CN103670380B - Down-hole slurry pulse signal generation device - Google Patents
Down-hole slurry pulse signal generation device Download PDFInfo
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- CN103670380B CN103670380B CN201310697658.8A CN201310697658A CN103670380B CN 103670380 B CN103670380 B CN 103670380B CN 201310697658 A CN201310697658 A CN 201310697658A CN 103670380 B CN103670380 B CN 103670380B
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- pulse signal
- driving valve
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- mud
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- 239000002002 slurry Substances 0.000 title claims abstract description 29
- 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
- 230000033001 locomotion Effects 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 13
- 238000005553 drilling Methods 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 10
- 241000894007 species Species 0.000 description 6
- 241001074085 Scophthalmus aquosus Species 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004899 motility Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Indication Of The Valve Opening Or Closing Status (AREA)
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 down-hole phospecting apparatus field, it is related to a kind of mud pulse generator, specifically a kind of down-hole
The generator of mud pulse signal.
Background technology
In recent years, with the continuous development of the drilling technology of oil, natural gas, coal gas and geological prospecting, mwd
The wireless drillings such as (measurewhiledrilling, measurement while drilling), lwd (loggingwhiledrilling, with brill well logging)
Instrument application commercially is more and more extensive.Pulse generator is the most important ingredient of wireless drilling measuring system, main
The wave transmission signal of mud to be passed through.The ultimate principle of mud-pulse transmission is the signal warp knit that downhole sensor measures
Code, by the drive control circuit of pulse generator, drives the work such as cone valve, rotary valve or the rotor of mud pulse generator, produces
Raw effect of damming, thus producing mud-pressure pulses, pressure pulse is delivered to ground through the mud in drill string, and ground column is pacified
The pressure transducer of dress receives pressure pulse signal, after filtering after shaping, by the decoding system decoding on ground, thus obtaining well
Lower transmission come up with bore data signal.
Mud-pulse transmission means is mainly negative pulse, positive pulse and three kinds of continuous wave impulse at present.Mud negative pulse is sent out
The operation principle of raw device is as shown in figure 1, be by opening an eduction valve, can make the mud in drill string through on eduction valve and drill collar
Discharge orifice to bore hole annulus, thus causing the mud pressure within drill string to reduce, it is hereby achieved that numerical value is negative pulse
Signal.But due to needing that discharge orifice is opened up on drill collar, easily drill string is caused damage, the erosion effect to parts is compared
By force, and transmission speed also cannot meet present demand, it has been fade-in declining trend.
The operation principle of mud positive pulse generator is as shown in Fig. 2 be by changing needle-valve in mud positive pulse generator
With the relative position of aperture, that is, with the continuous change of the position of needle-valve, thus it is possible to vary the sectional area of runner, thus causing drill string
The rising of internal mud pressure, then can obtain numerical value is positive pulse signal.But either negative type pulse generator is also
Its transmission of positive pulse generator with the speed boring data signal all slow it is impossible to meet existing in industry to boring data letter
Number transmission speed demand.
Continuous pulse generator produces rotation as shown in figure 3, its operation principle is mainly rotor in the presence of mud,
On the top of rotor, the stator with the equal blade quantity of rotor is installed, when rotated the excessively stream end of the overflowing end face of rotor and stator
The corresponding change in face and produce continuous sine pressure wave, and pass to ground receiving wastewater facility.The signal of continuous wave is stronger,
Easily receive, receive speed.But because pressure value all the time all can change, will produce multiple continuous
Pressure value, and existing correlation technique is perfect not enough, is easily affected by noise jamming, its receive with boring data
The accuracy of signal is just difficult to ensure that, leads to overall precision inadequate.
Content of the invention
For this reason, the technical problem to be solved is that in prior art, pressure signal transmission speed is slow, precision is not
Height, thus propose a kind of can fast and accurately down-hole slurry pulse signal generating meanss.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of generator of down-hole slurry pulse signal, including shell and the pulse generation that is arranged on described enclosure
Device, wherein said pulse generator includes
Multiple driving valves, each described driving valve built-in sensors, by the mud pressure number detecting and valve
Move distance signal transmission is 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 outside described driving valve, drives valve size, mating shapes with described, by two
Described restraint seat limits the described area size driving valve movement；
Multiple slurry channels, drive valve and the laminating degree of described restraint seat to control described slurry channel by described
Open and close.
Further described driving valve quantity is 4.
Further described driving valve multiple can merge and use, and reduce the quantity of described slurry channel.
Further described sensor is pressure and range sensor.
Further described driving valve is subject to mud active area to be more 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 described area size driving valve to move up.
Further described restraint seat limits the described area size driving valve to move down.
Further described drive rod is provided with the displacement detector for detecting described drive rod propulsion size.
Further described displacement detector adopts resistance measurement mode or triggers metering system using electromagnetic position.
The technique scheme of the present invention has the advantage that compared to existing technology
(1) generator of a kind of down-hole slurry pulse signal of the present invention, including multiple driving valves, described drive
Movable valve built-in sensors, the displacement signal of the mud pressure detecting and signal and drive rod is delivered to control system.Many
The individual setting driving valve so that the species of the mud pulse signal producing more rather than single only " 0 " and " 1 " or
Person only has " 0 " and " -1 " both states and the presence due to independent communication system, not only can be effectively guaranteed whole
The transmission speed of body, also so that the precision of detection has certain guarantee.Simultaneously can be in conjunction with such as qpsk, qam, ofdm etc. are multiple
Modulation system, improves message transmission rate further.
(2) a kind of down-hole slurry pulse of the present invention, with the generating meanss boring signal, can control driving valve work
The quantity made, can suitably reduce the quantity driving valve in the case that drilling well is shallower or merging uses and drives valve,
The quantity driving valve can suitably be increased in the case of drilling well relatively depth, there is very big motility.
(3) a kind of down-hole slurry pulse of the present invention is with the generating meanss boring signal, drive valve and restraint seat it
Between mud actual internal area decide the power of signal, can be by selecting to drive the external diameter of valve and the internal diameter chi of restraint seat
Very little come control signal strong and weak, can not only ensure various with the speed boring data signal transmission, can also be allowed to be applied to difference
Well, different displacements, the working environment of different well depth, greatly improve the adaptability to various environment.Meanwhile, also can change
Become folding degree and the folding phase place of each valve, reach various conventional communication modes, such as qpsk, qam and ofdm etc..
Brief description
In order that present disclosure is more likely to be clearly understood, specifically inventing and combining attached below according to the present invention
Figure, the present invention is further detailed explanation, wherein
Fig. 1 is the fundamental diagram of negative type pulse generator；
Fig. 2 is the fundamental diagram of positive pulse generator；
Fig. 3 is the fundamental diagram of continuous pulse generator；
Fig. 4 is a kind of generating meanss structure chart of down-hole slurry pulse signal of the present invention；
Fig. 5 is four and drives a kind of down-hole slurry pulse signal oscillogram produced by valve；
Fig. 6 is the generating meanss structure chart of another kind down-hole slurry pulse signal of the present invention.
In figure reference is expressed as: 1- drives valve, 2- drive rod, 3- restraint seat, 4- slurry channel.
Specific embodiment
A kind of generator of this down-hole slurry pulse signal described to invention is specifically addressed below in conjunction with the accompanying drawings.
A kind of generating meanss of mud pulse signal, as shown in figure 4, the arteries and veins including shell and being arranged on described enclosure
Rush generator, wherein said pulse generator includes:
Multiple driving valves 1, each described driving valve 1 built-in sensors, by the mud pressure detecting and valve
Position signalling passes to control system；
Drive rod 2, is connected one by one with described driving valve 1, controls moving up and down of described driving valve 1；
Restraint seat 3, is arranged on outside described driving valve 1, drives valve 1 size, mating shapes with described, by two
Individual described restraint seat 3 limits the described area size driving valve 1 movement；
Multiple slurry channels 4, drive valve 1 and the laminating degree of described restraint seat 3 to control described mud to lead to by described
The open and close in road 4.
The present invention is the improvement carrying out on the basis of positive pulse generator, and its operation principle is wireless drilling down-hole work
Command parameter is encoded by tool in particular manner, produces pulse signal, and this pulse signal controls described drive rod 2 to drive
Described driving valve 1 moves up and down, and recycles the strength of mud to make driving valve 1 produce synchronous up and down motion, thus changes
Become the mud actual internal area driving between valve 1 and restraint seat 3.When driving valve 1 away from shown restraint seat 3, mud
Can more successfully pass through from current limliting seat；When described driving valve 1 is close to described restraint seat 3, mud actual internal area reduces,
Thus creating positive mud-pressure pulses in drilling rod.The pulse signal of described drive rod controls driving valve 1 remote
From or the displacement close to described restraint seat 3 and time, thus controlling width and the interval of pulse.
The described quantity driving valve 1 can be 2,3 or 4 or even more, and the selection of its quantity is according to difference
Geological environment, different exploring equipments precision require and voluntarily select.Driving valve 1 described in each of which is corresponding
Independent control command.Multiple settings driving valves 1 are so that detect is more with the species boring data signal, and not
It is single only having " 0 " and " 1 " or only have " 0 " and " -1 " both states.Following table is to drive the quantity of valve and with brill number
It is believed that number species corresponding relation.
| Valve quantity | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Signal kinds | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
In conjunction with upper table and Fig. 5, it may be seen that when having one and driving valve 1, described with boring data signal
Species is 2, i.e. " 0 " and " 1 "；When there is two driving valves 1, described is 3 with the species boring data signal, that is,
" 0 ", " 1 " and " 2 ".Fig. 5 is a kind of possible oscillograms with brill data signal corresponding when there being four driving valves 1.
Draw analogous conclusions, the quantity of described driving valve 1 is more, the species with brill data signal of acquisition is also more, not only can have
Imitate ensure that overall transmission speed, also so that the precision of detection has certain guarantee.
Simultaneously can be in conjunction with such as qpsk(QPSK), qam(quadrature amplitude modulation), ofdm(OFDM)
Deng Different Modulations, significantly improve message transmission rate.Due to described qpsk, the Different Modulations such as qam, ofdm are existing
There are conventional technological means in technology, those skilled in the art are not it is to be understood that describing in detail herein.
For the requirement to precision of most of geological environment and existing exploring equipment, in general drive valve 1
The even number that is arranged within ten of quantity just can meet existing demand.Driving valve 1 quantity of the present invention is preferably 4.
Those skilled in the art are it is to be understood that the described preferred quantity of driving valve 1 is intended to can fill for those skilled in the art
Point implement the present invention, be not intended to limit the present invention, other obvious number change also protection scope of the present invention it
Interior.
Preferably described driving valve 1 can multiple quantity merging use, reducing described slurry channel 4.Work as setting
The quantity driving valve 1 is multiple, and when not needing so high precision when actually used, can select two or more drives
The merging of movable valve 1 uses.As being 8 when the described quantity driving valve 1, but do not need so high when actually used
During precision, the two described driving valves 1 that can be connected merge use, serve with four described effects driving valves 1
Really.An entirety acquisition data will be regarded as, using more flexible by multiple valves 1.Driving valve can be controlled according to actual needs
The quantity of door 1 work, can suitably reduce the quantity driving valve in the case that drilling well is shallower or merging uses and drives valve
Door, can suitably increase the quantity driving valve in the case of drilling well relatively depth, have very big motility.
The built-in sensor of described driving valve 1 is pressure and range sensor.But those skilled in the art should know
Dawn, described sensor includes but is not limited to pressure and range sensor, and other are simply sensed because of the demand of detection
Device increases or replaces also within protection domain of the present utility model.
It is subject to mud active area to be more than or less than described restraint seat 3 on described driving valve 1 with reference to Fig. 4 and Fig. 6
Limited the feelings of the described area size driving valve 1 to move up by mud active area and described restraint seat 3
Condition illustrates.
Described driving valve 1 is set by the relation between mud active area by mud active area and described restraint seat 3
Need to be set with reference to practical situation.When the scope of data needing detection is wider, described driving valve 1 is in general needed to be subject to
Mud active area is larger, otherwise is then that described driving valve 1 is subject to mud active area smaller.Fig. 4 is described driving valve
Door 1 is subject to mud active area to be more than described restraint seat 3 and is subject to mud active area, and Fig. 6 is then that described driving valve 1 is acted on by mud
Area is less than described restraint seat 3 and is subject to mud active area.The mud actual internal area between valve 1 and restraint seat 3 is driven to determine
The power of signal, can be by selecting to drive the external diameter of valve 1 and the internal diameter size of restraint seat 3 strong and weak come control signal, no
Only ensure that the various speed with brill data signal transmission, can also be allowed to be applied to different wells, different displacements, different well
Deep working environment, greatly improves the adaptability to various environment.
Described restraint seat shown in Fig. 4 limits the described area size driving valve 1 to move up.Due to driving valve 1
End face width be less than two shown restraint seats 3 between width, so when described drive valve 1 described drive rod 2 work
With under, when moving up, at most can only reach the position of described restraint seat 3.Fig. 6 is then a kind of deformation that Fig. 4 is carried out, described
Restraint seat 3 limits the described area size driving valve 1 to move down.The shape of both driving valves 1 is all using trapezoidal knot
Structure, simply preferred embodiment, those skilled in the art are not it is to be understood that the present invention is to described driving valve 1 for one kind
Shape be defined, other obvious change of shape are all within protection scope of the present invention.
Described drive rod 2 is provided with the displacement detector for detecting described drive rod 2 propulsion size.Described displacement detecting
Device detects to described drive rod 2, when described drive rod 2 propulsion size is detected and being not in place, controls described drive rod 2 to add
High thrust is so as to can accurately put in place it is ensured that the displacement of each of which action can be accurate to position.Described displacement detector adopts resistance
Metering system or using electromagnetic position trigger metering system.Including but not limited to both metering systems, people in the art
Member is it is to be understood that other obvious metering systems are also within protection scope of the present invention.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.Right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (7)
1. a kind of generator of down-hole slurry pulse signal it is characterised in that: include shell and be arranged on described enclosure
Pulse generator, wherein said pulse generator includes
Multiple driving valves, each described driving valve built-in sensors, by the motion of the mud pressure detecting and valve away from
From signal transmission 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 outside described driving valve, drives valve size, mating shapes with described, by described in two
Restraint seat limits the described area size driving valve movement；
Multiple slurry channels, by the described unlatching driving valve and the laminating degree described slurry channel of control of described restraint seat
With closing；
Described sensor is pressure and range sensor.
2. the generator of down-hole slurry pulse signal according to claim 1 is it is characterised in that described driving valve is subject to
Mud active area is more than described restraint seat and is subject to mud active area.
3. the generator of down-hole slurry pulse signal according to claim 1 is it is characterised in that described driving valve is subject to
Mud active area is less than described restraint seat and is subject to mud active area.
4. the generator of down-hole slurry pulse signal according to claim 1 is it is characterised in that described restraint seat limits
The described area size driving valve to move up.
5. the generator of down-hole slurry pulse signal according to claim 1 is it is characterised in that described restraint seat limits
The described area size driving valve to move down.
6. the generator of the down-hole slurry pulse signal according to any one of claim 1-5 is it is characterised in that described drive
Lever is provided with the displacement detector for detecting described drive rod propulsion size.
7. the generator of down-hole slurry pulse signal according to claim 6 is it is characterised in that described displacement detector
Trigger metering system using resistance measurement mode or using electromagnetic position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310697658.8A CN103670380B (en) | 2013-12-18 | 2013-12-18 | Down-hole slurry pulse signal generation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310697658.8A CN103670380B (en) | 2013-12-18 | 2013-12-18 | Down-hole slurry pulse signal generation device |
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| CN103670380A CN103670380A (en) | 2014-03-26 |
| CN103670380B true CN103670380B (en) | 2017-01-25 |
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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 |
| 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 |
| 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 |
| CN110500087B (en) * | 2019-08-28 | 2023-03-31 | 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 |
| CN111535802B (en) * | 2020-05-08 | 2023-04-14 | 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 |
| CN114995207B (en) * | 2021-03-02 | 2025-06-24 | 中国石油化工股份有限公司 | A downhole motor control system |
| CN114060012B (en) * | 2022-01-18 | 2022-04-12 | 中国石油大学胜利学院 | A mud pulse signal detection device |
| 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 |
| CN118933746B (en) * | 2024-10-14 | 2025-01-24 | 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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Inventor after: Liu Naizhen Inventor after: Wu Suming Inventor after: Wang Huaping Inventor after: Liang Renyue Inventor after: Ren Wei Inventor after: Zhao Qihui Inventor after: Gu Weikang Inventor after: Wang Hao Inventor after: Gong Jigang Inventor after: Zhao Juntang Inventor after: Yang Nailin Inventor after: Liu Ce Inventor after: Li Jing Inventor before: Liu Ce Inventor before: Li Jing Inventor before: Wu Suming Inventor before: Wang Huaping Inventor before: Liang Renyue Inventor before: Ren Wei |
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Effective date of registration: 20171208 Address after: 100000 Beijing Chaoyang District Anli Road No. 101 Patentee after: Chinese Petroleum Group Changcheng Drilling Engineering Co., Ltd. Address before: Suzhou City, Jiangsu province 215163 Suzhou New District kolding Road No. 78 Building No. 5 Room 102 Software Park Patentee before: BITSWAVE (SUZHOU) CO., LTD. |
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Effective date of registration: 20201123 Address after: No. 6, liupukang, Xicheng District, Beijing 100120 Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. Address before: 100000 Beijing Chaoyang District Anli Road No. 101 Patentee before: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. |
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