CN101201002B - Long-range single-cord well logging bus control system - Google Patents
Long-range single-cord well logging bus control system Download PDFInfo
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- CN101201002B CN101201002B CN2006101652050A CN200610165205A CN101201002B CN 101201002 B CN101201002 B CN 101201002B CN 2006101652050 A CN2006101652050 A CN 2006101652050A CN 200610165205 A CN200610165205 A CN 200610165205A CN 101201002 B CN101201002 B CN 101201002B
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Abstract
The invention provides a bus control system used in long-distance single-core oil well logging, comprising a computer, an above-ground control box , a single core cable, a first and a second mode switches, a first and a second relays, a CPU unit, a bus control unit, a low voltage power source and a first and a second relay control units. The computer is connected with the above-ground control box via a lead; a communication unit, the CPU unit, the bus control unit, and the low voltage power source underground are connected in series by leads, and are connected in parallel with the first and the second relay control units, the two parts connected in parallel are respectively connected with the first and the second relays, and the first relay is connected with the first mode switch, and the second relay is connected with the second mode switch; the above-ground control box is connected with the first mode switch via the single core cable; the second mode switch is connected with the well logging apparatus via a lead to supply power to the apparatus. The control system adopts a single core cable to provide long distance power supply and communication for well logging, satisfies the practical needs of combined well logging by multiple apparatuses under the conditions of great voltage differences in horizontal wells.
Description
Technical field:
The present invention relates to a kind of electric power supply control system that is used for the combination of oil well logging high and low pressure DC equipment.
Background technology:
At present, the combination logging mode is adopted in oil reservoir logging mostly, and for single core direct current supply logging system, the working method to all appts power supply is generally taked simultaneously in the multiple instruments combination logging.This kind power supply mode is very suitable when close for each instrument operating voltage, but when adopting each instrument operating voltage to differ big at horizontal wellbore logging, then can't realize the logger combination that multiple operating voltage is different.In the time of can't realizing the multiple instruments combination, take part instrument powered operation, the power supply of another part instrument main circuit to disconnect the mode that takes turns to operate of dormancy usually.At present and since be used for this kind take turns to operate the control circuit of mode aging, fall behind, thereby its concentration degree is not high, fault rate is higher, influences normally carrying out of logging operation.
Summary of the invention:
The object of the invention be to provide a kind of adopt advanced circuit, circuit control model simple, can realize that high-voltage direct-current equipment and low-voltage DC equipment are used in combination and can be by powering select target equipment work and the long-range single-cord well logging bus control system of other equipment main circuits and bus disconnection dormancy.Technical solution of the present invention is as follows:
This kind well logging bus control system is made up of above ground portion, single-core cable and down-hole part, wherein, above ground portion comprises computer and Ground Control case, the down-hole part is made of first, second mode switch, first, second relay, low-tension supply, communication unit, first, second relay control unit, CPU element and bus control unit, is connected by single-core cable between above ground portion and the down-hole part.The above ground portion computer is connected with the Ground Control case by lead; The communication unit of down-hole part, CPU element, bus control unit, low-voltage control power are in series by lead, and be in parallel with first, second relay control unit, two parts in parallel are connected first relay and first, second mode switch K respectively with two first, second relays
1Be connected first relay and the second mode switch K
2Be connected; The Ground Control case is by the single-core cable and the first mode switch K
1Be connected K switch
2Being connected with logger by lead is that logger is powered.This system, control circuit comprises mode control module, mode standard power supply control module, first, second relay control module of first, second relay mode and first, second relay mode wake-up voltage scope control section.This system can adopt first, second relay mode and two kinds of pattern work of mode standard, and instrument is gone into the well and configured mode of operation earlier before the work, as works in first, second relay mode and also need set and wake up power supply voltage range and power supply retention time.Now that two kinds of mode of operations, course of work division are as follows:
First, second relay mode:
The first mode switch K1, the second mode switch K2 are placed the REL position, and then circuit working is in first, second relay mode.The power supply beginning, RL1 disconnects, and this equipment main circuit is not powered, so do not work, low-tension supply is not worked yet.Adjusting the Ground Control case powers to first, second control relay circuit of down-hole part by single-core cable.Supply voltage is if keep the regular hour (greater than setting-up time) in the voltage range that circuit is set, then first, second control relay circuit is with the RL1 adhesive, main circuit begins power supply, low-tension supply is also just started working, this equipment is realized waking up, low-tension supply disconnects RL2, and ground power supply can't be to next power devices; If supply voltage is the voltage range that quick high oversampling circuit is set, promptly time that this scope keeps less than setting-up time, then first, second control relay circuit can not be with the RL1 adhesive, main circuit does not have power supply, so this equipment is in the dormancy state of repairing.Low-tension supply is not worked yet, and RL2 is normally closed, and ground power supply is to next power devices.
Mode standard:
The first mode switch K1, the second mode switch K2 are placed the STD position, and then circuit working is in mode standard, and all circuit of this equipment are under the powered operation state all the time under this pattern.During the power supply beginning, equipment is started working, and the bus electronic switch that bus control unit will down be powered disconnects, and constantly receives the ground-based computer instruction.If confiscate the instruction to next power devices, then this equipment is in wake-up states, operate as normal; If receive to the instruction of next power devices and then the bus electronic switch is opened, to next power devices, this equipment is forbidden communication unit simultaneously, no longer receives any instruction, is in resting state, just can wake up up to powering again.
The present invention adopts single-core cable to realize logging equipment remote power-feeding and communication, cooperation by control of ground supply voltage scope, time and downhole modes control circuit realizes that to a certain designated equipment in single core and the many equipment that connect power supply wakes up, thereby the combination timesharing is used when realizing the high and low pressure DC installation, can satisfy the actual needs that operating voltage such as horizontal well differs multiple instruments combination logging under the big situation.
Description of drawings:
Fig. 1 is a general structure block diagram of the present invention.Fig. 2 is the power-supplying circuit figure of this system that is used for horizontal well casing pipe well tractor.
The specific embodiment:
The present invention is provided by following examples, is illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention is by computer 1, Ground Control case 2, single-core cable 3, first mode switch, 4 (K
1), second mode switch, 9 (K
2), first relay 5, second relay 12, communication unit 6, CPU element 7, bus control unit 8, low-tension supply 10, first, second relay control unit 11 form, its annexation is as follows: computer 1 is connected with Ground Control case 2 by lead; Communication unit 6, CPU element 7, bus control unit 8, low-voltage control power 10 are in series by lead, and be in parallel with first, second relay control unit 11, two parts in parallel are connected with first relay 5, second relay 12 respectively, first relay 5, second relay 12 respectively with first mode switch, 4 (K
1) and second mode switch, 9 (K
2) be connected; Ground Control case 2 is by single-core cable 3 and first mode switch, 4 (K
1) be connected second mode switch, 9 (K
2) being connected with logger by lead is each instrument power supply.
As shown in Figure 2, this system circuit of being used for the power supply control of horizontal well casing pipe well tractor comprises mode control module, mode standard power supply control module, first, second relay control module of first, second relay mode and first, second relay mode wake-up voltage scope control section.Among the figure, the K-switch, first, second relay of RL-, the D-diode, the Q-triode, the T-transformer, U-concentrates piece, R-resistance, LINE-single-core cable, PL-Other Instruments, GND-ground wire.Wherein, pattern control adopts wire jumper to be provided with in the mode control module, mode control switch LK7, LK6, LK4 place the REL position, circuit working is in first, second relay mode, when LK7, LK6, LK4 place the STD position, circuit working is in mode standard, and the PL end is other instrument power supply outputs.
When being operated in first, second relay mode, wake-up voltage control is provided with by LK2, LK3 wire jumper, and compound mode sees the following form:
| LK3 | LK2 | The wake-up voltage scope |
| OFF | LOW | 15V～30V |
| OFF | HIGH | 30V～50V |
When the combined instrument operating voltage is lower than 30V, LK3 must be placed ON, LK2 places HIGH.
Mode standard power supply control module mode standard power supply control section be a circuit in the frame of broken lines among Fig. 2, and wherein integrated package U1 constitutes square wave generation circuit, the output of master control module controls square wave, and high level allows square wave output, and low level forbids that square wave exports.The output square wave amplifies rear drive pulse transformer T1 through triode Q1 electric current, gives the power supply of outside PL end through T1 isolation drive MOSFET.
The horizontal well casing pipe borehole logging tool tractor power supply control course of work is as follows:
1, mode standard power supply process
When each switch is arranged on mode standard is K1, K2 when placing the STD position respectively, and power supply adds from single-core cable LINE end because LK4 places the STD shelves, this moment each first, second relay R L control coil no current, so first, second relay is not worked.LK7 places the STD shelves, and LINE holds to the low-tension supply power supply by CH, the tractor powered operation, and the communication module operate as normal, governor circuit resets, the square-wave oscillator circuit no-output, Q4 is cut off, and the PL end does not have power supply output.If need to give other instrument power supplies, then send out control instruction to tractor by ground-based computer, by main control module conducting Q4, turn-off communication module simultaneously, tractor is repaiied dormancy.
2, first, second relay mode power supply process
2.1 wake tractor up
When K switch 1, when K4 places the REL position, power supply adds from the LINE end, supposes that LK2 places the HIGH position, and LK3 places the OFF position, LK1 places the ON position, supply power to 30V～50V earlier, this moment, Q2 ended, and C5 begins charging, C5 voltage constantly rises, after about 7 seconds, the Q7 conducting, thus make Q3, Q8 is conducting also, Q8 gives first by D10, the power supply of the second relay R L1 control coil, the adhesive of RL1 contact, LINE holds to the low-tension supply power supply by CH, and low-tension supply is started working, tractor is waken up, RL2, the RL3 control coil begins power supply, RL2, the RL3 contact disconnects, and PL holds no-output.After tractor is waken up, continue the rising supply voltage greater than 50V, Q2 conducting this moment, the last current potential of C4 is dragged down, and Q3, Q7, Q8 end, the D10 no-output, this moment, the RL1 control coil was powered by low-tension supply, and tractor enters normal operating conditions.
2.2, to combined instrument power supply tractor dormancy simultaneously
Power supply adds from the LINE end, suppose that LK2 places the HIGH position, LK3 places the OFF position, and LK1 places the ON position, supply power to more than the 50V fast, Q2 conducting, C5 charging voltage also are less than the Q7 conducting are promptly dragged down by D12, so Q3, Q7, Q8 end, first, second relay R L1 control coil is power supply not, low-tension supply is not just worked yet, the tractor dormancy, and the LINE power supply adds to the PL end by first, second relay R L2, RL3.
Claims (1)
1. long-range single-cord well logging bus control system, be made up of computer (1), Ground Control case (2), single-core cable (3), first mode switch (4), second mode switch (9), first relay (5), second relay (12), communication unit (6), CPU element (7), bus control unit (8), low-tension supply (10), relay control unit (11), it is characterized in that: computer (1) is connected with Ground Control case (2) by lead; The communication unit of down-hole part (6), CPU element (7), bus control unit (8), low-voltage control power (10) are in series by lead, and be in parallel with relay control unit (11), two parts in parallel are connected with first relay (5), second relay (12) respectively, first relay (5) is connected with first mode switch (4), and second relay (12) is connected with second mode switch (9); Ground Control case (2) is connected with first mode switch (4) by single-core cable (3), and second mode switch (9) is connected with logger by lead and is the logger power supply; Its bulk supply control circuit comprises mode control module, mode standard power supply control module, relay mode relay control module and relay mode wake-up voltage scope control section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101652050A CN101201002B (en) | 2006-12-14 | 2006-12-14 | Long-range single-cord well logging bus control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101652050A CN101201002B (en) | 2006-12-14 | 2006-12-14 | Long-range single-cord well logging bus control system |
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| Publication Number | Publication Date |
|---|---|
| CN101201002A CN101201002A (en) | 2008-06-18 |
| CN101201002B true CN101201002B (en) | 2011-06-22 |
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| CN2006101652050A Active CN101201002B (en) | 2006-12-14 | 2006-12-14 | Long-range single-cord well logging bus control system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0028296A2 (en) * | 1979-10-31 | 1981-05-13 | Licentia Patent-Verwaltungs-GmbH | Arrangement for power-supply and measurement-data transmission from a central station to several measurement posts |
| EP0220047A2 (en) * | 1985-10-18 | 1987-04-29 | Brown Electronics Limited | Borehole logging equipment |
| CN2282067Y (en) * | 1996-11-11 | 1998-05-20 | 西安雷德电子仪器有限公司 | Multiple parameter water absorption section downhole instrument for logging |
| CN2387266Y (en) * | 1999-04-16 | 2000-07-12 | 大庆石油管理局生产测井研究所 | Single core ring air logging instrument |
-
2006
- 2006-12-14 CN CN2006101652050A patent/CN101201002B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0028296A2 (en) * | 1979-10-31 | 1981-05-13 | Licentia Patent-Verwaltungs-GmbH | Arrangement for power-supply and measurement-data transmission from a central station to several measurement posts |
| EP0220047A2 (en) * | 1985-10-18 | 1987-04-29 | Brown Electronics Limited | Borehole logging equipment |
| CN2282067Y (en) * | 1996-11-11 | 1998-05-20 | 西安雷德电子仪器有限公司 | Multiple parameter water absorption section downhole instrument for logging |
| CN2387266Y (en) * | 1999-04-16 | 2000-07-12 | 大庆石油管理局生产测井研究所 | Single core ring air logging instrument |
Non-Patent Citations (2)
| Title |
|---|
| 宋金城.78-2型单芯电缆生产测井仪.《测井技术》.1981,第1卷(第5期),50. * |
| 秦伟.单芯电缆数据采集及传输***设计.《中国优秀硕士学位论文全文数据库》.2003, * |
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|---|---|
| CN101201002A (en) | 2008-06-18 |
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