CN101515039A - Underground power supply and signal transmission system - Google Patents
Underground power supply and signal transmission system Download PDFInfo
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- CN101515039A CN101515039A CNA2008100096649A CN200810009664A CN101515039A CN 101515039 A CN101515039 A CN 101515039A CN A2008100096649 A CNA2008100096649 A CN A2008100096649A CN 200810009664 A CN200810009664 A CN 200810009664A CN 101515039 A CN101515039 A CN 101515039A
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Abstract
The invention relates to a high-efficiency power supply and telemetered signal transmission system. The transmission system comprises at least one alternating current transmission circuit, at least one signal transmission circuit, a well measuring cable, at least one cable terminal circuit and a direct current transmission circuit; alternating current is coupled by a transformer or directly transmitted to the alternating current transmission circuit; subsequently, alternating current is provided for underground instruments by the alternating current transmission circuit; a signal is coupled by the transformer or directly transmitted to the signal transmission circuit; and subsequently, the signal transmission circuit transmits a downlink signal to the underground instruments or transmits an uplink signal to ground equipment. The transmission system can meet complex power-supply requirements of the underground instruments and large data acquisition of the underground instruments.
Description
Technical field
The present invention relates to underground power supply and signal transmission system.In the logging operation process, on the one hand, uphole equipment provides required working power for subsurface equipment by described transmission system safely; On the other hand, described transmission system can be transmitted telesignalisation between uphole equipment and subsurface equipment.
Background technology
Well logging refers generally to use the process that multiple subsurface equipment comes measuring well week stratum physical characteristics.At present, main logging method has resistivity, sound wave and radioactivity.In conventional logging, by cable subsurface equipment is transferred in the well earlier, begin logging operation then.As shown in Figure 1, in the logging operation process, at first subsurface equipment is transferred in the well; Secondly, uphole equipment provides the required power supply of logging operation and sends order to subsurface equipment to subsurface equipment by described system; Then, subsurface equipment is gathered various formation datas in the last process of carrying or transferring; At last, these data are transferred to ground by cable telemetry system, and uphole equipment writes down, shows, analyzes and handle these data again.
Logging cable commonly used has heptcable and single core cable.Logging cable not only can transmission signals and electric energy, and because its mechanical property is very good, so can also bear the huge tension force that produces in the well logging process.At present, most popular logging cable is a heptcable.Fig. 2 A is the structure cross section of heptcable commonly used: wherein, A is a copper conductor, B is an insulating material, C is a packing material, D is an inner armor, and E is an outer armor, and the resistance value of cable core is relevant with cable core material therefor and length, 7 cable cores insulate each other, are in order to increase the physical strength of cable and design two-layer outer armor purpose.Heptcable is made up of seven cable cores (numbering 1 to 7), and cable core 7 occupies central authorities, cable core 1 to 6 be centered around symmetrically 7 around.On the every cable core certain resistance is arranged all, the size of resistance is directly proportional with cable length.Usually, the resistance of cable is approximately 33 ohm of every kms.In electric energy transmitting and signal process, the resistance of cable can cause the loss of electric energy and the loss of signal.The length of heptcable can reach thousands of rice.Because every cable core all has its intrinsic inductance, has " cross-talk " between the cable core.Therefore, in transmission signal process, signal can distort.Fig. 2 B is the transmission mode synoptic diagram of conventional heptcable.According to balance/orthogonality principle, 7 cable cores of heptcable are made up by different way can form 7 kinds of transmission modes: pattern 1 (M1), pattern 2 (M2), mode 3 (M3), pattern 4 (M4), pattern 5 (M5), pattern 6 (M6) and mode 7 (M7).
Use 7 kinds of transmission mode electric energy transmittings and signal can reduce mutual interference, but transfer efficiency but have difference.Pattern 1 and 6 cable core resistance minimum, their the most suitable electric energy transmittings.Because mode 7 can be big and speed is high for the semaphore of transmission, so M7 often is used to transmit data.The frequency response of pattern 5 is better but poorer than pattern 6 than pattern 2,3,4.But pattern 5 realizes easily, so M5 also is usually used in transmitting data.Mode 3 requires than higher the signal type of drive, and still, if reasonably design transmission circuit, M3 is electric energy transmitting and signal very effectively also.
In the well logging transmission course, heptcable should transmit data powers to subsurface equipment again simultaneously.Should a kind of transmission mode or the combination of several modes if reasonably make, just can make between the feed circuit, between the signal circuit, the interference between feed circuit and the signal circuit drops to minimum.
Along with development of well logging technology, the quantity of subsurface equipment and complexity all constantly increase and improve.Correspondingly, subsurface equipment also increases the demand of electric energy thereupon; The signal and the data volume of subsurface equipment collection significantly increase; Requirement to message transmission rate also significantly improves.The required power supply of subsurface equipment generally comprises primary power, accessory power supply, electrode supply and direct supply.The data of transmitting between uphole equipment and the subsurface equipment generally are divided into the simulating signal of upstream data (also can be described as signal), downlink data, spontaneous potential (SP) signal and other well logging.
At present, domestic well logging field is also relatively backward in cable conductor allocative decision, transmission circuit design; In addition, the transmission kind of supply subsurface equipment power supply is single, electric energy service efficiency and message transmission rate are also lower.Such as, domestic certain company adopts pattern 1 and 4 to the subsurface equipment power supply, and employing pattern 2,3,5 and 6 is uploaded signal or the biography order down that subsurface equipment is gathered.But this mode is difficult to satisfy subsurface equipment to demand high-power, the multi-frequency power supply, can not satisfy the requirement of uploading a large amount of underground signals.As a certain logging system of domestic production, data transmission rate is 300KBPS.
External certain company was respectively at (patent No. US7 in 2003,154,412B), (patent No. US 6 in 2002,914,538 B2) and (patent No. US6 in 1999,469,636 B1) three patents have been obtained about high capacity power source logging method (High-Power Well Logging Method AndApparatus).Fig. 3 A～Fig. 3 C is the more advanced concrete mode that two kinds of power supplys are powered and telesignalisation is transmitted of the said firm.Fig. 3 A is the power supply and the signal transmission form of a certain system of the said firm.This mode can promptly adopt pattern M2 or M5 power supply simultaneously to two kinds of alternating currents of down-hole supply, adopts pattern M6 or M7 transmission telesignalisation.Fig. 3 B and Fig. 3 C are the power supply and the signal transmission forms of the another kind of logging system of the said firm.This mode can be supplied one road alternating current and one road direct current to the down-hole simultaneously; In addition, the shared channel transfer down-hole electric energy of this mode, upload and descend to pass telesignalisation, promptly adopt pattern 5.This logging system maximal uplink transfer rate has reached 800KBPS.But from the angle of efficient, the power supply and the signal transmission form of these systems all have much room for improvement.
In sum, how provide required power supply simultaneously a large amount of signals of down-hole quickly and reliably to be transferred to uphole equipment to subsurface equipment safely, become one of difficult problem that world's logging community faces.Power supply power supply of the present invention and signal transmission system propose for solving this difficult problem.
Summary of the invention
Subsurface equipment power supply power supply of the present invention and telesignalisation transmission system comprise: at least one alternating current transmission circuit, described alternating current is coupled to by power transformer or directly is transferred in the alternating current transmission circuit, then, provide AC power by described alternating current transmission circuit to subsurface equipment; At least one signal circuit, described signal by transformer coupled to or directly be transferred in this signal circuit, then, downgoing signal is transferred to subsurface equipment by this signal circuit, perhaps with uplink signal transmissions to uphole equipment; Logging cable, described logging cable are used for the signal transmission between uphole equipment and the subsurface equipment and are the subsurface equipment power supply; At least one cable socket circuit, described cable socket circuit is connected the logging cable two ends, forms at least one transmission circuit; With the direct current transmission circuit, when when the down-hole DC load is powered, another cable core of making a galvanic utmost point, described cable with a cable core or several cable core parallel connection of described cable or in addition several cable core parallel connections or outer armor as another utmost point of electric current.
The cable core of heptcable has been combined to form 7 kinds of transmission modes (pattern 1, pattern 2, mode 3, pattern 4, pattern 5, pattern 6 and mode 7) by different way, and described system can be with one or more mode transfer electric energy and telesignalisation.In the present invention, any transmission mode can be transmitted upward signal and/or downgoing signal and/or power supply.In various transmission modes, the resistance value minimum of pattern 1 and 6 two kinds of patterns of pattern, therefore, the most suitable downhole load electric energy transmitting of giving of M1 and M6.Mode 3 requires than higher the type of drive of signal, but because the resistance of M3 is less, so M3 also can electric energy transmitting.Mode 7 can supply the semaphore maximum of transmission, and the transmission data are fast, so the most suitable transmission signals of M7.The frequency band broad of pattern 5, it also can transmission signals.
Subsurface equipment power supply of the present invention power supply and telesignalisation transmission system can be with higher speed, transmit the data between subsurface equipment and the uphole equipment reliably, and required alternating current of subsurface equipment and direct current can be provided safer, effectively.
Description of drawings
Fig. 1 illustrates logging operation synoptic diagram of the present invention.
Fig. 2 (A) illustrates the structure sectional view of conventional heptcable; Fig. 2 (B) illustrates the transmission mode synoptic diagram of conventional heptcable.
Fig. 3 (A)～Fig. 3 (C) illustrates the concrete mode that two kinds of power supplys are powered and telesignalisation is transmitted of external certain company.
Fig. 4 illustrates the synoptic diagram of the heptcable transmission system of the high electric energy transmitting amount of the present invention's the 1st embodiment, high signal transmission rate.
Fig. 5 shows the derivation embodiment after having wiped out alternating current 2 transmission channels on the embodiment shown in Figure 4.
Fig. 6 shows the derivation embodiment after wiping out signal 2 transmission channels on the embodiment shown in Figure 4.
Fig. 7 shows the derivation embodiment after wiping out signal 1 transmission channel on the embodiment shown in Figure 4.
Fig. 8 shows the derivation embodiment after on the embodiment shown in Figure 4 the circuit of downhole end being made minor modifications.
Embodiment
Embodiment one
Fig. 4 is a specific embodiments of the present invention.This scheme can be transmitted two road alternating currents, one road direct current or one road low frequency electrode alternating current to subsurface equipment simultaneously.In addition, this scheme can also provide two road communication ports simultaneously.
The transmission system of this scheme is divided into ground and down-hole two parts.Two coils of the parallel connection that above ground portion comprises ground AC power 1, transformer T1, primary coil and two secondary coils, link to each other with each secondary coil, continuous cable core and corresponding circuit; Also comprise ground AC power 2, transformer T2, a primary coil and a secondary coil, the cable core that links to each other and corresponding circuit; Also have ground AC power 3, the cable core that links to each other and corresponding circuit; Also comprise ground direct supply, continuous cable core or outer armor and corresponding circuit; Also have terrestrial signal source 1, signal transformer T5, continuous cable core and corresponding circuit; Also have terrestrial signal source 2, signal transformer T7, primary coil and the electric capacity of a secondary coil, two series connection, the cable core that links to each other and corresponding circuit; And ground natural potential (SP) signal.
Down-hole part and above ground portion are symmetrical.Two coils of the parallel connection that the down-hole part comprises down-hole alternating current 1, transformer T2, two primary coils and a secondary coil, link to each other with each primary coil, continuous cable core and corresponding circuit; Also comprise down-hole alternating current 2, transformer T4, a primary coil and a secondary coil, the cable core that links to each other and corresponding circuit; Also have down-hole alternating current 3, the cable core that links to each other and corresponding circuit; Also comprise down-hole direct current, continuous cable core or outer armor and corresponding circuit; Also have downhole signal source 1, signal transformer T6, continuous cable core and corresponding circuit; Also have downhole signal source 2, signal transformer T8, primary coil and the electric capacity of a secondary coil, two series connection, the cable core that links to each other and corresponding circuit; And the simulating signal of down-hole spontaneous potential (SP) signal or other well logging (described primary coil and secondary coil be with respect to described system for the underground power supply used and transmission signals.If described system uploads underground signal, the call of so described primary coil and secondary coil should correspondingly change.But the call of primary coil and secondary coil should not have any impact to protection of the present invention and content.)。
Above ground portion and down-hole part couple together by heptcable.In this scheme, power supply power supply transmission mode can be M1 and/or M3 and/or M6, and the telesignalisation transmission mode can adopt M5 and/or M7.
The transmission mode of this scheme is specially:
The first, with mode 3 transmission alternating current 1, i.e. the alternating current transmission channel of cable core (1,3-5) and (4,2-6) two parallel connections of formation.Under the M3 pattern, the current ratio of distributing on the corresponding cable core is I
1: I
3: I
5: I
4: I
2: I
6=2 :-1 :-1 :-2: 1: 1.Alternating current 1 can be used as the main alternating current of subsurface equipment.Secondly, with pattern 6 transmission alternating currents 2, i.e. cable core (1-3-5) and (2-4-6) formation alternating current transmission channel.Under the M6 pattern, the current ratio of distributing on the corresponding cable core is I
1: I
3: I
5: I
4: I
2: I
6=1: 1: 1 :-1 :-1 :-1.Alternating current 2 can be used as the auxiliary alternating current of subsurface equipment.The 3rd, with pattern 1 transmission direct current or low frequency electrode alternating current, promptly the centre tap of T3 transformer (parallel connection of expression cable core 1,2,3,4,5,6) as galvanic positive pole, cable core 10 as galvanic negative pole.Cable core and outer armor by 6 parallel connections are powered to the down-hole DC load.In addition, when the cable core 1,2,3,4,5,6 of parallel connection and the earth formed circuit, described circuit can be to side direction class downhole logging instrument device transmission low frequency electrode current (alternating current 3).The 4th, pattern 5 (cable core 2-6,3-5) and mode 7 (cable core 7-10) as signal transmission passage.T5 and T6, T7 and T8 are two pairs of signal transformers.When described system transmissions downgoing signal, T5 and T7 are coupled to cable to down order from ground level transformer; At this moment, T6 and T8 are the receiving end of signal, and they are coupled to subsurface equipment to downgoing signal from cable.Opposite, when described system transmissions upstream data, T6, T8 are coupled to cable to the down-hole upward signal; And this moment, T5, T7 are coupled to ground receiving wastewater facility as receiving end and upward signal from cable.In this specific embodiment, the transmitting uplink data rate can surpass 1MBPS, and the downlink data transmission rate can surpass 100KBPS.
In this scheme, T1 and T2, T3 and T4 are two pairs of power transformer.Furtherly, transformer T1 and T3 are on ground, and transformer T2 and T4 are in the down-hole.Ground alternating current 1 is coupled to cable by T1, by T2 down-hole alternating current 1 is coupled to subsurface equipment from cable again; In like manner, ground alternating current 2 is coupled to cable by T2, by T4 down-hole alternating current 2 is coupled to subsurface equipment from cable again.The transmission channel of alternating current 3 is formed by the centre tap of ground level transformer T3, continuous cable core, centre tap and the earth of down-hole transformer T4.
Ground alternating current 2 and 3 is also can be obstructed transformer coupled and directly to be transferred to downhole cable, down-hole alternating current 2 and 3 also can be obstructed transformer coupled and directly be transferred to downhole load.Also can transmit ground alternating current 3 or direct current by cable conductor 7 and cable outer armor.
Simulating signal with cable core 7 transmission spontaneous potentials (SP) or other well loggings.
In this scheme, the passage that transmits main alternating current and auxiliary alternating current can exchange.In addition, the passage of transmission uplink and downlink signal also can exchange or merge or shared one of them or use two simultaneously.The passage that transmits main alternating current also can be used for transmitting direct current.This scheme can be expanded use according to the actual requirements, as powering for subsurface equipment with pattern 2 and/or pattern 4 and/or uploading signal and/or the biography ground order down that subsurface equipment is gathered.
In this scheme, the main ac frequency of transmission be several hertz to last KHz, general voter is with the alternating current of frequency (50 hertz or 60 hertz).Equally, auxiliary alternating current also can from several hertz to last KHz, also general voter is with the alternating current of frequency (50 hertz or 60 hertz).In actual applications, do not select the main alternating current and the auxiliary alternating current of same frequency for use.
Other embodiments
Simple modification specific embodiments shown in Figure 4 just can obtain multiple different derived scheme.The scheme of these derivations all belongs to content of the present invention.For example, on embodiment shown in Figure 4, the transmission channel of wiping out alternating current 2 obtains scheme shown in Figure 5; On embodiment shown in Figure 4, the transmission channel of wiping out signal 2 obtains scheme shown in Figure 6; On embodiment shown in Figure 4, the transmission channel of wiping out signal 1 obtains scheme shown in Figure 7.
Embodiment shown in Figure 4 is revised on simple unsubstantiality ground also can obtain multiple different derived scheme.The scheme of these derivations also all belongs to content of the present invention.For example, the circuit of the downhole end of minor modifications embodiment shown in Figure 4 obtains scheme shown in Figure 8.
In sum, one of distinguishing feature of the present invention is that three road alternating currents or while transmitting two paths alternating current and one road direct current can be transmitted simultaneously in described system.Described uplink and downlink telesignalisation can be transmitted jointly also and can separate, and promptly described system can provide two road communication ports simultaneously, but the signal that is transmitted can a shared passage can be not shared yet.In the present invention, the transmission of power supply supply and signal also can realize by the flexible combination of other pattern.
Two of distinguishing feature of the present invention is circuit design of described transmission system.In the above-described embodiment, ground AC power 1 is coupled on two secondary coils by the primary coil of transformer T1; One utmost point of a secondary coil is connected with cable core 4, and another utmost point of this secondary coil is connected with 6 with the cable core 2 of parallel connection, forms transmission circuit with the down-hole appropriate section then.This method for designing is original creation of the present invention.In like manner, a utmost point of another secondary coil links to each other with cable core 1, and another utmost point of this secondary coil is connected with 5 with the cable core 3 of parallel connection.
One utmost point of ground AC power 3 directly links to each other with the centre tap of the secondary coil of transformer T 3 or directly links to each other with two centre taps of two secondary coils of transformer T1, and another utmost point of power supply links to each other with the earth and forms circuit to circuit supply.Described alternating current 3 also can be by the circuit transmission of cable conductor 7 and outer armor formation.
When to down-hole DC load transmission direct current, in parallel as the galvanic utmost point of transmission with a cable core or several cable core of described cable, another cable core of described cable or other several cable core parallel connections or outer armor are as another utmost point of transmission current.For example, electric current can form circuit by 6 cable cores and outer armor.The virtual voltage situation is direct supply of stack on 6 cables.But consider the insulation voltage situation of cable, the DC voltage that promptly guarantees ground adds the maximum alternating current sum of transmitting on the upper ground surface cable core and is no more than the cable insulation restriction.
When described system transmissions electric energy, can select AC power 3 or direct current also is unique distinction of the present invention.
When the transmission telesignalisation, signal transformer T5 inputs or outputs modulation signal, signal transformer T6 output or input modulating signal.T5 and T6 can transmit descending and/or upstream data.Signal transformer T7 imports or goes out modulation signal, signal transformer T8 output or input modulating signal, and T7 and T8 also can transmit up and/or downlink data.Dividing two communication ports or using a passage to transmit two kinds of signals simultaneously separately also is notable feature of the present invention.
Claims (23)
1. a well logging subsurface equipment power supply is powered and the telesignalisation transmission system, and wherein, described transmission system comprises:
At least one alternating current transmission circuit, described alternating current by transformer coupled to or directly be transferred in the described alternating current transmission circuit, then, provide required alternating current for subsurface equipment by described alternating current transmission circuit;
At least one signal circuit, described signal by transformer coupled to or directly be transferred in the described signal circuit, then, downgoing signal is transferred to subsurface equipment by described signal circuit, perhaps with uplink signal transmissions to uphole equipment;
Logging cable, described logging cable are used to transmit the signal between uphole equipment and the subsurface equipment and are the subsurface equipment power supply;
At least one cable socket circuit, described cable socket circuit is connected described logging cable two ends, forms at least one transmission circuit; And
Direct current transmission circuit, described direct current transmission circuit with a cable core of described logging cable or several cable core parallel connection as the described galvanic utmost point of transmission, with another cable core of described cable or several cable core parallel connections or outer armor are that another utmost point of transmission current is powered to the down-hole DC load in addition.
2. survey as claimed in claim 1 and power supply of subsurface equipment power supply and telesignalisation transmission system is characterized in that:
The cable core of described cable or cable outer armor have common sparing as the part of one or more described transmission circuits between a described transmission circuit and another the described transmission circuit.
3. well logging subsurface equipment power supply power supply as claimed in claim 1 and telesignalisation transmission system is characterized in that:
The alternating current of described different frequency can be by different mode transfer, and same transmission mode can be used for electric energy transmitting and signal simultaneously.
4. well logging subsurface equipment power supply power supply as claimed in claim 1 and telesignalisation transmission system is characterized in that:
I.e. the 1st, the 2nd and the 3rd alternating current of described three road alternating currents can be transmitted to subsurface equipment simultaneously in described system, or transmits described two-way alternating current i.e. the 1st and the 2nd alternating current and described one road direct current simultaneously; In addition, the passage of transmission uplink and downlink signal also can exchange or merge or shared one of them or adopt two simultaneously.
5. as any described well logging subsurface equipment power supply power supply and telesignalisation transmission system in the claim 1～4, it is characterized in that:
Described cable is a heptcable, and the cable core of described heptcable is made up, and can form can transmission signals and the various modes of power supply, and promptly pattern 1～7.
6. well logging subsurface equipment power supply power supply as claimed in claim 5 and telesignalisation transmission system is characterized in that,
Comprise the 1st alternating current transmission circuit, ground AC power (1) is coupled on two secondary coils by the primary coil of described transformer T1, one utmost point of a secondary coil links to each other with a cable core (4), another utmost point of this secondary coil links to each other with two other cable core in parallel (2 and 6), thereby forms circuit with the down-hole part; One utmost point of another secondary coil links to each other with a cable core (1), and another utmost point of this secondary coil links to each other with two other cable core in parallel (3 and 5); Down-hole AC power (1) is coupled on the secondary coil by two primary coils of described transformer T 2, and two utmost points of a secondary coil link to each other with subsurface equipment respectively.
7. well logging subsurface equipment power supply power supply as claimed in claim 5 and telesignalisation transmission system is characterized in that:
Also comprise the 2nd alternating current transmission circuit, ground AC power (2) is coupled on the secondary coil by the primary coil of transformer T3, two utmost points of this secondary coil link to each other with centre tap on two secondary coils of ground power supply (1) respectively, the centre tap of this secondary coil extremely links to each other with one of ground AC power (3), described ground AC power (2) links to each other with two centre taps of two secondary coils of transformation T1, is the downhole cable power supply by described the 2nd alternating current transmission circuit; Described down-hole AC power (2) is coupled on the secondary coil by the primary coil of transformer T4, two utmost points by this secondary coil are powered to subsurface equipment, described down-hole AC power (2) links to each other with two centre taps of two secondary coils of transformer T2, powers to subsurface equipment by described the 2nd alternating current transmission circuit.
8. well logging subsurface equipment power supply power supply as claimed in claim 5 and telesignalisation transmission system is characterized in that:
Also comprise the 3rd alternating current transmission circuit, one utmost point of ground or down-hole AC power (3) links to each other with the centre tap of the secondary or primary coil of transformer T3 or T4 or links to each other with two two centre taps secondary or primary coil of transformer T1 or T2, and another utmost point of described AC power (3) links to each other with the earth and forms circuit to logging cable or subsurface equipment power supply;
Also can transmit described the 3rd alternating current by the cable core (7) of described cable and the circuit of described cable outer armor formation.
9. well logging subsurface equipment power supply power supply as claimed in claim 5 and telesignalisation transmission system is characterized in that:
In described direct current transmission circuit, 6 cable cores (1～6) and outer armor form transmission circuit, the DC voltage that i.e. direct supply of stack on 6 cables, described transmission circuit satisfy ground adds the maximum alternating current sum of transmitting on the upper ground surface cable core and is no more than the cable insulation restriction.
10. well logging subsurface equipment power supply power supply as claimed in claim 5 and telesignalisation transmission system is characterized in that:
In described various transmission modes, so the resistance value minimum of pattern 1 and pattern 6 is M1 and the most suitable transmission of M6 down-hole electric energy; Mode 3 is had relatively high expectations to the signal type of drive, and resistance is less, so M3 also can be as the power supply transmission; The mode 7 transmission band is the wideest, the most suitable transmission signals; Pattern 5 frequency band broads also are fit to transmission signals.
11. well logging subsurface equipment power supply power supply as claimed in claim 5 and telesignalisation transmission system is characterized in that:
Described system transmits the alternating current of a kind of frequency or multiple frequency or direct current, only transmits alternating current or only transmit direct current to subsurface equipment.
12. well logging subsurface equipment power supply power supply as claimed in claim 5 and telesignalisation transmission system is characterized in that:
Described transmission system is transmitted main alternating current and auxiliary alternating current to subsurface equipment, can be simultaneously to downhole transmitted direct current and low frequency ac; Described transmission system is carried out the communication of high data volume between down-hole and ground, and can transmission of analogue signal.
13. well logging subsurface equipment power supply power supply as claimed in claim 12 and telesignalisation transmission system is characterized in that:
The frequency of described main alternating current and auxiliary alternating current from several hertz to last KHz, and use the main alternating current and the auxiliary alternating current of different frequency.
14. well logging subsurface equipment power supply power supply as claimed in claim 13 and telesignalisation transmission system is characterized in that:
Described main alternating current and auxiliary alternating current frequency of utilization are generally the civilian alternating current of 50 hertz or 60 hertz.
15. well logging subsurface equipment power supply power supply as claimed in claim 12 and telesignalisation transmission system is characterized in that:
Mode 3 transmits described one road alternating current, and promptly cable core (1,3-5) and (4,2-6) form the alternating current transmission channel of two parallel connections, and under the M3 pattern, the current ratio of distributing on each cable core is I
1: I
3: I
5: I
4: I
2: I
6=2 :-1 :-1 :-2: 1: 1, described alternating current was as the main alternating current of subsurface equipment.
16. well logging subsurface equipment power supply power supply as claimed in claim 12 and telesignalisation transmission system is characterized in that:
Pattern 6 can be transmitted described another road alternating current, i.e. cable core (1-3-5) and (2-4-6) formation alternating current transmission channel, and under the M6 pattern, the current ratio of distributing on each cable core is I
1: I
3: I
5: I
4: I
2: I
6=1: 1: 1 :-1 :-1 :-1, described another road alternating current is as auxiliary alternating current.
17. well logging subsurface equipment power supply power supply as claimed in claim 12 and telesignalisation transmission system is characterized in that:
Pattern 1 described direct current of transmission or described low frequency electrode alternating current, be that cable core 1,2,3,4,5,6 parallel connections are as described galvanic positive pole, cable core 10 is as described galvanic negative pole, described transmission system is powered to the down-hole DC load by 6 cable cores and outer armor, when cable core 1,2,3,4,5,6 parallel connections form circuit with the earth, described transmission system is to the low frequency electrode current of subsurface equipment transmission well logging, promptly described the 3rd alternating current.
18. well logging subsurface equipment power supply power supply as claimed in claim 12 and telesignalisation transmission system is characterized in that:
Pattern 5 and mode 7 are as the passage of transmission signals, and described signal couples a signal to logging cable through transformer, through another transformer signal are coupled to receiving trap from logging cable again.
19. well logging subsurface equipment power supply power supply as claimed in claim 12 and telesignalisation transmission system is characterized in that:
Described main alternating current arrives transmission circuit by described transformer input and output; Described auxiliary alternating current, can directly not transmit by described transformer to described transmission circuit by described transformer input and output yet; Described direct current directly is linked into transmission circuit; The uplink and downlink signal, can directly not transmit by described transformer to described transmission circuit by described signal transformer input and output yet.
20. well logging subsurface equipment power supply power supply as claimed in claim 12 and telesignalisation transmission system is characterized in that:
Described cable core (7) is used to transmit the simulating signal of spontaneous potential SP or other well loggings.
21. well logging subsurface equipment power supply power supply as claimed in claim 12 and telesignalisation transmission system is characterized in that:
The transmission channel of described main alternating current and auxiliary alternating current can be exchanged; The transmission channel of uplink and downlink signal also can exchange or merge or shared one of them or adopt two simultaneously.
22. well logging subsurface equipment power supply power supply as claimed in claim 12 and telesignalisation transmission system is characterized in that:
Described alternating current transmission channel also can be used in the described direct current of transmission, and can expand the use pattern, promptly with pattern 2 and/or pattern 4 for the subsurface equipment power supply and/or upload signal that subsurface equipment gathers or/and the ground order of following biography.
23. well logging subsurface equipment power supply power supply as claimed in claim 18 and telesignalisation transmission system is characterized in that:
When the transmission telesignalisation, described signal transformer is used to input or output modulation signal and the descending and/or upstream data of transmission; Use a pair of transmission simultaneously of signal transformer T5, T6 and signal transformer T7, T8 or two pairs to transmit up and/or downlink data simultaneously respectively.
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| CN2008100096649A CN101515039B (en) | 2008-02-19 | 2008-02-19 | Underground power supply and signal transmission system |
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| CN2008100096649A CN101515039B (en) | 2008-02-19 | 2008-02-19 | Underground power supply and signal transmission system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Family Cites Families (4)
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