CN110332108B - Split type plunger device for continuous automatic liquid discharge - Google Patents
Split type plunger device for continuous automatic liquid discharge Download PDFInfo
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- CN110332108B CN110332108B CN201910717764.5A CN201910717764A CN110332108B CN 110332108 B CN110332108 B CN 110332108B CN 201910717764 A CN201910717764 A CN 201910717764A CN 110332108 B CN110332108 B CN 110332108B
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- plunger
- lubricator
- controller
- well
- split type
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- 239000007788 liquid Substances 0.000 title claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims description 30
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 17
- 238000007599 discharging Methods 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 59
- 238000010924 continuous production Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/12—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having free plunger lifting the fluid to the surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to a gas well drainage device, in particular to a continuous automatic drainage split type plunger device, which comprises a lubricator, wherein a buffer plunger rod is arranged in the lubricator, split type plungers are separated at least in two stages, a buffer bearing device is arranged below the split type plungers and separated from the split type plungers, a plunger controller is embedded in the pipe wall of the lubricator, the plunger controller is arranged above the split type plungers, a switching well controller is arranged on the pipe wall of the lubricator, and the switching well controller is arranged below the plunger controller. The continuous automatic liquid-discharging split type plunger device realizes plunger descending and reciprocating operation in the well-closing-free process, realizes the most efficient drainage of accumulated liquid at the bottom of the well, avoids the problems of efficiency reduction caused by the falling back of the traditional plunger of liquid discharge Guan Jingshi after fracturing, production stopping caused by incapability of timely discharging liquid in a large-liquid-amount gas well Guan Jingji, and the like, and is particularly suitable for post-fracturing production, high-liquid-amount gas well liquid discharge production, horizontal well liquid discharge production, low-yield gas well liquid discharge production and the like.
Description
Technical Field
The invention relates to a gas well liquid discharge device, in particular to a continuous automatic liquid discharge split type plunger device.
Background
During gas well production, formation water production is accompanied. When the production of a gas well decreases the energy at the bottom of the well, the produced water of the gas layer is carried to the ground, and accumulated liquid occurs in a shaft. The accumulated liquid in the shaft can increase the back pressure on the stratum, reduce the natural gas output of the stratum, and finally completely kill the gas layer to shut in the well, thereby reducing the production of the gas well and reducing the economic loss. Drainage gas production is an effective method for solving the problem of gas well effusion, and is also one of important measures for excavating the production potential of a water-producing gas well and improving the recovery ratio. Plunger gas lift is a common drainage gas production measure and is also a special form of intermittent gas lift. The plunger is used as a solid sealing interface to separate the lifted gas from the lifted liquid, so that the channeling of the gas and the falling back of the liquid are reduced, and the efficiency of lifting the liquid is improved.
The traditional plunger gas lift has the technical contradiction that the plunger is easy to ascend and difficult to descend, and a certain well closing time is needed to enable the plunger to fall back to the bottom of the well. However, longer shut-in times can affect the production of the well, reduce drainage efficiency, and drive the fluid into the formation. Such well shut-in has a greater adverse effect, particularly in high-fluid-yield gas wells. In the application process of the horizontal well, the well is closed to enable liquid in the vertical well bore to flow back to the horizontal section, so that liquid accumulation in the horizontal section can be caused, and in the re-opening process, the liquid in the horizontal section enters the vertical well bore, so that more serious bottom hole back pressure can be caused, and the production reduction and production stopping conditions are more easy to occur. After measures such as hydraulic fracturing, wellbore effusion needs to be removed in time, gas well production is restored, and the traditional plunger cannot meet the requirements of the scene.
Disclosure of Invention
The invention provides a continuous automatic liquid-discharging split type plunger device, which aims to solve the problems that in the prior art, a plunger needs to be shut down when the plunger falls back to the bottom of a well and the yield and liquid-discharging efficiency of a gas well are reduced.
The technical problems to be solved by the invention are realized by the following technical scheme:
A continuous automatic liquid discharge split plunger device comprising: the lubricator is internally provided with: the liquid outlet is arranged on the side wall of the lubricator; a buffer plunger including a first end and a second end; the first end is fixedly connected to the lubricator orifice; the split type plunger is not less than two stages; separating each stage; the buffer bearing device is arranged below the split type plunger and separated from the split type plunger; the plunger controller is embedded in the pipe wall of the lubricator; the plunger controller is arranged between the first end and the second end of the buffering plunger rod; the plunger controller is arranged above the split plunger; the switch well controller is arranged on the pipe wall of the lubricator; the switch well controller is arranged below the plunger controller.
Further, the split plunger includes: a first plunger and a second plunger; the second plunger is arranged between the first plunger and the buffer bearing device.
Further, one end of the first plunger, which is far away from the second plunger, is provided with a salvaging neck.
Further, a speed control ring is arranged at the 1/3-1/2 height position of the first plunger; the speed control ring is embedded in the first plunger through an elastic component.
Further, a sealing step is arranged at one end of the first plunger, which is close to the second plunger.
Further, a sealing ball matched with the sealing step is arranged at the top of one end of the second plunger close to the first plunger; the diameter of the sealing ball is not smaller than the largest diameter opening of the sealing step.
Further, the second plunger includes not less than 2 support rings; the support rings are vertically connected through connecting rods; the supporting ring and the surface of the connecting rod are respectively provided with a through hole.
Further, the distance between the support ring and the lubricator pipe wall is not more than 1/10 of the lubricator inner diameter.
Further, one end of the plunger controller is provided with a push rod; the push rod is connected with a bulge through a spring clamping piece; the push rod is arranged at the outer side of the pipe wall of the lubricator; the bulge is not completely arranged on the outer side of the pipe wall of the lubricator.
Further, the control system comprises a control terminal, and the plunger controller and the switching well controller are both in signal connection with the control terminal.
Compared with the prior art, the invention has the beneficial effects that:
1. The embodiment of the application provides a continuous automatic liquid discharge split type plunger device, which is characterized in that a plunger system is classified into split type plungers, namely the plungers are designed into an upper structure and a lower structure, a buffer receiving device is designed at the bottom of a well, and a buffer ram is designed at the wellhead of the well. Through the components of a whole that can function independently and the combination of plunger, make full use of gas well self energy drainage gas production, when going up, two parts are as an organic whole about the plunger, can effectively seal and form the face of sealing, flowing back production. When the gas well reaches the wellhead, the first plunger and the second plunger impact the buffer plunger rod to realize separation, and the gas well is in continuous production state and descends respectively. At the downhole buffer receiving device, the first plunger and the second plunger recombine to begin the next cycle. The plunger in the embodiment of the application can automatically move up and down in the oil pipe under the self power of the gas well without control, thereby realizing continuous liquid discharge. The technical contradiction that the traditional plunger is easy to ascend and difficult to descend is solved.
2. The control terminal of the embodiment of the application provides two sets of control systems, namely a plunger controller and a switching well controller, wherein the plunger controller controls the plunger to automatically run up and down frequently in a well-closing-free state, and continuously and reciprocally and effectively discharges accumulated liquid at the bottom of the well in a well-closing-free process when the energy of a gas well is insufficient or special technological requirements are met, so that the problems of the conventional plunger system of a plurality of gas wells are avoided, and the continuous reciprocal movement of the plunger in a shaft is realized in the process of continuously producing the gas well without closing the well and in the gas well. The plunger device can realize production control and improve usability.
3. The embodiment of the application provides a continuous automatic liquid-discharging split type plunger device, which realizes plunger descending and reciprocating operation in the well-shutting-free process, controls the frequency and period of plunger operation through a plunger controller, realizes the most efficient drainage of accumulated liquid at the bottom of the well, reduces self abrasion of the device, effectively avoids the problems of efficiency reduction caused by the traditional plunger falling back of liquid discharge Guan Jingshi after fracturing, possible production stopping caused by incapability of timely drainage of liquid in a large-liquid-amount gas well Guan Jingji, and the like, avoids the problem of liquid flow back to a horizontal section of a vertical shaft when the vertical well is closed during horizontal well application, avoids the problem of production reduction and production stopping caused by incapability of drainage of small liquid in a low-yield gas well, and is particularly suitable for post-fracturing production, large-liquid-amount gas well liquid drainage production, horizontal well liquid drainage production, low-yield gas well liquid drainage production and the like.
Drawings
FIG. 1 is a schematic view of a continuous automatic liquid discharge split type plunger device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a plunger controller of a split type plunger device for continuous automatic liquid discharge according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a first plunger structure of a split type plunger device for continuous automatic liquid discharge according to an embodiment of the present application;
Fig. 4 is a schematic view of a second plunger structure of a split plunger device for continuous automatic liquid discharge according to an embodiment of the present application.
In the figure: 1. lubricator; 11. a liquid outlet; 2. buffering the striker; 3. a split plunger; 31. a first plunger; 311. fishing the neck; 312. a speed control ring; 313. a sealing step; 32. a second plunger; 321. a sealing ball; 322. a support ring; 323. a connecting rod; 324. a through hole; 4. a buffer receiving device; 5. a control terminal; 51. a plunger controller; 511. a push rod; 512. a spring clip; 513. a protrusion; 52. and a switching well controller.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but embodiments of the present invention are not limited thereto.
Example 1:
In order to solve the technical problems that the plunger in the traditional plunger gas lift in the prior art is required to be shut down when falling back to the bottom of the well, and the yield and the liquid drainage efficiency of a gas well are reduced, as shown in fig. 1, the embodiment provides a split type continuous automatic liquid drainage split type plunger device, a plunger system is classified into split type plungers, the energy of the gas well is fully utilized for drainage and gas production through split and combination of the plungers, the accumulated liquid at the bottom of the well is continuously and reciprocally and effectively discharged in the process of no well, and the problems of the current gas well plunger system are solved.
A split continuous automatic liquid discharge split plunger device, as shown in fig. 1, comprising: the lubricator 1 is internally provided with: the liquid outlet 11 is arranged on the side wall of the lubricator 1; the buffer plunger rod 2 comprises a first end and a second end, wherein the first end is fixedly connected with the orifice of the lubricator 1, the split type plunger rod 3 is not less than two stages, the split type plunger rod 3 is separated between each stage, the buffer bearing device 4 is arranged below the split type plunger rod 3 and separated from the split type plunger rod 3, the plunger rod controller 51 is embedded into the pipe wall of the lubricator 1, the plunger rod controller 51 is arranged between the first end and the second end of the buffer plunger rod 2, the switching well controller 52 is arranged on the pipe wall of the lubricator 1, and the switching well controller 52 is arranged below the plunger rod controller 51.
Specifically:
Lubricator 1, as shown in fig. 1, lubricator 1 is a hollow anticorrosion pipe, and the upper end is closed, and lubricator 1 lower extreme is opened for discharge underground hydrops etc. underground liquid receives enough energy, forms the liquid film and rises through the lubricator, is discharged by the leakage fluid dram on the lubricator lateral wall.
In particular, when the plunger reaches the liquid discharge port and blocks the liquid discharge port during liquid discharge, the liquid discharge ports of the present embodiment are preferably two or more, so that the liquid discharge port is prevented from being insufficiently unblocked due to the fact that the split plunger 3 reaches the liquid discharge port.
As shown in fig. 1 and 2, specifically, the first end of the buffer ram 2 is fixedly connected to the orifice of the lubricator 1, the buffer ram 2 is arranged in the orifice of the lubricator 1 and used for limiting the upward-running position of the split plunger 3, and when the split plunger 3 moves up to the orifice of the lubricator 1, the split plunger 3 is separated from each stage of the split plunger 3 under the impact of the buffer ram 2 and then falls down respectively.
The buffer receiving device 4 is shown in fig. 1, and the buffer receiving device 4 is arranged below the split type plunger 3 and separated from the split type plunger 3, when the split type plunger 3 is impacted by the buffer plunger rod 2 and then falls down in sequence, the buffer receiving device 4 reaching the bottom of the lubricator 1 is recombined, and the split type plunger 3 is repeatedly arranged in the lubricator 1 under the cooperation of the buffer plunger rod 2 and the buffer receiving device 4, so that liquid discharge production is continuously realized.
The control terminal 5 is a split type plunger 3 liquid discharging double-control system, and consists of two sets of controllers, namely a plunger controller 51 and a switch well controller 52, wherein the plunger controller 51 and the switch well controller 52 are in signal connection with the control terminal 5, and particularly are electric signals. The plunger controller 51 and the switch well controller 52 realize the integrated optimization of linkage and technology through a set of control system, and the operation is simpler and more convenient.
The control terminal 5 of the embodiment provides two sets of control systems, namely a plunger controller 51 and a switching well controller 52, wherein the plunger controller 51 controls the plunger to automatically move up and down frequently in a well-closing state, and the switching well controller 52 realizes production control when the energy of a gas well is insufficient or special technological requirements, and simultaneously improves the usability of the plunger device of the embodiment. The bottom-hole effusion is effectively discharged continuously and reciprocally in the well-closing-free process, the problems of a plurality of gas well plunger systems at present are avoided, and the plunger is continuously and reciprocally moved in the well shaft in the processes of gas well closing-free and gas well continuous production. Plunger controller 51, as shown in fig. 2, plunger controller 51 is embedded in the wall of lubricator 1, plunger controller 51 is arranged between the first end and the second end of buffer plunger 2, one end of plunger controller 51 is provided with a push rod 511, push rod 511 is connected with a bulge 513 through a spring clip 512, bulge 513 is specifically a steel ball or other arbitrary shape structure, push rod 511 is arranged on the outer side of lubricator 1 wall, bulge 513 is not completely arranged on the outer side of lubricator 1 wall, that is, push rod 511 is arranged outside lubricator 1, part of the front end of bulge 513 is arranged in lubricator 1, and the rest part of the bulge passes through the wall of lubricator 1 and is arranged outside lubricator 1. Stopping and restarting of the operation of the split plunger 3 is achieved by the spring pushing projection 513. The plunger controller 51 controls the entire draining process by controlling the first plunger 31.
The switching well controller 52 is provided on the pipe wall of the lubricator 1, and the switching well controller 52 is provided below the plunger controller 51, as shown in fig. 1. Specifically, the switching well controller 52 is installed in a pipeline slightly downstream of the lubricator 1, and the switching of gas well production is realized by the action of a switching valve.
As shown in fig. 1, 3 and 4, the split plunger 3 includes a first plunger 31 and a second plunger 32, the second plunger 32 is disposed between the first plunger 31 and the buffer receiving device 4, and the plunger controller 51 is disposed above the split plunger 3. Wherein:
The first plunger 31, as shown in figure 3, has a fishing neck 311 at the end of the first plunger 31 remote from the second plunger 32 for lasso when the apparatus is lowered into the well or fished up. Particularly, the inner cavity of the first plunger 31 is hollow, the inner cavity is communicated up and down, a speed control ring 312 is arranged at the 1/3-1/2 height position of the first plunger 31, and the descending speed of the first plunger 31 in the production state of different yield gas wells is controlled by the size of the middle opening of the speed control ring 312, so that the time of one liquid discharge circulation period is controlled. The speed control ring 312 is embedded in the first plunger 31 through an elastic component, specifically, the speed control ring 312 is fixed in the first plunger 31 through an upper clip spring, a lower clip spring or threads and other forms, and meanwhile, the upper part of the speed control ring 312 is large in chamfer angle, so that the wellhead buffer ram 2 is ensured to enter smoothly.
The end of the first plunger 31 near the second plunger 32 is provided with a sealing step 313 for matching with the sealing ball 321 of the second plunger 32 to form a whole.
The second plunger 32, as shown in fig. 4, the second plunger 32 includes no less than 2 supporting rings 322, the distance between the supporting rings 322 and the wall of the lubricator 1 is no greater than 1/10 of the inner diameter of the lubricator 1, so that the inner wall of the lubricator 1 is just separated from the outer surface of the second plunger 32 to be optimal, the second plunger 32 has a self-righting function, and the righting in the lubricator 1 is realized through the part of the second plunger 32 close to the inner diameter of the lubricator 1, so that the contact between the lower part of the first plunger 31 and the upper part of the second plunger 32 is more beneficial to realizing sealing.
The support ring 322 is vertically connected by a connecting rod 323, and the surfaces of the support ring 322 and the connecting rod 323 are respectively provided with a through hole 324. The second plunger 32 with the righting function is provided with enough through holes 324, so that the gas well can still descend in the well opening process, and meanwhile, the descending speed of the first plunger 31 and the second plunger 32 is controlled by optimizing the number and the size of the through holes 324, so that the liquid discharging performance of the split type continuous automatic liquid discharging split type plunger device is optimized.
The top of one end of the second plunger 32, which is close to the first plunger 31, is provided with a sealing ball 321 matched with the sealing step 313, the diameter of the sealing ball 321 is not smaller than the maximum diameter opening of the sealing step 313, and after the sealing ball 321 is combined with each other, the sealing ball is not completely embedded into the sealing step 313 or is embedded into the sealing step 313, and then shake or slide is generated due to small volume, so that the self-righting effect is not achieved. When the split plunger 3 is up, the first plunger 31 is integrated with the second plunger 32, and the sealing ball 321 of the second plunger 32 is fitted into the sealing step 313 at the bottom of the first plunger 31, so that the first plunger 31 is integrated with the second plunger 32.
The split type continuous automatic liquid draining split type plunger device provided by the embodiment is characterized in that a plunger system is classified into split type plungers 3, the energy of a gas well is fully utilized for draining, gas production and the like through split and combination of the plungers, bottom-hole effusion is continuously and reciprocally and effectively discharged in the well closing-free process, the problems of the conventional plunger system of a plurality of gas wells are avoided, and the continuous reciprocating motion of the plungers in a shaft is realized in the processes of gas well closing and gas well continuous production.
The split type continuous automatic liquid draining split type plunger device provided by the embodiment realizes plunger descending and reciprocating operation in the well shutting-free process, controls the frequency and period of plunger operation through the plunger controller 51, realizes the most efficient drainage of accumulated liquid at the bottom of the well, reduces self abrasion of the device, effectively avoids the problems that the efficiency of liquid draining Guan Jingshi after fracturing is reduced due to the traditional plunger falling back, the liquid in a large-liquid-amount gas well Guan Jingji cannot be timely drained to possibly cause production stopping and the like, avoids the problem that the liquid in a vertical shaft of a shut-in well flows back to a horizontal section when the horizontal well is applied, avoids the problem of production reduction and production stopping caused by the fact that the liquid in a low-yield gas well cannot be drained, and is particularly suitable for the production reduction and production stopping caused by the liquid draining of a high-liquid-amount gas well after fracturing, the liquid draining production of the horizontal well, the liquid draining production of the low-yield gas well and the like.
Example 2:
based on the split type continuous automatic liquid draining split type plunger device disclosed in embodiment 1, this embodiment further discloses the operating principle of split type continuous automatic liquid draining split type plunger device, specifically as follows:
1) The split plunger is upward:
In the normal open well process of the gas well, although the gas flow and the liquid in the well are blocked up, the second plunger 32 still descends to reach the buffer bearing device 4, then the first plunger 31 arrives, the sealing step 313 at the lower end of the first plunger 31 is combined with the sealing ball 321 at the top of the second plunger 32, the first plunger 31 and the second plunger 32 are combined, and the buffer bearing device 4 is fixed at the bottom position of the oil pipe and kept still. The first plunger 31 and the second plunger 32 are combined to carry liquid out of the bottom of the well under the pushing of the air flow.
2) The split plunger descends:
When the split plunger 3 reaches the wellhead, under the impact of the wellhead buffer plunger rod 2, the second plunger 32 is separated from the first plunger 31 and falls down respectively to reach the bottom hole buffer receiving device 4 for recombination, and the process is repeated, so that the liquid discharge production is continuously realized.
3) And (3) split type plunger operation control:
The control terminal 5 sends an instruction, and the push rod 511 in the plunger controller 51 pushes the spring clamping piece 512 to enable the protrusion 513 to protrude out of the wall of the lubricator 1, at this time, when the first plunger 31 reaches the wellhead, the protrusion 513 prevents the first plunger 31 from descending, so that the running period of the first plunger 31 in the well can be controlled and stopped at will through the plunger controller 51. Meanwhile, the descending speed of the first plunger 31 in the lubricator 1 is controlled by the size of the opening of the speed control ring 312 in the first plunger 31, and the running period of the second plunger 32 can be changed by matching with the through hole 324 in the second plunger 32, so that the running period of the split plunger 3 is controlled.
At the same time, the control terminal 5 monitors the oil pipe pressure and the casing pressure, and when the casing pressure is greater than the oil pipe pressure set value, the plunger controller 51 retracts the push rod 511 and the spring clamp 512 to retract the projection 513, and the first plunger 31 starts to automatically reciprocate. When the pressure difference between the sleeve and the oil pipe is smaller than the set value, the plunger controller 51 pushes the push rod 511 and the spring clamping piece 512, so that the bulge 513 protrudes out of the inner wall of the lubricator 1, the first plunger 31 stops reciprocating operation, and system abrasion is reduced.
4) And (3) controlling a switching well:
When the energy of the gas well is reduced to be extremely low, and continuous production is insufficient to push the split plunger 3 upwards, the control terminal 5 gives an instruction, the switch well controller 52 acts to shut off production, and the shut-in energy is recovered at the moment. The control terminal 5 may issue a command to open and close the well controller 52 when the well pressure is restored to be high enough by detecting the pressure or the like, and the well resumes the production of the liquid discharge.
In the split type continuous automatic liquid draining split type plunger device of the embodiment, a plunger system is classified into split type plungers 3, namely the plungers are designed into an upper structure and a lower structure, a buffer bearing device 4 is arranged at the bottom of a well, and a buffer ram 2 is arranged at the top of the well. Through the components of a whole that can function independently and the combination of plunger, make full use of gas well self energy drainage gas production, when going up, two parts are as an organic whole about the plunger, can effectively seal and form the face of sealing, flowing back production. When reaching the wellhead, the first plunger 31 and the second plunger 32 strike the buffer plunger rod 2 to realize separation, and the separation respectively descends under the continuous production state of the gas well. At the downhole buffer receptacle 4, the first plunger 31 and the second plunger 32 recombine, starting the next cycle. The technical contradiction that the traditional plunger is easy to ascend and difficult to descend is solved, the plunger can be controlled without being driven by the self power of the gas well, automatically moves up and down in the oil pipe, and continuous liquid discharge is realized.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (5)
1. A split plunger device for continuous automatic liquid discharge, comprising:
The lubricator is internally provided with:
the liquid outlet is arranged on the side wall of the lubricator;
a buffer plunger including a first end and a second end; the first end is fixedly connected to the lubricator orifice;
the split type plunger is not less than two stages; separating each stage;
The buffer bearing device is arranged below the split type plunger and separated from the split type plunger;
the plunger controller is embedded in the pipe wall of the lubricator; the plunger controller is arranged between the first end and the second end of the buffering plunger rod; the plunger controller is arranged above the split plunger;
the switch well controller is arranged on the pipe wall of the lubricator; the switch well controller is arranged below the plunger controller;
Wherein, split type plunger includes: a first plunger and a second plunger; the second plunger is arranged between the first plunger and the buffer bearing device; one end of the first plunger, which is close to the second plunger, is provided with a sealing step; a sealing ball matched with the sealing step is arranged at the top of one end of the second plunger, which is close to the first plunger; the diameter of the sealing ball is not smaller than the largest diameter opening of the sealing step; the first plunger is hollow in inner cavity and penetrates up and down, a speed control ring is arranged at the 1/3-1/2 height position of the first plunger, and the descending speed of the first plunger in the production state of different production gas wells is controlled by the size of an opening in the middle of the speed control ring; the upper part of the speed control ring is provided with a large chamfer; the second plunger includes not less than 2 support rings; the support rings are vertically connected through connecting rods; the supporting ring and the surface of the connecting rod are respectively provided with a through hole.
2. The continuous automatic liquid discharge split plunger device of claim 1, wherein the end of the first plunger remote from the second plunger is provided with a fishing neck.
3. The continuous automatic drain split plunger device of claim 1, wherein the support ring is no more than 1/10 of the inner diameter of the lubricator from the lubricator wall.
4. The continuous automatic liquid discharge split type plunger device according to claim 1, wherein one end of the plunger controller is provided with a push rod; the push rod is connected with a bulge through a spring clamping piece; the push rod is arranged at the outer side of the pipe wall of the lubricator; the bulge is not completely arranged on the outer side of the pipe wall of the lubricator.
5. The continuous automatic drain split plunger device of claim 1, comprising a control terminal, wherein the plunger controller and the switching well controller are both in signal connection with the control terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717764.5A CN110332108B (en) | 2019-08-05 | 2019-08-05 | Split type plunger device for continuous automatic liquid discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717764.5A CN110332108B (en) | 2019-08-05 | 2019-08-05 | Split type plunger device for continuous automatic liquid discharge |
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| CN110593823A (en) * | 2019-10-18 | 2019-12-20 | 中国石油集团西部钻探工程有限公司 | Uninterrupted plunger water drainage gas production device and uninterrupted plunger water drainage gas production method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4211279A (en) * | 1978-12-20 | 1980-07-08 | Otis Engineering Corporation | Plunger lift system |
| US5992517A (en) * | 1997-10-17 | 1999-11-30 | Mcanally; Charles W. | Downhole reciprocating plunger well pump system |
| US6209637B1 (en) * | 1999-05-14 | 2001-04-03 | Edward A. Wells | Plunger lift with multipart piston and method of using the same |
| RU2206730C1 (en) * | 2002-07-18 | 2003-06-20 | Карсей Руслан Дмитриевич | Method of pulse-jet stimulation of well and producing formation and device for method embodiment |
| CN201173299Y (en) * | 2008-04-10 | 2008-12-31 | 北京欧洛普过滤技术开发公司 | Gas-liquid type governing valve |
| KR100970547B1 (en) * | 2010-02-24 | 2010-07-16 | 배상수 | Manufacture equipment of a weather strip for the car |
| CN203384016U (en) * | 2013-08-13 | 2014-01-08 | 中国石油化工股份有限公司 | Movable cylinder type blocking-resistant oil pump |
| CN103670337A (en) * | 2012-09-18 | 2014-03-26 | 中国石油天然气股份有限公司 | Split plunger device for non-shut-in continuous production |
| RU2534690C1 (en) * | 2013-09-23 | 2014-12-10 | Ильдар Анварович Хасаншин | Universal wellhead packer |
| CN109499145A (en) * | 2019-01-11 | 2019-03-22 | 郑州碧兴环保科技有限公司 | A kind of efficient device for removing dirty impurities in water |
| CN210196000U (en) * | 2019-08-05 | 2020-03-27 | 宋艳艳 | Split type plunger device capable of continuously and automatically discharging liquid |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7475731B2 (en) * | 2004-04-15 | 2009-01-13 | Production Control Services, Inc. | Sand plunger |
| US8607880B2 (en) * | 2005-02-24 | 2013-12-17 | Well Master Corp | Gas lift plunger acceleration arrangement |
| US9587444B2 (en) * | 2013-12-20 | 2017-03-07 | Weatherford Technology Holdings, Llc | Dampener lubricator for plunger lift system |
-
2019
- 2019-08-05 CN CN201910717764.5A patent/CN110332108B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4211279A (en) * | 1978-12-20 | 1980-07-08 | Otis Engineering Corporation | Plunger lift system |
| US5992517A (en) * | 1997-10-17 | 1999-11-30 | Mcanally; Charles W. | Downhole reciprocating plunger well pump system |
| US6209637B1 (en) * | 1999-05-14 | 2001-04-03 | Edward A. Wells | Plunger lift with multipart piston and method of using the same |
| RU2206730C1 (en) * | 2002-07-18 | 2003-06-20 | Карсей Руслан Дмитриевич | Method of pulse-jet stimulation of well and producing formation and device for method embodiment |
| CN201173299Y (en) * | 2008-04-10 | 2008-12-31 | 北京欧洛普过滤技术开发公司 | Gas-liquid type governing valve |
| KR100970547B1 (en) * | 2010-02-24 | 2010-07-16 | 배상수 | Manufacture equipment of a weather strip for the car |
| CN103670337A (en) * | 2012-09-18 | 2014-03-26 | 中国石油天然气股份有限公司 | Split plunger device for non-shut-in continuous production |
| CN203384016U (en) * | 2013-08-13 | 2014-01-08 | 中国石油化工股份有限公司 | Movable cylinder type blocking-resistant oil pump |
| RU2534690C1 (en) * | 2013-09-23 | 2014-12-10 | Ильдар Анварович Хасаншин | Universal wellhead packer |
| CN109499145A (en) * | 2019-01-11 | 2019-03-22 | 郑州碧兴环保科技有限公司 | A kind of efficient device for removing dirty impurities in water |
| CN210196000U (en) * | 2019-08-05 | 2020-03-27 | 宋艳艳 | Split type plunger device capable of continuously and automatically discharging liquid |
Non-Patent Citations (1)
| Title |
|---|
| 矿用液压支架立柱和千斤顶常见故障浅谈;宋艳艳;;能源与节能;20180719(07);全文 * |
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