A plunger gas lift drainage collection simulation experiment device

Abstract

The application discloses a kind of plunger gas lift drainage collection simulation experiment device, including vertical experimental platform, angle adjusting mechanism, angle adjusting experimental platform and manifold assembly, vertical experimental platform is provided with vertical experimental tube, the upper end of angle adjusting experimental platform is fixedly connected with vertical moving end, the lower end of angle adjusting experimental platform is fixedly connected with horizontal moving end, angle adjusting experimental platform is provided with inclined experimental tube, the import end of vertical experimental tube and inclined experimental tube is communicated with the outlet end of manifold assembly, the outlet end of manifold assembly is communicated with the outlet end of vertical experimental tube and inclined experimental tube;The application can simulate the working condition of vertical well section and different angle inclined well section by adjusting the inclination angle of inclined experimental tube through angle adjusting mechanism, can complete gas, liquid mixing and control, provides experimental and data support for the application effect of plunger drainage and production site to improve.

Description

Technical Field

[0001] This invention relates to the field of oil and gas field gas production technology, specifically to a plunger gas lift drainage collection simulation experimental device. Background Technology

[0002] Among the various fluid removal and gas production technologies currently available, the gas lift plunger is a low-cost gas production technology that can effectively remove accumulated fluid. The gas lift plunger lifts liquid or gas from the oil and gas well. It is a lifting method that utilizes the energy of the reservoir itself to produce gas and remove fluid. The plunger acts as a piston that can move freely in the tubing. During well shut-in, the energy in the well is stored by closing the surface valve. Then, the surface valve is opened, and the liquid is carried to the surface by the gas flow, and this process is repeated.

[0003] Currently, there are no effective means for real-time monitoring under existing technical conditions. Production management mainly relies on theoretical models to predict the time it takes for the plunger to enter the liquid surface and reach the bottom of the well, thereby controlling the opening and closing times of the valves to implement production in gas wells. Due to the large number of relevant production parameters and the imperfections of the prediction model, the actual values ​​will deviate significantly from the predicted values. If the valve opening time is too fast, the plunger will start to rise before entering the liquid column, resulting in the plunger doing useless work. If the valve opening time is too long, excessive liquid accumulation may lead to plunger lifting failure. At the same time, there is also the possibility of the plunger getting stuck in the tubing, which is not predicted. If the operator can accurately understand the plunger's descent speed, position, and the time required for the plunger to fall to the liquid surface and the bottom of the tubing, then the well opening, closing, and maintenance times can be effectively arranged, improving work efficiency.

[0004] Currently, there are many types of plunger tools, and the lifting efficiency varies depending on the type of plunger tool under different working conditions. It is also important to verify whether key parameters such as drop position, drop speed, and sealing performance meet design requirements. Furthermore, the sealing effect of the new single-flow valve catcher used with plungers still needs further verification. At present, due to the lack of effective experimental equipment and evaluation methods, process designers can only select plunger tools based on field experience. This may lead to problems such as plunger failure to drop to the correct position and unsatisfactory liquid carrying effect during production, affecting the plunger's pumping efficiency. Summary of the Invention

[0005] The technical problem to be solved by this invention is the lack of effective experimental equipment and evaluation methods. Process designers can only select plunger tools based on field experience. The purpose is to provide a plunger gas lift drainage collection simulation experimental device, which solves the problem of simulating the working conditions of vertical well sections and inclined well sections at different angles, and provides experimental and data support for improving the field application effect of plunger drainage.

[0006] This invention is achieved through the following technical solution:

[0007] A plunger air lift drainage collection simulation experimental device includes:

[0008] A vertical experimental platform, which is set vertically, and a vertical experimental tube is set on the vertical experimental platform;

[0009] An angle adjustment mechanism, which has a vertical moving end and a horizontal moving end;

[0010] An angle adjustment experimental platform is tilted, with its upper end fixedly connected to the vertical moving end and its lower end fixedly connected to the horizontal moving end. An inclined experimental tube is provided on the angle adjustment experimental platform.

[0011] The tube assembly is connected at its output end to the inlet end of the vertical experimental tube and the inclined experimental tube, and at its discharge end to the outlet end of the vertical experimental tube and the inclined experimental tube.

[0012] Specifically, the vertical experimental platform includes:

[0013] A vertical mounting bracket, which is set vertically;

[0014] A vertical fixing assembly that fixes the vertical experimental tube onto the vertical mounting base;

[0015] The vertical experimental tube includes:

[0016] A vertical water inlet pipe assembly, the inlet end of which is connected to the output end formed by the pipe assembly;

[0017] The vertical return water pipe has its inlet end connected to the outlet end of the vertical inlet water pipe group, and the outlet end of the vertical return water pipe is connected to the discharge end formed by the pipe group.

[0018] The inlet end of the vertical water inlet pipe assembly is located at the lower end of the vertical water inlet pipe assembly, and the outlet end of the vertical water inlet pipe assembly is located at the upper end of the vertical water inlet pipe assembly.

[0019] The angle adjustment experimental platform includes:

[0020] An inclined mounting base, which is inclinedly positioned;

[0021] An inclined fixing assembly that fixes the inclined experimental tube onto the inclined mounting base;

[0022] The tilted experimental tube includes:

[0023] An inclined inlet pipe assembly, the inlet end of which is connected to the output end formed by the pipe assembly;

[0024] An inclined return water pipe, the inlet end of which is connected to the outlet end of the inclined inlet water pipe group, and the outlet end of the inclined return water pipe is connected to the discharge end formed by the pipe group.

[0025] The inlet end of the inclined water inlet pipe assembly is located at the lower end of the inclined water inlet pipe assembly, and the outlet end of the inclined water inlet pipe assembly is located at the upper end of the inclined water inlet pipe assembly.

[0026] As a preferred embodiment, the vertical water inlet pipe assembly includes:

[0027] A first vertical tube; and a first vertical plunger disposed inside the first vertical tube and capable of sliding up and down along the first vertical tube;

[0028] A second vertical tube; and a second vertical plunger disposed inside the second vertical tube and capable of sliding up and down along the second vertical tube;

[0029] A third vertical tube; and a third vertical plunger disposed inside the third vertical tube and capable of sliding up and down along the third vertical tube;

[0030] The first vertical pipe, the second vertical pipe, and the third vertical pipe are arranged in parallel and vertically. The inlet ends of the first vertical pipe, the second vertical pipe, and the third vertical pipe are all connected to the output end of the pipe assembly. The outlet ends of the first vertical pipe, the second vertical pipe, and the third vertical pipe are connected to the vertical return water pipe.

[0031] The inclined water inlet pipe assembly includes:

[0032] A first inclined tube; and a first inclined plunger disposed inside the first inclined tube and capable of sliding up and down along the first inclined tube;

[0033] The second inclined tube; and the second inclined plunger disposed inside the second inclined tube and capable of sliding up and down along the second inclined tube;

[0034] The third inclined tube; and the third inclined plunger disposed inside the third inclined tube and capable of sliding up and down along the third inclined tube;

[0035] The first inclined pipe, the second inclined pipe, and the third inclined pipe are arranged in parallel and at an inclination. The inlet ends of the first inclined pipe, the second inclined pipe, and the third inclined pipe are all connected to the output end of the pipe assembly. The outlet ends of the first inclined pipe, the second inclined pipe, and the third inclined pipe are connected to the inclined return water pipe.

[0036] Specifically, multiple metal proximity switches are provided on the first vertical tube, the second vertical tube, the first inclined tube, and the second inclined tube. The metal proximity switches are distributed along the central axis of the corresponding experimental tube. The metal proximity switches are used to detect the positions of the corresponding first vertical plunger, the second vertical plunger, the first inclined plunger, and the second inclined plunger.

[0037] Specifically, the conduit comprises:

[0038] Water pump;

[0039] Gas source;

[0040] The four-way mixer has its first interface as the output terminal formed by the pipes;

[0041] The first four-way valve has a first port connected to the second port of the four-way mixer, a second port connected to the outlet of the water pump, and a third port connected to a low-pressure drain ball valve.

[0042] The second four-way connector has its first port connected to the third port of the four-way mixer, and its second port connected to the outlet of the gas source.

[0043] The third four-way connector has a first interface that is the discharge end formed by the pipe assembly, a second interface that is connected to the third interface of the second four-way connector, and a third interface that is connected to the exhaust port.

[0044] Furthermore, an electric ball valve is provided between the water pump and the second interface of the first four-way valve;

[0045] A high-pressure drain ball valve is provided between the second port of the four-way mixer and the first port of the first four-way mixer.

[0046] A ball valve is provided between the third port of the four-way mixer and the first port of the second four-way mixer;

[0047] A balance ball valve is provided between the third port of the second four-way valve and the second port of the third four-way valve;

[0048] An electric regulating valve is provided at the third interface of the third four-way valve;

[0049] Pressure sensors are connected to the fourth port of the four-way mixer, the fourth port of the second four-way mixer, and the fourth port of the third four-way mixer. Temperature sensors are also connected to the fourth port of the four-way mixer and the fourth port of the third four-way mixer. A water level sensor is connected to the fourth port of the first four-way mixer.

[0050] Preferably, a manual test valve is provided at the inlet end of the first vertical pipe, the second vertical pipe, the third vertical pipe, the first inclined pipe, the second inclined pipe, and the third inclined pipe;

[0051] An electric test valve is provided at the outlet end of the first vertical pipe, the second vertical pipe, the third vertical pipe, the first inclined pipe, the second inclined pipe, and the third inclined pipe;

[0052] Both the vertical return water pipe and the inclined return water pipe are connected to an air release valve.

[0053] The angle adjustment mechanism and the pipe are electrically connected to the measurement and control system.

[0054] In a preferred embodiment, the first vertical tube and the first inclined tube are 2-3 / 8-inch tubing strings;

[0055] The second vertical tube and the second inclined tube are 2-7 / 8 inch tubing strings;

[0056] The third vertical tube and the third inclined tube are strings of plexiglass tubes;

[0057] The vertical return water pipe and the inclined return water pipe are 2-3 / 8 inch return water pipes.

[0058] Specifically, the oil pipe string includes a long oil pipe and a short oil pipe connected to its lower end, and the plexiglass pipe string includes multiple glass pipes connected in series.

[0059] The upper ends of both the oil pipe string and the plexiglass pipe string are short-circuited with buffers, the lower ends of both the oil pipe string and the plexiglass pipe string are short-circuited with locking devices, and the upper end of the return water pipe is short-circuited with a plug.

[0060] The buffer includes:

[0061] The lower end of the pipe is sealed to the upper end of the oil pipe string / the plexiglass pipe string, and the upper end of the pipe is provided with a hose connector.

[0062] A spring is coaxially disposed inside the tube, with its upper end fixedly connected to the tube, and its lower end applying a downward buffering force to the impacting plunger.

[0063] Specifically, the angle adjustment mechanism includes a vertical moving component and a horizontal moving component, which are vertically distributed.

[0064] The vertical movement component includes:

[0065] Vertical slide rail;

[0066] A vertical slide table is slidably connected to the vertical slide rail and can slide up and down along the vertical slide rail. The upper end of the angle adjustment experimental platform is connected to the vertical slide table.

[0067] A winch is disposed above the vertical slide rail, and the traction end of the winch is fixedly connected to the vertical slide table;

[0068] The horizontal movement component includes:

[0069] Horizontal slide rail;

[0070] A horizontal slide table is slidably connected to the horizontal slide rail and can slide horizontally along the horizontal slide rail; the lower end of the angle adjustment experimental platform is connected to the horizontal slide table.

[0071] A locking mechanism is used to limit the relative movement between the horizontal slide and the horizontal slider.

[0072] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0073] This invention simulates the working conditions of vertical well sections and inclined well sections at different angles by setting up a vertical experimental tube on a vertical experimental platform and an inclined experimental tube on an angle adjustment experimental platform, and adjusting the inclination angle of the inclined experimental tube by an angle adjustment mechanism. It can complete gas-liquid mixing and control, and monitor the running position of the plunger in real time by a proximity switch installed on the experimental tubing. It can conduct experiments such as plunger falling stop position, fluid loss, and single-flow valve locking device function tests, providing experimental and data support for improving the field application effect of plunger drainage. Attached Figure Description

[0074] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the invention. These drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, but do not constitute a limitation on the embodiments of the present invention.

[0075] Figure 1 This is a schematic diagram of the structure of a plunger air lift drainage collection simulation experimental device according to the present invention.

[0076] Figure 2 This is a schematic diagram of the structure of the vertical experimental platform according to the present invention.

[0077] Figure 3 This is a schematic diagram of the structure of the first vertical tube according to the present invention.

[0078] Figure 4 This is a schematic diagram of the vertical return water pipe according to the present invention.

[0079] Figure 5 This is a schematic diagram of the structure of the first inclined tube according to the present invention.

[0080] Figure 6 This is a schematic diagram of the assembly structure of the pipes according to the present invention.

[0081] Figure 7 This is a schematic diagram of the pipeline connection according to the present invention.

[0082] Reference numerals: 1-Vertical experimental platform, 2-Vertical moving component, 3-Angle adjustment experimental platform, 4-Horizontal slide, 5-Horizontal slide rail, 6-Buffer, 7-Clocking device, 8-Manual test valve, 9-Electric test valve, 10-Metal proximity switch, 11-Vent valve.

[0083] 12-Water pump, 13-Air source, 14-Four-way mixer, 15-First four-way valve, 16-Second four-way valve, 17-Third four-way valve, 18-Low-pressure drain valve, 19-Exhaust port, 20-Electric ball valve, 21-High-pressure drain valve, 22-Inlet ball valve, 23-Balance ball valve, 24-Electric regulating valve, 25-Pressure sensor, 26-Water level sensor.

[0084] 101-Vertical mounting base, 102-Vertical fixing assembly, 103-First vertical pipe, 104-Second vertical pipe, 105-Third vertical pipe, 106-Vertical return water pipe, 107-First vertical plunger, 108-Second vertical plunger, 109-Third vertical plunger, 1031-Long oil pipe, 1032-Short oil pipe, 1061-Plug.

[0085] 203 - First inclined pipe, 204 - Second inclined pipe, 205 - Third inclined pipe, 206 - Inclined return pipe. Detailed Implementation

[0086] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0087] It should also be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0088] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0089] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0090] Where there is no conflict, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0091] Example 1

[0092] like Figure 1 As shown, this embodiment provides a plunger air lift drainage collection simulation experimental device, which includes a vertical experimental platform 1, an angle adjustment mechanism, an angle adjustment experimental platform 3, and a pipe assembly.

[0093] The vertical experimental platform 1 is set vertically and can be fixed in various ways. In this embodiment, it is installed on the simulated derrick. The vertical experimental platform 1 is equipped with a vertical experimental tube, which is used to simulate the working conditions of the vertical well pipe.

[0094] The angle adjustment mechanism has a vertical moving end and a horizontal moving end. The vertical moving end can move in the vertical direction, and the horizontal moving end can move in the horizontal direction.

[0095] The angle adjustment experimental platform 3 is tilted, and its upper end is fixedly connected to the vertical moving end, while its lower end is fixedly connected to the horizontal moving end. The angle adjustment experimental platform 3 and the angle adjustment mechanism form a right-angled triangle structure, with the angle adjustment experimental platform 3 being the hypotenuse of the triangle. The slope of the hypotenuse can be changed as needed. An inclined experimental tube is installed on the angle adjustment experimental platform 3 to simulate the working conditions of the inclined well section.

[0096] The output end of the tube assembly is connected to the inlet end of the vertical and inclined experimental tubes, and the discharge end of the tube assembly is connected to the outlet end of the vertical and inclined experimental tubes.

[0097] The tube assembly is used to provide gas-liquid mixtures to vertical and inclined experimental tubes to simulate the working environment of the plunger.

[0098] Furthermore, it also includes a measurement and control system, which is electrically connected to the angle adjustment mechanism and the pipeline, enabling both electric control of the entire experimental setup and detection of experimental parameters.

[0099] As can be seen in the following embodiments, the device also includes electronic components such as valves and sensors, which can be controlled and receive data through a measurement and control system.

[0100] Example 2

[0101] like Figure 2 As shown, the vertical experimental platform 1 in this embodiment includes a vertical mounting base 101 and a vertical fixing component 102.

[0102] The vertical mounting base 101 is set vertically and can be a long plate structure. The vertical fixing component 102 fixes the vertical experimental tube to the vertical mounting base 101.

[0103] The vertical experimental tube includes a vertical inlet pipe group and a vertical return pipe 106.

[0104] The inlet end of the vertical water inlet pipe assembly is connected to the outlet end of the pipe assembly. The gas-liquid mixture is introduced into the vertical water inlet pipe assembly through the pipe assembly, and the operation of the vertical well section is simulated through the vertical water inlet pipe assembly.

[0105] The inlet end of the vertical return water pipe 106 is connected to the outlet end of the vertical inlet water pipe group, and the outlet end of the vertical return water pipe 106 is connected to the discharge end formed by the pipe group. The vertical return water pipe 106 is used to recover the gas-liquid mixture in the vertical inlet water pipe group to avoid polluting the experimental environment or damaging the experimental device.

[0106] In addition, to conform to actual working conditions, the inlet end of the vertical water inlet pipe assembly is located at the lower end of the vertical water inlet pipe assembly, and the outlet end of the vertical water inlet pipe assembly is located at the upper end of the vertical water inlet pipe assembly.

[0107] The vertical water inlet pipe assembly includes a first vertical pipe 103, a second vertical pipe 104, and a third vertical pipe 105.

[0108] It also includes a first vertical plunger 107 disposed within the first vertical tube 103 and capable of sliding up and down along the first vertical tube 103.

[0109] The second vertical plunger 108 is disposed inside the second vertical tube 104 and can slide up and down along the second vertical tube 104.

[0110] A third vertical plunger 109 is disposed inside the third vertical tube 105 and can slide up and down along the third vertical tube 105.

[0111] This involves pumping a gas-liquid mixture into the lower end of a vertical pipe, and using its action on the plunger to simulate actual working conditions.

[0112] The first vertical pipe 103, the second vertical pipe 104, and the third vertical pipe 105 are arranged in parallel and vertically. The inlet ends of the first vertical pipe 103, the second vertical pipe 104, and the third vertical pipe 105 are all connected to the output end of the pipe assembly. The outlet ends of the first vertical pipe 103, the second vertical pipe 104, and the third vertical pipe 105 are connected to the vertical return water pipe 106.

[0113] In this embodiment and in several other embodiments described below, all connections are made via high-pressure hoses.

[0114] In this embodiment, there are four vertical pipes: the first vertical pipe 103, the second vertical pipe 104, the third vertical pipe 105, and the vertical return pipe 106.

[0115] Example 3

[0116] like Figure 3 and Figure 4 As shown, this embodiment provides specific dimensions for the first vertical pipe 103, the second vertical pipe 104, the third vertical pipe 105, and the vertical return pipe 106 in Embodiment 2.

[0117] The first vertical tube 103 is a 2-3 / 8 inch oil pipe string, and the second vertical tube 104 is a 2-7 / 8 inch oil pipe string. The oil pipe string includes a 9.4m long oil pipe 1031 and a 3.5m short oil pipe 1032 connected to its lower end. The lower end of each oil pipe string is shorted to a 0.6m clamp 7. The overall pressure test of the oil pipe test tube is not less than 14MPa.

[0118] The third vertical tube 105 is an acrylic glass tube string, which consists of 9 glass tubes with an inner diameter of 50mm, each 1.5m long, connected in series. The overall pressure test of the glass tube is not less than 1MPa.

[0119] The vertical return water pipe 106 is a 2-3 / 8 inch return water pipe, which is a blowout pipe. It also includes a 9.4m long oil pipe 1031, with a plug 1061 at the upper end and a 3.5m short oil pipe 1032 at the lower end. The upper ends of the first vertical pipe 103, the second vertical pipe 104, and the third vertical pipe 105 are all connected to the vertical return water pipe 106. In this embodiment, an electric test valve 9 is welded to the vertical return water pipe 106. The upper ends of the first vertical pipe 103, the second vertical pipe 104, and the third vertical pipe 105 are connected to the electric test valve 9 through high-pressure hoses.

[0120] Three electric test valves 9 and one vent valve 11 are installed on the vertical return water pipe 106, and they are spaced 250mm apart.

[0121] Example 4

[0122] The structure of the angle adjustment experimental platform 3 can be similar to that of the vertical experimental platform 1, and it only simulates the inclined well section by installing the angle.

[0123] The angle adjustment experimental platform 3 includes an inclined mounting base and an inclined fixing component.

[0124] The tilted mounting base is tilted, and the tilted fixing component fixes the tilted test tube onto the tilted mounting base.

[0125] The inclined test tube includes an inclined inlet pipe and an inclined return pipe 206.

[0126] The inlet end of the inclined water inlet pipe assembly is connected to the outlet end of the pipe assembly; the inlet end of the inclined return water pipe 206 is connected to the outlet end of the inclined water inlet pipe assembly, and the outlet end of the inclined return water pipe 206 is connected to the discharge end of the pipe assembly.

[0127] The inlet end of the inclined water inlet pipe assembly is located at the lower end of the inclined water inlet pipe assembly, and the outlet end of the inclined water inlet pipe assembly is located at the upper end of the inclined water inlet pipe assembly.

[0128] The inclined water inlet pipe assembly includes a first inclined pipe 203, a second inclined pipe 204, and a third inclined pipe 205.

[0129] It also includes a first inclined plunger disposed in the first inclined tube 203 and capable of sliding up and down along the first inclined tube 203; a second inclined plunger disposed in the second inclined tube 204 and capable of sliding up and down along the second inclined tube 204; and a third inclined plunger disposed in the third inclined tube 205 and capable of sliding up and down along the third inclined tube 205.

[0130] The first inclined pipe 203, the second inclined pipe 204, and the third inclined pipe 205 are arranged in parallel and at an inclination. The inlet ends of the first inclined pipe 203, the second inclined pipe 204, and the third inclined pipe 205 are all connected to the output end of the pipe assembly. The outlet ends of the first inclined pipe 203, the second inclined pipe 204, and the third inclined pipe 205 are connected to the inclined return water pipe 206.

[0131] Its structure and working principle can be referred to the vertical experimental platform 1, and will not be repeated here.

[0132] Example 5

[0133] like Figure 5 As shown, this embodiment provides specific dimensions for the first inclined pipe 203, the second inclined pipe 204, the third inclined pipe 205, and the inclined return water pipe 206 in Embodiment 4.

[0134] The first inclined tube 203 is a 2-3 / 8 inch oil pipe string, and the second inclined tube 204 is a 2-7 / 8 inch oil pipe string. The oil pipe string includes a 6m long oil pipe 1031. In this embodiment, a short oil pipe 1032 is not provided. The lower end of the oil pipe string is shorted to a 0.6m clamp 7. The overall pressure test of the oil pipe test tube is not less than 14MPa.

[0135] The third inclined tube 205 is an acrylic glass tube string, which consists of four 1.5m long glass tubes connected in series with an inner diameter of 50mm. The overall pressure test of the glass tube is not less than 1MPa.

[0136] The inclined return water pipe 206 is a 2-3 / 8 inch return water pipe, which is a blowout pipe. It also includes a 6m long oil pipe 1031 with a plug 1061 at its upper end. The upper ends of the first inclined pipe 203, the second inclined pipe 204, and the third inclined pipe 205 are all connected to the inclined return water pipe 206. In this embodiment, an electric test valve 9 is welded to the inclined return water pipe 206. The upper ends of the first inclined pipe 203, the second inclined pipe 204, and the third inclined pipe 205 are connected to the electric test valve 9 through high-pressure hoses.

[0137] The inclined return water pipe 206 is equipped with three electric test valves 9 and one vent valve 11, which are spaced 250mm apart.

[0138] Example 6

[0139] The structures of Examples 1 to 5 can be used to conduct simulation experiments. The corresponding device provided in this example can determine the position of the plunger within the water inlet pipe assembly.

[0140] Multiple metal proximity switches 10 are provided on the first vertical tube 103, the second vertical tube 104, the first inclined tube 203, and the second inclined tube 204. The metal proximity switches 10 are distributed along the central axis of the corresponding experimental tube. The metal proximity switches 10 are used to detect the position of the corresponding first vertical plunger 107, second vertical plunger 108, first inclined plunger, and second inclined plunger.

[0141] The metal proximity switch 10 has an installation interval of 1m and a detection distance of 4mm. The specific installation method is as follows: weld a welding base with an internal thread of M32*1.5 onto the oil pipe, install the sensor in the welding base, install a sensor sleeve on the upper end of the sensor, and seal the lower end of the sensor with glue.

[0142] Example 7

[0143] like Figure 6 As shown in the figure, the structure of the pipe assembly is described in this embodiment. The pipe assembly mainly includes a water pump 12, an air source 13, a four-way mixer 14, a first four-way connector 15, a second four-way connector 16, and a third four-way connector 17.

[0144] The four-way mixer 14 is used to mix the liquid supplied by the water pump 12 and the gas supplied by the air pump. The first interface of the four-way mixer 14 is the output end of the pipe assembly, which is connected to the experimental platform through a high-pressure hose.

[0145] The first port of the first four-way connector 15 is connected to the second port of the four-way mixer 14, the second port of the first four-way connector 15 is connected to the outlet of the water pump 12, and the third port of the first four-way connector 15 is connected to a low-pressure drain ball valve.

[0146] The first port of the second four-way connector 16 is connected to the third port of the four-way mixer 14, and the second port of the second four-way connector 16 is connected to the outlet of the air source 13.

[0147] The first interface of the third four-way connector 17 is the discharge end formed by the pipe assembly. The second interface of the third four-way connector 17 is connected to the third interface of the second four-way connector 16. The third interface of the third four-way connector 17 is connected to the exhaust port 19.

[0148] Additionally, an electric ball valve 20 is installed between the water pump 12 and the second port of the first four-way connector 15; a high-pressure drain ball valve is installed between the second port of the four-way mixer 14 and the first port of the first four-way connector 15; an inlet ball valve 22 is installed between the third port of the four-way mixer 14 and the first port of the second four-way connector 16; a balancing ball valve 23 is installed between the third port of the second four-way connector 16 and the second port of the third four-way connector 17; and an electric regulating valve 24 is installed at the third port of the third four-way connector 17.

[0149] By installing various valves, gas and liquid discharge can be remotely controlled. Among them, the on / off valve, shut-off valve, and liquid level measuring valve are electrically operated, while the pressure regulating valve and adjusting valve use an electrically operated scale adjustment structure to achieve automatic and remote adjustment and control.

[0150] In addition, for pressure detection, pressure sensors 25 are connected to the fourth port of the four-way mixer 14, the fourth port of the second four-way mixer 16, and the fourth port of the third four-way mixer 17. Temperature sensors are also connected to the fourth port of the four-way mixer 14 and the fourth port of the third four-way mixer 17. A water level sensor 26 is connected to the fourth port of the first four-way mixer 15.

[0151] Example 8

[0152] like Figure 7 As shown, this embodiment provides a connection method in which a manual test valve 8 is provided at the inlet end of the first vertical pipe 103, the second vertical pipe 104, the third vertical pipe 105, the first inclined pipe 203, the second inclined pipe 204, and the third inclined pipe 205; a manual test valve 8 is provided at the lower end of each test pipe, and the test pipe is manually selected according to different experiments.

[0153] The outlet ends of the first vertical tube 103, the second vertical tube 104, the third vertical tube 105, the first inclined tube 203, the second inclined tube 204, and the third inclined tube 205 are all equipped with electric test valves 9, which can realize remote control of the test tubes.

[0154] Both the vertical return water pipe 106 and the inclined return water pipe 206 are connected to an air release valve 11 to facilitate the adjustment of the air pressure inside the return water pipe.

[0155] Example 9

[0156] The upper ends of both the oil pipe string and the plexiglass pipe string are short-circuited to the buffer 6, the lower ends of both the oil pipe string and the plexiglass pipe string are short-circuited to the locking device 7, and the upper end of the return water pipe is short-circuited to the plug 1061.

[0157] To avoid excessive impact caused by the plunger moving upwards inside the experimental tube, a buffer 6 is provided. The buffer 6 includes a tube body and a spring.

[0158] The lower end of the pipe is sealed to the upper end of the oil pipe string / plexiglass pipe string, and the upper end of the pipe is equipped with a hose connector to ensure that the buffer 6 will not obstruct the gas-liquid mixture.

[0159] The spring is coaxially mounted inside the tube, with its upper end fixedly connected to the tube. The lower end of the spring applies a downward buffering force to the impacting plunger, thus buffering the high-speed upward movement of the plunger.

[0160] Example 10

[0161] In this embodiment, the angle adjustment mechanism includes a vertical moving component 2 and a horizontal moving component, which are vertically distributed.

[0162] The vertical moving assembly 2 includes a vertical slide rail, a vertical slide table, and a winch.

[0163] The vertical slide rail is set vertically and can be fixedly connected to the simulated derrick. A winch is set above the vertical speech draft.

[0164] The vertical slide table and the vertical slide rail are slidably connected, and the traction end of the winch is fixedly connected to the vertical slide table. The winch can pull the vertical slide table up and down along the vertical slide rail. The upper end of the angle adjustment experimental platform 3 is connected to the vertical slide table.

[0165] The horizontal movement assembly includes a horizontal slide rail 5, a horizontal slide table 4, and a locking mechanism.

[0166] The horizontal slide rail 5 is set horizontally, and the horizontal slide rail 5, the vertical slide rail and the angle adjustment experimental platform 3 can form a triangular structure.

[0167] The horizontal slide table 4 is slidably connected to the horizontal slide rail 5 and can slide horizontally along the horizontal slide rail 5. The lower end of the angle adjustment experimental platform 3 is connected to the horizontal slide table 4. By changing the height of the vertical slide table, the angle of the angle adjustment experimental platform 3 can be adjusted.

[0168] The locking mechanism is used to limit the relative movement between the horizontal slide 4 and the horizontal slider.

[0169] The angle adjustment range of the angle adjustment experimental platform 3 is 45° to 80°. When the angle adjustment experimental platform 3 is in a high position, it simulates a minimum well inclination angle of 45°. When the angle adjustment experimental platform 3 is in a low position, it simulates a maximum well inclination angle of 80°.

[0170] The locking mechanism has a two-way setting and dual limit function: electronic limit and mechanical limit. Mechanical locking structures are set on the horizontal and vertical rails. The horizontal moving trolley is used as a horizontal slide table 4 with a table size of 700mm long * 600mm wide * 450mm high.

[0171] Additionally, an angle adjustment experimental platform 3 is equipped with a 0-90° tilt sensor for angle measurement.

[0172] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0173] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0174] Those skilled in the art should understand that the above embodiments are merely for illustrating the present invention and are not intended to limit the scope of the invention. Those skilled in the art can make other changes or modifications based on the above invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A plunger air lift drainage collection simulation experimental device, characterized in that, include: A vertical experimental platform (1) is set vertically, and a vertical experimental tube is set on the vertical experimental platform (1); An angle adjustment mechanism, which has a vertical moving end and a horizontal moving end; An angle adjustment experimental platform (3) is tilted, and the upper end of the angle adjustment experimental platform (3) is fixedly connected to the vertical moving end, the lower end of the angle adjustment experimental platform (3) is fixedly connected to the horizontal moving end, and an inclined experimental tube is provided on the angle adjustment experimental platform (3). The tube assembly is connected to the outlet of the vertical experimental tube and the inclined experimental tube, and the discharge end of the tube assembly is connected to the outlet of the vertical experimental tube and the inclined experimental tube; wherein, the vertical experimental platform (1) includes: A vertical mounting base (101) is vertically positioned. A vertical fixing assembly (102) secures the vertical experimental tube to the vertical mounting base (101); The vertical experimental tube includes: A vertical water inlet pipe assembly, the inlet end of which is connected to the output end formed by the pipe assembly; The vertical return water pipe (106) has its inlet end connected to the outlet end of the vertical inlet water pipe group, and the outlet end of the vertical return water pipe (106) is connected to the discharge end formed by the pipe group. The inlet end of the vertical water inlet pipe assembly is located at the lower end of the vertical water inlet pipe assembly, and the outlet end of the vertical water inlet pipe assembly is located at the upper end of the vertical water inlet pipe assembly. The angle adjustment experimental platform (3) includes: An inclined mounting base, which is inclinedly positioned; An inclined fixing assembly that fixes the inclined experimental tube onto the inclined mounting base; The tilted experimental tube includes: An inclined inlet pipe assembly, the inlet end of which is connected to the output end formed by the pipe assembly; An inclined return water pipe (206) has its inlet end connected to the outlet end of the inclined inlet water pipe group, and the outlet end of the inclined return water pipe (206) is connected to the discharge end formed by the pipe group. The inlet end of the inclined water inlet pipe group is located at the lower end of the inclined water inlet pipe group, and the outlet end of the inclined water inlet pipe group is located at the upper end of the inclined water inlet pipe group. The vertical water inlet pipe assembly includes: A first vertical tube (103); and a first vertical plunger (107) disposed inside the first vertical tube (103) and capable of sliding up and down along the first vertical tube (103). The second vertical tube (104); and the second vertical plunger (108) disposed inside the second vertical tube (104) and capable of sliding up and down along the second vertical tube (104); The third vertical tube (105); and the third vertical plunger (109) disposed in the third vertical tube (105) and capable of sliding up and down along the third vertical tube (105). Among them, there are a first vertical pipe (103), a second vertical pipe (104), and a third vertical pipe (105). The first vertical pipe (103), the second vertical pipe (104), and the third vertical pipe (105) are arranged in parallel and vertically. The inlet ends of the first vertical pipe (103), the second vertical pipe (104), and the third vertical pipe (105) are all connected to the output end of the pipe assembly. The outlet ends of the first vertical pipe (103), the second vertical pipe (104), and the third vertical pipe (105) are connected to the vertical return water pipe (106). The inclined water inlet pipe assembly includes: A first inclined tube (203); and a first inclined plunger disposed inside the first inclined tube (203) and capable of sliding up and down along the first inclined tube (203); The second inclined tube (204); and the second inclined plunger disposed inside the second inclined tube (204) and capable of sliding up and down along the second inclined tube (204); The third inclined tube (205); and the third inclined plunger disposed in the third inclined tube (205) and capable of sliding up and down along the third inclined tube (205); Among them, there are a first inclined pipe (203), a second inclined pipe (204), and a third inclined pipe (205). The first inclined pipe (203), the second inclined pipe (204), and the third inclined pipe (205) are arranged in parallel and at an inclination. The inlet ends of the first inclined pipe (203), the second inclined pipe (204), and the third inclined pipe (205) are all connected to the output end of the pipe assembly. The outlet ends of the first inclined pipe (203), the second inclined pipe (204), and the third inclined pipe (205) are connected to the inclined return water pipe (206). The angle adjustment mechanism includes a vertical moving component (2) and a horizontal moving component, which are vertically distributed. The vertical moving component (2) includes: Vertical slide rail; A vertical slide table is slidably connected to the vertical slide rail and can slide up and down along the vertical slide rail. The upper end of the angle adjustment experimental platform (3) is connected to the vertical slide table. A winch is disposed above the vertical slide rail, and the traction end of the winch is fixedly connected to the vertical slide table; The horizontal movement component includes: Horizontal slide rail (5); A horizontal slide (4) is slidably connected to the horizontal slide rail (5) and can slide horizontally along the horizontal slide rail (5). The lower end of the angle adjustment experimental platform (3) is connected to the horizontal slide (4). A locking mechanism is provided to limit the relative movement of the horizontal slide (4) and the horizontal slider.

2. The plunger air lift drainage collection simulation experimental device according to claim 1, characterized in that, Multiple metal proximity switches (10) are provided on the first vertical tube (103), the second vertical tube (104), the first inclined tube (203), and the second inclined tube (204). The metal proximity switches (10) are distributed along the central axis of the corresponding experimental tube. The metal proximity switches (10) are used to detect the positions of the corresponding first vertical plunger (107), the second vertical plunger (108), the first inclined plunger, and the second inclined plunger.

3. The plunger air lift drainage collection simulation experimental device according to claim 1, characterized in that, The conduit assembly comprises: Water pump (12); Gas source (13); The four-way mixer (14) has its first interface as the output terminal formed by the pipes; The first four-way valve (15) has its first interface connected to the second interface of the four-way mixer (14), the second interface of the first four-way valve (15) is connected to the outlet of the water pump (12), and the third interface of the first four-way valve (15) is connected to a low-pressure drain ball valve. The second four-way connector (16) has its first interface connected to the third interface of the four-way mixer (14), and its second interface is connected to the outlet of the gas source (13). The third four-way connector (17) has a first interface that is the discharge end formed by the pipe assembly. The second interface of the third four-way connector (17) is connected to the third interface of the second four-way connector (16). The third interface of the third four-way connector (17) is connected to the exhaust port (19).

4. The plunger air lift drainage collection simulation experimental device according to claim 3, characterized in that, An electric ball valve (20) is provided between the water pump (12) and the second interface of the first four-way valve (15). A high-pressure drain ball valve is provided between the second port of the four-way mixer (14) and the first port of the first four-way (15); An air inlet valve (22) is provided between the third port of the four-way mixer (14) and the first port of the second four-way mixer (16). A balance ball valve (23) is provided between the third port of the second four-way (16) and the second port of the third four-way (17). An electric regulating valve (24) is provided at the third interface of the third four-way valve (17). Pressure sensors (25) are connected to the fourth port of the four-way mixer (14), the fourth port of the second four-way (16), and the fourth port of the third four-way (17). Temperature sensors are also connected to the fourth port of the four-way mixer (14) and the fourth port of the third four-way (17). A water level sensor (26) is connected to the fourth port of the first four-way (15).

5. The plunger air lift drainage collection simulation experimental device according to claim 4, characterized in that, The inlet ends of the first vertical pipe (103), the second vertical pipe (104), the third vertical pipe (105), the first inclined pipe (203), the second inclined pipe (204), and the third inclined pipe (205) are all equipped with manual test valves (8). An electric test valve (9) is provided at the outlet end of the first vertical pipe (103), the second vertical pipe (104), the third vertical pipe (105), the first inclined pipe (203), the second inclined pipe (204), and the third inclined pipe (205). Both the vertical return water pipe (106) and the inclined return water pipe (206) are connected to an air release valve (11). The angle adjustment mechanism and the pipe are electrically connected to the measurement and control system.

6. The plunger air lift drainage collection simulation experimental device according to claim 2, characterized in that, The first vertical tube (103) and the first inclined tube (203) are 2-3 / 8 inch oil pipe strings; The second vertical tube (104) and the second inclined tube (204) are 2-7 / 8 inch oil pipe strings; The third vertical tube (105) and the third inclined tube (205) are strings of plexiglass tubes; The vertical return water pipe (106) and the inclined return water pipe (206) are 2-3 / 8 inch return water pipes.

7. The plunger air lift drainage collection simulation experimental device according to claim 6, characterized in that, The oil pipe string includes a long oil pipe (1031) and a short oil pipe (1032) connected to its lower end; the plexiglass pipe string includes multiple glass pipes connected in series. The upper ends of the oil pipe string and the plexiglass pipe string are both short-circuited with a buffer (6), the lower ends of the oil pipe string and the plexiglass pipe string are both short-circuited with a locking device (7), and the upper end of the return water pipe is short-circuited with a plug (1061). The buffer (6) includes: The lower end of the pipe is sealed to the upper end of the oil pipe string / the plexiglass pipe string, and the upper end of the pipe is provided with a hose connector. A spring is coaxially disposed inside the tube, with its upper end fixedly connected to the tube, and its lower end applying a downward buffering force to the impacting plunger.

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