A spin jet modular tubing that can be injected in layers

Abstract

The application discloses a layered injection rotary jet modular pipeline, which comprises an injection pipe assembly, a capsule and a drill bit. A plurality of injection pipe assemblies are sequentially connected, and each injection pipe assembly is provided with an injection hole for jetting chemical agents. The capsule is connected between two adjacent injection pipe assemblies, and the capsule is adapted to expand and abut against the well wall when the chemical agents are pressurized injected, so that the plurality of injection pipe assemblies form a plurality of layered separated injection chambers from top to bottom. The drill bit is arranged at the earth drilling end of the injection pipe assembly. The layered injection rotary jet modular pipeline can inject agents in layers, realizes the function of self-rotary jetting agents, improves the environmental remediation capacity, and improves the convenience of use, and the environmental remediation is more convenient.

Description

Technical Field

[0001] This invention relates to the field of environmental remediation technology, and in particular to a modular rotary jet pipeline capable of layered injection. Background Technology

[0002] Traditional in-situ remediation injection technology refers to the use of certain equipment to inject chemical agents into the ground. Through the physicochemical interaction between the chemical agents and pollutants, the mobility of pollutants is reduced, thereby reducing the toxicity of pollutants or making them non-toxic.

[0003] Currently, injection wells are typically constructed using drilling rigs, and then chemical agents are injected through injection pipes inserted into the well using high-pressure injection pumps. However, these injection pipes are ordinary tubular structures with spray holes, resulting in a relatively simple structure. Consequently, the chemical agents sprayed vertically into the injection well are not uniform, leading to limited environmental remediation capabilities. Summary of the Invention

[0004] The main objective of this invention is to provide a modular rotary spray pipeline that can be injected in layers, aiming to improve the uniformity of sprayed agents and thus enhance environmental remediation capabilities.

[0005] To achieve the above objectives, this invention proposes a modular swirl-jet pipeline capable of layered injection, comprising:

[0006] An injection tube assembly, wherein multiple injection tube assemblies are connected in sequence, and each injection tube assembly is provided with an injection hole for spraying a chemical agent;

[0007] A capsule, wherein adjacent injection tubing assemblies are connected via the capsule, the capsule being adapted to expand and abut against the wellbore wall during pressurized chemical injection, thereby forming multiple, separated injection chambers from top to bottom among the injection tubing assemblies; and

[0008] The drill bit is located on the drilling end of the injection pipe assembly.

[0009] Optionally, each of the injection tube assemblies includes a first tube segment, a second tube segment, a self-rotating injection section, and a rotating blade. The first tube segment and the second tube segment are detachably connected. The self-rotating injection section is located within the connection between the first tube segment and the second tube segment, and both ends of the self-rotating injection section are connected to the first tube segment and the second tube segment respectively via bearings. The self-rotating injection section is provided with the injection hole, and the rotating blade is located within the self-rotating injection section.

[0010] Optionally, the diameter of the self-rotating injection section is smaller than the diameter of the first section and the second section, wherein the diameters of the first section and the second section are the same.

[0011] Optionally, two adjacent injection pipe assemblies are connected by a snap-fit, and the snap-fit ​​is disengaged when the vibratory drill pulls the upper injection pipe assembly upward, thus separating the two adjacent injection pipe assemblies.

[0012] Optionally, the end of the first pipe section is provided with a female buckle, and the end of the second pipe section is provided with a male buckle. A vibration damping element is provided at the contact point between the male buckle and the female buckle to reduce vibration and noise.

[0013] Optionally, both ends of the self-rotating spray section are fitted with sealing rings that can slide circumferentially. The two sealing rings are respectively located on the outside of their corresponding bearings to seal the connection between the self-rotating spray section and the first pipe section and the connection between the self-rotating spray section and the second pipe section.

[0014] Optionally, the rotating blade includes a plurality of blades, which are evenly arranged at circumferential intervals on the inner wall of the self-rotating spray section.

[0015] Optionally, both ends of the capsule are threadedly connected to two adjacent injection tube assemblies via connecting sleeves.

[0016] Optionally, an avoidance window is provided on the second pipe section, and the injection hole is provided corresponding to the avoidance window.

[0017] Optionally, the capsule is made of flexible soft rubber.

[0018] In the technical solution of this invention, the modular rotary jet pipeline capable of layered injection includes injection pipe assemblies, a capsule, and a drill bit. Multiple injection pipe assemblies are connected sequentially, and each injection pipe assembly is provided with an injection hole for injecting chemical agents. Adjacent injection pipe assemblies are connected by the capsule, which is adapted to expand and abut against the well wall when chemical agents are injected under pressure, so that multiple injection pipe assemblies form multi-layered, separated injection chambers from top to bottom. The drill bit is located on the drilling end of the injection pipe assembly. In use, a vibratory drilling rig is first used to drill a hole downwards in the pipeline. After reaching the designated position, the hole is pulled upwards, and the capsule is unfolded from its folded state. Then, pressure injection is applied, and the pressure expands the capsule, blocking each section of the well wall, forming multi-layered, separated injection chambers from top to bottom. This achieves layered injection of chemical agents, improves the uniformity of agent injection in the vertical direction and around the well wall, and effectively enhances environmental remediation capabilities. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the modular jet grouting pipeline of the present invention in the drilling state when it is being injected in layers.

[0021] Figure 2 This is a schematic diagram of the modular rotary jet pipeline of the present invention in the injection state;

[0022] Figure 3 This is a schematic diagram of the injection pipe assembly in the modular rotary jet pipeline with layered injection capability of the present invention.

[0023] Figure 4 This is an exploded view of the injection tube assembly and the connected capsule in the layered injection modular spray pipeline of the present invention.

[0024] Figure 5 This is a schematic diagram of the self-rotating injection section in the modular rotary jet pipeline with layered injection capability of the present invention.

[0025] Explanation of icon numbers:

[0026] 10. Injection tube assembly; 20. Capsule; 30. Drill bit; 10a. Injection hole; 101. Injection chamber; 11. First tube section; 12. Second tube section; 13. Self-rotating injection section; 14. Rotating blade; 15. Bearing; 16. Sealing ring; 12a. Clearance window; 17. Connecting sleeve; 121. Male thread; 111. Female thread.

[0027] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0031] This invention proposes a modular jet grouting pipeline that can be injected in layers, which is applicable to the construction of injection wells during environmental remediation.

[0032] Reference Figure 1 and Figure 2 In one embodiment of the present invention, the modular rotary injection pipeline capable of layered injection includes an injection pipe assembly 10, a capsule 20, and a drill bit 30. Multiple injection pipe assemblies 10 are connected sequentially, and each injection pipe assembly 10 is provided with an injection hole 10a for injecting chemical agents. Adjacent injection pipe assemblies 10 are connected via capsules 20, which are adapted to expand and abut against the well wall during pressurized injection of chemical agents, thereby forming multiple layers of separated injection chambers 101 from top to bottom. The drill bit 30 is located at the drilling end of the injection pipe assembly 10.

[0033] In this embodiment, the injection tube assembly 10 may include at least one tube section, which is not specifically limited here.

[0034] The capsule 20 can be made of flexible soft material such as rubber or silicone, preferably a rubber capsule, but this is not limited. In this embodiment, the capsule 20 can have an enlarged diameter and can withstand a certain amount of pressure. Figure 1 and Figure 4 As shown, the two ends of the capsule 20 can be threadedly connected to the two adjacent injection tube assemblies 10 via connecting sleeves 17 for easy assembly and disassembly.

[0035] The drill bit 30 can be a pointed solid steel structure component and can be threaded to the drilling end of the injection pipe assembly 10 for easy assembly and disassembly.

[0036] Understandably, during use, a vibratory drill is first used to drill a hole downwards in the pipeline. After reaching the designated position, the hole is then lifted upwards, causing the capsule 20 to unfold from its folded state. Pressure is then applied for injection, and the pressure forces the capsule 20 open (i.e., from the capsule 20 outwards). Figure 1 The contraction state becomes Figure 2 (In the expanded state), each section of the well wall is blocked, forming a multi-layered injection chamber 101 from top to bottom. Each injection pipe assembly 10 forms an injection chamber 101, realizing the layered injection of chemical agents, improving the uniformity of agent spraying in the vertical direction, and effectively enhancing the environmental remediation capability.

[0037] To enable each injection chamber 101 to spray chemical agents into the soil in a circumferential rotation towards the well wall, thereby improving the uniformity of the circumferential distribution of the chemical agents and further enhancing environmental remediation capabilities, reference is made to... Figures 1 to 4 In one embodiment, each injection pipe assembly 10 may include a first pipe section 11, a second pipe section 12, a self-rotating injection section 13, and a rotating blade 14. The first pipe section 11 and the second pipe section 12 are detachably connected. The self-rotating injection section 13 is located within the connection between the first pipe section 11 and the second pipe section 12, and both ends of the self-rotating injection section 13 are connected to the first pipe section 11 and the second pipe section 12 respectively via bearings 15. The self-rotating injection section 13 is provided with injection holes 10a, and there may be multiple injection holes 10a. The multiple injection holes 10a can be evenly spaced along the circumference of the self-rotating injection section 13. The rotating blade 14 is located within the self-rotating injection section 13. This configuration, while achieving rotary injection of chemical agents, improves the uniformity of agent injection in the circumferential direction of the well wall, facilitates the disassembly and assembly of the self-rotating injection section 13 and the rotating blade 14, improves the convenience of environmental remediation, and saves manufacturing costs.

[0038] Main reference Figure 4 In this embodiment, the diameter of the self-rotating injection section 13 can be smaller than the diameter of the first section 11 and the second section 12, and the diameters of the first section 11 and the second section 12 can be set to be the same. This can further improve the ease of assembly and make the amount of chemical agent in the injection chamber 101 as uniform as possible, with more balanced pressure, which is conducive to uniform chemical agent injection.

[0039] Reference Figure 3 and Figure 4 In this embodiment, an avoidance window 12a may be provided on the second pipe section 12, and the injection hole 10a is provided corresponding to the avoidance window 12a so that the chemical agent can be sprayed out circumferentially.

[0040] like Figure 5As shown, in one embodiment, the rotating blade 14 may include multiple blades, which are evenly arranged at circumferential intervals on the inner wall of the self-rotating injection section 13. In this way, the injection hole 10a of the self-rotating injection section 13 can rotate synchronously with the blades.

[0041] In this embodiment, stainless steel blades with a certain angle can be installed inside the water flow inlet direction of the self-rotating spray section 13, so that they can rotate under the push of the water flow, thereby driving the injection hole 10a at the front to rotate, thus realizing the function of self-rotating spraying agent.

[0042] To facilitate the disassembly and assembly of the injection pipe assembly 10 and improve the efficiency of injection well construction, the following references are mainly made: Figures 1 to 4 In one embodiment, two adjacent injection tube assemblies 10 are connected by a snap-fit ​​mechanism, and the snap-fit ​​is disengaged when the vibratory drill pulls the upper injection tube assembly 10 upwards, thus separating the two adjacent injection tube assemblies 10. That is, for two adjacent injection tube modules, the second tube segment 12 of the upper injection tube module is snapped into the first tube segment 11 of the lower injection tube module, and the snap-fit ​​is inside the capsule 20.

[0043] Specifically, the connection between the first pipe section 11 and the second pipe section 12 can be provided with a female thread 111 and a male thread 121, respectively. The second pipe section 12 at the front can be a constricted male thread 121, and the first pipe section 11 at the rear can be a female thread 111. The two pipe sections are connected by a flexible connection. When the drilling rig is used to vibrate and press down (i.e., in the drilling and injection state) to inject the pipe assembly 10, the two pipe sections can be rigidly connected to each other to transmit downward pressure; when the injection pipe assembly 10 is lifted upward, the snap-fit ​​fails and disconnects, and the first pipe section 11 and the second pipe section 12 are released from each other.

[0044] like Figures 1 to 4 When performing environmental remediation, the following steps can be followed:

[0045] 1) Install the drill bit 30 at the front end of the first injection pipe assembly 10 (the first injection pipe assembly 10 may only use a small section of pipe, namely the first pipe section 11 mentioned above);

[0046] 2) Using a vibratory drill, drive the injection pipe assembly 10 and drill bit 30 into the ground;

[0047] 3) Rotate the threaded mounting to install the folded capsule 20;

[0048] 4) Insert the male buckle 121 into the female buckle 111 and install the second injection tube assembly 10;

[0049] 5) Use a vibratory drill to drive the injection pipe assembly 10 into the ground;

[0050] 6) By analogy, install the target number of injection tube assemblies 10 and capsules 20 in sequence, so that the first injection tube assembly 10 reaches the predetermined depth (i.e., the designated position, at which point the male buckle 121 and the female buckle 111 are engaged).

[0051] 7) Use a vibratory drill to pull the last section of the injection pipe assembly 10 outward. During the pulling process, the male thread 121 and female thread 111 between each section of the pipe body are disconnected, and the capsule 20 unfolds.

[0052] 8) Connect a pressure pipe to the inlet at the end of the first pipe section 11 of the last injection pipe assembly 10 to inject high-pressure chemical water flow;

[0053] 9) The high-pressure agent expands the capsule 20, and the self-rotating spray section 13 starts to rotate under the action of water flow, realizing the layered injection of chemical agents and the injection of agents in a rotating manner;

[0054] 10) After the chemical agent injection is completed, pull out the last injection tube assembly 10, remove its first tube section 11 and second tube section 12 in sequence, and remove the capsule 20 connected to it.

[0055] 11) Continue in this manner, removing the adjacent injection pipe assembly 10 until the drill bit 30 is completely removed.

[0056] Based on the above embodiments, the end of the first pipe section 11 may be provided with a female buckle 111, and the end of the second pipe section 12 may be provided with a male buckle 121. A vibration damping element is provided at the contact point between the male buckle 121 and the female buckle 111 to reduce vibration and noise.

[0057] Among them, the vibration damping component can be a rubber vibration damping pad or other vibration damping device, in order to reduce vibration and noise during downward vibration drilling and extend the service life of the injection pipe.

[0058] In addition, to prevent water from leaking out of the pipes through gaps and to improve the sealing of this stratified injection rotary jet modular pipeline, the following references are mainly made: Figure 4 In one embodiment, sealing rings 16 that can slide circumferentially can be fitted at both ends of the self-rotating spray section 13. The two sealing rings 16 are respectively located on the outside of their corresponding bearings 15 to seal the connection between the self-rotating spray section 13 and the first pipe section 11 and the connection between the self-rotating spray section 13 and the second pipe section 12.

[0059] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A modular rotary jet pipeline with layered injection capability, characterized in that, include: An injection tube assembly is provided, wherein multiple injection tube assemblies are connected in sequence, and each injection tube assembly is provided with an injection hole for spraying a chemical agent; each injection tube assembly includes a first tube segment, a second tube segment, a self-rotating injection segment, and a rotating blade. The first tube segment and the second tube segment are detachably connected, the self-rotating injection segment is located within the connection between the first tube segment and the second tube segment, and both ends of the self-rotating injection segment are respectively connected to the first tube segment and the second tube segment via bearings. The self-rotating injection segment is provided with the injection hole, and the rotating blade is located within the self-rotating injection segment. The capsule is used to connect adjacent injection tubing assemblies. The capsule is adapted to expand and abut against the well wall when chemical agents are injected under pressure, so that multiple injection tubing assemblies form a multi-layered, separate injection chamber from top to bottom. The two adjacent injection pipe assemblies are connected by the snap fastener, and the snap fastener is disengaged when the vibratory drill pulls the upper injection pipe assembly upward, thus separating the two adjacent injection pipe assemblies; as well as The drill bit is located on the drilling end of the injection pipe assembly; In use, the vibratory drill is first used to drill a hole downwards in the pipeline. After reaching the designated position, it is then lifted upwards, and the bladder is pulled open from its folded state. Then, pressure is applied and injected, and the pressure expands the bladder, blocking each section of the well wall.

2. The modular rotary jet pipeline with layered injection capability as described in claim 1, characterized in that, The diameter of the self-rotating injection section is smaller than the diameter of the first section and the second section, while the diameters of the first section and the second section are the same.

3. The modular rotary jet pipeline with layered injection capability as described in claim 2, characterized in that, The first pipe section is provided with a female buckle at its end, and the second pipe section is provided with a male buckle at its end. A vibration damping element is provided at the contact point between the male buckle and the female buckle to reduce vibration and noise.

4. The modular rotary jet pipeline with layered injection capability as described in claim 1, characterized in that, Both ends of the self-rotating spray section are fitted with sealing rings that can slide circumferentially. The two sealing rings are respectively located on the outside of their corresponding bearings to seal the connection between the self-rotating spray section and the first pipe section and the connection between the self-rotating spray section and the second pipe section.

5. The modular rotary jet pipeline with layered injection capability as described in claim 1, characterized in that, The rotating blade includes multiple blades, which are evenly arranged at circumferential intervals on the inner wall of the self-rotating spray section.

6. The modular rotary jet pipeline with layered injection capability as described in claim 1, characterized in that, Both ends of the capsule are threadedly connected to the two adjacent injection tube assemblies via connecting sleeves.

7. The modular rotary jet pipeline with layered injection capability as described in claim 1, characterized in that, The second pipe section is provided with an avoidance window, and the injection hole is provided corresponding to the avoidance window.

8. The modular rotary jet pipeline with layered injection capability as described in claim 1, characterized in that, The capsule is made of flexible soft rubber.

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