CN201560757U - Mud pulse generator - Google Patents
Mud pulse generator Download PDFInfo
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- CN201560757U CN201560757U CN2009202999202U CN200920299920U CN201560757U CN 201560757 U CN201560757 U CN 201560757U CN 2009202999202 U CN2009202999202 U CN 2009202999202U CN 200920299920 U CN200920299920 U CN 200920299920U CN 201560757 U CN201560757 U CN 201560757U
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- pulse generator
- mud
- mud pulse
- rotor drum
- pulse
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- 230000008878 coupling Effects 0.000 claims abstract description 49
- 238000010168 coupling process Methods 0.000 claims abstract description 49
- 238000005859 coupling reaction Methods 0.000 claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000000926 separation method Methods 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 12
- 238000005553 drilling Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Abstract
The utility model relates to an underground mud pulse generator, and mainly solves the problems as follows: the present continuous wave pulse generator has excessively-small positive pressure pulse value during generating hydraulic power and is difficult to detect on the ground, and a mushroom head shape positive pulse generator has low pulse speed. The mud pulse generator is mounted in a drill collar (1) and comprises a driving device, a magnetic coupling device and a pulse generating device, wherein the driving device is used for transmitting the power to the magnetic coupling device. The pulse generating device comprises a stator cylinder (15) and a rotor cylinder (16); and a side liquid hole (3) on the stator cylinder (15) is alternately closed and opened by rotating the rotor cylinder (16). The mud pulse generator not only can generate continuous wave pulse with high-pressure difference amplitude, but also can work at positive pulse with enough mechanical strength.
Description
Technical field:
The utility model relates to the oil drilling field and bores used mud pulse generator, the especially mud pulse generator of directional well down-hole information transmission.
Background technology:
In exploration of oil and gas field, development process, in order promptly and accurately to obtain drilling data, further understand the oily situation on stratum, allow drill bit length go up " eyes ", while creep into the various data of just obtaining the stratum, well logging during that Here it is.Well logging during not only can be logged well to the well, particularly horizontal well of any situation, and utilizes the drilling parameter and the formation parameter that record in time to adjust bit course, makes it to creep into along the target zone direction.Because the formation parameter that well logging during obtains is just to have bored the formation parameter of opening, near the reset condition on stratum, the oil-containing, the gas evaluation that are used for bad ground are more favourable than general wireline logging for it.The well logging during instrument is placed in the drill collar, except that conventional loggings such as measured resistivity, the velocity of sound, neutron porosity, density and some imaging logging, also measures drilling parameters such as the pressure of the drill, moment of torsion, rotating speed, annular pressure.The key technology of well logging during is the signal transmission, at present widely used is mud pulse generator transmission mud-pressure pulses, this is the method that present well logging during instrument generally adopts, and it is that measured parameter is transformed into mud-pressure pulses, is sent to ground with mud circulation.Measured parameter becomes height " 1 ", low " 0 " signal of telecommunication behind digital coding, by the mushroom head of its control mud pulse generator, when being encoded to " 1 ", move on the mushroom head, and the mud resistance of the bell of flowing through is increased, and produces additonal pressure.When being encoded to " 0 ", the mushroom head is got back to original position downwards, and pressure is reduced to normally.This is the positive pulse transmission system, and the problem of this type systematic is that the speed of transmission data is lower, only several bits per seconds, and incompatible down-hole multi-parameter now is with the transmission of the information of boring.Similarly also have negative pulse transmission system, continuous wave transmission system.
The continuous wave transmission system, it is the pressure oscillation that the principle that opens and closes with axial rotary valve on the drill collar of down-hole produces mud, this modulated mud pressure signal of ground detection is decoded and is obtained downhole data, its advantage is that transfer of data contains much information soon, can reach the speed of tens bits per seconds, existing issue is that the pressure oscillation value of mud signal is too little, well depth and mud badly all can flood pressure signal, thought all that both at home and abroad various ways improve the mechanical means that produces down-hole continuous pressure wave amplitude, promptly at the improvement and the matched in clearance of rotary valve, all get nowhere, can only reach the amplitude of 0.7MPa, big just bad, also to do the apolegamy of valve clearance before going into the well, very inconvenience.
Mud pulse generator is the important component part in the logging while drilling technology equipment.And existing continuous wave impulse generator adopts Control Shaft to liquid pass hole, the pulse that produces, the hydraulic blow that the mechanical part of paired pulses generator produces is very complicated, and worsen because of the drilling mud changes of properties, and be limited in drill string inner radial space, Control Shaft needs big could mechanically do solid reliable of radial space to liquid pass hole.
The utility model content:
Too small in order to solve existing continuous wave impulse generator in generation waterpower positive pressure pulse value, the ground detection difficulty, the pulse rate of mushroom head dummy positive pulse generator is low, waterpower pulse pressure is to the problem of mechanical part damage, the utility model provides a kind of mud pulse generator, this mud pulse generator not only can produce the continuous wave pulse of High Pressure Difference amplitude in wellbore construction, and can work in the positive pulse mode because of its enough mechanical strength.
The technical solution of the utility model is: it is installed in this mud pulse generator in the drill collar, and it comprises drive unit, magnetic force coupling device and pulse generating unit, and drive unit is used for giving described magnetic force coupling device with power transmission; Described pulse generating unit comprises armature spindle, stator tube, the rotor drum that mounting flange, upper end link to each other with the magnetic force coupling device; The lower end of described armature spindle connects rotor drum and can drive the rotor drum rotation; The mounting flange periphery is provided with the liquid pass hole that mud is provided to drill bit continuously, have on the armature spindle periphery mounting flange with stator tube in the liquid passing channle that communicates, and can make mud enter the side opening of stator tube; When rotor drum rotated, rotor drum upside liquid hole can make the side opening on the stator tube close at intervals and open.
The sidewall of described rotor drum is provided with side liquid hole, and side liquid hole can be aimed at side opening at intervals in the rotor drum rotary course.
The beneficial effect that the utlity model has is: this mud pulse generator is owing to bottom in the employing drill collar has been fixed with the drive unit of driving effect, plays the magnetic force coupling device of sealing and coupling and has produced the mud-pulse generating means of continuous positive wave side feed liquor pulse, drive unit drives the magnetic force coupling device and rotates, the magnetic force coupling device drives the mud-pulse generating means, drive unit, magnetic force coupling device and mud-pulse generating means periphery axially are respectively arranged with fluid passage and liquid pass hole, and side opening and side liquid pore structure are radially arranged on the pulser wall.Utilize power supply to power to stepper motor, driving the coupling axle by stepper motor rotates, coupling axle and outer magnetic bucket coupling, and the outer magnetic bucket of drive rotates, outer magnetic bucket drives rotor drum by armature spindle and rotates, and by corresponding side opening on the continuous switch stator tube in rotor drum upside liquid hole, makes mud produce pressure pulse, ground installation promptly is convertible into different survey data by detecting the variation of standpipe pressure continuously through decoding.Because wave source is that the hydrodynamic wave (H wave) power of its generation mainly is radial load, mechanically supports the axial space that radial load needs drill string inside by corresponding side opening on the continuous switch stator tube in rotor drum upside liquid hole, be fully rich, that mechanically can do is very strong.Thus, this mud pulse generator can produce impulse wave and single positive pulse in high fluctuation pressure reduction ground continuously in wellbore construction.
Description of drawings:
Accompanying drawing 1 is that this mud pulse generator places the topology view in the drill collar;
Accompanying drawing 2 is the utility model structural representations;
Accompanying drawing 3 is the utility model driving device structure schematic diagrames;
Accompanying drawing 4 is the utility model magnetic force coupling device structural representations;
Accompanying drawing 5 is the utility model mud-pulse generating means structural representations.
1-drill collar among the figure, 2-liquid pass hole, 3-side opening; the 4-seal casinghousing, 5-power supply, 6-stepper motor; 7-pinion, 8-gear shaft, 9-be coupled the axle; the 10-separation sleeve, the outer magnetic bucket of 11-, 12-magnetic patch; the 13-mounting flange, 14-armature spindle, 15-stator tube; the 16-rotor drum, 17-protective sleeve, 18-carbide ring; 19-alloy cover, 20-end cover, 21-gear wheel; the 22-gear, 23-side liquid hole, 24-crosses the liquid passage; the 25-alloy hoop, 26-crosses line three-way hole, 27-lead seal protection joint; the 28-upper supporting plate, the 29-lower carrier plate.
The specific embodiment:
Below in conjunction with accompanying drawing will the utility model is described in further detail:
Shown in accompanying drawing 1, it is installed in this mud pulse generator in the drill collar 1, it comprised the driving effect drive unit, play the magnetic force coupling device of sealing and coupling and produce the mud-pulse generating means of continuous positive wave side feed liquor pulse, drive unit drives the magnetic force coupling device and rotates, and the magnetic force coupling device drives continuous wave pulse and the positive pulse that the mud-pulse generating means produces the High Pressure Difference amplitude;
By accompanying drawing 2 in conjunction with shown in Figure 3, described drive unit is made up of seal casinghousing 4, end cover 20, power supply 5, stepper motor 6 and speed reduction gearing that the lower end of playing airtight effect is connected with end cover 20, power supply 5, stepper motor 6 and speed reduction gearing are installed in the hermetically sealed body of being made up of seal casinghousing 4 and end cover 20, seal casinghousing 4 peripheries have fluid passage, guarantee that by fluid passage mud passes through smoothly.Seal casinghousing 4 by screw in drill collar 1.Be provided with upper supporting plate 28 and lower carrier plate 29 in the seal casinghousing 4, lower carrier plate 29 can be the part (as shown in Figure 2) of seal casinghousing 4, power supply 5 is arranged on above the upper supporting plate 28, and stepper motor 6 is arranged on above the lower carrier plate 29, and power supply 5 links to each other with stepper motor 6 by lead.Speed reduction gearing by be installed in the pinion 7 on 6 of the stepper motors, the gear wheel 21 and the bearing support of mounting teeth wheel shaft 8 upper ends formed.Bearing support is connected on the lower carrier plate 29 of stepper motor 6 one sides, gear shaft 8 is connected on the bearing support, pinion 7 is meshed with gear wheel 21, the driving cog that gear shaft 8 lower ends self have, and gear shaft 8 is meshed and outputting power by the gear 22 of driving cog with coupling axle 9 upper ends.Drive unit is to give the magnetic force coupling device by hermetic seal casinghousing 4 with the deceleration power transmission, so not only stepper motor 6 power is passed to coupling axle 9, but also has play a part to slow down and sealing, shortens this mud pulse generator length.
In conjunction with shown in Figure 4, described magnetic force coupling device includes coupling axle 9, outer magnetic bucket 11, separation sleeve 10, protective sleeve 17, magnetic patch 12 by accompanying drawing 2.Coupling axle 9 upper ends are equipped with gear 22, coupling axle 9 places in the separation sleeve 10, coupling axle 9 passes through end cover 20 and extends in the seal casinghousing 4, the gear 22 of coupling axle 9 upper ends is meshed with the driving cog of gear shaft 8, realize double reductions by driving cog and gear 22 engagements on the coupling axle 9, axially be useful in the coupling axle 9 pass through cable cross line three-way hole 26.Separation sleeve 10 is enclosed within outside the coupling axle 9 and with end cover 20 and is threaded, and separation sleeve 10 lower ends are connected with the lead seal protection joint 27 that is used to connect guardwire.Outer magnetic bucket 11 is enclosed within outside the separation sleeve 10.Magnetic patch 12 correspondences are installed in outer magnetic the bucket 11 outer and coupling axle 9 outer couplings that rise.Protective sleeve 17 is fixed on outside the outer magnetic bucket 11 and is used to protect magnetic patch 12.Separation sleeve 10 is provided with the carbide ring 18 that is used for support and connection with outer magnetic bucket 11 upper ends are corresponding, and the component movement pair.Outer magnetic bucket 11 links to each other with armature spindle 14.Described magnetic force coupling device periphery has fluid passage, guarantees that by fluid passage mud passes through smoothly.The magnetic force coupling device is given the mud-pulse generating means by outer magnetic bucket 11 sealings and coupling with power transmission.
In conjunction with shown in Figure 5, described mud-pulse generating means includes mounting flange 13, stator tube 15, armature spindle 14, Savonius rotors tube 16 compositions by accompanying drawing 2.Mounting flange 13 is admittedly in drill collar 1, and mounting flange 13 peripheries have liquid pass hole 2, studs with alloy cover 19 in the liquid pass hole 2.Stator tube 15 is fixedly connected on below the mounting flange 13, and stator tube 15 external series gaps are combined with rotor drum 16, have on the armature spindle 14 peripheral mounting flanges 13 with stator tube 15 in communicate cross liquid passage 24.Rotor drum 16 axially is connected with armature spindle 14, axially is useful on the line three-way hole 26 excessively that passes through cable in the armature spindle 14.Armature spindle 14 passes mounting flange 13 and links to each other with outer magnetic bucket 11.Armature spindle 14 is used for stator tube 15 lower ends that support and connection place are corresponding to be inlaid with alloy hoop 25, and the component movement pair, plays centralizing function.On stator tube 15 sidewalls side opening 3 is arranged, side liquid hole 23 is arranged on rotor drum 16 sidewalls, side opening 3 is corresponding with side liquid hole 23, and side liquid hole 23 can be aimed at side opening 3 at intervals in rotor drum 16 rotary courses.Drive rotor drum 16 by stepper motor 6 and rotate, stator tube 15 upper-side holes 3 are closed and are opened in the side liquid hole 23 on the rotor drum 16 at intervals, produce continuous impulse, also can produce positive pulse by control step motor 6 rotating speeds.The quantity in side opening 3 and side liquid hole 23 is 1,2 or 3.
Operating principle:
The installation site of this mud pulse generator in drill collar is identical with existing pulse generator installation site in drill collar.This mud pulse generator does not have to change the mode of existing transmission, detection and decoding.
Shown in accompanying drawing, at first this mud pulse generator is connected in the drill collar 1 by screw by seal casinghousing 4 and mounting flange 13.
In drilling process, give for stepper motor 6 by control device control power supply 5, and control step motor 6 rotating speeds, stepper motor 6 is meshed by the gear wheel 21 of pinion 7 with gear shaft 8 upper ends, and driven gear axle 8 rotates, gear shaft 8 cogs by driving cog and coupling axle 9 and 22 is meshed, and drive coupling axle 9 rotates, coupling axle 9 is coupled by heteropole magnetic patch 12 with outer magnetic bucket 11, outer magnetic bucket 11 is rotated, outer magnetic bucket 11 drives rotor drum 16 by armature spindle 14 and rotates, stator tube 15 upper-side holes 3 are closed and are opened in side liquid hole 23 on the rotor drum 16 at intervals, when side opening 3 and side liquid hole 23 are relative when just opening, one road mud can pass through liquid passage 24, side opening 3 and side liquid hole 23 flow downward, and when side opening 3 and side liquid hole 23 interlace switch when closing, mud flows downward through liquid pass hole 2 all the time, make the pressure of mud constantly change, the continuous wave pulse of High Pressure Difference amplitude.And, can work in the positive pulse mode because of the rotating speed of its enough mechanical strength and controlled stepper motor 6.
Claims (11)
1. mud pulse generator, it is installed in the drill collar (1), it is characterized in that: it comprises drive unit, magnetic force coupling device and pulse generating unit, drive unit is used for power is passed to described magnetic force coupling device; Described pulse generating unit comprises armature spindle (14), stator tube (15), the rotor drum (16) that mounting flange (13), upper end link to each other with the magnetic force coupling device; The lower end of described armature spindle (14) connects rotor drum (16) and can drive rotor drum (16) rotation; Mounting flange (13) periphery is provided with the liquid pass hole (2) that mud is provided to drill bit continuously, can make mud enter the interior liquid passage (24) excessively of stator tube (15) on the mounting flange (13) in addition, and circumferentially be evenly equipped with one or more side openings (3) on the sidewall of stator tube; When rotor drum (16) rotated, the one or more circumferentially uniform side liquid holes (23) on the rotor drum (16) can make the side opening (3) on the stator tube (15) close at intervals and open, and side opening (3) is identical with side liquid hole (23) quantity.
2. mud pulse generator according to claim 1 is characterized in that: the sidewall of described rotor drum (16) is provided with side liquid hole (23), and side liquid hole (23) can be aimed at side opening (3) at intervals in rotor drum (16) rotary course.
3. mud pulse generator according to claim 1 and 2 is characterized in that: described stator tube (15) and rotor drum (16) matched in clearance.
4. mud pulse generator according to claim 1 and 2 is characterized in that: described drive unit comprises power supply (5), stepper motor (6) and speed reduction gearing.
5. mud pulse generator according to claim 4 is characterized in that: described speed reduction gearing comprises the pinion (7) that is installed on the motor output shaft, the gear wheel (21) that is installed in gear shaft (8) upper end and meshes with pinion (7); The lower end of described gear shaft (8) has driving cog.
6. mud pulse generator according to claim 1 and 2 is characterized in that: described magnetic force coupling device comprises coupling axle (9), is enclosed within separation sleeve (10), outer magnetic bucket (11) on the coupling axle (9) regularly; Outer magnetic bucket (11) be placed in separation sleeve (10) outer and the two can relatively rotate; Outer magnetic bucket (11) and separation sleeve (10) are gone up the magnetic patch (12) that correspondence is provided with the magnetizing force coupling.
7. mud pulse generator according to claim 6 is characterized in that: described coupling axle (9) upper end is provided with the gear (22) that is meshed with the driving cog of gear shaft (8) lower end.
8. the mud pulse generator of stating according to claim 7 is characterized in that: a gear (22) the generation double reduction of described driving cog and coupling axle (9) upper end.
9. mud pulse generator according to claim 8 is characterized in that: the bottom of described outer magnetic bucket (11) is connected with armature spindle (14).
10. mud pulse generator according to claim 8 is characterized in that: have through hole in described coupling axle (9) and the armature spindle (14).
11. mud pulse generator according to claim 6 is characterized in that: described magnetic force coupling device also comprises the protective sleeve (17) that is arranged on outer magnetic bucket (11) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202999202U CN201560757U (en) | 2009-12-21 | 2009-12-21 | Mud pulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202999202U CN201560757U (en) | 2009-12-21 | 2009-12-21 | Mud pulse generator |
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| Publication Number | Publication Date |
|---|---|
| CN201560757U true CN201560757U (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202999202U Expired - Fee Related CN201560757U (en) | 2009-12-21 | 2009-12-21 | Mud pulse generator |
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| CN (1) | CN201560757U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718195B (en) * | 2009-12-21 | 2013-05-08 | 北京中联博韬科技咨询有限公司 | Slurry pulse generator |
| CN104343440A (en) * | 2014-08-29 | 2015-02-11 | 北京市普利门电子科技有限公司 | Method and system for detecting mud pressure pulse signal |
| CN105317377A (en) * | 2015-11-17 | 2016-02-10 | 中国石油大学(华东) | Center differential pressure type drill bit |
| CN109339770A (en) * | 2018-09-29 | 2019-02-15 | 中国石油大学(华东) | An oscillating shear valve stator and rotor end face structure design method and oscillating shear valve |
| CN109723434A (en) * | 2018-12-29 | 2019-05-07 | 中国科学院地质与地球物理研究所 | Drilling tool pressure pulse constant amplitude adjustment method and adjustment system |
| CN109736785A (en) * | 2018-11-21 | 2019-05-10 | 山东鼎盛精工股份有限公司 | A kind of measurement while drilling continuous wave signnal generator |
| CN112576242A (en) * | 2020-12-07 | 2021-03-30 | 北京拓尔丰科技有限公司 | Anti-interference pulse generator driving head |
| CN118933748A (en) * | 2024-10-14 | 2024-11-12 | 中国石油集团川庆钻探工程有限公司 | An adaptive pulse generator for oil drilling |
-
2009
- 2009-12-21 CN CN2009202999202U patent/CN201560757U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718195B (en) * | 2009-12-21 | 2013-05-08 | 北京中联博韬科技咨询有限公司 | Slurry pulse generator |
| CN104343440A (en) * | 2014-08-29 | 2015-02-11 | 北京市普利门电子科技有限公司 | Method and system for detecting mud pressure pulse signal |
| CN104343440B (en) * | 2014-08-29 | 2017-10-17 | 北京市普利门电子科技有限公司 | The detection method and system of mud pressure pulse signal |
| CN105317377A (en) * | 2015-11-17 | 2016-02-10 | 中国石油大学(华东) | Center differential pressure type drill bit |
| CN109339770A (en) * | 2018-09-29 | 2019-02-15 | 中国石油大学(华东) | An oscillating shear valve stator and rotor end face structure design method and oscillating shear valve |
| CN109736785A (en) * | 2018-11-21 | 2019-05-10 | 山东鼎盛精工股份有限公司 | A kind of measurement while drilling continuous wave signnal generator |
| CN109736785B (en) * | 2018-11-21 | 2019-12-20 | 山东鼎盛精工股份有限公司 | Continuous wave signal generator for measurement while drilling |
| CN109723434A (en) * | 2018-12-29 | 2019-05-07 | 中国科学院地质与地球物理研究所 | Drilling tool pressure pulse constant amplitude adjustment method and adjustment system |
| CN112576242A (en) * | 2020-12-07 | 2021-03-30 | 北京拓尔丰科技有限公司 | Anti-interference pulse generator driving head |
| CN118933748A (en) * | 2024-10-14 | 2024-11-12 | 中国石油集团川庆钻探工程有限公司 | An adaptive pulse generator for oil drilling |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jin Feng Inventor after: Wen Lei Inventor before: Jin Feng Inventor before: Wen Lei Inventor before: Chen Yuandong |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: JIN FENG WEN LEI CHEN YUANDONG TO: JIN FENG WEN LEI |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20151221 |
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| EXPY | Termination of patent right or utility model |