A device and method for on-site injection of chemical self-generating pyrolizing blocking agent

Abstract

The application discloses a device and method for on-site injection of chemical self-generating pyrolysis plugging agent, which comprises a plugging agent feeding device, a plugging agent feeding device, a solid plugging agent conveying device, a liquid plugging agent conveying device and an injection device controller.

Description

Technical Field

[0001] This invention relates to the field of oil and gas field development and evaluation technology, specifically to a device and method for on-site injection of chemical self-generating thermal deblocking agents. Background Technology

[0002] Due to factors such as temperature, pressure, and gas flow disturbance, hydrate blockage may occur in oil and gas wells during commissioning or production. To remove hydrate blockage in the wellbore, depending on the actual conditions, either a solid or liquid self-generating chemical unblocking agent needs to be added. Currently, commonly used self-generating chemical unblocking agents consist of three parts. However, in actual field application, problems such as low application efficiency, cumbersome procedures, low safety, and high labor intensity exist.

[0003] In response to the above situation, most commonly used solid agent dosing devices currently involve placing a single solid agent in the dosing device on-site and then adding the agent into the system through dosing pipes and pumps. For example, CN201920748665.9 discloses a continuous solid agent dosing device for wastewater treatment plants, including a mixing tank, a dosing pump, and a dosing pipe vertically arranged on the upper side of the mixing tank. A star-shaped discharge gate valve is installed at the top of the dosing pipe and is driven to rotate by a variable frequency dosing motor. The upper sides of the mixing tank are also equipped with stirring mechanisms with stirring rods that extend into the mixing tank and can be raised and lowered. This device has a simple structure, is not prone to clogging, and is easy to maintain. National Standard N201921172227.9, titled "An Integrated Solid Drug Dissolving and Dosing Device," discloses an integrated solid drug dissolving and dosing device consisting of a mixing tank, a storage funnel, a stirring motor, and a sewage pipe. This device allows for remote control and saves space, reduces manufacturing and operating costs, and improves production efficiency. National Standard CN201521059574.2, titled "A Jet-Stirring Dosing Device," discloses a jet-stirring dosing device including a mixing tank, a centrifugal pump, a storage tank, and a jet injector. Utilizing the characteristics of the jet injector, it achieves mixing and automatic dosing, automatically adding both liquid and solid drugs with controllable dosing speed, convenient and safe operation, and excellent drug mixing effect.

[0004] However, the existing on-site drug injection devices and methods have the following problems: (1) they cannot meet the requirement of simultaneous mixing and injection of three agents of solid self-heating deblocking agent; (2) they are not suitable for wellheads with pressure. Summary of the Invention

[0005] To address at least one of the problems and shortcomings of the aforementioned on-site chemical dispensing devices and methods, this invention provides an on-site dispensing device and method for chemically self-generating thermal deblocking agents. Using this invention, multiple agents (e.g., three agents) of solid chemically self-generating thermal deblocking agents can be simultaneously mixed and dispensed. During dispensing, the pressure at the wellhead can be balanced, ensuring smooth completion of the dispensing operation. This invention features convenient operation, rapid dispensing, and no safety hazards for personnel working at heights.

[0006] This invention is achieved through the following technical solution:

[0007] One object of the present invention is to provide an on-site dispensing device for chemically self-generating pyrolytic deblocking agents.

[0008] Another object of the present invention is to provide a method for on-site application of a chemically self-generating thermal deblocking agent.

[0009] In a first aspect, the present invention provides a field application device for a chemically self-generating pyrolytic deblocking agent, the field application device comprising:

[0010] The unblocking agent feeding device is used to complete the storage preparation work before the solid unblocking agent and / or liquid unblocking agent are added;

[0011] The unblocking agent dosing device has its top connected to the bottom of the unblocking agent feeding device and its bottom connected to the wellhead. It is used to balance the pressure inside the wellbore when the unblocking agent is added, so as to ensure that the unblocking agent is smoothly added into the wellbore.

[0012] A solid unblocking agent conveying device is used to smoothly convey one or more solid unblocking agents to an unblocking agent feeding device;

[0013] A liquid unblocking agent delivery device is used to prepare and deliver one or more liquid unblocking agents on-site to an unblocking agent feeding device;

[0014] The dispensing device controller is connected to the unblocking agent feeding device, the unblocking agent dosing device, the solid unblocking agent conveying device, and the liquid unblocking agent conveying device, and is used to perform actual control of solid unblocking agent conveying, liquid unblocking agent conveying, unblocking agent feeding, and unblocking agent dosing;

[0015] The on-site dispensing device is suitable for on-site dispensing of solid and / or liquid unblocking agents, enabling the sequential cyclic dispensing of multiple unblocking agents (such as A / B / C) in the required order.

[0016] In the above technical solution, when adding the unblocking agent on-site, first connect the bottom of the unblocking agent adding device to the wellhead, then place the unblocking agent feeding device on top of the unblocking agent adding device. Install the solid unblocking agent delivery device or liquid unblocking agent delivery device according to site requirements, and connect the power supply of the adding device controller and other devices. Through the liquid or solid unblocking agent delivery device, deliver the prepared liquid or solid unblocking agent to the designated storage cylinder. Start the sliding rail to send the storage cylinder into the unblocking agent feeding tank. Open the injection valve of the unblocking agent adding cylinder, close the well inlet valve of the unblocking agent adding cylinder, and close the control valves at the top and bottom of the pressure balance system. Start the feeding thruster, pushing the unblocking agent into the adding cylinder through the "X"-shaped barrier rubber plate. Repeat this method to alternately push two or three types of solid unblocking agents into the adding cylinder. After the feeding is completed, close the injection valve of the unblocking agent dosing cylinder, and then sequentially open the control valves at the top and bottom of the pressure balancing system and the wellhead valve of the unblocking agent dosing cylinder to complete the on-site feeding of the unblocking agent. This invention is applicable to the on-site feeding of both solid and liquid unblocking agents. It allows for the sequential feeding of various unblocking agents in the required order, simplifying operation, significantly reducing on-site personnel requirements, improving the efficiency of unblocking agent dosing, and making the unblocking agent dosing process more intelligent, thus providing strong support for the successful removal of natural gas hydrate blockages.

[0017] Furthermore, the unblocking agent feeding device includes a feeding pusher, a compression spring, an unblocking agent feeding box, and a "rice-shaped" barrier plate, arranged from top to bottom. Several storage cylinders are arranged around the unblocking agent feeding box for temporary storage of solid and liquid unblocking agents before injection. Each storage cylinder is connected to the unblocking agent feeding box via two sliding tracks. This structural design effectively enables the automatic addition of solid / liquid unblocking agents to the unblocking agent feeding device according to different sequential requirements.

[0018] A liquid unblocking agent injection valve is provided on the side of the storage cylinder. The liquid unblocking agent is injected into the unblocking agent feeding box by opening the liquid unblocking agent injection valve.

[0019] By pressing the feed pusher, the compression spring is compressed, thereby feeding the solid and / or liquid unblocking agent in the unblocking agent feed tank into the dosing cylinder through the "X" shaped barrier rubber plate.

[0020] Furthermore, the barrier sheet is a "star-shaped" barrier sheet, made of export-grade fluororubber sheet, which has properties such as acid and alkali resistance, aging resistance, and high temperature resistance up to 250 degrees Celsius. Specifically, the "star-shaped" barrier sheet is composed of hollow parts with a spacing of 2-5 mm, used to prevent solid unblocking agent from falling into the dosing cylinder due to its own gravity.

[0021] Furthermore, the feeding pusher achieves pushing through a built-in, integrated push rod, thereby controlling the amount of unblocking agent added;

[0022] The compression spring has a wire diameter of 2-4 mm, an outer diameter of 20-60 mm, a free length of 150-400 mm, and a total number of coils of 20-80; and

[0023] The compression spring works in conjunction with the feeding propulsion device to complete the single addition of solid unblocking agent to the storage cylinder.

[0024] Furthermore, the inner wall of the storage cylinder is made of Hastelloy, which is resistant to acid and alkali corrosion; the storage cylinder is cylindrical with a diameter of 20-50 mm and a height of 80-120 cm, and the diameter and height of the storage cylinder are smaller than those of the unblocking agent dosing cylinder.

[0025] As a preferred embodiment, the top of the storage cylinder is open, i.e., set as an open type (not sealed, set as an open type), for loading solid unblocking agent; the bottom of the storage cylinder is set as a semi-open type, for supporting the loaded solid unblocking agent.

[0026] Specifically, three storage cylinders are arranged around the unblocking agent feeding box, and six sliding tracks are arranged accordingly. Each storage cylinder is equipped with two sliding tracks, located at the top and bottom of the storage cylinder, respectively, to facilitate the smooth entry of the storage cylinder into the feeding box.

[0027] The sliding track, made of stainless steel, is connected at one end to the storage cylinder and at the other end to the unblocking agent feeding box. The sliding track is 80-120 cm long and its width is the same as the diameter of the storage cylinder, allowing the storage cylinder to slide flexibly on the track.

[0028] The included angle between adjacent sliding tracks on the same plane is 120 degrees, and the upper and lower adjacent sliding tracks are set to be parallel. The entire sliding track can rotate along the unblocking agent feeding box to complete the unblocking agent being added to the storage box through the conveying device.

[0029] Specifically, the unblocking agent feeding box consists of three straight lines, each 10-30 cm longer than the height of the storage cylinder, and made of Hastelloy alloy. Each straight line in the unblocking agent feeding box is equally spaced, with its top connected to the outer edge of the bottom of the feeding propeller and its bottom connected to the outer edge of the top of the unblocking agent dosing cylinder, used to hold the storage cylinder containing the sample.

[0030] Furthermore, the unblocking agent dosing device includes an unblocking agent dosing cylinder, a pressure balancing system, and a wellhead;

[0031] The unblocking agent dosing cylinder is connected to the bottom of the unblocking agent feeding device (i.e., the unblocking agent feeding box); the unblocking agent dosing cylinder is used to receive the unblocking agent from the unblocking agent feeding box. The unblocking agent is arranged in the order of the design scheme in the unblocking agent dosing cylinder and is successfully added into the wellbore through the dosing cylinder;

[0032] The top of the unblocking agent dosing cylinder is equipped with an unblocking agent dosing cylinder injection valve, and the bottom of the unblocking agent dosing cylinder is equipped with an unblocking agent dosing cylinder inlet valve, which are used to control the injection of the unblocking agent from the feed tank into the dosing cylinder and from the dosing cylinder into the wellbore; by opening the unblocking agent dosing cylinder inlet valve, the unblocking agent can be smoothly added to the wellbore through the wellhead;

[0033] The pressure balancing system is connected to the unblocking agent dosing cylinder. The pressure balancing system is equipped with a top control valve and a bottom control valve. The top control valve is located at the top of the unblocking agent dosing cylinder, and the bottom control valve is located at the bottom of the unblocking agent dosing cylinder. When adding the unblocking agent, opening the top control valve and the bottom control valve of the pressure balancing system can effectively balance the pressure inside the wellbore, allowing the unblocking agent to be smoothly introduced into the wellbore.

[0034] Furthermore, the inner diameter of the unblocking agent dosing cylinder is 20-60 mm and the length is 2-4 meters, which is suitable for the dosing of unblocking agents of different diameters;

[0035] The inner wall of the unblocking agent dosing cylinder is made of Hastelloy, which is resistant to acid and alkali. The overall material of the unblocking agent dosing cylinder can withstand a pressure of 140 MPa, making it suitable for high-pressure and ultra-high-pressure gas wells.

[0036] Furthermore, the balance pipe of the pressure balancing system is connected to the unblocking agent dosing cylinder to form a rectangle; the diameter of the balance pipe is 20-50 mm and the total length is 4-8 meters;

[0037] The inner wall of the balance tube of the pressure balancing system is made of Hastelloy, which is resistant to acids and alkalis.

[0038] Furthermore, the solid unblocking agent delivery device includes a solid unblocking agent storage tank and a solid unblocking agent delivery system;

[0039] The solid unblocking agent storage tank comprises several storage tanks for storing various types of solid unblocking agents. For example, the solid unblocking agent storage tank consists of three storage tanks: Solid Unblocking Agent Storage Tank A, Solid Unblocking Agent Storage Tank B, and Solid Unblocking Agent Storage Tank C, which can store one to three types of solid unblocking agents. Each storage tank has a length of 20-60 cm, a width of 30-60 cm, and a height of 20-40 cm, suitable for the temporary storage of 1-3 different types of unblocking agents.

[0040] The solid unblocking agent conveying system includes a solid unblocking agent conveyor belt, a solid unblocking agent conveyor belt support, and a solid unblocking agent conveyor belt base. The solid unblocking agent can be accurately put into the corresponding storage cylinder (such as storage cylinder A) through the solid unblocking agent conveyor belt, and the solid unblocking agent is conveyed by the solid unblocking agent conveying device.

[0041] The solid unblocking agent conveyor belt has a total length of 6-10 meters, a width of 20-60 centimeters, and an angle of 15-30 degrees with the ground.

[0042] Furthermore, the liquid unblocking agent delivery device includes a liquid unblocking agent storage tank, a high-pressure pump, and a delivery pipeline;

[0043] The top of the liquid unblocking agent storage tank is provided with a water inlet and a solid unblocking agent injection port. The water inlet is used to inject the corresponding solvent when preparing the liquid; the solid unblocking agent injection port is used to inject powdered or other solid unblocking agents.

[0044] The liquid unblocking agent storage tank is equipped with a drain valve on the lower left side, which is used to drain residual liquid unblocking agent. A liquid level observation window is located on the upper right side of the liquid unblocking agent storage tank, which is used to observe the liquid level in the tank so that injection can be stopped and replenished in a timely manner. An agitator is installed inside the liquid unblocking agent storage tank, which is used to stir the liquid during preparation, ensuring that the solid unblocking agent dissolves more evenly.

[0045] After the unblocking agent and solvent are added through the solid unblocking agent injection port and the water inlet of the storage tank, the agitator in the storage tank is turned on to continuously stir and fully dissolve the unblocking agent. The liquid unblocking agent is then transported to the corresponding storage tank (such as storage tank B) through a high-pressure pump and delivery pipeline. The remaining unblocking agent is discharged through the drain valve of the storage tank.

[0046] The liquid unblocking agent storage tank is 1-3 meters long, 1-2 meters wide, and 1-2 meters high. The inner wall material is Hastelloy, and it is suitable for preparing and storing acid and alkali solutions.

[0047] Furthermore, the dispensing device controller includes a solid unblocking agent delivery device control system, a liquid unblocking agent delivery device control system, an unblocking agent feeding device control system, an unblocking agent dosing device control system, and a dispensing device controller base;

[0048] The solid unblocking agent conveying device control system is equipped with four control buttons: start button, stop button, power button and temporary stop button. The four control buttons are used to control the solid unblocking agent conveying system to convey the solid unblocking agent to the corresponding storage cylinder.

[0049] The control system of the liquid unblocking agent delivery device is equipped with five control buttons: power switch button, stirring switch button, drain switch button, liquid unblocking agent injection valve switch button and pump switch button. The five control buttons are used to control the preparation of liquid unblocking agent and its delivery to the corresponding storage cylinder.

[0050] The unblocking agent feeding device control system is equipped with five control buttons: A storage cylinder button, B storage cylinder button, C storage cylinder button, power switch button, and feeding switch button. The five control buttons are used to control the solid unblocking agent to be added to the unblocking agent feeding tank in the order of the plan.

[0051] The unblocking agent dosing device control system is equipped with four control buttons: unblocking agent dosing cylinder injection valve switch button, unblocking agent dosing cylinder well inlet valve switch button, pressure balance system top control valve switch button, and pressure balance system bottom control valve switch button. These four control buttons are used to control the unblocking agent to be smoothly added into the wellbore.

[0052] Secondly, the present invention provides a method for on-site application of a chemically self-generating thermal deblocking agent, the method comprising the following steps:

[0053] S1: Install and connect the aforementioned on-site dispensing device for chemically self-generating heat-dissolving plugging agent, and power it on;

[0054] S2: Based on the start or stop of each control button in the solid unblocking agent delivery device control system, liquid unblocking agent delivery device control system, and unblocking agent feeding device control system, the solid unblocking agent and / or liquid unblocking agent are put into the unblocking agent dosing cylinder of the unblocking agent dosing device according to the design scheme sequence;

[0055] S3: Based on the activation or deactivation of each control button in the unblocking agent dosing device control system, during injection, it can balance the pressure at the wellhead and complete the dosing of solid and / or liquid unblocking agents into the wellbore.

[0056] Further, step S1 includes the following sub-steps:

[0057] 1) Connect the bottom of the unblocking agent dosing device to the wellhead;

[0058] 2) Install the unblocking agent feeding device on top of the unblocking agent dosing device;

[0059] 3) Based on the actual needs on site, install the solid unblocking agent delivery device on one side (e.g., the left side) of the unblocking agent feeding device;

[0060] 4) Adjust the position of the solid unblocking agent conveyor belt so that it is close to the storage cylinder in the unblocking agent feeding device, so that the unblocking agent can be smoothly added to the corresponding storage cylinder;

[0061] 5) Based on the actual needs on site, install the liquid unblocking agent delivery device on one side (e.g., the left side) of the unblocking agent feeding device, and connect the delivery pipeline to the liquid unblocking agent injection valve on the left side of the storage tank B;

[0062] 6) Connect the power cords of the filling device controller to the power cords of other devices;

[0063] 7) Turn on the power button of the solid unblocking agent delivery device control system in the dosing device controller;

[0064] 8) Turn on the power switch button of the liquid unblocking agent delivery device control system in the dosing device controller;

[0065] 9) Turn on the power switch button of the unblocking agent feeding device control system in the dosing device controller.

[0066] Further, step S2 includes the following sub-steps:

[0067] 10) If solid unblocking agent is to be added, first remove the packaging of the solid unblocking agent and place it in the corresponding storage box according to its category;

[0068] 11) Turn on the start button in the control system of the solid unblocking agent delivery device to deliver the solid unblocking agent to the corresponding storage cylinder (such as storage cylinder A). After the filling is completed, click the close button.

[0069] 12) If liquid unblocking agent is to be added, first add the unblocking agent to the liquid unblocking agent storage tank through the solid unblocking agent injection port, and then add an appropriate amount of water through the water injection port;

[0070] 13) Turn on the stirring switch of the liquid unblocking agent delivery device control system to fully dissolve the unblocking agent;

[0071] 14) Start the corresponding storage cylinder (e.g., storage cylinder A) button in the control system of the unblocking agent feeding device, and send the corresponding storage cylinder (e.g., storage cylinder A) into the unblocking agent feeding box through the sliding rail;

[0072] 15) Following the above process, add two or three solid unblocking agents into the dosing cylinder in sequence according to the design scheme.

[0073] Furthermore, step S3 includes the following sub-steps:

[0074] 16) Open the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, and start the feeding button of the unblocking agent feeding device control system to complete the feeding of solid unblocking agent;

[0075] 17) Close the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, and sequentially open the top control valve of the pressure balance system, the bottom control valve of the pressure balance system, and the well inlet valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device to smoothly add solid unblocking agent into the wellbore;

[0076] 18) When adding liquid unblocking agent, first activate the corresponding storage cylinder (e.g., storage cylinder B) button in the control system of the unblocking agent feeding device, and send the corresponding storage cylinder (storage cylinder B) into the feeding box through the sliding rail;

[0077] 19) Open the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, open the liquid unblocking agent injection valve in the unblocking agent feeding device, start the pump switch, and transport the liquid unblocking agent through the corresponding storage cylinder (storage cylinder B) to the unblocking agent dosing cylinder through the liquid delivery pipeline;

[0078] 20) Close the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, and sequentially open the top control valve of the pressure balance system, the bottom control valve of the pressure balance system, and the well inlet valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device to smoothly add the liquid unblocking agent into the wellbore;

[0079] 21) After the addition is completed, close the wellbore inlet valve of the unblocking agent dosing tube, the bottom control valve of the pressure balance system, and the top control valve of the pressure balance system in the control system of the unblocking agent dosing device.

[0080] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0081] This invention discloses a device and method for on-site injection of chemically self-generating thermal unblocking agents. It enables the simultaneous injection of multiple agents (e.g., three agents) of solid chemically self-generating thermal unblocking agents, balancing the pressure at the wellhead during injection to ensure smooth completion of the injection process. The device is characterized by convenient operation, rapid injection, and no safety hazards associated with working at heights. It significantly reduces on-site personnel requirements, improves the efficiency of unblocking agent injection, and makes the unblocking agent injection process more intelligent, providing strong support for the successful removal of natural gas hydrate blockages. Attached Figure Description

[0082] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0083] Figure 1 This is a schematic diagram of the structure of an on-site injection device for chemically self-generating pyrolytic plugging agent according to the present invention.

[0084] Figure 2 This is a schematic diagram of the controller structure of a chemical self-generating pyrolytic deblocking agent field dispensing device according to the present invention.

[0085] Figure reference numerals and corresponding component names:

[0086] 1-Unblocking agent feeding device; 11-Feeding propeller; 12-Compression spring; 13-Storage cylinder A; 14-Storage cylinder B; 15-Storage cylinder C; 16-Sliding track; 17-Unblocking agent feeding box; 18-Barrier adhesive plate; 19-Liquid unblocking agent injection valve;

[0087] 2-Unblocking agent dosing device; 21-Unblocking agent dosing cylinder; 211-Unblocking agent dosing cylinder injection valve; 212-Unblocking agent dosing cylinder inlet valve; 22-Pressure balancing system; 221-Pressure balancing system top control valve; 222-Pressure balancing system bottom control valve; 23-Wellhead;

[0088] 3-Solid unblocking agent conveying device; 31-Solid unblocking agent storage tank; 311-Solid unblocking agent storage tank A; 312-Solid unblocking agent storage tank B; 313-Solid unblocking agent storage tank C; 32-Solid unblocking agent conveying system; 321-Solid unblocking agent conveyor belt; 322-Solid unblocking agent conveyor belt support; 323-Solid unblocking agent conveyor belt base;

[0089] 4-Liquid unblocking agent delivery device; 41-Liquid unblocking agent storage tank; 411-Storage tank water inlet; 412-Solid unblocking agent injection port; 413-Liquid level observation window; 414-Storage tank drain valve; 415-Storage tank agitator; 42-High pressure pump; 43-Liquid delivery pipeline;

[0090] 5-Dispensing device controller; 51-Solid unblocking agent conveying device control system; 52-Liquid unblocking agent conveying device control system; 53-Unblocking agent feeding device control system; 54-Unblocking agent dosing device control system; 55-Dispensing device controller base. Detailed Implementation

[0091] In the following, the terms “comprising” or “may include” as used in various embodiments of the invention indicate the presence of an inventive function, operation, or element, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of the invention, the terms “comprising,” “having,” and their cognates are intended only to indicate a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or adding one or more combinations of the foregoing.

[0092] In various embodiments of the invention, the expression "or" or "at least one of A and / or B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A and / or B" may include A, may include B, or may include both A and B.

[0093] The expressions used in the various embodiments of the present invention (such as "first," "second," etc.) may modify various constituent elements in the various embodiments, but do not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, a first user device and a second user device refer to different user devices, although both are user devices. For example, a first element may be referred to as a second element without departing from the scope of the various embodiments of the present invention, and similarly, a second element may also be referred to as a first element.

[0094] It should be noted that if a description is made of "connecting" one component to another, then the first component can be directly connected to the second component, and a third component can be "connected" between the first and second components. Conversely, when a component is "directly connected" to another component, it can be understood that there is no third component between the first and second components.

[0095] The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to limit the various embodiments of the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the invention pertain. The terms (such as those defined in a generally used dictionary) are to be interpreted as having the same meaning as in the context of the relevant technical field and are not to be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of the invention.

[0096] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0097] Example 1

[0098] On one hand, embodiments of the present invention provide a device for on-site application of chemically self-generating pyrolytic deblocking agents, such as... Figure 1 and Figure 2 As shown, the on-site injection device includes: a deblocking agent feeding device 1, a deblocking agent dosing device 2, a solid deblocking agent conveying device 3, a liquid deblocking agent conveying device 4, and an injection device controller 5.

[0099] The unblocking agent feeding device 1 includes: a sliding track 16 connected to the unblocking agent feeding tank 17; cylindrical storage cylinders A 13, B 14, and C 15 connected to the end of the sliding track 16 respectively; the three storage cylinders enter the unblocking agent feeding tank 17 through the sliding track 16; a compression spring 12 is provided at the upper part of the unblocking agent feeding tank 17; a feeding pusher 11 is provided at the top of the compression spring 12; and a "rice"-shaped barrier plate 18 is provided at the bottom of the unblocking agent feeding tank 17. By pressing the feeding pusher 11, the compression spring 12 is compressed, thereby feeding the solid unblocking agent in the unblocking agent feeding tank 17 into the feeding cylinder through the "rice"-shaped barrier plate 18. A liquid unblocking agent injection valve 19 is provided on the side of the storage cylinder B 14; opening the liquid unblocking agent injection valve 19 can inject liquid unblocking agent into the unblocking agent feeding tank 17.

[0100] The unblocking agent dosing device 2 includes an unblocking agent dosing cylinder 21 connected to the unblocking agent feeding tank 17. An unblocking agent dosing cylinder injection valve 211 is located at the top of the cylinder 21, and an unblocking agent dosing cylinder well inlet valve 212 is located at the bottom. Opening the unblocking agent dosing cylinder well inlet valve 212 allows the unblocking agent to be smoothly added into the wellbore through the wellhead 23. A pressure balancing system 22 is connected to the unblocking agent dosing cylinder 21. The pressure balancing system 22 includes a pressure balancing system top control valve 221 and a pressure balancing system bottom control valve 222. When adding the unblocking agent, opening the pressure balancing system top control valve 221 and pressure balancing system bottom control valve 222 effectively balances the pressure inside the wellbore, allowing the unblocking agent to be smoothly injected into the wellbore.

[0101] The solid unblocking agent conveying device 3 includes a solid unblocking agent storage tank 31 and a solid unblocking agent conveying system 32. The solid unblocking agent storage tank 31 includes three storage tanks: solid unblocking agent storage tank A 311, solid unblocking agent storage tank B 312, and solid unblocking agent storage tank C 313, which can store one to three types of solid unblocking agents. The solid unblocking agent conveying system 32 includes a solid unblocking agent conveyor belt 321, a solid unblocking agent conveyor belt support 322, and a solid unblocking agent conveyor belt base 323. The solid unblocking agent can be accurately put into the storage tank A 13 through the solid unblocking agent conveyor belt 321, and the solid unblocking agent is conveyed by the solid unblocking agent conveying device 3.

[0102] The liquid unblocking agent delivery device 4 includes: a liquid unblocking agent storage tank 41, a high-pressure pump 42, and a delivery pipeline 43. The top of the liquid unblocking agent storage tank 41 is provided with a storage tank water inlet 411 and a solid unblocking agent injection port 412. The lower left part of the liquid unblocking agent storage tank 41 is provided with a storage tank drain valve 414, and the upper right part of the liquid unblocking agent storage tank 41 is provided with a liquid level observation window 413. The liquid unblocking agent storage tank 41 is provided with a storage tank agitator 415 inside the liquid unblocking agent storage tank 41. After the unblocking agent and solvent are added through the solid unblocking agent injection port 412 and the storage tank water inlet 411, the storage tank agitator 415 is turned on to continuously stir and make it fully dissolved. The liquid unblocking agent is delivered to the storage tank B through the high-pressure pump 42 and the delivery pipeline 43. The remaining unblocking agent is discharged through the storage tank drain valve 414.

[0103] The dispensing device controller 5 includes a solid unblocking agent conveying device control system 51, a liquid unblocking agent conveying device control system 52, an unblocking agent feeding device control system 53, an unblocking agent dosing device control system 54, and a dispensing device controller base 55, which are used to complete the conveying, feeding, and dosing of solid and liquid unblocking agents or liquid unblocking agents.

[0104] As a further implementation, the barrier plate 18 is a "star-shaped" barrier plate 18, which is made of export-grade fluororubber sheet and has properties such as acid and alkali resistance, aging resistance, and high temperature resistance up to 250 degrees Celsius. Specifically, the "star-shaped" barrier plate 18 is composed of hollow parts with a hollow spacing of 2-5 mm, which is used to prevent solid unblocking agent from falling into the dosing cylinder due to its own gravity.

[0105] As a further implementation, the feed pusher 11 pushes the material through a built-in, integrated push rod to control the amount of unblocking agent added;

[0106] The compression spring 12 has a spring wire diameter of 2-4 mm, an outer diameter of 20-60 mm, a free length of 150-400 mm, and a total number of coils of 20-80; and

[0107] The compression spring 12 works in conjunction with the feeding propulsion device 11 to complete the single addition of solid unblocking agent to the storage cylinder.

[0108] As a further implementation, the inner wall material of the storage cylinder is Hastelloy, which is resistant to acid and alkali corrosion; the storage cylinder is a cylinder with a diameter of 20-50 mm and a height of 80-120 cm, and the diameter and height of the storage cylinder are smaller than the diameter and height of the unblocking agent dosing cylinder 21.

[0109] As a preferred embodiment, the top of the storage cylinder is open, i.e., set as an open type (not sealed, set as an open type), for loading solid unblocking agent; the bottom of the storage cylinder is set as a semi-open type, for supporting the loaded solid unblocking agent.

[0110] As a further implementation, three storage cylinders are arranged around the unblocking agent feeding box 17, and six sliding tracks are correspondingly arranged. Each storage cylinder is equipped with two sliding tracks, located at the top and bottom of the storage cylinder, respectively, for the storage cylinder to smoothly enter the feeding box.

[0111] The sliding track, made of stainless steel, is connected at one end to the storage cylinder and at the other end to the unblocking agent feeding box. The sliding track is 80-120 cm long and its width is the same as the diameter of the storage cylinder, allowing the storage cylinder to slide flexibly on the track.

[0112] The included angle between adjacent sliding tracks on the same plane is 120 degrees, and the upper and lower adjacent sliding tracks are set to be parallel. The entire sliding track can rotate along the unblocking agent feeding box to complete the unblocking agent being added to the storage box through the conveying device.

[0113] Specifically, the unblocking agent feeding box consists of three straight lines, each 10-30 cm longer than the height of the storage cylinder, and made of Hastelloy alloy. Each straight line in the unblocking agent feeding box is equally spaced, with its top connected to the outer edge of the bottom of the feeding propeller and its bottom connected to the outer edge of the top of the unblocking agent dosing cylinder, used to hold the storage cylinder containing the sample.

[0114] As a further implementation, the inner diameter of the unblocking agent dosing cylinder 21 is 20-60 mm and the length is 2-4 meters, which is suitable for the dosing of unblocking agents of different diameters;

[0115] The inner wall of the unblocking agent dosing cylinder 21 is made of Hastelloy, which is resistant to acid and alkali. The overall material of the unblocking agent dosing cylinder 21 can withstand a pressure of 140 MPa, making it suitable for high-pressure and ultra-high-pressure gas wells.

[0116] As a further implementation, the balance pipe of the pressure balance system 22 is connected to the unblocking agent dosing cylinder 21 to form a rectangle; the diameter of the balance pipe is 20-50 mm and the total length is 4-8 meters;

[0117] The inner wall of the balance tube of the pressure balancing system 22 is made of Hastelloy, which is resistant to acids and alkalis.

[0118] As a further implementation, the solid unblocking agent conveyor belt 321 has a total length of 6-10 meters, a width of 20-60 centimeters, and an angle of 15-30 degrees with the ground.

[0119] As a further implementation, the liquid unblocking agent storage tank 41 is 1-3 meters long, 1-2 meters wide, and 1-2 meters high, with the inner wall material being Hastelloy, and is suitable for preparing and storing acid and alkali solutions.

[0120] As a further implementation, the solid unblocking agent delivery device control system 51 is equipped with four control buttons: a start button, a stop button, a power button, and a temporary stop button. The four control buttons are used to control the solid unblocking agent delivery system to deliver the solid unblocking agent to the corresponding storage cylinder.

[0121] The control system 52 of the liquid unblocking agent delivery device is equipped with five control buttons: power switch button, stirring switch button, drain switch button, liquid unblocking agent injection valve switch button and pump switch button. The five control buttons are used to control the preparation of liquid unblocking agent and its delivery to the corresponding storage cylinder.

[0122] The unblocking agent feeding device control system 53 is equipped with five control buttons: A storage cylinder button, B storage cylinder button, C storage cylinder button, power switch button, and feeding switch button. The five control buttons are used to control the solid unblocking agent to be added into the unblocking agent feeding tank 17 in the order of the plan.

[0123] The unblocking agent dosing device control system 54 is equipped with four control buttons: unblocking agent dosing cylinder injection valve switch button, unblocking agent dosing cylinder well inlet valve switch button, pressure balance system top control valve switch button, and pressure balance system bottom control valve switch button. The four control buttons are used to control the unblocking agent to be smoothly added into the wellbore.

[0124] Based on the above-described structure, this invention provides two examples of methods for adding chemically self-generating heat-dissolving plugging agents:

[0125] The first example, such as Figure 1 and Figure 2As shown, first connect the bottom of the unblocking agent dosing device 2 to the wellhead 23. Install the unblocking agent feeding device 1 on top of the unblocking agent dosing device 2. Install the solid unblocking agent conveying device 3 on the left side of the unblocking agent feeding device 1. Adjust the position of the solid unblocking agent conveyor belt 321 so that it is close to the storage cylinder A13 in the feeding device. Connect the power lines of the unblocking agent injection device controller 5 to the other devices. Turn on the power button of the solid unblocking agent conveying device control system 51 in the unblocking agent injection device controller 5 and the power switch button of the unblocking agent feeding device control system 53 in the injection device controller. Unpack the solid unblocking agent and place it into solid unblocking agent storage tanks A311, B312, and C313 respectively. Turn on the start button in the solid unblocking agent conveying device control system 51 to sequentially convey solid unblocking agent A into storage tank A13, solid unblocking agent B into storage tank B14, and solid unblocking agent C into storage tank C15. After conveying is complete, click the stop button. Turn on the unblocking agent dosing cylinder injection valve 211 in the unblocking agent dosing device control system and start the dosing button in the unblocking agent feeding device control system 53. Repeatedly add unblocking agent A, unblocking agent B, and unblocking agent C into the unblocking agent dosing cylinder 21 in the order of unblocking agent A, unblocking agent B, and unblocking agent C to complete the solid unblocking agent feeding operation. Close the injection valve 211 of the unblocking agent dosing device control system, and sequentially open the top control valve 221 of the pressure balance system, the bottom control valve 222 of the pressure balance system, and the well inlet valve 212 of the unblocking agent dosing device control system to smoothly add solid unblocking agent into the wellbore. After the addition is completed, close the well inlet valve 212 of the unblocking agent dosing device control system, the bottom control valve 222 of the pressure balance system, and the top control valve switch 221 of the pressure balance system to complete the addition of solid unblocking agent A / B / C.

[0126] The second example, such as Figure 1 and Figure 2As shown, first connect the bottom of the unblocking agent dosing device 2 to the wellhead 23, install the unblocking agent feeding device 1 on the upper part of the unblocking agent dosing device 2, install the liquid unblocking agent delivery device 4 on the left side of the unblocking agent feeding device 1, and connect the liquid delivery line 43 to the liquid unblocking agent injection valve 19 on the left side of the storage cylinder B14. Connect the power lines of the unblocking agent dosing device controller 5 and other devices, and turn on the power button of the liquid unblocking agent delivery device control system 52 in the unblocking agent dosing device controller 5 and the power switch button of the unblocking agent feeding device control system 53 in the dosing device controller. The unblocking agent is added to the liquid unblocking agent storage tank 41 through the solid unblocking agent injection port 412, and an appropriate amount of water is added through the water injection port 411. The stirring switch of the liquid unblocking agent delivery device control system 52 is turned on to fully dissolve the unblocking agent. The storage cylinder B button in the unblocking agent feeding device control system 53 is activated, and the storage cylinder B14 is sent into the feeding box 17 through the sliding rail 16. The unblocking agent dosing cylinder injection valve 211 in the unblocking agent dosing device control system is opened, the liquid unblocking agent injection valve 19 in the unblocking agent feeding device is opened, and the pump switch is turned on. The liquid unblocking agent is delivered through the delivery pipeline 43 to the storage tank 41. The feed cylinder B14 is fed into the unblocking agent dosing cylinder 21. The unblocking agent dosing cylinder injection valve 211 in the unblocking agent dosing device control system is closed. The pressure balance system top control valve 221, pressure balance system bottom control valve 222, and unblocking agent dosing cylinder inlet valve 212 in the unblocking agent dosing device control system are opened in sequence to smoothly add liquid unblocking agent into the wellbore. After the addition is completed, the unblocking agent dosing cylinder inlet valve 212, pressure balance system bottom control valve 222, and pressure balance system top control valve switch 221 in the unblocking agent dosing device control system are closed to complete the liquid unblocking agent injection.

[0127] This invention's device enables the simultaneous mixing and injection of multiple solid chemical self-generating thermal deblocking agents. During injection, it can balance the pressure at the wellhead, ensuring smooth completion of the injection process. This device is characterized by convenient operation, rapid injection, and no safety hazards associated with working at heights. It significantly reduces on-site personnel requirements, improves the efficiency of deblocking agent injection, and makes the deblocking agent injection process more intelligent, providing strong support for the successful removal of natural gas hydrate blockages.

[0128] Example 2

[0129] The difference between this embodiment and Embodiment 1 is that this embodiment provides a method for on-site application of a chemically self-generating thermal deblocking agent, which includes the following steps:

[0130] S1: Install and connect the aforementioned on-site dispensing device for chemically self-generating heat-dissolving plugging agent, and energize it;

[0131] S2: Based on the start or stop of each control button in the solid unblocking agent conveying device control system 51, the liquid unblocking agent conveying device control system 52, and the unblocking agent feeding device control system 53, the solid unblocking agent and / or liquid unblocking agent are put into the unblocking agent dosing cylinder of the unblocking agent dosing device 2 in the order of the design scheme.

[0132] S3: Based on the activation or deactivation of each control button in the unblocking agent dosing device control system 54, during injection, the pressure at the wellhead can be balanced to complete the dosing of solid unblocking agent and / or liquid unblocking agent into the wellbore.

[0133] The specific implementation steps are as follows:

[0134] 1) Connect the bottom of the unblocking agent dosing device 2 to the wellhead;

[0135] 2) Install the unblocking agent feeding device 1 on the upper part of the unblocking agent dosing device 2;

[0136] 3) Based on the actual needs on site, install the solid unblocking agent conveying device 3 on one side (e.g., the left side) of the unblocking agent feeding device 1;

[0137] 4) Adjust the position of the solid unblocking agent conveyor belt 321 so that it is close to the storage cylinder in the unblocking agent feeding device 1, so that the unblocking agent can be smoothly added to the corresponding storage cylinder;

[0138] 5) Based on the actual needs on site, install the liquid unblocking agent delivery device 4 on one side (e.g., the left side) of the unblocking agent feeding device 1, and connect the liquid delivery line to the liquid unblocking agent injection valve on the left side of the storage cylinder B;

[0139] 6) Connect the power cords of the filling device controller 5 to the power cords of other devices;

[0140] 7) Turn on the power button of the solid unblocking agent delivery device control system in the dispensing device controller 5;

[0141] 8) Turn on the power switch button of the liquid unblocking agent delivery device control system in the dispensing device controller 5;

[0142] 9) Turn on the power switch button of the unblocking agent feeding device control system in the dosing device controller 5;

[0143] 10) If solid unblocking agent is to be added, first remove the packaging of the solid unblocking agent and place it in the corresponding storage box according to its category;

[0144] 11) Turn on the start button in the control system of the solid unblocking agent delivery device to deliver the solid unblocking agent to the corresponding storage cylinder (such as storage cylinder A). After the filling is completed, click the close button.

[0145] 12) If liquid unblocking agent is to be added, first add the unblocking agent to the liquid unblocking agent storage tank through the solid unblocking agent injection port, and then add an appropriate amount of water through the water injection port;

[0146] 13) Turn on the stirring switch of the liquid unblocking agent delivery device control system to fully dissolve the unblocking agent;

[0147] 14) Start the corresponding storage cylinder (e.g., storage cylinder A) button in the control system of the unblocking agent feeding device, and send the corresponding storage cylinder (e.g., storage cylinder A) into the unblocking agent feeding box through the sliding rail;

[0148] 15) Following the above process, add two or three solid unblocking agents into the dosing cylinder in sequence according to the design scheme;

[0149] 16) Open the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, and start the feeding button of the unblocking agent feeding device control system to complete the feeding of solid unblocking agent;

[0150] 17) Close the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, and sequentially open the top control valve of the pressure balance system, the bottom control valve of the pressure balance system, and the well inlet valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device to smoothly add solid unblocking agent into the wellbore;

[0151] 18) When adding liquid unblocking agent, first activate the corresponding storage cylinder (e.g., storage cylinder B) button in the control system of the unblocking agent feeding device, and send the corresponding storage cylinder (storage cylinder B) into the feeding box through the sliding rail;

[0152] 19) Open the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, open the liquid unblocking agent injection valve in the unblocking agent feeding device, start the pump switch, and transport the liquid unblocking agent through the corresponding storage cylinder (storage cylinder B) to the unblocking agent dosing cylinder through the liquid delivery pipeline;

[0153] 20) Close the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, and sequentially open the top control valve of the pressure balance system, the bottom control valve of the pressure balance system, and the well inlet valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device to smoothly add the liquid unblocking agent into the wellbore;

[0154] 21) After the addition is completed, close the wellbore inlet valve of the unblocking agent dosing tube, the bottom control valve of the pressure balance system, and the top control valve of the pressure balance system in the control system of the unblocking agent dosing device.

[0155] All of the above-mentioned optional technical solutions can be combined in any way to form optional embodiments of this disclosure, and will not be described in detail here.

[0156] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for on-site application of chemically self-generating pyrolytic deblocking agents, characterized in that, The device includes: The unblocking agent feeding device (1) is used to complete the storage of solid unblocking agents and / or liquid unblocking agents before they are added; The top of the unblocking agent dosing device (2) is connected to the bottom of the unblocking agent feeding device (1), and the bottom of the unblocking agent dosing device (2) is connected to the wellhead. It is used to balance the pressure in the wellbore when the unblocking agent is added, so as to ensure that the unblocking agent is added into the wellbore. A solid unblocking agent conveying device (3) is used to convey one or more solid unblocking agents to the unblocking agent feeding device (1); A liquid unblocking agent delivery device (4) is used to prepare and deliver one or more liquid unblocking agents on-site to the unblocking agent feeding device (1); The filling device controller (5) is connected to the unblocking agent feeding device (1), the unblocking agent dosing device (2), the solid unblocking agent conveying device (3), and the liquid unblocking agent conveying device (4), and is used to control the solid unblocking agent conveying, liquid unblocking agent conveying, unblocking agent feeding and unblocking agent dosing; This device is suitable for on-site addition of solid and / or liquid unblocking agents, enabling the sequential cyclic addition of various unblocking agents in the required order; The unblocking agent feeding device (1) includes a feeding pusher (11), a compression spring (12), an unblocking agent feeding box (17), and a barrier rubber plate (18) from top to bottom. Several storage cylinders are arranged around the unblocking agent feeding box (17). The storage cylinders are used for temporary storage of solid unblocking agent and liquid unblocking agent before injection. Each storage cylinder is connected to the unblocking agent feeding box (17) through two upper and lower sliding rails (16). A liquid unblocking agent injection valve (19) is provided on the side of the storage cylinder. The liquid unblocking agent is injected into the unblocking agent feeding box (17) by opening the liquid unblocking agent injection valve (19). By pressing the feed pusher (11), the compression spring (12) is compressed, thereby feeding the solid unblocking agent and / or liquid unblocking agent in the unblocking agent feed box (17) into the dosing cylinder through the barrier rubber plate (18); The unblocking agent feeding box (17) consists of three straight lines. The distance between each straight line in the unblocking agent feeding box (17) is equal. The top of the line is connected to the outer edge of the bottom of the feeding pusher, and the bottom is connected to the outer edge of the top of the unblocking agent dosing cylinder. It is used to place the storage cylinder containing the sample.

2. The on-site dispensing device for chemically self-generating pyrolytic deblocking agents according to claim 1, characterized in that, The feeding pusher (11) pushes the unblocking agent through a built-in, integrated push rod to control the amount of unblocking agent added. The compression spring (12) has a spring wire diameter of 2-4 mm, an outer diameter of 20-60 mm, a free length of 150-400 mm, and a total number of coils of 20-80; and The compression spring (12) works in conjunction with the feeding propeller (11) to complete the single addition of solid unblocking agent to the storage cylinder.

3. The on-site dispensing device for chemically self-generating pyrolytic deblocking agents according to claim 1, characterized in that, The inner wall of the storage cylinder is made of Hastelloy alloy; the storage cylinder is cylindrical, and its diameter and height are smaller than those of the unblocking agent dosing cylinder. The top of the storage cylinder is open, i.e., set as an open type, for loading solid unblocking agent; the bottom of the storage cylinder is set as a semi-open type, for supporting the loaded solid unblocking agent.

4. The on-site dispensing device for chemically self-generating pyrolytic deblocking agents according to claim 1, characterized in that, The unblocking agent dosing device (2) includes an unblocking agent dosing cylinder (21), a pressure balancing system (22), and a wellhead (23). The unblocking agent dosing cylinder (21) is connected to the bottom of the unblocking agent feeding device (1); The top of the unblocking agent dosing cylinder (21) is provided with an unblocking agent dosing cylinder injection valve (211), and the bottom of the unblocking agent dosing cylinder (21) is provided with an unblocking agent dosing cylinder inlet valve (212). By opening the unblocking agent dosing cylinder inlet valve (212), the unblocking agent can be smoothly added into the wellbore through the wellhead (23). The pressure balancing system (22) is connected to the unblocking agent dosing cylinder (21). The pressure balancing system (22) is equipped with a pressure balancing system top control valve (221) and a pressure balancing system bottom control valve (222). The pressure balancing system top control valve (221) is located at the top of the unblocking agent dosing cylinder (21), and the pressure balancing system bottom control valve (222) is located at the bottom of the unblocking agent dosing cylinder (21). When the unblocking agent is added, the pressure inside the wellbore is effectively balanced by opening the pressure balancing system top control valve (221) and the pressure balancing system bottom control valve (222), so that the unblocking agent can be smoothly injected into the wellbore.

5. The on-site dispensing device for chemically self-generating pyrolytic deblocking agents according to claim 4, characterized in that, The unblocking agent dosing cylinder (21) is suitable for adding unblocking agents of different diameters; The inner wall of the unblocking agent dosing cylinder (21) is made of Hastelloy alloy, and the overall material of the unblocking agent dosing cylinder (21) has a pressure resistance of 140 MPa, which is suitable for high pressure and ultra-high pressure gas wells.

6. The on-site dispensing device for chemically self-generating pyrolytic deblocking agents according to claim 4, characterized in that, The balance pipe of the pressure balance system (22) is connected to the unblocking agent dosing cylinder (21) to form a rectangle; The inner wall of the balance tube of the pressure balancing system (22) is made of Hastelloy alloy.

7. The on-site dispensing device for chemically self-generating pyrolytic plugging agent according to claim 1, characterized in that, The solid unblocking agent delivery device (3) includes a solid unblocking agent storage tank (31) and a solid unblocking agent delivery system (32). The solid unblocking agent storage tank (31) includes several solid unblocking agent storage tanks for storing several kinds of solid unblocking agents; The solid unblocking agent conveying system (32) includes a solid unblocking agent conveyor belt (321), a solid unblocking agent conveyor belt support (322), and a solid unblocking agent conveyor belt base (323). The solid unblocking agent is fed into the corresponding storage cylinder through the solid unblocking agent conveyor belt (321), and the solid unblocking agent is conveyed through the solid unblocking agent conveying device (3).

8. The on-site dispensing device for chemically self-generating pyrolytic plugging agent according to claim 1, characterized in that, The liquid unblocking agent delivery device (4) includes a liquid unblocking agent storage tank (41), a high-pressure pump (42), and a delivery pipeline (43). The top of the liquid unblocking agent storage tank (41) is provided with a storage tank water inlet (411) and a solid unblocking agent injection port (412). The storage tank water inlet (411) is used to inject the corresponding solvent when preparing the liquid; the solid unblocking agent injection port (412) is used to inject the powdered solid unblocking agent. The liquid unblocking agent storage tank (41) is equipped with a storage tank drain valve (414) on the lower left side, which is used to drain residual liquid unblocking agent; the liquid unblocking agent storage tank (41) is equipped with a liquid level observation window (413) on the upper right side, which is used to observe the liquid level in the liquid unblocking agent storage tank (41) so as to stop the injection and replenish it in time; the liquid unblocking agent storage tank (41) is equipped with a storage tank stirrer (415) inside, which is used to complete the stirring work when preparing the liquid, so that the solid unblocking agent dissolves more evenly; After the unblocking agent and solvent are added through the solid unblocking agent injection port (412) and the storage tank water inlet (411), the storage tank stirrer (415) is turned on to continuously stir and make it fully dissolved. The liquid unblocking agent is transported to the corresponding storage tank through the high pressure pump (42) and the liquid delivery line (43). The remaining unblocking agent is discharged through the storage tank drain valve (414).

9. The on-site dispensing device for chemically self-generating pyrolytic plugging agent according to claim 1, characterized in that, The dispensing device controller (5) includes a solid unblocking agent delivery device control system (51), a liquid unblocking agent delivery device control system (52), an unblocking agent feeding device control system (53), and an unblocking agent dosing device control system (54). The solid unblocking agent conveying device control system (51) is equipped with a start button, a stop button, a power button and a temporary stop button, which are used to control the solid unblocking agent conveying system to convey the solid unblocking agent to the corresponding storage cylinder; The control system (52) for the liquid unblocking agent delivery device is equipped with a power switch button, a stirring switch button, a drain switch button, a liquid unblocking agent injection valve switch button and a pump switch button, which are used to control the preparation of liquid unblocking agent and its delivery to the corresponding storage cylinder; The unblocking agent feeding device control system (53) is equipped with A storage cylinder button, B storage cylinder button, C storage cylinder button, power switch button and feeding switch button, which are used to control the solid unblocking agent to be added to the unblocking agent feeding tank in the order of the scheme; The unblocking agent dosing device control system (54) is equipped with an unblocking agent dosing cylinder injection valve switch button, an unblocking agent dosing cylinder well inlet valve switch button, a pressure balance system top control valve switch button, and a pressure balance system bottom control valve switch button, which are used to control the unblocking agent to be smoothly added into the wellbore.

10. A method of using the on-site application device for a chemically self-generating pyrolytic deblocking agent according to any one of claims 1-9, the method comprising the following steps: S1: Install and connect the aforementioned on-site dispensing device for chemically self-generating heat-dissolving plugging agent, and energize it; S2: Based on the start or stop of each control button in the solid unblocking agent delivery device control system, liquid unblocking agent delivery device control system, and unblocking agent feeding device control system, the solid unblocking agent and / or liquid unblocking agent are put into the unblocking agent dosing cylinder of the unblocking agent dosing device according to the design scheme sequence; S3: Based on the activation or deactivation of each control button in the unblocking agent dosing device control system, during injection, it can balance the pressure at the wellhead and complete the dosing of solid and / or liquid unblocking agents into the wellbore.

11. The method of use according to claim 10, characterized in that, Step S1 includes the following sub-steps: 1) Connect the bottom of the unblocking agent dosing device to the wellhead; 2) Install the unblocking agent feeding device on top of the unblocking agent dosing device; 3) Based on the actual needs on site, install the solid unblocking agent conveying device on one side of the unblocking agent feeding device; 4) Adjust the position of the solid unblocking agent conveyor belt so that it is close to the storage cylinder in the unblocking agent feeding device, so that the unblocking agent is added to the corresponding storage cylinder; 5) Based on the actual needs on site, install the liquid unblocking agent delivery device on one side of the unblocking agent feeding device, and connect the delivery pipeline to the liquid unblocking agent injection valve in the storage tank; 6) Connect the power cords of the filling device controller to the power cords of other devices; 7) Turn on the power button of the solid unblocking agent delivery device control system in the dosing device controller; 8) Turn on the power switch button of the liquid unblocking agent delivery device control system in the dosing device controller; 9) Turn on the power switch button of the unblocking agent feeding device control system in the dosing device controller.

12. The method of use according to claim 10, characterized in that, Step S2 includes the following sub-steps: If a solid unblocking agent is to be added, then: 1) First, remove the solid unblocking agent from its packaging and place it in the corresponding storage bin according to its category; 2) Turn on the start button in the control system of the solid unblocking agent delivery device to deliver the solid unblocking agent to the corresponding storage cylinder. After the filling is completed, click the stop button. 3) Start the corresponding storage cylinder button in the control system of the unblocking agent feeding device, and send the corresponding storage cylinder into the unblocking agent feeding box through the sliding rail; 4) Following the above process, add two or three solid unblocking agents into the dosing cylinder in sequence according to the design scheme; If liquid unblocking agent is to be added, then: 1) First, add the unblocking agent to the liquid unblocking agent storage tank through the solid unblocking agent injection port, and then add water through the water injection port; 2) Turn on the stirring switch of the liquid unblocking agent delivery device control system to fully dissolve the unblocking agent; 3) Start the corresponding storage cylinder button in the control system of the unblocking agent feeding device, and send the corresponding storage cylinder into the unblocking agent feeding box through the sliding rail.

13. The method of use according to claim 10, characterized in that, Step S3 includes the following sub-steps: If a solid unblocking agent is to be added, then: 1) Open the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, and start the feeding button of the unblocking agent feeding device control system to complete the feeding of solid unblocking agent; 2) Close the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, and sequentially open the top control valve of the pressure balance system, the bottom control valve of the pressure balance system, and the well inlet valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device to smoothly add solid unblocking agent into the wellbore; 3) Close the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, and sequentially open the top control valve of the pressure balance system, the bottom control valve of the pressure balance system, and the well inlet valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device to smoothly add solid unblocking agent into the wellbore; 4) After the addition is completed, close the well inlet valve of the unblocking agent dosing cylinder, the bottom control valve of the pressure balance system, and the top control valve of the pressure balance system in the control system of the unblocking agent dosing device; If liquid unblocking agent is to be added, then: 1) When adding liquid unblocking agent, first start the corresponding storage cylinder button in the control system of the unblocking agent feeding device, and send the corresponding storage cylinder into the feeding box through the sliding rail; 2) Open the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, open the liquid unblocking agent injection valve in the unblocking agent feeding device, start the pump switch, and transport the liquid unblocking agent through the corresponding storage cylinder to the unblocking agent dosing cylinder through the liquid delivery pipeline; 3) Close the injection valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device, and sequentially open the top control valve of the pressure balance system, the bottom control valve of the pressure balance system, and the well inlet valve of the unblocking agent dosing cylinder in the control system of the unblocking agent dosing device to smoothly add the liquid unblocking agent into the wellbore; 4) After the addition is completed, close the wellbore inlet valve of the unblocking agent dosing tube, the bottom control valve of the pressure balance system, and the top control valve of the pressure balance system in the control system of the unblocking agent dosing device.

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