CN105626940A - Underground pulse generator control valve - Google Patents
Underground pulse generator control valve Download PDFInfo
- Publication number
- CN105626940A CN105626940A CN201610181089.5A CN201610181089A CN105626940A CN 105626940 A CN105626940 A CN 105626940A CN 201610181089 A CN201610181089 A CN 201610181089A CN 105626940 A CN105626940 A CN 105626940A
- Authority
- CN
- China
- Prior art keywords
- push rod
- control valve
- valve port
- valve
- stifled head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- F16K27/00—Construction of housing; Use of materials therefor
Abstract
The invention relates to the technical field of oil exploration, drilling and production, in particular to an underground pulse generator control valve. According to the control valve, a return spring is arranged between a push rod and a plug. When an electromagnetic driving device drives the push rod to push the plug to block a valve opening, the spring is compressed, and at the time, the spring force is smaller than the push force applied to the push rod by the electromagnetic driving device and larger than the push force applied to the plug by mortar pressure. One end of the spring pushes the plug to resist the mortar pressure at the valve opening, and the other end of the spring applies reverse push force to the push rod. When the valve opening needs to be opened by removing a control signal current of the electromagnetic device, even though the push rod has part of push force on the spring due to residual magnetism, the residual magnetism push force is greatly smaller than the reactive force of the spring, the push rod can return rapidly and get rid of the residual magnetism push force, and the plug and the push rod are completely reset under the pushing of the mortar pressure, so that the control valve can effectively carry out high-frequency response.
Description
Technical field
The invention relates to petroleum prospecting and drilling and production technology field, in particular to a kind of downhole pulser control valve.
Background technology
In petroleum prospecting, drilling process, drilling outfit is essential instrument. The core of drilling outfit is drill bit, it is thus desirable to monitor the drilling situation of drill bit at any time. But, along with going deep into of probing, drill bit can go deep in stratum, staff on ground is difficult to directly observe the situation of drill bit, consequently, it is desirable to arrange multiple monitoring device at drill bit place, such as direction sensor and temperature sensor etc., and the data detected are delivered to ground by communication link, carry out receiving and analyzing by the staff on ground.
Owing to subsurface environment is extremely disliked slightly, detection device is difficult to be communicated with ground by general communication link, is also difficult to the wireless mode by routine and communicates with ground. At present, the mode of ground and underground communication generally adopts a surge generator to control to be realized by slurry transportation pipeline, its principle arranges surge generator in mud runner, surge generator is got through according to certain rule/is blocked and (not completes to block in practical application, normally reduce the aperture of runner) mud runner, thus making mud runner produce regular pulse, ground handling personnel are in ground detection and decode these pulses to obtain detection data.
Concrete, surge generator generally comprises main valve and control valve, the flow-limiting valve at place outside guiding valve being set in main valve and being arranged at guiding valve, the tail end of main valve is connected with control valve, a mud part flow to control valve through guiding valve inner chamber, and flow out in the earial drainage hole of control valve, another part is by the space between guiding valve and flow-limiting valve, when the valve port of control valve is closed, the mud of guiding valve inner chamber cannot flow out, chamber pressure raises, thus promote guiding valve to slide, reduce the gap between guiding valve and flow-limiting valve, the aperture of whole slurry channel reduces, thus mud integral pressure raises, produce a pulse. therefore, as long as control valve is according to the valve port of the orderly on-off control valve of signal of detection device, whole slurry channel just can produce a regular pulse.
But in practice, the hertzian wave strict conformance that the mechanical wave that surge generator produces always is difficult to detection device occurs, particularly when high frequency. Applicant finds through research, and one of them major reason is exactly the remanent magnetism problem of control valve. In control valve, usually an electromagnetic actuator device (normally coil) is needed, the electrical signal that electromagnetic actuator device is sent according to detection device, a magnetic field is produced when needs shutoff valve port, thus promote the push rod in control valve, push rod promotes stifled head shutoff valve port again, then cancels magnetic field when needs release the shutoff to valve port, and the mud pressure outside valve port can promote stifled head and push rod to reset. But in fact, after removing the electrical signal of electromagnetic actuator device, permeable material still can remain remanent magnetism, magnetic field is difficult to completely dissolve fast, therefore push rod is still had certain thrust, this thrust can offset the pressure of the initial period counteracting mud of the pressure of part mud in push rod reseting procedure, thus causes resetting slowly. And resetting slowly in situation, then it is difficult to carry out fast high frequency response.
Summary of the invention
The object of the invention is to avoid above-mentioned weak point of the prior art and provide a kind of remanent magnetism that can reduce electromagnetic actuator device the reset of push rod to be affected, so that control valve can effectively carry out high frequency response.
Invention thinking: contriver finds, at high frequencies, in order to shutoff valve port fast and effectively, in the process of shutoff valve port, preferred electromagnetic actuator device is applied to the pressure that should be greater than mud by a relatively large margin on push rod, also just owing to needing in shutoff process to apply bigger impellent, the thrust that after therefore cancelling electric current, remanent magnetism produces is still bigger. This also illustrates, in the shutoff stage, the energy that electromagnetic actuator device provides is superfluous, if therefore can by the energy of this surplus in temporary transient the storing of shutoff stage, and when releasing shutoff for offsetting the thrust that remanent magnetism brings, then can effectively reduce the remanent magnetism of electromagnetic actuator device to the reset impact of push rod and stifled head, it is to increase the reset speed of push rod and stifled head.
The object of the invention is achieved through the following technical solutions:
Provide a kind of downhole pulser control valve, comprise valve port, earial drainage hole, stifled head, push rod and electromagnetic actuator device, described valve port is connected with described earial drainage hole, described electromagnetic actuator device drives described push rod to move towards described valve port according to the control signal received, so that described stifled head shutoff/open described valve port, also comprise back power spring, go back to power spring one end to be connected with push rod, the other end is connected with stifled head, described push rod makes described time power spring deformation and then drives valve port described in described stifled head shutoff, when described stifled head blocks described valve port, described time the reactive force of push rod and stifled head is greater than liquid to the pressure of the stifled head of valve port by power spring.
Wherein, described stifled head has offered inner chamber, and described push rod is inserted in described inner chamber towards one end of valve port.
Wherein, inner chamber chamber wall or the outer side wall of described stifled head have offered groove, described push rod front end is provided with spacing bearing pin, described spacing bearing pin is inserted in described groove, the width being greater than described spacing bearing pin along the width of groove described in push rod vibration-direction, so that described spacing bearing pin can to-and-fro movement in a groove during push rod to-and-fro movement.
Wherein, described stifled head is provided with the first stage away from one end of valve port, and described push rod is provided with second-order platform, and described time the first stage is fixed in power spring one end, and the other end is fixed on second-order platform.
Wherein, the moving armature that described electromagnetic actuator device comprises solenoid, magnetic conductance seat and is arranged in magnetic conductance seat, described solenoid produces driving magnetic field according to electric control signal, described driving magnetic field is passed to described magnetic conductance seat through the shell of control valve thus drives moving armature to move towards valve port, and moving armature connects described push rod.
Wherein, the coercivity H��35A/m of described control valve shell, maximum permeability ��m >=0.012H/m, magnetic induction density B 300 >=1.1T when magneticstrength is 300A/m.
Wherein, described control valve shell is coated with hard alloy layer.
Wherein, the hardness of described hard alloy layer is more than or equal to 1200HV0.3.
Wherein, the bonding strength of described hard coat and control valve shell is more than or equal to 120Mpa.
Wherein, the thickness of described hard coat is less than or equal to 0.2mm.
The useful effect of the invention: the invention by arranging back power spring between the push rod and stifled head of control valve, when electromagnetic actuator device drives push rod promotion to block up head shutoff valve port, spring can be compressed, now spring power is less than the thrust that electromagnetic actuator device is applied on push rod, it is greater than mud pressure to the thrust of stifled head, its one end pushes stifled head and supports valve port place mud pressure, push rod is applied oppositely thrust by the other end, when to be opened valve port and remove the control signal electric current of electromagnetic actuator device, although also being there is part thrust because of remanent magnetism by push rod in spring, but this remanent magnetism thrust is significantly less than the reactive force of spring, push rod just can return fast and move back and break away from remanent magnetism thrust, then lower end cap and push rod is promoted to reset completely at mud pressure, so that control valve can effectively carry out high frequency response.
Accompanying drawing explanation
Accompanying drawing is utilized the invention to be described further, but the embodiment in accompanying drawing does not form any restriction to the invention, for the those of ordinary skill of this area, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to the following drawings.
Fig. 1 is the structural representation of a kind of downhole pulser control valve of the invention.
Include in FIG:
1 valve port, 2 earial drainage holes, 3 stifled head, 31 inner chambers, 32 grooves, 33 first stages, 4 push rods, 41 spacing bearing pins, 42 second-order platforms, 5 times power springs, 6 solenoids, 7 shells, 8 magnetic conductance seats, 9 moving armatures.
Embodiment
With the following Examples the invention is further described.
The embodiment of a kind of downhole pulser control valve of the invention, as shown in Figure 1, comprise: valve port 1, earial drainage hole 2, stifled 3, push rod 4 and electromagnetic actuator device, described valve port 1 is connected with described earial drainage hole 2, and described electromagnetic actuator device drives described push rod 4 to move towards described valve port according to the control signal received.
Offer inner chamber 31 for described stifled 3, described push rod 4 is inserted in described inner chamber 31 towards one end of valve port 1, described push rod 4 drives described stifled 3 shutoff/open described valve port 1, groove 32 offered by the inner chamber 31 chamber wall of stifled 3, described push rod 4 front end is provided with spacing bearing pin 41, described spacing bearing pin 41 is inserted in described groove 32, along the width of groove 32 described in push rod 4 vibration-direction be greater than described spacing bearing pin 41 width so that described spacing bearing pin 41 can to-and-fro movement in groove 32 during push rod 4 to-and-fro movement.
Also comprising back power spring 5, stifled 3 one end away from valve port 1 is provided with the first stage 33, and push rod 4 is provided with second-order platform 42, and described time the first stage 33 is fixed in power spring 5 one end, and the other end is fixed on second-order platform 42.
When electromagnetic actuator device drives push rod 4 to move towards valve port 1, push rod 4 promotes back power spring 5, and then promote stifled 3 to move towards valve port 1, when supporting valve port 1 for stifled 3, now owing to acting on the thrust of push rod 4 and be greater than mud to the pressure of stifled 3, and spacing bearing pin 41 can to-and-fro movement in groove 32, therefore now push rod 4 can continue reach so that return power spring 5 compress; When the electric current of electromagnetic actuator device removes, electromagnetic actuator device is to the thrust meeting rapid decrease of push rod 4, although now also can be there is certain thrust in push rod 4 because of remanent magnetism, but this thrust is inevitable is significantly less than back power spring 5 to the thrust of push rod 4, push rod 4 can Rapid reset, and it is inserted in groove 32 due to spacing bearing pin 41, therefore push rod 4 resets to and stifled 3 can be driven again after to a certain degree fast to reset, thus avoid push rod 4 to depart from stifled 3, also avoid push rod 4 to stretch back concussion that power spring 5 causes. Push rod 4 can return fast and move back, until spacing bearing pin 41 touches the inwall of groove 32, because at this moment having broken away from remanent magnetism, stifled 3 and push rod 4 just can continue to have resetted completely rapidly under mud pressure promotion.
Compared with prior art, this technology depends on mud no longer completely, and to the pressure of stifled 3, to impel, push rod 4 resets, and, electromagnetic actuator device be significantly greater than mud pressure thrust to drive push rod 4 and stifled 3, thus realize the quick blocking to valve port 1, release and the reactive force of push rod 4 is also greater than mud pressure by spring during valve port 1 shutoff, can significantly reduce the impact of remanent magnetism, thus fast valve port 1 is released shutoff, control valve completes shutoff and releases time needed for the shutoff This move cycle and significantly reduce, response speed effectively improves, therefore this control valve can more effectively respond high-frequency signal.
In the present embodiment, the moving armature 9 that described electromagnetic actuator device comprises solenoid 6, magnetic conductance seat 8 and is arranged in magnetic conductance seat 8, described solenoid 6 produces driving magnetic field according to electric control signal, described driving magnetic field is passed to described magnetic conductance seat 8 through the shell 7 of control valve thus drives moving armature 9 to move towards valve port 1, moving armature 9 connects described push rod 4, coercivity H��the 35A/m of described control valve shell 7, maximum permeability ��m >=0.012H/m, magnetic induction density B 300 >=1.1T when magneticstrength is 300A/m. Leading magnetic device owing to control valve shell 7 belongs to important in electromagnetic actuator device, therefore the performance of control valve shell 7 can seriously affect the situation of remanent magnetism, thus affects the response speed of control valve. But, at present when considering the materials of shell 7 of magnetic valve, it is generally only consider its changing firmness requirements, and its permeability can not be considered, the application owing to recognizing that remanent magnetism is on the impact of control valve responding ability, it is preferred to meet These parameters material as the material of control valve shell 7.
Especially, control valve shell 7 is coated with hard alloy layer. The hardness of described hard alloy layer is more than or equal to 1200HV0.3. The bonding strength of described hard coat and control valve shell 7 is more than or equal to 120Mpa. The thickness of described hard coat is less than or equal to 0.2mm. When preferably material is used as shell 7 to selection permeability, inevitable, the hardness of the shell 7 of control valve then can decline to some extent, this can cause control valve outside surface easily to suffer slurry erosion and be destroyed, therefore, at the outside surface coated with hard alloy layer of control valve shell 7, so that it is guaranteed that control valve surface can tolerate slurry erosion and not be destroyed.
Finally should be noted that; above embodiment is only in order to illustrate the technical scheme of the invention; but not the restriction to the invention protection domain; although having done to explain to the invention with reference to better embodiment; it will be understood by those within the art that; the technical scheme of the invention can be modified or equivalent replacement, and not depart from essence and the scope of the invention technical scheme.
Claims (10)
1. a downhole pulser control valve, comprise valve port, earial drainage hole, stifled head, push rod and electromagnetic actuator device, described valve port is connected with described earial drainage hole, described electromagnetic actuator device drives described push rod to move towards described valve port according to the control signal received, so that described push rod drives valve port described in described stifled head shutoff, it is characterized in that: also comprise back power spring, go back to power spring one end to be connected with push rod, the other end is connected with stifled head, described push rod makes described time power spring deformation and then drives valve port described in described stifled head shutoff, when described stifled head blocks described valve port, described time the reactive force of push rod and stifled head is greater than liquid to the pressure of the stifled head of valve port by power spring.
2. a kind of downhole pulser control valve as claimed in claim 1, it is characterised in that: described stifled head has offered inner chamber, and described push rod is inserted in described inner chamber towards one end of valve port.
3. a kind of downhole pulser control valve as claimed in claim 1, it is characterized in that: inner chamber chamber wall or the outer side wall of described stifled head have offered groove, described push rod front end is provided with spacing bearing pin, described spacing bearing pin is inserted in described groove, along the width of groove described in push rod vibration-direction be greater than described spacing bearing pin width so that described spacing bearing pin can to-and-fro movement in a groove during push rod to-and-fro movement.
4. a kind of downhole pulser control valve as claimed in claim 1, it is characterized in that: described stifled head is provided with the first stage away from one end of valve port, described push rod is provided with second-order platform, and described time the first stage is fixed in power spring one end, and the other end is fixed on second-order platform.
5. a kind of downhole pulser control valve as claimed in claim 1, it is characterized in that: the moving armature that described electromagnetic actuator device comprises solenoid, magnetic conductance seat and is arranged in magnetic conductance seat, described solenoid produces driving magnetic field according to electric control signal, described driving magnetic field is passed to described magnetic conductance seat through the shell of control valve thus drives moving armature to move towards valve port, and moving armature connects described push rod.
6. a kind of downhole pulser control valve as claimed in claim 5, it is characterised in that: the coercivity H��35A/m of described control valve shell, maximum permeability ��m >=0.012H/m, magnetic induction density B 300 >=1.1T when magneticstrength is 300A/m.
7. a kind of downhole pulser control valve as claimed in claim 5, it is characterised in that: described control valve shell is coated with hard alloy layer.
8. a kind of downhole pulser control valve as claimed in claim 7, it is characterised in that: the hardness of described hard alloy layer is more than or equal to 1200HV0.3.
9. a kind of downhole pulser control valve as claimed in claim 7, it is characterised in that: the bonding strength of described hard coat and control valve shell is more than or equal to 120Mpa.
10. a kind of downhole pulser control valve as claimed in claim 7, it is characterised in that: the thickness of described hard coat 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 true CN105626940A (en) | 2016-06-01 |
| CN105626940B CN105626940B (en) | 2018-04-20 |
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Family Applications (1)
| 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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| Country | Link |
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| CN (1) | CN105626940B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105757260A (en) * | 2016-03-28 | 2016-07-13 | 广东普洛测控科技有限公司 | Low-remanence control valve of downhole pulse generator |
| CN107461172A (en) * | 2016-06-06 | 2017-12-12 | 本奇特里集团有限责任公司 | Downhole valve of straddle tool joint and production and preparation method thereof |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105757260A (en) * | 2016-03-28 | 2016-07-13 | 广东普洛测控科技有限公司 | Low-remanence control valve of downhole pulse generator |
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| CN107461172B (en) * | 2016-06-06 | 2021-10-29 | 本奇特里集团有限责任公司 | Downhole valve for crossover tool joints and methods of making and using same |
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| US11661806B2 (en) | 2016-06-06 | 2023-05-30 | Bench Tree Group, Llc | Downhole valve spanning a tool joint and methods of making and using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105626940B (en) | 2018-04-20 |
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