In-hole turbidity purification treatment equipment and process

Abstract

The invention belongs to the technical field of geological exploration, and particularly relates to in-hole turbidity purification treatment equipment and process. The device is reasonable in design and comprises a polyethylene film, a fishing female connector, a nylon cable tie, a fishing male connector, a diving bin, a sealing pressing rod, an airtight valve element, a sealing spring, a sealing pressing plate, a limiting screw, an end cover, a bearing plate and a fishing rope, the diving bin and internal elements drive the polyethylene film to enter a hole, and a drill hole is divided into two parts; turbid liquid is purified inside and outside the system through a chemical reagent, the outside of the system is difficult to enter the inside of the system under the action of pressure difference, the problem of turbid liquid in holes can be fundamentally solved, the turbid liquid and the chemical reagent simultaneously rise inside the system under the action of pressure difference, the purification efficiency is improved, and the time cost is saved; the construction efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of geological exploration, and in particular relates to an in-hole turbidity purification treatment device and process. Background Art

[0002] In-hole video imaging technology plays an important role in monitoring in-hole conditions, preserving raw in-hole formation data, reducing operational risks, and conducting geological and rock mechanics analysis, especially in geological exploration. However, in turbid boreholes, imaging is difficult, significantly complicating drilling operations and increasing project costs.

[0003] Currently, there are three common methods for treating turbidity in boreholes. The first is well washing, which involves repeatedly replacing the turbid liquid in the borehole with clean water until the hole is clear. The second is chemical flocculation and precipitation, which uses chemical reagents (such as alum, polyacrylamide, potassium chloride, and other flocculants) to flocculate and precipitate suspended particles in the borehole, improving hole clarity. The third is the circulation of solid-free drilling fluid. Solid-free drilling fluid has excellent ability to carry and suspend cuttings and can form a dense adsorption film on the wellbore wall, providing a certain wall protection ability, reducing the shedding of dust particles from the borehole wall, and improving hole clarity by reducing the concentration of turbid particles.

[0004] The above methods are effective when the conditions in the hole are simple. However, when the conditions are complex, such as broken strata, muddy interlayers in fractures, turbid groundwater, and easy falling of soil particles in fractures, it is difficult to effectively purify the turbid liquid in the hole. When washing the well with clean water, as the clean water is continuously flushed, the sand, gravel, clay, turbid underground water and other substances in the hole will continuously break away from the hole wall and enter the hole. The chemical flocculation precipitation method and the solid-free drilling fluid circulation method are also unable to prevent the turbidity sources in the hole, such as muddy sand in fractures, clay and turbid underground water, from entering the hole. These turbidity sources in the hole will destroy the purification balance after entering the hole, making it impossible to play an effective purification role. In addition, washing the well with clean water will increase the construction water consumption, making construction difficult in water-scarce areas. The purification time of the chemical flocculation precipitation method is long, which prolongs the construction period and reduces the construction efficiency. The construction cost of the solid-free drilling fluid circulation method is high.

[0005] Therefore, there is a need for a turbidity purification equipment and process with high efficiency, high speed, low cost and the ability to solve the problem from the root cause of the turbidity in the hole. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above-mentioned problems existing in the traditional technology and provide an in-hole turbidity purification treatment device and process.

[0007] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0008] The present invention provides an in-hole turbidity purification treatment device, comprising a polyethylene film, a salvage female joint, a nylon cable tie, a salvage male joint, a submersible chamber, a sealing pressure rod, an airtight valve core, a sealing spring, a sealing pressure plate, a limit screw, an end cover, a pressure plate, and a salvage rope; the salvage female joint can be docked with the salvage male joint, a salvage rope is installed on the salvage female joint, the polyethylene film is fixed to the submersible chamber through a nylon cable tie, the salvage male joint is fixedly connected to the submersible chamber, and the submersible chamber, the sealing pressure rod, the airtight valve core, the sealing spring, the sealing pressure plate, the limit screw, the end cover, and the pressure plate cooperate with each other to form a sealing mechanism.

[0009] Furthermore, in the above-mentioned in-hole turbidity purification treatment equipment, the diameter of the polyethylene film is consistent with the aperture of the borehole, the length is slightly greater than the depth of the borehole, and the thickness is 4 to 10 threads; the transparency of the polyethylene film is required to be no less than 70%, the density is 0.941 to 0.965 g / cm3, and the tensile strength is 20 to 35 MPa; the remaining length of the polyethylene film above the borehole mouth is recorded as the upper residual length, and the upper residual length is determined according to the groundwater pressure. The greater the groundwater pressure, the longer the upper residual length. The upper residual length can provide head pressure for the liquid in the polyethylene film in the hole, form a pressure difference with the turbid liquid between the polyethylene film and the hole wall, squeeze the turbid liquid into the formation cracks, and ensure that the polyethylene film is completely in contact with the hole wall.

[0010] Furthermore, in the above-mentioned in-hole turbidity purification treatment equipment, the salvage female joint includes a main half mold, a secondary half mold, a spring, a wedge block, a turbid liquid discharge channel, a threaded hole, a salvage rope connecting frame, a salvage rope connecting hole and a concave cavity; the main half mold and the secondary half mold are fixedly connected by the threaded hole to facilitate assembly and disassembly; the spring and the wedge block cooperate to adjust the diameter formed between the two wedge blocks to facilitate salvage operations; during salvage, the turbid liquid discharge channel provides a flow channel for the purified liquid in the system, reducing the resistance to lowering the salvage female joint; the salvage rope connecting frame is provided with a salvage rope connecting hole for connecting the salvage rope; under the action of their own weight, the salvage female joint and the salvage male joint are docked, and the concave cavity mainly serves as a guide to enable the salvage male joint to enter the concave cavity smoothly. At this time, the wedge shape of the wedge block cooperates with the salvage cone head. At this time, when the wedge block enters the limiting annular groove, the spring drives the wedge block to pop out, clamping the salvage male joint, and performing the salvage operation.

[0011] Furthermore, in the above-mentioned in-hole turbidity purification treatment equipment, the salvage male connector includes a salvage conical head, a limiting annular groove and a connecting rib. The salvage conical head and the limiting annular groove cooperate with the spring and the wedge block to achieve a blocking fit between the salvage male connector and the salvage female connector. The connecting ribs form a circulation space for the circulation of fluid in the system.

[0012] Furthermore, in the above-mentioned turbidity purification treatment equipment in the hole, the submersible tank is the main body of the system, providing counterweight for the system, and the diameter of the submersible tank is slightly smaller than the hole diameter; the submersible tank includes a polyethylene film fixing ring groove, a chemical reagent storage tank, a sealing pit, a compressed gas sealing pit, a compressed gas storage tank, a separation channel, a gas injection channel, an airtight valve core fixing threaded hole, a liquid flow channel, a sealing spring limiting blind hole and a bottom cavity. The cooperation of the polyethylene film fixing ring groove and the nylon cable tie can improve the connection strength between the polyethylene film and the submersible tank. The chemical reagent storage tank is used to store alum, polyacrylamide or potassium chloride chemical reagents, and the chemical reagents are used to purify turbid liquids in the hole; the sealing pit and the compressed gas sealing pit cooperate with the sealing pressure rod to realize the chemical reagent storage tank, the sealed compressed gas storage tank, and the sealed compressed gas storage tank to store compressed air ; After the compressed gas is released, a density difference and a pressure difference are formed between the inside and outside of the system, which facilitates the turbid liquid outside the system to enter the system. The separation channel is arranged in the compressed gas storage bin to separate the compressed gas and the sealing pressure rod. The inner diameter of the separation channel is larger than the outer diameter of the sealing pressure rod, providing a channel for the turbid liquid outside the system to enter the system. The size of the annular gap between the separation channel and the sealing pressure rod is used to control the flow rate of the turbid liquid outside the system into the system. The gas injection channel is used to inject compressed gas into the compressed gas storage bin. The airtight valve core fixing threaded hole is fixedly connected to the airtight valve core to close the compressed gas storage bin. The liquid flow channel provides a flow channel for the turbid liquid outside the system to enter the system. The sealing spring limiting blind hole is used to fix the sealing spring. The bottom cavity provides space for the sealing control element and a fixed end cover.

[0013] Furthermore, in the above-mentioned in-hole turbidity purification treatment equipment, the sealing pressure rod is used to seal the chemical reagent storage bin and the compressed gas storage bin, and the sealing pressure rod includes a sealing block connector, a compressed gas sealing block, a liquid sealing block, a connecting rod, a limiting boss and a thread, and the sealing block connector is used to connect the compressed gas sealing block and the liquid sealing block into a whole, thereby playing a role of simultaneous sealing; the compressed gas sealing block cooperates with the compressed gas sealing pit to achieve sealing of the compressed gas storage bin; the liquid sealing block cooperates with the sealing pit to achieve sealing of the outside and inside of the system; the connecting rod realizes long-distance control of the above-mentioned sealing action; the limiting boss and the thread realize limiting the position of the sealing pressure plate by cooperating with the limiting screw.

[0014] Furthermore, in the above-mentioned in-hole turbidity purification treatment equipment, the sealing pressure plate achieves sealing by cooperating with the sealing spring, the limiting screw and the sealing pressure rod. The sealing pressure plate includes a sealing spring fixing blind hole and a sealing pressure rod limiting through hole. The sealing spring fixing blind hole is used to fix the sealing spring, and the sealing pressure rod limiting through hole is used to pass through the sealing pressure rod. The inner diameter of the sealing pressure rod limiting through hole is smaller than the inner diameter of the limiting boss and larger than the outer diameter of the thread.

[0015] Furthermore, in the above-mentioned in-hole turbidity purification treatment equipment, the end cover is connected to the bottom cavity of the submerged chamber, and is used to block large pieces of rock debris at the bottom of the hole from entering the bottom cavity, thereby preventing it from affecting the sealing effect of the sealing element; the end cover includes a liquid flow through hole, an external thread and a pressure plate limiting boss, the liquid flow through hole is used for the circulation of liquid inside and outside the system, the external thread is used for fixed connection with the bottom cavity, and the pressure plate limiting boss is used to limit the position of the pressure plate to prevent the pressure plate from completely sealing the liquid flow through hole due to the excessive weight of the submerged chamber, making it difficult for liquid inside and outside the system to circulate.

[0016] Furthermore, in the above-mentioned in-hole turbidity purification treatment equipment, in the sealing mechanism, the sealing pressure rod is fixedly connected to the sealing pressure plate by a thread, a limiting boss and a limiting screw, the sealing pressure plate is fixedly connected to the sealing spring, and the pressure plate is fixedly connected to the sealing pressure rod; in the initial stage, under the action of the sealing spring, the sealing pressure plate drives the sealing pressure rod to seal the compressed gas sealing pit and the sealing pit on the diving chamber, so that the turbid liquid outside the system cannot enter the system, and the compressed air in the compressed air storage chamber is difficult to release. When the system reaches the bottom of the hole, under the action of the system's own weight, the diving chamber continues to move downward, the sealing spring is compressed, the pressure plate and the sealing pressure rod move upward relatively, the sealing of the compressed gas sealing pit and the sealing pit fails, and the compressed air is released. At this time, the turbid liquid outside the system enters the system under the action of the pressure difference and mixes with the chemical reagent.

[0017] The present invention also provides a process for purifying turbidity in a hole, which is implemented based on the above-mentioned turbidity purification equipment in a hole, and includes the following steps:

[0018] S1. The diving chamber and its internal components drive the polyethylene film down the borehole. Under the pressure of the turbid liquid in the hole, the air in the polyethylene film is basically expelled, and the shape of the polyethylene film is compressed into the set shape. At this time, the liquid flow channel and the compressed gas sealing pit are both sealed by the sealing pressure rod;

[0019] S2. When the turbidity purification equipment in the hole reaches the bottom of the hole, the compressed gas sealing pit and the seal of the sealing pit fail, the compressed air is released, and the high-pressure gas rises rapidly in the polyethylene film, forming a negative pressure inside the system and a pressure difference between the inside and outside of the system. Under the action of the pressure difference, the turbid liquid outside the system enters the system and mixes with the chemical reagents and gas. The mixture rises along the path formed by the high-pressure gas in the polyethylene film. Finally, the mixture in the polyethylene film reaches a state of equilibrium with the pressure outside the system. At this time, the mixture inside the system is in a purified state with high transparency.

[0020] S3. After the pressure of the mixture inside the system and the turbid liquid outside the system is balanced, the polyethylene film will not completely adhere to the hole wall due to pressure balance. At this time, clean water is injected into the polyethylene film to ensure that the mixture inside the polyethylene film has high transparency. Because the upper excess length of the polyethylene film is higher than the hole mouth, under the action of the high head pressure difference, the turbid liquid outside the system will be squeezed into the cracks on the hole wall. Maintain sufficient pressure difference until the turbid liquid outside the system completely enters the cracks on the hole wall. After the polyethylene film adheres to the hole wall, imaging observation is carried out. After the observation is completed, the salvage female joint is lowered to lift the submersible chamber component out of the borehole.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention uses polyethylene film to isolate the inside and outside of the system. When the polyethylene film is saturated, it is difficult for turbid liquid outside the system to enter the system, ensuring the transparency of the mixed liquid inside the system and creating favorable conditions for in-hole television imaging.

[0023] 2. The present invention uses compressed air in the submersible chamber to create a pressure difference, so that the turbid liquid outside the system enters the system from the bottom of the submersible chamber, and at the same time is fully mixed with the chemical reagents. Compared with the traditional orifice injection of chemical reagents, the reaction rate is faster, the purification efficiency of the turbid liquid is improved, and time and cost are saved.

[0024] 3. The present invention utilizes the excess height of the polyethylene film to create a pressure difference, which can squeeze the turbid liquid outside the system into the formation cracks, thereby improving the fit between the polyethylene film and the hole wall and improving the clarity inside the hole.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic cross-sectional view of the present invention as a whole;

[0028] Figure 2 It is a structural schematic diagram of the salvage female joint in the present invention;

[0029] Figure 3 It is a structural schematic diagram of the salvage male connector in the present invention;

[0030] Figure 4 Schematic cross-section of the submersible compartment in the present invention;

[0031] Figure 5 Schematic diagram of the structure of the sealing pressure rod in the present invention;

[0032] Figure 6 Schematic diagram of the structure of the sealing pressure plate in the present invention;

[0033] Figure 7 Schematic diagram of the structure of the end cover in the present invention;

[0034] Figure 8 Schematic diagram of the sealing mechanism of the present invention;

[0035] Figure 9 This is a schematic diagram of the sealing mechanism in the present invention in use;

[0036] Figure 10 It is a schematic diagram of the working principle of the device of the present invention;

[0037] Figure 11 It is a schematic diagram of the working principle of the device of the present invention;

[0038] Figure 12 Schematic diagram of the working principle of the device of the present invention. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] like Figures 1-12 As shown, this embodiment provides an in-hole turbidity purification treatment equipment, including a polyethylene film 1, a salvage female connector 2, a nylon tie 3, a salvage male connector 4, a diving chamber 5, a sealing pressure rod 6, an airtight valve core 7, a sealing spring 8, a sealing pressure plate 9, a limit screw 10, an end cover 11, a pressure plate 12, and a salvage rope 13.

[0041] In this embodiment, the polyethylene film 1 is fixed to the submersible chamber 5 by a nylon tie 3. The diameter of the polyethylene film 1 is consistent with the diameter of the drilled hole, and the length is slightly greater than the depth of the drilled hole. The thickness is between 4 and 10 threads. Too thin will affect the strength of the polyethylene film 1 and easily be scratched by the hole wall. Too thick will affect the transparency of the polyethylene film 1, reduce the clarity of the television imaging in the hole, and be detrimental to the observation of the rock joints on the hole wall. The transparency requirement is not less than 70%, and the density is 0.941-0.965g / cm 3 , tensile strength 20 ~ 35MPa, the specific residual length above the orifice (referred to as "upper residual length") is determined according to the groundwater pressure. The greater the groundwater pressure, the longer the upper residual length. The upper residual length can provide head pressure for the liquid in the polyethylene film 1 in the hole, forming a pressure difference with the turbid liquid between the polyethylene film 1 and the hole wall, squeezing the turbid liquid into the formation cracks, and ensuring that the polyethylene film 1 is completely in contact with the hole wall.

[0042] In this embodiment, the salvage female connector 2 includes a main half mold 201, a sub-half mold 202, a spring 203, a wedge block 204, a turbid liquid discharge channel 205, a threaded hole 206, a salvage rope connecting frame 207, a salvage rope connecting hole 208, and a concave cavity 209. The main half mold 201 and the sub-half mold 202 are fixedly connected by the threaded hole 206, which is convenient for assembly and disassembly. The diameter formed between the two wedge blocks can be adjusted by the cooperation of the spring 203 and the wedge block 204, which is convenient for salvage operations. When salvaging, the turbid liquid discharge channel 205 provides a flow passage for the purified liquid in the system. The salvage rope connecting frame 207 is provided with a salvage rope connecting hole 208 for connecting the salvage rope 13. Under the action of its own weight, the salvage female joint 2 is docked with the salvage male joint 4. The concave cavity 209 mainly plays a guiding role, allowing the salvage male joint 4 to smoothly enter the concave cavity 209. At this time, the wedge shape of the wedge block 204 cooperates with the salvage cone head 401 to compress the spring 203. When the wedge block 204 enters the limiting annular groove 402, the spring 203 drives the wedge block 204 to pop out, clamping the salvage male joint 4, and performing the salvage operation.

[0043] In this embodiment, the salvage male connector 4 is fixedly connected to the submersible chamber 5 and includes a salvage conical head 401, a limiting annular groove 402, and a connecting rib 403. The salvage conical head 401 and the limiting annular groove 402 cooperate with the spring 203 and the wedge block 204 to achieve a blocking fit between the salvage male connector 4 and the salvage female connector 2. The space formed between the connecting ribs 403 is used for fluid circulation in the system.

[0044] In this embodiment, the submersible chamber 5 is the main body of the system, providing counterweight for the system, and has a diameter slightly smaller than the aperture, including a polyethylene film fixing ring groove 501, a chemical reagent storage chamber 502, a sealing pit 503, a compressed gas sealing pit 504, a compressed gas storage chamber 505, a separation channel 506, a gas injection channel 507, an airtight valve core fixing threaded hole 508, a liquid flow channel 509, a sealing spring limiting blind hole 510, and a bottom cavity 511. The cooperation between the polyethylene film fixing ring groove 501 and the nylon cable tie 3 can improve the connection strength between the polyethylene film 1 and the submersible chamber 5. The chemical reagent storage chamber 502 is used to store chemical reagents such as alum, polyacrylamide, and potassium chloride, and is used to purify turbid liquid in the hole. The sealing pit 503 and the compressed gas sealing pit 504 are used in conjunction with the sealing pressure rod 6 for the chemical reagent storage chamber 502 and the sealed compressed gas storage chamber 505. The sealed compressed gas storage chamber 505 is used to store compressed air. After the compressed gas is released, the system A density difference and a pressure difference are formed between the inside of the system (the turbidity purification treatment equipment in the hole) and the outside of the system (between the system and the hole wall), which facilitates the turbid liquid outside the system to enter the system. The separation channel 506 is in the compressed gas storage tank 505, which is used to separate the compressed gas and the sealing pressure rod 6. The inner diameter of the separation channel 506 is larger than the outer diameter of the sealing pressure rod 6, providing a channel for the turbid liquid outside the system to enter the system. The size of the annular gap between the separation channel 506 and the sealing pressure rod 6 can control the flow rate of the turbid liquid outside the system into the system. The gas injection channel 507 is used to inject compressed gas into the compressed gas storage tank 505. The airtight valve core fixing threaded hole 508 is fixedly connected to the airtight valve core 7 to close the compressed gas storage tank 505. The liquid flow channel 509 provides a flow channel for the turbid liquid outside the system to enter the system. The sealing spring limiting blind hole 510 is used to fix the sealing spring 8. The bottom cavity 511 provides space for the sealing control element and fixes the end cover 11.

[0045] In this embodiment, the sealing pressure rod 6 is used to seal the chemical reagent storage bin 502 and the compressed gas storage bin 505, and includes a sealing block connector 601, a compressed gas sealing block 602, a liquid sealing block 603, a connecting rod 604, a limiting boss 605, and a thread 606. The sealing block connector 601 is used to connect the compressed gas sealing block 602 and the liquid sealing block 603 into a whole, and plays a role of simultaneous sealing. The compressed gas sealing block 602 cooperates with the compressed gas sealing pit 504 to achieve sealing of the compressed gas storage bin 505, and the liquid sealing block 603 cooperates with the sealing pit 503 to achieve sealing of the outside and inside of the system. The connecting rod 604 can realize long-distance control of the above-mentioned sealing action, and the limiting boss 605 and the thread 606 cooperate with the limiting screw 10 to limit the position of the sealing pressure plate 9.

[0046] In this embodiment, the sealing pressure plate 9 achieves sealing by cooperating with the sealing spring 8, the limiting screw 10 and the sealing pressure rod 6, including a sealing spring fixing blind hole 901 and a sealing pressure rod limiting through hole 902. The sealing spring fixing blind hole 901 is used to fix the sealing spring 8, and the sealing pressure rod limiting through hole 902 is used to pass through the sealing pressure rod 6. The inner diameter of the sealing pressure rod limiting through hole 902 is smaller than the limiting boss 605 and larger than the outer diameter of the thread 606.

[0047] In this embodiment, the end cover 11 is fixedly connected to the bottom cavity 511 on the submersible chamber 5, and is used to prevent large pieces of rock debris at the bottom of the hole from entering the bottom cavity 511 and affecting the sealing effect of the sealing element. It includes a liquid flow hole 1101, an external thread 1102 and a pressure plate limiting boss 1103. The liquid flow hole 1101 is used for the circulation of liquid inside and outside the system, the external thread 1102 is used to be fixedly connected to the bottom cavity 511, and the pressure plate limiting boss 1103 is used to limit the position of the pressure plate 12 to prevent the pressure plate 12 from completely blocking the liquid flow hole 1101 due to the excessive weight of the submersible chamber 5, making it difficult for liquid inside and outside the system to circulate.

[0048] In this embodiment, the submersible chamber 5, the sealing pressure rod 6, the airtight valve core 7, the sealing spring 8, the sealing pressure plate 9, the limiting screw 10, the end cover 11 and the pressure plate 12 cooperate with each other to form a sealing mechanism. The sealing pressure rod 6 is fixedly connected to the sealing pressure plate 9 through the thread 606, the limiting boss 605 and the limiting screw 10. The sealing pressure plate 9 is fixedly connected to the sealing spring 8, and the pressure plate 12 is fixedly connected to the sealing pressure rod 6. In the initial stage, under the action of the sealing spring 8, the sealing pressure plate 9 drives the sealing pressure rod 6 to press the compressed air on the submersible chamber 5. The body sealing pit 504 and the sealing pit 503 are sealed to prevent the turbid liquid outside the system from entering the system, and the compressed air in the compressed air storage tank 505 is difficult to release. When the system reaches the bottom of the hole, under the action of the system's own weight, the diving tank 5 continues to move downward, the sealing spring 8 is compressed, the pressure plate 12 and the sealing pressure rod 6 move upward relatively, the seal of the compressed gas sealing pit 504 and the sealing pit 503 fails, and the compressed air is released. At this time, the turbid liquid outside the system enters the system under the action of the pressure difference and mixes with the chemical reagent.

[0049] This embodiment also provides a pore turbidity purification process, the steps are as follows:

[0050] S1, the submersible chamber 5 and its internal components drive the polyethylene film 1 to dive along the drill hole. Under the pressure of the turbid liquid in the hole, the air in the polyethylene film 1 is basically exhausted, and the shape of the polyethylene film 1 is compressed into a columnar shape (sheet shape or other shape, the specific shape is related to the initial shape of the polyethylene film). At this time, the liquid flow channel 509 and the compressed gas sealing pit 504 are both sealed by the sealing pressure rod 6;

[0051] S2. When the turbidity purification treatment equipment system in the hole reaches the bottom of the hole, the seals of the compressed gas sealing pit 504 and the sealing pit 503 fail, the compressed air is released, and the high-pressure gas rises rapidly in the polyethylene film 1, forming a negative pressure inside the system and a pressure difference between the inside and outside of the system. The turbid liquid outside the system enters the system under the action of the pressure difference and mixes with the chemical reagents and gas. Compared with injecting chemical reagents at the orifice, this method is more efficient in purifying the turbid liquid. In addition, the mixture rises along the path formed by the high-pressure gas in the polyethylene film 1. Finally, the mixture in the polyethylene film 1 reaches a balance with the pressure outside the system. At this time, the mixture inside the system is in a purified state with high transparency.

[0052] S3. After the pressure of the mixture inside the system and the turbid liquid outside the system is balanced, the polyethylene film 1 will not completely adhere to the hole wall due to pressure balance. At this time, clean water is injected into the polyethylene film 1 to ensure that the mixture inside the polyethylene film 1 has high transparency. Because the upper excess length of the polyethylene film 1 is higher than the hole mouth, under the action of the high head pressure difference, the turbid liquid outside the system will be squeezed into the cracks on the hole wall. Maintain sufficient pressure difference until the turbid liquid outside the system completely enters the cracks in the hole wall. After the polyethylene film 1 adheres to the hole wall, a television (or other technology) is lowered into the hole for imaging observation. After the observation is completed, the salvage female joint 2 is lowered to lift the submersible chamber 5 and other components out of the borehole.

[0053] The specific application of this embodiment is:

[0054] The diving chamber 5 and the internal components drive the polyethylene film 1 to dive along the borehole. Under the pressure of the turbid liquid in the hole, the air in the polyethylene film 1 is basically exhausted, and the shape of the polyethylene film 1 is compressed into a columnar shape (sheet or other shape, the specific shape is related to the initial shape of the polyethylene film). At this time, the liquid flow channel 509 and the compressed gas sealing pit 504 are both sealed by the sealing pressure rod 6; the turbidity purification treatment equipment system in the hole reaches the bottom of the hole, the seals of the compressed gas sealing pit 504 and the sealing pit 503 fail, the compressed air is released, and the high-pressure gas will rise rapidly in the polyethylene film 1, forming a negative pressure inside the system and a pressure difference between the inside and outside of the system. The turbid liquid outside the system enters the system under the action of the pressure difference and mixes with the chemical reagents and gas. Compared with injecting chemical reagents at the orifice, this method is more efficient in purifying the turbid liquid. In addition, the mixture will flow along As the high-pressure gas rises through the passage formed in the polyethylene film 1, the mixture in the polyethylene film 1 eventually reaches a state of equilibrium with the pressure outside the system. At this time, the mixture inside the system is in a purified state with high transparency. After the pressure of the mixture inside the system is balanced with the turbid liquid outside the system, the polyethylene film 1 will not completely fit the hole wall due to pressure balance. At this time, clean water is injected into the polyethylene film 1 to ensure that the mixture in the polyethylene film 1 has high transparency. Because the upper excess length of the polyethylene film 1 is higher than the hole mouth, under the action of the high head pressure difference, the turbid liquid outside the system will be squeezed into the cracks on the hole wall, and sufficient pressure difference is maintained until the turbid liquid outside the system completely enters the cracks in the hole wall. After the polyethylene film 1 fits the hole wall, a television (or other technology) is lowered into the hole for imaging observation. After the observation is completed, the salvage female connector 2 is lowered to lift the submersible chamber 5 and other components out of the borehole.

[0055] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A turbidity purification device for a hole, characterized in that: It includes a polyethylene film, a salvage female connector, a nylon cable tie, a salvage male connector, a submersible chamber, a sealing pressure rod, an airtight valve core, a sealing spring, a sealing pressure plate, a limit screw, an end cover, a pressure plate, and a salvage rope; the salvage female connector can be docked with the salvage male connector, a salvage rope is installed on the salvage female connector, the polyethylene film is fixed to the submersible chamber through a nylon cable tie, the salvage male connector is fixedly connected to the submersible chamber, and the submersible chamber, the sealing pressure rod, the airtight valve core, the sealing spring, the sealing pressure plate, the limit screw, the end cover, and the pressure plate cooperate with each other to form a sealing mechanism.

2. The turbidity purification equipment in the hole according to claim 1, characterized in that: The diameter of the polyethylene film is consistent with the diameter of the drill hole, the length is slightly greater than the depth of the drill hole, and the thickness is 4 to 10 threads; the transparency of the polyethylene film is required to be no less than 70%, the density is 0.941 to 0.965 g / cm3, and the tensile strength is 20 to 35 MPa; the remaining length of the polyethylene film above the hole mouth is recorded as the upper residual length, and the upper residual length is determined according to the groundwater pressure. The greater the groundwater pressure, the longer the upper residual length. The upper residual length can provide head pressure for the liquid in the polyethylene film in the hole, form a pressure difference with the turbid liquid between the polyethylene film and the hole wall, squeeze the turbid liquid into the formation cracks, and ensure that the polyethylene film is completely in contact with the hole wall.

3. The turbidity purification equipment in the hole according to claim 2, characterized in that: The salvage female joint comprises a main half-mold, a secondary half-mold, a spring, a wedge-shaped block, a turbid liquid discharge channel, a threaded hole, a salvage rope connecting frame, a salvage rope connecting hole and a concave cavity; the main half-mold and the secondary half-mold are fixedly connected by the threaded hole for easy assembly and disassembly; the diameter formed between the two wedge blocks can be adjusted by the cooperation of the spring and the wedge block, which is convenient for salvage operations; during salvage, the turbid liquid discharge channel provides a flow channel for the purified liquid in the system, thereby reducing the resistance to lowering the salvage female joint; the salvage rope connecting frame is provided with a salvage rope connecting hole for connecting the salvage rope; under the action of deadweight, the salvage female joint is docked with the salvage male joint, and the concave cavity mainly plays a guiding role, so that the salvage male joint can smoothly enter the concave cavity. At this time, the wedge shape of the wedge block cooperates with the salvage cone head. When the wedge block enters the limiting annular groove, the spring drives the wedge block to pop out, clamping the salvage male joint, and performing the salvage operation.

4. The turbidity purification equipment in the hole according to claim 3, characterized in that: The salvage male connector includes a salvage conical head, a limiting annular groove and a connecting rib. The salvage conical head and the limiting annular groove cooperate with the spring and the wedge block to achieve a blocking fit between the salvage male connector and the salvage female connector. The connecting ribs form a circulation space for the circulation of fluid in the system.

5. The turbidity purification equipment in a hole according to claim 4, characterized in that: The submersible chamber is the main body of the system and provides counterweight for the system. The diameter of the submersible chamber is slightly smaller than the aperture. The submersible chamber includes a polyethylene film fixing ring groove, a chemical reagent storage chamber, a sealing pit, a compressed gas sealing pit, a compressed gas storage chamber, a separation channel, a gas injection channel, an airtight valve core fixing threaded hole, a liquid flow channel, a sealing spring limiting blind hole and a bottom cavity. The cooperation of the polyethylene film fixing ring groove and the nylon cable tie can improve the connection strength between the polyethylene film and the submersible chamber. The chemical reagent storage chamber is used to store alum, polyacrylamide or potassium chloride chemical reagents, and the chemical reagents are used to purify turbid liquids in the hole. The sealing pit and the compressed gas sealing pit cooperate with the sealing pressure rod to realize the chemical reagent storage chamber, the sealed compressed gas storage chamber, and the sealed compressed gas storage chamber to store compressed air. After the compressed gas is released, a density difference and a pressure difference are formed between the inside and outside of the system, which facilitates the turbid liquid outside the system to enter the system. The separation channel is arranged in the compressed gas storage bin, and is used to separate the compressed gas and the sealing pressure rod. The inner diameter of the separation channel is larger than the outer diameter of the sealing pressure rod, providing a channel for the turbid liquid outside the system to enter the system. The size of the annular gap between the separation channel and the sealing pressure rod is used to control the flow rate of the turbid liquid outside the system into the system. The gas injection channel is used to inject compressed gas into the compressed gas storage bin. The airtight valve core fixing threaded hole is fixedly connected to the airtight valve core to close the compressed gas storage bin. The liquid flow channel provides a flow channel for the turbid liquid outside the system to enter the system. The sealing spring limiting blind hole is used to fix the sealing spring. The bottom cavity provides space for the sealing control element and a fixed end cover.

6. The turbidity purification equipment in a hole according to claim 5, characterized in that: The sealing pressure rod is used to seal the chemical reagent storage bin and the compressed gas storage bin. The sealing pressure rod includes a sealing block connector, a compressed gas sealing block, a liquid sealing block, a connecting rod, a limiting boss and a thread. The sealing block connector is used to connect the compressed gas sealing block and the liquid sealing block into a whole, thereby achieving simultaneous sealing. The compressed gas sealing block cooperates with the compressed gas sealing pit to achieve sealing of the compressed gas storage bin. The liquid sealing block cooperates with the sealing pit to achieve sealing of the outside and inside of the system. The connecting rod realizes long-distance control of the above-mentioned sealing action. The limiting boss and the thread limit the position of the sealing pressure plate by cooperating with the limiting screw.

7. The turbidity purification equipment in a hole according to claim 6, characterized in that: The sealing pressure plate achieves sealing by cooperating with the sealing spring, the limiting screw and the sealing pressure rod. The sealing pressure plate includes a sealing spring fixing blind hole and a sealing pressure rod limiting through hole. The sealing spring fixing blind hole is used to fix the sealing spring, and the sealing pressure rod limiting through hole is used to pass the sealing pressure rod. The inner diameter of the sealing pressure rod limiting through hole is smaller than the inner diameter of the limiting boss and larger than the outer diameter of the thread.

8. The turbidity purification equipment in a hole according to claim 7, characterized in that: The end cover is connected to the bottom cavity of the submersible chamber and is used to block large pieces of rock cuttings at the bottom of the hole from entering the bottom cavity to prevent affecting the sealing effect of the sealing element; the end cover includes a liquid flow through hole, an external thread and a pressure plate limiting boss. The liquid flow through hole is used for the circulation of liquid inside and outside the system, the external thread is used for fixed connection with the bottom cavity, and the pressure plate limiting boss is used to limit the position of the pressure plate to prevent the pressure plate from completely blocking the liquid flow through hole due to the excessive weight of the submersible chamber, making it difficult for liquid inside and outside the system to circulate.

9. The turbidity purification equipment in a hole according to claim 8, characterized in that: In the sealing mechanism, the sealing pressure rod is fixedly connected to the sealing pressure plate by a thread, a limiting boss and a limiting screw, the sealing pressure plate is fixedly connected to the sealing spring, and the pressure plate is fixedly connected to the sealing pressure rod; in the initial stage, under the action of the sealing spring, the sealing pressure plate drives the sealing pressure rod to seal the compressed gas sealing pit and the sealing pit on the submerged chamber, so that the turbid liquid outside the system cannot enter the system, and the compressed air in the compressed air storage chamber is difficult to release. When the system reaches the bottom of the hole, under the action of the system's own weight, the submerged chamber continues to move downward, the sealing spring is compressed, the pressure plate and the sealing pressure rod move upward relative to each other, the sealing of the compressed gas sealing pit and the sealing pit fails, and the compressed air is released. At this time, the turbid liquid outside the system enters the system under the action of the pressure difference and mixes with the chemical reagent.

10. A turbidity purification process in a well, implemented based on the turbidity purification device in a well according to claim 9, characterized in that: The steps include: S1. The diving chamber and its internal components drive the polyethylene film down the borehole. Under the pressure of the turbid liquid in the hole, the air in the polyethylene film is basically expelled, and the shape of the polyethylene film is compressed into the set shape. At this time, the liquid flow channel and the compressed gas sealing pit are both sealed by the sealing pressure rod; S2. When the turbidity purification equipment in the hole reaches the bottom of the hole, the compressed gas sealing pit and the seal of the sealing pit fail, the compressed air is released, and the high-pressure gas rises rapidly in the polyethylene film, forming a negative pressure inside the system and a pressure difference between the inside and outside of the system. Under the action of the pressure difference, the turbid liquid outside the system enters the system and mixes with the chemical reagents and gas. The mixture rises along the path formed by the high-pressure gas in the polyethylene film. Finally, the mixture in the polyethylene film reaches a state of equilibrium with the pressure outside the system. At this time, the mixture inside the system is in a purified state with high transparency. S3. After the pressure of the mixture inside the system and the turbid liquid outside the system is balanced, the polyethylene film will not completely adhere to the hole wall due to pressure balance. At this time, clean water is injected into the polyethylene film to ensure that the mixture inside the polyethylene film has high transparency. Because the upper excess length of the polyethylene film is higher than the hole mouth, under the action of the high head pressure difference, the turbid liquid outside the system will be squeezed into the cracks on the hole wall. Maintain sufficient pressure difference until the turbid liquid outside the system completely enters the cracks on the hole wall. After the polyethylene film adheres to the hole wall, imaging observation is carried out. After the observation is completed, the salvage female joint is lowered to lift the submersible chamber component out of the borehole.

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