CN102733799A - Well drilling information acoustic wave transmission relay device based on drilling string information channel - Google Patents
Well drilling information acoustic wave transmission relay device based on drilling string information channel Download PDFInfo
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Abstract
本发明涉及石油与天然气钻井工程领域随钻信息传输装置，具体是基于钻柱信道的钻井信息声波传输中继装置，包括声波传感器、调制电路、电源和发射换能器总成，所述的调制电路接收所述的声波传感器输出的电信号，经过处理而获得有效数据，并将该有效数据传输给发射换能器总成；所述的电源用于为声波传感器、调制电路和声波发射换能器供电。本发明可有效长时间工作于井下的复杂环境，增加声波在钻柱中的传输距离；并确保有效检出和定向发射信号，减少振铃干扰。
The invention relates to an information transmission device while drilling in the field of oil and natural gas drilling engineering, in particular to an acoustic wave transmission relay device for drilling information based on a drill string channel, including an acoustic sensor, a modulation circuit, a power supply and a transmitting transducer assembly. The circuit receives the electrical signal output by the acoustic wave sensor, obtains effective data through processing, and transmits the effective data to the transmitting transducer assembly; the power supply is used for transducing the acoustic wave sensor, the modulation circuit and the acoustic wave emission power supply. The invention can effectively work for a long time in complex downhole environments, increase the transmission distance of sound waves in the drill string, ensure effective detection and directional emission of signals, and reduce ringing interference.
Description
Technical field
The present invention relates to oil and gas drilling engineering field with boring information carrying means, specifically is a kind of drilling information sonic transmissions relay based on the drill string channel.
Background technology
According to the present situation of world oil and gas drilling engineering and to the prediction of development in the future; The oil drilling industry will face more complex geological conditions and worse natural environment, recognize that in time down-hole drilling parameter and geologic parameter are the important leverages that reduces the drilling well risk, improves drilling benefit.The drilling information transmission means that has proposed at present and used mainly contains four kinds of wire transmission, drilling fluid transmission, electromagnetic transmission and sonic transmissions.
Wire transmission mode utilizes cable to do the carrier of information transmission, can down-hole information be transferred to ground, also can surface instruction information be transferred to downhole tool and equipment, and that has realized information reaches transmitted in both directions fast, in a large number.But this kind mode exists deficiency, promptly in the drilling process rotation of drill string cause easily cable rub or twist disconnected, normally the carrying out of influence construction.
The compression wave that drilling fluid (mud) transmission means is utilized drilling fluid is as the signal transport vehicle, and the drilling fluid fluid column carries out the information transmission as channel.Because the restriction of compression wave spread speed in drilling fluid, this kind transmission means message transmission rate is slower, and the transmission per unit of time information content is few, and transmission course is subject to The noise.This mode has dependence to drilling fluid in addition, and can not realize the transmitted in both directions of information, has limited the scope of application of this kind information transmission mode.
The electromagnetic transmission mode has realized the transmitted in both directions of information, has also broken away from the dependence to drilling fluid, but also exists shortcoming: bigger decay is arranged in the stratum; And there is dependence on the stratum, and promptly different strata has different electromagnetic propertys, and this can cause the versatility variation of transmission system; In addition, its cost is higher, and will realize long Distance Transmission; Powerful driving power must be arranged, and to want to reach these conditions are comparison difficulties to narrow space in the down-hole.
Drilling information sonic transmissions mode be with drill string as the acoustic signal transmission channel, as signal vehicle, carry out the Wireless transmission mode of down-hole information with sound wave.Since utilize drilling rod as the down-hole information high-speed transfer with sound wave channel; Whether the existence that this information transmission mode need not depend on drilling fluid reaches character; Do not receive the interference of magnetisable material in the stratum, this provides condition richly endowed by nature for the down-hole information high-speed transfer.This transmission means has also that device structure is simple, cost is lower, is easy to advantages such as directional transmissions and spread speed are exceedingly fast in addition, and becomes one of focus of current down-hole information transmission technique field research.Yet sound wave is propagated the serious problem of decay that exists and is being perplexed spudder author always in drill string.How to overcome the difficult problem that the success or not of the sound wave decay in drill string becoming drilling information sonic transmissions technology must solve.
In order to overcome the above problems, the present invention has done useful improvement.
Summary of the invention
The technical problem that (one) will solve
The objective of the invention is to have overcome in the existing drilling information sonic transmissions mode, sound wave is propagated the problem that exists decay serious in drill string, thereby can increase the effective propagation path of acoustic signals.
(2) technical scheme
The present invention realizes through following technical scheme: a kind of drilling information sonic transmissions relay based on the drill string channel; Comprise sonic sensor, modulation circuit, power supply and transmitting transducer assembly; Described modulation circuit receives the signal of telecommunication of described sonic sensor output; Obtain valid data through handling, and these valid data are transferred to the transmitting transducer assembly; Described power supply is used to sonic sensor, modulation circuit and the power supply of transmitting transducer assembly.
Particularly, described modulation circuit comprises signal conditioning circuit, the down-hole department of computer science signal transmission circuit of unifying;
Described signal conditioning circuit receives the signal of telecommunication of described sonic sensor output, and amplify, filtering and adjustment, then this signal of telecommunication is sent to the down-hole computer system;
The signal of telecommunication that described down-hole computer system receiving signal reason circuit sends, and through obtaining valid data behind the demodulation sign indicating number, and preserve this valid data; Recompile and the described valid data of modulation then, and with the output of this valid data;
Described signal transmission circuit receives the signal of the valid data that send from the down-hole computer system, and sends to the transmitting transducer assembly.
Further, described down-hole computer system is electrically connected respectively with described signal conditioning circuit and signal transmission circuit.
In addition, this drilling information sonic transmissions relay comprises that also sound wave receives joint; Described sonic sensor is an accelerometer, and this accelerometer is installed in described sound wave and receives the joint position contacting.
Further, also comprise the accelerometer positioning body, this accelerometer positioning body receives joint with described sound wave and is fixedly connected respectively with accelerometer.
Further, also comprise the transmitting terminal joint, described transmitting transducer assembly is pressed in described transmitting terminal joint through setscrew nut.
Further, also comprise the transducer adjusting ring, this transducer adjusting ring is arranged between said transmitting transducer assembly and the described setscrew nut.
Further again, also comprise the protection of instrumentation tube; Described transmitting terminal joint links to each other with sound wave reception joint and constitutes connecting elements, and this connecting elements and protection of instrumentation tube constitute seal chamber.
In addition, described transmitting transducer assembly comprises the thin circular ring plate of the ring-type of radial polarization, and the material of the thin circular ring plate of this ring-type is a lead lanthanum zirconate titanate (PLZT) electrooptical ceramics material; The thin circular ring plate quantity of described ring-type is at least two, and adopts the machinery series connection between the thin circular ring plate of described ring-type and the mode of circuit parallel connection connects; The thin circular ring plate polarization of said two adjacent ring-types is opposite.
Further, described transmitting transducer assembly also comprises metal bezel plate, metal back cover plate and electrode slice; Pass through the epoxy resin glue glued adhesion between the thin circular ring plate of described ring-type and said metal bezel plate, metal back cover plate and the electrode slice.
(3) beneficial effect
Compare with product with prior art, the present invention has following advantage:
1, adopts the broadband transducer, confirm frequency of utilization, strengthened versatility, guarantee effectively to detect and the directional transmissions signal, reduce ring and disturb according to different drill column structures.
2, the bulk strength of device is strong, can satisfy the needs of underground work.
3, can effectively work long hours in the complex environment of down-hole, increase the transmission range of sound wave in drill string.
4, can realize the quick transmission of information, accelerate the ground construction personnel, reduce the drilling well risk, improve drilling benefit to the understanding of down-hole situation and to the reaction that the down-hole complex accident is made.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an A-A generalized section of the present invention;
Fig. 3 is a B-B generalized section of the present invention.
The specific embodiment
Do a detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
A kind of drilling information sonic transmissions relay based on the drill string channel as shown in Figure 1 receives joint sealing assembly 7, axle seal assembly 8, transducer adjusting ring 9, setscrew nut 10, modulation circuit 11, accelerometer positioning body 12, accelerometer 13, protection tube alignment pin 14 and sound wave reception joint 15 by transmitting terminal joint 1, emission joint sealing assembly 2, transmitting transducer assembly 3, protection of instrumentation tube 4, instrument room 5, power supply 6, sound wave and forms.
Transmitting terminal joint 1 receives joint 15 through being threaded to one with sound wave, is used to transmit axial load and moment of torsion; Axle seal assembly 8 is installed on the outer rim that is threaded that transmitting terminal joint 1 and sound wave receive joint 15, is used to prevent that hollow borehole liquid from passing through; Transmitting terminal joint 1 constitutes a hermetic cavity body with connecting elements and protection of instrumentation tube 4 that sound wave receives joint 15, is used for installing and placing interior instrument; Sound wave receives joint sealing assembly 7 and emission joint sealing assembly 2 is used to prevent that the outer space drilling fluid from getting into the cavity of installing and placing interior instrument; Protection tube alignment pin 14 connects as one transmitting terminal joint 1 and connector and the protection of instrumentation tube 4 that sound wave receives joint 15, realizes static relatively; Transmitting transducer assembly 3 is pressed in transmitting terminal joint 1 place through setscrew nut 10, realizes the conversion of electroacoustic signal; Adjusting ring 9 between transmitting transducer assembly 3 and setscrew nut 10, be used to regulate 10 of transmitting transducer assembly 3 and setscrew nuts apart from the gap and prevent the hard contact on two sides.
As shown in Figure 2, instrument room 5 is used to install power supply 6, modulation circuit 11, accelerometer 13 through being threaded in transmitting terminal joint 1, and this accelerometer 13 is as sonic sensor, and other sensor such as the transducer of can exerting oneself substitutes.Power supply 6 can be transmitting transducer assembly 3 and accelerometer 13 provides energy.Modulation circuit 11 places in the described instrument room 5, comprises signal conditioning circuit, down-hole computer system and signal transmission circuit, and this down-hole computer system is connected respectively with signal transmission circuit with signal conditioning circuit.The effect of signal conditioning circuit is: with receiving sensor be that the signal of telecommunication of accelerometer 13 output amplifies, filtering and adjustment so that it can be received by the down-hole computer system.The effect of down-hole computer system is: monitor and ensure the normal operation of whole repeater circuit system; Receive the acoustic signals after conditioning, and obtain valid data through the demodulation sign indicating number; Preserve valid data; To data recompile and modulation, export to signal transmission circuit.The effect of signal transmission circuit is: receive the signal from the down-hole computer system, and for transmitting transducer assembly 3 driving is provided.
As shown in Figure 3, accelerometer 13 is installed in the instrument room 5, and receives joint 15 1 ends near sound wave, and it receives joint 15 with sound wave and contacts, and is used to measure the bottom and passes the acoustic signals of coming.Accelerometer positioning body 12 receives joint 15 with described sound wave and is fixedly connected respectively with accelerometer 13, is used to realize that accelerometer 13 and sound wave receive the tight of joint 15 and contact.The inverting element of described transmitting transducer assembly 3 is selected lead zirconate titanate (PZT) piezoceramic material of radial polarization for use; Piezoelectric is shaped as the thin circular ring plate of ring-type; The thin circular ring plate of this ring-type is at least two; Adopt the machinery series connection between them and the mode of circuit parallel connection connects, the polarised direction of the thin circular ring plate of adjacent two ring-types is opposite, thereby makes that the 3 whole extensional vibrations of transmitting transducer assembly can be superimposed.Transmitting transducer assembly 3 also comprises metal bezel plate, metal back cover plate and electrode slice; The front shroud material of transmitting transducer assembly 3 is duralumin or duralumin, and the back shroud material is a brass.Use the epoxy resin glue glued adhesion between the thin circular ring plate of ring-type and electrode slice and the forward and backward cover plate of metal.
Described power supply 6 is high temperature resistant lithium battery or chargeable high temperature resistant lithium battery.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. drilling information sonic transmissions relay based on the drill string channel; It is characterized in that; Comprise sonic sensor, modulation circuit, power supply and transmitting transducer assembly; Described modulation circuit receives the signal of telecommunication of described sonic sensor output, this signal of telecommunication is handled and the acquisition valid data, and these valid data are transferred to the transmitting transducer assembly; Described power supply is used to sonic sensor, modulation circuit and the power supply of transmitting transducer assembly.
2. drilling information sonic transmissions relay according to claim 1 is characterized in that, described modulation circuit comprises signal conditioning circuit, the down-hole department of computer science signal transmission circuit of unifying;
Described signal conditioning circuit receives the signal of telecommunication of described sonic sensor output, and amplify, filtering and adjustment, then this signal of telecommunication is sent to the down-hole computer system;
The signal of telecommunication that described down-hole computer system receiving signal reason circuit sends, and through obtaining valid data behind the demodulation sign indicating number, and preserve this valid data; Recompile and the described valid data of modulation then, and with the output of this valid data;
Described signal transmission circuit receives the signal of the valid data that send from the down-hole computer system, and sends to the transmitting transducer assembly.
3. drilling information sonic transmissions relay according to claim 2 is characterized in that described down-hole computer system is connected respectively with signal transmission circuit with described signal conditioning circuit.
4. drilling information sonic transmissions relay according to claim 1 is characterized in that, comprises that also sound wave receives joint; Described sonic sensor is an accelerometer, and this accelerometer is installed in described sound wave and receives the joint position contacting.
5. drilling information sonic transmissions relay according to claim 4 is characterized in that, also comprises the accelerometer positioning body, and this accelerometer positioning body receives joint with described sound wave and is fixedly connected respectively with accelerometer.
6. drilling information sonic transmissions relay according to claim 4 is characterized in that, also comprises the transmitting terminal joint, and described transmitting transducer assembly is pressed in described transmitting terminal joint through setscrew nut.
7. drilling information sonic transmissions relay according to claim 6 is characterized in that, also comprises the transducer adjusting ring, and this transducer adjusting ring is arranged between said transmitting transducer assembly and the described setscrew nut.
8. drilling information sonic transmissions relay according to claim 6 is characterized in that, also comprises the protection of instrumentation tube; Described transmitting terminal joint links to each other with sound wave reception joint and constitutes connecting elements, and this connecting elements and protection of instrumentation tube constitute seal chamber.
9. drilling information sonic transmissions relay according to claim 1 is characterized in that, described transmitting transducer assembly comprises the thin circular ring plate of the ring-type of radial polarization, and the material of the thin circular ring plate of this ring-type is a lead lanthanum zirconate titanate (PLZT) electrooptical ceramics material; The thin circular ring plate quantity of described ring-type is at least two, and adopts the machinery series connection between the thin circular ring plate of described ring-type, and the circuit on the thin circular ring plate of this ring-type adopts the mode of parallel connection to connect; The thin circular ring plate polarization of two adjacent ring-types is opposite.
10. drilling information sonic transmissions relay according to claim 9 is characterized in that described transmitting transducer assembly also comprises metal bezel plate, metal back cover plate and electrode slice; Pass through the epoxy resin glue glued adhesion between the thin circular ring plate of described ring-type and said metal bezel plate, metal back cover plate and the electrode slice.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210212817.6A CN102733799B (en) | 2012-06-26 | 2012-06-26 | Well drilling information acoustic wave transmission relay device based on drilling string information channel |
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| CN201210212817.6A CN102733799B (en) | 2012-06-26 | 2012-06-26 | Well drilling information acoustic wave transmission relay device based on drilling string information channel |
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| CN102733799B CN102733799B (en) | 2014-06-11 |
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| CN103089249B (en) * | 2013-01-09 | 2015-07-15 | 电子科技大学 | Signal wireless electromagnetism transmission system while drilling |
| CN103089249A (en) * | 2013-01-09 | 2013-05-08 | 电子科技大学 | Signal wireless electromagnetism transmission system while drilling |
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