CN103498667B - A kind of for there being the downhole parameters transmission system of bar producing well - Google Patents
A kind of for there being the downhole parameters transmission system of bar producing well Download PDFInfo
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- CN103498667B CN103498667B CN201310484707.XA CN201310484707A CN103498667B CN 103498667 B CN103498667 B CN 103498667B CN 201310484707 A CN201310484707 A CN 201310484707A CN 103498667 B CN103498667 B CN 103498667B
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Abstract
The invention belongs to metrological testing technology field, relate to one and have bar producing well downhole parameters transmission system, transient electromagnetic is utilized to transmit the method for downhole parameters, a kind of high speed is provided, transmission system that real-time Transmission has bar producing well downhole parameters, solving downhole sensor parameter under deep-well condition cannot the problem of real-time Transmission.Down-hole radiating portion is made up of down-hole emission control assembly, lengthening joint cabin, transmitting coil, iron core and short circuit head cabin, and down-hole radiating portion comprises down-hole emission control assembly, lengthening joint cabin, transmitting coil, iron core and short circuit head cabin; Ground receiver processing section comprises receiving coil, preamplifier, variable gain amplifier, transient electromagnetic sample of signal integrating circuit, the first A/D converter, digital filter and Data Analysis Services terminal; The equipment composition of system is simple, easily manufacture and installation, can realize downhole parameters real-time Transmission, and transmission speed is greater than 1kb/s more than 4000 meters of dark oil wells.
Description
Technical field
The invention belongs to metrological testing technology field, relate to one and have bar producing well downhole parameters transmission system, by parameter real-time Transmission such as following for oil-well strata appointed part such as temperature, pressure and sucker rod force-bearing situations to well head, ground real-time analysis, processing demands can be met.
Background technology
In current petroleum production engineering, bar producing well proportion in mechanical oil recovery is had up to more than 90%, although there is non-lever oil production well in the last few years, to be still difficult to the leading position of shaking bar producing well.Along with consumption of petroleum increases severely, petroleum resources exploitation is accelerated, and towards deep layer, bad ground driving, complex working condition causes having rod recovering system fault rate greatly to increase.In the last few years, with deepening continuously of In Oil Field Exploration And Development, oil well depth constantly refreshes, there is the dark oil well reaching myriametre at present, in this case down-hole oil production equipment working condition becomes more severe, the probability that breaks down increases, for sucker rod, the High angle that deep-well condition lower sucker rod runs into, the large degree of depth and high its wearing and tearing of wearing and tearing aggravation, it corrodes, abrasion, the more general oil well of probability of dropout and fatigue fracture exceeds more than 40%, although at present about sucker rod mechanical parameter and wear detector many, and can well react sucker rod changed condition, but due to the limitation of oil well depth and environment, these valuable data cannot pass to well head in real time, common practice is stopped production by oil well, then the measurement mechanism being positioned at thousands of meters of depths is taken out, connect host computer, derive and store data, this makes each detection all want the fund of at substantial, whether to stop production in addition to derive and detect data completely by technician's micro-judgment, in this case the Best Times finding fault is missed also just not at all surprising.Therefore make great efforts to find a kind of reliable real-time downhole data transmission way to be the key technology that research and development department of numerous domestic and international oil company is dreamed of.
Wire transmission should be the most reliable modes of transmission data, but because sucker rod is enclosed within oil pipe, and pipe aperture is less than 52mm usually, bar external diameter is about 48mm, between oil pipe and beam hanger, gap is very little, and sucker rod operationally up-down stroke move distance be generally 2 ~ 3 meters, and with strong friction, under this operating mode, transmission line is easy to be rubbed, so the scheme of arranging holding wire transformation parameter is insecure.
Wireless transmission is considered to solve the most desirable route of sucker rod underground survey information real-time Transmission, and the common method of relevant downhole wireless transmission at present has two kinds: a kind of is mud or aquapulse telemetry, and another kind is electromagnetic wave while-drilling telemetry.Wherein mud or aquapulse technology are with the mechanical instantaneous blocking of method or open mud or flow passage generation hydraulic impulse, data are transmitted by hydraulic impulse, this technology maturation is applied to well data transmission, the shortcoming of this technology is that data transmission bauds is slow, and only could work when mud or water proper flow, and current conditions some oil wells cannot produce flowing mud or liquid, and then cannot promote in all producing wells, and the transmitting distance of which in oil well is less than 2000m at present; With regard to electromagnetic wave while-drilling telemetry, during its single electromagnetic signal transmission underground sucker rod metrical information, owing to being subject to the factor impacts such as decay, noise and multipath effect, signal occur distortion or mistake phenomenon serious, in high angle hole and horizontal well, this impact is particularly remarkable, and the transmitting of current which is apart from less than 1000m.
Generally speaking, be also in the starting stage having in bar producing well downhole parameters real-time Transmission both at home and abroad, be badly in need of occurring new solution.Numerous oil recovery technique personnel technical barriers urgently to be resolved hurrily about oil well parameter real-time Transmission problem.
Summary of the invention
1, the object of the invention is: be that signal propagates conductor with stratum, transient electromagnetic is utilized to transmit the method for downhole parameters, a kind of high speed is provided, transmission system that real-time Transmission has bar producing well downhole parameters, solving downhole sensor parameter under deep-well condition cannot the problem of real-time Transmission.
2, technical scheme of the present invention is: one is used for there is bar producing well downhole parameters transmission system, is made up of down-hole radiating portion and ground receiver processing section.Down-hole radiating portion is by down-hole emission control assembly, lengthening joint cabin, transmitting coil, iron core and short circuit head cabin composition, ground receiver processing section comprises receiving coil, preamplifier, variable gain amplifier, transient electromagnetic sample of signal integrating circuit, first A/D converter, digital filter and Data Analysis Services terminal, relation between them is: lengthening joint cabin and short circuit head cabin are connected to form the body of down-hole radiating portion by thread seal, then be connected with sucker rod by screw thread, make down-hole radiating portion in deep-well, have stable and reliable working environment, the stable cavity that lengthening joint cabin and inside, short circuit head cabin form is for installing the down-hole emission control assembly higher to operating environment requirements, transmitting coil and iron core, emission control assembly in down-hole to get parms signal from sensor, through conditioning, conversion process, form data signal, and data are stored in down-hole mass storage with backup, data are carried out carrier frequency simultaneously, conditioning, signal amplifies process, form bipolarity square wave excitation signal and be transferred to transmitting coil, transmitting coil is wrapped in iron core outside, the non-winding terminal of iron core inserts in short circuit head cabin after insulation processing, form reliable underground low frequencies to form, the pumping signal of the bipolarity square wave produced by emission control assembly in down-hole is converted into useful electromagnetic signal emitting and goes out, electromagnetic signal transfers to stratum through oil pipe and sleeve pipe, be that conductor propagation is to ground with stratum, ground receiver processing section is by being imbedded in the receiving coil near the oil well mouth of earth's surface, catch the Low frequency transients electromagnetic signal from depths, stratum, successively through preamplifier, variable gain amplifier, transient electromagnetic signal integration sample circuit, first A/D converter, after digital filter and Data Analysis Services terminal processes, obtain the parameter of downhole transmitted.
Described down-hole radiating portion comprises down-hole emission control assembly, lengthening joint cabin, transmitting coil, iron core and short circuit head cabin, lengthening joint cabin and short circuit head cabin are connected to form the body of down-hole radiating portion by thread seal, its inner chamber is coated with isolation layer, reduces High Temperatures In Oil-well to the impact of internal body cavity; Body is connected with sucker rod by screw thread, for down-hole radiating portion creates stable and reliable launch environment in deep-well, launches Control Component, transmitting coil and iron core under internal body cavity mounting shaft; Emission control assembly in down-hole to get parms signal from sensor, through conditioning, conversion process, form array signal, data are stored in down-hole mass storage with backup, data are carried out carrier frequency, conditioning, signal amplification process simultaneously, form the pumping signal of bipolarity square wave; Transmitting coil Main Function realizes Conversion of Energy, in order to strengthen transmit signal strength, adopt multiturn number small coil, require during installation to place iron core in transmitting coil inside, and transmitting coil is wrapped on iron core, iron core one section inserts short circuit head cabin after insulation processing, forms reliable underground and launches formation, and the pumping signal of the bipolarity square wave produced by emission control assembly in down-hole is converted into useful signal and is emitted in stratum.
Described down-hole emission control assembly is made up of FPGA controller, mass storage, large-capacity battery, power control circuit, signal conditioning circuit, the second A/D converter, transmitting digital-to-analogue conversion, power amplifier and emission switch circuit.FPGA controller is the nervous centralis of down-hole radiating portion, be responsible for radiating portion and extraneous exchanges data under the electricity needs that emission sensor parameter is wanted in mass storage backup, coordination large-capacity battery meets system element and control well, it is also responsible for tranmitting frequency and the stand-by time of setting down-hole radiating portion in addition, and according to the intensity that formation resistivity regulates tranmitting frequency and transmits; Mass storage is for having stored or will launch the parameter of transmission, play data backup, when sucker rod takes out maintenance from oil well time, can derive from down-hole radiating portion and transmit data, with receive comparing, the data of corrected received also judge the situation of transmission system according to this; Large-capacity battery is the energy source of down-hole radiating portion, is responsible for the supply of electric power providing each ingredient, should use the lithium battery that capacity is large, volume is little; Power control circuit, according to the voltage requirements of various piece, is responsible for the supply of electric power providing demand, is answered strict control to realize low-power consumption, to work long hours in addition to the working power of down-hole radiating portion; Signal conditioning circuit is responsible for the scope analog voltage signal exported from downhole sensor being converted to FPGA controller requirement, through the second A/D converter, analog signal is transformed to data signal afterwards, transfers to FPGA controller coprocessing; Launch digital-to-analogue conversion and the data signal that FPGA controller exports is converted to analog signal; Power amplifier is for increasing excitation signal strength, the guarantee that system has a darker transmittability derives from the signal strength signal intensity that transmitting coil produces, one of native system solution to this problem is exactly strengthen emission system emission current intensity, and this arranges the object of power amplifier just; Emission switch circuit is the core of transient electromagnetic transmission method, forms control bridge road and forms, mainly carry out electric energy conversion, realize the output of bipolarity square wave by four field-effect transistors and transmitting coil.
Described transmitting coil Main Function in the present system realizes Conversion of Energy, and the transient signal that driving source produces is converted into useful signal and is emitted in stratum; Transmitting coil material selection linear diameter is the copper conductor of about 0.3mm, uses enamel-covered wire coiling; Transmitting coil is designed to multiturn small coil, and the number of turn is 50 ~ 100 circles; Place iron core in transmitting coil inside and strengthen transmit signal strength, iron core one end is inserted in the aperture of short circuit head cabin after insulation processing, forms reliable underground transmitter unit.Described lengthening joint cabin and the two ends in short circuit head cabin all have screw thread for mutually combining and be connected with sucker rod between them, form the body of down-hole radiating portion, because down-hole radiating portion needs long-term work in down-hole, and underground work limited space, working environment are extremely disliked slightly, there are high temperature, high pressure and stronger corrosivity etc., so the quality of body directly affects down-hole radiating portion reliability and stability.
Described ground receiver processing section comprises receiving coil, preamplifier, variable-gain amplifier, transient electromagnetic sample of signal integrating circuit, the first A/D converter, digital filter and Data Analysis Services terminal.The transient electromagnetic that down-hole radiating portion is launched is propagated using the earth earthward as propagation conductor, its transient electromagnetic signal produced has wider frequency spectrum, comprise low frequency and radio-frequency component simultaneously, and radio-frequency component signal when passing through sleeve pipe through oil pipe can shield by the sleeve pipe of metal material a part, remaining part can be consumed in the earth formation, when passing to ground, radio-frequency component remains little, but the low-frequency component in signal effectively can penetrate sleeve pipe and enters stratum and then transfer to ground, transition low frequency electromagnetic signals along landing surface transmission can form electrical potential difference near oil well, low frequency electromagnetic signals is caught by burying receiving coil near the oil well of ground, preamplifier comprises the signal conditioner of electromagnetic signal passage and the signal conditioner of interfering signal, and for the conditioning to electromagnetic signal and interfering signal, filtering Hz noise, carries out anti-aliasing filter, variable-gain amplifier, by changing receiving gain, adjusts the step-down signal dynamics excursion frequently received, the contribution of Received signal strength is tended towards stability, so that signal sampling extracts, transient electromagnetic sample of signal integrating circuit is key one ring of ground receiver processing section.In order to Received signal strength is recorded reliably, requirement system has higher sensitivity, but due to transient electromagnetic signal in late period magnitude, to have reached microvolt level even lower, so the actual Receiver Precision of receiver at least will reach this level, owing to usually using dutycycle to be that the bi-directional pulse current of 1 is as driving source in Oil/gas Well transient electromagnetic device, so the primary signal that receiving coil produces also is bipolar signal, output valve like this after the process of transient electromagnetic sample of signal integrating circuit will obtain the result added up for useful signal, and for the noise signal of slow decay, due to just, sampled value symbol in negative half-cycle is contrary, both are added and will cancel each other, thus greatly reduce interference level, sampling gate is by periodic triggers Pulse Width Control, thus the maintenance that successively added up by the Transient electromagnetic response signal in multiple cycle is got off, first A/D converter is used for the analog signal after by sampling and is converted to data signal, the impact that digital filter produces for filtering ultralow frequency composition and a small amount of residual radio-frequency component, Data Analysis Services terminal comprises carries out reduction treatment, analysis, printing and storage to the parameter of downhole transmitted.
3, advantage of the present invention:
(1) transmission of transition low frequency electromagnetic has stronger penetrability in the earth formation, and stable signal transmission is good, make native system can realize downhole parameters real-time Transmission more than 4000 meters of dark oil wells, and transmission speed is greater than 1kb/s;
(2) equipment composition is simple, easy manufacture, installation, and be connected with sucker rod due to down-hole radiating portion, the approximate connection function replacing joint hoop, therefore this transmission system is installed do not need to carry out adaptability reform to oil rig, more can not produces interference to oil well oil-pumping work.
Accompanying drawing explanation
Fig. 1 is the contour structures of down-hole radiating portion primary clustering;
Fig. 2 is the A-A cross-sectional schematic of the contour structures of down-hole radiating portion primary clustering;
The composition of Fig. 3 transmission system;
Fig. 4 is emission switch bridge road;
Fig. 5 is for receiving integration sampling circuit
In figure, symbol description is as follows:
1-down-hole emission control assembly; 2-lengthening joint cabin; 3-transmitting coil; 4-iron core; 5-short circuit head cabin; 6-sucker rod; 7-receiving coil; 8-preamplifier; 9-variable gain amplifier; 10-transient electromagnetic sample of signal integrating circuit; 11-the first A/D converter; 12-digital filter; 13-Data Analysis Services terminal; 14-polarity switch; 15-preamplifier; 16-sampling gate; 17-trigger
101-FPGA controller; 102-mass storage; 103-large-capacity battery; 104-power control circuit; 105-signal conditioning circuit; 106-sensor signal; 107-the second A/D converter; 108-launch digital-to-analogue conversion; 109-power amplifier; 1010-emission switch circuit
Detailed description of the invention
Know to enable one of ordinary skill in the art and understand technical scheme of the present invention, now by reference to the accompanying drawings the specific embodiment of the present invention is described further.
One is used for there is bar producing well downhole parameters transmission system, is made up of down-hole radiating portion and ground receiver processing section.As shown in Figure 1, radiating portion profile such as sucker rod joint in down-hole binds round, cylindrically, two ends connecting with pumping rod 6, inside is installed the strict electronic device of environmental requirement; As shown in Figure 2, down-hole radiating portion is made up of down-hole emission control assembly 1, lengthening joint cabin 2, transmitting coil 3, iron core 4 and short circuit head cabin 5, lengthening joint cabin 2 and short circuit head cabin 5 are connected to form the body of down-hole radiating portion by thread seal, then be connected with sucker rod 6 by screw thread, the stable cavity that lengthening joint cabin 2 and inside, short circuit head cabin 5 form is for installing down-hole emission control assembly 1, transmitting coil 3 and the iron core 4 higher to operating environment requirements.
Described transmitting coil 3 Main Function in the present system realizes Conversion of Energy, and the transient signal that driving source produces is converted into useful signal and is emitted in stratum; Transmitting coil 3 material selection linear diameter is the copper conductor of about 0.3mm, uses enamel-covered wire coiling; Transmitting coil 3 is designed to multiturn small coil, and the number of turn is 50 ~ 100 circles; Place iron core 4 in transmitting coil 3 inside and strengthen transmit signal strength, iron core 4 one end is inserted in the aperture of short circuit head cabin 5 after insulation processing, forms reliable underground transmitter unit.
As shown in Figure 3, described down-hole emission control assembly is made up of FPGA controller 101, mass storage 102, large-capacity battery 103, power control circuit 104, signal conditioning circuit 105, second A/D converter 107, transmitting digital-to-analogue conversion 108, power amplifier 109 and emission switch circuit 1010.FPGA controller 101 is the nervous centralis of down-hole radiating portion, be responsible for radiating portion and extraneous exchanges data under the electricity needs that emission sensor parameter is wanted in mass storage 102 backup, coordination large-capacity battery 103 meets system element and control well, it is also responsible for tranmitting frequency and the stand-by time of setting down-hole radiating portion in addition, and according to the intensity that formation resistivity regulates tranmitting frequency and transmits; Mass storage 102 is for having stored or will launch the parameter of transmission, when sucker rod 6 takes out maintenance from oil well time, can derive from down-hole radiating portion and transmit data, the data that will receive comparing corrected received also judge the situation of transmission system according to this; Large-capacity battery 103 is the energy source of down-hole radiating portion, is responsible for the supply of electric power providing each ingredient, uses the lithium battery that capacity is large, volume is little; Power control circuit 104, according to the voltage requirements of various piece, is responsible for the supply of electric power providing demand, answers strict control to realize low-power consumption, to work long hours in addition to the working power of down-hole radiating portion; The responsible scope analog voltage signal exported from downhole sensor being converted to FPGA controller 101 and requiring of signal conditioning circuit 105, is transformed to data signal through the second A/D converter 107 by analog signal afterwards, transfers to FPGA controller 101 coprocessing; Launch digital-to-analogue conversion 108 and the data signal that FPGA controller 101 exports is converted to analog signal; Power amplifier 109 is for increasing excitation signal strength, the guarantee that system has a darker transmittability derives from the signal strength signal intensity that transmitting coil 3 produces, and one of native system solution to this problem is exactly arrange power amplifier 109 to increase emission system emission current intensity; Signal conditioning circuit 105, second A/D converter 107, transmitting digital-to-analogue conversion 108, power amplifier 109 all can adopt known technology.
Described emission switch circuit 1010 is cores of transient electromagnetic transmission, and mainly carry out electric energy conversion, realize the output of bipolarity square wave, as shown in Figure 4, it is by four field-effect transistor k1 ~ k4 and transmitting coil R
lcomposition control bridge road forms, when the bridge road conducting of k1 and k4 composition, and transmitting coil R
lin electric current be just, when k2 and k3 composition the conducting of bridge road time, transmitting coil R
lin electric current be negative, when Liang Zuqiao road alternate conduction, transmitting coil R
ljust there will be the positive and negative electric current replaced, in addition because metal sleeve exists shielding action to electromagnetic wave, this just requires that transmitting power is enough large, the transmitting coil R of native system
lemission current amplitude should be limited in 1A ~ 3A, launch to realize big current and turn off fast, k1, k2, k3 and k4 select field-effect transistor.
As shown in Figure 3, described ground receiver processing section comprises receiving coil 7, preamplifier 8, variable gain amplifier 9, transient electromagnetic sample of signal integrating circuit 10, first A/D converter 11, digital filter 12 and Data Analysis Services terminal 13.The transient electromagnetic that down-hole radiating portion is launched is propagated using the earth earthward as propagation conductor, its transient electromagnetic signal produced has wider frequency spectrum, comprise low frequency and radio-frequency component simultaneously, and radio-frequency component signal when passing through sleeve pipe through oil pipe can shield by the sleeve pipe of metal material a part, remaining part can be consumed in the earth formation, when passing to ground, radio-frequency component remains little, but the low-frequency component in signal effectively can penetrate sleeve pipe and enters stratum and then transfer to ground, transition low frequency electromagnetic signals along landing surface transmission can form electrical potential difference near oil well, low frequency electromagnetic signals is caught by burying receiving coil 7 near the oil well of ground, preamplifier 8 comprises the signal conditioner of electromagnetic signal passage and the signal conditioner of interfering signal, and for the conditioning to electromagnetic signal and interfering signal, filtering Hz noise, carries out anti-aliasing filter, variable gain amplifier 9, by changing receiving gain, adjusts the step-down signal dynamics excursion frequently received, the contribution of Received signal strength is tended towards stability, so that signal sampling extracts, first A/D converter 11 is for being converted to data signal by the analog signal after sampling, the impact that digital filter 12 produces for filtering ultralow frequency composition and a small amount of residual radio-frequency component, , Data Analysis Services terminal 13, preamplifier 8, variable gain amplifier 9, first A/D converter 11, digital filter 12 all can adopt known technology, Data Analysis Services terminal 13 comprises carries out reduction treatment, analysis, printing and storage to the parameter of downhole transmitted.
Described transient electromagnetic sample of signal integrating circuit 10 is key one ring of ground receiver processing section, and its circuit theory as shown in Figure 5.In figure, V
ifor received through amplifying signal voltage, V
ofor the output voltage at capacitor C two ends, receiving coil is bipolar signal, when negative polarity transient electromagnetic signal enters integrator, polarity switch 14 commutation is swung to, make the signal entering Sampling Integral device be always on the occasion of, through this processed by preamplifier 15 after output valve will obtain the result added up for useful signal, and for the noise signal of slow decay, due to just, sampled value symbol in negative half-cycle is contrary, both are added and will cancel each other, thus greatly reduce interference level, sampling gate 16 is by triggering 17 periodic triggers Pulse Width Control, thus the maintenance that successively added up by the Transient electromagnetic response signal in multiple cycle is got off.
Claims (1)
1., for there being a downhole parameters transmission system for bar producing well, comprising down-hole radiating portion and ground receiver processing section, it is characterized in that:
(1) down-hole radiating portion is made up of down-hole emission control assembly (1), lengthening joint cabin (2), transmitting coil (3), iron core (4) and short circuit head cabin (5), and ground receiver processing section comprises receiving coil (7), preamplifier (8), variable gain amplifier (9), transient electromagnetic sample of signal integrating circuit (10), the first A/D converter (11), digital filter (12) and Data Analysis Services terminal (13), lengthening joint cabin (2) and short circuit head cabin (5) are connected to form the body of down-hole radiating portion by thread seal, then be connected with sucker rod (6) by screw thread, make down-hole radiating portion in deep-well, have stable and reliable working environment, the stable cavity that lengthening joint cabin (2) and short circuit head cabin (5) inside form is for installing the down-hole emission control assembly (1) higher to operating environment requirements, transmitting coil (3) and iron core (4), down-hole emission control assembly (1) to get parms signal from sensor, through conditioning, conversion process, form data signal, and data are stored in down-hole mass storage (102) to back up, data are carried out carrier frequency simultaneously, conditioning, signal amplifies process, form bipolarity square wave excitation signal and be transferred to transmitting coil (3), it is outside that transmitting coil (3) is wrapped in iron core (4), iron core (4) non-winding terminal inserts in short circuit head cabin (5) after insulation processing, form reliable underground low frequencies to form, the pumping signal of the bipolarity square wave produced by down-hole emission control assembly (1) is converted into useful electromagnetic signal emitting and goes out, electromagnetic signal transfers to stratum through oil pipe and sleeve pipe, be that conductor propagation is to ground with stratum, ground receiver processing section is by being imbedded in the receiving coil (7) near the oil well mouth of earth's surface, catch the Low frequency transients electromagnetic signal from depths, stratum, successively through preamplifier (8), variable gain amplifier (9), transient electromagnetic sample of signal integrating circuit (10), first A/D converter (11), after digital filter (12) and Data Analysis Services terminal (13) process, obtain the parameter of downhole transmitted,
(2) emission control assembly in down-hole is made up of FPGA controller (101), mass storage (102), large-capacity battery (103), power control circuit (104), signal conditioning circuit (105), the second A/D converter (107), transmitting digital-to-analogue conversion (108), power amplifier (109) and emission switch circuit (1010);
(3) emission switch circuit (1010) is the core of transient electromagnetic transmission method, and mainly carry out electric energy conversion, realize the output of bipolarity square wave, it is by four field-effect transistor k1 ~ k4 and transmitting coil R
lcomposition control bridge road forms, and wherein k1 and k4, k2 and k3 form bridge road, bridge road alternate conduction, transmitting coil R
ljust there will be the positive and negative electric current replaced; In addition because metal sleeve exists shielding action to electromagnetic wave, this just requires that transmitting power is enough large, the transmitting coil R of native system
lthe driving source emission current amplitude received should be limited in 1A ~ 3A, and launch to realize big current and turn off fast, k1, k2, k3 and k4 select field-effect transistor;
(4) transient electromagnetic sample of signal integrating circuit (10) key one ring that is ground receiver processing section, what it received is bipolar signal, when negative polarity transient electromagnetic signal enters, polarity switch (14) commutation swing to, make the signal entering Sampling Integral device be always on the occasion of; The result added up will be obtained by the output valve after preamplifier (15) process for useful signal through this, and for the slow noise signal decayed, because the sampled value symbol in the positive and negative half period is contrary, both are added and will cancel each other, thus greatly reduce interference level; Sampling gate (16) is by triggering (17) periodic triggers Pulse Width Control, and the maintenance that successively added up by the Transient electromagnetic response signal in multiple cycle is got off.
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|---|---|---|---|---|
| CN105386790A (en) * | 2015-11-05 | 2016-03-09 | 辽宁工程技术大学 | Device for on-line monitoring wear of underground essential equipment |
| CN108316921B (en) * | 2017-01-17 | 2023-09-08 | 天津兴衡石油装备制造有限公司 | Automatic sampling device for oil well |
| CN111448764B (en) * | 2017-12-13 | 2022-03-25 | 星光随钻测量公司 | Electromagnetic telemetry transmitter apparatus and mud pulse-electromagnetic telemetry assembly |
| CN112014892A (en) * | 2019-05-30 | 2020-12-01 | 天津大学青岛海洋技术研究院 | Transient electromagnetic shallow layer full wave exploration and measurement system |
| CN112431586B (en) * | 2020-11-16 | 2024-04-16 | 中煤科工集团西安研究院有限公司 | Method and device for acquiring data in cable transient electromagnetic probe drilling |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2229733C2 (en) * | 1999-03-23 | 2004-05-27 | Научно-производственное предприятие "ЛУЧ" | Geophysical telemetring system to transmit hole data |
| CN1657742A (en) * | 2004-02-16 | 2005-08-24 | 中国石油勘探开发研究院钻井工艺研究所 | Electromagnetic telemetering method and system of measuring by bit |
| CN102733793A (en) * | 2012-06-28 | 2012-10-17 | 中国地质大学（武汉） | Real-time monitoring system for hole bottom parameters in deep hole drilling |
| CN103061754A (en) * | 2011-10-19 | 2013-04-24 | 中国石油化工股份有限公司 | Electromagnetic wave measurement while drilling system wireless remote receiving device and measuring method and application thereof |
| CN103061755A (en) * | 2011-10-19 | 2013-04-24 | 中国石油化工股份有限公司 | Short distance transmission system for wireless electromagnetic wave signals of downhole near bit and short distance transmission method |
| CN103089249A (en) * | 2013-01-09 | 2013-05-08 | 电子科技大学 | Signal wireless electromagnetism transmission system while drilling |
| CN203214049U (en) * | 2012-12-28 | 2013-09-25 | 中国电子科技集团公司第二十二研究所 | Wireless while-drilling measurement system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7145473B2 (en) * | 2003-08-27 | 2006-12-05 | Precision Drilling Technology Services Group Inc. | Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
-
2013
- 2013-10-16 CN CN201310484707.XA patent/CN103498667B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2229733C2 (en) * | 1999-03-23 | 2004-05-27 | Научно-производственное предприятие "ЛУЧ" | Geophysical telemetring system to transmit hole data |
| CN1657742A (en) * | 2004-02-16 | 2005-08-24 | 中国石油勘探开发研究院钻井工艺研究所 | Electromagnetic telemetering method and system of measuring by bit |
| CN103061754A (en) * | 2011-10-19 | 2013-04-24 | 中国石油化工股份有限公司 | Electromagnetic wave measurement while drilling system wireless remote receiving device and measuring method and application thereof |
| CN103061755A (en) * | 2011-10-19 | 2013-04-24 | 中国石油化工股份有限公司 | Short distance transmission system for wireless electromagnetic wave signals of downhole near bit and short distance transmission method |
| CN102733793A (en) * | 2012-06-28 | 2012-10-17 | 中国地质大学（武汉） | Real-time monitoring system for hole bottom parameters in deep hole drilling |
| CN203214049U (en) * | 2012-12-28 | 2013-09-25 | 中国电子科技集团公司第二十二研究所 | Wireless while-drilling measurement system |
| CN103089249A (en) * | 2013-01-09 | 2013-05-08 | 电子科技大学 | Signal wireless electromagnetism transmission system while drilling |
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