Conveying device and method for oil and gas field produced products

Abstract

The invention relates to a conveying device and method for oil and gas field produced products. The conveying device comprises an input manifold used for being communicated with the oil-gas field and a pressurizing mechanism communicated with the oil-gas field through the input manifold. The pressurizing mechanism comprises a first container used for containing the extract and / or the pressurized liquid, a second container identical to the first container, and a pumping assembly communicating the first container with the second container, and the pumping assembly is electrically connected with the control module. An output manifold is used to communicate a terminal processing station with the first container and the second container. Wherein the control module is configured to be capable of controlling the pumping assembly to enable the pressurized liquid to flow between the first container and the second container, so that the produced material of the oil and gas well flows into the first container or the second container through the input manifold; and the extract in the first container or the second container flows to the terminal processing station through the output manifold.

Description

[0001] Cross-references to related technologies

[0002] This application claims the priority of Chinese patent application CN202311836141.2, entitled “Gas-Liquid Mixed Transportation Device and Method for Oil and Gas Fields”, filed on December 28, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present invention relates to the technical field of fluid transportation, and in particular to a transportation device and method for oil and gas field produced materials. Background Art

[0004] The produced material obtained during the exploitation of oil and gas fields is a mixed fluid including natural gas, crude oil and water, which is generally mixed with mud and sand. In the prior art, the produced material is generally transported to the oil and gas processing terminal through pipelines for processing, so as to obtain products such as oil and natural gas that meet industry standards. In the process of transporting the produced material, it is generally necessary to use boosting equipment to increase the pressure in the pipeline so that the produced material can obtain kinetic energy for transportation.

[0005] However, existing boosting equipment can only boost the pressure of liquid phase fluid or gas phase fluid separately, and cannot meet the needs of gas-liquid mixed fluid transportation. For example, when a conventional liquid pump used to transport liquid phase fluid is used to transport produced materials, the gas components in the produced materials are easily precipitated due to the change in pressure, causing the liquid pump to have a gas lock failure, thereby affecting the normal transportation of the produced materials.

[0006] Therefore, in the prior art, a transfer station is generally built near the wellhead or in the middle of transportation to separate the natural gas and oil and water in the produced material. The separated natural gas and oil and water are then transported through different equipment and pipelines. However, the construction period of the transfer station is long, the capital investment is large, the operation and maintenance cost is high, the land is occupied, and special personnel need to be arranged to be stationed on duty. This leads to an increase in the development cycle of oil and gas fields and an increase in development costs. Summary of the invention

[0007] Based on the above-mentioned problems existing in the prior art, the present invention provides a device and method for conveying oil and gas field produced materials, which can more reliably convey the produced materials in the form of gas-liquid mixed fluid, avoid the construction of additional transfer stations, thereby shortening the development cycle of oil and gas fields and reducing development costs.

[0008] A first aspect of the present invention provides a device for conveying oil and gas field produced materials, comprising:

[0009] Input manifold, used to export produced materials from oil and gas fields;

[0010] a pressurizing mechanism connected to the oil and gas field through the input manifold, the pressurizing mechanism comprising a first container for containing the produced material and / or pressurized fluid, a second container identical to the first container, and a pumping assembly connecting the first container and the second container, the pumping assembly being electrically connected to a control module; and

[0011] an output manifold, used to connect the terminal processing station with the first container and the second container,

[0012] In which, the control module is configured to control the pumping assembly to make the pressurized fluid flow between the first container and the second container, so that the produced material of the oil and gas well flows into the first container or the second container through the input pipe manifold, and the produced material in the first container or the second container flows to the terminal processing station through the output pipe manifold.

[0013] Furthermore, the pumping assembly includes a bidirectional pump connecting the first container and the second container, which is used to pump the pressurized liquid in the first container into the second container, or to pump the pressurized liquid in the second container into the first container under the control of the control module.

[0014] Furthermore, the pumping assembly includes a first one-way pump and a second one-way pump connecting the first container and the second container, the first one-way pump being configured to pump the pressurized liquid in the first container into the second container under the control of the control module, and the second one-way pump being configured to pump the pressurized liquid in the second container into the first container.

[0015] Furthermore, the input manifold includes a first one-way valve connected to the first container, and a second one-way valve connected to the second container, the first one-way valve only allows the produced flow of the oil and gas field to flow to the first container, and the second one-way valve only allows the produced flow of the oil and gas field to flow to the second container.

[0016] Furthermore, the output manifold includes a third one-way valve connected to the first container, and the third one-way valve only allows the produced material and / or the pressurized fluid in the first container to flow to the terminal processing station, so that when the pumping component pumps the pressurized fluid in the second container into the first container, the produced material in the first container flows to the terminal processing station through the third one-way valve, and the produced material of the oil and gas field flows into the second container through the second one-way valve.

[0017] Furthermore, the output manifold includes a fourth one-way valve connected to the second container, and the fourth one-way valve only allows the produced material and / or the pressurized fluid in the second container to flow to the terminal processing station, so that when the pumping component pumps the pressurized fluid in the first container into the second container, the produced material in the second container flows to the terminal processing station through the fourth one-way valve, and the produced material of the oil and gas field flows into the first container through the first one-way valve.

[0018] Furthermore, a first liquid level gauge and a second liquid level gauge are respectively provided at predetermined positions of the first container and the second container for monitoring the liquid levels of the pressurized liquid in the first container and the second container.

[0019] Furthermore, the control module is electrically connected to the first liquid level gauge and the second liquid level gauge, and the control module controls the pumping component to pump the pressurized liquid in the second container into the first container when the first liquid level gauge monitors the liquid level of the pressurized liquid in the first container, or controls the pumping component to pump the pressurized liquid in the first container into the second container when the second liquid level gauge monitors the liquid level of the pressurized liquid in the second container.

[0020] Furthermore, the conveying device also includes a collecting manifold, which includes a first valve and a second valve respectively connected to the bottom of the first container and the second container, and is used to convey mud, sand and dirt generated when cleaning the first container and the second container to the collecting container.

[0021] A second aspect of the present invention provides a method for conveying oil and gas field produced materials, which is carried out using any of the conveying devices described above, and comprises the following steps:

[0022] Step S1: injecting pressurized liquid into the first container and the second container;

[0023] Step S2: pumping the pressurized liquid in the first container into the second container so that the produced material of the oil and gas field enters the first container until the liquid level of the pressurized liquid in the first container drops to a predetermined position;

[0024] Step S3: pumping the pressurized liquid in the second container into the first container, so that the produced material of the oil and gas field enters the second container, until the liquid level of the pressurized liquid in the second container drops to a predetermined position;

[0025] Step S4: repeating steps S2 and S3, so that the produced material in the first container or the second container is transported to the terminal processing station through the output manifold.

[0026] The beneficial effects of the present invention are as follows: the present invention provides a device for conveying produced materials from oil and gas fields, comprising an input manifold for connecting to the oil and gas fields, and a pressurizing mechanism for connecting to the oil and gas fields through the input manifold. The pressurizing mechanism comprises a first container for containing the produced materials and / or pressurized liquid, a second container identical to the first container, and a pumping assembly for connecting the first container and the second container, wherein the pumping assembly is electrically connected to a control module. The output manifold is used to connect a terminal processing station with the first container and the second container. The control module is configured to control the pumping assembly to allow the pressurized liquid to flow between the first container and the second container, so that the produced materials from the oil and gas wells flow into the first container or the second container through the input manifold, and the produced materials in the first container or the second container flow to the terminal processing station through the output manifold. In this way, the pumping assembly can be prevented from directly pumping the produced materials from the oil and gas fields, so that the natural gas precipitated from the produced materials will not cause a gas lock failure in the pumping assembly, thereby achieving the purpose of reliable transportation of the produced materials from the oil and gas fields. This also avoids the construction of additional transfer stations, thereby shortening the development cycle of oil and gas fields and reducing the development costs of oil and gas fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 Shown is a schematic diagram of the manifold structure of a device for conveying oil and gas field produced materials according to the first embodiment.

[0029] Figure 2 Shown Figure 1 The diagram shown is a schematic diagram of the manifold structure of the conveying device in one state.

[0030] Figure 3 Shown Figure 1 The diagram shown is a schematic diagram of the manifold structure of the conveying device in another state.

[0031] Figure 4 The figure shows a schematic diagram of the manifold structure of a device for conveying oil and gas field produced materials according to the second embodiment.

[0032] Figure 5 Shown Figure 4 The diagram shown is a schematic diagram of the manifold structure of the conveying device in one state.

[0033] Figure 6 Shown Figure 4 The diagram shown is a schematic diagram of the manifold structure of the conveying device in another state.

[0034] In the figures, the reference numerals are: 100, a conveying device; 10, an input manifold; 11, a first one-way valve; 12, a second one-way valve;

[0035] 20. Pressurizing mechanism; 21. First container; 211. Inspection port; 212. Injection pipe; 22. Second container; 23. Pumping assembly; 231. Bidirectional pump; 232. First unidirectional pump; 233. Second unidirectional pump; 24. Control module; 241. First liquid level gauge; 242. Second liquid level gauge;

[0036] 30. Output manifold; 31. Third one-way valve; 32. Fourth one-way valve;

[0037] 40. Collection manifold; 41. First valve; 42. Second valve; 43. Collection container; 431. Third valve; 44. First bypass pipe; 441. Fifth check valve; 45. Second bypass pipe;

[0038] 200. Oil and gas fields; 300. Terminal processing station. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is now described in detail in conjunction with the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, so it only shows the composition related to the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] refer to Figure 1 and Figure 4 As shown, a conveying device 100 for oil and gas field produced materials provided by the present invention includes a pressurizing mechanism 20 for pressurizing and conveying the produced materials, an input manifold 10 for connecting the pressurizing mechanism 20 and the oil and gas field 200, and an output manifold 30 for connecting the pressurizing mechanism 20 and the terminal processing station 300. The produced materials are mixed fluids extracted from the oil and gas field 200, including natural gas, crude oil, water and sediment. The pressurizing mechanism 20 is configured to pressurize the produced materials conveyed by the input manifold 10 and then convey the produced materials to the terminal processing station 300 through the output manifold 30, so that the terminal processing station 300 can obtain finished petroleum and natural gas products that meet industrial standards after processing the produced materials. The pressurizing mechanism 20 will not cause gas lock failure due to the natural gas precipitated from the produced materials, thereby effectively and reliably pressurizing and conveying the produced materials. In this way, there is no need to build an additional transfer station, thereby shortening the development cycle of oil and gas fields and reducing the development cost of oil and gas fields.

[0041] Combination Figure 1As shown, in some embodiments, the pressurizing mechanism 20 includes a first container 21, a second container 22 having the same structure as and connected to the first container 21, and a pumping assembly 23 disposed between the first container 21 and the second container 22. The first container 21 and the second container 22 are connected in parallel to the oil and gas field 200 through the input manifold 10, and are also connected in parallel to the terminal processing station 300 through the output manifold 30. The first container 21 and / or the second container 22 are filled with pressurized liquid. The pumping assembly 23 is configured to pump the pressurized liquid from the first container 21 to the second container 22, or to pump the pressurized liquid from the second container 22 to the first container 21.

[0042] In some embodiments, when the pumping assembly 23 pumps the pressurized liquid from the first container 21 to the second container 22, the produced material from the oil and gas field 200 will enter the first container 21 through the input manifold 10, and the produced material in the second container 22 will be transported to the terminal processing station 300 through the output manifold 30 under the action of the pressurized liquid. When the pumping assembly 23 pumps the pressurized liquid from the second container 22 to the first container 21, the produced material from the oil and gas field 200 will enter the second container 22 through the input manifold 10, and the produced material in the first container 21 will be transported to the terminal processing station 300 through the output manifold 30 under the action of the pressurized liquid. In this way, the pumping assembly 23 is prevented from directly pumping the produced material by pumping the pressurized liquid, so that the pumping assembly 23 will not have a gas lock failure due to the natural gas precipitated from the produced material.

[0043] Combination Figure 1 As shown, in some embodiments, the first container 21 is connected to the oil and gas field 200 through the first one-way valve 11 of the input manifold 10, and the second container 22 is connected to the oil and gas field 200 through the second one-way valve 12 of the input manifold 10. The pipeline where the first one-way valve 11 is located is connected in parallel with the pipeline where the second one-way valve 12 is located. The first one-way valve 11 only allows the produced material from the oil and gas field 200 to flow into the first container 21, and the second one-way valve 12 only allows the produced material from the oil and gas field 200 to flow into the second container 22. The first container 21 is also connected to the terminal processing station 300 through the third one-way valve 31 of the output manifold 30, and the second container 22 is also connected to the terminal processing station 300 through the fourth one-way valve 32 of the output manifold 30. The pipeline where the third one-way valve 31 is located is connected in parallel with the pipeline where the fourth one-way valve 32 is located. The third one-way valve 31 only allows the produced in the first container 21 to flow to the terminal processing station 300 , and the fourth one-way valve 32 only allows the produced in the second container 22 to flow to the terminal processing station 300 .

[0044] In some of the embodiments, both the first container 21 and the second container 22 are provided with inspection ports 211 to facilitate technicians to enter the first container 21 and the second container 22 for inspection.

[0045] In some embodiments, the first container 21 and the second container 22 are further provided with an injection pipe 212 for injecting the pressurized liquid into the first container 21 and the second container 22. The pressurized liquid can be other liquids or solutions such as water that are not miscible with crude oil.

[0046] Recombination Figure 1 As shown, in some embodiments, the pressurizing mechanism 20 further includes a control module 24 electrically connected to the pumping assembly 23, and a first liquid level gauge 241 and a second liquid level gauge 242 electrically connected to the control module 24. The first liquid level gauge 241 and the second liquid level gauge 242 are respectively installed at predetermined positions of the first container 21 and the second container 22, and are used to monitor the liquid levels of the pressurized liquid in the first container 21 and the second container 22. The control module 24 is configured to adjust the direction in which the pumping assembly 23 pumps the pressurized liquid according to the monitoring results of the first liquid level gauge 241 and the second liquid level gauge 242.

[0047] In some embodiments, the conveying device 100 further includes a collecting manifold 40 connected to the pressurizing mechanism 20. The collecting manifold 40 includes a first valve 41 connected to the bottom of the first container 21, a second valve 42 connected to the bottom of the second container 22, and a collecting container 43 connected to the first valve 41 and the second valve 42 through a pipeline. The first valve 41 and the second valve 42 are normally closed valves, which are opened only when the first container 21 and the second container 22 are cleaned. During the long-term use of the first container 21 and the second container 22, solid impurities such as mud and sand in the produced material will gradually deposit at the bottom of the first container 21 and the second container 22, affecting the subsequent use of the pressurizing mechanism 20. Therefore, the first valve 41 and the second valve 42 can be opened when cleaning the first container 21 and the second container 22, so that the first container 21 and the second container 22 are connected to the collecting container 43, so that the mud and sand generated during cleaning can be transported to the collecting container 43 through the first valve 41 and the second valve 42 for treatment.

[0048] In some preferred embodiments, the collecting manifold 40 is also connected to the oil and gas field 200 through the first bypass pipe 44, and is connected to the terminal processing station 300 through the second bypass pipe 45. Once the pressurizing mechanism 20 stops operating due to a fault or other reasons, the produced material in the oil and gas field 200 can be temporarily transported to the collecting container 43 through the first bypass pipe 44 for processing, or can be temporarily transported directly to the terminal processing station 300 through the first bypass pipe 44 and the second bypass pipe 45. Preferably, a third valve 431 is also provided on the pipeline at the entrance of the collecting container 43 to prevent the produced material from entering the collecting container 43 when being transported to the terminal processing station 300 through the first bypass pipe 44 and the second bypass pipe 45. More preferably, a fifth one-way valve 441 is also provided on the first bypass pipe 44, and the fifth one-way valve 441 only allows the produced material to flow from the oil and gas field 200 to the second bypass pipe 45 or the collecting container 43, thereby preventing the fluid in the collecting manifold 40 from flowing back to the oil and gas field 200.

[0049] The conveying device 100 is described in detail below in conjunction with specific embodiments.

[0050] Embodiment 1

[0051] refer to Figure 1-3 As shown, in this embodiment, the input manifold 10 and the output manifold 30 are both connected to the upper ends of the first container 21 and the second container 22. The pumping assembly 23 includes a bidirectional pump 231 electrically connected to the control module 24, and the bidirectional pump 231 communicates with the lower ends of the first container 21 and the second container 22.

[0052] The operation process of the conveying device 100 of this embodiment is as follows. The pressurized liquid is injected into the first container 21 and the second container 22 through the injection pipe 212, so that the pressurized liquid fills the first container 21 and the second container 22. The two-way pump 231 pumps the pressurized liquid in the first container 21 into the second container 22 under the control of the control module 24, so that the pressurized liquid in the second container 22 flows to the terminal processing station 300 through the fourth one-way valve 32 of the output manifold 30. Since the pressurized liquid in this embodiment is water, the pressurized liquid in the second container 22 flowing to the terminal processing station 300 does not affect subsequent production.

[0053] In this process, as the volume of the pressurized fluid in the first container 21 gradually decreases, the produced material can enter the first container 21 from the oil and gas field 200 through the first one-way valve 11 to replenish the volume of the liquid phase fluid in the first container 21. As the pressure of the produced material changes after entering the first container 21, some free water and natural gas in the produced material precipitate. Due to gravity separation, the free water mixes with the pressurized fluid, and the natural gas forms a gas cap at the upper part of the internal cavity of the first container 21.

[0054] Combination Figure 2 As shown, as the two-way pump 231 continues to pump the pressurized liquid in the first container 21 into the second container 22, the liquid level of the pressurized liquid in the first container 21 drops to the first liquid level gauge 241. At this time, the part of the first container 21 located above the first liquid level gauge 241 is the produced material and the precipitated natural gas. The first liquid level gauge 241 sends a first electrical signal to the control module 24, and the control module 24 controls the two-way pump 231 to pump the pressurized liquid in the second container 22 into the first container 21 according to the first electrical signal. The liquid level of the pressurized liquid in the first container 21 rises, so that the produced material and the precipitated natural gas in the first container 21 flow to the terminal processing station 300 through the third one-way valve 31. Since the cross-sectional area of ​​the first container 21 is necessarily larger than the cross-sectional area of ​​the pipeline where the third one-way valve 31 is located, the produced material and the precipitated natural gas in the first container 21 are pressurized when flowing to the third one-way valve 31.

[0055] In this process, as the volume of the pressurized fluid in the second container 22 gradually decreases, the produced material can enter the second container 22 from the oil and gas field 200 through the second one-way valve 12 to replenish the volume of the liquid phase fluid in the second container 22. As the pressure of the produced material changes after entering the second container 22, some free water and natural gas in the produced material are precipitated. Due to gravity separation, the free water is mixed with the pressurized fluid, and the natural gas forms a gas cap at the upper part of the internal cavity of the second container 22.

[0056] Combination Figure 3 As shown, as the two-way pump 231 continues to pump the pressurized liquid in the second container 22 into the first container 21, the liquid level of the pressurized liquid in the second container 22 drops to the second liquid level gauge 242. At this time, the part of the second container 22 located above the second liquid level gauge 242 is the produced material and the precipitated natural gas. The second liquid level gauge 242 sends a second electrical signal to the control module 24, and the control module 24 controls the two-way pump 231 to pump the pressurized liquid in the first container 21 into the second container 22 according to the second electrical signal. The liquid level of the pressurized liquid in the second container 22 rises, so that the produced material and the precipitated natural gas in the second container 22 flow to the terminal processing station 300 through the fourth one-way valve 32. Since the cross-sectional area of ​​the second container 22 is necessarily larger than the cross-sectional area of ​​the pipeline where the fourth one-way valve 32 is located, the produced material and the precipitated natural gas in the second container 22 are pressurized when flowing to the third one-way valve 31.

[0057] When the liquid level of the pressurized liquid in the first container 21 drops to the first liquid level gauge 241 again, the above process is repeated continuously to realize pressurized mixed transportation of the produced material and the precipitated natural gas. Since the two-way pump 231 continuously pumps the pressurized liquid back and forth between the first container 21 and the second container 22, the natural gas precipitated in the produced material will not cause a gas lock failure of the two-way pump 231, thereby effectively ensuring the reliability of pressurized mixed transportation of the produced material and the precipitated natural gas.

[0058] Embodiment 2

[0059] refer to Figure 4-6 As shown, in this embodiment, the input manifold 10 and the output manifold 30 are both connected to the upper ends of the first container 21 and the second container 22. The pumping assembly 23 includes a first one-way pump 232 and a second one-way pump 233 electrically connected to the control module 24, and the first one-way pump 232 and the second one-way pump 233 are both connected to the lower ends of the first container 21 and the second container 22. The first one-way pump 232 can pump the pressurized liquid in the first container 21 into the second container 22, and the second one-way pump 233 can pump the pressurized liquid in the second container 22 into the first container 21.

[0060] The operation process of the conveying device 100 of this embodiment is as follows. The pressurized liquid is filled into the first container 21 and the second container 22 through the injection pipe 212, so that the pressurized liquid fills the first container 21 and the second container 22. The first one-way pump 232 pumps the pressurized liquid in the first container 21 into the second container 22 under the control of the control module 24, so that the pressurized liquid in the second container 22 flows to the terminal processing station 300 through the fourth one-way valve 32 of the output manifold 30.

[0061] Combination Figure 5 As shown, as the first one-way pump 232 continues to pump the pressurized liquid in the first container 21, the liquid level of the pressurized liquid in the first container 21 drops to the first liquid level gauge 241. At this time, the part of the first container 21 located above the first liquid level gauge 241 is the produced material and the precipitated natural gas. The first liquid level gauge 241 sends a third electrical signal to the control module 24, and the control module 24 controls the first one-way pump 232 to stop running according to the third electrical signal, and controls the second one-way pump 233 to pump the pressurized liquid in the second container 22 into the first container 21. The liquid level of the pressurized liquid in the first container 21 rises, so that the produced material and the precipitated natural gas in the first container 21 flow to the terminal processing station 300 through the third one-way valve 31.

[0062] Combination Figure 6As shown, as the second one-way pump 233 continues to pump the pressurized liquid in the second container 22, the liquid level of the pressurized liquid in the second container 22 drops to the second liquid level gauge 242. At this time, the part of the second container 22 located above the second liquid level gauge 242 is the produced material and the precipitated natural gas. The second liquid level gauge 242 sends a fourth electrical signal to the control module 24, and the control module 24 controls the second one-way pump 233 to stop running according to the fourth electrical signal, and controls the first one-way pump 232 to pump the pressurized liquid in the first container 21 into the second container 22. The liquid level of the pressurized liquid in the second container 22 rises, so that the produced material and the precipitated natural gas in the second container 22 flow to the terminal processing station 300 through the fourth one-way valve 32.

[0063] When the liquid level of the pressurized liquid in the first container 21 drops to the first liquid level gauge 241 again, the above process is repeated continuously to realize pressurized mixed transportation of the produced material and the precipitated natural gas.

[0064] Based on the conveying device 100 of the above embodiment, the present invention further provides a method for conveying oil and gas field produced materials, comprising the following steps.

[0065] In step S1 , the pressurized liquid is filled into the first container 21 and the second container 22 through the injection pipe 212 .

[0066] In step S2, the pressurized liquid in the first container 21 is pumped into the second container 22 by using the pumping assembly 23, so that the produced material of the oil and gas field 200 enters the first container 21 through the first one-way valve 11 until the liquid level of the pressurized liquid in the first container 21 drops to the first liquid level gauge 241.

[0067] In step S3, the pressurized liquid in the second container 22 is pumped into the first container 21 by using the pumping assembly 23, so that the produced material in the first container 21 flows to the terminal processing station 300 through the third one-way valve 31, and the produced material of the oil and gas field 200 enters the second container 22 through the second one-way valve 12 until the liquid level of the pressurized liquid in the second container 22 drops to the second liquid level gauge 242.

[0068] In step S4 , steps S2 and S3 are repeated, so that the produced materials of the oil and gas field 200 are continuously transported to the terminal processing station 300 through the input manifold 10 , the pressurizing mechanism 20 and the output manifold 30 .

[0069] Although the conveying device of the present invention is described in the above embodiments by using the first container 21 and the second container 22, it can be understood that the conveying device of the present invention can also use three or more containers, and the working principle is similar.

[0070] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0072] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A device for conveying oil and gas field products, comprising: An input manifold (10) for receiving produced materials from the oil and gas field (200); a pressurizing mechanism (20), connected to the oil and gas field (200) via the input manifold (10), the pressurizing mechanism (20) comprising at least one first container (21) and a second container (22) for containing pressurized liquid, and a pumping assembly (23) connecting the first container (21) and the second container (22), the pumping assembly (23) being electrically connected to a control module (24); and an output manifold (30) for connecting the terminal processing station (300) with the first container (21) and the second container (22), The control module (24) is configured to control the pumping assembly (23) so that the pressurized fluid flows between the first container (21) and the second container (22), so that the produced material of the oil and gas well (200) flows into the first container (21) or the second container (22) through the input manifold (10), and the produced material in the first container (21) or the second container (22) flows to the terminal processing station (300) through the output manifold (30).

2. The device for conveying oil and gas field produced materials according to claim 1, characterized in that: The pumping assembly (23) includes a bidirectional pump (231) connecting the first container (21) and the second container (22), and is used to pump the pressurized liquid in the first container (21) into the second container (22) or, under the control of the control module (24), pump the pressurized liquid in the second container (22) into the first container (21).

3. The device for conveying oil and gas field produced materials according to claim 1, characterized in that: The pumping assembly (23) includes a first one-way pump (232) and a second one-way pump (233) which connect the first container (21) and the second container (22); the first one-way pump (232) is configured to pump the pressurized liquid in the first container (21) into the second container (22) under the control of the control module (24); and the second one-way pump (233) is configured to pump the pressurized liquid in the second container (22) into the first container (21).

4. The device for conveying oil and gas field produced materials according to claim 1, characterized in that: The input manifold (10) comprises a first one-way valve (11) connected to the first container (21), and a second one-way valve (12) connected to the second container (22), wherein the first one-way valve (11) only allows the produced flow of the oil and gas field (200) to flow to the first container (21), and the second one-way valve (12) only allows the produced flow of the oil and gas field (200) to flow to the second container (22).

5. The device for conveying oil and gas field produced materials according to claim 4, characterized in that: The output manifold (30) includes a third one-way valve (31) connected to the first container (21), and the third one-way valve (31) only allows the produced material and / or the pressurized fluid in the first container (21) to flow to the terminal processing station (300), so that when the pumping component (23) pumps the pressurized fluid in the second container (22) into the first container (21), the produced material in the first container (21) can flow to the terminal processing station (300) through the third one-way valve (31), and the produced material of the oil and gas field (200) can flow into the second container (22) through the second one-way valve (12).

6. The device for conveying oil and gas field produced materials according to claim 4, characterized in that: The output manifold (30) includes a fourth one-way valve (32) connected to the second container (22), and the fourth one-way valve (32) only allows the produced material and / or the pressurized fluid in the second container (22) to flow to the terminal processing station (300), so that when the pumping component (23) pumps the pressurized fluid in the first container (21) into the second container (22), the produced material in the second container (22) can flow to the terminal processing station (300) through the fourth one-way valve (32), and the produced material of the oil and gas field (200) can flow into the first container (21) through the first one-way valve (11).

7. The device for conveying oil and gas field produced materials according to any one of claims 1 to 6, characterized in that: A first liquid level gauge (241) and a second liquid level gauge (242) are respectively arranged at predetermined positions of the first container (21) and the second container (22) for monitoring the liquid levels of the pressurized liquid in the first container (21) and the second container (22).

8. The device for conveying oil and gas field produced materials according to claim 7, characterized in that: The control module (24) is electrically connected to the first liquid level gauge (241) and the second liquid level gauge (242). When the first liquid level gauge (241) detects the liquid level of the pressurized liquid in the first container (21), the control module (24) controls the pumping component (23) to pump the pressurized liquid in the second container (22) into the first container (21); or, when the second liquid level gauge (242) detects the liquid level of the pressurized liquid in the second container (22), the control module (24) controls the pumping component (23) to pump the pressurized liquid in the first container (21) into the second container (22).

9. The device for conveying oil and gas field produced materials according to any one of claims 1 to 6, characterized in that: The conveying device (100) further comprises a collecting manifold (40), wherein the collecting manifold (40) comprises a first valve (41) and a second valve (42) respectively connected to the bottom of the first container (21) and the second container (22), and is used to convey mud, sand and dirt generated when cleaning the first container (21) and the second container (22) to the collecting container (43).

10. A method for transporting oil and gas field produced materials, characterized in that: The method is carried out using the conveying device (100) according to any one of claims 1 to 9, comprising the following steps: Step S1: injecting pressurized liquid into the first container (21) and the second container (22); Step S2: Pumping the pressurized liquid in the first container (21) into the second container (22) so that the produced material of the oil and gas field (200) enters the first container (21) until the liquid level of the pressurized liquid in the first container (21) drops to a predetermined position; Step S3: pumping the pressurized liquid in the second container (22) into the first container (21) so that the produced material of the oil and gas field (200) enters the second container (22) until the liquid level of the pressurized liquid in the second container (22) drops to a predetermined position; Step S4: repeating steps S2 and S3, so that the produced material in the first container (21) or the second container (22) is transported to the terminal processing station (300) through the output manifold (30).

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