Recyclable check valve

Abstract

The invention relates to a valve used in the production process of oil, natural gas, water or condensate gas. The problem that an existing valve is poor in sealing performance is mainly solved through structural improvement. The invention provides two preferable embodiments, wherein the first preferable embodiment comprises a bracket (1), a shear pin (2), an open type ball cage shell (3), an open type ball cage (4), a ball (5), a ball seat (6), two O-shaped rings (7), a valve body (9), a spring (10), a spring bracket (11), a rubber sealing ring (12) and a valve seat joint (13). A second preferred embodiment includes the elements of the first preferred embodiment, and further includes a debris collection device (20) including a lower end (14) of a debris collection device joint, an upper end (15) of the debris collection device joint, a rubber seal (16), a debris collection device joint (17), a debris collection device tube (18), and a debris collection device top (19).

Description

Technical Field

[0001] The present invention belongs to the category of mechanical structures, in particular to the category of valves. More precisely, the present invention belongs to a valve assembly designed for oil, natural gas, water or condensate production processes.

[0002] Technical issues The present invention addresses the technical problem of existing non-returnable check valves, which suffer from loss of sealing performance due to design flaws and valve operating conditions. This is crucial for achieving their primary function: preventing fluid from flowing back from the wellbore surface and through pumps (as part of oil, water, natural gas, or condensate production equipment). Thus, the present invention addresses the issues of shortened service life and impaired functionality of non-returnable check valves.

[0003] The present invention also addresses the problem of fluid backflow from the tubing through the ESP, ESPCP, or LESP equipment due to the insufficient sealing properties of existing non-recoverable check valves. This is achieved by introducing an improved design solution for a recoverable check valve and its seat connector, which is installed in the tubing string during oil, water, natural gas, or condensate production. In current practice, non-recoverable check valves are traditionally used in oil, water, natural gas, or condensate production processes. If a loss of sealing occurs, the remaining production equipment (pumps, tubing, packers, etc.) must be pulled out to replace these valves. This directly leads to the need for costly workovers to replace the entire production equipment, resulting in multiple days of lost production.

[0004] The present invention facilitates and improves the cost-effectiveness of oil, water, natural gas and gas condensate production processes, including the environmental impact of such production. Background Art

[0005] When installing production equipment in a well producing oil, water, natural gas or gas condensate, when the well reservoir pressure is lower than the hydrostatic pressure in the well string and the well reservoir energy is insufficient to achieve jet flow, it is necessary to use an artificial lift oil recovery method to achieve production.

[0006] These methods may vary; however, the devices that involve check valves as part of their components are as follows: ESP (Electric Submersible Pump), ESPCP (Electric Submersible Progressive Cavity Pump), and LESP (Linear Electric Submersible Pump).

[0007] The equipment used for the artificial lift method for extracting oil, water, natural gas or gas condensate in a well mainly consists of a pump with accompanying accessories and pipes (pipes connected to the pump, i.e. pipes from which the pump is suspended; they extend to the surface opening of the well, through which the oil, water, natural gas or gas condensate is conveyed to the surface of the well).

[0008] The basic principle is that the fluid in the well flows from the bottom of the well through the pump, check valve and oil pipe to the well surface.

[0009] The common feature of the above existing artificial lift methods is that in most cases Mining equipment is required to be equipped with a check valve valve These valves play a vital role in preventing the backflow of fluid from the pipeline into the pump during a pump shut-down, whether planned, unplanned, or due to a malfunction. The technical operating principle of these valves is to achieve and maintain a tight seal. These valves are installed into the tubing string (between two tubing joints) during a well intervention. Importantly, these valves lack the ability to be recovered until another well intervention operation is performed, hence the name Non-returnable check valve .

[0010] In wells equipped with ESPs and ESPCPs, production is generally still possible but at a reduced rate when a non-recoverable check valve loses its seal. However, in wells equipped with LESPs, the pump loses its function completely.

[0011] To better understand the principles of mining equipment, please refer to the following diagram: 1) ESP equipment – ​​on the provided diagram ( https: / / vibyorpublishers.org / content / ijesg / fulltext.php?aid=ijesg-7-049 ) Label the non-returnable check valve as a "check valve" and place it close to the earth's surface, not directly above the pump.

[0012] 2) ESPCP Equipment - The diagram provided (http: / / en.e-neng.net / index.php?route=product / product / index&product_sn=610) labels the non-returnable check valve as a "check valve" and places it close to the earth's surface, not directly above the pump.

[0013] 3) LESP equipment - refer to the video https: / / www.youtube.com / watch?v=UvBEso-Hr2s Normally, one non-return check valve is fitted, but there is an option to fit two or more check valves as an added safety precaution. These non-return check valves are an integral part of the equipment and are supplied with the rest of the equipment, although in rare cases a non-return check valve may not be fitted.

[0014] Non-returnable check valves require the installation of drain valves (in the above Figure 1 and Figure 2The drain valve is located directly above the check valve, within the tubing string. These drain valves may be equipped with shear pins or hydraulic discs. For drain valves with shear pins, at the beginning of a well intervention, a rod is inserted into the tubing at the surface to disconnect the shear pins, allowing fluid to flow back from the tubing string into the well. This procedure is performed to release fluid from the tubing string to facilitate removal of the empty tubing, ensure worker safety, and mitigate the risk of soil contamination. If the non-recoverable check valve lacks a seal, opening the drain valve is unnecessary, as all fluid will naturally drain from the tubing during the pullout process.

[0015] In wells equipped with shear-pin drain valves, when using artificial lift methods to remove asphaltene, resin, and paraffin deposits from the inner wall of the pipe, there is a risk that the blade of the wax-cutting device will become detached from the line. This can cause the blade to fall and break the shear pin, opening the drain valve and completely stopping production. In this case, replacing the entire device, i.e., performing a workover, becomes unavoidable.

[0016] Existing non-returnable check valves typically consist of the following components: a cage housing, cage, ball, and ball seat. More specifically, the non-returnable check valve is installed into a string of tubing at a planned depth above the pump (between two tubing joints). This depth can vary depending on factors such as the pump installation depth or the preferences of the production engineers employed by the oil company that owns the well. Pump installation depths can range from a few hundred meters to several thousand meters. The well intervention team interconnects the two sections of tubing using threaded joints to assemble all in-well equipment, including the non-returnable check valve.

[0017] There is another type of valve - Retrievable check valve , used for various tasks during workover (activating hydraulic packers, checking tubing string tightness, etc.). However, it does not participate in the production process. Retrievable check valves are similar to non-retrievable check valves and are also The sealing must be ensured during operation , which is its main function.

[0018] The current solution provides Non-returnable check valves used in mining These check valves are installed as an integral component when the production equipment is installed in the well. If the seal is compromised, the non-recoverable check valve cannot be retrieved until the next well intervention. This requires the entire equipment to be removed from the well, resulting in a halt in well operations and financial losses until the entire equipment (including tubing, pumps, etc.) can be pulled out.

[0019] The prevailing conditions in wells and the mechanical aspects of oil, gas, water or condensate extraction inevitably shorten the service life of valves. This is mainly due to wear of valve components, which ultimately undermines their basic technical function of providing sealing.

[0020] Pump shut-off in a well may occur suddenly due to a power outage, intermittently due to a decrease in the inflow of fluid from the well reservoir into the wellbore compared to the capacity of the pump, or intentionally due to the need to perform surface equipment maintenance, clean paraffin deposits in the tubing string, and similar operations.

[0021] During continuous pump operation, damage to the check valve may go unnoticed, leading to a loss of seal and, when the pump stops, fluid backflows from the pipeline through the pump. Restarting the pump in this situation is unfeasible because reverse rotation of the pump shaft during backflow could cause the shaft to break, leading to pump failure. Backflow can result in significant production losses of oil, water, natural gas, or condensate. These losses are primarily due to the time it takes to complete the backflow. The completion phase is concluded when the fluid levels in the tubing and casing reach equilibrium. This condition is essential for the safe restart of the pump. Furthermore, there is a delay while the pump is pumping fluid back to the surface and resuming production. Furthermore, during the period of fluid backflow and subsequent restart of the pump, the motor and its associated components heat up. This has a significant adverse effect on the insulation of the motor windings, the insulation of the power cables, and the rubber seals. It also accelerates the formation of scale in and on the pump.

[0022] In some cases, a loss of seal in a non-returnable check valve can cause the pump motor to overheat. This triggers the pump's automatic shutdown, preventing it from effectively lifting fluid through the pipeline to the surface. This shutdown is a safety measure designed to prevent damage to the motor, the most expensive part of the equipment. Effective motor cooling requires a constant flow of "fresh" fluid from the well reservoir. As the fluid circulates through the motor housing, it absorbs heat and is subsequently drawn into the pump and released through the tubing string to the surface.

[0023] In oil fields where the reservoir pressure is significantly lower than the hydrostatic pressure in the wellbore string, indirect circulation of (process) fluids to remove mechanical impurities that have accumulated on non-recoverable check valves, which could be a factor in the loss of sealing, is not feasible.

[0024] As a result, companies involved in oil, water, natural gas, or gas condensate production are forced to either operate pumps in a modified / altered mode and wait for equipment failure to trigger a workover, which involves replacing the entire underground production equipment, or immediately shut down the pumps and perform a workover to prevent continued production losses and potential damage to the remaining technically functional equipment. Daily production losses due to liquid backflow continue until the pump fails.

[0025] Economic cost assessment description: Well XX-1 is equipped with an electric submersible pump (ESP). The well produces 25 cubic meters of liquid per day, comprising 50% water cut and 12.5 cubic meters of crude oil. The pump has a daily processing capacity of 50 cubic meters per cubic foot and operates in intermittent mode with a motor frequency of 50.2 Hz. The pump runs for 30 minutes, then rests for 30 minutes, repeating this cycle throughout the day. The oil company selected the ESP equipment because its production capacity exceeded the well's expected production rate for the following reasons: 1. The expected production rate was initially high; however, a reduction in the fluid flow into the wellbore prompted a change in the pump's operating mode from continuous to intermittent.

[0026] 2. According to practical experience, scale deposits will accumulate faster due to the smaller technical openings of the pump impeller and diffuser.

[0027] 3. At that time, there were no pumps of suitable capacity in the warehouse inventory.

[0028] 4. And other reasons.

[0029] Furthermore, after a period of well production, the check valve loses its seal, leading to issues with fluid backflow during pump shutdowns. Therefore, the pump's operating pattern was modified, extending the run time to 160 minutes, followed by a 120-minute rest period. This adjustment deviated from the previous 30-minute run-on, 30-minute rest cycle. In fact, the pump automatically shut down and restarted five times a day. Due to fluid backflow (caused by the valve's inherent leaks), the well could not operate at full capacity. This was because it took 80 minutes for the fluid to surface after each rest period. During these 80 minutes, the oil company lost approximately 2.1 cubic meters of fluid while the pump operated and refilled the tubing, while no production reached the well surface. Considering a 50% water cut, this equated to approximately 1.04 cubic meters of oil. Based on the 2022 average global crude oil price of 73,357 dinars per cubic meter, the cost of each ESP operating cycle adjustment was approximately 76,400 dinars. With five such shutdowns (cycles) per day, the daily loss was approximately 390,000 dinars. The annual loss due to fluid backflow (i.e., operating mode adjustment) is calculated as 365 days x 390,000 dinars = 142,350,000 dinars. This calculation assumes that the motor and hydraulic protector remain functional, which is unlikely as they are likely to fail due to operating in high-temperature environments. In this case, a well intervention would be necessary.

[0030] Furthermore, the ESP system consumes unreasonable amounts of electricity during operation, from injecting fluid into the pipeline to lifting it to the surface. The motor in the pump section of the ESP system, with a daily processing capacity of 50 cubic meters, typically requires a rated power between 28 and 45 kW.

[0031] The power consumption for one hour of operation of the filling pipeline after the return of the fluid is as follows: 28 kW - 403 Serbian dinars / hour (average electricity price in Serbia as of August 2022, unit: kWh).

[0032] 32 kW – 461 Serbian dinars per hour (average electricity price in Serbia as of August 2022, in kWh).

[0033] 45 kW - 648 Serbian dinars / hour (average electricity price in Serbia as of August 2022, unit: kWh).

[0034] The ESP equipment installed in the XX-1 well is equipped with a 32kW motor. Since there are 5 (the above) adjusted operation cycles per day, the cost per hour is 461RSD (5 x 461RSD / h = 2,305RSD / day), so the cost per day is 2,305RSD.

[0035] On an annual basis, the total is 2,305 RSD x 365 days = 841,325 RSD.

[0036] The total annual losses of Well XX-1 are as follows: Unproduced crude oil + consumed electricity = 143,191,300.00 Serbian dinars, equivalent to 1,218,650.00 Euros.

[0037] This example should be understood as a rough representation of the economic losses caused by the leakiness of existing non-returnable check valves; it should in no way be considered as a limiting parameter for the present invention and its embodiments.

[0038] therefore, Retrievable and non-retrievable check valves Both can be used in the development process (including well workover and actual development activities). Non-returnable check valve Specially designed for use in the extraction of active oil, water, natural gas or condensate. The main challenge it faces is the loss of sealing, which is mainly caused by the accumulation of mechanical impurities or mechanical damage to components such as balls, ball seats or ball cages. In contrast, Retrievable check valve It is used for various other operations in the mining process.

[0039] The primary function of both valves is to prevent the backflow of fluid in the tubing string, which they achieve through their sealing properties. If they lose their sealing properties, they lose their basic function. Essentially, both types of valves are one-way, meaning they allow fluid to flow from the bottom of the well to the surface.

[0040] Regardless of the process involved (well workover or production), both types of valves are installed in the tubing string.

[0041] The present invention fundamentally improves the structural design of the existing recoverable check valve, so that it can be applied to the production (mining) process of oil, water, gas or condensate gas to replace the non-recoverable check valve.

[0042] The present invention, through its retrievable nature, overcomes the inherent limitations or issues of non-retrievable check valves, particularly the inability to replace them without removing the entire production equipment from the wellbore. When a check valve loses its primary function—sealing—it requires the entire production equipment to be removed from the wellbore for replacement.

[0043] In addition to the aforementioned advantages, the introduction of a retrievable feature in non-retrievable check valves creates the possibility of forced well-killing heat treatment of tubing and pumps during oil, water, natural gas, or condensate production. This involves pumping a treatment fluid directly into the tubing string by removing the valve from the tubing string, something not possible with traditional non-retrievable check valves. This method allows for direct application of the treatment fluid to ensure flow, making it more efficient and cost-effective than traditional and indirect heat treatment methods. These treatments are designed to remove accumulated asphaltene, resin, and paraffin deposits. Following the same principle, forced acid pump flushing can be performed on the interior of tubing and pumps to remove accumulated scale deposits without increasing the risk of damaging the cables clamped on the outside of the tubing string within the well casing. The efficiency of forced (direct) acid pump flushing of the tubing string lies in the fact that the treatment fluid (whether hot water, oil, steam, or acid) reaches the intended location directly, while requiring a smaller amount of fluid to ensure flow.

[0044] 1- Indirect pumping involves pumping the treatment fluid from the wellhead into the wellbore casing, then to the pump, through the pump, up through the non-returnable check valve, through the entire tubing string, and out to the surface of the well. During this process, a portion of the treatment fluid is unwillingly pumped into the well reservoir where oil, water, gas or condensate is produced.

[0045] 2- Direct pumping is to pump the treatment fluid directly from the wellhead into the tubing. The treatment fluid then passes through the entire tubing string, directly into and through the pump into the wellbore, and flows upward toward the wellhead. Very small, negligible amounts of treatment fluid can be pumped into well reservoirs where oil, water, gas, or condensate is produced.

[0046] By means of the structural improvements introduced by the present invention, the occurrence of mechanical damage leading to a non-sealing state can be minimized in both valve types (recoverable and non-recoverable).

[0047] The technical improvement by introducing the debris collection device 20 prevents mechanical impurities from being deposited on the valve, which would otherwise accumulate and cause problems for existing non-returnable check valve solutions, causing them to lose their sealing properties. Summary of the Invention

[0048] The present invention belongs to the category of mechanical structures, and specifically is a valve used in mining processes (including well repair, production, etc.).

[0049] The present invention fundamentally improves the structure of the existing recoverable check valve solution, so that it can replace the non-recoverable check valve and be applied in the actual production process of oil, water, gas or condensate gas.

[0050] The main problems solved by the present invention are: 1. The present invention solves the fundamental defect or problem of non-recoverable check valves through its recyclable technical characteristics, namely that the check valve cannot be replaced without pulling the entire production equipment out of the well, and the entire production equipment must be removed when the valve loses its basic function, namely sealing.

[0051] 2. Through the structural improvements introduced by the present invention, mechanical damage to both types of valves (recyclable and non-recyclable) can be minimized, thereby avoiding non-sealing conditions.

[0052] 3. By implementing an enhanced structural design for the debris collection device 20, the accumulation of mechanical debris (slugs) on the valve is effectively reduced. This preventative measure addresses a common challenge faced by existing non-returnable check valve solutions: the accumulation of debris that compromises the seal. A new structural component, the lower end 14 of the debris collection device connector, plays a key role in achieving this improvement.

[0053] The invention overcomes the technical shortcomings outlined by current solutions and addresses challenges such as equipment failure, production interruptions, financial losses due to production stoppages, and the need for well interventions. Improve the design of retrievable check valves and Integrated into the production process of oil, water, natural gas or condensate (traditionally relying on non-returnable check valves), the present invention solves Solved the above problems.

[0054] The application of this innovative technology Including the structural improvements described to facilitate the production of oil, water, gas or condensate The check valve can be removed and replaced without pulling the rest of the production equipment, such as pumps, tubing strings, packers, etc., from the well. This is in stark contrast to existing solutions, especially non-recoverable check valves, which cannot be recovered without dismantling the entire production equipment. It is impossible to dismantle the non-recoverable check valve.

[0055] Furthermore, there is no need to use or install drain valves in the tubing string. This is achieved by extracting a retrievable check valve, ensuring effective return of fluids from the tubing string at the start of a well intervention. The elimination of drain valves in production equipment minimizes the risk of tubing scrapers, used to remove asphaltene, resin, and paraffin deposits, being dropped due to wire breakage, which could lead to inadvertent shear pin breakage and drain valve opening. Even if the scraper were to fall, it would rest on top of the retrievable check valve or its debris collection device, preventing any compromise of the tubing string's sealing integrity and eliminating the need for a well intervention.

[0056] Compared with the traditional recyclable check valve, the present invention has the following improvements: The ball seat 6 is an existing component in the oil well pump. The extended structural design solution of the present invention combines the ball seat 6, optimizes the ball 5 and the ball seat 6 (functionally forming a pair), and achieves the most technically maximized and economically reasonable state.

[0057] Achieving technological maximization involves minimizing the risk of damage to the contact surface of the valve body 9, which would result from the ball 5 being positioned directly on the valve body 9, as in the configuration without the ball seat 6 detailed in the patent application form. This minimization of the risk of damage ensures the tightness, extended service life and normal operation of the check valve.

[0058] In the case of a solution without the ball seat 6, the surface of the valve body that the ball 5 contacts will be damaged due to the movement principle of the ball 5, and the entire valve body will need to be replaced. This is critical because it will become unusable and will not be able to perform its basic function of providing sealing through the ball 5 to prevent fluid backflow.

[0059] Existing retractable check valve solutions also suffer from the problem of relatively rapid deterioration of the inner surface of the element housing the ball (referred to in the present invention as the open ball cage 4) due to the movement of the ball during operation of the pump and the material it contains. This deterioration eventually leads to the destruction of this element (ball cage).

[0060] In some cases, the cage may become damaged and fragmented due to the continued radial movement of the ball 5. Although there is a potential for the ball to remain in contact with the ball seat and continue to maintain a seal when the pump is shut off, the damaged top of the cage may fall off during this process. The remaining lower part of the cage remains attached to the top of the valve body, which is still attached to its valve seat connector (referred to as valve seat connector 13 in this invention). Therefore, (the conventional recoverable check valve) cannot be removed from the oil pipe string in a conventional, quick, direct and cost-effective manner. Specifically, according to the original design, conventional removal and replacement methods cannot be achieved without performing a well repair, that is, removing the entire production equipment from the well.

[0061] Specifically, (in addition to axial movement) the ball 5 typically also undergoes radial movement, ultimately causing damage to the inner wall of the cage 4. This damage is characterized by the formation of indentations on the inner wall of the cage 4, which increases the radial clearance of the ball 5, exceeding the originally designed radial motion limit. As a result, the ball 5 deviates from its intended axial motion at varying angles, contacting the seat surface and causing deformation of the seat contact surface, ultimately leading to a loss of sealing performance.

[0062] The present invention solves the above technical problems by introducing a hardened guide rod 4.6 of the open cage to ensure the integrity of the ball seat 6. This element prevents excessive radial movement of the ball 5, thereby maintaining the design limits and preventing loss of sealing.

[0063] Compared to the prior art, the present invention introduces an improvement by adopting a dual type of seal (rubber and metal) between the structural elements (valve body 9 and valve seat joint 13). This enhances the sealing performance of the connection between these elements and ensures its tightness. The rubber seal is ensured by the rubber seal 12, and the metal seal is achieved by the conical surface 9.7 of the valve body and the conical surface 13.4a of the valve seat joint. This mechanism ensures the tightness of the valve, and the metal seal comes into play when the following situations occur: 1) the rubber seal fails due to factors such as high temperature (the rubber element is prone to degradation or brittleness); 2) damage occurs during installation and other situations during the uninterrupted operation of traditional recyclable check valves. In essence, the metal seal enhances the tightness.

[0064] In order to achieve a metal seal (contact between the conical surfaces 9.7 and 13.4a), the valve body 9 needs to be precisely aligned with the valve seat joint 13, so a mechanical lock is introduced to fix the valve in the valve seat joint 13.

[0065] The mechanical locking mentioned in the present application table relates to the mechanical and structural connection of the elements, namely the valve body 9, the spring 10 and the spring support 11, which are functionally connected to the valve seat 13 in the manner described in the detailed description of the present application.

[0066] By implementing the described improvements, the invention ensures tightness under nearly all operating conditions.

[0067] Some types of non-returnable check valves may have (although not always have) a valve equipped to Debris collection function able On the contrary, the current state of the art does not include a retrievable non-return valve including a debris collection device.

[0068] These solutions suffer from design flaws that prevent them from fully addressing the leak-tightness issue. Specifically, when the pump is shut off, fluid containing mechanical impurities (a natural phenomenon during the extraction of Earth's rock materials) settles in the debris collection device and the free space between it and the inner wall of the oil pipe where it, along with the other valve components, is located. However, because the structural design lacks an additional layer of protection, some impurities can still penetrate the valve ball and ball seat, causing contamination of the seat and ball, ultimately leading to a loss of leak-tightness.

[0069] The present invention introduces Improved structural scheme of debris collection device 20 , which overcomes the problems of current debris collection device solutions and also prevents the accumulation of mechanical deposits that often lead to loss of valve tightness. These improvements include: - A rubber seal 16 which acts as a functional and physical barrier between deposits (formed under the conditions described above) and all valve elements.

[0070] - The lower end 14 of the debris collection device connector ensures the connection of the retrievable non-return valve to the remaining elements of the debris collection device 20. In addition to the aforementioned connection function, the lower end 14 of the debris collection device connector also acts as a barrier to prevent mechanical deposits from reaching the ball seat 6 and the ball 5.

[0071] When the pump is shut off, the fluid in the tubing string stops flowing (due to the tightness of the retrievable check valve). Due to gravity, debris that is part of the fluid (including particles such as sediment, sand, and corrosion residues) settles onto a barrier (i.e., rubber seal 16). If the second preferred embodiment of the present invention requires that the invention be positioned within the wellbore at an angle, as opposed to vertical, a certain amount of mechanical impurities, if not entering through the lower end 14 of the debris collection device connector, can enter the debris collection device pipe 18 through the opening in the debris collection device pipe 18 (which serves as the fluid outlet during pump operation). This prevents debris from penetrating the ball 5 and its ball seat 6, thereby preventing contamination of the valve. This in turn prevents loss of tightness at the contact surface between the ball 5 and the ball seat 6 (i.e., the entire retrievable check valve).

[0072] This application provides two preferred embodiments of the present invention, namely: First preferred embodiment of the present invention It includes a bracket 1, a shear pin 2, an open ball cage shell 3, an open ball cage 4, a ball 5, a ball seat 6, an O-ring 7, a valve body 9, a spring 10, a spring bracket 11, a rubber seal 12, and a valve seat joint 13, which will be described in detail below.

[0073] Second preferred embodiment of the present invention The invention comprises all the elements of the first preferred embodiment of the present invention described above, and further comprises a debris collection device (20), which comprises a lower end (14) of a debris collection device connector, an upper end (15) of a debris collection device, a rubber seal (16), a debris collection device connector (17), a debris collection device pipe (18), and a debris collection device top (19), which will be described in detail below. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] The accompanying drawings include technical drawings of the preferred embodiments of the present invention as follows: Figure 1 The bracket 1 is shown with the described elements.

[0075] Figure 2 The shear pin 2 is shown with the elements described.

[0076] Figure 3 An open cage housing 3 is shown with its described elements.

[0077] Figure 4 An open cage 4 is shown with its described elements.

[0078] Figure 5 Show ball 5.

[0079] Figure 6 The ball seat 6 is shown with the described elements.

[0080] Figure 7 O-ring 7 is shown.

[0081] Figure 8 The valve body 9 is shown in a lateral 3D projection 8 , without individual reference to the elements shown, in order to facilitate a better understanding.

[0082] Figure 9 The valve body 9 is shown with the described elements.

[0083] Figure 10 A spring 10 is shown with the described elements.

[0084] Figure 11 The spring support 11 is shown with the described elements.

[0085] Figure 12 A rubber seal 12 is shown with the elements described.

[0086] Figure 13 The valve seat connector 13 is shown with the components described.

[0087] Figure 14 The lower end 14 of the debris collection device connector is shown with the components described.

[0088] Figure 15 The upper end 15 of the debris collection device connector is shown with the components described.

[0089] Figure 16 The debris collection device 20 is shown with its described components.

[0090] Figure 17 The debris collection device top 19 is shown.

[0091] Figure 18 Shown are two preferred embodiments of the check valve with all shown elements.

[0092] Detailed description The present invention describes a retractable check valve (hereinafter referred to as "the present invention") and all its essential elements, which in their mutual relationship form a unique and inventive concept. The present invention is not limited to the embodiments provided in the subsequent description, but in those cases it is considered to be the most preferred.

[0093] In any embodiment, the present invention is used as a valve installed as part of an oil well production device, specifically installed in an oil pipe string. The device is used to extract oil, natural gas, water or condensate from onshore and offshore oil wells and is composed of multiple detachable structural components.

[0094] The present invention and all its components can be constructed from a variety of materials. Preferred materials are those that are resistant to high temperatures, high pressures, corrosion, fluid flow, and the vibrations caused by fluid flow. Furthermore, the materials should be able to withstand the vibrations generated during the production of oil, water, natural gas, or condensate. This is to prevent deformation of the invention during use and to ensure its intended function.

[0095] These materials include materials composed of metal matrix components and metal alloys, and are not limited to materials with the above-mentioned properties, such as carbon fiber or high-resistance plastics such as ABS (acrylonitrile butadiene styrene), polycarbonate, high-density polyethylene, polyamide-imide, polydicyclopentadiene (PDCPD), etc.

[0096] The present invention does not exclude the possibility of combining different materials to construct the described elements in any embodiment.

[0097] Used in this application the term Has the following meanings: An "offshore well" is a well located above the water surface (e.g., the sea) for the production of oil, natural gas, water, or gas condensate.

[0098] "Onshore oil well" means an oil well drilled on land for the production of oil, natural gas, water or gas condensate.

[0099] Note: The valve body component is marked here with the number 9. At the same time, for the sake of ease of understanding, the number 8 belongs to the three-dimensional figure of the valve body 9 and is excluded in the subsequent citation of the text of this application.

[0100] In the first preferred embodiment , the present invention includes the following contents: The bracket 1 is a cylindrical element, comprising at least a bracket body 1.1, a threaded bracket base 1.2, and a bracket top 1.3. The bracket body 1.1 has two opposing ends, one of which is connected to the bracket base 1.2 and the other to one end of the bracket top, forming a one-piece structure.

[0101] The bracket body 1.1 preferably includes a fastening element 1.4 and at least one shear pin opening 1.5, wherein both elements extend from below the bracket top 1.3, wherein Figure 1The arrangement of the elements shown in FIG is a preferred variant, but does not exclude different arrangements. The fastening element 1.4 is designed as a recess (groove) that allows the tool used to secure the bracket to the open cage 4 to be hooked onto it and tightened by rotation. The shear pin opening 1.5 is designed to allow the shear pin 2 to be fully inserted into the bracket body 1.1.

[0102] The bracket base 1.2 has two ends and is composed of a threaded portion, one end of which is connected to one end of the bracket body 1.1, and the other end passes through the opening 3.4 of the open ball cage shell and leads to the opening 4.3 of the open ball cage, and is threadedly connected by the extended threaded portion.

[0103] The bracket top 1.3 has two ends, one of which is connected to one end of the bracket body 1.1, while the other end of the bracket top 1.3 has a conical structure to form a truncated cone. The diameter of the bottom of the bracket top 1.3 is larger than the diameter of the bracket body 1.1, so it forms a (flattened) expansion portion 1.6 at the connection with the bracket body 1.1. This limits the vertical upward movement of the open ball cage housing 3 during the process of pulling the present invention out of the well, and can potentially allow the use of tools to pull the present invention out of the well tubing string in the event of a well failure.

[0104] The bracket 1 may be a solid structure.

[0105] The threaded portion at the bracket base 1.2 can be made by cutting or rolling.

[0106] The diameter of the bracket base 1.2 may be smaller than or equal to the diameter of the bracket body 1.1.

[0107] The bracket 1 can be made of a single piece or a plurality of assembled pieces, as mentioned above, in which case the connection method can be welding.

[0108] - The shear pin 2 is a cylindrical element, the diameter of which is smaller than the diameter of the shear pin opening 1.5 into which it is inserted. The shear pin 2 may have flat ends and it is preferably made of solid material.

[0109] - The open cage housing 3 is a cylindrical element with different diameters throughout the housing structure, forming narrower and wider parts. The open cage housing 3 has two opposite ends and contains the following elements: The open cage shell body 3.1, the open cage shell neck 3.2, and the annular element 3.3 include openings at both ends of the structure, but one of the openings 3.4 has a smaller diameter (hereinafter referred to as the narrower opening), while the second opening 3.5 has a larger diameter (hereinafter referred to as the wider opening).

[0110] The open cage shell body 3.1 has two opposing ends and is hollow inside. One end has a wider opening 3.5, while the other end tapers conically to form a frustoconical body 3.6 with a flattened portion. This serves as the connection point between the open cage shell body 3.1 and the open cage shell neck 3.2. The open cage shell has three fluid passage openings 3.7, which are configured to extend preferably from halfway along the length of the open cage shell 3.1 to the extreme edge of the open cage shell, where the frustoconical body 3.6 begins.

[0111] In this embodiment, three fluid passage openings 3.7 are shown; however, in alternative embodiments of the present invention, it is still feasible to encounter a single opening or more than three openings. The size of these openings can be adjusted accordingly to achieve their intended function.

[0112] When the ball reaches its active state (moving axially upwards), the fluid passage opening 3.7 allows fluid from the wider opening 3.5 to flow towards the narrower opening 3.4 to flow out the side of the open cage housing 3.1. This is because the operation of the pump drives the fluid to move towards the wellbore surface.

[0113] The diameter of the fluid passage opening 3.7 must be smaller than the diameter of the ball 5 to prevent the ball 5 from being ejected or falling out of the valve due to the pressure and fluid flow generated by the operation of the pump in the well.

[0114] The diameter of the open cage shell 3 . 1 must be larger than the diameter of the open cage 4 so that the open cage 4 can enter the open cage shell 3 . 1 .

[0115] The open cage shell neck 3.2 has two opposite ends, one end of which is linked to the open cage shell body 3.1 and the other end of which is linked to the annular element 3.3.

[0116] The annular element 3.3, attached to the open cage housing neck 3.2 in the manner described above, has a larger diameter than the open cage housing neck 3.2 and forms a flattened flared portion 3.9 for attaching a tool for installing and extracting the retrievable check valve from its seat joint 13 (i.e., from the wellbore tubing string). The annular element 3.3 is constructed so that a single opening 3.8 is formed from the annular element 3.3, through which the shear pin 2 is introduced into the shear pin opening 1.5.

[0117] The open cage shell 3 may be made of a single piece or a plurality of assembled parts, as described above, and in this case, the joining method may be welding.

[0118] The open cage 4 is a cylindrical element having two opposite ends, both of which are provided with openings, one of which has an opening 4.2 of smaller diameter (hereinafter referred to as the "narrower opening"), and a second opening 4.1 (hereinafter referred to as the "wider opening") of larger diameter.

[0119] The open cage is hollow inside, forming a tubular structure. The open cage 4 is further configured to include two threaded sections 4.3: one threaded section 4.3 is threaded on the inside near the wider opening 4.1, and the other threaded section 4.3 is threaded on the inside near the narrower opening 4.2. The threaded section at the wider opening 4.1 is designed to connect the open cage 4 to the valve body 9.

[0120] The open cage has a conical section 4.4 at its narrower opening 4.2, forming a truncated cone. The cage 4 also includes at least three fluid passage openings 4.5, which are provided on the side of the open cage structure 4, and at least three hardened guide rods 4.6. Each fluid passage opening 4.5 is configured so that it preferably extends from approximately halfway along the length of the open cage structure 4 and further extends to the conical section 4.4.

[0121] In this configuration, three fluid passage openings 4.5 are shown. Nevertheless, alternative embodiments of the present invention are possible, including a single opening or more than three openings. The size of these openings can be adjusted according to their number to achieve their designated purpose.

[0122] Hardened guide rods 4.6 are located on the inner surface of the open cage 4, aligned with adjacent fluid passage openings 4.5 and matching their number. These hardened guide rods 4.6 are hard-lined with a material that is necessarily harder than the material forming the open cage 4 itself, but softer than the material used for the balls 5. This design ensures that the hardened guide rods 4.6 prevent damage to the inside of the open cage 4 as the balls 5 move within the cage during pump operation.

[0123] The cage 4 with the conical section 4.4 and the narrower opening 4.2 is inserted into the open cage housing 3 through the wider opening 3.5 of the open cage housing and is located entirely within the open cage housing body 3.1.

[0124] By introducing the open cage 4 into the open cage housing 3 as described above, the fluid passage opening 4.5 of the open cage and the fluid passage opening 3.7 of the open cage housing 3 are positioned opposite and parallel to each other, thereby allowing the fluid to flow as described above. The fluid passage opening 4.5 and the fluid passage opening 3.7 do not contact each other's surfaces, thereby allowing unimpeded flow between them.

[0125] The ball 5 is a geometrically spherical element, preferably made of solid material, whose diameter is greater than the diameter of the fluid passage opening 4.5 of the open cage 4 and the diameter of the fluid passage opening 3.7 of the open cage housing 3, thereby preventing the ball 5 from being displaced when moving in the open cage 4.

[0126] As fluid flows upward along the longitudinal axis of the present invention from the bottom of the wellbore to the Earth's surface, the ball transitions to its active state, moving axially. When the pump, which is responsible for lifting fluid from the wellbore to the surface, is stopped, it enters its passive state. In this static state, the ball contacts the inner edge 6.3 of the ball seat opening, ensuring a seal between the seat 6 and the ball 5. When the pump is shut off, the ball 5 contacts the seat 6, resting against the inner edge 6.3 of the opening, ensuring a tight seal.

[0127] The ball seat 6 is a cylindrical element comprising: a built-in opening 6.1 located in the center of the structure, flat surfaces 6.2 on the upper and lower sides of the ball seat, an inner edge 6.3 of the opening, and an outer edge 6.4 of the opening. The diameter of the opening 6.1 is smaller than the diameter of the ball 5, while the flat surfaces 6.2 on the upper and lower sides of the ball seat 6 are completely flat and parallel to each other.

[0128] The inner edge 6.3 of the opening is chamfered towards the interior of the ball seat 6 structure, forming an angled surface. This configuration allows the ball 5 to be precisely aligned with the opening 6.1 during inactivity. This allows contact with the inner edge 6.3 of the opening, effectively sealing the opening 6.1 and ensuring airtightness.

[0129] In addition to the materials specified in the instructions, the ball seat 6 can also be made of ceramic, but the hardness of the ball seat 6 must be lower than that of the ball 5. This precaution is taken to maintain the physical properties of the ball 5; otherwise, the sealing between the ball 5 and the ball seat 6 will be compromised, thereby jeopardizing the integrity of the entire valve.

[0130] - O-ring 7 is an annular element that engages with groove 9.3 on the check valve body 9. This configuration shows two O-rings 7. The present invention may include a single rubber seal or more than two rubber seals, the number of rubber seals corresponding to the number of grooves 9.3 inserted.

[0131] The valve body 9 is a cylindrical element with two opposing ends. The entire structure is hollow and has the following features: built-in openings 9.1 at each end; two threaded portions 9.2 on the outer surface of the structure; two indentations designed to form grooves 9.3 (hereinafter referred to as "grooves"), each of which accommodates an O-ring 7; a recessed portion formed to form groove 9.4, into which the rubber seal 12 is inserted; a fluid return opening 9.5 is provided on the surface between the two grooves 9.3; and a fastening element 9.6 extending into the recess (groove) can have a rectangular or square shape. This allows the valve body 9 to be connected and secured to other components of the valve structure by turning it using an appropriate tool, with the tapered chamfered edge 9.7 facing inward, ensuring a metal-to-metal seal. The valve body 9 has a tapered expansion portion 9.8, which also serves as a limiter for the spring 10.

[0132] The present invention includes at least one fluid return opening 9.5, the embodiment shown having six such openings 9.5.

[0133] In an embodiment of the present invention, the components are preferably arranged as follows: opening 9.1, threaded portion 9.2, groove 9.3, six fluid return openings 9.5, groove 9.3, fastening element 9.6, conical chamfered edge 9.7 for metal sealing, groove 9.4 (with structural elements in between), conical expansion portion 9.8, threaded portion 9.2 ending at the lower end of the valve body 9, where another opening 9.1 is formed.

[0134] Spring 10 is a cylindrical element with two opposing ends. Its entire structure is hollow and includes the following elements: two internal openings, an opening 10.1 having a diameter (hereinafter referred to as the "wider opening") that is larger than the diameter of the other opening 10.2 (hereinafter referred to as the "narrower opening"), a flat surface 10.3 located near the narrower opening 10.2, half openings 10.4, and a surface 10.5 formed between two adjacent half openings 10.4. Spring 10 also includes a tapered chamfered edge 10.6.

[0135] The lower end of spring 10, positioned adjacent to opening 10.2, is inserted through opening 13.1 into seat adapter 13. Upon contact with tapered surface 13.4a, contact surface 10.5 narrows relative to its initial, uncompressed position, allowing it to pass through constriction 13.2. It is then guided into and positioned within spring compartment 13.5. Tapered chamfered edge 10.6 contacts tapered surface 13.4c, effectively securing the retractable check valve in its seat adapter 13.

[0136] The curvature of surface 10.5 may vary, with a preferred curvature being 3 degrees.

[0137] The spring is constructed to ensure that the valve remains firmly in its designated position within the seat joint 13 throughout operation, thereby maintaining its sealing properties.

[0138] The spring support 11 is a cylindrical element with two opposite ends in its completely hollow structure and has the following features: two internal openings, one of which (referenced 11.1) has a larger diameter (hereinafter referred to as the "wider opening") than the second opening 11.2 (hereinafter referred to as the "narrower opening"). In addition, it has a tapered portion 11.3 on the inside, forming a funnel-like structure, a threaded portion 11.4 on the inside below the wider opening 11.1, a rounded edge 11.5 near the narrower opening 11.2, a circular depression forming a groove 11.6 for accommodating the rubber seal 12, an outer tapered portion 11.7 and a fastening element 11.8.

[0139] The groove 11.6 is used to accommodate the rubber seal 12, while the fastening element 11.8 facilitates the attachment of a tool for attaching the spring support 11 to the valve body 9. The connection can be secured by a rotation locking and tightening structure and can have a rectangular or square shape.

[0140] The rubber seal 12 is an annular element placed in the groove 11.6 of the spring support 11 and in the groove 9.4 of the valve body. The present invention comprises at least two seals, referenced 12.

[0141] The valve seat connector 13 is a cylindrical element with two opposite ends, characterized by a completely hollow interior and comprising the following elements: Two built-in openings 13.1 at its two opposite ends, as well as two contracted portions 13.2 inside the internal structure, two threaded portions 13.3 located outside the structure, characterized in that one threaded portion 13.3 is positioned below each opening 13.1 at the opposite ends of the valve seat joint 13, combined with tapered surfaces 13.4a, 13.4b and 13.4c on the inside of the structure, and a spring compartment 13.5.

[0142] Conical surfaces 13.4a and 13.4b serve to facilitate insertion of the spring 10, spring support 11, and rubber seal 12 into the valve seat joint 13. Simultaneously, when the valve is in its final position, conical surface 13.4a establishes a metal-to-metal seal with the conical chamfered edge 9.7 of the metal seal on the valve body 9. Conical surface 13.4c, with the conical chamfered edge 10.6 of the spring 10, establishes contact and securely holds the retractable check valve within its valve seat joint 13.

[0143] The ends of the valve seat connector 13 are connected to the tubing connector element (connector) in the wellbore via threaded portions 13.3, which do not form part of the present invention. This allows the embodiment of the present invention to be securely fixed within the tubing string. The connection is achieved by screwing the valve seat connector 13 into the tubing connector element (connector).

[0144] In the second preferred embodiment, the present invention retains the components of the first preferred embodiment while respecting the structure and details outlined in the first preferred embodiment. However, the second preferred embodiment has elements that differ from the first preferred embodiment. In addition, the second preferred embodiment also introduces additional elements, including the following: The present invention Second preferred embodiment The invention comprises: a bracket 1 according to the first preferred embodiment, a shear pin 2 according to the first preferred embodiment, and an open ball cage housing 3 according to the first preferred embodiment, wherein the improvement is that a threaded portion 3.3a is provided on the outer side of the structure instead of the annular element 3.3; an open ball cage 4 according to the first preferred embodiment, a ball 5 according to the first preferred embodiment, a valve seat joint 6 according to the first preferred embodiment, two O-rings 7 according to the first preferred embodiment, a valve body 9 according to the first preferred embodiment, a spring 10 according to the first preferred embodiment, a spring bracket 11 according to the first preferred embodiment, two rubber seals 12 according to the first preferred embodiment, and a valve seat joint 13 according to the first preferred embodiment; according to the innovation of this embodiment, a debris collection device 20 is introduced, which is characterized by the following elements: -The lower end 14 of the debris collection device connector is a cylindrical element with two opposite ends, including: an opening 14.1 built into the opposite ends, a threaded portion 14.2 located on the inner surface of the structure, a threaded portion 14.3 located on the outer surface of the structure, a flat surface 14.4, a groove 14.5 located on the side of the structure, and a fluid channel opening 14.6.

[0145] The lower end 14 of the connector is connected to the open cage housing 3 via the threaded portion 14.2 using the threaded portion 3.3a, so that the bracket 1 can be inserted into the lower end 14 of the connector. The lower end 14 of the debris collection device connector is connected to the upper end 15 of the debris collection device connector via the threaded portion 14.3.

[0146] The groove 14.5 extends toward the inside of the structure and exposes its two ends. One end 14.5a forms a rectangular shape, which extends toward the other end and becomes rounded, thereby forming a semicircular shape 14.5b, with a fluid channel opening 14.6 formed at the circular position, pointing toward the center of the structure.

[0147] The lower end 14 of the joint extending toward the other end has a closed internal threaded portion 14.2 that is hollow inside and structurally consistent with the design of the bracket top 1.3 inserted into the lower end 14 of the joint extending toward the other end.

[0148] This structure of the present invention involves four grooves 14.5 and four fluid channel openings 14.6.

[0149] The upper end 15 of the debris collection device connector is a cylindrical structural element, the diameter of which varies throughout the component parts, thereby dividing it into a wider part 15.1 and a narrower part 15.2, and comprising the following features: a built-in opening 15.3 at each of the two opposite ends, a threaded portion 15.4 with threads on the inner side of the structure, a threaded portion 15.5 with threads on the outer side of the structure, and a fastening element 15.6 in the form of a groove in the wider part 15.1.

[0150] The fastening element 15 . 6 may be rectangular or square in shape to facilitate securely connecting the upper end 15 of the debris collecting device connector to the lower end 14 of the debris collecting device connector using an appropriate tool.

[0151] - A rubber seal 16, an annular element, is designed to be positioned outside the upper end of the debris collection device connector, in its narrower portion 15.2, with the end edge 16.1 of the rubber seal assembly in contact with the inside of the tubing string on which the valve itself is mounted. During pump shutdown, when the fluid in the pipeline is at rest (due to the tightness of the valve), under the influence of gravity, fluid components (sediment, sand, corrosion particles, etc.) form deposits on the first barrier (in this case, the rubber seal 16) and remain there. The rubber seal 16 acts as a functional barrier between the debris and all valve components under these conditions. The present invention includes at least one rubber seal 16, and in the illustrated embodiment, three rubber seals 16.

[0152] The debris collector connector 17 is a cylindrical element with a hollow interior and two opposite ends. It comprises: an opening 17.1 at each end, two internally threaded sections 17.2, a fastening element 17.4 extending as a groove in the middle of the outer side of the structure, and a cylindrical narrowing 17.3 inside the structure. One threaded section 17.2 connects the debris collector connector to the upper end 15 of the debris collector connector by being screwed onto the threaded section 15.5, while the other threaded section 17.2 connects it to the debris collector pipe 18.

[0153] The fastening element 17 . 4 may have a rectangular or square shape, thereby allowing the debris collecting device connector 17 to be securely attached to the upper end 15 of the debris collecting device connector using a suitable tool.

[0154] The debris collection device tube 18 is a tubular structural element (meaning hollow inside) having two ends and comprising the following components: at least one internal fluid passage opening 18.1 and two externally threaded portions 18.2 at both ends.

[0155] The fluid passage openings 18.1 are preferably provided in the debris collection device tube 18, below the debris collection device top 19. In this embodiment, the debris collection device tube 18 has sixteen built-in fluid passage openings 18.1.

[0156] The debris collecting device top 19 is a cylindrical element having two opposite ends and comprising the following components: a debris collecting device top base 19.1 and a debris collecting device top body 19.2.

[0157] Debris collection device base 19.1 is also constructed to include a built-in opening 19.3, an internally threaded portion 19.4, and a cavity 19.5, into which the debris collection device tube 18 is introduced and secured by screwing it onto the threaded portion 19.4. The base 19.1 on the top of the debris collection device also includes a conical portion 19.6 located at one end opposite to the built-in opening 19.3.

[0158] The debris collection device top body 19.2 is connected at one end to the portion of the debris collection device top base 19.1 having a conical portion 19.6. The other end has a conically expanded portion 19.7, terminating in a conical portion 19.8 of its structure, forming a truncated cone. The debris collection device top body 19.2 also includes a fastening element 19.9 extending in the form of a groove. Fastening element 19.9 can have a rectangular or square shape, allowing the debris collection device top 19 to be securely attached to the debris collection device tube 18 in the manner described using an appropriate tool.

[0159] The conical expansion 19.7 enables an installation and removal tool to be connected to the retrievable check valve so that it can be lowered or pulled out of the pipeline if necessary.

[0160] The debris collecting device top 19 can be made into a single unit or can be assembled from a plurality of connecting parts as described above. For the latter, the connection method can be welding.

Claims

1. A recyclable check valve, characterized in that: include: Bracket (1), Shear pin (2), Open type cage shell (3), Open type ball cage (4), Ball (5), Ball seat (6), Two O-rings (7), Valve body (9), Spring (10), Spring bracket (11), Rubber seals (12), Valve seat connector (13); The bracket (1) is cylindrical and comprises: a bracket body (1.1), a bracket base (1.2) with a thread, and a bracket top (1.3); wherein the bracket body 1.1 has two opposite ends, one end is connected to one end of the bracket base (1.2), and the other end is connected to the other end of the bracket top (1.3); the bracket body also includes a fastening element (1.4) in the form of a groove and at least one shear pin opening (1.5) located below the bracket top (1.3); wherein the bracket base (1.2) has two ends, both ends having threaded portions, one end is connected to one end of the bracket body (1.1), and the other end is introduced into the open ball cage opening (4.3) through the open ball cage shell opening (3.4), and is threadedly connected through the threaded portion; wherein the bracket top (1.3) has two ends, one end is connected to the bracket body (1.1), and the other end is a conical structure; Wherein, the shear pin (2) is cylindrical, and its diameter is necessarily smaller than the shear pin opening (1.5) into which it is inserted; The open ball cage shell (3) is cylindrical and has two ends, and its entire shell structure has different diameters, forming narrower and wider parts; the open ball cage shell (3) comprises: an open ball cage shell body (3.1), an open ball cage shell neck (3.2), and an annular element (3.3); the open ball cage shell body (3.1) is constructed with hollow interiors at both ends, one end has a wider opening (3.5), and the other end is tapered and gradually becomes thinner to form a truncated cone (3.6); the open ball cage shell body (3.1) is connected to the open ball cage shell neck (3.2); the open ball cage shell body (3.3 ...); the open ball cage shell body (3.3) is connected to the open ball cage shell neck (3.2); the open ball cage shell body (3.3) is connected to the open ball cage shell neck (3.2); the 1) also includes three built-in fluid channel openings (3.7), the three built-in fluid channel openings extending from half the length of the open ball cage shell body (3.1) to the edge where the cone (3.6) of the shell begins; the open ball cage shell neck (3.2) is connected to the open ball cage shell body (3.1) at one end and to an annular element (3.3) at the other end, the annular element including a built-in opening (3.4); the diameter of the annular element (3.3) is larger than the diameter of the open ball cage shell neck (3.2) and forms a flat expansion portion (3.9), the flat expansion portion including a built-in opening (3.8), and the shear pin (2) is introduced into the shear pin opening (1.5) through the built-in opening (3.8); The open ball cage (4) is cylindrical with two opposite ends, is hollow inside, and includes a narrower opening (4.2) and a wider opening (4.1), two threaded portions (4.3), a conical section (4.4), three fluid channel openings (4.5), and three hardened guide rods (4.6). One threaded portion (4.3) is threaded on the inner side near the wider opening (4.1) and allows the open ball cage (4) to contact the valve body (9); and the other threaded portion (4.3) is threaded on the inner side near the wider opening (4.1) and allows the open ball cage (4) to contact the valve body (9). The threaded portion (4.3) has threads on the inner side near the narrower opening (4.2), wherein the conical section (4.4) extends at the narrower opening (4.2); wherein the fluid channel opening (4.5) is located on the side of the open ball cage (4); wherein the hardened guide rod (4.6) extends on the inner surface between adjacent fluid channel openings (4.5) and is configured to reinforce the structure; wherein a gap is formed between the fluid channel opening (4.5) and the fluid channel opening (3.7); wherein the diameter of the ball (5) is larger than the diameters of the fluid passage opening (4.5) and the fluid passage opening (3.7) of the open ball cage, wherein the ball (5) in a stationary state comes into contact with the upper edge of the opening (6.3) of the ball seat (6); The ball seat (6) is cylindrical and includes an opening (6.1), a flat surface (6.2), an inner edge of the opening (6.3), and an outer edge of the opening (6.4); the opening (6.1) extends to the middle of the structure and has a diameter smaller than the diameter of the ball (5); the flat surface (6.2) is located on the upper and lower sides of the ball seat (6); and the inner edge of the opening (6.3) is inclined toward the interior of the ball seat (6); Each O-ring (7) is annular and matches the groove (9.3); wherein the valve body (9) is cylindrical, hollow inside, and comprises the following elements: two openings (9.1), a threaded portion (9.2), a groove (9.3), a fluid return opening (9.5), a fastening element (9.6), a conical chamfered edge (9.7), and a conical expansion portion (9.8); wherein each opening (9.1) is located at the other end of the valve body (9), and the threaded portion (9.2) has threads on the outer surface of the structure; wherein the elements are preferably arranged as follows: opening (9.1), threaded portion (9.2), groove (9.3), fluid return opening (9.5), groove (9.3), fastening element (9.6), groove (9.3), conical chamfered edge (9.7), groove (9.4), with the structural elements of the valve body (9), the conical expansion portion (9.8), the threaded portion (9.2), the threaded portion terminating at the other end of the valve body (9), and the second opening (9.1) extending from the threaded portion; The spring (10) is cylindrical, has two opposite ends and a hollow interior, and comprises: a wider opening (10.1), a narrower opening (10.2), a flat surface (10.3), a half opening (10.4), a surface (10.5), and a tapered chamfered edge (10.6); wherein the flat surface (10.3) is located at the narrower opening (10.2); wherein a surface (10.5) is formed between two adjacent half openings (10.4); The spring support (11) is cylindrical, has two opposite ends and a hollow interior, and includes a wider opening (11.1), a narrower opening (11.2), a tapered portion (11.3), a threaded portion (11.4), a rounded edge (11.5), a groove (11.6), an outer tapered portion (11.7) and a fastening element (11.8); wherein the tapered portion (11.3) extends inside to form a funnel-shaped structure; wherein the threaded portion (11.4) is threaded inside the spring support (11) below the wider opening (11.1); wherein the rounded edge (11.5) extends at the narrower opening (11.2); The valve seat joint (13) is cylindrical, having two opposite ends and a hollow interior, comprising: two openings (13.1), two contracted portions (13.2) inside the structure, two threaded portions (13.3), a tapered surface (13.4a), a tapered surface (13.4b), a tapered surface (13.4c), and a spring compartment (13.5); wherein one opening (13.1) extends to opposite ends of the valve seat joint (13) located below each opening (13.1), and one threaded portion (13.3) extends to the outside of the valve seat joint (13), wherein the tapered surface (13.4a) forms a metal seal with a tapered chamfered edge (9.7) for metal sealing, wherein the tapered surface (13.4c) with a tapered chamfered edge (10.6) forms contact and holds the recyclable check valve in its valve seat joint (13).

2. The valve according to claim 1, wherein It also includes a debris collection device (20), and the debris collection device (20) further includes the following elements: The lower end (14) of the debris collection device connector, The upper end (15) of the debris collection device connector, Rubber seals (16), Debris collection device connector (17), Debris collection device pipe (18), The top of the debris collection device (19), The lower end (14) of the debris collection device connector is cylindrical and has two opposite ends, including: an opening (14.1) built into the opposite ends thereof, a threaded portion (14.2) provided with a thread on the inner side of the structure, a threaded portion (14.3) provided with a thread on the outer side of the structure, a flat surface (14.4), a groove (14.5) extending to the side of the structure, and four fluid channel openings (14.6); wherein the lower end (14) of the debris collection device connector is connected to the cage shell (3) through the threaded portion (14.2). ) is connected via a threaded portion (3.3a) such that the bracket (1) is introduced into the lower end (14) of the connector, and furthermore, the lower end (14) of the debris collection device connector is connected to the upper end (15) of the debris collection device connector via a threaded portion (14.3); wherein each groove (14.5) extends inwardly of the structure and has two ends, one end (14.5a) forming a rectangle and extending towards the other end and becoming rounded to form a semicircle (14.5b), wherein each rounded position of each groove (14.5) includes a fluid channel opening (14.6); wherein the upper end (15) of the debris collection device connector is cylindrical, the diameter of which varies throughout the structure, thereby forming a wider portion (15.1) and a narrower portion (15.2), and further comprising at least two openings (15.3), each extending from an opposite end thereof, a threaded portion (15.4) having threads on the inside of the structure, and a threaded portion (15.5) having threads on the outside of the structure, and a fastening element extending as a groove (15.6) extending in the wider portion (15.1); The rubber seal (16) is annular and is located outside the upper narrow portion (15.2) of the debris collection device joint; the end edge (16.1) of the rubber seal (16) is in contact with the inner side of the tube; The debris collection device connector (17) is cylindrical, has two opposite ends and a hollow interior, includes an opening (17.1) built into both ends, two internal threaded portions (17.2) extending from opposite ends, a fastening element (17.4) extending into a groove in the middle of the outer side of the structure, and a cylindrical narrowing (17.3) in the structure; one of the threaded portions (17.2) connects the debris collection device connector (17) to the upper portion of the debris collection device connector (15) through the threaded portion (15.5); and the other threaded portion (17.2) is connected to the debris collection device pipe (18) through a threaded connection. The debris collection device pipe (18) is constructed to be hollow at both ends, including a fluid channel opening (18.1) and two external threaded parts (18.2) located at both ends thereof; The top of the debris collecting device (19) is cylindrical and has two opposite ends, including: a base (19.1) at the top of the debris collecting device and a main body (19.2) at the top of the debris collecting device, wherein the base (19.1) at the top of the debris collecting device is further constructed to include a built-in opening (19.3), an internal threaded portion (19.4) and a cavity (19.5), into which the debris collecting device pipe (18) is introduced and tightened and fixed through the threaded portion (19.4); the base (19.1) at the top of the debris collecting device ) includes a conical portion (19.6) at the end opposite to the end extending from the opening (19.3); wherein the main body (19.2) at the top of the debris collecting device is connected at one end to the part of the bottom of the top of the debris collecting device (19.1) close to the conical portion (19.6), wherein the other end includes a conical expansion portion (19.7) and ends with a constructed conical portion (19.8) to form a structure similar to a truncated cone, and the main body (19.2) at the top of the debris collecting device also includes a fastening element (19.9).

3. Valve according to claims 1 and 2, wherein the fastening elements (9.6), (11.8), (15.6), (17.4) and (19.9) are rectangular or square.

4. The valve according to claim 2, wherein the number of the rubber seal (16) is at least one.

5. The valve according to claim 2, wherein the number of fluid passage openings (18.1) is limited to sixteen.

6. The valve according to claim 2, wherein the top portion (19) of the debris collecting device is made of a single piece or a plurality of assembled pieces connected by welding.

7. Valve according to claims 1 and 2, wherein the hardened guide rod (4.6) is made of a material which is necessarily harder than the material of which the open cage (4) is made and which is necessarily softer than the material of which the ball (5) is made.

8. The valve according to claim 8, wherein the material of the hardened guide rod (4.6) is metal or a metal alloy.

9. The valve according to claim 8, wherein the material of the hardened guide rod (4.6) is high-strength plastic.

10. The valve according to claim 1 or 2, wherein the ball (5) is made of solid material.

11. The valve according to claim 1 or 2, wherein the ball seat (6) is made of ceramic.

12. Valve according to claims 1 and 2, wherein the number of fluid return openings (9.5) is limited to six such openings.

13. Valve according to claims 1 and 2, wherein the number of half openings (10.4) is limited to six such openings, the length of each half opening (10.4) being in the range of 40-70% of the total length of the spring structure (10).

14. The valve according to claim 1 or 2, wherein the curvature of the surface (10.5) is 3 degrees.

15. The valve according to claims 1 and 2, wherein each fluid passage opening (4.5) extends from approximately the midpoint of the length of the open cage structure (4) and extends to the conical section (4.4).

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