CN110424932B - Automatic plunger capturing and releasing device and using method thereof - Google Patents
Automatic plunger capturing and releasing device and using method thereof Download PDFInfo
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- CN110424932B CN110424932B CN201910721242.2A CN201910721242A CN110424932B CN 110424932 B CN110424932 B CN 110424932B CN 201910721242 A CN201910721242 A CN 201910721242A CN 110424932 B CN110424932 B CN 110424932B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/122—Gas lift
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/122—Gas lift
- E21B43/123—Gas lift valves
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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Abstract
The invention relates to the technical field of plunger capturing and throwing, in particular to an automatic plunger capturing and throwing device and a use method thereof.
Description
Technical Field
The invention relates to the technical field of plunger capturing and releasing, in particular to an automatic plunger capturing and releasing device and a using method thereof.
Background
The production of the well is accompanied by liquid production, when the energy production of the gas well is smaller than the critical liquid carrying flow, the liquid can not be carried out effectively, as the production is continued, liquid can be accumulated in the well shaft to form accumulated liquid, the accumulated liquid can not normally produce the gas well, and the gas well can be stopped when serious. Therefore, when the hydrops occurs in the gas well, drainage gas production technology needs to be carried out in time, and stable production of the gas well is ensured.
The plunger gas lift technology is an economic and effective drainage gas production method, a plunger is put in a well shaft of a gas well, the plunger is pushed to periodically run in an oil pipe by using the gas production amount of the gas well, and a mechanical seal interface is formed between lifting gas and liquid by the plunger, so that gas channeling and liquid falling back can be effectively prevented, the liquid slipping effect is reduced, and the liquid drainage efficiency of the gas well is increased.
In the plunger gas lift technology application, the plunger needs to be taken out, detected and replaced regularly, the running plunger is captured by adopting a manual plunger catcher at present, when the plunger gas lift well needs to be closed to reach the condition that the plunger reaches a wellhead, an operator arrives at a gas well site to open the plunger catcher through manual operation, and the plunger reaches the wellhead to be caught after the plunger is opened. When the plunger is put in, an operator manually installs the plunger on the catcher, the plunger is hung by the catcher, and after the well opening process is finished, the catcher is closed by manual operation to release the plunger, so that the plunger falls under the action of gravity. In the manual operation process, the spring force of the manual catcher is not easy to control, so that catching and throwing failure can occur, and the technical application condition is influenced.
In the plunger operation process, the manual plunger catcher is in a closed state, the plunger is not caught after reaching a wellhead, the plunger is stopped at the top under the action of gas well fluid, the plunger is affected by the change of gas flow, vibration can occur, when the gas flow is insufficient to prop against the plunger, the plunger can fall to a valve or a four-way position of a gas production tree, and when serious, the plunger can fall into an oil pipe and continuously vibrate or move up and down under the action of gas.
The manual plunger catcher is adopted, so that the manual operation workload is high, the catcher is poor in putting reliability, and the operation difficulty is increased; in addition, when the plunger falls into the gas production tree or the oil pipe, the airflow channel can be reduced, a throttling effect is formed when the plunger is severe, and hydrate freezing and blocking can occur when the temperature is low in winter; when the plunger with the rubber cylinder structure is applied, the vibration phenomenon can damage the performance of the rubber cylinder, so that the application time of the sealing plunger of the rubber cylinder is shortened.
When the plunger gas lift is adopted for a large-pipe column production gas well, because the plunger weight is large, when a manual catching and throwing device is adopted, manual operation cannot be performed, meanwhile, the production gas volume cannot continuously and effectively push the plunger to the top of the plunger lubricator, and the airflow production channel is seriously blocked by the plunger falling, so that the plunger automatic catching and throwing device convenient to operate needs to be considered, stable catching and automatic throwing after the plunger arrives are realized, and the operation simplicity and the operation reliability of the gas well are ensured.
Therefore, aiming at the application of the plunger gas lift technology of the large tubular column production well, a device capable of automatically capturing and throwing the plunger is developed, and the application of the plunger gas lift technology is also satisfied for a conventional plunger gas lift well.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides an automatic plunger capturing and throwing device and a using method thereof. The invention can realize automatic capturing and throwing of the plunger, and has the characteristics of stable control, simple and convenient operation and the like.
The technical problems solved by the invention can be realized by adopting the following technical scheme:
an automatic plunger capturing and releasing device comprises
The plunger gas lift lubricator is provided with a plunger gas lift well airflow channel on one side wall thereof, an impact block is arranged at the top of the plunger gas lift lubricator, the plunger gas lift well airflow channel is connected with a first switching well Bao Mofa, a first switching well film valve rod is arranged in the first switching well film valve, a plunger is arranged in the plunger gas lift lubricator, a catching groove is formed in the side wall of the plunger, and a catching opening is formed in the other side wall of the plunger gas lift lubricator;
the plunger catch and release device is connected to the side wall of the plunger gas lift lubricator outside the catch port;
the micro electromagnetic valve is communicated with the first switching well film valve and the plunger catch and release device through an air supply pipeline and is also connected with an air source pipeline and an air release pipeline;
and the plunger gas lift controller is connected with the micro electromagnetic valve through a cable.
The micro electromagnetic valve is of a two-position three-way structure, the first port is communicated with an air source pipeline, the second port is communicated with the plunger capturing and throwing device and the first switching well Bao Mofa, and the third port is communicated with a gas leakage pipeline.
The plunger catch and put in device include the casing, one side of casing and catch the outer plunger gas lift lubricator lateral wall fixed connection of mouth, be connected with second switching well Bao Mofa on the lateral wall that the opposite side of casing is located the bottom, be provided with second switching well film valve rod in the second switching well film valve, casing central point puts and is connected with axial and plunger gas lift lubricator vertically articulated shaft, rotates on the articulated shaft and is connected with the catch piece, catch piece one end and second switching well film valve rod fixed connection, the catch piece other end extends to in the catch recess, the catch piece is connected with the articulated shaft position and catch the fixed connection of between the catch piece and the second switching well film valve rod hookup location and catch the spring, the catch spring other end contacts with the shells inner wall, catch the spring and catch piece fixed connection's one side forms and be greater than 90 and be less than 180 contained angles.
The second switching well film valve is communicated with a second port of the micro electromagnetic valve through an air supply pipeline.
The catching spring has reverse elasticity, one end of the catching spring is fixedly connected with the catching block, and the other end of the catching spring is contacted with the inner wall of the shell under the action of the reverse elasticity.
The second switching well film valve rod in the second switching well film valve can move up and down, the second switching well film valve rod moves upwards after the second switching well film valve is inflated, and the second switching well film valve rod moves downwards after the second switching well film valve is deflated.
The first switching well film valve rod in the first switching well film valve can move up and down, the first switching well film valve rod moves upwards after the first switching well film valve is inflated, and the first switching well film valve rod moves downwards after the first switching well film valve is deflated.
At least one catching groove is arranged.
The application method of the automatic plunger capturing and throwing device comprises the steps of:
step one: plunger up catch
Starting a plunger gas lift controller, sending a well opening command by the plunger gas lift controller, opening an air supply pipeline after receiving the command by a micro electromagnetic valve, closing an air discharge pipeline, and inflating a first switching well film valve and a second switching well Bao Mofa by the air supply pipeline, wherein the first switching well film valve rod and the second switching well film valve rod move upwards, the stress applied on a capturing block by the film valve rod is released, and the capturing block rotates anticlockwise under the action of the elastic force of a capturing spring and is ejected out to be in a state of waiting for capturing the plunger; when the first switching well film valve rod and the second switching well film valve rod move upwards, the plunger gas lift well airflow channel is opened, plunger lifting liquid rises, after the plunger gas lift lubricator top is reached, liquid is discharged from the plunger gas lift well airflow channel, the plunger moves reversely after contacting with the impact block, and the other end of the catch block is sprung into a catch groove on the plunger side wall to catch the plunger, and the plunger is in a catch state;
step two: plunger downward throwing
On the basis that the plunger is in a capturing state, a plunger gas lift controller is started to send a well closing command, after receiving the command, a micro electromagnetic valve closes a first port communicated with an air source pipeline and opens a third port communicated with an air release pipeline, air in a first switching well film valve and a second switching well film valve is discharged and released, a first switching well film valve rod and a second switching well film valve rod move downwards, at the moment, a plunger gas lift well airflow channel is closed, a second switching well film valve rod exerts force on a capturing block, the capturing block rotates clockwise to be retracted after overcoming the elasticity of a capturing spring, the plunger is released, the plunger moves downwards under the action of self gravity, and at the moment, the plunger is automatically thrown successfully.
Step three:
and (3) repeating the working processes of the first step and the second step, and performing periodic liquid lifting operation by using plunger gas lifting.
The plunger gas lift controller has a remote control function and is controlled on remote office software.
The beneficial effects of the invention are as follows:
compared with the prior art, the plunger gas lift controller sends a well opening command, the well opening command is transmitted to the micro electromagnetic valve through a cable, the micro electromagnetic valve opens an air supply pipeline, air in the air supply pipeline inflates the first switching well film valve and the plunger catch and release device through the air supply pipeline, at the moment, the first switching well film valve rod in the first switching well film valve moves upwards, the plunger gas lift well airflow channel is opened, plunger lifting liquid rises, after the plunger gas lift blowout preventer top is reached, liquid is discharged from the plunger gas lift well airflow channel, the plunger moves reversely after contacting with the impact block, and the plunger catch and release device catches the plunger through the catch opening, so that the plunger is in a catch state; the plunger gas lift controller sends out a well closing command, the well closing command is transmitted to the micro electromagnetic valve through a cable, the micro electromagnetic valve closes an air source, air in the first switching well film valve and the plunger catch and release device is discharged and released through an air release pipeline connected with the micro electromagnetic valve, a first switching well film valve rod in the first switching well film valve moves downwards, a plunger gas lift well air flow channel is closed, the plunger catch and release device releases the plunger, the plunger moves downwards under the action of self gravity, at the moment, the automatic release of the plunger is successful, the periodic movement of the plunger is realized by repeating the working process, and the automatic catch and release of the plunger are performed in each operation period; the automatic plunger capturing and throwing device provided by the invention adopts gas control of a gas well, can realize automatic plunger capturing and throwing, is stable in control and simple and convenient to operate, realizes automatic plunger capturing and throwing in each operation period, prevents the plunger from dropping to block an airflow channel and hydrate from freezing and blocking, solves the plunger capturing and throwing problem of a plunger gas lift technology of a large tubular column production well, realizes stable production of gas well plunger gas lift drainage and gas production, and simultaneously provides an automatic plunger capturing and throwing application scheme for a conventional plunger gas lift well.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic view of the structure of the automatic plunger catch and release device of the present invention when the plunger is caught.
Fig. 2 is a schematic diagram of the structure of the automatic plunger capturing and releasing device for releasing the plunger.
In the figure: 1-plunger gas lift controller, 2-micro solenoid valve, 3-plunger catch put device, 4-plunger gas lift lubricator, 5-plunger, 6-first switching well film valve, 7-bump block, 8-plunger gas lift well air flow channel, 9-air source pipeline, 10-air supply pipeline, 11-venting pipeline, 12-articulated shaft, 13-catch spring, 14-catch block, 15-second switching well Guan Jingbao film valve rod, 16-first switching well film valve rod, 17-second switching well film valve.
Detailed Description
Example 1:
referring to FIGS. 1 and 2, an automatic plunger catch and release device includes
Plunger gas lift lubricator 4, plunger gas lift lubricator 4 is provided with plunger gas lift well air flow channel 8 on a side wall, plunger gas lift lubricator 4 top is provided with impact block 7, plunger gas lift well air flow channel 8 is connected with first switch well film valve 6, first switch well film valve 6 is provided with first switch well film valve stem 16, plunger 5 is provided in plunger gas lift lubricator 4, catch groove is opened on side wall of plunger 5, catch port is opened on another side wall of plunger gas lift lubricator 4;
the plunger catch and release device 3 is connected to the side wall of the plunger gas lift lubricator 4 outside the catch port;
the micro electromagnetic valve 2 is communicated with the first switching well film valve 6 and the plunger catch and release device 3 through an air supply pipeline 10, and the micro electromagnetic valve 2 is also connected with an air supply pipeline 9 and an air release pipeline 11;
the plunger gas lift controller 1 is connected with the micro electromagnetic valve 2 through a cable.
When in actual use, the method comprises the following steps: the plunger gas lift controller 1 sends out a well opening command, the well opening command is transmitted to the micro electromagnetic valve 2 through a cable, the micro electromagnetic valve 2 opens an air supply pipeline 10, air in the air supply pipeline 9 inflates the first switching well film valve 6 and the plunger capturing and throwing device 3 through the air supply pipeline 10, at the moment, the first switching well film valve rod 16 in the first switching well film valve 6 moves upwards, the plunger gas lift well airflow channel 8 is opened, the plunger 5 lifts up, after reaching the top of the plunger gas lift lubricator 4, the liquid is discharged from the plunger gas lift well airflow channel 8, the plunger 5 moves reversely after contacting with the impact block 7, the plunger capturing and throwing device 3 captures the plunger 5 through a capturing opening, and at the moment, the plunger 5 is in a capturing state; the plunger gas lift controller 1 sends out a well closing command, the well closing command is transmitted to the micro electromagnetic valve 2 through a cable, the micro electromagnetic valve 2 closes an air source, air in the first switching well film valve 6 and the plunger catch and release device 3 is discharged and released through an air release pipeline 11 connected with the micro electromagnetic valve 2, a first switching well film valve rod 16 in the first switching well film valve 6 moves downwards, a plunger gas lift well air flow channel 8 is closed, the plunger catch and release device 3 releases the plunger 5, the plunger 5 moves downwards under the action of self gravity, at the moment, the plunger 5 is successfully released automatically, the periodic movement of the plunger 5 is realized by repeating the working process, and the automatic catch and release of the plunger 5 are carried out in each operation period; the automatic plunger capturing and throwing device provided by the invention adopts gas control of a gas well, can realize automatic capturing and throwing of the plunger 5, is stable in control and simple and convenient to operate, realizes automatic capturing and throwing of the plunger 5 in each operation period, prevents the plunger 5 from dropping to block an airflow channel and a hydrate from freezing and blocking, solves the plunger capturing and throwing problem of a plunger gas lift technology of a large tubular column production well, realizes stable production of gas well plunger gas lift drainage and gas production, and simultaneously provides an automatic plunger capturing and throwing application scheme for a conventional plunger gas lift well.
Example 2:
referring to fig. 1 and 2, the present embodiment is different from embodiment 1 in that: the micro electromagnetic valve 2 is of a two-position three-way structure, the first port is communicated with an air source pipeline 9, the second port is communicated with the plunger capturing and throwing device 3 and the first switching well film valve 6, and the third port is communicated with an air leakage pipeline 11.
When in actual use, the method comprises the following steps: when the plunger 5 catches, the first switching well film valve 6 and the plunger catch and throw-in device 3 are inflated, the air source enters the micro electromagnetic valve 2 through the air source pipeline 9 through the first port, the entering air enters the air supply pipeline 10 through the second port, the air enters the plunger catch and throw-in device 3 and the first switching well film valve 6 through the air supply pipeline 10, at the moment, the third port is closed, namely the air release pipeline 11 is closed, when the plunger 5 is thrown, the first port is closed, namely the air source pipeline 9 is closed, the third port is opened, namely the air release pipeline 11 is opened, the air in the plunger catch and throw-in device 3 and the first switching well film valve 6 enters the micro electromagnetic valve 2 through the air supply pipeline 10, and the air enters the air release pipeline 11 from the third port on the micro electromagnetic valve 2 for air release and discharge.
Example 3:
referring to fig. 1 and 2, the present embodiment is different from embodiment 2 in that: the plunger catch put in device 3 include the casing, the lateral wall fixed connection of the plunger gas lift lubricator 4 outside the one side of casing and the catch mouth, the opposite side of casing is located the lateral wall of bottom and is connected second switching well film valve 17, is provided with second switching well film valve rod 15 in the second switching well Guan Jingbao film valve 17, casing central point puts and runs through and be connected with axial and plunger gas lift lubricator 4 vertically articulated shaft 12, rotates on the articulated shaft 12 and connects catch piece 14, catch piece 14 one end and second switching well film valve rod 15 fixed connection, catch piece 14 other end extends to in the catch recess, the position that catch piece 14 is connected with articulated shaft 12 and catch piece 14 and second switching well film valve rod 15 connected position between fixedly connected with catch spring 13, catch spring 13 other end and casing inner wall contact, catch spring 13 and catch piece 14 fixed connection's one side forms and is greater than 90 and be less than 180 contained angles.
When in actual use, the method comprises the following steps: when the plunger 5 is caught, the second switching well film valve 17 is inflated, the second switching well film valve rod 15 moves upwards, meanwhile, the plunger gas lift well airflow channel 8 is opened, the plunger 5 lifts up, after reaching the top of the plunger gas lift lubricator 4, liquid is discharged from the plunger gas lift well airflow channel 8, the plunger 5 moves reversely after contacting with the impact block 7, meanwhile, after the second switching well film valve rod 15 moves upwards, the second switching well film valve rod 15 drives the catch block 14 to move anticlockwise, meanwhile, the catch block 14 rotates anticlockwise under the action of the elastic force of the catch spring 13, the catch block 14 is ejected, and the other end of the catch block 14 is ejected into a catch groove on the side wall of the plunger 5 to catch the plunger 5, and at the moment, the plunger 5 is in a catch state; when the plunger 5 is thrown in, gas in the first switching well film valve 6 and the second switching well film valve 17 is discharged and leaked, the first switching well film valve rod 16 and the second switching well film valve rod 15 move downwards, at the moment, the plunger gas lift well air flow channel 8 is closed, the second switching well film valve rod 15 drives the catch block 14 to move clockwise, meanwhile, the catch block 14 rotates clockwise under the action of the elastic force of the catch spring 13 to retract, the plunger 5 is released, the plunger 5 moves downwards under the action of self gravity, at the moment, the plunger 5 is automatically thrown in successfully, an included angle larger than 90 degrees and smaller than 180 degrees is formed on one side fixedly connected with the catch spring 13 and the catch block 14, the catch spring 13 is ensured to act on the catch block 14, the catch block 14 can rotate clockwise or anticlockwise normally, the whole device is simple in structure, and the control is simple and convenient.
Example 4:
compared with embodiment 3, this embodiment is different in that: the second switching well film valve 17 is communicated with the second port of the micro electromagnetic valve 2 through the air supply pipeline 10.
Preferably, the catching spring 13 has reverse elastic force, one end of the catching spring 13 is fixedly connected with the catching block 14, and the other end of the catching spring 13 contacts with the inner wall of the shell under the action of the reverse elastic force.
Preferably, the second switching well film valve rod 15 in the second switching well film valve 17 can move up and down, the second switching well film valve rod 15 moves up after the second switching well film valve 17 is inflated, and the second switching well film valve rod 15 moves down after the second switching well Bao Mofa is deflated.
When in actual use, the method comprises the following steps: the second switching well film valve 17 is communicated with the second port of the micro electromagnetic valve 2 through the air supply pipeline 10 to be inflated or deflated, the inner catching spring 13 has certain reverse elasticity when being installed when the whole plunger catching and throwing device 3 is installed, the other end of the catching spring 13 is contacted with the inner wall of the shell under the action of the reverse elasticity and is propped against the inner wall of the shell, the second switching well film valve 15 in the second switching well film valve 17 can move up and down, the second switching well film valve 15 moves up after the second switching well film valve 17 is inflated, the second switching well film valve 15 moves down after the second switching well Bao Mofa is deflated, the second switching well film valve 15 can drive the catching block 14 to rotate clockwise or anticlockwise, the second switching well Bao Mofa can be controlled to switch through air, and the switching well film valve is convenient and fast to use.
Example 5:
compared with embodiment 1, this embodiment is different in that: the first switching well film valve rod 16 in the first switching well film valve 6 can move up and down, the first switching well film valve rod 16 moves upwards after the first switching well film valve 6 is inflated, and the first switching well film valve rod 16 moves downwards after the first switching well film valve 6 is deflated.
When in actual use, the method comprises the following steps: the first switching well film valve rod 16 in the first switching well film valve 6 can move up and down, when the first switching well film valve 6 is inflated, the first switching well film valve rod 16 moves upwards, and after the first switching well film valve 6 is deflated, the first switching well film valve rod 16 moves downwards to control the opening and closing of the plunger gas lift well gas flow channel 8.
Example 6:
compared with embodiment 1, this embodiment is different in that: at least one catching groove is arranged.
When in actual use, the method comprises the following steps: the catching groove is provided with one or more catching blocks 14 for catching the plunger 5, when the plunger 5 is in a catching state, one end of the catching block 14 is clamped into the catching groove on the plunger 5, when the plunger 5 is in a releasing state, the catching block 14 applies force to the catching block 14 through the second switch well film valve rod 15, the catching block 14 is rotated clockwise to be retracted after overcoming the elasticity of the catching spring 13, and the plunger 5 is released.
Example 7:
the method for using the automatic plunger catch and release device comprises any one of the above embodiments 1-5, and the method comprises the following steps:
step one: plunger up catch
Starting the plunger gas lift controller 1, after the plunger gas lift controller 1 sends out a well opening command and the micro electromagnetic valve 2 receives the command, opening the air supply pipeline 10, closing the air release pipeline 11, and inflating the first switching well film valve 6 and the second switching well film valve 17 by the air supply pipeline 10, wherein the first switching well film valve rod 16 and the second switching well film valve rod 15 move upwards, the stress applied on the capturing block 14 by the film valve rod 15 is released, the capturing block 14 rotates anticlockwise under the action of the elastic force of the capturing spring 13 and is ejected, and the state of waiting for capturing the plunger 5 is kept; when the first switching well film valve rod 16 and the second switching well film valve rod 15 move upwards, the plunger gas lift well airflow channel 8 is opened, the plunger 5 lifts up, after the plunger gas lift lubricator 4 is reached, the liquid is discharged from the plunger gas lift well airflow channel 8, the plunger 5 moves reversely after contacting with the impact block 7, and the other end of the catch block 14 is sprung into a catch groove on the side wall of the plunger 5 to catch the plunger 5, and the plunger 5 is in a catch state;
step two: plunger downward throwing
On the basis that the plunger 5 is in a capturing state, the plunger gas lift controller 1 is started to send a well closing command, after receiving the command, the micro electromagnetic valve 2 closes a first port communicated with the gas source pipeline 9, opens a third port communicated with the gas release pipeline 11, gas in the first switching well film valve 6 and the second switching well film valve 17 is discharged and released, the first switching well film valve rod 16 and the second switching well film valve rod 15 move downwards, at the moment, the plunger gas lift well gas flow channel 8 is closed, the second switching well film valve rod 15 applies force to the capturing block 14, the capturing block 14 rotates clockwise to be retracted after overcoming the elastic force of the capturing spring 13, the plunger 5 is released, the plunger 5 moves downwards under the action of self gravity, and at the moment, the plunger 5 is successfully thrown automatically.
Step three:
and (3) repeating the working processes of the first step and the second step, and carrying out periodic liquid lifting operation by gas lifting of the plunger 5.
By using the method, the plunger 5 can be automatically captured and put in, the control is stable, the operation is simple and convenient, the plunger 5 is prevented from falling to block an airflow channel and the hydrate is prevented from freezing and blocking, the plunger capturing and putting in problem of a plunger gas lift technology of a large tubular column production well is solved, and the stable production of gas well plunger gas lift drainage and gas production is realized.
Example 8:
compared with embodiment 6, this embodiment is different in that: the plunger gas lift controller 1 is a controller with a remote control function and realizes control on remote office software.
When in actual use, the method comprises the following steps: the plunger gas lift controller 1 can control the opening and closing of the upper port of the micro electromagnetic valve 2 on remote office software, and the plunger 5 in the whole device can be conveniently and automatically captured and put in during use.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the scope of the knowledge of those skilled in the art without departing from the spirit of the present invention, which is within the scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
The technical solutions between the embodiments may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art that when the combination of technical solutions contradicts or cannot be implemented, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.
Claims (9)
1. An automatic plunger capturing and throwing device is characterized in that: comprising
Plunger gas lift lubricator (4), plunger gas lift well air current passageway (8) are provided with on plunger gas lift lubricator (4) one side wall, plunger gas lift lubricator (4) top is provided with impact block (7), connect first switch well Bao Mofa (6) on plunger gas lift well air current passageway (8), be provided with first switch well film valve rod (16) in first switch well Bao Mofa (6), plunger gas lift lubricator (4) inside is provided with plunger (5), open on the lateral wall of plunger (5) has the catching groove, open on plunger gas lift lubricator (4) another lateral wall has the catching mouth;
the plunger catch and release device (3), the plunger catch and release device (3) is connected to the side wall of the plunger gas lift lubricator (4) outside the catch port;
the micro electromagnetic valve (2), the micro electromagnetic valve (2) is communicated with the first switching well Bao Mofa (6) and the plunger catch and release device (3) through an air supply pipeline (10), and the micro electromagnetic valve (2) is also connected with an air supply pipeline (9) and an air release pipeline (11);
the plunger gas lift controller (1), the plunger gas lift controller (1) is connected with the micro electromagnetic valve (2) through a cable;
the plunger catch put in device (3) include the casing, one side of casing and catch the outer plunger gas lift lubricator (4) lateral wall fixed connection of mouth, be connected with second switching well Bao Mofa (17) on the lateral wall that the opposite side of casing is located the bottom, be provided with second switching well film valve rod (15) in second switching well Bao Mofa (17), casing central point puts through-connection has axial and plunger gas lift lubricator (4) vertically articulated shaft (12), rotates on articulated shaft (12) and is connected with catch piece (14), catch piece (14) one end and second switching well film valve rod (15) fixed connection, catch piece (14) other end extends to in the catching recess, the position that catch piece (14) is connected with articulated shaft (12) and catch piece (14) and second switching well film valve rod (15) connected position between fixedly connected with catch spring (13), catch spring (13) other end and casing inner wall contact, catch spring (13) and catch piece (14) fixed connection's one side and form and be greater than 90 and be less than 180 contained angles.
2. The automatic plunger capturing and delivering device according to claim 1, wherein: the micro electromagnetic valve (2) is of a two-position three-way structure, the first port is communicated with the air source pipeline (9), the second port is communicated with the plunger capturing and throwing device (3) and the first switching well Bao Mofa (6), and the third port is communicated with the air leakage pipeline (11).
3. The automatic plunger capturing and delivering device according to claim 1, wherein: the second switching well Bao Mofa (17) is communicated with the second port of the micro electromagnetic valve (2) through the air supply pipeline (10).
4. The automatic plunger capturing and delivering device according to claim 1, wherein: the catching spring (13) has reverse elasticity, one end of the catching spring (13) is fixedly connected with the catching block (14), and the other end of the catching spring (13) is contacted with the inner wall of the shell under the action of the reverse elasticity.
5. The automatic plunger capturing and delivering device according to claim 1, wherein: the second switching well film valve rod (15) in the second switching well Bao Mofa (17) can move up and down, the second switching well film valve rod (15) moves upwards after the second switching well Bao Mofa (17) is inflated, and the second switching well film valve rod (15) moves downwards after the second switching well Bao Mofa (17) is deflated.
6. The automatic plunger capturing and delivering device according to claim 1, wherein: the first switching well film valve rod (16) in the first switching well Bao Mofa (6) can move up and down, the first switching well film valve rod (16) moves upwards after the first switching well Bao Mofa (6) is inflated, and the first switching well film valve rod (16) moves downwards after the first switching well Bao Mofa (6) is deflated.
7. The automatic plunger capturing and delivering device according to claim 1, wherein: at least one catching groove is arranged.
8. A method of using an automatic plunger catch and release device comprising the automatic plunger catch and release device of any one of claims 1-7, characterized by: the method comprises the following steps:
step one: plunger up catch
Starting a plunger gas lift controller (1), sending out a well opening command by the plunger gas lift controller (1), opening an air supply pipeline (10) after receiving the command by a micro electromagnetic valve (2), closing an air release pipeline (11), inflating a first switching well Bao Mofa (6) and a second switching well Bao Mofa (17) by the air supply pipeline (10), moving a first switching well film valve rod (16) and a second switching well film valve rod (15) upwards, releasing the stress exerted on a capturing block (14) by the second switching well film valve rod (15), and ejecting the capturing block (14) in a anticlockwise rotation mode under the action of the elasticity of a capturing spring (13) to be in a state of waiting for capturing a plunger (5); the first switching well film valve rod (16) and the second switching well film valve rod (15) move upwards, the plunger gas lift well airflow channel (8) is opened, the plunger (5) lifts liquid, after the liquid reaches the top of the plunger gas lift lubricator (4), the liquid is discharged from the plunger gas lift well airflow channel (8), the plunger (5) moves reversely after contacting with the impact block (7), the other end of the catch block (14) is sprung into a catch groove on the side wall of the plunger (5), so that the plunger (5) is caught, and the plunger (5) is in a catching state;
step two: plunger downward throwing
On the basis that the plunger (5) is in a capturing state, a plunger gas lift controller (1) is started to send a well closing command, after receiving the command, a micro electromagnetic valve (2) closes a first port communicated with an air source pipeline (9), opens a third port communicated with an air release pipeline (11), air in a first switching well Bao Mofa (6) and a second switching well Bao Mofa (17) is discharged and released, a first switching well film valve rod (16) and a second switching well film valve rod (15) move downwards, at the moment, a plunger gas lift well airflow channel (8) is closed, the second switching well film valve rod (15) applies force to a capturing block (14), after overcoming the elasticity of a capturing spring (13), the capturing block (14) rotates clockwise to be retracted, the plunger (5) is released, the plunger (5) moves downwards under the action of self gravity, and at the moment, the plunger (5) is automatically released successfully;
step three:
and (3) repeating the working processes of the first step and the second step, and performing periodic liquid lifting operation by gas lifting of the plunger (5).
9. The method for using the automatic plunger capturing and releasing device according to claim 8, wherein the method comprises the following steps: the plunger gas lift controller (1) is a controller with a remote control function and capable of controlling on remote office software.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111927361A (en) * | 2020-08-04 | 2020-11-13 | 中国石油天然气股份有限公司 | Pneumatic intelligent gas well plunger capturing device and capturing and releasing method thereof |
| CN111927362A (en) * | 2020-08-04 | 2020-11-13 | 中国石油天然气股份有限公司 | Plunger gas well electric intelligent capturing plunger device and using method thereof |
| CN114837631A (en) * | 2021-02-01 | 2022-08-02 | 中国石油天然气股份有限公司 | Disc type plunger |
| CN117052355B (en) * | 2023-10-10 | 2024-01-26 | 大庆鑫得丰石油技术有限公司 | Plunger lifting oil-gas well wellhead device |
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