CN112112587A - Plunger self-positioning method - Google Patents
Plunger self-positioning method Download PDFInfo
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- CN112112587A CN112112587A CN202011042317.3A CN202011042317A CN112112587A CN 112112587 A CN112112587 A CN 112112587A CN 202011042317 A CN202011042317 A CN 202011042317A CN 112112587 A CN112112587 A CN 112112587A
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- Prior art keywords
- plunger
- soluble material
- pipeline
- positioning method
- self
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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
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/04—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells operated by fluid means, e.g. actuated by explosion
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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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- 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)
- Pipeline Systems (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention provides a plunger self-positioning method, relates to the technical field of oil exploitation, and solves the technical problems of complex process and low efficiency of placing a plunger into a pipeline in the existing oil exploitation process. The connecting device of the plunger self-positioning method is made of the soluble material, the soluble material coating is coated on the side face of the plunger, and the soluble material is dissolved in water, so that the plunger can be automatically clamped and separated from the limiting buffer when reaching the clamping position of the pipeline, the rope is prevented from being used for placing, the placing step is simplified, and the placing efficiency is improved.
Description
Technical Field
The invention relates to the technical field of oil exploitation, in particular to a plunger self-positioning method.
Background
With continuous development of gas fields, the proportion of low-yield and low-efficiency wells is increased year by year, and how to exert the productivity of the low-yield and low-efficiency wells and keep the stable production of gas wells becomes a technical problem to be solved urgently. From the evaluation result in the aspect of yield increase effect, the plunger gas lift water drainage gas production technology is suitable for gas wells with small gas quantity (more than one thousand of daily gas production quantity) and high liquid-gas ratio (less than five/ten thousand of daily gas production quantity), and the slippage loss of a shaft is small. Therefore, the plunger gas lift water drainage gas recovery technology is an effective measure for improving the recovery ratio of the low-yield low-efficiency well.
The existing plunger gas lift drainage method is to place the lower part of the plunger to a proper position through a rope, and has complex working procedures and low efficiency.
Disclosure of Invention
The invention aims to provide a plunger self-positioning method, which solves the technical problems of complex process and low efficiency of placing a plunger into a pipeline in the existing oil exploitation process. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention adopts the following technical scheme:
a plunger self-positioning method comprising the steps of:
s1 coating a soluble material coating on the side face of the plunger;
s2, connecting the plunger and the limiting buffer device through a connecting device;
s3, placing the set plunger into the pipeline;
s4, opening a monitoring instrument and a nitrogen injection device, monitoring the distance of the wellhead of the plunger in real time, stopping injecting nitrogen when the monitoring instrument monitors that the plunger falls to a set distance, dissolving the soluble material coating and the connecting device in water, and starting reciprocating work of the plunger in the pipeline;
be equipped with in the pipeline and be used for the screens hole for spacing buffering nipple joint location, the coating of plunger side has the soluble material coating, connecting device also adopts soluble material to make.
Preferably, the screens hole in the pipeline sets up below the liquid level.
Preferably, the soluble material is magnesium aluminum alloy.
Preferably, the thickness of the soluble material coating is the difference between the plunger tube and the plunger radius.
Preferably, the monitoring instrument is an ultrasonic range finder.
Based on the technical scheme, the following technical effects can be generated:
the plunger self-positioning method provided by the embodiment of the invention can be used for lowering the plunger by a plunger gas lift drainage method. According to the plunger self-positioning method, the soluble coating is arranged between the side face of the plunger and the gap of the pipeline, the connecting device made of the soluble material is connected with the limiting buffer short section, when the soluble coating and the connecting device are dissolved in water, the plunger is separated from the limiting buffer device, and the plunger is lowered. The technical problems that the process of putting the plunger into the pipeline is complex and the efficiency is low in the existing oil exploitation process are solved. According to the plunger self-positioning method, when the plunger reaches the pipeline clamping position, the plunger can be automatically clamped and separated from the limiting buffer, so that the use of rope placement is avoided, the placement step is simplified, and the placement efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the structural principle of the present invention;
in the figure: 1. A pipeline; 2. a limiting buffer short section; 3. a connecting device; 4. a plunger; 5. a soluble material coating; 6. monitoring an instrument; 7. a nitrogen gas injection device; 8. the liquid level.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
As shown in fig. 1:
the invention provides a plunger self-positioning method, which comprises the following steps:
s1 coating the soluble material coating 5 on the side surface of the plunger 4;
s2, the plunger 4 and the limiting and buffering device 2 are connected through the connecting device 3;
s3, placing the arranged plunger 4 into the pipeline 1;
s4, opening the monitoring instrument 6 and the nitrogen injection device 7, monitoring the distance of the well mouth of the plunger 4 in real time, stopping injecting nitrogen when the monitoring instrument 6 monitors that the plunger falls to a set distance, dissolving the soluble material coating 5 and the connecting device 3 in water, and enabling the plunger 4 to work in a reciprocating mode in the pipeline;
be equipped with in the pipeline 1 and be used for the screens hole for spacing buffering nipple joint 2 location, the coating of 4 side of plunger has soluble material coating 5, connecting device 3 also adopts soluble material to make.
As an alternative embodiment, a detent hole in the pipe 1 is provided below the liquid level 8.
In an alternative embodiment, the soluble material is magnesium aluminum alloy.
As an alternative embodiment, the thickness of the soluble material coating 5 is the difference between the radii of the plunger tube 1 and the plunger 4.
In an alternative embodiment, the monitoring device 6 is an ultrasonic distance meter.
The working process of the plunger self-positioning method is as follows:
putting into pipeline 1 with plunger 4 who sets up soluble material coating 5, opening monitoring instrument 6 and nitrogen gas injection device 7, the distance of monitoring instrument 6 real-time supervision plunger 4 and well head, nitrogen gas injection device 7 carries out nitrogen gas and injects into and makes plunger 4 pressurized whereabouts, monitors plunger whereabouts to the set distance when monitoring instrument 6, stops to inject nitrogen gas into, and soluble material coating 5 and connecting device 3 meet water and dissolve, and plunger 4 begins reciprocating work in the pipeline.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A plunger self-positioning method comprising the steps of:
s1 coating a soluble material coating (5) on the side surface of the plunger (4);
s2 is connected with the plunger (4) and the limiting buffer device (2) through the connecting device (3);
s3, placing the set plunger (4) into the pipeline (1);
s4, opening a monitoring instrument (6) and a nitrogen injection device (7), monitoring the distance between the wellhead of the plunger (4) in real time, stopping injecting nitrogen when the monitoring instrument (6) monitors that the plunger falls to a set distance, dissolving the soluble material coating (5) and the connecting device (3) in water, and enabling the plunger (4) to start reciprocating in the pipeline;
be equipped with in pipeline (1) and be used for giving the screens hole of spacing buffering nipple joint (2) location, plunger (4) side coating has soluble material coating (5), connecting device (3) also adopt soluble material to make.
2. The plunger self-positioning method of claim 1, wherein: the clamping hole in the pipeline (1) is arranged below the liquid level (8).
3. The plunger self-positioning method of claim 1, wherein: the soluble material is magnesium aluminum alloy.
4. The plunger self-positioning method of claim 1, wherein: the thickness of the soluble material coating (5) is the difference between the radiuses of the plunger pipeline (1) and the plunger (4).
5. The plunger self-positioning method of claim 1, wherein: the monitoring instrument (6) is an ultrasonic range finder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042317.3A CN112112587B (en) | 2020-09-28 | 2020-09-28 | Plunger self-positioning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042317.3A CN112112587B (en) | 2020-09-28 | 2020-09-28 | Plunger self-positioning method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112112587A true CN112112587A (en) | 2020-12-22 |
| CN112112587B CN112112587B (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011042317.3A Active CN112112587B (en) | 2020-09-28 | 2020-09-28 | Plunger self-positioning method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453790A (en) * | 2013-09-12 | 2015-03-25 | 江汉视博康帕思石油技术（武汉）有限公司 | Water drainage and gas collection device with plunger |
| CN204312032U (en) * | 2014-12-05 | 2015-05-06 | 西安金立石油科技有限公司 | A kind of Based Intelligent Control plunger lift water pumping gas production system |
| CN107939351A (en) * | 2016-10-12 | 2018-04-20 | 中国石油天然气股份有限公司 | A kind of coal bed gas water drainage gas production device and its application method |
| CN210049874U (en) * | 2019-06-11 | 2020-02-11 | 陕西华耀石油设备工程有限公司 | Multifunctional gas production tool for tail end of continuous oil pipe |
| CN111088958A (en) * | 2020-01-14 | 2020-05-01 | 中国石油天然气股份有限公司 | Controllable soluble casing plug and pressure-free tubing downhole method |
-
2020
- 2020-09-28 CN CN202011042317.3A patent/CN112112587B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453790A (en) * | 2013-09-12 | 2015-03-25 | 江汉视博康帕思石油技术（武汉）有限公司 | Water drainage and gas collection device with plunger |
| CN204312032U (en) * | 2014-12-05 | 2015-05-06 | 西安金立石油科技有限公司 | A kind of Based Intelligent Control plunger lift water pumping gas production system |
| CN107939351A (en) * | 2016-10-12 | 2018-04-20 | 中国石油天然气股份有限公司 | A kind of coal bed gas water drainage gas production device and its application method |
| CN210049874U (en) * | 2019-06-11 | 2020-02-11 | 陕西华耀石油设备工程有限公司 | Multifunctional gas production tool for tail end of continuous oil pipe |
| CN111088958A (en) * | 2020-01-14 | 2020-05-01 | 中国石油天然气股份有限公司 | Controllable soluble casing plug and pressure-free tubing downhole method |
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| Publication number | Publication date |
|---|---|
| CN112112587B (en) | 2021-09-07 |
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Effective date of registration: 20220318 Address after: 618399 south section 3, Zhongshan Avenue, Guanghan City, Deyang City, Sichuan Province Patentee after: CHINA NATIONAL PETROLEUM CORPORATION, SOUTHWEST OIL & GASFIELD BRANCH, ENGINEERING TECHNOLOGY Research Institute Address before: 618300 Guanghan City, Deyang City, Sichuan Province Patentee before: CHINA NATIONAL PETROLEUM CORPORATION, SOUTHWEST OIL & GASFIELD BRANCH, ENGINEERING TECHNOLOGY Research Institute Patentee before: Sichuan shengnuo oil and Gas Engineering Technology Service Co., Ltd |