CN201196088Y - High-speed data transmission apparatus used for petroleum logging - Google Patents
High-speed data transmission apparatus used for petroleum logging Download PDFInfo
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- CN201196088Y CN201196088Y CNU2008200806766U CN200820080676U CN201196088Y CN 201196088 Y CN201196088 Y CN 201196088Y CN U2008200806766 U CNU2008200806766 U CN U2008200806766U CN 200820080676 U CN200820080676 U CN 200820080676U CN 201196088 Y CN201196088 Y CN 201196088Y
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Abstract
The utility model discloses a high speed data transmission device for oil well logging, comprising a ground part and an underground part, wherein the ground part comprises a ground terminal, a ground terminal interface, a ground encode orthogonal frequency division multiplex COFDM modem and a ground cable interface which are connected in turn, the underground part comprises an underground instrument, an underground instrument interface, an underground COFDM modem and an underground cable interface which are connected in turn, and the ground cable interface is connected with the underground cable interface via an oil well logging cable. The high speed data transmission device can improve data transmission bit rate of oil well logging cables.
Description
Technical field
The utility model relates to a kind of petroleum well logging technology, specifically, relates to a kind of high speed data transfer device that is used for oil well logging.
Background technology
General logging system comprises ground installation and downhole instrument, data communication between downhole instrument and the ground installation adopts cable as transmission medium usually, down-hole one end of cable connects the various instruments in down-hole, and the cable other end (being ground one end) connects the various device on ground.In logging system, downhole instrument is mainly used in various data parameters and the signal of measuring the stratum, as the mud resistivity on stratum, under-mine TV imaging signal etc., along with the modern times requirement of well logging more and more higher, need the various contents on the stratum surveyed to get more and more; Ground installation is mainly used in work such as the various signals on the stratum that will receive are stored, analyzed, printing, to obtain the feature on this stratum.Downhole instrument need be transferred to ground installation by logging cable with the data that collect, simultaneously ground installation also can send number order or data by logging cable and removes to control downhole instrument and finish corresponding work, for this reason, a transmitting device must arranged to realize the data communication between downhole instrument and the ground installation between downhole instrument and the ground installation, the down-hole part of this transmitting device also needs to provide some interfaces to be used for and being connected of each instrument of down-hole simultaneously.
A large amount of research is being done aspect the well logging transmission by offshore company, and the sixties adopted analogue modulation systems such as frequency modulation, amplitude modulation to transmit a spot of data in the past basically.For example, it is 3502 PCM (Pulse Code Modulation, pulse code modulation) modulator that Atlas company is developed into code name mid-term in the eighties, and transfer rate only is 7.5kbps.Afterwards, the modulation-demodulation technique of the said firm begins to adopt the Manchester's code mode, and transfer rate is brought up to 93.35kbps (model is WTC3510).Schlumberger company adopts phase-shift keying (PSK) (Phase Shift Keying is called for short PSK) modulation system transmission data always.The eighties was developed the Digital Transmission pipe nipple of CCS and two kinds of models of CTS before mid-term, and wherein the transfer rate of CCS is 80kbps, and the transfer rate of CTS is 100kbps.CCS and CTS all adopt BPSK (Binary Phase Shift Keying, binary phase shift keying) modulation technique.The early 1990s is developed the Imaging Logging System that model is MAX-500, and on behalf of its spread of the rumours system data uplink speed, " 500 " in " MAX-500 " can reach 500kb/s.The spread of the rumours system of Schlumberger company is called DTS numeral the spread of the rumours system, adopt QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation) technology can reach the message transmission rate of 500kbps, can satisfy the needs that the transmission of instrument information content is surveyed in imaging basically.In the Imaging Logging System EXCELL-2000 that Halliburton Company releases, its spread of the rumours system (model is DITS) adopts the binary code transmission of modulation, and uploading rate is 217.6kbps.The model that Bake-Atlas company releases is in the Imaging Logging System of ECLIPS-2000, and its spread of the rumours system (model is WTC) adopts the Manchester code transmission, and uploading rate is 230kbps.Along with the requirement that the modern times log well is more and more higher, it is more and more to need to survey content, and the transmission code rate of present logging system can't reach requirement.
In addition, existing downhole instrument external interface is not quite identical, downhole instrument as the logging system of Halliburton Company mainly adopts the mode of the coaxial cable of Ethernet to connect, and the Imaging Logging System that Bake-Atlas company releases mainly adopts the mode of 1553 buses to connect.Different downhole instrument interfaces causes and can't carry out interconnectedly in a kind of transmission cable, makes troubles for actual work.
The utility model content
The technical problems to be solved in the utility model provides a kind of high speed data transfer device that is used for oil well logging, can increase substantially the transfer of data code check on logging cable.
In order to address the above problem, the utility model provides a kind of high speed data transfer device that is used for oil well logging, comprise: above ground portion and down-hole part, each structure of described above ground portion is connected successively, comprising: ground based terminal, ground based terminal interface, ground coded orthogonal frequency division multiplexing COFDM modem, ground cable interface; Described down-hole each structure of part is connected successively, comprising: downhole instrument, downhole instrument interface, down-hole COFDM modem, down-hole cable interface; Described ground cable interface is connected by logging cable with the down-hole cable interface.
Preferably, described ground COFDM modem comprises: ground COFDM modulator and ground COFDM demodulator; Described down-hole COFDM modem comprises: down-hole COFDM modulator and down-hole COFDM demodulator.
Preferably, described downhole instrument interface comprises: ethernet interface circuit module, 1553 bus interface circuit modules, CAN bus interface circuit module or analogue signal circuit modular converter; And, PLD, digital signal processor DSP, downhole instrument interface end nonvolatile memory Flash and SRAM SRAM; Described ethernet interface circuit module, 1553 bus interface circuit modules, controller local area network CAN bus interface circuit module or analogue signal circuit modular converter are connected with described PLD, and described DSP is connected with down-hole COFDM modem with described PLD, downhole instrument interface end Flash and SRAM SRAM respectively.
Preferably, the data of described downhole instrument interface collection are transferred to PLD by described 1553 bus interface circuit modules, CAN bus interface circuit module or analogue signal circuit modular converter, and described DSP is delivered in described PLD packing.
Preferably, adopt the mode of ICP/IP protocol to transmit data between described downhole instrument interface and the ground based terminal interface; Described down-hole part adopts the mode of ICP/IP protocol that the transfer of data that collects is returned described above ground portion, and described above ground portion adopts the mode of ICP/IP protocol to send order to the down-hole part.
Preferably, described down-hole COFDM modulator comprises: down-hole modulated terminal DSP, down-hole modulated terminal Flash, modulated terminal data converter, digital to analog converter, modulated terminal programmable gain amplifier PGA, down-hole modulated terminal wave filter, modulated terminal PGA control circuit; Described down-hole modulated terminal DSP receives the data of downhole instrument collection to carry out being sent to described modulated terminal data converter after the COFDM modulation, described modulated terminal data converter is delivered to described digital to analog converter according to the sample frequency of described digital to analog converter with described data, described digital to analog converter carries out exporting analog signal after the digital to analog conversion, described analog signal amplifies and exports to the down-hole modulated terminal wave filter of described down-hole cable interface by described modulated terminal PGA under the control of described down-hole modulated terminal DSP and modulated terminal PGA control circuit, deliver to the modulation signal drive circuit of described down-hole cable interface behind the modulated terminal filter filtering of described down-hole, described modulation signal drive circuit is delivered to described logging cable after overdriving.
Preferably, the down-hole cable interface of described down-hole part comprises: modulation signal drive circuit and down-hole transformer are connected with build-out resistor between described modulation signal drive circuit and the down-hole transformer; Described modulation signal drive circuit is connected with described down-hole modulated terminal wave filter.
Preferably, described down-hole COFDM demodulator comprises: down-hole demodulating end digital signal processor DSP, down-hole demodulating end Flash, demodulating end data converter, analog-digital converter, demodulating end PGA, down-hole demodulating end wave filter, demodulating end PGA control circuit, suppress the circuit module of down-hole modulated terminal signal; The circuit module that outputs signal to described logging cable and inhibition down-hole modulated terminal signal of described down-hole cable interface, deliver to described down-hole demodulating end wave filter after the signal that the circuit module of described inhibition down-hole modulated terminal signal exports logging cable to described COFDM modulator suppresses and carry out filtering, filtered signal is delivered to described demodulating end PGA, described demodulating end PGA amplifies filtered signal under the control of described down-hole demodulating end DSP and demodulating end PGA control circuit, carry out analog to digital conversion through delivering to described analog-digital converter after the described demodulating end PGA amplification, under the control of described demodulating end data converter the data signal after the described analog-digital converter conversion delivered to described down-hole demodulating end DSP, the signal of described down-hole demodulating end DSP after with the COFDM demodulation delivered to described downhole instrument interface.
Preferably, the sample frequency of the analog-digital converter in the sample frequency of the digital to analog converter in the COFDM modulator of described down-hole and the described down-hole COFDM demodulator is identical.
Preferably, described logging cable adopts armouring Camesa logging cable.
The utility model can increase substantially the transfer of data code check on existing logging cable, to satisfy the big data quantity transmission requirement of downhole instrument, for example, on 7000 meters armouring Camesa logging cables, can reach the transfer rate more than the 800kbps, can be connected with the downhole instrument of distinct interface at an easy rate simultaneously.
Description of drawings
Fig. 1 is the general structure block diagram that is used for the high speed data transfer device of oil well logging in the utility model;
Fig. 2 is the internal construction block diagram of downhole instrument interface in the utility model;
Fig. 3 is that the content of COFDM modulator A, COFDM demodulator A and down-hole cable interface in the utility model realizes block diagram.
The specific embodiment
With reference to the accompanying drawings, technical solutions of the utility model are elaborated.
As shown in Figure 1, the general structure block diagram that is used for the high speed data transfer device of oil well logging, the high speed data transfer device that is used for oil well logging comprises above ground portion and down-hole part, above ground portion is connected by logging cable 106 with the down-hole part, wherein, each structure of above ground portion is connected successively, above ground portion comprises: ground based terminal 101, ground based terminal interface 102, COFDM (Coded Orthogonal FrequencyDivision Multiplexing, coded orthogonal frequency division multiplexing) modulator B103, COFDM demodulator B104, ground cable interface 105; Part each structure in down-hole is connected successively, and the down-hole part comprises: downhole instrument 111, downhole instrument interface 110, COFDM modulator A109, COFDM demodulator A108, down-hole cable interface 107.
Ground based terminal 101 links to each other with COFDM demodulator B104 with COFDM modulator B103 by ground based terminal interface 102, transmits and receive data.Wherein, COFDM modulator B103 receives data to be sent from ground based terminal interface 102, and the modulation back is carried on by land cable interface 105 and is sent to the down-hole part on the logging cable 106.COFDM demodulator B104 is carried on data on the logging cable 106 by land cable interface 105 received well lower parts, sends to ground based terminal 101 through after the demodulation by ground based terminal interface 102.
COFDM modulator B103 and COFDM demodulator B104 can directly carry out data interaction, COFDM modulator B103 and COFDM demodulator B104 merging can be called COFDM modem B.
The down-hole part links to each other with COFDM demodulator A108 with COFDM modulator A109 by downhole instrument interface 110, transmits and receive data.Wherein, COFDM modulator A109 receives data to be sent from downhole instrument interface 110, and the modulation back is carried on the logging cable 106 by downhole cable interface 107 and is sent to above ground portion; COFDM demodulator A108 receives above ground portions by downhole cable interface 107 and is carried on data on the logging cable 106, sends to downhole instrument 111 through after the demodulation by downhole instrument interface 110.
Equally, COFDM modulator A109 and COFDM demodulator A108 can directly carry out data interaction, also COFDM modulator A109 and COFDM demodulator A108 merging can be called COFDM modem A.
With 7000 meters armouring logging cables is example, can determine following OFDM basic parameter according to the transmission characteristic of cable channel:
(1) subchannel at interval: 1.220703125kHz.
(2) subchannel sum and FFT handle and count: 256; Beginning number consecutively from DC component is 0,1 ..., 255.
(3) available subchannels sum: 202, wherein, the available subchannels sum that up channel (Up Link, the down-hole is to ground) comprises: 195;
(4) the available subchannels sum that comprises of down channel (Down Link, ground is to the down-hole): 7.
(5) significant character time: 819.2us
(6) protection blanking time: 204.8us (that is: 1/4 of the OFDM symbol lengths)
(7) FFT handles bandwidth: 312.5kHz.
On this armouring logging cable, carry out channel distribution according to above-mentioned OFDM basic parameter, wherein, subcarrier 0～subcarrier 5 is as keeping subcarrier (not using), and the reason of not using subcarrier 0～subcarrier 5 is to avoid the Alternating Current Power Supply of low frequency end to disturb; Subcarrier 6～subcarrier 12 is as down channel (ground surface end equipment is to downhole end equipment); Subcarrier 13～subcarrier 26 plays the effect with down channel and up channel isolation as keeping subcarrier (not using); Subcarrier 27～subcarrier 221 is as up channel (downhole end equipment is to ground surface end equipment); Wherein, subcarrier 36 is a pilot subchannel, and all the other are the uplink service subchannel.The pilot signal of transmitting on the pilot subchannel is a sine wave, and it is synchronous to be used for carrying out between transmitting terminal and the receiving terminal clock.
Data transmission method is divided into: channel initialization stage and data transfer phase.Need finish in the channel initialization stage: communication link foundation, transmission power control, reception AGC parameter, clock synchronously, operations such as sign synchronization, frame synchronization, time-domain equalizer training, frequency domain equalizer training, subchannel performance estimation, subchannel Bit Allocation in Discrete and energy distribution.
As shown in Figure 2, be the internal construction block diagram of downhole instrument interface 110, the downhole instrument interface 110 of down-hole part comprises: ethernet interface circuit module 201,1553 bus interface circuit modules 202, CAN bus interface circuit module 203, analogue signal circuit modular converter 204, PLD 205, be used for DSP (digital signal processor) 206, downhole instrument interface end Flash207 and the SRAM (SRAM) 208 of downhole interface control.
Adopt the mode of ICP/IP protocol to transmit data between the ground based terminal interface 102 of downhole instrument interface 110 and above ground portion, the down-hole part adopts the mode of ICP/IP protocol that the transfer of data of gathering is returned above ground portion, and above ground portion adopts the mode of ICP/IP protocol to send order to the down-hole part.
Ethernet interface circuit module 201,1553 bus interface circuit modules 202, CAN bus interface circuit module 203, analogue signal circuit modular converter 204 are for adapting to four kinds of interface modes of downhole instrument 111 in the downhole instrument interface 110.Wherein, ethernet interface circuit module 201 can be directly be connected with the downhole instrument 111 of the Ethernet interface of supporting to meet the 10Base2 standard, 1553 bus interface circuit modules 202 can directly be connected with supporting the downhole instrument 111 that meets 1553 bus standards, CAN bus interface circuit module 203 can directly and be supported CAN (Controller Area Network, controller local area network) downhole instrument 111 of bus standard connects, and analogue signal circuit modular converter 204 can be connected with the downhole instrument 111 of output peak-to-peak value less than ± 10 volts analog signal.By 1553 bus interface circuit modules 202, CAN bus interface circuit module 203, analogue signal circuit modular converter 204 interface modes transmit the data of downhole instrument interface 110 collections to PLD 205, difference according to interface mode in PLD 205 is packed, and deliver to the DSP206 that is used for downhole interface control, downhole instrument interface end Flash207 is used for the program of the DSP206 of storage well lower interface control, and the DSP206 that SDRAM208 is used for data that various downhole instruments 111 that the DSP206 of buffer memory downhole interface control receives gather and the control of service well lower interface carries out ICP/IP protocol to be handled.
As shown in Figure 3, be that the content of COFDM modulator A, COFDM demodulator A and down-hole cable interface in the utility model realizes block diagram.Down-hole partial C OFDM modulator A109 comprises: down-hole modulated terminal DSP301, down-hole modulated terminal Flash (nonvolatile memory) 302, modulated terminal data converter 303, D/A converter 304, modulated terminal PGA (programmable gain amplifier) 305, down-hole modulated terminal wave filter 306, modulated terminal PGA control circuit 307; Down-hole partial C ofdm demodulator A108 comprises: the circuit module 318 of down-hole demodulating end DSP311, down-hole demodulating end Flash312, demodulating end data converter 313, A/D converter 314, demodulating end PGA315, down-hole demodulating end wave filter 316, demodulating end PGA (programmable gain amplifier) control circuit 317, inhibition down-hole modulated terminal signal; The down-hole cable interface 107 of down-hole part comprises: modulation signal drive circuit 308 and down-hole transformer 319 are connected with build-out resistor 309 and build-out resistor 310 between modulation signal drive circuit 308 and down-hole transformer 319.
COFDM modulator B103, the COFDM demodulator B104 of above ground portion and down-hole partial C OFDM modulator A109, COFDM demodulator A108 finally connect and compose a loop by logging cable 106.
Be used for DSP206, the down-hole modulated terminal DSP301 of downhole interface control, the dsp chip SM320C6415 that down-hole demodulating end DSP311 all can select TI company for use, PLD 205, modulated terminal data converter 303 and demodulation end data converter 313 all can select for use the EP1C6T144I7 of altera corp to realize, modulated terminal PGA305 and demodulating end PGA315 all can select the chip AD603SQ/883B of Analog company for use, D/A converter 304 can be selected the DAC5672MPFBEP of TI company for use, and A/D converter 314 can be selected the THS1408MPHPEP of TI company for use.The dsp chip SM320C6415 of TI company is the digital signal processor of a high performance fixed point, the operating frequency maximum can be supported 720MHz, it provides one 64 EMIFA (external memory interface), one 16 EMIFB interface, three multichannel buffer serial line interfaces (McBSP interface), support 32-bit/33MHz, the master/slave interface of the PCI of 3.3V, compatible with PCI 2.2 standards.In the utility model, down-hole modulated terminal DSP301, down-hole demodulating end DSP311 and the DSP206 that is used for downhole interface control all realize interconnected by the McBSP interface of SM320C6415 chip, be used for being connected also and can connecting by the McBSP interface between DSP206 that downhole interface controls and the PLD 205 simultaneously.PLD 205 itself does not have the McBSP interface, but because PLD 205 adopts PLD, so can realize the function of McBSP interface easily.Down-hole modulated terminal DSP301 and modulated terminal data converter 303, down-hole demodulating end DSP311 and demodulating end data converter 313 and the DSP206 that is used for downhole interface control all can be connected by the EMIFB interface of SM320C6415 chip with ethernet interface circuit module 201, and are used for can being connected by the EMIFA interface between DSP206 that downhole interface controls and the SRAM208.All Flash that select for use in order to store the DSP program all are connected on the EMIFB interface of corresponding DSP.The EMIFA interface that modulated terminal PGA305 and demodulating end PGA315 all can utilize corresponding DSP carries out PGA control by the PGA control circuit of correspondence.
The operating principle of the COFDM modulator B103 of above ground portion and COFDM demodulator B104 and down-hole partial C OFDM modulator A109 and COFDM demodulator A108 are similar, therefore can design with reference to down-hole partial C OFDM modulator A109 and COFDM demodulator A108.
Below with reference to Fig. 1, the course of work to the high speed data transfer device that is used for oil well logging elaborates on the whole.
Ground based terminal 101 sends the corresponding command according to the needs of oil well logging, these the order in ground based terminal 101 according to certain form pack the back deliver to COFDM modulator B103 by ground based terminal interface 102, in COFDM modulator B103, the COFDM modulation is carried out in the order after these packings, COFDM modulator B103 will deliver to ground cable interface 105 through the order after the COFDM modulation then, and the order after utilizing logging cable 106 with these COFDM modulation again reaches the down-hole cable interface 107 and the COFDM demodulator A108 of down-hole part successively; In COFDM demodulator A108, the COFDM demodulation is carried out in the order through after the COFDM modulation that aboveground biography is come, recover through the order after ground based terminal 101 packings, downhole instrument interface 110 is delivered in the order that COFDM demodulator A108 will recover after these process ground based terminal 101 packings then, the order that downhole instrument interface 110 goes out to receive according to the packing format analysis of 101 pairs of orders of ground based terminal, simultaneously also can parse this order that receives is which downhole instrument that belongs in the downhole instrument 111, and last downhole instrument interface 110 reaches the downhole instrument 111 that this order will be controlled with this order that receives by corresponding interface.The ground based terminal interface 102 of above ground portion adopts the CPCI interface.
The high speed data transfer device that is used for oil well logging finishes up to required test contents test according to above-mentioned course of work periodic duty.
Below with reference to Fig. 3, the course of work of down-hole part is described further.
The COFDM modulator A109 course of work is: the data that the downhole instrument 111 that tool interface system 110 transmits under the modulated terminal DSP301 received well of down-hole is gathered, and carry out COFDM and modulate, deliver to modulated terminal data converter 303 then, in modulated terminal data converter 303, sample frequency according to D/A converter 304 is delivered to data D/A converter 304 continuously, in D/A converter 304, carry out the conversion output analog signal of digital to analogy, this analog signal is amplified by modulated terminal PGA305 under the control of down-hole modulated terminal DSP301 and modulated terminal PGA control circuit 307 and is exported down-hole modulated terminal wave filter 306 in the down-hole cable interface 107 to, the last modulation signal drive circuit of delivering to after down-hole modulated terminal wave filter 306 carries out filtering in the down-hole cable interface 107 308 is delivered to logging cable 106 after overdriving in modulation signal drive circuit 308; Down-hole modulated terminal Flash302 is used for the program of storage well modulated end DSP301.
Down-hole partial C OFDM separates the system device A108 course of work: down-hole cable interface 107 exports the signal of cable 106 to and delivers to the circuit module 318 that suppresses down-hole modulated terminal signal simultaneously, the signal that in the circuit module 318 that suppresses down-hole modulated terminal signal COFDM modulator A109 is exported to cable 106 suppresses to reduce the influence of this signal to COFDM demodulator A108, deliver to then in the down-hole demodulating end wave filter 316 and carry out filtering, filtered signal is delivered among the demodulating end PGA315, demodulating end PGA315 amplifies the filtered signal that receives under the control of down-hole demodulating end DSP311 and demodulating end PGA control circuit 317, deliver to the conversion of carrying out analog to digital in the A/D converter 314 according to the sample frequency of A/D converter through the signal after the demodulating end PGA315 amplification, at last under the control of demodulating end data converter 313 data signal after A/D converter 314 conversion is being delivered to down-hole demodulating end DSP311, in the demodulating end DSP311 of down-hole, carry out the COFDM demodulation, and the signal after the demodulation is delivered to downhole instrument interface 110 be further processed, down-hole demodulating end Flash312 is used for the program of demodulating end DSP311 under the storage well.
The sample frequency of the A/D converter 314 among the sample frequency of the D/A converter 304 among the COFDM modulator A109 and the COFDM demodulator A108 is identical, and all by producing in the modulated terminal data converter 303 among the COFDM modulator A109.
In the present embodiment, the sample frequency of the A/D converter 314 among the sample frequency of D/A converter 304 and the COFDM demodulator A108 is 625 KHzs.Test by reality, the uploading rate of this transmitting device can reach 800kbps on 7000 meters cable, under pass speed 30kbps, the uploading rate of this transmitting device then can reach more than the 1Mbps on 5500 meters cable, and transmission error rates all below 5 * 10^-8, has therefore improved the transmission code rate of logging system greatly.In addition, the described high speed data transfer device that is used for oil well logging is also in conjunction with the characteristics of logging system own, added interface module commonly used in logging system in the down-hole part, thereby be easy to be connected with the downhole logging instrument device, thereby improved the utilization rate of existing downhole logging instrument device, also reduced logging cost simultaneously.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from the spirit and scope of the present invention.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (10)
1. high speed data transfer device that is used for oil well logging, comprise: above ground portion and down-hole part, it is characterized in that, each structure of described above ground portion is connected successively, comprising: ground based terminal, ground based terminal interface, ground coded orthogonal frequency division multiplexing COFDM modem, ground cable interface; Described down-hole each structure of part is connected successively, comprising: downhole instrument, downhole instrument interface, down-hole COFDM modem, down-hole cable interface; Described ground cable interface is connected by logging cable with the down-hole cable interface.
2. the high speed data transfer device that is used for oil well logging according to claim 1 is characterized in that, described ground COFDM modem comprises: ground COFDM modulator and ground COFDM demodulator; Described down-hole COFDM modem comprises: down-hole COFDM modulator and down-hole COFDM demodulator.
3. the high speed data transfer device that is used for oil well logging according to claim 1, it is characterized in that described downhole instrument interface comprises: ethernet interface circuit module, 1553 bus interface circuit modules, CAN bus interface circuit module or analogue signal circuit modular converter; And, PLD, digital signal processor DSP, downhole instrument interface end nonvolatile memory Flash and SRAM SRAM; Described ethernet interface circuit module, 1553 bus interface circuit modules, controller local area network CAN bus interface circuit module or analogue signal circuit modular converter are connected with described PLD, and described DSP is connected with down-hole COFDM modem with described PLD, downhole instrument interface end Flash and SRAM SRAM respectively.
4. the high speed data transfer device that is used for oil well logging according to claim 3, it is characterized in that, the data of described downhole instrument interface collection are transferred to PLD by described 1553 bus interface circuit modules, CAN bus interface circuit module or analogue signal circuit modular converter, and described DSP is delivered in described PLD packing.
5. the high speed data transfer device that is used for oil well logging according to claim 1 is characterized in that, adopts the mode of ICP/IP protocol to transmit data between described downhole instrument interface and the ground based terminal interface; Described down-hole part adopts the mode of ICP/IP protocol that the transfer of data that collects is returned described above ground portion, and described above ground portion adopts the mode of ICP/IP protocol to send order to the down-hole part.
6. the high speed data transfer device that is used for oil well logging according to claim 2, it is characterized in that described down-hole COFDM modulator comprises: down-hole modulated terminal DSP, down-hole modulated terminal Flash, modulated terminal data converter, digital to analog converter, modulated terminal programmable gain amplifier PGA, down-hole modulated terminal wave filter, modulated terminal PGA control circuit; Described down-hole modulated terminal DSP receives the data of downhole instrument collection to carry out being sent to described modulated terminal data converter after the COFDM modulation, described modulated terminal data converter is delivered to described digital to analog converter according to the sample frequency of described digital to analog converter with described data, described digital to analog converter carries out exporting analog signal after the digital to analog conversion, described analog signal amplifies and exports to the down-hole modulated terminal wave filter of described down-hole cable interface by described modulated terminal PGA under the control of described down-hole modulated terminal DSP and modulated terminal PGA control circuit, deliver to the modulation signal drive circuit of described down-hole cable interface behind the modulated terminal filter filtering of described down-hole, described modulation signal drive circuit is delivered to described logging cable after overdriving.
7. the high speed data transfer device that is used for oil well logging according to claim 6, it is characterized in that, the down-hole cable interface of described down-hole part comprises: modulation signal drive circuit and down-hole transformer are connected with build-out resistor between described modulation signal drive circuit and the down-hole transformer; Described modulation signal drive circuit is connected with described down-hole modulated terminal wave filter.
8. the high speed data transfer device that is used for oil well logging according to claim 2, it is characterized in that described down-hole COFDM demodulator comprises: the circuit module of down-hole demodulating end digital signal processor DSP, down-hole demodulating end Flash, demodulating end data converter, analog-digital converter, demodulating end PGA, down-hole demodulating end wave filter, demodulating end PGA control circuit, inhibition down-hole modulated terminal signal; The circuit module that outputs signal to described logging cable and inhibition down-hole modulated terminal signal of described down-hole cable interface, deliver to described down-hole demodulating end wave filter after the signal that the circuit module of described inhibition down-hole modulated terminal signal exports logging cable to described COFDM modulator suppresses and carry out filtering, filtered signal is delivered to described demodulating end PGA, described demodulating end PGA amplifies filtered signal under the control of described down-hole demodulating end DSP and demodulating end PGA control circuit, carry out analog to digital conversion through delivering to described analog-digital converter after the described demodulating end PGA amplification, under the control of described demodulating end data converter the data signal after the described analog-digital converter conversion delivered to described down-hole demodulating end DSP, the signal of described down-hole demodulating end DSP after with the COFDM demodulation delivered to described downhole instrument interface.
9. according to each described high speed data transfer device that is used for oil well logging of claim 6 to 8, it is characterized in that the sample frequency of the analog-digital converter in the sample frequency of the digital to analog converter in the COFDM modulator of described down-hole and the described down-hole COFDM demodulator is identical.
10. the high speed data transfer device that is used for oil well logging according to claim 1 is characterized in that, described logging cable adopts armouring Camesa logging cable.
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| CNU2008200806766U CN201196088Y (en) | 2008-05-15 | 2008-05-15 | High-speed data transmission apparatus used for petroleum logging |
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| CNU2008200806766U CN201196088Y (en) | 2008-05-15 | 2008-05-15 | High-speed data transmission apparatus used for petroleum logging |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545965A (en) * | 2010-12-31 | 2012-07-04 | 上海博泰悦臻电子设备制造有限公司 | Bluetooth-based mobile phone as well as cooperation processing method and system of vehicle-mounted device |
| CN102619501A (en) * | 2012-03-27 | 2012-08-01 | 北京石大华旭建邦石油科技有限公司 | Data transmission system in petroleum logging instrument |
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| CN102839971A (en) * | 2011-06-21 | 2012-12-26 | 中国石油集团长城钻探工程有限公司 | Downhole logging instrumental bus system based on coaxial cable Ethernet and logging method |
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| CN103883315A (en) * | 2012-12-21 | 2014-06-25 | 中国石油天然气集团公司 | Downhole and ground information transmission network system and method |
| CN104168101A (en) * | 2014-08-28 | 2014-11-26 | 广西师范大学 | Two-way transmission system for coal mine fully mechanized mining data and control command data |
| CN104763413A (en) * | 2015-03-10 | 2015-07-08 | 中国海洋石油总公司 | Data bus, system and data transmission method for underground logging instruments |
| CN105587313A (en) * | 2014-10-23 | 2016-05-18 | 中国石油集团长城钻探工程有限公司 | High temperature slim hole well logging telemetry system and method |
| CN105626048A (en) * | 2016-03-25 | 2016-06-01 | 贵州天石能源科技有限公司 | Underground instrument multi-stage parallel-connection system used for oil well testing |
| CN106643900A (en) * | 2016-12-29 | 2017-05-10 | 中国石油天然气股份有限公司 | Multi-parameter testing device |
| CN107610435A (en) * | 2017-08-18 | 2018-01-19 | 中国科学院地质与地球物理研究所 | Suitable for the high speed logging remote transmission means of communication of polytype cable |
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| CN107730871A (en) * | 2017-10-23 | 2018-02-23 | 长江大学 | A kind of downhole data communication system of well logging apparatus |
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2008
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Cited By (23)
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|---|---|---|---|---|
| CN102545965A (en) * | 2010-12-31 | 2012-07-04 | 上海博泰悦臻电子设备制造有限公司 | Bluetooth-based mobile phone as well as cooperation processing method and system of vehicle-mounted device |
| CN102839971A (en) * | 2011-06-21 | 2012-12-26 | 中国石油集团长城钻探工程有限公司 | Downhole logging instrumental bus system based on coaxial cable Ethernet and logging method |
| CN102619501A (en) * | 2012-03-27 | 2012-08-01 | 北京石大华旭建邦石油科技有限公司 | Data transmission system in petroleum logging instrument |
| CN102619501B (en) * | 2012-03-27 | 2016-08-17 | 北京石大华旭建邦石油科技有限公司 | A kind of data transmission system in oil logging tool |
| CN102843166A (en) * | 2012-08-03 | 2012-12-26 | 北京航空航天大学 | Device and method for underground long-distance transmission of Manchester code |
| CN102843166B (en) * | 2012-08-03 | 2014-05-28 | 北京航空航天大学 | Device and method for underground long-distance transmission of Manchester code |
| CN103883315A (en) * | 2012-12-21 | 2014-06-25 | 中国石油天然气集团公司 | Downhole and ground information transmission network system and method |
| CN103362499A (en) * | 2013-06-28 | 2013-10-23 | 中国石油天然气集团公司 | Underground and ground information transmission data switching system and method |
| CN103334743B (en) * | 2013-07-15 | 2016-04-06 | 中国海洋石油总公司 | A kind of formation tester ground control system |
| CN103334743A (en) * | 2013-07-15 | 2013-10-02 | 中国海洋石油总公司 | Formation tester ground control system |
| CN104168101A (en) * | 2014-08-28 | 2014-11-26 | 广西师范大学 | Two-way transmission system for coal mine fully mechanized mining data and control command data |
| CN104168101B (en) * | 2014-08-28 | 2017-10-24 | 广西师范大学 | The bidirectional transmission system of coal mine fully-mechanized mining face data and control command data |
| CN105587313A (en) * | 2014-10-23 | 2016-05-18 | 中国石油集团长城钻探工程有限公司 | High temperature slim hole well logging telemetry system and method |
| CN104763413B (en) * | 2015-03-10 | 2017-09-22 | 中国海洋石油总公司 | It is a kind of for the data/address bus of downhole logging instruments, system and data transmission method |
| CN104763413A (en) * | 2015-03-10 | 2015-07-08 | 中国海洋石油总公司 | Data bus, system and data transmission method for underground logging instruments |
| CN105626048A (en) * | 2016-03-25 | 2016-06-01 | 贵州天石能源科技有限公司 | Underground instrument multi-stage parallel-connection system used for oil well testing |
| CN106643900A (en) * | 2016-12-29 | 2017-05-10 | 中国石油天然气股份有限公司 | Multi-parameter testing device |
| CN107610435A (en) * | 2017-08-18 | 2018-01-19 | 中国科学院地质与地球物理研究所 | Suitable for the high speed logging remote transmission means of communication of polytype cable |
| CN107730871A (en) * | 2017-10-23 | 2018-02-23 | 长江大学 | A kind of downhole data communication system of well logging apparatus |
| CN107676079A (en) * | 2017-11-14 | 2018-02-09 | 北京盛锐马科技有限公司 | The highly integrated shearing slurry pulsator control system of microminiature |
| CN110080749A (en) * | 2019-04-08 | 2019-08-02 | 中国科学技术大学 | A kind of universal adaptive high speed logging remote transmission system |
| CN110080749B (en) * | 2019-04-08 | 2020-08-28 | 中国科学技术大学 | Universal self-adaptive high-speed logging telemetry system |
| CN113775320A (en) * | 2021-11-11 | 2021-12-10 | 滨州学院 | Underground water injection device and underground water injection method |
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