CN207795173U - A kind of casing gas recovering device - Google Patents
A kind of casing gas recovering device Download PDFInfo
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- CN207795173U CN207795173U CN201721828342.8U CN201721828342U CN207795173U CN 207795173 U CN207795173 U CN 207795173U CN 201721828342 U CN201721828342 U CN 201721828342U CN 207795173 U CN207795173 U CN 207795173U
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Abstract
The utility model discloses a kind of casing gas recovering devices, belong to oil extraction in oil field engineering field.The device includes：Admission line, the first gas transmission line, the second gas transmission line, outlet line, pressure controller, air reducing valve, solenoid valve, battery；Admission line is connect with gate at the top of production casing, and outlet end is connected to the first gas transmission line and the second gas transmission line；First gas transmission line and the second gas transmission line are connected to outlet line input end, and outlet line is connected to petroleum pipeline；Pressure controller, air reducing valve, solenoid valve are separately positioned on admission line, the first gas transmission line, on the second gas transmission line；Battery, pressure controller, solenoid valve are sequentially electrically connected；When pressure controller detect casing atmospheric pressure be greater than or equal to it is default prescribe value when, solenoid valve is opened；When the pressure of casing gas is less than or equal to default close point value, solenoid valve is closed；When casing atmospheric pressure is greater than or equal to preset value, air reducing valve is opened；Conversely, closing.
Description
Technical field
The utility model is related to oil extraction in oil field engineering field, more particularly to a kind of casing gas recovering device.
Background technology
In oilfield exploitation operation, the gases such as portion of natural gas in reservoir enter the annular between oil pipe and production casing
In space, these gases are known as casing gas.In order to avoid the pressure in the annular space between oil pipe and production casing is excessive, and
And avoid casing gas from being directly discharged into air and pollute environment, it results in waste of resources, needs to recycle casing gas, therefore provide
A kind of casing gas recovering device is very necessary.
The prior art provides a kind of casing gas recovering device, which includes：Both ends respectively at the top of production casing
Gate, the gas transmission line that petroleum pipeline connects, the mechanical head associated gas recovering valve being arranged on gas transmission line.Wherein, mechanical head associated gas recovering valve
Sealing is realized by valve ball and valve seat.When casing atmospheric pressure reaches preset value, pushes valve ball to leave valve seat, make
Mechanical head associated gas recovering valve is opened, and casing gas is delivered to petroleum pipeline by gas transmission line.When casing atmospheric pressure is less than predetermined value, valve
Ball sets valve seat, and mechanical head associated gas recovering valve is made to close.
Designer has found that the existing technology has at least the following problems：
Valve ball can only can just leave valve seat under the pressure of predetermined value, and mechanical head associated gas recovering valve is made to open, and realize casing
Gas recycles, and can not achieve the continuous recycling to different pressures casing gas.Also, valve ball multiple impacts valve seat is easy to make sealing
Face is damaged, and sealing is can not achieve, and valve ball is also easily blocked by impurity and cannot seal valve seat, or even is caused former in petroleum pipeline
Oil is flow backwards, and influences the normal production of oil well.
Utility model content
The utility model embodiment provides a kind of casing gas recovering device, can solve problem of the prior art, the skill
Art scheme is as follows：
The utility model embodiment provides a kind of casing gas recovering device, and described device includes：It is admission line, first defeated
Gas pipeline, the second gas transmission line, outlet line, pressure controller, air reducing valve, solenoid valve, battery；
The input end of the admission line and gate at the top of production casing connect, outlet end simultaneously with first gas transmission
Pipeline is connected to the input end of second gas transmission line；
The outlet end of first gas transmission line and second gas transmission line input end with the outlet line simultaneously
Connection, the outlet end of the outlet line is connected to petroleum pipeline；
The pressure controller, the air reducing valve, the solenoid valve are separately positioned on the admission line, described
On one gas transmission line, second gas transmission line；
The battery, the pressure controller, the solenoid valve are sequentially electrically connected；
When the pressure controller detect the pressure of casing gas be greater than or equal to it is default prescribe value when, the pressure control
Device controls the solenoid valve and opens；When the pressure controller detects that the pressure of casing gas is less than or equal to default close point value
When, the pressure controller controls the solenoid valve and closes；
When the pressure of casing gas is greater than or equal to preset value, the air reducing valve is opened；Conversely, the air decompression
Valve is closed.
In a kind of possible design, the pressure controller is removably disposed on the admission line.
In a kind of possible design, the air reducing valve is removably disposed on first gas transmission line.
In a kind of possible design, the solenoid valve is removably disposed on second gas transmission line.
In a kind of possible design, between the admission line, first gas transmission line, second gas transmission line
It is connected by threeway；
It is connected by threeway between the outlet line, first gas transmission line, second gas transmission line.
In a kind of possible design, described sleeve pipe gas recovering device further includes：Third gas transmission line and setting are in institute
State the hand-operated valve on third gas transmission line；
The inlet end and an outlet end of the third gas transmission line is connected to second gas transmission line respectively, and is located at
The upstream and downstream of the solenoid valve.
In a kind of possible design, the hand-operated valve is removably disposed on the third gas transmission line.
In a kind of possible design, the inlet end and an outlet end of the third gas transmission line respectively by threeway with it is described
Second gas transmission line is connected to.
In a kind of possible design, the admission line, first gas transmission line, second gas transmission line, institute
State outlet line, the internal diameter of the third gas transmission line is 20~30mm.
The advantageous effect brought of technical solution that the utility model embodiment provides is：
The casing gas recovering device that the utility model embodiment provides, by the way that pressure controller and pressure controller is arranged
The solenoid valve of electric connection, also, pressure controller is according to detecting that the pressure of casing gas prescribes value and default close point with default
Value compares, and then controls solenoid valve and open or close.By air reducing valve according to the pressure value of casing gas compared with preset value,
To realize opening and close.Value, default close point value, the size of preset value are prescribed by adjusting default, solenoid valve and air is made to subtract
Pressure valve is realized opening and is closed under different casing atmospheric pressures, and continuously recovery of casing gas is easy to implement.Solenoid valve and air
Pressure reducing valve can accurately realize opening and close, and by the mating reaction of the two, can safely, efficiently realize pair
The continuous recycling of casing gas will not cause crude oil in petroleum pipeline to flow backwards, can ensure the normal production of oil well.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram for the casing gas recovering device that the utility model embodiment provides.
Wherein, reference numeral indicates respectively：
1 admission line,
2 first gas transmission lines,
3 second gas transmission lines,
4 outlet lines,
5 pressure controllers,
6 air reducing valves,
7 solenoid valves,
8 third gas transmission lines,
9 hand-operated valves.
Arrow indicates the flow direction of casing gas.
Specific implementation mode
It is new to this practicality below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
In the utility model embodiment, pressure controller is that this field is common, purchased in market can be obtained, such as can be with
For the pressure controller with digital display of the MD-S910 types purchased from Shanghai Ming Kong Sensotech Ltd., range is 0~4MPa.
It is understood that pressure controller includes：Built-in pressure sensor and processing chip, wherein pass through pressure
Button on controller prescribes value and default close point value to be arranged to preset, and the processing chip of pressure controller stores and remembers default
Prescribe value and default close point value.The built in pressure sensor detection pressure signal of pressure controller, and extremely by pressure signal transmission
Processing chip, processing chip receive pressure signal and with remember before it is default prescribe value and default close point value compared with, then root
According to comparison result, the control instruction opened or closed is sent to the body solenoid valve that executes controlled.Solenoid valve refers to according to control
It enables and makes the corresponding action opened or close.
Air reducing valve is that this field is common, purchased in market can be obtained, such as can be to have purchased from the double rising sun electronics in Shanghai
The air reducing valve of limit company QTY-25 models, pressure regulation spectrum are 0~6MPa.
It is understood that air reducing valve includes：Ontology has from top to bottom been sequentially arranged spring, film in chamber body
The left and right both ends of piece, spool and other component, ontology are connect with feed-line.The upper end of spring is connect with adjusting knob, is passed through
Rotation of adjustment knob, holddown spring that can be in various degree, the degree by controlling to adjust knob compressed spring can be arranged pre-
If value.Spring, diaphragm, valve block can move up and down simultaneously, and when three moves up and down, flow channels can be made to beat on or off
It closes.When gas pressure is greater than or equal to preset value, spool, diaphragm, spring movement are pushed, so that flow channels is opened, i.e. air
Pressure reducing valve 6 is opened.When gas pressure is less than preset value, it is not enough to driving spool, diaphragm, spring movement, flow channels cannot
It is opened.
The utility model embodiment provides a kind of casing gas recovering device, and as shown in Fig. 1, which includes：Air inlet
Pipeline 1, the first gas transmission line 2, the second gas transmission line 3, outlet line 4, pressure controller 5, air reducing valve 6, solenoid valve 7,
Battery.
The input end of admission line 1 and gate at the top of production casing connect, outlet end simultaneously with the first gas transmission line 2 and
The input end of second gas transmission line 3 is connected to.
The outlet end of first gas transmission line 2 and the second gas transmission line 3 is connected to the input end of outlet line 4 simultaneously, outlet
The outlet end of pipeline 4 is connected to petroleum pipeline.
Pressure controller 5, air reducing valve 6, solenoid valve 7 are separately positioned on admission line 1, the first gas transmission line 2, second
On gas transmission line 3.
Battery, pressure controller 5, solenoid valve 7 are sequentially electrically connected.
When pressure controller 5 detect the pressure of casing gas be greater than or equal to it is default prescribe value when, pressure controller 5 controls
Solenoid valve 7 is opened；When pressure controller 5 detects that the pressure of casing gas is less than or equal to default close point value, pressure controller 5
Solenoid valve 7 is controlled to close.
When the pressure of casing gas is greater than or equal to preset value, air reducing valve 6 is opened；Conversely, air reducing valve 6 closes
It closes.
The operation principle of the casing gas recovering device provided below with regard to the utility model embodiment, which is given, to be described：
When in use, so that the input end of admission line 1 and the gate at the top of production casing is connected, make going out for outlet line 4
Mouth end is connected to petroleum pipeline, opens gate, and casing gas is made to input admission line 1.Battery is pressure controller 5 and solenoid valve 7
Power supply, based on the above-mentioned elaboration to pressure controller 5 it is found that pressure controller 5 detects the pressure of 1 inner sleeve gas of admission line in real time
Power.When pressure controller 5 detect the pressure of casing gas be greater than or equal to it is default prescribe value when, pressure controller 5 controls electromagnetism
Valve 7 is opened, and casing gas is made sequentially to input outlet line 4, petroleum pipeline by the second gas transmission line 3, is returned to casing gas with realizing
Receipts and pressure release.When pressure controller 5 detects that the pressure of casing gas is less than or equal to default close point value, pressure controller 5 is controlled
Solenoid valve 7 processed is closed, and prevents casing gas from inputting outlet line 4 by the second gas transmission line 3.
Based on the above-mentioned elaboration to air reducing valve 6 it is found that when the pressure of casing gas is greater than or equal to preset value, air
Pressure reducing valve 6 is opened, and so that casing gas is sequentially entered the first gas transmission line 2, outlet line 4, to realize pressure release.When the pressure of casing gas
When less than preset value, air reducing valve 6 is closed, and prevents casing gas from inputting outlet line 4 by the first gas transmission line 2.
The casing gas recovering device that the utility model embodiment provides, by the way that pressure controller 5 and pressure controller is arranged
5 solenoid valves 7 being electrically connected, also, pressure controller 5 according to detect the pressure of casing gas with it is default prescribe value and preset close
Point value compares, and then controls solenoid valve 7 and open or close.By air reducing valve 6 according to the pressure value and preset value of casing gas
Compare, to realize opening and close.Value, default close point value, the size of preset value are prescribed by adjusting default, makes 7 He of solenoid valve
Air reducing valve 6 is realized opening and is closed under different casing atmospheric pressures, and continuously recovery of casing gas is easy to implement.Solenoid valve
7 and air reducing valve 6 can accurately realize opening with close, can safely, efficiently by the mating reaction of the two
The continuous recycling to casing gas is realized on ground, and crude oil in petroleum pipeline will not be caused to flow backwards, can ensure the normal production of oil well.
Wherein, battery can be the power distribution cabinet beside oil well, or the battery being installed on pressure controller 5.
For the ease of replacing the pressure controller 5 of different size, pressure controller 5 is removably disposed in admission line 1
On.
For example, the mode that pressure controller 5 is connected through a screw thread is arranged on admission line 1.The side of threaded connection
Formula is easy setting, facilitates the dismounting between pressure controller 5 and admission line 1.
Air reducing valve 6 can realize automatic adjustment according to casing atmospheric pressure, when the pressure of casing gas is greater than or equal to
When preset value, air reducing valve 6 is opened, and when the pressure of casing gas is less than preset value, air reducing valve 6 is closed.
For the ease of replacing the air reducing valve 6 of different size, air reducing valve 6 is removably disposed in the first appendix
On line 2.
For example, the mode that air reducing valve 6 can be connected through a screw thread is arranged on the first gas transmission line 2.Screw thread
The mode of connection is easy setting, facilitates the dismounting of air reducing valve 6.
Solenoid valve 7 is structure known in the art, and this will not be detailed here.For example, solenoid valve 7 can be purchased from Zhejiang
The solenoid valve 7 of the 2W-250-25 models of the Yuyao Jiang Sheng Bo Pufa industry Co., Ltd.
For the ease of replacing the solenoid valve 7 of different size, solenoid valve 7 is removably disposed on the second gas transmission line 3.
Solenoid valve 7 can be accomplished in several ways it and be removably disposed on the second gas transmission line 3, in a kind of possibility
Realization method in, the mode that solenoid valve 7 is connected through a screw thread is arranged on the second gas transmission line 3.
It is more to realize that the mode of connection has between admission line 1, the first gas transmission line 2, the second gas transmission line 3, outlet line 4
Kind, in one possible implementation, lead to by three between admission line 1, the first gas transmission line 2, the second gas transmission line 3
It connects；It is connected by threeway between outlet line 4, the first gas transmission line 2, the second gas transmission line 3.
Threeway is easy to obtain, and facilitates and realizes admission line 1, the first gas transmission line 2, the second gas transmission line 3, outlet line 4
Between connection.
Wherein, threeway tool is there are three nozzle, is provided with internal thread on the wall of three nozzles, the outlet end of admission line 1, the
It is both provided with external screw thread on the wall of the input end of one gas transmission line 2 and the second gas transmission line 3, by making internal thread connect with external screw thread
It connects, realizes the connection of three.
Similarly, on the wall of the outlet end of the input end of outlet line 4, the first gas transmission line 2 and the second gas transmission line 3
It is provided with external screw thread, by making internal thread be connect with external screw thread, realizes the connection of three.
The mode of above-mentioned threaded connection facilitates admission line 1, the first gas transmission line 2, the second gas transmission line 3, outlet line 4
Between dismounting.
Pressure release cannot be fast implemented in order to avoid casing atmospheric pressure is excessive, it is in one possible implementation, such as attached
Shown in Fig. 1, the casing gas recovering device that the utility model embodiment provides further includes：Third gas transmission line 8 and setting are the
Hand-operated valve 9 on three gas transmission lines 8；The inlet end and an outlet end of third gas transmission line 8 is connected to the second gas transmission line 3 respectively,
And it is located at the upstream and downstream of solenoid valve 7.
It should be noted that " upstream " refers to：The first position of circulation casing gas, " downstream " refers to：After circulate casing
The position of gas.
When the pressure value for the casing gas that pressure controller 5 detects is excessive, solenoid valve 7 and air reducing valve 6 can not be fast
When fast pressure release, hand-operated valve 9 can be opened manually, so that casing gas is sequentially entered the second gas transmission line 3, third by admission line 1 defeated
Gas pipeline 8, outlet line 4, to realize pressure release.
Hand-operated valve 9 is easy to obtain, and the mode opened or closed is simple.
For the ease of replacing the hand-operated valve 9 of different size, hand-operated valve 9 is removably disposed on third gas transmission line 8.
Hand-operated valve 9 is removably disposed in there are many modes on third gas transmission line 8, for example, hand-operated valve 9 passes through
The mode of threaded connection is arranged on third gas transmission line 8.The mode of threaded connection is easy setting, convenient tearing open between the two
Dress.
In one possible implementation, the inlet end and an outlet end of third gas transmission line 8 passes through threeway and the respectively
Two gas transmission lines 3 are connected to.
Wherein, the upstream and downstream of the solenoid valve 7 of the second gas transmission line 3 be respectively set there are one opening, two of threeway
Nozzle is connected to the second gas transmission line 3 of opening both sides respectively.The import of threeway remaining a nozzle and third gas transmission line 8
End or outlet end connection.
Threeway is easy to obtain, and facilitates the connection between third gas transmission line 8 and the second gas transmission line 3.
Be provided with internal thread on the wall of three nozzles of threeway, the second gas transmission line 3, third gas transmission line 8 input end and
It is provided with external screw thread on the wall of outlet end, by making internal thread be connected with external screw thread, realizes the second gas transmission line 3 and third gas transmission
Connection between pipeline 8.
It can be suitable for most of oil well for the ease of the casing gas recovering device that the utility model embodiment provides, one
In the possible realization method of kind, admission line 1, the first gas transmission line 2, the second gas transmission line 3, outlet line 4, third appendix
The internal diameter of line 8 is 20~30mm, such as can be 20mm, 22mm, 24mm, 26mm, 28mm, 30mm etc..
In the utility model embodiment, the bending part on the first gas transmission line 2 and the second gas transmission line 3 passes through bend pipe
It realizes.
The casing gas recovering device provided below the utility model embodiment is illustrated applied to XX wells：
It is 1.0MPa that XX wells petroleum pipeline, which normally produces pressure, and the default value that prescribes of setting is 1.3MPa, and default close point value is
1.1MPa, i.e. respectively 130%, the 110% of petroleum pipeline pressure value.When pressure controller 5 detect casing atmospheric pressure >=
When 1.3MPa, the control instruction opened is sent to solenoid valve 7, after solenoid valve 7 receives the instruction, opens, casing gas is made to enter the
Two gas transmission lines 3, outlet line 4.When pressure controller 5 detects casing atmospheric pressure≤1.1MPa, sends and close to solenoid valve 7
The control instruction closed after solenoid valve 7 receives the instruction, is closed.
The pressure of air reducing valve 6 can be set as 1.4MPa, as the 140% of petroleum pipeline pressure value.Work as casing gas
Pressure >=1.4MPa when, air reducing valve 6 open, make casing gas enter the first gas transmission line 2, outlet line 4, and then realize
Pressure release.When the pressure of casing gas is less than 1.4MPa, air reducing valve 6 is closed.
When solenoid valve 7 and air reducing valve 6 can not achieve quick pressure releasing, hand-operated valve 9 can also be opened manually, makes casing
Gas enters third gas transmission line 8, outlet line 4, and then realizes pressure release.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (9)
1. a kind of casing gas recovering device, which is characterized in that described device includes：Admission line (1), the first gas transmission line (2),
Second gas transmission line (3), outlet line (4), pressure controller (5), air reducing valve (6), solenoid valve (7), battery；
The input end of the admission line (1) and gate at the top of production casing connect, outlet end simultaneously with first gas transmission
Pipeline (2) is connected to the input end of second gas transmission line (3)；
The outlet end of first gas transmission line (2) and second gas transmission line (3) simultaneously with the outlet line (4) into
The connection of mouth end, the outlet end of the outlet line (4) is connected to petroleum pipeline；
The pressure controller (5), the air reducing valve (6), the solenoid valve (7) are separately positioned on the admission line
(1), first gas transmission line (2), on second gas transmission line (3)；
The battery, the pressure controller (5), the solenoid valve (7) are sequentially electrically connected；
When the pressure controller (5) detect the pressure of casing gas be greater than or equal to it is default prescribe value when, the pressure control
Device (5) controls the solenoid valve (7) and opens；When the pressure controller (5) detects that the pressure of casing gas is less than or equal in advance
If when close point value, the pressure controller (5) controls the solenoid valve (7) and closes；
When the pressure of casing gas is greater than or equal to preset value, the air reducing valve (6) is opened；Conversely, the air decompression
Valve (6) is closed.
2. casing gas recovering device according to claim 1, which is characterized in that the pressure controller (5) is removably
It is arranged on the admission line (1).
3. casing gas recovering device according to claim 1, which is characterized in that the air reducing valve (6) is removably
It is arranged on first gas transmission line (2).
4. casing gas recovering device according to claim 1, which is characterized in that the solenoid valve (7) is removably disposed
On second gas transmission line (3).
5. casing gas recovering device according to claim 1, which is characterized in that the admission line (1), described first defeated
It is connected by threeway between gas pipeline (2), second gas transmission line (3)；
It is connected by threeway between the outlet line (4), first gas transmission line (2), second gas transmission line (3).
6. according to Claims 1 to 5 any one of them casing gas recovering device, which is characterized in that described sleeve pipe gas recycling dress
It sets and further includes：Third gas transmission line (8) and the hand-operated valve (9) being arranged on the third gas transmission line (8)；
The inlet end and an outlet end of the third gas transmission line (8) is connected to second gas transmission line (3) respectively, and position respectively
Upstream and downstream in the solenoid valve (7).
7. casing gas recovering device according to claim 6, which is characterized in that the hand-operated valve (9) is removably disposed
On the third gas transmission line (8).
8. casing gas recovering device according to claim 6, which is characterized in that the import of the third gas transmission line (8)
End and outlet end are connected to by threeway with second gas transmission line (3) respectively.
9. casing gas recovering device according to claim 6, which is characterized in that the admission line (1), described first defeated
Gas pipeline (2), second gas transmission line (3), the outlet line (4), the third gas transmission line (8) internal diameter be 20
~30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721828342.8U CN207795173U (en) | 2017-12-25 | 2017-12-25 | A kind of casing gas recovering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721828342.8U CN207795173U (en) | 2017-12-25 | 2017-12-25 | A kind of casing gas recovering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207795173U true CN207795173U (en) | 2018-08-31 |
Family
ID=63282326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721828342.8U Active CN207795173U (en) | 2017-12-25 | 2017-12-25 | A kind of casing gas recovering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207795173U (en) |
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2017
- 2017-12-25 CN CN201721828342.8U patent/CN207795173U/en active Active
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