Integral skid unit for oil well manifold

Abstract

The application discloses an integral skid-mounted device of an oil well manifold, and relates to the field of oil extraction equipment. In the application, each pipe fitting in the main pipeline and the liquid inlet pipe group and the instrument pipeline are all prefabricated pipelines, so that cutting and machining of the pipelines are not needed at the assembling site. When assembling, the main pipeline, the liquid inlet pipe group and the instrument pipeline and each pipe fitting in the liquid inlet pipe group are connected and installed through the clamp connectors, and the connection and assembly of the pipelines are not needed through welding. Through the prefabrication of the pipelines and the connection and assembly of the pipelines through the clamp connectors, the connection and installation of the pipelines are more convenient and fast, the preparation and assembly efficiency of the integral skid-mounted device of the oil well manifold is improved, the construction time is reduced, and the safety of the assembly of the integral skid-mounted device of the oil well manifold is improved because the cutting and welding are not needed in the assembling process.

Description

Technical Field

[0001] This invention belongs to the field of oil production equipment, and more specifically, it relates to an integrated skid-mounted device for oil well manifolds. Background Technology

[0002] Oil well manifold skids are modular devices that integrate valves, pipelines, instruments, and other equipment onto a steel skid. They are widely used in oilfield operations such as fracturing, throttling, and metering. They are also the core hub connecting the subsea production tree to the subsea pipeline, responsible for collecting, distributing, and regulating the oil and gas flow produced by the well. Currently, most oil well manifold skids are installed and fabricated on-site, requiring welding to seal adjacent pipe sections. This process is not only cumbersome and significantly reduces the efficiency of manifold assembly, but also poses safety risks due to the potential for sparks during on-site welding. Summary of the Invention

[0003] In view of the problems in the related technologies, the present invention proposes an integrated skid-mounted device for oil well manifolds to overcome the above-mentioned technical problems existing in the existing related technologies.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0005] This invention relates to an integrated skid-mounted device for an oil well manifold, comprising a manifold skid frame and multiple clamp connectors. A main pipe is installed on the manifold skid frame, and an inlet pipe assembly and an instrumentation pipe are connected to the main pipe. The main pipe, the inlet pipe assembly, and the instrumentation pipe, as well as the various pipe fittings within the inlet pipe assembly, are all connected by clamp connectors. After the inlet pipe assembly is connected and installed on the manifold skid frame, its inlet end can be connected to the oil production outlet of the wellhead.

[0006] The clamp connector includes a detachable locking assembly and two connectors. The two connectors can be fixedly installed on the ends of corresponding pipes. The detachable locking assembly can seal and lock the two connectors together. Each connector is equipped with an elastic plug that can abut and seal the connector. When the two connectors are sealed together, the elastic plug can move backward to release the seal on the connector. At the same time, when the two connectors are released from the seal, the elastic plug can also return to its original position and re-seal the connector.

[0007] Furthermore, the instrument pipeline is equipped with flange joints, and temperature transmitters and pressure regulators are sequentially connected and installed on the instrument pipeline through corresponding flange joints.

[0008] Furthermore, the inlet pipe assembly includes a tee pipe, the two ends of which are connected to the main pipe and the instrument pipe respectively via clamp connectors. A riser is connected to the top end of the tee pipe via clamp connectors. An elbow is connected to the top end of the riser via clamp connectors. A sleeved horizontal pipe is connected to one end of the elbow via clamp connectors. A tee sleeve is connected to one end of the sleeved horizontal pipe via clamp connectors. A plug is installed at one end of the tee sleeve. A positioning plate is fixedly installed at the other end of the tee sleeve.

[0009] Furthermore, a sampling tube is connected and installed on the riser, and a shut-off valve is connected and installed on the sampling tube.

[0010] Furthermore, the inner ring of the connector is provided with an internal thread, and the front end of the connector is provided with an inlet and outlet.

[0011] Furthermore, the detachable locking assembly includes two clamps and two threaded posts. The two clamps can be joined together at the joint of the two connectors to form a sleeve structure, thereby sealing and locking the joint of the two connectors.

[0012] Both ends of the two clamps are provided with connecting blocks. When the two clamps are engaged and closed, the connecting blocks at both ends are engaged and closed synchronously. The threaded post passes through the two engaged connecting blocks in sequence, and both ends of the threaded post are equipped with nuts that can abut and lock the connecting blocks.

[0013] Furthermore, the elastic plug includes a connecting frame, which is fixedly installed on the inner end of the inlet and outlet. A positioning sleeve is fixedly installed on one end of the connecting frame. A limiting post is slidably inserted into the positioning sleeve. A sealing plate is fixedly installed on one end of the limiting post. A pressure spring is fitted on the limiting post, abutting against the sealing plate and the positioning sleeve. The sealing plate can seal against the inner end of the inlet and outlet under the elastic force of the pressure spring. A push rod is fixedly installed on the outer end of the sealing plate, and one end of the push rod extends outward to the outer end of the inlet and outlet.

[0014] Furthermore, the outer ring of the connector is fixedly mounted with a truncated cone, the outer end of the truncated cone is provided with a guide cone surface, the inner ring of the clamp is provided with a cone groove that can engage with the truncated cone, and both ends of the cone groove are provided with cone surfaces.

[0015] Furthermore, a sealing ring groove is formed between the inner ring of the cone and the outer ring of the inlet / outlet, and a sealing ring is fitted into the sealing ring groove.

[0016] Furthermore, valves are installed on both the main pipeline and the inlet pipe assembly, and the surfaces of the main pipeline, the inlet pipe assembly, the instrument pipeline, and the valves are all covered with a thermal insulation layer.

[0017] The present invention has the following beneficial effects:

[0018] 1. In this invention, the main pipeline, the inlet pipe group, and the instrumentation pipeline, as well as the various pipe fittings within the inlet pipe group, are all connected and fixed by clamp connectors, eliminating the need for on-site welding. This not only makes the connection and installation between pipe fittings more convenient and faster, but also improves the preparation and assembly efficiency of the overall skid-mounted device for oil well manifolds and reduces construction time. Furthermore, since the assembly process does not require welding and does not generate sparks, it improves the safety of assembling the overall skid-mounted device for oil well manifolds.

[0019] 2. In this invention, the inlet pipe assembly is formed by connecting and assembling prefabricated pipe fittings such as tee pipes, risers, elbows, sleeved horizontal pipes, and tee sleeves with clamp connectors. The assembled inlet pipe assembly can be connected between the oil outlet of the wellhead and the main pipeline for oil and gas transportation without the need to cut and prepare the corresponding pipes on the assembly site. This not only improves the preparation and assembly efficiency of the overall skid-mounted device for oil well manifolds, but also avoids sparks generated by cutting, thereby improving the safety of the preparation and assembly of the overall skid-mounted device for oil well manifolds.

[0020] 3. The clamp connector in this invention includes a detachable locking assembly and two connectors. The two connectors can be fixedly installed on the ends of corresponding pipes. Then, the detachable locking assembly seals and locks the two connectors together, thereby enabling rapid connection and assembly of adjacent pipes. Furthermore, each connector contains an elastic plug that abuts and seals the connector. When the two connectors are sealed together, the elastic plugs abut against each other and move backward to release the seal, thus automatically allowing communication between the connectors for oil and gas transport. During equipment maintenance, when the two connectors are desealed, the elastic plugs return to their original position under their own elasticity, automatically sealing the connector and preventing oil and gas leakage, which could lead to waste and environmental pollution.

[0021] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, the drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is one of the three-dimensional structural schematic diagrams of the overall skid-mounted device for the oil well manifold of the present invention;

[0024] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the structure at point A;

[0025] Figure 3 For the present invention Figure 1 A magnified schematic diagram of the structure at point B;

[0026] Figure 4 For the present invention Figure 1 A magnified schematic diagram of the structure at point C;

[0027] Figure 5 This is the second three-dimensional structural schematic diagram of the overall skid-mounted device for the oil well manifold of the present invention;

[0028] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at point D;

[0029] Figure 7 This is the third three-dimensional structural schematic diagram of the overall skid-mounted device for the oil well manifold of the present invention;

[0030] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point E.

[0031] In the diagram: 1. Manifold skid mount; 2. Main pipe; 3. Inlet pipe assembly; 31. Tee; 32. Horizontal sleeve; 33. Sampling pipe; 34. Riser; 35. Elbow; 36. Tee sleeve; 37. Plug; 38. Positioning plate; 39. Cut-off valve; 4. Instrument piping; 41. Flange joint; 42. Temperature transmitter; 43. Pressure transmitter; 5. Clamp connector; 51. Connector; 52. Clamp; 53. Threaded post; 54. Nut; 55. Frustum; 56. Conical groove; 57. Inlet / outlet; 58. Sealing ring groove; 59. Sealing ring; 510. Internal thread; 511. Connecting frame; 512. Positioning sleeve; 513. Limiting post; 514. Sealing plate; 515. Push rod; 516. Pressure spring. Detailed Implementation

[0032] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0033] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the invention.

[0034] Example 1

[0035] Please see Figures 1-3 As shown, this invention is an integrated skid-mounted device for an oil well manifold, including a manifold skid frame 1 and multiple clamp connectors 5. A main pipe 2 is installed on the manifold skid frame 1, and an inlet pipe assembly 3 and an instrumentation pipe 4 are connected and installed on the main pipe 2. The main pipe 2, the inlet pipe assembly 3, and the instrumentation pipe 4, as well as the various pipe fittings within the inlet pipe assembly 3, are all connected by clamp connectors 5. After the inlet pipe assembly 3 is connected and installed on the manifold skid frame 1, its inlet end can connect to the oil production outlet of the wellhead. The clamp connectors 5 include... The assembly includes a detachable locking component and two connectors 51. The two connectors 51 can be fixedly installed on the ends of the corresponding pipes. The detachable locking component can seal and lock the two connectors 51. Each connector 51 is equipped with an elastic plug that can abut and seal the connector 51. When the two connectors 51 are sealed together, the elastic plugs can abut against each other and move backward to release the seal on the connectors 51. At the same time, when the two connectors 51 are released from the seal, the elastic plugs can also reset and move back to re-abut and seal the connectors 51.

[0036] Before assembling the overall skid-mounted unit for the oil well manifold, the location of the oil well outlet at the production tree is measured, and the pipe dimensions and installation positions are designed. Then, the main pipe 2, the various pipe fittings within the inlet pipe group 3, and the instrumentation pipes 4 are prefabricated in the factory, eliminating the need for on-site pipe cutting. During assembly, the main pipe 2, the inlet pipe group 3, and the instrumentation pipes 4, as well as the various pipe fittings within the inlet pipe group 3, are connected and installed using clamp connectors 5, eliminating the need for welding. This prefabrication and clamp connector assembly not only makes pipe connection and installation more convenient and faster, improving the efficiency of the overall skid-mounted unit for the oil well manifold and reducing construction time, but also enhances the safety of the overall skid-mounted unit assembly because the assembly process does not require cutting or welding and does not generate sparks.

[0037] Specifically, when assembling adjacent pipelines, the two connectors 51 are first fixedly installed on the ends of the corresponding pipelines. Then, the two connectors 51 are joined together and sealed and locked using a detachable locking assembly. This enables rapid connection and assembly of adjacent pipelines. When the two connectors 51 are joined together, the elastic plugs inside can abut against each other and move backward to release the seal on the connectors 51, thereby automatically achieving conduction between the connectors 51 to facilitate oil and gas transportation. When the pipeline needs to be disassembled for maintenance, the detachable locking assembly is released from the connection lock of the two connectors 51, and the two connectors 51 are separated. At this time, the elastic plugs can reset and move back under their own elasticity to automatically abut against and seal the connectors 51, thereby sealing the pipeline port and preventing oil and gas from leaking out of the pipeline, which would lead to oil and gas waste and environmental pollution.

[0038] Example 2

[0039] Please see Figure 1 , Figure 2 As shown, the difference between this embodiment and the above embodiment is that a flange joint 41 is provided on the instrument pipe 4, and a temperature transmitter 42 and a pressure changer 43 are sequentially connected and installed on the instrument pipe 4 through the corresponding flange joint 41.

[0040] The temperature and pressure during oil and gas transportation can be detected by temperature transmitter 42 and pressure changer 43, thereby collecting various data during oil and gas transportation to assist in the accurate transportation of oil and gas; and multiple flange joints 41 are provided, and corresponding detection and control equipment can be installed on the instrument pipeline 4 through the flange joints 41. For unused flange joints 41, the flange cover is used to seal them to prevent oil and gas leakage.

[0041] Example 3

[0042] Please see Figures 1-4 As shown, the difference between this embodiment and the above embodiment is that the liquid inlet pipe group 3 includes a three-way pipe 31. The two ends of the three-way pipe 31 are connected to the main pipe 2 and the instrument pipe 4 respectively through clamp connectors 5. The top end of the three-way pipe 31 is connected to and installed with a riser pipe 34 through clamp connectors 5. The top end of the riser pipe 34 is connected to and installed with an elbow 35 through clamp connectors 5. One end of the elbow 35 is connected to and installed with a sleeved horizontal pipe 32 through clamp connectors 5. One end of the sleeved horizontal pipe 32 is connected to and installed with a three-way sleeve 36 through clamp connectors 5. One end of the three-way sleeve 36 is installed with a plug 37. The other end of the three-way sleeve 36 is fixedly installed with a positioning plate 38.

[0043] Among them, the tee pipe 31, riser pipe 34, elbow 35, sleeved horizontal pipe 32 and tee sleeve 36 are all prefabricated pipes, so there is no need to cut and process them on the assembly site. During assembly, the tee pipe 31 is first assembled and connected to the main pipe 2 by the clamp connector 5. Then, the tee pipe 31, riser pipe 34, elbow 35, sleeved horizontal pipe 32 and tee sleeve 36 are assembled and connected in sequence by the clamp connector 5. After the liquid inlet pipe group 3 is assembled, the end of the tee sleeve 36 with the plug 37 can be connected to the oil outlet of the well tree. Then, the plug 37 is rotated off and the end of the tee sleeve 36 is connected to the oil outlet of the well tree. The positioning plate 38 at the other end of the tee sleeve 36 can be connected to the well tree support equipment by bolts, thereby locking and positioning the liquid inlet pipe group 3, improving the stability of the installation of the liquid inlet pipe group 3, and preventing the liquid inlet pipe group 3 from shaking under the oil and gas transportation pressure.

[0044] Furthermore, a sampling pipe 33 is connected and installed on the riser 34, and a shut-off valve 39 is connected and installed on the sampling pipe 33. When it is necessary to sample and test oil and gas, the shut-off valve 39 is opened so that part of the oil and gas flowing through the riser 34 can be discharged through the sampling pipe 33, thereby facilitating oil and gas sampling and testing through the sampling pipe 33 and the shut-off valve 39.

[0045] Example 4

[0046] Please see Figures 5-8 As shown, the difference between this embodiment and the above embodiment is that the inner ring of the connector 51 is provided with an internal thread 510, and the front end of the connector 51 is provided with an inlet / outlet port 57; the detachable locking assembly includes two clamps 52 and two threaded posts 53. The two clamps 52 can be joined together at the joint of the two connectors 51 to form a sleeve structure, so as to seal and lock the joint of the two connectors 51; both ends of the two clamps 52 are provided with connecting blocks. When the two clamps 52 are joined together, the connecting blocks at both ends are joined together synchronously. The threaded posts 53 pass through the two joined connecting blocks in sequence, and both ends of the threaded posts 53 are equipped with nuts 54 that can abut and lock the connecting blocks.

[0047] When assembling and connecting adjacent pipes, firstly, two connectors 51 are connected and installed on the ends of the corresponding pipes through internal threads 510. Then, the two connectors 51 are butted together. Next, two clamps 52 are butted together at the joint of the two connectors 51 to form a clamp structure. Then, threaded posts 53 are passed through the connecting blocks at the ends of the two connectors 51 in sequence, and nuts 54 are installed at both ends of the threaded posts 53 to tighten the connecting blocks. This locks the two clamps 52 together, allowing the two clamps 52 to grip the two connectors 51 tightly, thus achieving a locking connection between the two connectors 51.

[0048] Example 5

[0049] Please see Figures 5-8 As shown, the difference between this embodiment and the above embodiment is that the elastic plug includes a connecting frame 511, which is fixedly installed on the inner end of the inlet / outlet port 57. A positioning sleeve 512 is fixedly installed on one end of the connecting frame 511. A limiting post 513 is slidably inserted into the positioning sleeve 512. A sealing plate 514 is fixedly installed on one end of the limiting post 513. A pressure spring 516 is fitted on the limiting post 513 and abuts against the sealing plate 514 and the positioning sleeve 512. The sealing plate 514 can seal against the inner end of the inlet / outlet port 57 under the elastic force of the pressure spring 516. A push rod 515 is fixedly installed on the outer end of the sealing plate 514. One end of the push rod 515 extends outward to the outer end of the inlet / outlet port 57.

[0050] The connecting frame 511, positioning sleeve 512 and limiting post 513 cooperate to slide and limit the sealing plate 514, so that the sealing plate 514 can be stably installed inside the connector 51. When the two connectors 51 are connected, the push rods 515 inside the two connectors 51 abut against each other and move backward. At this time, the push rods 515 drive the sealing plate 514 to retract into the connector 51, so that the sealing plate 514 separates from the inner end of the inlet and outlet 57 and releases the seal on the inlet and outlet 57, so that the two connectors 51 can automatically conduct when connected, which facilitates the transportation of oil and gas in the pipeline.

[0051] When the pipeline needs to be disassembled and repaired, the nut 54 on the threaded post 53 is loosened, the two clamps 52 are separated and no longer tightly locked to the connector 51. Then the two connectors 51 can be separated, and at this time the push rods 515 inside the two connectors 51 no longer abut against each other. Under the elastic force of the pressure spring 516, the sealing plate 514 moves towards the inlet / outlet port 57 until the sealing plate 514 abuts against the inner end of the inlet / outlet port 57, thereby sealing the inlet / outlet port 57. In addition, through the cooperation of the sealing plate 514 and the pressure spring 516, the pipeline end can be quickly and automatically sealed when the pipeline is disassembled and disconnected, thereby preventing residual oil and gas in the pipeline from leaking out and causing oil and gas waste and environmental pollution.

[0052] Example 6

[0053] Please see Figures 1-6 As shown, the difference between this embodiment and the above embodiment is that a truncated cone 55 is fixedly installed on the outer ring of the connector 51, a guide cone surface is provided on the outer end of the truncated cone 55, and a conical groove 56 is provided on the inner ring of the clamp 52 that can engage with the truncated cone 55, and both ends of the conical groove 56 are provided with conical surfaces.

[0054] When connecting the two connectors 51, first align the top rods 515 at the ends of the two connectors 51, leaving a certain gap between them. Then, place the two clamps 52 on both sides of the connectors 51, and engage the conical grooves 56 of the inner ring of the clamps 52 with the conical frustums 55 of the outer ring of the connectors 51. Next, gradually rotate the nuts 54 at both ends of the threaded post 53, causing the two clamps 52 to gradually abut and close together. During this closing process, the clamps 52 are engaged by the conical grooves 56 at both ends of the threaded post 53. The conical surface gradually abuts the frustum 55 on the two connectors 51, thereby overcoming the pushing resistance of the push rod 515 and the pressure spring 516, and realizing the closing and docking of the two connectors 51. This makes the docking and locking process of the two connectors 51 more convenient and labor-saving. At the same time, after the two connectors 51 are locked and docked, the conical groove 56 and the frustum 55 cooperate to provide radial locking force to the connectors 51, thereby improving the tightness of the connection and installation of the connectors 51 and preventing the connectors 51 from loosening and displacing under the action of oil and gas pressure in the pipeline.

[0055] Furthermore, a sealing ring groove 58 is formed between the inner ring of the cone 55 and the outer ring of the inlet / outlet port 57. A sealing ring 59 is fitted inside the sealing ring groove 58. When the two connectors 51 are connected, the sealing ring 59 is engaged with the outer ring of the two inlet / outlet ports 57 by the abutment of the sealing ring grooves 58 at both ends, sealing the joint of the two inlet / outlet ports 57, thereby improving the sealing performance when the two connectors 51 are connected and preventing oil and gas from leaking from the joint.

[0056] Furthermore, valves are installed on both the main pipeline 2 and the liquid inlet pipe group 3. The surfaces of the main pipeline 2, the liquid inlet pipe group 3, the instrument pipeline 4, and the valves are all covered with a thermal insulation layer. The valves can control the opening and closing of the pipeline and regulate the flow rate to facilitate precise control of oil and gas transportation. The thermal insulation layer includes a wrapped heating tape with a 30mm polyurethane protective layer around the outer ring of the heating tape, thereby achieving thermal insulation and protection for the pipeline and valves.

[0057] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] The preferred embodiments of the invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. An integrated skid mounting arrangement for a Christmas tree for an oil well, comprising a Christmas tree skid mounting frame (1) and a plurality of clamp connections (5), characterized in that: The pipe rack (1) is provided with a main pipe (2), a liquid inlet pipe group (3) and an instrument pipe (4) connected to the main pipe (2), the main pipe (2), the liquid inlet pipe group (3) and the instrument pipe (4) and each pipe in the liquid inlet pipe group (3) are connected by a clamp connector (5), and the liquid inlet end of the liquid inlet pipe group (3) can be connected to the oil outlet of the Christmas tree after being connected to the pipe rack (1); The clamp connector (5) comprises a detachable locking assembly and two connecting heads (51), the two connecting heads (51) can be fixedly installed at the ends of the corresponding pipes, the detachable locking assembly can seal and lock the two connecting heads (51), the elastic plugs in the connecting heads (51) can abut and seal the connecting heads (51), and the elastic plugs can move away from each other when the two connecting heads (51) are sealed to release the sealing of the connecting heads (51), and the elastic plugs can abut and seal the connecting heads (51) again when the two connecting heads (51) are unsealed. The liquid inlet pipe group (3) comprises a tee pipe (31), the two ends of the tee pipe (31) are connected to the main pipe (2) and the instrument pipe (4) by the clamp connectors (5), the top end of the tee pipe (31) is connected to a riser pipe (34) by the clamp connector (5), the top end of the riser pipe (34) is connected to an elbow (35) by the clamp connector (5), one end of the elbow (35) is connected to a sleeve pressure horizontal pipe (32) by the clamp connector (5), one end of the sleeve pressure horizontal pipe (32) is connected to a tee sleeve pipe (36) by the clamp connector (5), one end of the tee sleeve pipe (36) is provided with a plug (37), and the other end of the tee sleeve pipe (36) is fixedly provided with a positioning disc (38).

2. An integrated skid mounted manifold for oil well tubing as claimed in claim 1, wherein: The instrument pipe (4) is provided with a flange joint (41), and a temperature transmitter (42) and a pressure transmitter (43) are sequentially connected to the instrument pipe (4) by corresponding flange joints (41).

3. An integrated skid mounted manifold for oil well tubing as defined in claim 1, characterized in that: A sampling pipe (33) is connected to the riser pipe (34), and a shut-off valve (39) is connected to the sampling pipe (33).

4. An integrated skid mounted manifold for oil well tubing as defined in claim 1, characterized by: The inner ring of the connecting head (51) is provided with an internal thread (510), and the front end of the connecting head (51) is provided with an inlet and outlet port (57).

5. An integrated skid mounting arrangement for a manifold for an oil well as claimed in claim 4, characterised in that: The detachable locking assembly comprises two clamps (52) and two threaded columns (53), the two clamps (52) are abutted and closed at the joint of the two connecting heads (51) to form a sleeve structure, and the joint of the two connecting heads (51) is sealed and locked; The two ends of the two clamps (52) are provided with connecting blocks, the connecting blocks at the two ends are synchronously abutted and closed when the two clamps (52) are abutted and closed, the threaded columns (53) sequentially penetrate the two abutted connecting blocks, and the two ends of the threaded columns (53) are provided with nuts (54) capable of abutting and locking the connecting blocks.

6. An integrated skid mounted manifold for oil well tubing as defined in claim 5, characterized in that: The elastic plug comprises a connecting frame (511) fixedly installed at the inner end of the liquid inlet / outlet (57), one end of the connecting frame (511) is fixedly installed with a positioning sleeve (512), the positioning sleeve (512) is slidably inserted with a limiting column (513), one end of the limiting column (513) is fixedly installed with a sealing plate (514), the limiting column (513) is sleeved with a pressure spring (516) abutting between the sealing plate (514) and the positioning sleeve (512), the sealing plate (514) can be sealed and abutted to the inner end of the liquid inlet / outlet (57) under the elastic force of the pressure spring (516), the outer end of the sealing plate (514) is fixedly installed with a jacking rod (515), one end of the jacking rod (515) extends to the outer end of the liquid inlet / outlet (57).

7. An integrated skid mounted manifold for oil well tubing as defined in claim 6, characterized in that: The outer ring of the connecting head (51) is fixedly installed with a conical frustum (55), the outer end of the conical frustum (55) is provided with a guide conical surface, the inner ring of the clamp (52) is provided with a conical groove (56) capable of being clamped with the conical frustum (55), and both ends of the conical groove (56) are provided with conical surfaces.

8. An integrated skid mounted manifold for oil well tubing as defined in claim 7, characterized by: The inner ring of the conical frustum (55) and the outer ring of the liquid inlet / outlet (57) are surrounded to form a sealing ring groove (58), and the sealing ring groove (58) is clamped with a sealing ring (59).

9. An integrated skid mounted manifold for oil well tubing according to any one of claims 1 to 8, characterized in that: The main pipeline (2) and the liquid inlet pipe group (3) are both installed with valves, and the main pipeline (2), the liquid inlet pipe group (3), the instrument and meter pipeline (4) and the valve surface are all coated with a heat preservation layer.

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