A sand-controlling, throttling, well-killing manifold

Abstract

This invention relates to the field of choke and kill manifolds, specifically a sand-preventing choke and kill manifold, comprising a base, a four-way pipe fixedly installed on the top of the base, a choke and kill pipe assembly disposed on the outside of the four-way pipe, and the choke and kill pipe assembly fixedly installed on the base; a sand-preventing mechanism for filtering and preventing sand from entering the four-way pipe, the sand-preventing mechanism being disposed on the outside of the four-way pipe; wherein the sand-preventing mechanism includes a choke manifold, the choke manifold being installed on the base via a support member, and an inlet pipe fixedly connected to the end of the choke manifold away from the support member. This sand-preventing choke and kill manifold, through a differentiated filtration design of a three-stage No. 1 filter screen, intercepts sand and gravel of different particle sizes in the medium, achieving fine filtration of the medium, effectively preventing sand and gravel of different sizes from entering subsequent pipelines and causing blockages, and ensuring smooth medium flow.

Description

Technical Field

[0001] This invention relates to the field of throttling and kill manifold technology, specifically a sand-preventing throttling and kill manifold. Background Technology

[0002] As oil and gas exploration and development advances into deep wells, ultra-deep wells, and complex oil and gas reservoirs, the composition of downhole media becomes increasingly complex, often containing solid impurities such as gravel and rock cuttings of different particle sizes. When these impurities enter the choke and kill manifold along with the media, they can easily cause problems such as pipeline blockage, valve jamming, and equipment wear. This not only affects the normal flow and pressure control accuracy of the manifold, but may also lead to equipment failure and shutdown, increasing operational risks and maintenance costs.

[0003] Existing sand control mechanisms in throttling and kill manifolds often employ a single filter or a simple filtration structure, capable of intercepting only sand and gravel of a specific size. They fail to achieve graded filtration of impurities of different sizes, allowing small-diameter sand and gravel to easily penetrate the filter and enter subsequent pipelines. Over time, this accumulation can clog critical components such as valves and throttle valves, impacting media flow efficiency. Furthermore, the sand and gravel intercepted on the filter surface lack directional guidance and rapid cleaning mechanisms, allowing impurities to adhere to the filter surface and reducing the flow area. This necessitates frequent shutdowns for disassembly and cleaning, increasing maintenance workload, interrupting operations, and reducing overall efficiency. In addition, some sand control mechanisms have insufficient sealing between the sand control mechanism and the manifold body, making them prone to leakage under high-pressure media impacts, posing safety hazards. Summary of the Invention

[0004] The present invention provides a sand-controlling and throttling well control manifold to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sand-controlling and throttling manifold, comprising a base, a four-way pipe fixedly installed on the top of the base, a throttling and throttling pipe assembly disposed on the outside of the four-way pipe, and the throttling and throttling pipe assembly fixedly installed on the base;

[0006] A sand-proof mechanism is used to filter and prevent sand from entering the four-way pipe. The sand-proof mechanism is located on the outside of the four-way pipe.

[0007] The sand control mechanism includes a throttling manifold, which is mounted on the base via a support member. An inlet pipe is fixedly connected to the end of the throttling manifold away from the support member, and the end of the inlet pipe away from the throttling manifold is fixedly connected to the four-way pipe.

[0008] A partition ladder is fixedly installed inside the inlet pipe, and a No. 1 filter screen is slidably fitted inside the partition ladder. The No. 1 filter screen is used to filter the sand and gravel inside the medium, and the No. 1 filter screen is inserted through both ends of the inlet pipe.

[0009] Preferably, the partition ladder is provided with guide plates, which are used to guide the filtered sand and gravel towards both ends of the inlet pipe. A first plate is fixedly connected to the outside of the guide plate, and the first plate passes through the outside of the inlet pipe and extends into its interior.

[0010] Preferably, a second piece is fixedly connected to the outer end face of the first filter screen, and a first adapter rod is connected to the outer end face of the first filter screen via a bearing. A first block is fixedly connected to the end of the first adapter rod away from the first filter screen, and a U-shaped rod is fixedly connected to the bottom of the first block.

[0011] Preferably, a fixed rail is fixedly installed at the bottom of the inlet pipe, and a load-bearing block is slidably adapted inside the fixed rail. The load-bearing block is sleeved on the outside of the U-shaped rod, and a third magnetic block is fixedly connected to the outside of the U-shaped rod. The third magnetic block and the load-bearing block have an attractive relationship.

[0012] The fourth magnetic block is fixedly connected to the side of the U-shaped rod away from the third magnetic block, and the fourth magnetic block also has an attractive relationship with the load-bearing block.

[0013] Preferably, a first spring rod is fixedly connected to the end of the first filter screen away from the first block, a second spring rod is fixedly connected to the end of the first spring rod away from the first filter screen, and a second filter screen is fixedly connected to the end of the second spring rod away from the first spring rod.

[0014] The No. 1 filter is located inside the inlet pipe. At this time, the spring in the No. 1 spring rod is in a state of torsion and compression. Therefore, when the No. 2 filter replaces the No. 1 filter, the No. 1 spring rod will release the force to make the No. 1 filter flip quickly.

[0015] Preferably, the end of the second filter screen away from the second spring rod is connected to the second adapter rod via a bearing, the end of the second filter screen away from the second spring rod is fixedly connected to the third piece, the end of the second adapter rod away from the second filter screen is fixedly connected to the second block, and the bottom of the second block is fixedly connected to the U-shaped rod.

[0016] Preferably, the four-way pipe is provided with a drainage mechanism, which is used to drain and discharge excessive media accumulated in the four-way pipe;

[0017] The venting mechanism includes a retention pipe, and a pressure gauge is fixedly installed on the top of the retention pipe. The pressure gauge is used to detect the pressure of the four-way pipe when it is under high pressure.

[0018] Preferably, a top plate is arranged inside the retention tube, a connecting rod is fixedly connected to the bottom of the top plate, and a base plate is fixedly connected to the bottom end of the connecting rod. The assembly consisting of the top plate, the connecting rod, and the base plate is used for sealing the top of the four-way tube.

[0019] When the pressure inside the four-way pipe increases, the assembly consisting of the top plate, the connecting rod, and the base plate moves upward, the medium enters the retention pipe, and the pressure gauge performs pressure detection processing.

[0020] Preferably, a vertical shaft is fixedly connected inside the four-way tube, a sleeve is rotatably mounted on the outside of the vertical shaft, and a return spring is fixedly connected to the outside of the sleeve, the return spring being used to reset the sleeve.

[0021] The sleeve plate is internally fixedly connected to a partition plate, and is slidably fitted with a plate.

[0022] Preferably, the partition is used to limit the position of the insert, and a first magnetic block is fixedly connected to the side of the partition away from the vertical axis, and a second magnetic block is fixedly connected to the end of the insert near the first magnetic block, wherein the first magnetic block and the second magnetic block have a repulsive relationship.

[0023] Preferably, the end of the insert away from the sleeve plate is squeezed and adapted to the pipe inside the four-way pipe, and a magnetic shielding sheet is fixedly connected to the end of the insert near the partition plate, and the end of the magnetic shielding sheet away from the insert plate is fixedly connected to the partition plate.

[0024] The magnetic shielding sheet is flexible.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. The sand control mechanism employs a differentiated filtration design with three stages of No. 1 filters to intercept sand and gravel of different particle sizes in the media, achieving fine filtration and effectively preventing sand and gravel of different sizes from entering subsequent pipelines and causing blockages, ensuring smooth media flow. Simultaneously, the partition ladder, in conjunction with guide plates tilted at 15°-30°, can directionally guide the intercepted sand and gravel to both ends of the inlet pipe, where the detachable No. 1 plate quickly removes the sand and gravel, significantly simplifying the cleaning process and reducing manual cleaning time and intensity.

[0027] 2. The filter switching system of the sand control mechanism can be operated without stopping the machine. Operators only need to push the U-shaped rod to simultaneously pull out filter screen number one and connect filter screen number two, significantly reducing downtime for maintenance and ensuring production continuity. During the switching process, the first spring rod releases pre-stored torsional and compressive forces, causing filter screen number one to rotate 180° to shake off sand and gravel, achieving self-cleaning and reducing the frequency of manual cleaning and maintenance costs. Simultaneously, when the U-shaped rod slides to its limit position, magnetic blocks number three or four engage with the load-bearing block. Combined with the sleeve-type limiting structure where the load-bearing block slides along a fixed rail, this effectively limits the radial displacement of the filter screen, preventing vibration or displacement caused by high-pressure media impact, ensuring stable filter screen working position, and further improving the reliability of filtration and sand control effects.

[0028] 3. The venting mechanism monitors the pressure inside the retention pipe in real time via a pressure gauge, indirectly reflecting the pressure status inside the four-way pipe. This provides operators with accurate pressure data feedback, facilitating timely monitoring of the unit's operating conditions. When the pressure inside the four-way pipe exceeds the set threshold of 70MPa, the medium thrust pushes the sealing assembly composed of the top plate, connecting rod, and bottom plate upwards, connecting the four-way pipe with the retention pipe to achieve automatic venting. This rapidly releases high pressure, preventing damage to the unit due to excessive pressure and significantly improving the unit's high-pressure resistance and operational safety.

[0029] 4. The flow guiding system inside the four-way pipe maintains the initial angle of the sleeve plate through the pre-tightening force of the return spring. Combined with the sealed flow guiding channel formed by the insertion plate pressing against the inner wall of the four-way pipe under the action of magnetic repulsion, it can guide the medium to flow along a preset path, effectively preventing medium short circuits and ensuring precise and controllable medium delivery direction. When the throttling and kill pipe assembly passage is blocked, causing a local pressure increase, the impact force of the medium can push the insertion plate to contract and the magnetic shielding plate to deform elastically, causing the sleeve plate to rotate under the balanced action of the medium impact force and the return spring, automatically guiding the medium to an unobstructed passage, realizing dynamic diversion. This dynamic adjustment function without manual intervention can quickly respond to pipeline blockage problems, reduce downtime caused by passage blockage, significantly improve the adaptability of the unit to complex operating conditions, and ensure long-term stable medium flow. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the external structure of a sand-controlling and throttling well control manifold according to the present invention.

[0031] Figure 2 This is a partial cross-sectional view of the leakage mechanism of the present invention.

[0032] Figure 3 This is a full cross-sectional structural diagram of the leakage mechanism of the present invention.

[0033] Figure 4 This is a schematic diagram of the internal components of the four-way pipe of the present invention.

[0034] Figure 5 This is a schematic diagram of the structure of the sleeve of the present invention.

[0035] Figure 6 This is a cross-sectional view of the sleeve structure of the present invention.

[0036] Figure 7 This is a cross-sectional view of the sleeve structure of the present invention.

[0037] Figure 8 This is a schematic diagram of the sand-prevention mechanism of the present invention.

[0038] Figure 9 This is a schematic diagram of the load-bearing block in the sand-prevention mechanism of the present invention.

[0039] Figure 10 This is a schematic diagram of the structure of the No. 1 spring rod in the sand-proof mechanism of the present invention.

[0040] Figure 11 This is a cross-sectional view of the partition ladder in the sand-prevention mechanism of the present invention.

[0041] Figure 12 This is a cross-sectional view of the guide plate in the sand-proof mechanism of the present invention.

[0042] In the picture:

[0043] 1. Base;

[0044] 2. Four-way pipe;

[0045] 3. Drainage mechanism; 31. Retention pipe; 32. Pressure gauge; 33. Top plate; 34. Connecting rod; 35. Base plate; 36. Vertical shaft; 37. Sleeve plate; 38. Return spring; 39. Partition plate; 30. Magnetic block No. 1; 301. Magnetic shielding sheet; 302. Panel; 303. Magnetic block No. 2;

[0046] 4. Choke and kill tubing assembly;

[0047] 5. Sand control mechanism; 51. Throttling manifold; 52. Inlet pipe; 53. Dividing ladder; 54. No. 1 filter screen; 55. Guide plate; 56. No. 1 plate; 57. No. 2 plate; 58. No. 1 adapter rod; 59. No. 1 block; 50. U-shaped rod; 501. No. 3 magnetic block; 502. Fixed rail; 503. Load-bearing block; 504. No. 4 magnetic block; 505. No. 1 spring rod; 506. No. 2 spring rod; 507. No. 2 filter screen; 508. No. 3 plate; 509. No. 2 adapter rod; 500. No. 2 block. Detailed Implementation

[0048] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0049] Please see Figures 1 to 12 The present invention provides a technical solution:

[0050] Example 1: 1. Sand control mechanism for filtration and gravel guidance.

[0051] like Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, this embodiment demonstrates the filtration and gravel guiding process of the sand control mechanism 5. In the sand control mechanism 5, the throttling manifold 51 is welded and fixed to the base 1 via a support member. The end of the manifold 51 away from the support member is connected to the inlet pipe 52 via a flange. The other end of the inlet pipe 52 is also fixed to the four-way pipe 2 via a flange, forming a media flow channel. A partition ladder 53 is welded and fixed inside the inlet pipe 52. A sliding groove is opened on the inner side of the partition ladder 53. The first filter screen 54 is slidably fitted into the sliding groove, and both ends of the first filter screen 54 penetrate the inlet pipe 52, allowing it to move axially along the inlet pipe 52.

[0052] Guide plates 55 are welded onto the partition ladder 53. The tilt angle of the guide plates 55 is set to 15°-30°. A first plate 56 is welded and fixed to the outside of the guide plate 55. The first plate 56 is inserted into the slot opened on the outside of the inlet pipe 52 and extends into the inside. When the medium enters the inlet pipe 52 from the throttling manifold 51, it first flows through the first filter screen 54. There are three first filters 54. The first filter screen 54 in the middle intercepts medium-sized sand and gravel in the medium, while the first filter screen 54 above intercepts small-sized sand and gravel, and the first filter screen 54 below intercepts large-sized sand and gravel. Under the impact force of the medium, the intercepted sand and gravel slide along the inclined surface of the guide plate 55 to both ends of the inlet pipe 52. When it is necessary to clean the guide plate 55, the operator pulls out the first plate 56 to remove the sand and gravel accumulated on the guide plate 55, quickly completing the cleaning and preventing sand and gravel from accumulating on the filter surface and affecting the flow of the medium.

[0053] The combination of the partition ladder 53 and the guide plate 55 enables the directional guidance of sand and gravel, reducing the risk of filter clogging. The detachable first plate 56 design facilitates quick cleaning by operators and ensures the continuous and stable operation of the sand prevention mechanism 5. At the same time, the flange connection between the inlet pipe 52 and each component ensures the sealing of the medium flow and avoids leakage of high-pressure medium.

[0054] 2. Sand prevention mechanism filter switching and self-cleaning.

[0055] A second piece 57 is welded and fixed to the outer end face of filter screen 54, and is rotatably connected to adapter rod 58 via a bearing. The end of adapter rod 58 away from filter screen 54 is welded and fixed to block 59. The bottom of block 59 is welded to U-shaped rod 50. A fixed rail 502 is bolted to the bottom of inlet pipe 52. A load-bearing block 503 is slidably fitted inside the fixed rail 502. The load-bearing block 503 is sleeved on the outside of U-shaped rod 50. Magnetic block 501 and magnetic block 504 are respectively glued and fixed to the outside of U-shaped rod 50, and both maintain an attractive relationship with the load-bearing block 503.

[0056] A first spring rod 505 is welded to the end of filter screen 54 furthest from block 59. The other end of spring rod 505 is welded to spring rod 506. The end of spring rod 506 furthest from spring rod 505 is welded to filter screen 507. The end of filter screen 507 furthest from spring rod 506 is rotatably connected to adapter rod 509 via a bearing, and a third piece 508 is welded to it. The end of adapter rod 509 furthest from filter screen 507 is welded to block 500. The bottom of block 500 is welded to U-shaped rod 50.

[0057] When grit adheres to the surface of filter screen 54, reducing the flow area, the operator applies external force to push the U-shaped rod 50 to the left. The U-shaped rod 50 moves block 59 and adapter rod 58, pulling filter screen 54 out of the inlet pipe 52. Simultaneously, block 500 at the other end of the U-shaped rod 50 pushes filter screen 507 into the inlet pipe 52 via adapter rod 509, completing the rapid filter switching. During the switching process, spring rod 505, which was originally in a torsional and compressed state, releases its pre-stored force, causing filter screen 54 to quickly rotate 180°, shaking off the adhered grit into the collection area, achieving self-cleaning. When the U-shaped rod 50 slides to the extreme positions at both ends, the third magnetic block 501 or the fourth magnetic block 504 engages with the load-bearing block 503 to ensure that the filter screen is stably fixed in the working position. When the load-bearing block 503 slides along the fixed rail 502, the radial displacement of the U-shaped rod 50 is restricted by the sleeve structure to prevent the filter screen from vibrating under the impact of high pressure medium.

[0058] When the U-shaped rod 50 moves to the right limit position, the distance between the third magnetic block 501 and the load-bearing block 503 is smaller than the distance between the load-bearing block 503 and the fourth magnetic block 504. Therefore, the load-bearing block 503 will move to the left under the attraction of the third magnetic block 501, thereby increasing the overall stability of the inlet pipe 52.

[0059] The filter switching process is simple and quick, and can be completed without stopping the machine, ensuring uninterrupted operation of the device; the self-cleaning function of the No. 1 spring rod 505 reduces the frequency of manual cleaning and lowers maintenance costs; the magnetic block attraction and the limiting design of the load-bearing block 503 ensure the stability of the filter during operation and prevent the filter from shifting under high pressure, thus affecting the filtration effect.

[0060] Example 2: Pressure monitoring and drainage treatment of the drainage mechanism.

[0061] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment illustrates the pressure monitoring and discharge operation process of the discharge mechanism 3. The retention pipe 31 of the discharge mechanism 3 is fixed to the top of the four-way pipe 2 via a threaded connection. A pressure gauge 32 is bolted to the top of the retention pipe 31 to monitor the pressure inside the retention pipe 31 in real time, indirectly reflecting the pressure situation inside the four-way pipe 2. Inside the retention pipe 31 is a sealing assembly consisting of a top plate 33, a connecting rod 34, and a base plate 35. The two ends of the connecting rod 34 are welded and fixed to the top plate 33 and the base plate 35 respectively. Under the action of gravity and the static pressure of the medium, the sealing assembly tightly fits the top opening of the four-way pipe 2, preventing the medium from entering the retention pipe 31.

[0062] Under normal operating conditions, the pressure gauge 32 displays the same pressure as the working pressure inside the four-way pipe 2. When the pressure exceeds a set threshold (e.g., 70 MPa) due to the accumulation of medium inside the four-way pipe 2, the upward thrust of the medium on the chassis 35 exceeds the sum of the weight and friction of the sealing assembly, causing the sealing assembly to move upward. After the sealing assembly moves upward, the four-way pipe 2 connects with the retention pipe 31, and the high-pressure medium flows through the retention pipe 31 to the low-pressure area, thus releasing the pressure. During this process, the pressure gauge 32 simultaneously displays the pressure change, providing real-time pressure feedback to the operator for timely monitoring of the device's operating status.

[0063] Real-time monitoring and automatic pressure relief within the four-way pipe are achieved to prevent damage to the device due to excessive pressure and ensure operational safety. The real-time feedback function of pressure gauge 32 enables operators to accurately control the operating status of the device and take timely countermeasures.

[0064] Example 3: Internal flow guidance and dynamic flow splitting in a four-way pipe.

[0065] like Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, this embodiment describes the operation and dynamic diversion process of the internal flow guiding structure of the four-way pipe 2. A vertical shaft 36 is welded and fixed inside the four-way pipe 2. A sleeve 37 is rotatably mounted on the outside of the vertical shaft 36 via a bearing. A return spring 38 is welded and fixed on the outside of the sleeve 37. The other end of the return spring 38 is welded to the inner wall of the four-way pipe 2. The sleeve 37 maintains its initial angle under the preload of the return spring 38, guiding the medium to flow along a preset path, such as from the sand control mechanism to the choke and kill pipe assembly.

[0066] A partition 39 is welded and fixed inside the sleeve 37. The insert 302 slides within a track opened on the inner side of the sleeve 37. The partition 39 is used to limit the insert 302 and prevent it from sliding excessively. A first magnetic block 30 is glued and fixed to the side of the partition 39 away from the vertical axis 36. A second magnetic block 303 is glued and fixed to the end of the insert 302 near the first magnetic block 30. The two have a repulsive relationship. Under the action of the repulsive force, the insert 302 extends out of the sleeve 37 and is pressed and adhered to the inner wall of the four-way pipe 2 to form a sealed flow channel to prevent short circuit of the medium. The part of the insert 302 that contacts the four-way rod 2 is flexible. A flexible magnetic shielding sheet 301 is bonded and fixed to one end of the panel 302 near the partition 39. The other end of the magnetic shielding sheet 301 is bonded and fixed to the partition 39. There are two first magnetic blocks 30 and two second magnetic blocks 303, which are symmetrically arranged with the magnetic shielding sheet 301 as the axis of symmetry. In addition, the magnetic shielding sheet 301 is used to isolate the magnetic force between the two first magnetic blocks 30 and the two second magnetic blocks 303.

[0067] When the passage of the choke and kill tubing assembly 4 becomes blocked, causing a local pressure increase, the impact force of the medium on the insert 302 increases. This overcomes the magnetic repulsion force and pushes the insert 302 into the sleeve 37, causing the magnetic shielding plate 301 to undergo elastic deformation. Under the balanced action of the medium impact force and the return spring 38, the sleeve 37 rotates, automatically adjusting the flow direction to guide the medium into a clear passage, achieving dynamic diversion and ensuring normal medium flow.

[0068] The cooperation between the sleeve 37 and the insert 302 enables directional flow of the medium and prevents short circuits. The dynamic diversion function can automatically deal with the problem of blockage in the passage without manual intervention, thereby improving the stability and reliability of the device operation and reducing downtime caused by blockage.

[0069] The working principle of this invention is as follows: After the medium enters the inlet pipe 52 from the throttling manifold 51, it first contacts the No. 1 filter screen 54 in the partition ladder 53. The No. 1 filter screen 54 intercepts medium-sized sand and gravel in the medium. Under the impact force of the medium, the intercepted sand and gravel slide along the guide plate 55 on the partition ladder 53 towards both ends of the inlet pipe 52. The guide plate 55 is tilted at an angle of 15°-30°. Finally, by pulling out the No. 1 plate 56, the operator can quickly clean the guide plate 55 and avoid the accumulation on the surface of the filter screen.

[0070] When grit adheres to the surface of filter screen 54, reducing the flow area, an external force pushes the U-shaped rod 50 to the left. The U-shaped rod 50 moves the top block 59 and the first adapter rod 58, causing filter screen 54 to be pulled out of the inlet pipe 52. Simultaneously, the second block 500, connected to the other end of the U-shaped rod 50, pushes filter screen 507 into the inlet pipe 52 via the second adapter rod 509, achieving rapid filter switching. During the switching process, the first spring rod 505 releases the pre-stored torsional and compressive forces, causing filter screen 54 to quickly rotate 180°, shaking off the adhered grit into the collection area, completing self-cleaning. When the U-shaped rod 50 slides to its extreme positions, the third magnetic block 501 or the fourth magnetic block 504 engages with the load-bearing block 503, ensuring the filter screen is stably fixed in the working position. When the load-bearing block 503 slides along the fixed rail 502, the radial displacement of the U-shaped rod 50 is restricted by the sleeve structure to prevent the filter screen from vibrating under the impact of high pressure medium.

[0071] The sealing assembly, consisting of the top plate 33, connecting rod 34, and base plate 35, tightly seals the top opening of the four-way pipe 2 under the action of gravity and static pressure of the medium, preventing the medium from entering the retention pipe 31. The pressure gauge 32 monitors the pressure inside the retention pipe 31, i.e., the pressure at the top of the four-way pipe, in real time. Under normal operating conditions, the displayed value is consistent with the working pressure inside the four-way pipe 2. When the medium accumulates inside the four-way pipe 2, causing the pressure to exceed a set threshold such as 70 MPa, the upward thrust of the medium on the base plate 35 is greater than the sum of the weight and friction of the sealing assembly, pushing the sealing assembly upward. After the sealing assembly moves upward, the four-way pipe 2 connects with the retention pipe 31, and the high-pressure medium flows out to the low-pressure area through the retention pipe 31, realizing pressure release. The pressure gauge 32 simultaneously displays the pressure change during the leakage process, providing real-time pressure feedback to the operator.

[0072] Under the preload of the return spring 38, the sleeve 37 maintains its initial angle, guiding the medium along a preset path, such as from the sand control mechanism to the choke and kill tubing assembly. The insert 302, under the repulsive force of the first magnetic block 30 and the second magnetic block 303, extends out of the sleeve 37 and presses against the inner wall of the four-way pipe 2, forming a sealed flow channel to prevent short circuits. When a blockage occurs in a certain passage, causing a local pressure increase, the impact force of the medium on the insert 302 increases, overcoming the magnetic repulsion and pushing the insert 302 to contract inwards towards the sleeve 37. During the contraction of the insert 302, the magnetic shield 301 undergoes elastic deformation. The sleeve 37 rotates under the balanced action of the medium impact force and the return spring 38, automatically adjusting the flow direction to guide the medium into a clear passage, achieving dynamic diversion.

[0073] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made by those skilled in the art based on the above concepts without creative effort shall fall within the scope of protection of the present invention.

Claims

1. A sand-controlling, throttling, well-killing manifold, characterized in that, include: A base, on the top of which a four-way pipe is fixedly installed, and a choke kill pipe assembly is provided on the outside of the four-way pipe, the choke kill pipe assembly being fixedly installed on the base; A sand-proof mechanism is used to filter and prevent sand from entering the four-way pipe. The sand-proof mechanism is located on the outside of the four-way pipe. The sand-proof mechanism includes a throttling manifold, which is installed on the base by a support member. An inlet pipe is fixedly connected to the end of the throttling manifold away from the support member. The end of the inlet pipe away from the throttling manifold is fixedly connected to the four-way pipe. A partition ladder is fixedly installed inside the inlet pipe. A No. 1 filter screen is slidably fitted inside the partition ladder. The No. 1 filter screen is used to filter sand and gravel inside the medium, and the No. 1 filter screen is inserted through both ends of the inlet pipe. The partition ladder is equipped with guide plates, which are used to guide the filtered sand and gravel towards both ends of the inlet pipe. A first plate is fixedly connected to the outer side of the guide plate. The first plate passes through the outer side of the inlet pipe and extends into its interior. A second plate is fixedly connected to the outer end face of the first filter screen. A first adapter rod is connected to the outer end face of the first filter screen through a bearing. A first block is fixedly connected to the end of the first adapter rod away from the first filter screen. A U-shaped rod is fixedly connected to the bottom of the first block. The first filter screen is fixedly connected to a first spring rod at the end away from the first block, the first spring rod is fixedly connected to a second spring rod at the end away from the first filter screen, and the second spring rod is fixedly connected to a second filter screen at the end away from the first spring rod. The No. 1 filter is located inside the inlet pipe. At this time, the spring in the No. 1 spring rod is in a state of torsion and compression. Therefore, when the No. 2 filter replaces the No. 1 filter, the No. 1 spring rod will release the force to make the No. 1 filter flip quickly. The end of the second filter screen away from the second spring rod is connected to the second adapter rod via a bearing. The end of the second filter screen away from the second spring rod is fixedly connected to the third piece. The end of the second adapter rod away from the second filter screen is fixedly connected to the second block. The bottom of the second block is fixedly connected to the U-shaped rod.

2. The sand-controlling, throttling, and well-killing manifold according to claim 1, characterized in that: A fixed rail is fixedly installed at the bottom of the inlet pipe. A load-bearing block is slidably fitted inside the fixed rail. The load-bearing block is sleeved on the outside of the U-shaped rod. A third magnetic block is fixedly connected to the outside of the U-shaped rod. The third magnetic block and the load-bearing block have an attractive relationship. The fourth magnetic block is fixedly connected to the side of the U-shaped rod away from the third magnetic block, and the fourth magnetic block also has an attractive relationship with the load-bearing block.

3. The sand-controlling, throttling, and well-killing manifold according to claim 1, characterized in that: The four-way pipe is equipped with a drainage mechanism, which is used to drain and discharge excessive media accumulated inside the four-way pipe. The venting mechanism includes a retention pipe, and a pressure gauge is fixedly installed on the top of the retention pipe. The pressure gauge is used to detect the pressure of the four-way pipe when it is under high pressure.

4. A sand-controlling, throttling, well-killing manifold according to claim 3, characterized in that: The stagnation tube has a top plate inside, a connecting rod is fixedly connected to the bottom of the top plate, and a base plate is fixedly connected to the bottom end of the connecting rod. The assembly consisting of the top plate, the connecting rod, and the base plate is used for sealing the top of the four-way tube. When the pressure inside the four-way pipe increases, the assembly consisting of the top plate, the connecting rod, and the base plate moves upward, the medium enters the retention pipe, and the pressure gauge performs pressure detection processing.

5. A sand-controlling, throttling, well-killing manifold according to claim 1, characterized in that: A vertical shaft is fixedly connected inside the four-way tube. A sleeve is rotatably mounted on the outside of the vertical shaft. A return spring is fixedly connected to the outside of the sleeve. The return spring is used to reset the sleeve. The sleeve plate is internally fixedly connected to a partition plate, and is slidably fitted with a plate.

6. A sand-controlling, throttling, well-killing manifold according to claim 5, characterized in that: The partition is used to limit the position of the insert. A first magnetic block is fixedly connected to the side of the partition away from the vertical axis, and a second magnetic block is fixedly connected to the end of the insert near the first magnetic block. The first magnetic block and the second magnetic block have a repulsive relationship.

7. A sand-controlling, throttling, well-killing manifold according to claim 6, characterized in that: The end of the insert away from the sleeve plate is squeezed and adapted to the pipe inside the four-way pipe. A magnetic shielding sheet is fixedly connected to the end of the insert near the partition plate. The end of the magnetic shielding sheet away from the insert plate is fixedly connected to the partition plate. The magnetic shielding sheet is flexible.

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