CN203584421U - Motor type mud pulse generator - Google Patents
Motor type mud pulse generator Download PDFInfo
- Publication number
- CN203584421U CN203584421U CN201320667902.1U CN201320667902U CN203584421U CN 203584421 U CN203584421 U CN 203584421U CN 201320667902 U CN201320667902 U CN 201320667902U CN 203584421 U CN203584421 U CN 203584421U
- Authority
- CN
- China
- Prior art keywords
- pulse generator
- mud pulse
- pressure balance
- lower component
- motor type
- 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.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 230000006835 compression Effects 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 23
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 239000010720 hydraulic oil Substances 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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Abstract
The utility model discloses a motor type mud pulse generator which comprises a power and transmission device at the top, a pressure balance module in the middle and a lower assembly at the bottom, wherein the lower assembly is connected with a current-limiting ring and a main valve head; the power and transmission device comprises a driver module, a motor assembly, an elastic shaft coupler, a ball screw, a spring and a transmission shaft; the pressure balance module comprises a pressure balance film, a pressure-resisting barrel, a pilot valve and a corresponding rod piece; the lower assembly comprises a piston, a spring and a pressure-resisting barrel. The mud pulse generator has the advantages of simple structure, reliability for working, power saving, suitability for a wireless measurement-while-drilling system, capability of solving the problems of high fault rate and high power consumption of a measurement-while-drilling instrument and the like.
Description
Technical field
The utility model relates to a kind of petroleum drilling engineering machinery, especially a kind of for wireless drilling measuring impulse generator.
Background technology
In Process of Oil Well Drilling, especially, in the drilling process of the complex structural well such as horizontal well, extended reach well and Multilateral Wells, well site personnel need the various downhole parameters of understanding in real time to be completed by measurement while drilling MWD, well logging during LWD system.
Oil drilling cost is expensive, to the reliability of downhole instrument and energy-conservation having relatively high expectations.Two apparent problems are: the pulser structure that the working condition of shaft bottom complex and part are numerous and diverse, makes the high reliability that guarantees measurement while-drilling instrument become extravagant hope; Shaft bottom volume of transmitted data is inevitably increasing, can only pass through more energy-conservation measure, and could reduce makes a trip changes the number of times of battery.
At present, the information transferring method of measurement while drilling mainly contains four kinds: wire cable method, mud-pulse method, sonic method and Electromagnetic Wave Method, every kind of mode has its limitation and the scope of application, wherein with mud-pulse method, is most widely used, reliably.Mud-pulse method is divided into again negative pulse, positive pulse and three kinds of transmission means of continuous wave, current most widely used positive pulse transmission means.
The transmission means of mud-pulse has determined the form of structure of pulser, wherein, with the reciprocating signal generator of hydraulic-driven of pilot control, is the most general form of mud positive pulse transmission means.Traditional form of structure drives primary throttle valve to move back and forth to produce pressure pulse signal by hydraulic control circuit, and the medium of hydraulic control circuit can be that drilling fluid can be also hydraulic oil.Mostly pilot valve action be to be completed by electromagnet, and power consumption is large, and fault rate is high.
Mud pulse generator is the most important thing of most of MWD and LWD instrument, promotes the performance of slurry pulsator, makes it accomplish simple in structure, easy to maintenance, energy-saving durable, is the inexorable trend of Instrument Development.
Utility model content
The purpose of this utility model is to provide a kind of electric motor type mud pulse generator.
The technical solution of the utility model is: a kind of electric motor type mud pulse generator, comprise power and transmission device, pressure balance module and lower component, power and transmission device are at top, and pressure balance module is in centre, lower component is in bottom, and lower component is connected with restrictor ring and main valve head; Power and transmission device are comprised of Drive Module, motor assembly, yielding coupling, ball-screw, spring and power transmission shaft; Pressure balance module is comprised of pressure balance film, resistance to compression cylinder, pilot valve and corresponding rod member; Lower component is comprised of piston, spring and resistance to compression cylinder.
Described motor assembly output shaft, by yielding coupling, is connected with ball-screw, and ball-screw is immersed in hydraulic oil completely.
Described motor assembly, yielding coupling, pilot valve main shaft are immersed in hydraulic oil, and with the oil pocket of ball-screw be UNICOM.
The spring of described lower component is in compressive state under nature, and piston is hollow rods, connects the cavity at two ends.
The resistance to compression cylinder of described pressure balance module has the hole that mud enters.
Arc keyway is arranged at the resistance to compression cylinder bottom of described lower component.
Hydraulic oil is filled with in described pressure balance film inside.
Described restrictor ring is positioned in non magnetic drill collar, and the relative position of the resistance to compression cylinder of itself and lower component is fixed.
Ball-screw changes the rotation of motor into rectilinear motion, and main shaft drives pilot valve action, and mud enters lower component by respective channel, promote piston movement, the valve head of piston rod front end is blocked restrictor ring, causes mud pressure in drill collar to raise, thereby produces positive pulse mud pressure signal.
The beneficial effect the utlity model has is: simple in structure, reliable operation, saves electric weight, is applicable to wireless drilling measuring system, solves the problem that measurement while-drilling instrument fault rate is high and power consumption is large.Mechanical wear is less, under its rational application life, can realize non-maintaining.Promoted greatly the anti-pressure ability of resistance to compression cylinder.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure 1, restrictor ring; 2, main valve head; 3, piston; 4, spring; 5, resistance to compression cylinder; 6, pilot valve; 7, resistance to compression cylinder; 8, resistance to compression cylinder; 9, pressure balance film; 10, power transmission shaft; 11, spring; 12, ball-screw; 13, yielding coupling; 14, motor assembly; 16, Drive Module.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
An electric motor type mud pulse generator, comprises power and transmission device, pressure balance module and lower component, and power and transmission device are at top, and pressure balance module is in centre, and lower component is in bottom, and lower component is connected with restrictor ring 1 and main valve head 2; Power and transmission device are comprised of Drive Module 16, motor assembly 14, yielding coupling 13, ball-screw 12, spring 11 and power transmission shaft 10; Pressure balance module is comprised of pressure balance film 9, resistance to compression cylinder 8 and 7, pilot valve 6 and corresponding rod member; Lower component is comprised of piston 3, spring 4 and resistance to compression cylinder 5.
Described motor assembly output shaft, by yielding coupling 13, is connected with ball-screw 12, and ball-screw 12 is immersed in hydraulic oil completely.
Described motor and reduction box, yielding coupling 13, pilot valve 6 main shafts are immersed in hydraulic oil, and with the oil pocket of ball-screw 12 are UNICOMs.
The spring 4 of described lower component is in compressive state under nature, and piston 3 is hollow rods, connects the cavity at two ends.
The resistance to compression cylinder 8 of described pressure balance module has the hole that mud enters.
Arc keyway is arranged at resistance to compression cylinder 5 bottoms of described lower component.
Hydraulic oil is filled with in described pressure balance film 9 inside.
Described restrictor ring 1 is positioned in non magnetic drill collar, and the relative position of the resistance to compression cylinder 5 of itself and lower component is fixed.
As shown in Figure 1, when instrument is normally worked in shaft bottom, because resistance to compression cylinder 5 Section Space is around greater than the interface shape of restrictor ring 1 and main valve head 2, the mud pressure at resistance to compression cylinder 5 places will be lower than the pressure of main valve head 2 bottoms, and piston 3 up moves under the effect of pressure reduction, Compress Spring 4, mud in lower component cavity flows out by piston 3 hollows, after spring 4 is compressed to a certain degree, main valve head 2 is lifted from restrictor ring 1, and piston 3 is in equilibrium state.Driver module 16 is controlled motor assembly 14 work, ball-screw 12 changes the rotation of motor assembly 14 into rectilinear motion, power transmission shaft 10 drives pilot valve 6 actions, mud enters the cavity of lower component by the hole of resistance to compression cylinder 7, and by the hollow of piston 3, flow into main valve head 2 bottoms, piston 3 pressure at two ends balances, piston 3 moves downward under the effect of spring 4 elastic force, main valve head 2 is blocked restrictor ring 1, piston 3 reaches again a kind of equilibrium state, Section Space between main valve head 2 and restrictor ring 1 is less than resistance to compression cylinder 5 Section Space around, cause mud pressure in drill collar to raise.Keep after certain hour, driver module 16 is controlled motor assembly 14 reverse operations, ball-screw 12 changes the rotation of motor assembly 14 into rectilinear motion, power transmission shaft 10 drives pilot valve 6 actions, block lower component cavity, main valve head 2 is lifted from restrictor ring 1, completes a circulation, thereby produces positive pulse mud pressure signal.
Claims (8)
1. an electric motor type mud pulse generator, comprise power and transmission device, pressure balance module and lower component, it is characterized by: power and transmission device are at top, and pressure balance module is in centre, lower component is in bottom, and lower component is connected with restrictor ring and main valve head; Power and transmission device are comprised of Drive Module, motor assembly, yielding coupling, ball-screw, spring and power transmission shaft; Pressure balance module is comprised of pressure balance film, resistance to compression cylinder, pilot valve and corresponding rod member; Lower component is comprised of piston, spring and resistance to compression cylinder.
2. a kind of electric motor type mud pulse generator according to claim 1, is characterized by: motor assembly output shaft, by yielding coupling, is connected with ball-screw, and ball-screw is immersed in hydraulic oil completely.
3. a kind of electric motor type mud pulse generator according to claim 1, is characterized by: motor assembly, yielding coupling, pilot valve main shaft are immersed in hydraulic oil, and with the oil pocket of ball-screw be UNICOM.
4. a kind of electric motor type mud pulse generator according to claim 1, is characterized by: the spring of lower component is in compressive state under nature, and piston is hollow rods, connects the cavity at two ends.
5. a kind of electric motor type mud pulse generator according to claim 1, is characterized by: the resistance to compression cylinder of pressure balance module has the hole that mud enters.
6. a kind of electric motor type mud pulse generator according to claim 1, is characterized by: arc keyway is arranged at the resistance to compression cylinder bottom of lower component.
7. a kind of electric motor type mud pulse generator according to claim 1, is characterized by: hydraulic oil is filled with in pressure balance film inside.
8. a kind of electric motor type mud pulse generator according to claim 1, is characterized by: restrictor ring is positioned in non magnetic drill collar, and the relative position of the resistance to compression cylinder of itself and lower component is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320667902.1U CN203584421U (en) | 2013-10-29 | 2013-10-29 | Motor type mud pulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320667902.1U CN203584421U (en) | 2013-10-29 | 2013-10-29 | Motor type mud pulse generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203584421U true CN203584421U (en) | 2014-05-07 |
Family
ID=50582357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320667902.1U Expired - Lifetime CN203584421U (en) | 2013-10-29 | 2013-10-29 | Motor type mud pulse generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203584421U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593421A (en) * | 2016-12-15 | 2017-04-26 | 中国科学院地质与地球物理研究所 | High temperature resistance underground information uploading device |
| CN106640059A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Continuous wave positive pulse generator driven by linear motor |
| CN112554874A (en) * | 2020-12-25 | 2021-03-26 | 奥瑞拓能源科技股份有限公司 | Direct-drive type pulser |
| CN112593929A (en) * | 2020-12-16 | 2021-04-02 | 成都多贝石油工程技术有限公司 | Motor type mud pulse generator |
-
2013
- 2013-10-29 CN CN201320667902.1U patent/CN203584421U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640059A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Continuous wave positive pulse generator driven by linear motor |
| CN106593421A (en) * | 2016-12-15 | 2017-04-26 | 中国科学院地质与地球物理研究所 | High temperature resistance underground information uploading device |
| CN112593929A (en) * | 2020-12-16 | 2021-04-02 | 成都多贝石油工程技术有限公司 | Motor type mud pulse generator |
| CN112554874A (en) * | 2020-12-25 | 2021-03-26 | 奥瑞拓能源科技股份有限公司 | Direct-drive type pulser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
|
| CX01 | Expiry of patent term |