CN113279732A - Compression type diameter-variable plunger - Google Patents
Compression type diameter-variable plunger Download PDFInfo
- Publication number
- CN113279732A CN113279732A CN202110129280.6A CN202110129280A CN113279732A CN 113279732 A CN113279732 A CN 113279732A CN 202110129280 A CN202110129280 A CN 202110129280A CN 113279732 A CN113279732 A CN 113279732A
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- CN
- China
- Prior art keywords
- plunger
- motor
- transmission rod
- transmission
- plug part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000006835 compression Effects 0.000 title claims abstract description 14
- 238000007906 compression Methods 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 61
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 229920001973 fluoroelastomer Polymers 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 16
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical class C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
Images
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
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Geophysics (AREA)
- Actuator (AREA)
Abstract
The invention belongs to the field of oil and gas field wellhead equipment, and particularly relates to a compression type variable-diameter plunger. This plunger includes: a plunger transmission cylinder, in which a motor is arranged; the transmission device comprises a transmission rod and a sliding block, the transmission rod is connected with the motor, the motor can drive the transmission rod to rotate, and the sliding block is arranged on the outer side of the transmission rod and can move along the axial direction of the transmission rod; the tubular plug part is sleeved outside the transmission rod, the upper end of the tubular plug part is fixedly connected with the plunger transmission cylinder, and the lower end of the tubular plug part is fixedly connected with the sliding block; when the motor drives the transmission rod to rotate, the sliding block can move along the direction of the motor to drive the plug part to increase in radial size. The invention has the advantages that: by arranging the plug part which can be changed in the radial direction, the liquid discharging efficiency is obviously improved; the plug part is extruded by the sliding block to change diameter so as to be tightly attached to the wall of the oil pipe, and the leakage of liquid carrying is reduced.
Description
Technical Field
The invention belongs to the field of oil and gas field wellhead equipment, and particularly relates to a compression type variable-diameter plunger.
Background
Along with the gas well exploitation entering the middle and later stages, the water in the shaft is accumulated due to the propelling of bottom water in the well and the operation measures such as fracturing and acidizing. And the yield and the pressure of the gas well are gradually reduced, the liquid carrying capacity is gradually deteriorated, and liquid accumulation and water flooding at the bottom of the well are more and more frequent.
Along with the exhaustion of the stratum energy of the gas field, the effect of the main drainage and production process is gradually reduced year by year, so that the accumulated liquid of the gas well cannot be timely discharged, and the stable yield capability of the gas well is influenced. The gas well is seriously polluted by partial liquid drainage gas production process (such as a foam drainage gas production process), and the applicability of a process system is gradually deteriorated.
At present, the commonly used plunger type gas lift needs to change the ground flow, frequently closes the well, forms intermittent production, influences the yield, has large leakage of liquid carrying, and has low liquid discharge efficiency.
The existing intelligent plunger rod adopts pressure difference to control the plunger to change the diameter, has high requirement on bottom hole pressure and has low reliability.
Disclosure of Invention
The present invention aims to overcome the disadvantages of the prior art and to provide a compression type variable diameter plunger.
In order to achieve the purpose, the invention provides the following technical scheme:
a compression type variable diameter plunger comprising:
a plunger transmission cylinder, in which a motor is arranged;
the transmission device comprises a transmission rod and a sliding block, the transmission rod is connected with the motor, the motor can drive the transmission rod to rotate, and the sliding block is arranged on the outer side of the transmission rod and can move along the axial direction of the transmission rod;
the tubular plug part is sleeved outside the transmission rod, the upper end of the plug part is fixedly connected with the plunger transmission cylinder, and the lower end of the plug part is fixedly connected with the sliding block;
when the motor drives the transmission rod to rotate, the sliding block can move along the direction of the motor to drive the plug portion to be enlarged in the radial direction.
Furthermore, the top of the plunger transmission cylinder is connected with a plunger control cylinder, the top of the plunger control cylinder is sealed, the bottom of the plunger control cylinder is open, and a controller is arranged in the plunger control cylinder.
Further, the plunger transmission cylinder comprises a first cavity and a second cavity, a sensor is arranged in the first cavity, a motor is arranged in the second cavity, and the controller is in signal connection with the sensor and the motor respectively.
Further, the sensor is used for collecting underground pressure and temperature parameters and feeding the underground pressure and temperature parameters back to the controller for storage, and meanwhile, the controller controls the motor to work.
Further, plunger control barrel top fixedly connected with plunger head, the plunger head includes integrated into one piece's battery compartment and salvages the head, be equipped with the battery in the battery compartment.
Furthermore, a groove is formed in the middle of the fishing head and used for fishing the variable-diameter plunger.
Furthermore, the bottom of the plunger transmission cylinder is fixedly connected with a joint, and the joint is fixed with the upper end of the plug part.
Further, an output shaft of the motor penetrates through the joint to be fixedly connected with the transmission rod.
The plug portion is made of one of fluororubber, nitrile rubber and hydrogenated butadiene-acrylonitrile rubber.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
1. by arranging the plug part which can be changed in the radial direction, the liquid discharging efficiency is obviously improved;
2. the plug part is extruded by the sliding block to change diameter so as to be tightly attached to the wall of the oil pipe, so that the leakage of liquid carrying is reduced;
3. the invention is also provided with a sensor and a controller, the sensor can collect underground pressure and temperature parameters and feed back the parameters to the controller, and the controller controls the motor according to the fed back parameters to realize reducing and discharging, so that the intelligent reducing can be effectively realized, and the efficiency is higher.
Drawings
FIG. 1 is a schematic view of an apparatus of the present invention;
FIG. 2 is a schematic view of the plunger descending configuration of the present invention;
FIG. 3 is a schematic view of the ascending configuration of the plunger of the present invention.
Wherein: 1 is a plunger transmission cylinder; 11 is a motor; 12 is a sensor; 2 is a transmission device; 21 is a transmission rod; 22 is a slide block; 3 is a plug part; 4 is a plunger control cylinder; 41 is a controller; 5 is a plunger head; 51 is a battery chamber; 52 is a fishing head; 6 is a joint; 7 is a buffer device; 71 is a mandrel; 72 is a spring; 73 is a buffer column; 74 is a fixed cover.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, a compression type variable diameter plunger includes: a plunger transmission cylinder 1, in which a motor 11 is provided; the transmission device 2 comprises a transmission rod 21 and a sliding block 22, the transmission rod 21 is connected with the motor 11, the motor 11 can drive the transmission rod 21 to rotate, and the sliding block 22 is arranged on the outer side of the transmission rod 21 and can move along the axial direction of the transmission rod 21; the tubular plug part 3 is sleeved outside the transmission rod 21, the upper end of the plug part is fixedly connected with the plunger transmission cylinder 1, and the lower end of the plug part is fixedly connected with the sliding block 22;
when the electric motor 11 drives the transmission rod 21 to rotate, the slide block 22 can move along the direction of the electric motor 11, so that the plug part 3 is driven to be enlarged in the radial direction. In particular, the transmission 2 may be a lead screw slider assembly.
Further, a plunger control cylinder 4 is connected to the top of the plunger transmission cylinder 1, the top of the plunger control cylinder 4 is sealed, the bottom of the plunger control cylinder is open, and a controller 41 is arranged inside the plunger control cylinder. Specifically, the plunger transmission cylinder 1 is connected with the plunger control cylinder 4 through threads.
Further, the plunger transmission cylinder 1 comprises a first cavity and a second cavity, and specifically, the first cavity and the second cavity are integrally formed; a sensor 12 is arranged in the first cavity, a motor 11 is arranged in the second cavity, and the controller 41 is in signal connection with the sensor 12 and the motor 11 respectively.
Further, the sensor 12 is used for collecting downhole pressure and temperature parameters and feeding the parameters back to the controller 41 for storage, and the controller 41 controls the motor 11 to operate.
Further, a plunger head 5 is fixedly connected to the top of the plunger control barrel 4, the plunger head 5 comprises a battery compartment 51 and a fishing head 52 which are integrally formed, and a battery is arranged in the battery compartment 51. Specifically, the plunger control barrel 4 is provided with a protrusion on the top, the outside of the protrusion is provided with a screw thread, the plunger control barrel 4 is connected with the plunger head 5 through the screw thread, and the battery in the battery compartment 51 is fixed in the battery compartment 51 through the protrusion.
Further, a groove is formed in the middle of the fishing head 52 and used for fishing the variable-diameter plunger.
Further, the bottom of the plunger transmission cylinder 1 is fixedly connected with a joint 6, and the joint 6 is also fixed with the upper end of the plug part 3. Specifically, the top of the joint 6 is in threaded connection with the plunger transmission cylinder 1, and the bottom of the joint is fixed with the plug part 3 through gluing.
Further, an output shaft of the motor 11 passes through the joint 6 and is fixedly connected with the transmission rod 21. Specifically, the output shaft of the motor 11 is fixedly connected by a transmission rod 21
The plug 3 is made of a high temperature and wear resistant material, and specifically, the plug 3 is made of one of fluororubber, nitrile rubber and hydrogenated butadiene-acrylonitrile rubber, or PTFE and copper powder.
Specifically, when the radial size of the plug part is increased, the distance between the plug part and the inner diameter of the oil pipe is 0.15-0.5 mm, so that the liquid discharge rate can be ensured, and the plunger can smoothly move upwards.
Further, the bottom of the transmission rod 21 is further provided with a buffer device 7, the buffer device 7 comprises a buffer groove, a core shaft 71 is fixed in the buffer groove through internal threads, a spring 72 is arranged on the outer side of the core shaft 71, and the top of the spring is fixed to the top of the buffer groove.
Further, a buffer column 73 is sleeved on the outer side of the mandrel 71 and can axially move along the mandrel 71; a fixing cover 74 is screwed to the bottom of the buffer tank, and the top of the buffer column 73 is fixed in the buffer tank.
When the plunger falls to the bottom of the oil pipe, the buffer column contacts the bottom, impact force can be buffered through the action of the spring, and the damage degree of the plunger is reduced.
The working principle of the invention is as follows: referring to fig. 2 and 3, a plunger is put into an oil pipe, the plunger falls down on the inner wall of the oil pipe under the action of gravity, the pressure sensor 12 detects that the pressure changes suddenly in the falling process, which indicates that the pressure has entered the accumulated liquid in the oil pipe, when the pressure reaches a set value, the sensor 12 sends a signal to the controller 41, the controller 41 controls the motor 11 to work, the motor 11 drives the transmission rod 21 to rotate, so that the slide block 22 moves upwards, the outer diameter of the plug portion 3 is increased and clings to the wall of the oil pipe, the falling speed of the plunger is slowed down, an upper closed interface and a lower closed interface are formed in the oil pipe after the plug portion 3 changes in diameter, and the plunger gradually stops in the oil pipe. When formation pressure continues to increase, the pressure at the lower part of the plug part 3 of the plunger is increased along with the increase of the formation pressure, the plunger and liquid at the upper part of the plunger are pushed to move upwards, and after the liquid reaches a wellhead, the liquid column reaches a surface oil pipe and is discharged. Subsequently, the controller 41 controls the motor 11 to work, the motor 11 drives the slide block 22 to move downwards, the stretching outer diameter of the plug part 3 is reduced, and the plunger falls down on the inner wall of the oil pipe under the action of gravity to perform next liquid discharge.
Claims (9)
1. A compression-type variable diameter plunger, comprising:
a plunger transmission cylinder (1) in which a motor (11) is arranged;
the transmission device (2) comprises a transmission rod (21) and a sliding block (22), the transmission rod (21) is connected with the motor (11), the motor (11) can drive the transmission rod (21) to rotate, and the sliding block (22) is arranged on the outer side of the transmission rod (21) and can move along the axial direction of the transmission rod (21);
the tubular plug part (3) is sleeved on the outer side of the transmission rod (21), the upper end of the plug part is fixedly connected with the plunger transmission cylinder (1), and the lower end of the plug part is fixedly connected with the sliding block (22);
when the motor (11) drives the transmission rod (21) to rotate, the sliding block (22) can move along the direction of the motor (11) to drive the plug part (3) to be enlarged in the radial direction.
2. The compression type variable diameter plunger according to claim 1, wherein a plunger control cylinder (4) is connected to the top of the plunger transmission cylinder (1), the plunger control cylinder (4) is sealed at the top and is open at the bottom, and a controller (41) is arranged inside the plunger control cylinder.
3. The compression type variable-diameter plunger piston according to claim 2, wherein the plunger piston transmission cylinder (1) comprises a first cavity and a second cavity, a sensor (12) is arranged in the first cavity, a motor (11) is arranged in the second cavity, and the controller (41) is in signal connection with the sensor (12) and the motor (11) respectively.
4. The compression type variable-diameter plunger piston according to claim 3, wherein the sensor (12) is used for collecting pressure and temperature parameters in a well and feeding the pressure and temperature parameters back to the controller (41) for storage, and the controller (41) controls the motor (11) to work.
5. The compression type variable-diameter plunger according to claim 2, wherein a plunger head (5) is fixedly connected to the top of the plunger control cylinder (4), the plunger head (5) comprises a battery compartment (51) and a fishing head (52) which are integrally formed, and a battery is arranged in the battery compartment (51).
6. The compression type variable diameter plunger according to claim 5, wherein a groove is formed in the middle of the fishing head (52) for fishing the variable diameter plunger.
7. The compression type variable diameter plunger according to claim 1, wherein a joint (6) is fixedly connected to the bottom of the plunger transmission cylinder (1), and the joint (6) is further fixed to the upper end of the plug portion (3).
8. The compression variable diameter plunger according to claim 7, wherein the output shaft of the electric motor (11) is fixedly connected to the transmission rod (21) through the joint (6).
9. The compression-type variable diameter plunger according to claim 1, wherein the material of the plug portion (3) is any one of fluororubber, nitrile rubber and hydrogenated nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110129280.6A CN113279732A (en) | 2021-01-29 | 2021-01-29 | Compression type diameter-variable plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110129280.6A CN113279732A (en) | 2021-01-29 | 2021-01-29 | Compression type diameter-variable plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113279732A true CN113279732A (en) | 2021-08-20 |
Family
ID=77275552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110129280.6A Pending CN113279732A (en) | 2021-01-29 | 2021-01-29 | Compression type diameter-variable plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113279732A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982537A (en) * | 2021-11-04 | 2022-01-28 | 西南石油大学 | Novel plunger capable of locally reducing for plunger drainage gas production |
| CN114439435A (en) * | 2022-01-26 | 2022-05-06 | 宝鸡文理学院 | Downhole creeping type power gas lift plunger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080185141A1 (en) * | 2007-02-06 | 2008-08-07 | Stellarton Technologies Inc. | Plunger lift system |
| US20100089595A1 (en) * | 2005-02-24 | 2010-04-15 | Green David A | Staging tool seal arrangement for gas wells |
| CA2754242A1 (en) * | 2010-09-30 | 2012-03-30 | Stellarton Technologies Inc. | Plunger lift and safety valve system |
| CN103133340A (en) * | 2011-11-25 | 2013-06-05 | 中国石油天然气股份有限公司 | Gas well automatic liquid drainage plunger |
| CN104775806A (en) * | 2015-04-07 | 2015-07-15 | 成都陆海石油科技有限公司 | Underground walking robot for oil and gas wells |
| US20180073323A1 (en) * | 2015-05-18 | 2018-03-15 | Halliburton Energy Services, Inc. | Expandable Seal |
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| CN110821817A (en) * | 2019-11-20 | 2020-02-21 | 哈尔滨艾拓普科技有限公司 | Drainage gas production intelligence plunger |
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-
2021
- 2021-01-29 CN CN202110129280.6A patent/CN113279732A/en active Pending
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|---|---|---|---|---|
| US20100089595A1 (en) * | 2005-02-24 | 2010-04-15 | Green David A | Staging tool seal arrangement for gas wells |
| US20080185141A1 (en) * | 2007-02-06 | 2008-08-07 | Stellarton Technologies Inc. | Plunger lift system |
| CA2754242A1 (en) * | 2010-09-30 | 2012-03-30 | Stellarton Technologies Inc. | Plunger lift and safety valve system |
| CN103133340A (en) * | 2011-11-25 | 2013-06-05 | 中国石油天然气股份有限公司 | Gas well automatic liquid drainage plunger |
| CN104775806A (en) * | 2015-04-07 | 2015-07-15 | 成都陆海石油科技有限公司 | Underground walking robot for oil and gas wells |
| US20180073323A1 (en) * | 2015-05-18 | 2018-03-15 | Halliburton Energy Services, Inc. | Expandable Seal |
| CN209413885U (en) * | 2019-01-04 | 2019-09-20 | 中铁一局集团第四工程有限公司 | A kind of mortar depositing construction stop grouting plug |
| CN210396723U (en) * | 2019-09-11 | 2020-04-24 | 华北科技学院 | Gas pressure measuring device for double-hole pressure measurement |
| CN110821817A (en) * | 2019-11-20 | 2020-02-21 | 哈尔滨艾拓普科技有限公司 | Drainage gas production intelligence plunger |
| CN112065334A (en) * | 2020-07-30 | 2020-12-11 | 成都万基石油机械制造有限公司 | Underground intelligent gas interception and adjustment gas production and drainage robot |
Non-Patent Citations (1)
| Title |
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| 周俊然等: "可控重复坐封智能桥塞的设计", 《机械制造》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982537A (en) * | 2021-11-04 | 2022-01-28 | 西南石油大学 | Novel plunger capable of locally reducing for plunger drainage gas production |
| CN113982537B (en) * | 2021-11-04 | 2023-09-05 | 西南石油大学 | Plunger drainage gas production novel plunger capable of locally reducing |
| CN114439435A (en) * | 2022-01-26 | 2022-05-06 | 宝鸡文理学院 | Downhole creeping type power gas lift plunger |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210820 |
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| RJ01 | Rejection of invention patent application after publication |