Ultrahigh-pressure throttling kill manifold

Abstract

The invention relates to the technical field of petroleum well manifolds, in particular to an ultrahigh-pressure throttling kill manifold. Comprising an oil well main pipe, the oil well main pipe is communicated with an automatic pressure regulator, the automatic pressure regulator is fixed and communicated with a backflow pipeline, and the backflow pipeline is communicated with and arranged at the tail end of the oil well main pipe; the upper end of the oil well main pipe is fixed and communicated with an auxiliary material adding pipeline for adding auxiliary raw materials; the upper and lower ends of the oil well main pipe are respectively fixed and communicated with an upper circulating deslagging pipe and a lower circulating deslagging pipe for deslagging; the method has the beneficial effects that the problems that the method cannot be applied to a wellhead pipeline with unstable internal pressure and cannot be adaptively adjusted aiming at an unstable wellhead pressure pipeline are solved by using real-time circulating hedging.

Description

Technical Field

[0001] The present invention relates to the technical field of oil well manifolds, and more specifically to an ultra-high pressure throttle kill manifold. Background Art

[0002] A manifold is an assembly formed by the intersection of multiple pipes; the manifold includes gate valves, pipelines, pipe fittings, pressure gauges, and accessories such as electronic sensing and hydraulic control systems; in existing manifolds, a throttle valve (such as an adjustable throttle valve or a fixed orifice) is usually used to limit the cross-sectional area of the fluid passage, reduce the flow rate of high-pressure fluids, thereby controlling the wellhead backpressure and preventing blowouts or out-of-control formation pressures; similar to a kill manifold for preventing blowouts in oil wells with the patent number CN202310318183.0, which relates to the technical field of oil well manifolds, and includes a mounting plate, a blowout prevention kill manifold body, and a driving buffer mechanism. A bracket is fixedly arranged on the mounting plate, the blowout prevention kill manifold body is arranged on the bracket, and the driving buffer mechanism is located below the mounting plate. The driving buffer mechanism can switch between a driving state and a buffer state. In the driving state, the driving buffer mechanism can drive the mounting plate to move up and down. In the buffer state, the driving buffer mechanism can buffer the up and down vibrations of the mounting plate. This invention combines the lifting structure and the buffer structure into one, simplifies the complexity of independently setting two sets of structures in the prior art, and the spring moves up and down synchronously during the lifting drive. When adjusted to the appropriate height, directly loosen the locking sleeve to make the spring reset, and then it can be switched to the buffer state, and the operation is more simple and convenient; however, this technical solution cannot be applied to the wellhead pipeline with unstable internal pipeline pressure and cannot adaptively adjust to the unstable wellhead pressure pipeline. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the problems in the prior art that it cannot be applied to the wellhead pipeline with unstable internal pipeline pressure by using real-time cyclic hedging, and cannot adaptively adjust to the unstable wellhead pressure pipeline.

[0004] To this end, the technical solution adopted is that an ultra-high pressure throttle kill manifold of the present invention includes an oil well main pipe, an automatic voltage regulator is connected and arranged on the oil well main pipe, the automatic voltage regulator is fixedly connected to a return pipeline, and the return pipeline is connected and arranged at the tail end of the oil well main pipe; an auxiliary material adding pipeline for adding auxiliary materials is fixedly connected to the upper end of the oil well main pipe; an upper circulation slag removal pipe and a lower circulation slag removal pipe for slag removal are fixedly connected to the upper and lower ends of the oil well main pipe respectively.

[0005] Preferably, a detection joint, an upper circulation joint, a lower circulation joint, and an adding joint are connected and arranged on the oil well main pipe, and sealing ring grooves and sealing rings are arranged on the detection joint, the upper circulation joint, the lower circulation joint, and the adding joint.

[0006] Preferably, the main oil well pipe is fixed on the fixed base through a support rod, and a plurality of support rods are arranged on the fixed base for supporting the reflux pipeline, the auxiliary material adding pipeline, the upper circulation slag removal pipe and the lower circulation slag removal pipe; a slag removal recovery floor drain is arranged on the fixed base.

[0007] Preferably, the automatic voltage regulator includes a voltage regulating pipe seat, a voltage regulating joint and a side spring frame. The voltage regulating pipe seat is fixed and communicated with the main oil well pipe. A voltage regulating joint and a side spring frame are respectively communicated at both ends of the voltage regulating pipe seat. The voltage regulating joint is hermetically connected to the reflux pipeline, and a counteracting spring is arranged in the side spring frame.

[0008] Preferably, a center seat is horizontally and slidably arranged in the voltage regulating pipe seat. Side sealing rubber rings and counteracting sealing rubber rings are respectively sleeved at both ends of the center seat for hermetically sliding connection at both ends of the voltage regulating pipe seat; the counteracting spring is arranged between the center seat and the side spring frame; the counteracting spring is sleeved on a spring limiting shaft, and the spring limiting shaft is fixed at one end of the center seat.

[0009] Preferably, the counteracting sealing rubber ring is sleeved on the center seat counteracting retaining ring for counteracting the liquid in the voltage regulating joint.

[0010] Preferably, inner arc-shaped recovery grooves are arranged at both the upper and lower ends of the center of the center seat, and the two inner arc-shaped recovery grooves are communicated through a plurality of inner mutual-top spring grooves; a voltage regulating top platform is inserted in the inner arc-shaped recovery groove for blocking the pipeline flow;

[0011] The voltage regulating top platform includes an upper voltage regulating arc-shaped top plate, a lower voltage regulating arc-shaped top plate and a mutual-top spring. The upper voltage regulating arc-shaped top plate and the lower voltage regulating arc-shaped top plate are slidably inserted into each other, and a plurality of uniformly distributed mutual-top springs are sleeved between the upper voltage regulating arc-shaped top plate and the lower voltage regulating arc-shaped top plate; the voltage regulating arc-shaped top plate and the lower voltage regulating arc-shaped top plate are respectively slidably inserted into the two inner arc-shaped recovery grooves.

[0012] Preferably, both ends of the center seat in the flowing direction in the main oil well pipe are conical.

[0013] Preferably, the auxiliary material adding pipeline includes an auxiliary material adding pipe, a branch pipe and a temporary auxiliary liquid adding pipe. A branch pipe is communicated on the auxiliary material adding pipe, and a temporary auxiliary liquid adding pipe is arranged on the branch pipe; a plurality of valves are arranged on both the auxiliary material adding pipe and the branch pipe.

[0014] Preferably, detection meters are hermetically connected to the detection joints; backwashing slag removers are communicated and arranged on both the upper circulation joint and the lower circulation joint. A plurality of filter meshes are arranged in the pipeline in the backwashing slag remover, and a backwashing pipeline is arranged on the backwashing slag remover; a plurality of valves are arranged on the reflux pipeline, the upper circulation joint and the lower circulation joint.

[0015] Other features and advantages of the present invention will be set forth in the following description, and in part will be obvious from the description, or may be learned by practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the structure particularly pointed out in this application document.

[0016] The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments. Description of the Drawings

[0017] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0018] Figure 1 is a schematic structural diagram of the first direction of the whole of the present invention;

[0019] Figure 2 is a schematic structural diagram of the second direction of the whole of the present invention;

[0020] Figure 3 is a schematic structural diagram of the main well pipe of the present invention;

[0021] Figure 4 is a schematic structural diagram of the connection structure of the reflux pipeline of the present invention;

[0022] Figure 5 is a schematic structural diagram of the automatic voltage regulator of the present invention;

[0023] Figure 6 is a schematic internal structure diagram of the automatic voltage regulator of the present invention Figure 1 ;

[0024] Figure 7 is a schematic internal structure diagram of the automatic voltage regulator of the present invention Figure 2 ;

[0025] Figure 8 is a schematic structural diagram of the voltage regulating top platform of the present invention;

[0026] Figure 9 is a schematic structural diagram of the auxiliary material adding pipeline of the present invention;

[0027] Figure 10 is a schematic structural diagram of the circulating slag removal of the present invention.

[0028] In the figure: oil well main pipe 1, fixed base 2, automatic voltage regulator 3, return pipeline 4, auxiliary material addition pipeline 5, upper circulation slag removal pipe 6, lower circulation slag removal pipe 7, slag removal recovery floor drain 8, detection joint 9, upper circulation joint 10, lower circulation joint 11, addition joint 12, voltage regulation pipe seat 13, voltage regulation joint 14, side spring frame 15, counterflush spring 16, center seat 17, spring limit shaft 18, side sealing rubber ring 19, counterflush sealing rubber ring 20, voltage regulation top platform 21, inner arc recovery groove 22, inner mutual top spring groove 23, upper voltage regulation arc top plate 24, lower voltage regulation arc top plate 25, mutual top spring 26, auxiliary material addition pipe 27, branch pipe 28, temporary auxiliary liquid addition pipe 29, detection table 30, backflush slag remover 31. Detailed implementation manner

[0029] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0030] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "middle", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "plurality" is two or more, unless otherwise specifically defined.

[0031] In addition, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0032] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0033] Example 1:

[0034] As Figure 1 and Figure 2 shown, a super-high-pressure throttling and killing well manifold includes an oil well main pipe 1. An automatic pressure regulator 3 is connected and provided on the oil well main pipe 1. The automatic pressure regulator 3 is fixed and connected to a return pipeline 4. The return pipeline 4 is connected and provided at the tail end of the oil well main pipe 1; an auxiliary material adding pipeline 5 for adding auxiliary raw materials is fixed and connected to the upper end of the oil well main pipe 1; an upper circulating slag removal pipe 6 and a lower circulating slag removal pipe 7 for slag removal are respectively fixed and connected to the upper and lower ends of the oil well main pipe 1.

[0035] The working principle and beneficial effects of this embodiment are as follows: The oil well main pipe 1 is hermetically connected and used on the oilfield pipeline for extraction and transportation; an automatic pressure regulator 3 is connected and provided on the oil well main pipe 1, and at the same time, the automatic pressure regulator 3 is fixed and connected to the return pipeline 4, so that the liquid under the same pressure flows back into the automatic pressure regulator 3 through the return pipeline 4, thereby driving the automatic pressure regulator 3 to adaptively match and regulate the flow rate of the liquid flowing in the oil well main pipe 1. When the pressure is stable, the automatic pressure regulator 3 is stable. When the pressure suddenly becomes larger, the automatic pressure regulator 3 will increase the blocking area to reduce the internal pressure; when the pressure suddenly becomes smaller, the automatic pressure regulator 3 will reduce the blocking area to increase the internal flow pressure; thus realizing adaptive adaptation for use; an auxiliary material adding pipeline 5 for adding auxiliary raw materials is fixed and connected to the upper end of the oil well main pipe 1; viscous agents or diluents and other auxiliary liquid raw materials are added into the oil well main pipe 1 through the auxiliary material adding pipeline 5; the upper circulating slag removal pipe 6 and the lower circulating slag removal pipe 7 for slag removal are respectively fixed and connected to the upper and lower ends of the oil well main pipe 1, thereby isolating and discharging some solid-phase impurities that appear inside during the rotation process.

[0036] Example 2:

[0037] As Figure 1 — Figure 10As shown in the figure, there is a super-high pressure throttle and kill manifold. A detection joint 9, an upper circulation joint 10, a lower circulation joint 11, and an additive joint 12 are connected to the main oil well pipe 1. Sealing ring grooves and sealing rings are provided on the detection joint 9, the upper circulation joint 10, the lower circulation joint 11, and the additive joint 12.

[0038] The working principle and beneficial effects of this embodiment are as follows: Multiple detection joints 9 are used to connect the detection table 30, and the detection table 30 includes detection instruments such as pressure gauges and flow meters; the upper circulation joint 10 and the lower circulation joint 11 are used to connect the upper circulation slag removal pipe 6 and the lower circulation slag removal pipe 7; the additive joint 12 is used to connect the auxiliary material addition pipeline 5.

[0039] Embodiment 3:

[0040] As Figure 1 — Figure 10 As shown in the figure, there is a super-high pressure throttle and kill manifold. The main oil well pipe 1 is fixed on the fixed base 2 through support rods. Multiple support rods are provided on the fixed base 2 to support the return pipeline 4, the auxiliary material addition pipeline 5, the upper circulation slag removal pipe 6, and the lower circulation slag removal pipe 7; a slag removal recovery floor drain 8 is provided on the fixed base 2.

[0041] The working principle and beneficial effects of this embodiment are as follows: The main oil well pipe 1 is fixed on the fixed base 2 through support rods, which is used to stably fix it at a specified height for connecting pipeline transportation; multiple support rods are provided on the fixed base 2 to support the return pipeline 4, the auxiliary material addition pipeline 5, the upper circulation slag removal pipe 6, and the lower circulation slag removal pipe 7, all of which are used to stably transport the pipelines to prevent the connection at the joint from being unstable due to their own weight; a slag removal recovery floor drain 8 is provided on the fixed base 2, which is used to control the valve to discharge the collected and isolated solid impurities.

[0042] Embodiment 4:

[0043] As Figure 1 — Figure 10 As shown in the figure, there is a super-high pressure throttle and kill manifold. The automatic voltage regulator 3 includes a voltage regulating pipe seat 13, a voltage regulating joint 14, and a side spring frame 15. The voltage regulating pipe seat 13 is fixed and connected to the main oil well pipe 1. A voltage regulating joint 14 and a side spring frame 15 are respectively connected to both ends of the voltage regulating pipe seat 13. The voltage regulating joint 14 is hermetically connected to the return pipeline 4, and a counteracting spring 16 is provided inside the side spring frame 15.

[0044] The working principle and beneficial effects of this embodiment are as follows: The pressure regulating pipe seat 13 is fixed and connected to the main oil well pipe 1, and directly acts on the main oil well pipe 1 to facilitate the direct regulation of the high-pressure flowing oil in the main oil well pipe 1; a pressure regulating joint 14 and a side spring frame 15 are respectively connected and communicated at both ends of the pressure regulating pipe seat 13. The pressure regulating joint 14 is hermetically connected to the return pipe 4 to guide the pressurized return liquid and provide kinetic energy for the self-adaptive regulation in the pressure regulating pipe seat 13; a counteracting spring 16 is arranged in the side spring frame 15; the counteracting spring 16 is used to counteract and regulate the pressurized return liquid. According to the usage conditions of different pressures, counteracting springs 16 with different degrees of compression are selected for use; furthermore, different pressure spaces are determined, and counteracting springs 16 with different pressure degrees are selected for use.

[0045] Embodiment 5:

[0046] As Figure 1 — Figure 10 As shown in the figure, for an ultra-high pressure throttle kill manifold, a center seat 17 is horizontally and slidably limited in the pressure regulating pipe seat 13. Side sealing rubber rings 19 and counteracting sealing rubber rings 20 are respectively sleeved at both ends of the center seat 17 for hermetically and slidably connecting to both ends of the pressure regulating pipe seat 13; the counteracting spring 16 is arranged between the center seat 17 and the side spring frame 15; the counteracting spring 16 is sleeved on a spring limiting shaft 18, and the spring limiting shaft 18 is fixed at one end of the center seat 17.

[0047] The working principle and beneficial effects of this embodiment are as follows: A center seat 17 is horizontally and slidably limited in the pressure regulating pipe seat 13. The pressure regulating pipe seat 13 partially blocks the liquid flowing in the main oil well pipe 1 and transports it separately;

[0048] Side sealing rubber rings 19 and counteracting sealing rubber rings 20 are respectively sleeved at both ends of the center seat 17 for hermetically and slidably connecting to both ends of the pressure regulating pipe seat 13 for hermetically pressing and counteracting use; the counteracting spring 16 is arranged between the center seat 17 and the side spring frame 15 to counteract the pressure of the liquid flowing back in the return pipe 4 in the pressure regulating joint 14 and realize the reciprocating sliding propulsion of the center seat 17 with different pressure degrees; the counteracting spring 16 is sleeved on the spring limiting shaft 18, and the spring limiting shaft 18 is fixed at one end of the center seat 17. The spring limiting shaft 18 is used to limit the deformation of the counteracting spring 16 to prevent it from shifting during the counteracting top compression and release process.

[0049] Embodiment 6:

[0050] As Figure 1 — Figure 10 As shown in the figure, for an ultra-high pressure throttle kill manifold, the counteracting sealing rubber ring 20 is sleeved on the counteracting retaining ring of the center seat 17 to counteract the liquid in the pressure regulating joint 14.

[0051] The working principle and beneficial effects of this embodiment are as follows: The 20 pairs of counterflush sealing rubber rings are sleeved on the counterflush retaining rings of the central seat 17. The liquid flowing back through the return pipe 4 presses against and tightens the central seat 17 and its counterflush retaining rings inside the counterflush pressure regulating joint 14. After the pressure is greater than the pressure applied by the counterflush spring 16, the central seat 17 displaces inward. The 20 pairs of counterflush sealing rubber rings are sleeved on the counterflush retaining rings of the central seat 17 to block and seal, preventing leakage.

[0052] Embodiment 7:

[0053] As Figure 1 — Figure 10 As shown, for an ultra-high pressure throttling and kill manifold, inner arc-shaped recovery grooves 22 are provided at both the upper and lower ends of the center of the central seat 17. The two inner arc-shaped recovery grooves 22 are connected by a plurality of inner mutual pressing spring grooves 23; a pressure regulating top platform 21 is inserted into the inner arc-shaped recovery groove 22 to block the pipeline flow.

[0054] The pressure regulating top platform 21 includes an upper pressure regulating arc-shaped top plate 24, a lower pressure regulating arc-shaped top plate 25, and mutual pressing springs 26. The upper pressure regulating arc-shaped top plate 24 and the lower pressure regulating arc-shaped top plate 25 are slidably inserted into each other, and a plurality of evenly distributed mutual pressing springs 26 are sleeved between the upper pressure regulating arc-shaped top plate 24 and the lower pressure regulating arc-shaped top plate 25; the upper pressure regulating arc-shaped top plate 24 and the lower pressure regulating arc-shaped top plate 25 are respectively slidably inserted into the two inner arc-shaped recovery grooves 22.

[0055] The working principle and beneficial effects of this embodiment are as follows: Inner arc-shaped recovery grooves 22 are provided at both the upper and lower ends of the center of the central seat 17. The two inner arc-shaped recovery grooves 22 are connected by a plurality of inner mutual pressing spring grooves 23; the upper pressure regulating arc-shaped top plate 24 and the lower pressure regulating arc-shaped top plate 25 of the pressure regulating top platform 21 are inserted into the two inner arc-shaped recovery grooves 22. When the central seat 17 is pushed laterally by the counterflush and is against the inner walls on both sides of the pressure regulating pipe seat 13, the upper pressure regulating arc-shaped top plate 24 and the lower pressure regulating arc-shaped top plate 25 are symmetrically squeezed and contract inward, and accordingly the area blocking the oil flowing in the main oil well pipe 1 becomes smaller, thereby increasing the flow rate in the pipeline and the corresponding pressure. When the central seat 17 is pushed laterally by the counterflush and is towards the pipe center of the pressure regulating pipe seat 13 and the main oil well pipe 1, the upper pressure regulating arc-shaped top plate 24 and the lower pressure regulating arc-shaped top plate 25 are affected by the acting force of the plurality of mutual pressing springs 26 between them and extend outward. Due to the characteristics of their arc structures, they are squeezed by the inner wall of the main oil well pipe 1, and accordingly the area blocking the oil flowing in the main oil well pipe 1 becomes larger, thereby reducing the flow rate in the pipeline.

[0056] A plurality of evenly distributed mutual pressing springs 26 are sleeved between the upper pressure regulating arc-shaped top plate 24 and the lower pressure regulating arc-shaped top plate 25; the upper pressure regulating arc-shaped top plate 24 and the lower pressure regulating arc-shaped top plate 25 are respectively slidably inserted into the two inner arc-shaped recovery grooves 22 to limit the displacement of the upper pressure regulating arc-shaped top plate 24 and the lower pressure regulating arc-shaped top plate 25.

[0057] Example 8:

[0058] As Figure 1 — Figure 10 shown, a super high pressure throttle and kill manifold, both ends of the central seat 17 in the flow direction in the main oil well pipe 1 are conical.

[0059] The working principle and beneficial effects of this embodiment are: both ends of the central seat 17 in the flow direction in the main oil well pipe 1 are conical, which helps to reduce the pressure of the liquid flowing in the pipeline on the impact and extrusion of the central seat 17, enabling it to be shunted while avoiding affecting the counter-flush adjustment on both sides of the central seat 17.

[0060] Example 9:

[0061] As Figure 1 — Figure 10 shown, a super high pressure throttle and kill manifold, the auxiliary material adding pipeline 5 includes an auxiliary material adding pipe 27, a branch pipe 28 and a temporary auxiliary liquid adding pipe 29. A branch pipe 28 is communicatively connected to the auxiliary material adding pipe 27, and a temporary auxiliary liquid adding pipe 29 is provided on the branch pipe 28; a plurality of valves are provided on both the auxiliary material adding pipe 27 and the branch pipe 28.

[0062] The working principle and beneficial effects of this embodiment are: a branch pipe 28 is communicatively connected to the auxiliary material adding pipe 27, and a temporary auxiliary liquid adding pipe 29 is provided on the branch pipe 28; by controlling the valves, it is convenient to add various auxiliary liquids to be temporarily added into the temporary auxiliary liquid adding pipe 29, and after it is closed, the switch is opened to flow into the auxiliary material adding pipe 27 and the main oil well pipe 1; a plurality of valves are provided on both the auxiliary material adding pipe 27 and the branch pipe 28, which is convenient for controlling the adjustment of the added raw materials.

[0063] Example 10:

[0064] As Figure 1 — Figure 10 shown, a super high pressure throttle and kill manifold, a detection gauge 30 is hermetically connected to the detection joint 9; a backwashing slag remover 31 is communicatively connected and provided on both the upper circulation joint 10 and the lower circulation joint 11. A plurality of filter meshes are provided in the backwashing slag remover 31 inside the pipeline, and a backwashing pipeline is provided on the backwashing slag remover 31; a plurality of valves are provided on both the return pipeline 4, the upper circulation joint 10 and the lower circulation joint 11.

[0065] The working principle and beneficial effects of this embodiment are as follows: Detection meters 30 are hermetically connected to the detection connectors 9 for observing internal data; backwashing slag removers 31 are connected and provided on both the upper circulation connector 10 and the lower circulation connector 11. Multiple filters are provided in the backwashing slag remover 31 in the pipeline, so as to screen the solid-phase impurities in the circulating liquid multiple times; finally, through the control valve, corresponding liquid is added to the backwashing pipeline provided on the backwashing slag remover 31, and it is discharged into the slag removal and recovery floor drain 8 through the discharge pipeline; multiple valves are provided on the reflux pipeline 4, the upper circulation connector 10 and the lower circulation connector 11, which is convenient for real-time adjustment and regulation of the pipeline use.

[0066] The above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the essence of the present invention also belong to the protection scope of the present invention.

Claims

1. An ultra-high pressure throttling and killing manifold, characterized in that: The invention comprises an oil well main pipe (1), the oil well main pipe (1) is connected to and provided with an automatic pressure regulator (3), the automatic pressure regulator (3) is fixed to and connected with a return pipe (4), the return pipe (4) is connected to and provided at the tail end of the oil well main pipe (1); an auxiliary material adding pipe (5) for adding auxiliary raw materials is fixed to and connected with the upper end of the oil well main pipe (1); an upper circulation slag removal pipe (6) and a lower circulation slag removal pipe (7) for slag removal are respectively fixed to and connected with the upper and lower ends of the oil well main pipe (1).

2. The ultra-high pressure throttling and killing manifold according to claim 1, characterized in that: The oil well main pipe (1) is connected with a detection joint (9), an upper circulation joint (10), a lower circulation joint (11) and a adding joint (12); the detection joint (9), the upper circulation joint (10), the lower circulation joint (11) and the adding joint (12) are all provided with sealing ring grooves and sealing rings.

3. The ultra-high pressure throttling and killing manifold according to claim 2, characterized in that: The oil well main pipe (1) is fixed on a fixed base (2) via support rods; a plurality of support rods are arranged on the fixed base (2) for supporting a return pipe (4), an auxiliary material adding pipe (5), an upper circulation slag removal pipe (6) and a lower circulation slag removal pipe (7); and a slag removal recovery floor drain (8) is arranged on the fixed base (2).

4. The ultra-high pressure throttling and killing manifold according to claim 1, characterized in that: The automatic pressure regulator (3) comprises a pressure regulating pipe seat (13), a pressure regulating joint (14) and a side spring frame (15); the pressure regulating pipe seat (13) is fixed to and connected to the oil well main pipe (1); the two ends of the pressure regulating pipe seat (13) are respectively connected to the pressure regulating joint (14) and the side spring frame (15); the pressure regulating joint (14) is sealed and connected to the return pipe (4); and a counter-pressure spring (16) is arranged in the side spring frame (15).

5. The ultra-high pressure throttling and killing manifold according to claim 4, characterized in that: A central seat (17) is provided in the pressure regulating pipe seat (13) for transverse limiting sliding. Side sealing rubber rings (19) and counter-sealing rubber rings (20) are respectively sleeved at two ends of the central seat (17) for sealing and sliding connection at the two ends of the pressure regulating pipe seat (13). The counter-sealing spring (16) is provided between the central seat (17) and the side spring frame (15). The counter-sealing spring (16) is sleeved on a spring limiting shaft (18), and the spring limiting shaft (18) is fixed to one end of the central seat (17).

6. The ultra-high pressure throttling and killing manifold according to claim 5, characterized in that: The offset sealing rubber ring (20) is sleeved on the offset baffle ring of the center seat (17) and is used for offsetting the liquid in the pressure regulating joint (14).

7. The ultra-high pressure throttling and killing manifold according to claim 5, characterized in that: The center seat (17) is provided with inner arc-shaped recovery grooves (22) at both upper and lower ends of the center, and the two inner arc-shaped recovery grooves (22) are connected by a plurality of inner mutually supporting spring grooves (23); a pressure regulating top platform (21) is inserted in the inner arc-shaped recovery groove (22) to block the flow of the pipeline; The pressure regulating top platform (21) comprises an upper pressure regulating arc top plate (24), a lower pressure regulating arc top plate (25) and a mutual pressing spring (26); the upper pressure regulating arc top plate (24) and the lower pressure regulating arc top plate (25) are slidably plugged into each other; a plurality of uniform mutual pressing springs (26) are sleeved between the upper pressure regulating arc top plate (24) and the lower pressure regulating arc top plate (25); the upper pressure regulating arc top plate (24) and the lower pressure regulating arc top plate (25) are respectively slidably plugged into two inner arc recovery grooves (22).

8. The ultra-high pressure throttling and killing manifold according to claim 5, characterized in that: The center seat (17) is conical at both ends in the flow direction of the oil well main pipe (1).

9. The ultra-high pressure throttling and killing manifold according to claim 1, characterized in that: The auxiliary material adding pipeline (5) comprises an auxiliary material adding pipe (27), a branch pipe (28) and a temporary auxiliary liquid adding pipe (29); the auxiliary material adding pipe (27) is connected to the branch pipe (28), and the temporary auxiliary liquid adding pipe (29) is arranged on the branch pipe (28); and a plurality of valves are arranged on the auxiliary material adding pipe (27) and the branch pipe (28).

10. The ultra-high pressure throttling and killing manifold according to claim 2, characterized in that: The detection joint (9) is sealed with a detection meter (30); the upper circulation joint (10) and the lower circulation joint (11) are connected and provided with a recoil cleaner (31), a plurality of filter screens are provided in the pipeline of the recoil cleaner (31), and a backwash pipeline is provided on the recoil cleaner (31); a plurality of valves are provided on the return pipeline (4), the upper circulation joint (10) and the lower circulation joint (11).

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