CN105626940B - A kind of downhole pulser control valve - Google Patents
A kind of downhole pulser control valve Download PDFInfo
- Publication number
- CN105626940B CN105626940B CN201610181089.5A CN201610181089A CN105626940B CN 105626940 B CN105626940 B CN 105626940B CN 201610181089 A CN201610181089 A CN 201610181089A CN 105626940 B CN105626940 B CN 105626940B
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- Prior art keywords
- push rod
- control valve
- plug
- valve
- valve port
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- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 1
- 230000005389 magnetism Effects 0.000 abstract description 17
- 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
- 238000001514 detection method Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000006854 communication Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000003628 erosive effect Effects 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
- 230000009514 concussion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method 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
- 230000001052 transient effect Effects 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
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Acoustics & Sound (AREA)
- Remote Sensing (AREA)
- Geophysics (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,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 downhole pulser 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
Reset of the remanent magnetism of magnetic drive unit on push rod influences, so that control valve can effectively carry out high frequency response.
Invention thinking：Inventor has found, at high frequencies, in order to fast and effectively block valve port, in closure valve port
During, preferable electromagnetic actuator device is applied to the pressure more than mud that should be by a relatively large margin on push rod, also be exactly by
Need to apply larger motive force during closure, therefore the thrust that remanent magnetism produces after revocation electric current is still larger.This also says
Bright, in the closure stage, the energy that electromagnetic actuator device provides is superfluous, so if can block the superfluous energy
Stage is temporary transient to be stored, and the thrust brought when releasing and blocking for offsetting remanent magnetism, then can effectively be reduced
Reset of the remanent magnetism of electromagnetic actuator device on push rod and plug influences, and improves the reset speed of push rod and plug.
The purpose of the invention is achieved through the following technical solutions：
Provide a kind of downhole pulser control valve, 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 the valve port, so that the plug blocks/open the valve port, further include return spring, return spring one end with
Push rod connects, and the other end is connected with plug, and the push rod makes the return spring deformation and then drives described in the plug closure
Valve port, when the plug blocks the valve port, the return spring blocks up valve port more than liquid the active force of push rod and plug
The pressure of head.
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.
Wherein, the electromagnetic actuator device includes electromagnetic coil, magnetic conductance seat and the moving armature being arranged in magnetic conductance seat, institute
State electromagnetic coil and driving magnetic field is produced according to electric control signal, shell of the driving magnetic field through control valve is transferred to the magnetic conduction
For seat so as to drive moving armature to be moved towards valve port, moving armature connects the push rod.
Wherein, coercivity H≤35A/m of the control valve shell, maximum permeability μm >=0.012H/m, magnetic field intensity
For 300A/m when magnetic induction density B 300 >=1.1T.
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.
The beneficial effect of the invention：The invention between the push rod and plug of control valve by setting back power bullet
Spring, when electromagnetic actuator device driving push rod promotes plug closure valve port, spring can be compressed, and spring force drives less than electromagnetism at this time
Dynamic device is applied to the thrust on push rod, and the thrust more than mud pressure to plug, its one end pushes plug and props up mud at valve port
Pressure is starched, the other end applies deboost to push rod, when valve port to be opened removes the control signal electricity of electromagnetic actuator device
During stream, although push rod is to spring, there are part thrust, the remanent magnetism thrust also because of the remanent magnetism to be significantly less than the reaction of spring
Power, push rod just can fast fallback and break away from remanent magnetism thrust, then promote lower end cap and push rod to reset completely in mud pressure, from
And control valve is enabled effectively to carry out high frequency response.
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 downhole pulser control valve 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 downhole pulser control valve of the invention, as shown in Figure 1, including：Valve port
1st, discharge orifice 2, plug 3, push rod 4 and electromagnetic actuator device, the valve port 1 are connected with the discharge orifice 2, the electromagnetic drive dress
Put and drive the push rod 4 to be moved towards the valve port according to the control signal received.
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/open the valve port 1, and 31 cavity wall of inner cavity of plug 3 opens up fluted 32, the push rod 4
Front end is provided with limit pin shaft 41, and the limit pin shaft 41 is inserted in the groove 32, described in 4 vibration-direction of push rod
The width of groove 32 is more than the width of the limit pin shaft 41, so that the limit pin shaft 41 when push rod 4 moves back and forth
It can be 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 Rapid reset, and since limit pin shaft 41 is inserted in groove 32, push rod 4 resets to certain journey
It can quickly drive plug 3 to reset again after degree, so as to avoid push rod 4 from departing from plug 3, also avoid push rod 4 from stretching return spring 5 and lead
The concussion of cause.Push rod 4 can fast fallback, untill limit pin shaft 41 touches the inner wall of groove 32, because at this moment
Remanent magnetism is broken away from, 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.
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 (10)
1. a kind of downhole pulser control valve, including valve port, discharge orifice, plug, push rod and electromagnetic actuator device, the valve
Mouth is connected with the discharge orifice, and the electromagnetic actuator device drives the push rod towards the valve according to the control signal received
Mouth movement, so that the push rod drives the plug to block the valve port, it is characterised in that：Return spring is further included, returns power bullet
Spring one end is connected with push rod, and the other end is connected with plug, and the push rod makes the return spring deformation and then drives the plug
The valve port is blocked, when the plug blocks the valve port, the return spring is more than liquid to the active force of push rod and plug
To the pressure of valve port plug.
A kind of 2. downhole pulser control valve as claimed in claim 1, it is characterised in that：In the plug offers
Chamber, one end of the push rod towards valve port are inserted in the inner cavity.
A kind of 3. downhole pulser control valve as claimed in claim 1, it is characterised in that：The inner cavity cavity wall of the plug
Or lateral wall opens up fluted, the push rod front end is provided with limit pin shaft, and the limit pin shaft is inserted in the groove,
It is more than the width of the limit pin shaft along the width of groove described in push rod vibration-direction, so that when push rod moves back and forth
The limit pin shaft can move back and forth in a groove.
A kind of 4. downhole pulser control valve as claimed in claim 1, it is characterised in that：The plug is away from valve port
One end is provided with the first stage, and the push rod is provided with the second stage, and the first stage is fixed in described return spring one end, another
The second stage is fixed at end.
A kind of 5. downhole pulser control valve as claimed in claim 1, it is characterised in that：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.
A kind of 6. downhole pulser control valve as claimed in claim 5, it is characterised in that：The control valve shell is rectified
Stupid power Hc≤35A/m, maximum permeability μm >=0.012H/m, 300 >=1.1T of magnetic induction density B when magnetic field intensity is 300A/m.
A kind of 7. downhole pulser control valve as claimed in claim 5, it is characterised in that：The control valve shell spraying
There is hard alloy layer.
A kind of 8. downhole pulser control valve as claimed in claim 7, it is characterised in that：The hard alloy layer it is hard
Degree is more than or equal to 1200HV0.3.
A kind of 9. downhole pulser control valve as claimed in claim 7, it is characterised in that：The hard coat and control
The bond strength of valve shell is more than or equal to 120Mpa.
A kind of 10. downhole pulser control valve as claimed in claim 7, it is characterised in that：The thickness of the hard coat
Degree is less than or equal to 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181089.5A CN105626940B (en) | 2016-03-28 | 2016-03-28 | A kind of downhole pulser control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181089.5A CN105626940B (en) | 2016-03-28 | 2016-03-28 | A kind of downhole pulser control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105626940A CN105626940A (en) | 2016-06-01 |
| CN105626940B true CN105626940B (en) | 2018-04-20 |
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ID=56042135
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610181089.5A Active CN105626940B (en) | 2016-03-28 | 2016-03-28 | A kind of downhole pulser control valve |
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| CN (1) | CN105626940B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331924B (en) * | 2016-03-28 | 2020-04-14 | 广东普洛测控科技有限公司 | Low-remanence underground pulse generator control valve |
| US9863197B2 (en) | 2016-06-06 | 2018-01-09 | Bench Tree Group, Llc | Downhole valve spanning a tool joint and methods of making and using same |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201973331U (en) * | 2009-11-30 | 2011-09-14 | 楼向阳 | Magnet structure of magnetic coupling type thermostatic valve |
| 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 |
| CN204372282U (en) * | 2014-12-31 | 2015-06-03 | 瑞安市东方阀门有限公司 | Heavy caliber low voltage difference solenoid valve |
| CN108331924B (en) * | 2016-03-28 | 2020-04-14 | 广东普洛测控科技有限公司 | Low-remanence underground pulse generator 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 |
| 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 |
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- 2016-03-28 CN CN201610181089.5A patent/CN105626940B/en active Active
Also Published As
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| CN105626940A (en) | 2016-06-01 |
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