Plunger self-positioning system
Technical Field
The utility model relates to an oil development equips technical field, concretely relates to plunger is from positioning system.
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 piston for plunger piston air lift drainage is characterized in that the lower part of the plunger piston is arranged at a proper position through a rope, the process is complex and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a plunger is from positioning system has solved the complicated and lower technical problem of efficiency of pipeline process is put into to current oil development in-process plunger. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a plunger self-positioning system comprises a pipeline arranged underground, a plunger, a detection instrument arranged on the ground of a wellhead and a nitrogen injection device; wherein:
the plunger is connected with spacing buffering nipple joint through connecting device, be equipped with the screens hole that is used for giving spacing buffering nipple joint location in the pipeline, 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 embodiment of the utility model provides a pair of plunger is from positioning system can be used to plunger gas lift drainage method and transfers the plunger. The utility model relates to a self-align system of plunger is through set up soluble coating and use the connecting device that soluble material made to connect spacing buffering nipple joint between plunger side and pipeline space, meets water with connecting device when soluble coating and dissolves the back, and plunger and spacing buffer separate, and the completion is transferred to the plunger. 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. The utility model relates to a plunger arrives pipeline card position in plunger self-positioning system can automatic card and break away from with spacing buffer, avoids using the rope to put into, simplifies and puts into the step, has improved and has put into efficiency.
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 these drawings without creative efforts.
FIG. 1 is a schematic view of the structure 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 clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection 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 description.
As shown in fig. 1:
the utility model provides a plunger self-positioning system, which comprises a pipeline 1 arranged underground, a plunger 4, a detecting instrument 6 arranged on the ground of a well mouth and a nitrogen injection device 7; wherein:
plunger 4 is connected with spacing buffering nipple joint 2 through connecting device 3, be equipped with the screens hole that is used for giving spacing buffering nipple joint 2 location in the pipeline 1, 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 utility model relates to a self-align system's of plunger working process 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 the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.