressure in the well, and remove the blockage of the oil flow channel. According to the downhole conditions and the wellbore conditions, the present invention adjusts the amount of fuel in some devices, from nothing to something, so that the formation reformation body is transformed from energy absorption to energy output, thereby realizing the functional change from negative pressure unblocking to high-energy gas fracturing and seam creation.

[0036] exist Figure 1 In the figure, the detonating cord system includes a detonating cord 3 and a detonating cord knot 6 (explosive strip), wherein the detonating cord knot 6 is formed by stacking and gathering the detonating cords 3 to form the channel window.

[0037] exist Figure 1In the figure, the inner side of the combustion negative pressure integrated chamber 2 is provided with an inner tube 4; the fuel 5 is in the inner tube 4.

[0038] exist Figure 1 In the figure, the outer side of the combustion negative pressure integrated chamber 2 is provided with an outer shell 9; the outer shell 9 is provided with a groove area 8; the groove area (weak area) is relative to the wall thickness of the outer shell, and is a part that is relatively easy to be deformed by force under a specific impact by reducing the thickness of part of the outer shell material (more than 1 / 2 of the wall thickness); the groove area 8 connects the combustion negative pressure integrated chamber 2 with the wellbore through the channel window blasted open by the detonating cord system.

[0039] exist Figure 1 In the embodiment, an outer shell 9 is provided on the outer side of the inner tube 4; a gap is provided between the inner tube 4 and the outer shell 9; and a detonating cord system passes through the gap.

[0040] exist Figure 1 In the embodiment, the outer side of the inner tube 4 and / or the inner side of the outer shell 9 has a heat insulation layer 7 .

[0041] exist Figure 1 In the present invention, two ends of the stratum transformation body are provided with connecting joints 1 respectively; the two connecting joints 1 are provided with a first detonating cord hole and a second detonating cord hole respectively; the detonating cord enters from the first detonating cord hole and passes through the second detonating cord hole.

[0042] Reference Figure 2 The working principle diagram of a multifunctional rocket-powered formation reforming device of the present invention is given. External detonation energy (detonation or transmission) enters the device through the central hole (first detonating cord hole) of the connecting joint 1 (as shown by arrow II), is transmitted from one end of the detonating cord 3 (as shown by arrow I), and propagates along the detonating cord 3 wound on the inner tube 4, reaches the groove area 8 (weak area) to trigger the detonating cord knot 6 to explode (as shown by arrow III), and continues to propagate backward and is output from the other end of the detonating cord 3 through the second detonating cord hole (as shown by arrow V). The detonating cord knot 6 explodes, and the explosion energy radially cuts the groove area 8 (weak area), and shatters the outer shell wall at the groove area 8 (weak area) to form a channel window. At the same time, the explosion energy stimulates the combustion of the fuel 5 here, and burns from here to both ends (as indicated by arrow VI), and the generated gas energy is ejected outward from the channel window (fire vent) (arrow IV), enters the wellbore, and reforms the formation. The number of channel windows is set according to the fuel and the amount of gas generated.

[0043] It should be pointed out that the combustion and negative pressure integrated chamber 2 should be called a combustion chamber when used for energy output, and should be called a negative pressure chamber when used for energy absorption, and the corresponding channel windows are respectively called flame nozzles and negative pressure windows.

[0044] Example 1: Combination Figure 1Specifically, a multifunctional rocket-powered formation reforming device for energy output includes: a connecting joint 1, a combustion negative pressure integrated chamber 2 (combustion chamber), a detonating cord 3, an inner tube 4, a fuel 5, a detonating cord knot 6 (explosive strip), and a thermal insulation layer 7. The combustion negative pressure integrated chamber 2 is a device cavity space enclosed by a thick-walled high-strength alloy steel pipe with threaded sealing structures at both ends and a connecting joint 1, in which an inner tube 4 is fixed; the fuel 5 (composite solid rocket propellant) is filled in the inner tube 4, and a thermal insulation layer 7 (medium) is provided between the inner tube 4 and the outer shell 9 of the combustion negative pressure integrated chamber 2; the detonating cord 3 passes through the gap between the inner tube 4 and the outer shell 9 of the combustion negative pressure integrated chamber 2, and forms a detonating cord knot 6 at the inner wall of the groove area 8 (weak area) of the outer shell of the combustion negative pressure integrated chamber 2, and the two ends of the detonating cord 3 pass through the central hole of the connecting joint 1 to connect with other pyrotechnic equipment (explosive transmission device or detonating device) to transmit detonation energy. The groove area 8 (weak area) is formed by reducing the thickness of part of the outer shell material relative to the thick wall of the combustion negative pressure integrated chamber 2, usually 1 / 3 of the original thickness, and is the part that is easily deformed under a specific impact. The number, size and position are set according to the specific situation; the insulation layer 7 (medium) can be a vacuum or any gaseous or solid insulation material. The design of the combustion negative pressure integrated chamber 2 can adopt a perforating gun body ( Figure 8 ) threaded sealing structure; the connection joint 1 can be a perforating gun head, a gun tail, a middle joint or a similar structure, which is determined according to the specific access component. The connection joint can generally adopt a middle joint ( Figure 7 ) structure, or make fine adjustments on this basis (such as enlarging the inner hole).

[0045] Example 2: Figure 3 As shown, this embodiment provides a dynamic negative pressure plugging removal tool for generating negative pressure, including a combustion negative pressure integrated chamber 2 (negative pressure chamber), a detonating cord 3, an inner tube 4, a detonating cord knot 6, and a connecting joint 1; the device has no fuel 5 and no insulation layer, and only serves as a pressure-reducing cavity for forming a negative pressure in the wellbore, and the channel window serves as a negative pressure channel. Multiple negative pressure chambers can be connected in series through the connecting joints 1 (hollow) on both sides, or connected with the perforator ( Fig.10 ) is connected, and its use method conforms to the perforation process. In this way, during the operation, the external detonation energy is transmitted from one end of the detonating cord 3 to stimulate the explosion of the detonating cord knot 6 to open the groove area 8 to form a channel window, and the medium in the well enters the cavity of the combustion negative pressure integrated chamber 2, causing the pressure in the wellbore to drop, generating a dynamic negative pressure effect, that is, dynamic negative pressure perforation.

[0046] Example 3: Figure 6 As shown, this embodiment provides a method of combining with a perforator, that is, the device for filling fuel 5 is connected to the perforator ( Fig.10) are connected, and the detonation is uniformly transmitted by the detonating cord 3; while perforating, the energy of the burning fuel 5 is released into the wellbore through the explosion of the detonating cord knot 6 to open the groove area 8 to form a channel window, increasing the pressure in the wellbore to create cracks in the formation and produce a formation transformation effect. Its use method conforms to the usual perforating process flow and is basically the same as the composite perforating construction method. In this way, since the combustion negative pressure integrated chamber 2 of the present invention can accommodate more gunpowder, the formation transformation effect formed by the high-energy gas is much better than that of ordinary composite perforating.

[0047] Need to explain, Figure 7 to Figure 10 It is a design commonly used in perforating tools in the prior art, in which the perforator ( Fig.10 ) From left to right are the detonating cord, gun head, gun body, positioning plate, bullet rack, perforating bullet, and gun tail. Fig. 9 For connecting with intermediate connection ( Figure 7 ) and the gun body ( Figure 8 ) perforating gun, the connection joint structure is generally adopted Figure 7 As shown, the design and application of the gun barrel seal body pressure Figure 8 Structure, gun body ( Figure 8 ) generally adopts 32GrMo4 ​​alloy steel pipe material, which can withstand the impact of perforating explosion without causing structural damage to the tool. The materials and designs, connection joint structures and internal connections mentioned in the present invention can all use the relevant materials and structures of the perforating gun.

[0048] The pyrotechnics involved in the present invention are only fuel and detonating cord, the fuel is composite solid rocket propellant gunpowder, and the detonating cord is a common and necessary pyrotechnic material for oil fields, which can be regarded as no special material of the present invention. In this way, the present invention can be regarded as only involving one pyrotechnic product (composite solid rocket propellant), which is convenient for management and use. The presence of the heat insulation layer and the sealed combustion chamber of the present invention greatly reduces the waterproof and temperature resistance of the propellant, thereby reducing the material cost.

[0049] The connection joint and the cavity part adopt the existing perforating gun structure, which is suitable for use in combination with the existing pipe string, increasing the versatility of the device of the present invention. The detonation network of the device is uniformly transmitted by the detonating cord, and the input and output are completed through the detonating cord, which is convenient for connection with other pyrotechnic devices, has strong adaptability, and can be coordinated with a variety of processes.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multifunctional rocket-powered formation reforming device, comprising a formation reforming body, characterized in that: The formation reforming body has a combustion negative pressure integrated chamber (2) inside, the outside of the formation reforming body is a wellbore, and the outside of the wellbore is a formation; the combustion negative pressure integrated chamber (2) has an outer shell (9) outside, and the outer shell (9) has a groove area (8); the groove area is formed by reducing the material thickness of the outer shell (9) by more than 1 / 2 of the wall thickness relative to the wall thickness of the outer shell (9), and is a part that is relatively easy to deform under specific impact; the combustion negative pressure integrated chamber (2) has fuel (5) or a cavity inside; The combustion negative pressure integrated chamber (2) is connected to the wellbore through a channel window formed by the explosion of a detonating cord system; the explosion system comprises a detonating cord (3) and a detonating cord knot (6), the detonating cord knot (6) being formed by stacking and gathering the detonating cords (3); external detonation energy is transmitted from one end of the detonating cord (3) to stimulate the detonating cord knot (6) to explode and open the groove area (8) to form the channel window; The fuel (5) is used to output energy to the wellbore through the formation transformation body to create fractures in the formation; The combustion negative pressure integrated chamber (2) has a cavity used to absorb energy in the wellbore, reduce the pressure in the well, and remove blockage in the oil flow channel.

2. The multifunctional rocket-powered formation reforming device according to claim 1, characterized in that: The inner side of the inner wall of the groove area (8) is provided with the detonating cord knot (6), and the detonating cord knot (6) explodes and breaks through to form the channel window to connect the combustion negative pressure integrated chamber (2) with the wellbore.

3. The multifunctional rocket-powered stratum reforming device according to claim 1, characterized in that: The combustion negative pressure integrated chamber (2) has an inner tube (4), and the fuel (5) is inside the inner tube (4).

4. The multifunctional rocket-powered stratum reforming device according to claim 3 is characterized in that: The outer side of the inner tube (4) is provided with the outer shell (9); a gap is provided between the inner tube (4) and the outer shell (9); and the detonating cord system passes through the gap.

5. The multifunctional rocket-powered formation reforming device according to claim 4, characterized in that: The outer side of the inner tube (4) and / or the inner side of the outer shell (9) has a heat insulation layer (7).

6. The multifunctional rocket-powered stratum reforming device according to claim 1, characterized in that: The two ends of the formation transformation body are respectively provided with connection joints (1); the two connection joints (1) are respectively provided with a first detonating cord hole and a second detonating cord hole; the detonating cord (3) enters from the first detonating cord hole and passes through the second detonating cord hole; the detonating cord (3) is used to transmit detonation energy.

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