CN103670380A - Down-hole slurry pulse signal generation device - Google Patents
Down-hole slurry pulse signal generation device Download PDFInfo
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- CN103670380A CN103670380A CN201310697658.8A CN201310697658A CN103670380A CN 103670380 A CN103670380 A CN 103670380A CN 201310697658 A CN201310697658 A CN 201310697658A CN 103670380 A CN103670380 A CN 103670380A
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- 239000002002 slurry Substances 0.000 title claims abstract description 35
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 title abstract 4
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 14
- 238000005553 drilling Methods 0.000 abstract description 12
- 238000004891 communication Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The invention provides a down-hole slurry pulse signal generation device. The down-hole slurry pulse signal generation device comprises a plurality of driving valves and a plurality of communication systems corresponding to the driving valves in a one-to-one mode. Due to the arrangement of the multiple driving valves, the types of generated data signals while drilling is more; due to the arrangement of the independent communication systems, the overall transmission speed can be effectively guaranteed, and the precision of detection is guaranteed to a certain extent. In addition, in combination with multiple modulation modes, the data transmission rate is further increased. The signals can be controlled to be strong or weak through selection of the outer diameter of each driving valve and the inner diameter of a limiting base so that the transmitting speed of the data signals while drilling can be guaranteed, the downhole slurry pulse signal generation device can be suitable for working environments with different wells, different displacements and different well depths, and therefore the adaptability to the various environments is greatly improved; the number of working driving valves can be controlled, and therefore high flexibility is obtained.
Description
Technical field
The invention belongs to phospecting apparatus field, down-hole, relate to a kind of mud pulse generator, specifically a kind of generation device of down-hole slurry pulse signal.
Background technology
In recent years, development along with the drilling technology of oil, natural gas, coal gas and geological prospecting, MWD (MeasureWhileDrilling, measurement while drilling), the application of wireless drilling instrument on market such as LWD (LoggingWhileDrilling, with bore well logging) is more and more extensive.Impulse generator is the most important ingredient of wireless drilling measuring system, mainly by the wave transmission signal of mud.The basic principle of mud-pulse transmission is that the signal that measures of downhole sensor is encoded, Drive and Control Circuit by impulse generator, drive the work such as cone valve, rotary valve or rotor of mud pulse generator, the generation effect of damming, thereby generation mud-pressure pulses, the mud of pressure pulse in drill string is delivered to ground, the pressure sensor that ground column is installed receives pressure pulse signal, after filtering after shaping, decode system by ground is decoded, thus obtain that down-hole transmits up with boring data-signal.
At present mud-pulse transmission means is mainly three kinds of negative pulse, positive pulse and continuous wave pulses.The operating principle of mud negative pulse generator as shown in Figure 1, by opening an eduction valve, can make mud in the drill string discharge orifice on eduction valve and drill collar to bore hole annulus, thereby cause that the mud pressure of drill string inside reduces, be negative pulse signal thereby can obtain numerical value.But because needs are offered discharge orifice on drill collar, easily drill string is caused damage, more intense to the erosion effect of component, and transmission speed also cannot meet present demand, has been fade-in declining trend.
The operating principle of mud positive pulse generator as shown in Figure 2, by the relative position of needle-valve and aperture in change mud positive pulse generator, along with the continuous change of the position of needle-valve, can change the sectional area of runner, thereby cause the rising of the mud pressure of drill string inside, then can obtain numerical value is positive pulse signal.But be that its transmission of negative pulse generator or positive pulse generator is all slow with the speed of boring data-signal, cannot meet existing in industry to the demand with boring the transmission speed of data-signal.
Continuous wave impulse generator as shown in Figure 3, its operating principle is mainly that rotor produces rotation under the effect of mud, stator at the installation of the top of rotor and the equal blade quantity of rotor, the corresponding variation of the overflowing end face of rotor and the overflowing end face of stator when rotated and produce continuous sine pressure wave, and pass to ground receiving wastewater facility.The signal of continuous wave is more intense, easily receives, and inbound pacing is very fast.But because pressure value all the time all can change, will produce a plurality of continuous pressure values, and existing correlation technique is perfect not enough, is easily subject to the impact of noise, its accuracy with boring data-signal receiving is just difficult to guarantee, causes overall precision inadequate.
Summary of the invention
For this reason, technical problem to be solved by this invention is that in prior art, pressure signal transmission speed is slow, and precision is not high, thereby proposes a kind of generating means of the pulse signal of down-hole slurry fast and accurately.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A generation device for down-hole slurry pulse signal, comprises shell and is arranged on the impulse generator of described enclosure, wherein said impulse generator comprises
A plurality of driving valves, drive valve built-in sensors described in each, and the move distance signal of the mud pressure detecting number and valve is passed to control system;
Drive rod, is connected one by one with described driving valve, controls moving up and down of described driving valve;
Restraint seat, is arranged on described driver's valve outer side of door, matches with described driving valve size, shape, by two described restraint seats, limits the area size that described driving valve moves;
A plurality of slurry channels, by the open and close of slurry channel described in the laminating extent control of described driving valve and described restraint seat.
Described driving valve quantity is 4 further.
Described driving valve can be used in a plurality of merging further, reduces the quantity of described slurry channel.
Described sensor is pressure and range sensor further.
Described driving valve is subject to mud active area to be greater than described restraint seat and is subject to mud active area further.
Described driving valve is subject to mud active area to be less than described restraint seat and is subject to mud active area further.
Described restraint seat limits the area size that described driving valve moves up further.
Described restraint seat limits the area size that described driving valve moves down further.
Described drive rod is provided with the displacement detector that advances size for detection of described drive rod further.
Described displacement detector adopts resistance measurement mode or adopts electromagnetic position to trigger metering system further.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) generation device of a kind of down-hole slurry pulse signal of the present invention, comprises a plurality of driving valves, and described driving valve built-in sensors, is delivered to control system by the displacement signal of the mud pressure detecting and signal and drive rod.The setting of a plurality of driving valves, make the kind of the mud pulse signal that produces more, rather than single only having " 0 " and " 1 " or only have " 0 " and " 1 " this two states and due to the independently existence of communication system, not only can effectively guarantee whole transmission speed, also make the precision detecting have certain guarantee.Simultaneously can be in conjunction with as QPSK, QAM, the Different Modulations such as OFDM, further improve message transmission rate.
(2) a kind of down-hole slurry pulse of the present invention is with the generating means that bores signal, can control the quantity that drives valve working, in the situation that drilling well is more shallow, can suitably reduce to drive the quantity of valve or merge to use and drive valve, in the situation that drilling well is darker, can suitably increase the quantity that drives valve, there is very large flexibility.
(3) a kind of down-hole slurry pulse of the present invention is with the generating means that bores signal, mud actual internal area between driving valve and restraint seat is determining the power of signal, can drive the external diameter of valve and the internal diameter size of restraint seat to come control signal strong and weak by selection, not only can guarantee the various speed with boring data-signal transmission, can also make it to be applicable to the working environment of different wells, different displacements, different well depths, greatly promote all-environment adaptive capacity.Meanwhile, also can change folding degree and the folding phase place of each valve, reach various conventional communication modes, such as QPSK, QAM and OFDM etc.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, according to concrete invention of the present invention also by reference to the accompanying drawings, the present invention is further detailed explanation, wherein below
Fig. 1 is the fundamental diagram of negative pulse generator;
Fig. 2 is the fundamental diagram of positive pulse generator;
Fig. 3 is the fundamental diagram of continuous wave impulse generator;
Fig. 4 is the generating means structure chart of a kind of down-hole slurry pulse signal of the present invention;
Fig. 5 is four a kind of down-hole slurry pulse signal waveform figure that drive valve to produce;
Fig. 6 is the generating means structure chart of another kind of down-hole slurry pulse signal of the present invention.
In figure, Reference numeral is expressed as: 1-drives valve, 2-drive rod, 3-restraint seat, 4-slurry channel.
The specific embodiment
Below in conjunction with accompanying drawing, this is specifically addressed inventing the generation device of described a kind of down-hole slurry pulse signal.
A generating means for mud pulse signal, as shown in Figure 4, comprises shell and is arranged on the impulse generator of described enclosure, and wherein said impulse generator comprises:
A plurality of driving valves 1, drive valve 1 built-in sensors described in each, and the position signalling of the mud pressure detecting and valve is passed to control system;
Restraint seat 3, is arranged on described driving valve 1 outside, matches with described driving valve 1 size, shape, and the area size moving by two described driving valves 1 of described restraint seat 3 restriction;
A plurality of slurry channels 4, by the open and close of slurry channel 4 described in the laminating extent control of described driving valve 1 and described restraint seat 3.
The present invention is the improvement of carrying out on the basis of positive pulse generator, its operating principle is that wireless drilling downhole tool encodes command parameter according to specific mode, produce pulse signal, this pulse signal is controlled described drive rod 2 and is driven described driving valve 1 to move up and down, the strength of recycling mud makes to drive valve 1 to produce synchronous moving up and down, and has so just changed and has driven the mud actual internal area between valve 1 and restraint seat 3.Drive valve 1 away from shown in during restraint seat 3, mud can more successfully pass through from current limliting seat; When described driving valve 1 approaches described restraint seat 3, mud actual internal area reduces, thereby in drilling rod, has produced a positive mud-pressure pulses.The pulse signal of described drive rod controlling drive valve 1 away from or approach displacement and the time of described restraint seat 3, thereby controlled width and the interval of pulse.
The quantity of described driving valve 1 can be 2,3 or 4 and even more, and the precision of the different geological environment of the selective basis of its quantity, different exploring equipment requires and selects voluntarily.Wherein driving valve 1 correspondence described in each independently control command.The setting of a plurality of driving valves 1, the kind with boring data-signal that makes to detect is more, rather than single only having " 0 " and " 1 " or only have " 0 " and " 1 " this two states.Following table is for the quantity of driving valve and with the corresponding relation that bores the kind of data-signal.
| Valve |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| |
2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
In conjunction with upper table and Fig. 5, we can see that, when existing one to drive valve 1, the described kind with boring data-signal is 2, i.e. " 0 " and " 1 "; When existing two to drive valve 1, the described kind with boring data-signal is 3, i.e. " 0 ", " 1 " and " 2 ".Fig. 5 is the corresponding a kind of possible oscillogram with boring data-signal when having four to drive valve 1.Draw analogous conclusions, the quantity of described driving valve 1 is more, and the kind with boring data-signal of acquisition is also just more, not only can effectively guarantee whole transmission speed, also makes the precision detecting have certain guarantee.
Simultaneously can be in conjunction with as QPSK(QPSK), QAM(quadrature amplitude modulation), OFDM(OFDM) etc. Different Modulations, significantly improve message transmission rate.Due to described QPSK, QAM, the Different Modulations such as OFDM are technological means conventional in prior art, and those skilled in the art should know, and are not describing in detail herein.
The requirement to precision for most geological environments and existing exploring equipment, in general drives the quantity of valve 1 to be arranged on ten and just can meet existing demand with interior even number.Driving valve 1 quantity of the present invention is preferably 4.Those skilled in the art should know, and the described preferred quantity of driving valve 1 is intended to, for those skilled in the art can fully implement the present invention, be not intended to limit the present invention, and other apparent number change are also within protection scope of the present invention.
Preferably described driving valve 1 can be used in a plurality of merging, reduces the quantity of described slurry channel 4.It is a plurality of ought arranging and drive the quantity of valve 1, and while not needing so high precision during actual use, can select two or more merging that drive valves 1 to use.As when as described in the quantity of driving valve 1 be 8, but while not needing so high precision during actual use, two described driving valves 1 that can be connected merge and use, and have played the effect of same four described driving valves 1.Be about to a plurality of valves 1 and regard integral body acquisition data as, use more flexible.Can control according to actual needs the quantity that drives valve 1 work, in the situation that drilling well is more shallow, can suitably reduce to drive the quantity of valve or merge to use and drive valve, in the situation that drilling well is darker, can suitably increase the quantity that drives valve, there is very large flexibility.
The built-in sensor of described driving valve 1 is pressure and range sensor.But those skilled in the art should know, described sensor includes but not limited to pressure and range sensor, and other carry out simple sensor increase or replace also within protection scope of the present invention because of the demand detecting.
Below in conjunction with Fig. 4 and Fig. 6, to described driving valve 1, be subject to mud active area to be greater than or less than that described restraint seat 3 is subject to mud active area and the described driving valve 1 of described restraint seat 3 restriction upwards or the situation of the area size moving down describes.
Described driving valve 1 is subject to mud active area and described restraint seat 3 to be subject to the relation between mud active area to set and need to set in conjunction with actual conditions.Wider when the data area that needs detect, in general need described driving valve 1 to be subject to mud active area larger, otherwise be that described driving valve 1 is subject to mud active area smaller.Fig. 4 is that described driving valve 1 is subject to mud active area to be greater than described restraint seat 3 to be subject to mud active area, and Fig. 6 is that described driving valve 1 is subject to mud active area to be less than described restraint seat 3 to be subject to mud active area.Mud actual internal area between driving valve 1 and restraint seat 3 is determining the power of signal, can drive the external diameter of valve 1 and the internal diameter size of restraint seat 3 to come control signal strong and weak by selection, not only can guarantee the various speed with boring data-signal transmission, can also make it to be applicable to the working environment of different wells, different displacements, different well depths, greatly promote all-environment adaptive capacity.
Described restraint seat shown in Fig. 4 limits the area size that described driving valve 1 moves up.Owing to driving the end face width of valve 1 to be less than the width between restraint seat 3 shown in two, so when described driving valve 1 is under the effect of described drive rod 2, while moving up, can only arrive at most the position of described restraint seat 3.Fig. 6 is a kind of distortion that Fig. 4 is carried out, the area size that the described driving valve 1 of described restraint seat 3 restriction moves down.The shape of both driving valves 1 all adopts trapezium structure; be preferred embodiment a kind of; those skilled in the art should know, and the present invention does not limit the shape of described driving valve 1, and other apparent change in shape are all within protection scope of the present invention.
Described drive rod 2 is provided with the displacement detector that advances size for detection of described drive rod 2.Described displacement detector detects described drive rod 2, when described drive rod 2 being detected and advance size not in place, controls described drive rod 2 and adds high thrust, can accurately put in place, guarantees that the displacement of its each action can be accurate to position.Described displacement detector adopts resistance measurement mode or adopts electromagnetic position to trigger metering system.Include but not limited to this two kinds of metering systems, those skilled in the art should know, and other apparent metering systems are also within protection scope of the present invention.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And the apparent variation of being extended out thus or change are still among the protection domain in the invention.
Claims (10)
1. a generation device for down-hole slurry pulse signal, is characterized in that: comprise shell and be arranged on the impulse generator of described enclosure, wherein said impulse generator comprises
A plurality of driving valves, drive valve built-in sensors described in each, and the move distance signal of the mud pressure detecting number and valve is passed to control system;
Drive rod, is connected one by one with described driving valve, controls moving up and down of described driving valve;
Restraint seat, is arranged on described driver's valve outer side of door, matches with described driving valve size, shape, by two described restraint seats, limits the area size that described driving valve moves;
A plurality of slurry channels, by the open and close of slurry channel described in the laminating extent control of described driving valve and described restraint seat.
2. the generation device of down-hole slurry pulse signal according to claim 1, is characterized in that, described driving valve quantity is 4.
3. the generation device of down-hole slurry pulse signal according to claim 1, is characterized in that, described driving valve can be used in a plurality of merging, reduces the quantity of described slurry channel.
4. according to the generation device of the arbitrary described down-hole slurry pulse signal of claim 1-3, it is characterized in that, described sensor is pressure and range sensor.
5. according to the generation device of the arbitrary described down-hole slurry pulse signal of claim 1-4, it is characterized in that, described driving valve is subject to mud active area to be greater than described restraint seat and is subject to mud active area.
6. according to the generation device of the arbitrary described down-hole slurry pulse signal of claim 1-4, it is characterized in that, described driving valve is subject to mud active area to be less than described restraint seat and is subject to mud active area.
7. according to the generation device of the arbitrary described down-hole slurry pulse signal of claim 1-6, it is characterized in that, described restraint seat limits the area size that described driving valve moves up.
8. according to the generation device of the arbitrary described down-hole slurry pulse signal of claim 1-6, it is characterized in that, described restraint seat limits the area size that described driving valve moves down.
9. according to the generation device of the arbitrary described down-hole slurry pulse signal of claim 1-8, it is characterized in that, described drive rod is provided with the displacement detector that advances size for detection of described drive rod.
10. according to the generation device of the arbitrary described down-hole slurry pulse signal of claim 1-9, it is characterized in that, described displacement detector adopts resistance measurement mode or adopts electromagnetic position to trigger metering system.
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Cited By (11)
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| CN105675053A (en) * | 2016-01-21 | 2016-06-15 | 中国石油大学(北京) | Simulated tester for valve port characteristic, generating continuous waves, of signal generator |
| CN106850477A (en) * | 2017-02-08 | 2017-06-13 | 中国海洋石油总公司 | A kind of underground signal modulator approach and device |
| 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 |
| CN110500087A (en) * | 2019-08-28 | 2019-11-26 | 中国石油集团川庆钻探工程有限公司 | Signal transmission method based on mud pulse pressure amplitude |
| CN110761776A (en) * | 2018-07-09 | 2020-02-07 | 航天科工惯性技术有限公司 | Flow monitoring system, method and rotary valve mud pulse generator |
| CN111535802A (en) * | 2020-05-08 | 2020-08-14 | 中国石油大学(华东) | Mud pulse signal processing method |
| 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 |
| CN114060012A (en) * | 2022-01-18 | 2022-02-18 | 中国石油大学胜利学院 | A mud pulse signal detection device |
| CN114995207A (en) * | 2021-03-02 | 2022-09-02 | 中国石油化工股份有限公司 | An underground motor control system |
| CN118774761A (en) * | 2024-09-10 | 2024-10-15 | 德州联合石油科技股份有限公司 | Mud pulse signal encoding method and device for near-bit geological steering system |
| CN118933746A (en) * | 2024-10-14 | 2024-11-12 | 中国石油集团川庆钻探工程有限公司 | A mud continuous wave measurement while drilling control system and method |
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| CN105675053B (en) * | 2016-01-21 | 2018-03-13 | 中国石油大学(北京) | One kind produces continuous wave signnal generator valve port characteristic simulation test device |
| CN105675053A (en) * | 2016-01-21 | 2016-06-15 | 中国石油大学(北京) | Simulated tester for valve port characteristic, generating continuous waves, of signal generator |
| CN106850477B (en) * | 2017-02-08 | 2019-12-03 | 中国海洋石油集团有限公司 | A kind of underground signal modulator approach and device |
| CN106850477A (en) * | 2017-02-08 | 2017-06-13 | 中国海洋石油总公司 | A kind of underground signal modulator approach and device |
| CN110761776A (en) * | 2018-07-09 | 2020-02-07 | 航天科工惯性技术有限公司 | Flow monitoring system, method and rotary valve mud pulse generator |
| 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 |
| US10830037B2 (en) | 2018-12-29 | 2020-11-10 | Institute Of Geology And Geophysics, Chinese Academy Of Sciences | Constant amplitude adjusting method and system for pressure pulse of drilling tool |
| CN110500087A (en) * | 2019-08-28 | 2019-11-26 | 中国石油集团川庆钻探工程有限公司 | Signal transmission method based on mud pulse pressure amplitude |
| CN111535802A (en) * | 2020-05-08 | 2020-08-14 | 中国石油大学(华东) | Mud pulse signal processing method |
| 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 |
| CN114995207A (en) * | 2021-03-02 | 2022-09-02 | 中国石油化工股份有限公司 | An underground motor control system |
| CN114060012A (en) * | 2022-01-18 | 2022-02-18 | 中国石油大学胜利学院 | A mud pulse signal detection device |
| CN118774761A (en) * | 2024-09-10 | 2024-10-15 | 德州联合石油科技股份有限公司 | Mud pulse signal encoding method and device for near-bit geological steering system |
| CN118774761B (en) * | 2024-09-10 | 2025-01-10 | 德州联合石油科技股份有限公司 | Mud pulse signal coding method and device for near-bit geosteering system |
| CN118933746A (en) * | 2024-10-14 | 2024-11-12 | 中国石油集团川庆钻探工程有限公司 | A mud continuous wave measurement while drilling control system and method |
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| CN103670380B (en) | 2017-01-25 |
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