CN106324302B - Analog load circuit and neutron instrument analog generator load based on same - Google Patents
Analog load circuit and neutron instrument analog generator load based on same Download PDFInfo
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- CN106324302B CN106324302B CN201610967205.6A CN201610967205A CN106324302B CN 106324302 B CN106324302 B CN 106324302B CN 201610967205 A CN201610967205 A CN 201610967205A CN 106324302 B CN106324302 B CN 106324302B
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- 238000004088 simulation Methods 0.000 claims abstract description 42
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 239000003990 capacitor Substances 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 230000005284 excitation Effects 0.000 claims description 8
- 210000002445 nipple Anatomy 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V13/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a simulation load circuit and a neutron instrument simulation generator load based on the circuit, which comprises a resistor R1, wherein one end of the resistor R1 is connected with a grounding resistor R2, the other end of the resistor R1 is respectively connected with a 3kv power supply module and one end of a capacitor C1, and the other end of the capacitor C1 is connected with a grounding resistor R3 through the capacitor C2; if abnormity occurs, the outer barrel can be detached and the detection is carried out point by point according to the signal communication flow in the working mode until the problem is found, so that the matching detection of the whole series of instruments is facilitated, the maintenance efficiency is improved, and the command sending detection of the whole series of instruments indoors is completely finished.
Description
Technical Field
The invention belongs to the technical field of production well through casing logging instruments, and particularly relates to a simulation load circuit and a neutron instrument simulation generator load based on the circuit.
Background
At present, the development of domestic oil fields enters the later stage of development with high water content and high extraction degree, underground oil-water distribution is more complex, residual oil distribution is highly dispersed, and residual potential is difficult to excavate and submerge. The technology of logging the residual oil saturation of a cased well is more and more favored by geological engineers and oil reservoir engineers, the current over casing saturation test is mainly a nuclear logging method, a pulse neutron-neutron (PNN) instrument has the characteristics of small diameter, capability of logging through an oil pipe, double detectors and the like, has obvious application effects on the aspects of evaluating the oil saturation of a reservoir layer, searching potential gas layers, identifying water flooded layers and the like, is widely used in various oil fields on land in China, although the instrument is used as a controllable neutron source, the safety of the construction process can be guaranteed, the neutron radiation safety problem is caused, the on-site test can be carried out for transmitting neutron state test only when the instrument is required to be placed in the well for less than 50 meters, the ground base test must be carried out for placing the instrument into a water tank with the diameter of not less than 1.5m, and the centering mode is strictly prohibited under the condition that the ground has no protection safety, so that the instrument can not carry out integral joint debugging and test indoors.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide an analog load circuit and a neutron instrument analog generator load based on the circuit, which are used for adjusting the whole series of instrument circuits and detecting and judging faults in a pulsed neutron-neutron (PNN) instrument room.
In order to achieve the purpose, the technical scheme adopted by the invention is that the analog load circuit comprises a resistor R1, one end of the resistor R1 is connected with a grounding resistor R2, the other end of the resistor R1 is respectively connected with a 3kv power supply module and one end of a capacitor C1, the other end of the capacitor C1 is connected with a grounding resistor R3 through the capacitor C2, a neutron excitation waveform monitoring point TP2 is arranged between the resistor R1 and the grounding resistor R2, and a 3kv high-voltage monitoring point TP1 is arranged between the resistor R1 and the 3kv power supply module.
The resistor R1 is 68M omega, the grounding resistor R2 is 68K omega, the grounding resistor R3 is 0.1 omega, the capacitor C1 and the capacitor C2 are both 330nF, and the withstand voltage of the capacitor C1 and the capacitor C2 is at least 2kV.
A neutron instrument simulation generator load comprises an outer barrel with an opening at the top end, wherein an upper connector is installed at the opening at the top end of the outer barrel, a simulation load circuit module used for simulating internal circuit load of a sealing short section after silicone oil injection of a PNN generator is arranged in the outer barrel, the upper end of the simulation load circuit module is fixedly connected with the upper connector, the lower end of the simulation load circuit module is connected with a 3KV power module, the top end of the upper connector is connected with a PNN detection short section, a wire passing hole is formed in the upper connector along the axis direction of the upper connector, the 3KV power module is electrically connected with one end of three connecting wires, the other end of the three connecting wires is connected to corresponding points of the PNN communication short section, and the three connecting wires comprise a 150VDC power connecting wire, a grounding wire and a trigger command connecting wire;
the simulation load circuit module is provided with a power supply wiring point, the power supply wiring point is connected with a high-voltage output wiring point of the 3kv power supply module through a power line, and the simulation load circuit module is also provided with a TP1 wiring terminal for monitoring 3kv high voltage and a TP2 wiring terminal for monitoring neutron excitation waveform.
The analog load circuit module
The bottom end of the outer barrel is provided with a bottom plug for sealing the inner cavity of the outer barrel, and threaded connection structures are arranged between the top end of the outer barrel and the upper joint and between the bottom end of the outer barrel and the bottom plug.
The upper joint is also provided with a union for connecting other short sections.
And a high-voltage switch on the 3kv power supply module is controlled by sending a trigger pulse command by the PNN communication short section, and when the PNN power supply module works in a neutron-making state, the trigger pulse interval is 75ms.
The electrical and mechanical connection between the upper joint and the PNN detection short section is realized through a ten-core plug, the ten-core plug adopts an upper hole 5 and a lower pin 5 to form a 10-core plug, a plug bearing block is connected with the upper joint through four M3mm inner hexagonal screws and used for connecting a power-on command and a trigger command of the PNN detection short section, and one end of the upper joint connected with the PNN detection short section further comprises a union formed by combining two halves and two sealing O rings and used for mechanically connecting and sealing the PNN detection short section.
The upper connector is connected with the outer cylinder through an M36X 21 male buckle.
The aperture of the wire passing hole is 16mm.
Compared with the prior art, the neutron instrument has the beneficial effects that the electrical parameter design is the same as that of a neutron generator, conditions are provided for indoor adjustment and calibration of the whole series of instruments, the neutron instrument simulates the mechanical structure of the load of the generator and is also the same as that of the neutron generator, the neutron instrument is convenient to connect and install, after the traditional neutron generator short section receives a sending trigger command, a charged particle beam bombards a target, and the energy emitted to a stratum is 14MeV; when the neutron instrument simulation generator load A is used for debugging the instrument, the ground software supplies power and issues a neutron excitation command, at the moment, because the connected neutron tube is not an actual neutron tube, no harm can be caused, after the command is executed, the current voltage of the whole string of instrument accords with the normal current voltage of a neutron emission mode, a power supply part at the upper end of a communication short section can use an oscilloscope to test a correct communication waveform, and the measurement values of magnetic positioning, temperature and gamma can be read out from a ground software window; if abnormity occurs, the outer cylinder can be detached, and the point-by-point detection is carried out in the working mode according to the signal communication flow until the problem is found, which cannot be safely implemented by connecting an actual neutron generator.
Drawings
FIG. 1 is a diagram of an analog load circuit;
FIG. 2 is a schematic diagram of a neutron instrument simulation generator load configuration;
FIG. 3 is a schematic diagram of connection of a neutron instrument simulation generator load and other pups of the PNN.
In the attached drawing, 1, a ten-core plug, 2, an upper joint, 3, a union, 4, a connecting wire, 5, a mechanical framework, 6, a simulation load circuit, 7, an outer cylinder, 8, 3kv power supply modules, 9, a bottom plug, A, neutron instrument simulation generator loads, B, a PNN detector short section, C, a PNN gamma test short section, D, a PNN communication short section.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings.
As shown in fig. 2, the load of the neutron instrument simulation generator of the present invention comprises a ten-core plug 1, an upper connector 2, a union 3, a connecting wire 4, a mechanical skeleton 5, a simulation load circuit 6, an outer cylinder 7, a 3kv power module 8 and a bottom plug 9, and the load can be directly matched with a PNN detector for mechanical and electrical parameters through the integral combination of the circuit and the mechanical structure, and is used for the communication and working state adjustment and fault detection judgment of the whole string of instruments in the PNN instrument room, wherein:
the upper connector 2 is electrically and mechanically connected with the PNN detection short section B, a ten-core plug 1 of a lower needle 5 of an upper hole 5 is embedded in the upper end of the upper connector, a bearing block of the ten-core plug 1 is connected with the upper connector 2 through four M3mm internal hexagonal screws and used for switching on a power supply and triggering commands of the PNN detection short section B, the upper end of the upper connector also comprises a union 3 and two sealing O rings which are combined in two halves and used for being mechanically connected and sealed with the PNN detection short section B, the middle of the upper connector is a 16mm wire passing hole, the lower end of the upper connector is provided with an M36 x 21 male buckle to be connected with an outer barrel 7, and a fixing plate provided with two M2 holes is stretched out and used for connecting the upper connector 2 and the analog load circuit module 6.
The simulation load circuit module 6 is used for simulating a sealing nipple internal circuit load of a PNN generator injected with silicone oil, and is fixed on a mechanical framework 5, the top end of the mechanical framework 5 extends out of a fixing plate and is fixed with the fixing plate on an upper connector 2 through a bolt, the tail end of the mechanical framework 5 is in threaded connection with the top end of a 3KV power supply module 8, as shown in figure 1, the simulation load circuit is composed of a resistor-capacitor combined circuit and comprises a resistor R1, one end of the resistor R1 is connected with a grounding resistor R2, the other end of the resistor R1 is respectively connected with one end of a 3KV power supply module and one end of a capacitor C1, the other end of the capacitor C1 is connected with a grounding resistor R3 through a capacitor C2, a neutron excitation waveform monitoring point TP2 is arranged between the resistor R1 and the grounding resistor R2, a 3KV high-voltage monitoring point TP1 is arranged between the resistor R1 and the 3KV power supply module, waveform measurement can be carried out by using an oscilloscope, the waveform measurement of the signal waveform of the simulation generator working in a trigger mode can be detected, and the working of the whole series of instruments in a neutron working mode can be further judged whether the instruments in a working mode; in a preferred embodiment, the resistor R1 is 68M Ω/0.25w, the resistor R2 is 68K Ω/0.24w, the resistor R3 is 0.1 Ω/10w, and the capacitors C1 and C2 are 330Nf/2kv.
The 3kv power supply module is used for providing direct-current high voltage for the analog load circuit module 6, a high-voltage switch of the 3kv power supply module is controlled by a PNN communication short section D trigger pulse command, and when the instrument works in a neutron-beating state, the trigger pulse interval is 75ms.
The outer barrel 7 is used as a protective shell of the analog load circuit module 6 and the 3kv power supply module 8, the upper end of the outer barrel is connected with the upper connector 2 through threads, the lower end of the outer barrel is connected with the bottom plug 9 through threads, and the bottom plug 9 is connected with the outer barrel 7 and matched with the upper connector 2 to seal the two ends of the outer barrel 7 so as to protect a protective circuit part.
The three connecting wires 4 are respectively a 150VDC power supply connecting wire, a grounding wire and a trigger command connecting wire, are led into corresponding points of a 3KV power supply module 8 from a remote transmission short joint D through a PNN gamma test short joint C and a PNN detector short joint B, trigger command wires enable commands to be transmitted to the 3KV module from remote transmission, and 150v power supply wires enable instruments to supply power to the 3KV module.
As mentioned above, the neutron instrument simulation generator load can realize the whole string of instrument circuit calibration in the pulse neutron-neutron (PNN) instrument room, the device includes the mechanical part and the circuit part, the mechanical part includes the outer cylinder 7 and the upper joint 2, in order to bear the weight of the circuit part and connect with the detector part of the PNN instrument, the diameter of the mechanical part and the joint are the same as the real neutron generator, facilitate to connect with the short section of the existing instrument, the circuit part includes 3KV module and the simulation load circuit of the invention, the 3KV module provides 3KV voltage to the simulation load circuit, the simulation load circuit simulates the neutron generator according to the electrical parameter except the load in the external sealing section of the 3KV power module, the section load includes the voltage doubling circuit and the circuit of the neutron tube, through the design of the circuit and the mechanical structure, make the load can carry on the mechanical and electrical parameter matching with the PNN detector directly, used for the whole string of instrument in the PNN instrument room and calibrating the working condition and the fault detection and judging.
When the instrument is debugged, the ground software supplies power and issues a neutron excitation command, at the moment, because the connected neutron tube is not an actual neutron tube, no harm is caused, after the command is executed, the current voltage of the whole string of the instrument accords with the normal current voltage of a neutron emission mode, a correct communication waveform can be tested by using an oscilloscope from the power supply part at the upper end of the communication short section, and the measurement values of magnetic positioning, temperature and gamma can be read out from a ground software window; if abnormity occurs, the outer cylinder can be detached, and the point-by-point detection is carried out in the working mode according to the signal communication flow until the problem is found.
As shown in fig. 3, when the whole series of instruments in the PNN instrument room are used for communication, working state adjustment and fault detection judgment, the load a of the neutron instrument simulation generator is sequentially connected with the PNN detector pup joint B, the PNN gamma test pup joint C and the PNN communication pup joint D according to the connection schematic diagram of fig. 2, wherein the connection mode is union connection;
the communication short section D is communicated with a ground instrument, receives commands and issues commands to control all sensors and the neutron generator; receiving data of different sensors and sending the data to the ground in a digital form; signal acquisition of temperature and coupling is realized;
the PNN gamma test pup joint C is used for collecting and processing stratum gamma ray signals and is used for curve depth correction;
the function of the PNN detector short section B is as follows: a dual He3 thermal neutron detector detects neutrons emitted by the neutron generator.
A neutron instrument simulation generator load A simulates a neutron generator short section, and after a traditional neutron generator short section receives an issued trigger command, a charged particle beam bombards a target and emits energy of 14MeV to a stratum; when the neutron instrument simulation generator load A is used for debugging instruments, ground software supplies power and issues neutron excitation commands, at the moment, because the connected neutron tube is not an actual neutron tube, no harm is caused, after the commands are executed, the current voltage of the whole string of instruments meets the normal current voltage of a neutron emission mode, a power supply part at the upper end of a communication short section can use an oscilloscope to test correct communication waveforms, and the measurement values of magnetic positioning, temperature and gamma can be read out from a ground software window; if abnormity occurs, the outer cylinder can be detached, and the detection is carried out point by point according to the signal communication flow in the working mode until a problem is found, which cannot be safely implemented by connecting an actual neutron generator.
Claims (9)
1. A neutron instrument simulation generator load is characterized by comprising an outer barrel (7) with an opening at the top end, wherein an upper connector (2) is installed at the opening at the top end of the outer barrel (7), a simulation load circuit module (6) used for simulating internal circuit load of a sealed short section after silicone oil injection of a PNN generator is arranged in the outer barrel (7), the upper end of the simulation load circuit module (6) is fixedly connected with the upper connector (2), the lower end of the simulation load circuit module is connected with a 3KV power module (8), the top end of the upper connector (2) is connected with a PNN detection short section (B), a wire passing hole is formed in the upper connector (2) along the axis direction of the upper connector, the 3KV power module (8) is electrically connected with one end of three connecting wires (4), the other ends of the three connecting wires (4) are connected to corresponding points of the PNN communication short section (D), and the three connecting wires (4) comprise 150VDC power connecting wires, grounding wires and triggering command connecting wires;
the simulation load circuit module (6) is provided with a power supply wiring point, the power supply wiring point is connected with a high-voltage output wiring point of the 3kv power supply module (8) through a power line, and the simulation load circuit module (6) is also provided with a TP1 wiring terminal for monitoring a 3kv high voltage and a TP2 wiring terminal for monitoring a neutron excitation waveform;
the simulation load circuit in the simulation load circuit module (6) comprises a resistor R1, one end of the resistor R1 is connected with a ground resistor R2, the other end of the resistor R1 is connected with one end of a 3kv power supply module and one end of a capacitor C1 respectively, the other end of the capacitor C1 is connected with a ground resistor R3 through the capacitor C2, a neutron excitation waveform monitoring point TP2 is arranged between the resistor R1 and the ground resistor R2, and a 3kv high-voltage monitoring point TP1 is arranged between the resistor R1 and the 3kv power supply module.
2. The neutron instrument simulation generator load of claim 1, wherein the resistor R1 is 68M Ω, the ground resistor R2 is 68K Ω, the ground resistor R3 is 0.1 Ω, the capacitors C1 and C2 are both 330nF, and the capacitors C1 and C2 are at least 2kV.
3. A neutron instrument simulated generator load according to claim 1, characterized in that the simulated load circuit module (6).
4. The neutron instrument simulation generator load according to claim 1, wherein a bottom plug (9) for sealing an inner cavity of the outer cylinder (7) is further installed at the bottom end of the outer cylinder (7), and threaded connection structures are arranged between the top end of the outer cylinder (7) and the upper joint (2) and between the bottom end of the outer cylinder (7) and the bottom plug (9).
5. The neutron instrument simulation generator load according to claim 1, wherein a union (3) for connecting other short joints is further arranged on the upper joint (2).
6. The neutron instrument simulation generator load according to claim 1, wherein a high voltage switch on the 3kv power module (8) is controlled by a PNN communication sub (D) sending a trigger pulse command, and when the generator is operated in a neutron-on state, the trigger pulse interval is 75ms.
7. The neutron instrument simulation generator load according to claim 1, wherein the upper connector (2) and the PNN detection nipple (B) are electrically and mechanically connected through a ten-core plug (1), the ten-core plug (1) adopts 10-core plugs including an upper hole 5 and a lower needle 5, a plug bearing block is connected with the upper connector (2) through four M3mm internal hexagonal screws and used for connecting the PNN detection nipple to switch on a power supply and a trigger command, and one end of the upper connector (2) connected with the PNN detection nipple (B) further comprises a union of two halves and two sealing O rings for mechanically connecting and sealing with the PNN detection nipple (B).
8. A neutron instrument simulation generator load according to claim 1, wherein the upper connector (2) is connected to the outer barrel (7) by means of an M36 x 21 pin.
9. The neutron instrument simulation generator load of claim 1, wherein the aperture of the wire passing hole is 16mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610967205.6A CN106324302B (en) | 2016-10-28 | 2016-10-28 | Analog load circuit and neutron instrument analog generator load based on same |
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| CN201610967205.6A CN106324302B (en) | 2016-10-28 | 2016-10-28 | Analog load circuit and neutron instrument analog generator load based on same |
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| CN106324302B true CN106324302B (en) | 2023-03-31 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110018433B (en) * | 2019-05-21 | 2021-04-23 | 国网山西省电力公司电力科学研究院 | Performance test method of high-voltage switch characteristic test system |
| CN111751893A (en) * | 2020-05-26 | 2020-10-09 | 中国石油天然气集团有限公司 | Neutron generator nipple simulation device |
| CN112512198A (en) * | 2020-11-17 | 2021-03-16 | 西安奥华电子仪器股份有限公司 | Analog neutron generator, preparation method thereof and controllable neutron source fault detection method |
| CN112558183A (en) * | 2020-12-02 | 2021-03-26 | 中国石油天然气集团有限公司 | Neutron generator short section simulation device based on single chip microcomputer |
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