CN105757260B - A kind of downhole pulser control valve of low remanent magnetism - Google Patents
A kind of downhole pulser control valve of low remanent magnetism Download PDFInfo
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- CN105757260B CN105757260B CN201610181338.0A CN201610181338A CN105757260B CN 105757260 B CN105757260 B CN 105757260B CN 201610181338 A CN201610181338 A CN 201610181338A CN 105757260 B CN105757260 B CN 105757260B
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- push rod
- control valve
- plug
- remanent magnetism
- valve port
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- 230000005389 magnetism Effects 0.000 title claims abstract description 32
- 230000035699 permeability Effects 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000006854 communication Effects 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
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- 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
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention is related to oil exploration and drilling and production technology field,More particularly to a kind of downhole pulser control valve of low remanent magnetism,The control valve sets return spring between push rod and plug,When electromagnetic actuator device driving push rod promotes plug closure valve port,Spring can be compressed,Spring force is less than the thrust that electromagnetic actuator device is applied on push rod at this time,Thrust more than mud pressure to plug,Its one end pushes plug and props up mud pressure at valve port,The other end applies deboost to push rod,When valve port to be opened removes the control signal electric current of electromagnetic actuator device,Although there are part thrust also because of remanent magnetism to spring for push rod,But the remanent magnetism thrust is significantly less than the reaction force of spring,Push rod just can fast fallback and break away from remanent magnetism thrust,Then lower end cap and push rod is promoted to reset completely in mud pressure,So that control valve can effectively carry out high frequency response.
Description
Technical field
The invention is related to oil exploration and drilling and production technology field, more particularly to a kind of underground pulse generation of low remanent magnetism
Device control valve.
Background technology
During oil exploration, drilling, drilling equipment is essential instrument.The core of drilling equipment is to bore
Head, it is therefore desirable to monitor the drilling situation of drill bit at any time.However, going deep into probing, drill bit can go deep into stratum, on ground
Staff be difficult to the situation of directly observation drill bit, therefore, it is necessary to set a variety of monitoring devices, such as direction to pass at drill bit
Sensor and temperature sensor etc., and the data detected are delivered to ground by communication link, by ground staff into
Row receives analysis.
Since subsurface environment extremely dislikes summary, detection device is difficult to communicate with ground by general communication line,
It is difficult to communicate with ground by conventional wireless mode.At present, the mode of ground and underground communica tion is usually used one
Impulse generator is controlled by slurry transportation pipeline come what is realized, its principle is to set impulse generator in mud runner,
Impulse generator is got through/is blocked according to certain rule（Not complete to block in practical application, typically reduce the hole of runner
Footpath）Mud runner, so that mud runner produces regular pulse, surface personnel is in ground detection and decodes these arteries and veins
Rush to obtain detection data.
Specifically, impulse generator generally comprises main valve and control valve, guiding valve is set in main valve and is arranged at outside guiding valve and is located
Flow-limiting valve, the tail end of main valve is connected with control valve, and a mud part flow to control valve by spool cavity, and passes through control valve
Discharge orifice in flow out, another part is by the gap between guiding valve and flow-limiting valve, when the valve port of control valve is closed, in guiding valve
The mud of chamber can not flow out, chamber pressure rise, so as to promote guiding valve to slide, reduce the gap between guiding valve and flow-limiting valve, whole
The aperture of a slurry channel reduces, so that mud integral pressure raises, produces a pulse.Therefore, as long as control valve is according to inspection
The valve port of the orderly on-off control valve of signal of device is surveyed, whole slurry channel can produce a regular pulse.
But in putting into practice, the mechanical wave that impulse generator produces always is difficult to the electromagnetic wave stringent one occurred with detection device
Cause, particularly under conditions of high frequency.Applicant has found that one of major reason is exactly that the remanent magnetism of control valve is asked by research
Topic.In control valve, it usually needs an electromagnetic actuator device（Typically coil）, electromagnetic actuator device sends out according to detection device
The electric signal come, produces a magnetic field, so as to promote the push rod in control valve, push rod promotes plug again when needing to block valve port
Valve port is blocked, then cancels magnetic field when needing and releasing closure to valve port, the mud pressure outside valve port can promote plug and push rod
Reset.But in fact, after the electric signal of electromagnetic actuator device is removed, magnetic conduction substance still can residue have remanent magnetism, magnetic field is difficult
To be quickly wholly absent, therefore certain thrust is still suffered to push rod, which can offset one in push rod reseting procedure
The initial period of the pressure of part mud offsets the pressure of mud, so as to cause to reset slow.And in the case of resetting slowly,
Then it is difficult to be rapidly performed by high frequency response.
The content of the invention
The purpose of the invention is to avoid above-mentioned shortcoming of the prior art and electricity can be reduced by providing one kind
The remanent magnetism of magnetic drive unit, so that control valve can effectively carry out high frequency response.
Invention thinking：Inventor has found that in current control valve, the armature of electromagnetic actuator device can be pushed against outside control valve
Shell, moving armature can also push against control valve shell through magnetic conductance seat, and armature, control valve shell, magnetic conductance seat and moving armature form one
A closed loop, electromagnetic actuator device produce magnetic field and are transmitted in the closed loop, that is to say, that the flux path is needed by control valve
Shell, and control valve is when selecting shell, usually top-priority is hardness performance, it is ensured that control valve surface is resistant to mud
Erosion is without destroyed.But in nature, its general magnetic property of the good material of hardness performance is poor, therefore, housing
Just become the key of the remanent magnetism of electromagnetic actuator device.But the method that those skilled in the art reduces remanent magnetism at present is typically
Based on to the coil in electromagnetic actuator device, magnetic conductance seat etc., it is not fully recognized that housing is only the key for producing remanent magnetism.
The purpose of the invention is achieved through the following technical solutions：
Provide a kind of downhole pulser control valve of low remanent magnetism, including valve port, discharge orifice, plug, push rod and electricity
Magnetic drive unit, the valve port are connected with the discharge orifice, and the electromagnetic actuator device drives according to the control signal received
The push rod is moved towards valve port, so that the push rod drives the plug to block the valve port, the electromagnetic actuator device bag
Electromagnetic coil, magnetic conductance seat and the moving armature being arranged in magnetic conductance seat are included, the electromagnetic coil produces drive according to electric control signal
Moving field, shell of the driving magnetic field through control valve are transferred to the magnetic conductance seat so as to drive moving armature to be transported towards valve port
Dynamic, moving armature connects the push rod, coercivity H≤35A/m of the control valve shell, maximum permeability μm >=0.012H/
M, 300 >=1.1T of magnetic induction density B when magnetic field intensity is 300A/m.
Wherein, the control valve shell is coated with hard alloy layer.
Wherein, the hardness of the hard alloy layer is more than or equal to 1200HV0.3.
Wherein, the bond strength of the hard coat and control valve shell is more than or equal to 120Mpa.
Wherein, the thickness of the hard coat is less than or equal to 0.2mm.
Wherein, return spring is further included, return spring one end is connected with push rod, and the other end is connected with plug, the push rod
Make the return spring deformation and then drive the plug to block the valve port, when the plug blocks the valve port, described time
Power spring is more than pressure of the liquid to valve port plug to the active force of push rod and plug.
Wherein, the plug offers inner cavity, and one end of the push rod towards valve port is inserted in the inner cavity.
Wherein, the inner cavity cavity wall of the plug or lateral wall open up fluted, and the push rod front end is provided with spacer pin
Axis, the limit pin shaft are inserted in the groove, are more than along the width of groove described in push rod vibration-direction described spacing
The width of axis pin, so that the limit pin shaft can move back and forth in a groove when push rod moves back and forth.
Wherein, the one end of the plug away from valve port is provided with the first stage, and the push rod is provided with the second stage, described
The first stage is fixed in return spring one end, and the other end is fixed on the second stage.
The beneficial effect of the invention：The invention has paid the utmost attention to leading for material when selecting controller housing
Magnetic energy power, particularly, it is desirable to which the magnetic property of shell reaches coercivity H≤35A/m, maximum permeability μm >=0.012H/m, magnetic
The requirement of 300 >=1.1T of magnetic induction density B when field intensity is 300A/m, since coercivity is smaller, fills in electromagnetic drive
After putting power-off, shell also can quick demagnetization, remanent magnetism is significantly reduced, so that control valve can effectively carry out high frequency
Response, on the other hand, since permeability is bigger, electromagnetic actuator device, which needs only to pass to less electric current, just can
Battery armature is made to obtain enough magnetic field forces, this aspect reduces the energy consumption of battery powered device, and battery powered device
The magnetic field intensity of generation is also smaller, therefore it is also smaller to be transferred to the magnetic field intensity on controller housing, Gu also can be significantly
Reduce remanent magnetism.
Brief description of the drawings
The invention is described further using attached drawing, but the embodiment in attached drawing is not formed to the invention
Any restrictions, without creative efforts, can also be according to following attached for those of ordinary skill in the art
Figure obtains other attached drawings.
Fig. 1 is a kind of structure diagram of the downhole pulser control valve of low remanent magnetism of the invention.
Include in Fig. 1：
1 --- valve port, 2 --- discharge orifice, 3 --- plug, 31 --- inner cavity, 32 --- groove, 33 --- first stage,
4 --- --- --- --- return spring, 6 --- electromagnetic coil, 7 --- are outer for the second stage, 5 for limit pin shaft, 42 for push rod, 41
Shell, 8 --- magnetic conductance seat, 9 --- moving armature.
Embodiment
The invention is further described with the following Examples.
A kind of embodiment of the downhole pulser control valve of low remanent magnetism of the invention, as shown in Figure 1, bag
Include：Valve port 1, discharge orifice 2, plug 3, push rod 4 and electromagnetic actuator device, the valve port 1 are connected with the discharge orifice 2, the electricity
Magnetic drive unit push rod 4 and plug 3 according to the control signal drive control received are moved towards valve port.
The plug 3 offers inner cavity 31, and one end of push rod 4 towards the valve port 1 is inserted in the inner cavity 31, described
Push rod 4 drives the plug 3 to block the valve port 1, and 31 cavity wall of inner cavity of plug 3 opens up fluted 32, and 4 front end of push rod is set
Limit pin shaft 41 is equipped with, the limit pin shaft 41 is inserted in the groove 32, along groove 32 described in 4 vibration-direction of push rod
Width be more than the width of the limit pin shaft 41 so that the limit pin shaft 41 can be when push rod 4 moves back and forth
Moved back and forth in groove 32.
Return spring 5 is further included, the one end of plug 3 away from valve port 1 is provided with the first stage 33, and push rod 4 is provided with second
The first stage 33 is fixed in stage 42, described 5 one end of return spring, and the other end is fixed on the second stage 42.
When electromagnetic actuator device driving push rod 4 is moved towards valve port 1, push rod 4 promotes return spring 5, and then promotes stifled
First 3 move towards valve port 1, when plug 3 props up valve port 1, are more than mud to plug 3 due to acting on the thrust of push rod 4 at this time
Pressure, and limit pin shaft 41 can move back and forth in groove 32, therefore push rod 4 may proceed to move forward at this time so that Hui Li
Spring 5 compresses；When the electric current of electromagnetic actuator device removes, electromagnetic actuator device understands rapid decrease to the thrust of push rod 4, though at this time
So can also be because of remanent magnetism and to push rod 4 there are certain thrust, but the inevitable return spring 5 that is significantly less than of the thrust is to push rod 4
Thrust, push rod 4 can fast fallback, untill limit pin shaft 41 touches the inner wall of groove 32, because at this moment having put
Remanent magnetism is taken off, plug 3 and push rod 4 can continue the rapid reset completely in the case where mud pressure promotes.
Compared with prior art, this technology mud that no longer places one's entire reliance upon promotes push rod 4 to reset the pressure of plug 3,
And, electromagnetic actuator device comes driving push rod 4 and plug 3 with the thrust significantly more than mud pressure, so as to fulfill to valve port 1
Quick blocking, release when being blocked to valve port 1 spring to the active force of push rod 4 also greater than mud pressure, can significantly reduce
The influence of remanent magnetism, blocks so as to quickly be released to valve port 1, and control valve completes closure --- release needed for the closure This move cycle
Time significantly reduce, response speed effectively improves, therefore the control valve being capable of significantly more efficient response high-frequency signal.
In the present embodiment, the electromagnetic actuator device includes electromagnetic coil 6, magnetic conductance seat 8 and the work being arranged in magnetic conductance seat 8
Moving armature 9, the electromagnetic coil 6 produce driving magnetic field according to electric control signal, and shell 7 of the driving magnetic field through control valve passes
The magnetic conductance seat 8 is handed to so as to drive moving armature 9 to be moved towards valve port 1, moving armature 9 connects the push rod 4, the control
Coercivity H≤35A/m of valve shell 7, maximum permeability μm >=0.012H/m, magnetic induction intensity when magnetic field intensity is 300A/m
B300≥1.1T.Since control valve shell 7 belongs to magnetic conduction device important in electromagnetic actuator device, control valve shell 7
Performance can seriously affect the situation of remanent magnetism, so as to influence the response speed of control valve.However, considering the shell of solenoid valve at present
During 7 materials, its changing firmness requirements is usually only considered, without considering its permeability, the application is due to recognizing remanent magnetism to control
The influence of response valve ability processed, therefore preferably conform to material of the material of These parameters as control valve shell 7.The opposing party
Face, since permeability is bigger, electromagnetic actuator device, which needs only to pass to less electric current, just can make battery armature obtain
Enough to magnetic field force, this aspect reduces the energy consumption of battery powered device, and underground field of detecting, underground electricity consumption are ten after all
Divide difficulty, system stability can effectively be improved by reducing power consumption, and the magnetic field intensity that battery powered device produces also compares
It is smaller, therefore it is also smaller to be transferred to the magnetic field intensity on controller housing, Gu it also can significantly reduce remanent magnetism.
Particularly, control valve shell 7 is coated with hard alloy layer.The hardness of the hard alloy layer is more than or equal to
1200HV0.3.The bond strength of the hard coat and control valve shell 7 is more than or equal to 120Mpa.The thickness of the hard coat
Degree is less than or equal to 0.2mm.When selecting the preferable material of permeability to be used as shell 7, inevitably, the shell 7 of control valve
Hardness can then decline, this can cause control valve outer surface to be subject to slurry erosion and be destroyed, therefore, in control valve
The outer surface coated with hard alloy-layer of shell 7, so that it is guaranteed that control valve surface is resistant to slurry erosion without destroyed.
Finally it should be noted that above example is only illustrating the technical solution of the invention, rather than to this hair
It is bright create protection domain limitation, although being explained with reference to preferred embodiment to the invention, this area it is general
Lead to it will be appreciated by the skilled person that can be to the technical solution technical scheme is modified or replaced equivalently of the invention, without departing from this
The spirit and scope of innovation and creation technical solution.
Claims (8)
1. a kind of downhole pulser control valve of low remanent magnetism, including valve port, discharge orifice, plug, push rod and electromagnetic drive dress
Put, the valve port is connected with the discharge orifice, and the electromagnetic actuator device drives the push rod according to the control signal received
Moved towards valve port, so that the push rod drives the plug to block the valve port, the electromagnetic actuator device includes electromagnetic wire
Circle, magnetic conductance seat and the moving armature being arranged in magnetic conductance seat, the electromagnetic coil produce driving magnetic field, institute according to electric control signal
State shell of the driving magnetic field through control valve and be transferred to the magnetic conductance seat so as to drive moving armature to be moved towards valve port, moving armature
Connect the push rod, it is characterised in that：Coercivity H≤35A/m of the control valve shell, maximum permeability μm >=0.012H/
M, 300 >=1.1T of magnetic induction density B when magnetic field intensity is 300A/m.
A kind of 2. downhole pulser control valve of low remanent magnetism as claimed in claim 1, it is characterised in that：The control valve
Shell is coated with hard alloy layer.
A kind of 3. downhole pulser control valve of low remanent magnetism as claimed in claim 2, it is characterised in that：The hard closes
The hardness of layer gold is more than or equal to 1200HV0.3.
A kind of 4. downhole pulser control valve of low remanent magnetism as claimed in claim 2, it is characterised in that：The hard applies
Layer is with controlling the bond strength of valve shell to be more than or equal to 120Mpa.
A kind of 5. downhole pulser control valve of low remanent magnetism as claimed in claim 2, it is characterised in that：The hard applies
The thickness of layer is less than or equal to 0.2mm.
A kind of 6. downhole pulser control valve of low remanent magnetism as claimed in claim 1, it is characterised in that：The plug is opened
Equipped with inner cavity, one end of the push rod towards valve port is inserted in the inner cavity.
A kind of 7. downhole pulser control valve of low remanent magnetism as claimed in claim 1, it is characterised in that：The plug
Inner cavity cavity wall or lateral wall open up fluted, and the push rod front end is provided with limit pin shaft, and the limit pin shaft is inserted in institute
State in groove, be more than the width of the limit pin shaft along the width of groove described in push rod vibration-direction, so that push rod
The limit pin shaft can move back and forth in a groove during reciprocating motion.
A kind of 8. downhole pulser control valve of low remanent magnetism as claimed in claim 1, it is characterised in that：Further include Hui Li
Spring, return spring one end are connected with push rod, and the other end is connected with plug, and the push rod makes the return spring deformation and then drive
The dynamic plug blocks the valve port, when the plug blocks the valve port, effect of the return spring to push rod and plug
Power is more than pressure of the liquid to valve port plug；The one end of the plug away from valve port is provided with the first stage, and the push rod is set
There is the second stage, the first stage is fixed in described return spring one end, and the other end is fixed on the second stage.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181338.0A CN105757260B (en) | 2016-03-28 | 2016-03-28 | A kind of downhole pulser control valve of low remanent magnetism |
| CN201711449034.9A CN108331924B (en) | 2016-03-28 | 2016-03-28 | Low-remanence underground pulse generator control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181338.0A CN105757260B (en) | 2016-03-28 | 2016-03-28 | A kind of downhole pulser control valve of low remanent magnetism |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711449034.9A Division CN108331924B (en) | 2016-03-28 | 2016-03-28 | Low-remanence underground pulse generator control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105757260A CN105757260A (en) | 2016-07-13 |
| CN105757260B true CN105757260B (en) | 2018-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711449034.9A Active CN108331924B (en) | 2016-03-28 | 2016-03-28 | Low-remanence underground pulse generator control valve |
| CN201610181338.0A Active CN105757260B (en) | 2016-03-28 | 2016-03-28 | A kind of downhole pulser control valve of low remanent magnetism |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711449034.9A Active CN108331924B (en) | 2016-03-28 | 2016-03-28 | Low-remanence underground pulse generator control valve |
Country Status (1)
| Country | Link |
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| CN (2) | CN108331924B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626940B (en) * | 2016-03-28 | 2018-04-20 | 广东普洛测控科技有限公司 | A kind of downhole pulser control valve |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB325001A (en) * | 1928-11-09 | 1930-02-10 | William Dopp Shaffer | Valves for controlling flow of fluid |
| CN2406123Y (en) * | 1999-11-22 | 2000-11-15 | 王群辉 | Double stabilized pulse electromagnetic water-inlet valve |
| CN2685528Y (en) * | 2004-03-09 | 2005-03-16 | 中国石化集团胜利石油管理局钻井工艺研究院 | Underground high pressure hydraulic pulse generator |
| DE102013209923A1 (en) * | 2013-05-28 | 2014-12-04 | Continental Teves Ag & Co. Ohg | Electromagnetic valve, in particular for slip-controlled motor vehicle brake systems |
| DE202013104062U1 (en) * | 2013-09-06 | 2013-09-18 | Kendrion (Donaueschingen/Engelswies) GmbH | Electromagnetic valve system |
| CN203868466U (en) * | 2014-04-15 | 2014-10-08 | 北京六合伟业科技股份有限公司 | Electromagnetic valve for pulse generator |
| CN204738089U (en) * | 2015-06-03 | 2015-11-04 | 王铁钢 | M sections core flower pillow selects needle solenoid valve |
| CN204677861U (en) * | 2015-06-10 | 2015-09-30 | 斯伦贝谢金地伟业油田技术(山东)有限公司 | A kind of underground slurry pulse generator solenoid valve |
| CN105350958A (en) * | 2015-11-20 | 2016-02-24 | 武汉海阔科技有限公司 | Self power generating slurry turbine type pulse generator |
| CN205534264U (en) * | 2016-03-28 | 2016-08-31 | 广东普洛测控科技有限公司 | Control valve of impulse generator in pit of low remanence |
| CN105626940B (en) * | 2016-03-28 | 2018-04-20 | 广东普洛测控科技有限公司 | A kind of downhole pulser control valve |
| CN205896341U (en) * | 2016-03-28 | 2017-01-18 | 广东普洛测控科技有限公司 | Impulse generator control valve in pit |
-
2016
- 2016-03-28 CN CN201711449034.9A patent/CN108331924B/en active Active
- 2016-03-28 CN CN201610181338.0A patent/CN105757260B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108331924B (en) | 2020-04-14 |
| CN108331924A (en) | 2018-07-27 |
| CN105757260A (en) | 2016-07-13 |
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