CN104675612A - Measurement while drilling mud generator with speed regulation function - Google Patents
Measurement while drilling mud generator with speed regulation function Download PDFInfo
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- CN104675612A CN104675612A CN201410465253.6A CN201410465253A CN104675612A CN 104675612 A CN104675612 A CN 104675612A CN 201410465253 A CN201410465253 A CN 201410465253A CN 104675612 A CN104675612 A CN 104675612A
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- generator
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- drilling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a measurement while drilling mud generator with a speed regulation function. The mud generator comprises a mud impeller, a magnetic coupling transmission device, a generator shell, a generator stator, a generator rotating shaft, a speed regulating motor stator, a speed regulating circuit and a speed measuring sensor. One end of the magnetic coupling transmission device is fixedly connected with the mud impeller while the other end is fixedly connected with the generator rotating shaft, the magnetic coupling transmission device is arranged in the generator shell, and the generator stator and the speed regulating motor stator are fixed to the inner wall of the generator shell. The input end of the speed regulating circuit is connected with the output end of the speed measuring sensor, and the rotating speed of a motor is regulated according to an induction value of the speed measuring sensor. The rotating speed of the motor is more stable, output voltage is smoother, output electric energy is higher in quality, motor efficiency is improved while service life is prolonged by the aid of the stable rotating speed, and performance of the motor is better.
Description
Technical field
The present invention relates to petroleum production and field of detecting, particularly relate to a kind of measurement while drilling band speed-regulating function slurry generator.
Background technique
Petroleum industry measurement while drilling (MWD) technology is a Main way of oilfield technology service, and through the development of nearly more than 10 years, comparative maturity abroad at present, down-hole power was the key equipment of MWD.Along with the development of drilling and production technology, the mine degree of depth of oil-gas reservoir resource, the increase of horizontal well length.MWD surveying instrument and associated mechanisms longevity of service, functional requirement is high, and measurement parameter kind is many, down-hole control mechanism subtilizedization, complicated.And then require that the underground power supply used power supply of MWD can reliably working for a long time, thus provide continual and steady electric energy for system.At present, drill rod telemetry system underground power supply used power supply mainly battery pack and turbo type alternator, is called for short slurry generator.
Battery power is in the majority with high-performance lithium battery, and compact structure is easy for installation, and data transmission is reliable, but transformation parameter is few, and temperature influence is large, and most capacity only can maintain system continuous operation and be about 200h.And along with the continuous increase of well depth, usually can reach 9000-15000m, and bottom hole temperature (BHT) constantly raises along with the increase of temperature, current shaft bottom has reached 225-250 degrees centigrade.The temperature that common batteries group can be born is 160 degrees centigrade, can not meet the demands gradually.What replacing battery caused stops brill can increase drilling cost, and easily causes seal leakage, and in addition, old and useless battery befouling environment, does not have environment protection significance.Therefore, the lithium cell as down-hole main flow power supply has been difficult to meet measurement while-drilling instrument, controlling tool and the deep drilling needs to electric power.
Summary of the invention
In view of situation about existing in prior art, according to an aspect of the present invention, measurement while drilling is provided to be with speed-regulating function slurry generator.
Measurement while drilling in the present invention band speed-regulating function slurry generator, comprises, mud impeller, magnetic force coupling gearing device, generator casing, generator unit stator, alternator shaft, speed-adjustable motor stator, alignment circuit and tachogenerator; One end of described magnetic force coupling gearing device is fixedly connected with described mud impeller, the other end is fixedly connected with described alternator shaft, be arranged in described generator casing, be flexibly connected with described generator casing, described generator casing inwall stationary power generation machine stator and speed-adjustable motor stator; Described test circuit is fixedly connected with the inner side of described generator casing, the input end of described alignment circuit is connected with the output terminal of described tachogenerator, current generator rotating speed is received from described tachogenerator, output terminal is connected with described speed-adjustable motor stator, if described current generator rotating speed is greater than setting value, then drive described speed-adjustable motor stator to be energized, produce reactive torque, make described alternator shaft reduction of speed.
In a preferred embodiment, also comprise, socket, joint and retaining ring; Described socket is connected to one end of described joint, and the other end of described joint is fixedly connected with by described retaining ring one end with described generator casing.
In a preferred embodiment, also comprise, retaining ring, described retaining ring is assemblied in the connecting end of described magnetic force coupling gearing device and described mud impeller, is arranged at the outside that described retaining ring is assemblied in described magnetic force coupling gearing device.
In a preferred embodiment, also comprise, slurry flows cylinder; Described slurry flows cylinder is fixedly connected with the outer end of described retaining ring, is set in the outside of described mud impeller.
In a preferred embodiment, also comprise, mud impeller blocking cap, described mud impeller blocking cap is connected with the end winding support of described mud impeller.
In a preferred embodiment, also comprise, dam dish seat, described in dam dish seat be fixedly connected with described retaining ring, be positioned at the outside of described mud impeller blocking cap.
In a preferred embodiment, also comprise, centralizer, described centralizer is fixedly connected with the described outside of coiling seat of damming.
In a preferred embodiment, also comprise, dam dish, described in dam dish be fixedly connected with the outside of described centralizer.
In a preferred embodiment, also comprise, filtering slurry cylinder, described filtering slurry cylinder is fixedly connected with the described outside of coiling of damming.
Pass through technique scheme, the present invention compared with prior art has the following advantages: the slurry generator of the present invention's design utilizes mud to drive turbine blade to rotate, achieve task of utilizing mud to generate electricity, worked by built-in speed-adjustable motor simultaneously, make slurry generator have speed-regulating function.Slurry generator is with circulating mud continuous operation, until mud stops.Turbine high temperature resistance high pressure anti-wear corrosion material is made, long working life, and the alternating current (a.c.) sent can be the direct current that system provides continual and steady after power electronics voltage stabilizing rectification.The built-in speed-adjustable motor of slurry generator, different according to mud flow rate, speed-adjustable motor works in different conditions, make generator speed remain at stability range, compared with existing product, this exclusive function ensure that motor speed of the present invention is more stable, output voltage is more steady, export the quality of power supply higher, stable rotating speed also improves electric efficiency and working life, and its performance is more excellent.The use of cartridge filter, enhances quality of mud fluid accommodation simultaneously.For better anti-rotation, adopt unique retaining ring structure.The use of spring pad also ensures the assembly quality of motor, and make motor be convenient to assembling, dismounting and safeguard, versatility is stronger.
Accompanying drawing explanation
Fig. 1 is first portion's structural representation of measurement while drilling smaller sized shale generator in one embodiment of the present invention;
Fig. 2 is the second portion structural representation of measurement while drilling smaller sized shale generator in one embodiment of the present invention;
Fig. 3 is the Part III structural representation of measurement while drilling smaller sized shale generator in one embodiment of the present invention;
Fig. 4 is the Part IV structural representation of measurement while drilling smaller sized shale generator in one embodiment of the present invention;
Fig. 5 is the sectional view of A-A in Fig. 4;
Fig. 6 is the retaining ring structural representation of measurement while drilling smaller sized shale generator in one embodiment of the present invention.
Reference character
1-speed-adjustable motor stator; 2-generator unit stator; 3-socket; 4-joint; 5-magnetic force coupling gearing device; 6-bearing; 7-retaining ring; 8-slurry flows cylinder; 9-mud impeller; 10-mud impeller blocking cap; 11-dams dish seat; 12-centralizer; 13-dams dish; 14-filtering slurry cylinder; 15-spring pad; 16-alignment circuit.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
Fig. 1 is the structural representation of mud turbine generator, its main constituent elements comprises speed-adjustable motor, comprises, mud impeller, magnetic force coupling gearing device, generator casing, generator unit stator, alternator shaft, speed-adjustable motor stator, alignment circuit and tachogenerator; One end of described magnetic force coupling gearing device is fixedly connected with described mud impeller, the other end is fixedly connected with described alternator shaft, be arranged in described generator casing, be flexibly connected with described generator casing, described generator casing inwall stationary power generation machine stator and speed-adjustable motor stator; Described test circuit is fixedly connected with the inner side of described generator casing, the input end of described alignment circuit is connected with the output terminal of described tachogenerator, current generator rotating speed is received from described tachogenerator, output terminal is connected with described speed-adjustable motor stator, if described current generator rotating speed is greater than setting value, then drive described speed-adjustable motor stator to be energized, produce reactive torque, make described alternator shaft reduction of speed.
In a preferred embodiment, socket is connected to one end of described joint, and the other end of joint is fixedly connected with by described retaining ring one end with described generator casing.
In a preferred embodiment, also retaining ring is fixedly connected with in the outside of magnetic force coupling gearing device.As shown in Figure 6, outside retaining ring, also connecting slurry flows cylinder successively, (slurry flows cylinder is fixedly connected with the outer end of described retaining ring, be set in the outside of described mud impeller), mud impeller blocking cap (mud impeller blocking cap is connected with the end winding support of mud impeller), damming, (the dish seat that dams is fixedly connected with described retaining ring dish seat, be positioned at the outside of mud impeller blocking cap), centralizer (centralizer is fixedly connected with the outside of coiling seat of damming), dam dish (dish that dams is fixedly connected with the outside of centralizer), filtering slurry cylinder (filtering slurry cylinder is fixedly connected with the outside of coiling of damming).
Cartridge filter cross section, circumferentially has 18 grooves vertically at it.When mud flows into from cartridge filter, by the filtration of fluting, large granular impurity is filtered, ensure the quality entering stream cylinder mud.Work when down-hole is long after a period of time, can contain more impurity in mud, the use of cartridge filter can guarantee that impurity does not enter runner, avoid itself and mud impeller to collide and impact, make to rotate smoothly, improve mud impeller life, thus improve the operating life of slurry generator.Cartridge filter is coiled housing and is connected by screw thread with damming, and for avoiding mud to enter destruction screw thread, adopts Cock screw anti-rotation, as shown in Figure 5 in joint.
To adopt back-up ring to fix mud impeller different from Conventional mud generator, and the present invention adopts unique stopper structure to fix mud impeller.After mud impeller is in place, by tightening plug, prevent mud impeller axial float.Compared with back-up ring, the cleanliness of plug is better, and its flow resistance is less, also less on the impact of runner.Simultaneously plug installation, dismantle more convenient, effectively can improve the assembly performance of product.
Underground survey works, and when mud flow rate is excessive, generator speed is too high, affect motor working life, output voltage is higher simultaneously, is also unfavorable for that rear end measuring device normally uses, reliably working when therefore requiring that slurry generator is long, its output voltage also will remain on stability range.This patent realizes this function by built-in speed-adjustable motor, when generator speed exceed stabilized (steady-state) speed is set time, alignment circuit controls speed-adjustable motor band and carries work, export retarding torque, consume the energy that magnetic force coupling gearing device transmits, make generator speed remain on stability range, ensure normal power supply demand, improve life of product.
As shown in Figure 4, there are 4 uniform extension keies its one end to retaining ring graphics, and the other end has skim, for anti-rotation between two adjacent housings that are threaded.During installation, first extension key is inserted in enclosure slot, after screw thread is in place, by the mounting groove of position corresponding for the press-in of the other end thin layer, thus play anti-rotation effect.
As shown in Figure 5, there are 4 even grooves its one end to spring pad graphics, by frock insertion groove during installation, rotates adjustment spring pad position, ensures that each part is in place.
Working principle is as follows: mud is after filter cylinder filters, flow into along catch tray through flow hole, impact slurry turbine, magnetic couple device is driven to rotate, thus drive drive axis, generator and speed-adjustable motor are rotated, and the Ac of generation is after over commutation, export with DC form, realize system power supply.When rotating speed is higher than setting stabilized (steady-state) speed, alignment circuit sends instruction, speed-adjustable motor run with load, and consumed energy makes rotating speed drop to stability range.
Feature of the present invention is: the invention provides a kind of slurry generator for powering for measurement-while-drilling system, by the use of speed-adjustable motor and alignment circuit, possesses speed-regulating function.By the use of cartridge filter, avoid the inflow of large particle mud impurity.By the use of retaining ring, play anti-rotation effect, ensure that the reliability of each connection part.By the use of spring pad, each part is in place, ensures slurry generator assembly quality and manufacturability
Based on above design, slurry generator long-term work, in stabilized (steady-state) speed scope, improves electric efficiency, reduces the loss of electric machine, has stronger adaptive capacity for down-hole hot environment.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to the protection domain of invention.
Claims (9)
1. measurement while drilling band speed-regulating function slurry generator, is characterized in that, comprise, mud impeller, magnetic force coupling gearing device, generator casing, generator unit stator, alternator shaft, speed-adjustable motor stator, alignment circuit and tachogenerator; One end of described magnetic force coupling gearing device is fixedly connected with described mud impeller, the other end is fixedly connected with described alternator shaft, be arranged in described generator casing, be flexibly connected with described generator casing, described generator casing inwall stationary power generation machine stator and speed-adjustable motor stator; Described test circuit is fixedly connected with the inner side of described generator casing, the input end of described alignment circuit is connected with the output terminal of described tachogenerator, current generator rotating speed is received from described tachogenerator, output terminal is connected with described speed-adjustable motor stator, if described current generator rotating speed is greater than setting value, then drive described speed-adjustable motor stator to be energized, produce reactive torque, make described alternator shaft reduction of speed.
2. measurement while drilling band speed-regulating function slurry generator according to claim 1, is characterized in that, also comprise, socket, joint and retaining ring; Described socket is connected to one end of described joint, and the other end of described joint is fixedly connected with by described retaining ring one end with described generator casing.
3. measurement while drilling band speed-regulating function slurry generator according to claim 1, it is characterized in that, also comprise, retaining ring, described retaining ring is assemblied in the connecting end of described magnetic force coupling gearing device and described mud impeller, is arranged at the outside that described retaining ring is assemblied in described magnetic force coupling gearing device.
4. measurement while drilling band speed-regulating function slurry generator according to claim 3, is characterized in that, also comprise, slurry flows cylinder; Described slurry flows cylinder is fixedly connected with the outer end of described retaining ring, is set in the outside of described mud impeller.
5. the band speed-regulating function slurry generator of the measurement while drilling according to claim 3 or 4, it is characterized in that, also comprise, mud impeller blocking cap, described mud impeller blocking cap is connected with the end winding support of described mud impeller.
6. measurement while drilling according to claim 5 band speed-regulating function slurry generator, it is characterized in that, also comprise, dam dish seat, described in the dish seat that dams be fixedly connected with described retaining ring, be positioned at the outside of described mud impeller blocking cap.
7. measurement while drilling band speed-regulating function slurry generator according to claim 6, it is characterized in that, also comprise, centralizer, described centralizer is fixedly connected with the described outside of coiling seat of damming.
8. measurement while drilling according to claim 7 band speed-regulating function slurry generator, it is characterized in that, also comprise, dam dish, described in dam to coil and be fixedly connected with the outside of described centralizer.
9. measurement while drilling band speed-regulating function slurry generator according to claim 8, it is characterized in that, also comprise, filtering slurry cylinder, described filtering slurry cylinder is fixedly connected with the described outside of coiling of damming.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410465253.6A CN104675612B (en) | 2014-09-12 | 2014-09-12 | Measurement while drilling band speed-regulating function slurry generator |
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| CN201410465253.6A CN104675612B (en) | 2014-09-12 | 2014-09-12 | Measurement while drilling band speed-regulating function slurry generator |
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| CN104675612B CN104675612B (en) | 2017-09-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098841A (en) * | 2020-11-23 | 2020-12-18 | 东营千禧龙科工贸有限公司 | Current testing device for mud generator of while-drilling instrument |
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| WO1981001444A1 (en) * | 1979-11-14 | 1981-05-28 | Allmaenna Ingbyran | Windmill transmission and control systems |
| CN2924052Y (en) * | 2006-06-22 | 2007-07-18 | 中国石化集团胜利石油管理局钻井工艺研究院 | Under ground slurry generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112098841A (en) * | 2020-11-23 | 2020-12-18 | 东营千禧龙科工贸有限公司 | Current testing device for mud generator of while-drilling instrument |
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