Integrated skid-mounted device of double vertical sand removers

Abstract

The utility model discloses an integrated skid-mounted device of double vertical sand removers, which relates to the technical field of shale gas sand removal and comprises a skid-mounted base, a sand remover body and a process pipeline connected with the sand remover body, a gas inlet is arranged at the upper end of the sand remover, a gas outlet is arranged at the lower end of the sand remover, and a drain outlet is arranged at the bottom of the sand remover. The two vertical sand removers are parallelly suspended on the prying base, the sand removers are provided with maintenance platforms, and the maintenance platforms are provided with ladders and guardrails; the process pipeline comprises a gas inlet pipeline and a gas outlet pipeline; one end of the gas inlet pipeline is connected with a gas inlet of a high-layer desander; the other end of the gas inlet pipeline is connected with a low prying base in parallel; one end of the gas outlet pipeline is connected with a gas outlet of the high-layer desander and the other end of the gas outlet pipeline is connected with the low prying base in parallel; one end of the blow-off pipeline is connected with a blow-off port of the high-layer desander, and the other end of the blow-off pipeline is connected with the low prying base in parallel. The desander can be used for desanding efficiently, and is high in integration level, simple to mount and easy to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of shale gas desanding, and more specifically to an integrated skid-mounted double vertical desander. Background Art

[0002] During the shale gas well mining process, after entering the high water content mining period, the sand content in the produced fluid is high. If the sand particles are deposited, it will cause blockage, wear, sand (scale) corrosion and other serious hazards to the oil and gas gathering and transportation system. Therefore, desanding is very important. In order to prevent damage, scaling and blockage of downstream equipment, the entire well flow is sent to the desander container during operation. In the desander container, separation occurs inside the cyclone separator according to centrifugal force, centripetal buoyancy and fluid resistance. Wellhead desanders usually serve multiple wells and multiple gas fields, so wellhead desanders should have a wide range of applications. Wide applicability is not only the extensiveness of functions, but also the device itself can be applied to multiple oil field sites.

[0003] In the prior art, a patent document with a patent publication number of CN110043230A provides a desander for shale gas development, which only optimizes and iterates the structure and function of the desander itself. In actual use, on-site construction workers are still required to install connecting pipes, which is difficult to install and inconvenient to carry. In addition, when a single desander is used, it is necessary to stop work for maintenance when a fault occurs, which is inefficient. Utility Model Content

[0004] In order to overcome the defects in the above-mentioned prior art, the utility model provides an integrated skid for dual vertical desanders, which integrates two vertical desanders into an overall structural design, has high integration, high efficiency, and is easy to install and carry.

[0005] In order to achieve the above objectives, the technical solution adopted by the utility model is:

[0006] An integrated skid for double vertical desanders, comprising the desanders themselves and process pipelines connected thereto, wherein the desanders are provided with an air inlet at the upper end, an air outlet at the lower end, and a sewage outlet at the bottom, and characterized in that: a skid base is also included, two vertical desanders are suspended in parallel on the skid base, an inspection platform is installed on the upper part of the desanders, and the inspection platform is provided with an escalator and a guardrail; the process pipelines comprise an air inlet pipeline, an air outlet pipeline, a sewage outlet pipeline and a venting pipeline, one end of the air inlet pipeline is connected to the air inlet of the desander at a high position, and the other end is connected to the skid base at a low position, and a gate valve, a right-angle elbow, a gate valve and a right-angle elbow are sequentially provided along the flow direction of the fluid;

[0007] One end of the air outlet pipeline is connected to the air outlet of the desander at a high position, and the other end is connected to the skid base at a low position, and gate valves and right-angle elbows are arranged in sequence along the flow direction of the fluid;

[0008] One end of the sewage discharge pipeline is connected to the sewage discharge port of the desander at a high position, and the other end is fixed in parallel to the skid base at a low position, and a right-angle elbow, a valve sleeve type sewage discharge valve and a right-angle elbow are sequentially arranged along the flow direction of the fluid;

[0009] The venting pipeline is connected to the port of the gas pipeline at a lower position away from the desander, and a safety valve and a right-angle elbow are sequentially arranged along the flow direction of the fluid.

[0010] The process pipeline also includes an inhibitor pipeline connected to the gas outlet of the desander.

[0011] Furthermore, the process pipeline also includes an auxiliary venting line connected between two gate valves on the lower incoming gas pipeline and an auxiliary incoming gas pipeline connected between the venting line and the gate valve.

[0012] Furthermore, the process pipeline also includes a protection pipeline, one end of which is connected to the gas outlet pipeline, and the other end of which is connected to the desander.

[0013] Furthermore, the process pipeline and the desander are connected via flanges.

[0014] Furthermore, a monitoring device for monitoring medium pressure and temperature is provided at the outlet of the gas outlet pipeline.

[0015] Furthermore, the vent lines of the two desanders are joined via a tee, and the sewage lines of the two desanders are joined via a tee.

[0016] Furthermore, the right-angle elbow and the tee are both forged.

[0017] Furthermore, all butt welds and fillet welds of the piping are primed by argon arc welding and covered by manual welding.

[0018] Furthermore, the skid-mounted structure adopts a multi-layer composite anti-corrosion coating of fluorocarbon paint.

[0019] Beneficial effects of the utility model:

[0020] 1. Compared with the existing technology, the double vertical desander design has significantly improved efficiency, and is also equipped with auxiliary air pipelines and inhibitor pipelines. The auxiliary pipelines can help share the workload of other desanders, and are cost-effective. The inhibitor pipelines installed at the outlet port can provide safety protection for the outlet of the medium.

[0021] 2. In the utility model, an integrated overall skid-mounted structure design and a standardized connection method are adopted, which can save installation space. Not only does it reduce the difficulty of installation, but the modular design method is also more convenient for transportation. After the project is completed, it can be moved as a whole to the next project for use, which is economical.

[0022] 3. In the utility model, a maintenance platform is arranged on the top of the pry base, including a platform, an escalator and guardrails installed around it. The pry base itself is used as a fulcrum to a large extent, and the stability is high. The present solution with the maintenance platform can protect the safety of maintenance workers to a great extent when installing and maintaining the upper part of the vertical desander. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the skid-mounted structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the process pipeline of the utility model;

[0025] Figure 3 Another schematic diagram of the process pipeline of the utility model;

[0026] Reference numerals:

[0027] 1. Desander; 2. Pry base; 3. Maintenance platform; 301. Escalator; 302. Guardrail; 4. Air supply pipeline; 5. Auxiliary air supply pipeline; 6. Vent pipeline; 7. Auxiliary vent pipeline; 8. Air outlet pipeline; 9. Drain pipeline; 10. Inhibitor pipeline; 11. Protection pipeline; 12. Monitoring device; 13. Safety valve; 14. Gate valve; 15. Sleeve type drain valve. DETAILED DESCRIPTION

[0028] The following will combine the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, characteristics and effects of the utility model. It should be noted that the skid-mounted integration of the sand removal skid is a technical solution that is relatively familiar to those skilled in the art. It can also clearly express the technical meaning of this solution by abbreviating it in some well-known places. This solution mainly has two characteristic points. The first is that the double desanders are skid-mounted and integrated and equipped with a matching maintenance platform. The second is that the smart design has special process pipelines to play the corresponding functions.

[0029] Example 1

[0030] like Figure 1~Figure 3 As shown, an integrated skid-mounted double vertical desander has a desander 1 and a skid base 2, adopts an integrated integral skid-mounted structure design, and a standardized connection method, which can save installation floor space, not only reduces the difficulty of installation, but also is convenient for transportation in a modular design method. After the project is completed, it can be moved as a whole to the next project for use, which is economical.

[0031] Two vertical desanders and their equipped process pipelines are suspended in parallel on a skid base 2. A maintenance platform 3 is provided on the upper part of the desander 1. The maintenance platform 3 is provided with an escalator 301. The escalator 301 and the maintenance platform 3 are both provided with guardrails 302. The skid is divided into a high-level and a low-level. The maintenance platform 3 supported by the skid base 2 uses the skid base 2 itself as a fulcrum to a large extent, and has high stability. Maintenance workers can climb onto the desander 1 through the escalator 301 to repair the pipeline connection. The present solution with the maintenance platform 3 can protect the safety of maintenance workers to a great extent when installing and maintaining the upper part of the vertical desander 1.

[0032] The suspended space below the desander 1 can be used to arrange the corresponding process pipelines, and the space is reasonably utilized. The desander 1 is connected to the process pipeline, which includes an incoming gas pipeline 4 connected to the gas inlet at the upper end of the desander 1, and the other end is connected to the boundary of the skid base 2. The above-mentioned incoming gas pipeline 4 is provided with a gate valve 14, a right-angle elbow, a gate valve 14 and a right-angle elbow along the flow direction of the fluid, so as to transport the upstream raw gas to be desandered at the lower position to the desander 1 at the higher position for desandering, and the pipeline at the lower position is convenient for technicians to connect The process pipeline also includes a venting pipeline 6 connected to the gas inlet end of the gas inlet pipeline 4 away from the desander 1, and a safety valve 13 and an elbow are provided on the venting pipeline 6. The process pipeline also includes an outlet pipeline 8 connected to the gas outlet at the lower end of the desander 1, and a gate valve 14 and an elbow are provided on the above-mentioned outlet pipeline 8, and a sewage pipeline 9 connected to the sewage outlet at the bottom of the desander 1, and a valve sleeve type sewage valve 15 and an elbow are provided on the above-mentioned sewage pipeline 9. The above-mentioned process pipelines can be connected in parallel to the skid base 2 through right-angle elbows.

[0033] The process pipeline is also provided with an auxiliary incoming gas pipeline 5, an auxiliary venting pipeline and an inhibitor pipeline 10, which can effectively improve the utilization rate of the double desander 1. The auxiliary incoming gas pipeline 5 is connected between the gate valve 14 and the connecting port of the incoming gas pipeline 4 and the venting pipeline 6 to receive the remaining raw gas to be desanded from the upstream. The auxiliary venting pipeline is connected between the two gate valves 14 set on the incoming gas pipeline 4, and the other end of the auxiliary venting pipeline is connected to the venting pipeline 6 through a tee. The inhibitor pipeline 10 is connected to the air inlet end of the outlet gas pipeline 8. The design of the inhibitor pipeline 10 can ensure the quality of the outlet gas medium. Compared with the prior art, the double vertical desander design has significantly improved efficiency, and is also provided with an auxiliary venting pipeline, an auxiliary air pipeline 5 and an inhibitor pipeline 10. The auxiliary air pipeline receives air from the remaining desanders, which can help share the workload of the remaining desanders. It has high cost performance and improves the utilization rate of the desander 1. The inhibitor pipeline 10 arranged at the port of the air outlet pipeline 8 can input an inhibitory medium to positively promote the desandering efficiency of the desander 1.

[0034] As an implementation method of this embodiment, the respective sewage pipelines 9 of the two desanders 1 share a sewage main pipe through a forged tee, and the respective vent pipelines 6 and auxiliary vent pipelines 7 share a vent main pipe through a forged tee. Assembling them on a vent main pipe and sewage main pipe can reduce the layout of the pipelines and reduce the complexity.

[0035] Example 2

[0036] This embodiment further elaborates on this scheme on the basis of embodiment 1. The process pipeline also includes a protection pipeline 11 and a monitoring device 12. One end of the protection pipeline 11 is connected to the gas outlet, and the other end is connected to the desander 1. A pressure gauge and a differential pressure transmitter are arranged on the protection pipeline 11. The differential pressure transmitter is electrically connected to the alarm in the station control system, and can monitor the pressure values ​​at both ends. When a certain limit is reached, the alarm will alarm the technicians, and further ensure the safety of the gas outlet medium. The monitoring device 12 is connected to the outlet end of the gas outlet pipeline 8 to monitor the pressure and temperature parameters of the gas outlet medium. When the pressure or temperature exceeds the set limit, it can be transmitted to the station control system for alarm processing. The on-site staff can also observe the monitoring device displayed on the spot on site, which is double insurance. The process pipeline can provide a certain guarantee for the functional stability of the desander skid. In addition to the process pipeline, an instrument control box is also arranged on the skid base 2, which is responsible for the power supply of the monitoring instruments and transmitters on the skid.

[0037] Example 3

[0038] This embodiment further elaborates on this solution based on the above two embodiments. As an implementation method of this embodiment, all butt welds and fillet welds of the piping are primed by argon arc welding and covered by manual welding. The fillet welds must ensure smooth transition. The skid-mounted structure adopts multi-layer composite anti-corrosion of fluorocarbon paint, and a certain dry film thickness is guaranteed. Along with this, the skid-mounted topcoat color follows the standard for easy identification. The natural gas pipeline is medium yellow, the venting pipeline is bright red, and the sewage pipeline is green.

[0039] As an implementation method of this embodiment, the process pipeline is connected to the desander 1 through a flange. The flange connection has the advantage of high resistance to corrosive gases and high sealing.

[0040] As an implementation method of this embodiment, the process pipeline connector includes a forged right-angle elbow and a forged tee, and the forged connector can ensure the stability of its quality.

[0041] The above is a specific description of the implementation methods of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalents or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. An integrated skid mounted double vertical desander, comprising a desander (1) itself and a process pipeline connected thereto, wherein the desander is provided with an air inlet at the upper end, an air outlet at the lower end, and a sewage outlet at the bottom, and characterized in that: It also comprises a skid base (2), two vertical desanders (1) are suspended in parallel on the skid base (2), an inspection platform (3) is installed on the top of the desanders (1), the inspection platform (3) is provided with an escalator (301) and a guardrail (302), and the inspection platform (3) connects the upper and lower layers of the skid; the process pipeline comprises an air inlet pipeline (4), an air outlet pipeline (8), a sewage discharge pipeline (9) and a venting pipeline (6), one end of the air inlet pipeline (4) is connected to the air inlet of the desander (1) at the upper layer, and the other end is connected to the skid base (2) at the lower layer, and the air inlet pipeline (4) is provided with a gate valve (14), a right-angle elbow, a gate valve (14) and a right-angle elbow in sequence along the flow direction of the fluid; One end of the air outlet pipeline (8) is connected to the air outlet of the upper desander (1), and the other end is connected to the skid base (2) at the bottom. The air outlet pipeline (8) is provided with a right-angle elbow, a gate valve (14) and a right-angle elbow in sequence along the flow direction of the fluid; One end of the sewage discharge pipeline (9) is connected to the sewage discharge port of the upper desander (1), and the other end is connected to the skid base (2) at the bottom. The sewage discharge pipeline (9) is provided with a right-angle elbow, a valve sleeve type sewage discharge valve (15) and a right-angle elbow in sequence along the flow direction of the fluid; The vent pipeline (6) is connected to the air inlet port of the air pipeline (4) at the bottom layer, and the vent pipeline (6) is provided with a safety valve (13) and a right-angle elbow in sequence along the flow direction of the fluid.

2. The integrated skid-mounted dual vertical desander according to claim 1, characterized in that: The process pipeline also includes an inhibitor pipeline (10) connected to the gas outlet of the desander (1).

3. The integrated skid-mounted dual vertical desander according to claim 1, characterized in that: The process pipeline further comprises an auxiliary venting pipeline and an auxiliary gas supply pipeline. The auxiliary venting pipeline is connected between two gate valves (14) on the gas supply pipeline (4) at the bottom layer. The auxiliary gas supply pipeline is connected between the connection port between the gas supply pipeline (4) and the venting pipeline (6) and the gate valve (14).

4. The integrated skid-mounted dual vertical desander according to claim 1, characterized in that: The process pipeline further comprises a protective pipeline (11), one end of the protective pipeline (11) being connected to the gas outlet of the desander (1), and the other end of the protective pipeline (11) being connected to the interior of the desander (1).

5. The integrated skid-mounted dual vertical desander according to claim 1, characterized in that: The process pipeline and the desander (1) are connected via flanges.

6. The integrated skid-mounted dual vertical desander according to claim 1, characterized in that: The outlet end of the gas outlet pipeline (8) is provided with a monitoring device (12) for monitoring the pressure and temperature of the medium.

7. The integrated skid-mounted dual vertical desander according to claim 1, characterized in that: The vent lines (6) of the two desanders (1) are joined via a tee, and the sewage lines (9) of the two desanders (1) are joined via a tee.

8. The integrated skid-mounted dual vertical desander according to claim 7, characterized in that: The right-angle elbow and the tee are both forged.

9. The integrated skid-mounted dual vertical desander according to claim 1, characterized in that: All butt welds and fillet welds of the piping are primed with argon arc welding and covered with manual welding.

10. The integrated skid-mounted dual vertical desander according to claim 1, characterized in that: The skid-mounted structure adopts multi-layer composite anti-corrosion of fluorocarbon paint.

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