CN202794372U - Signal testing device of electromagnetic telemetry measurement-while-drilling instrument - Google Patents
Signal testing device of electromagnetic telemetry measurement-while-drilling instrument Download PDFInfo
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- CN202794372U CN202794372U CN 201220354212 CN201220354212U CN202794372U CN 202794372 U CN202794372 U CN 202794372U CN 201220354212 CN201220354212 CN 201220354212 CN 201220354212 U CN201220354212 U CN 201220354212U CN 202794372 U CN202794372 U CN 202794372U
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Abstract
The utility model relates to a signal testing device of an electromagnetic telemetry measurement-while-drilling instrument, comprising two conductive clamps connected by a spring wire and an electromagnetic signal detection and indication circuit connected to the two clamps. The chain type clamps can be fixedly connected with two transmitting electrodes of different diameters by adjusting the position of a fastener of a chain, the electromagnetic signal detection and indication circuit includes two signal input ends and an indicating lamp, one electrode of each input end is communicated with the main clamp through a fixing bolt at the bottom of a detection and indication box, and the other electrode is communicated with a wring terminal at the tail end of the auxiliary clamp through a wiring terminal on the side face of the detection and indication box and the spring wire. The signal testing device provided by the utility model can be used to conveniently detect the working state of the electromagnetic telemetry measurement-while-drilling instrument.
Description
Technical field
The utility model relates to a kind of em telemetry formula steering tool signal-testing apparatus, be applicable to the input work of (Electromagnetic Measurement-While-Drilling is called for short EM-MWD) of various sizes em telemetry formula measurement while-drilling instrument in the rig-site utilization.
Background technology
The technical way of realizing at present measurement while drilling has mud-pulse, sound wave, electromagnetic wave and wire cable.Wherein electromagnetic wave is because transmission speed is fast, be subjected to the drilling technology less-restrictive, but also be fit to the new drilling techniques such as underbalance, air or foam, and become present research and use a more technology, also all formed the EM-MWD equipment (applying frequency is generally 2-10Hz) of oneself both at home and abroad.
Correlative study mechanism and each geophysical service company common mode that adopts when debugging and detect electromagnetic wave signal is to use oscillograph at present, its fundamental mode is: will pop one's head in connects respectively emission pipe nipple positive and negative electrode with ground wire, and the output waveform by the observation oscilloscope display screen has judged whether the signal emission.This mode can easily detect carrier frequency and the output waveform situation of signal, thereby can well judge the duty of equipment, but oscillograph needs independent Power supply, and exist in the application process at the scene to be connected with instrument and be difficult for or the shortcomings such as complicated operation, thereby this mode only suits to use in the laboratory.
In addition, the electromagnetic wave signal pick-up unit of other form is not suitable for the input work of EM-MWD yet, and reason is as follows:
1. their cardinal principle is to utilize electromagnetic sensor that the electromagnetic radiation that electrical equipment produces is monitored, when existing than strong electromagnetic in the environment, actually can't distinguish that or other electromagnetic interference sources cause in the environment that electromagnetic signal that testing result EM-MWD launches causes;
2. the electromagnetic radiation size can't show wave frequency in can only testing environment.Even if thereby the testing result in the non-magnetic environment of laboratory, electromagnetic radiation also can only devices illustrated be arranged during operation, the electromagnetic wave signal that radiation can not be described meets our modulation, because as long as electrical equipment is energising and operation, no matter whether equipment works and whether in working frequency range work, all can produce electromagnetic radiation;
3. this series products lowest detection frequency is 10Hz, and the practical application frequency of em telemetry formula steering tool is lower than 10Hz mostly;
4. this series products of great majority all needs Power supply, or independent power supply or dry cell, increases on the one hand cost, has also limited on-the-spot use simultaneously.
Summary of the invention
The purpose of this utility model is for the problems referred to above, proposes a kind of em telemetry formula steering tool signal-testing apparatus, and this device does not need external power supply and oscillograph just can accurately detect the different operating state of EM-MWD steering tool.
Technical scheme is: a kind of em telemetry formula steering tool signal-testing apparatus comprises two conduction clamps that connect by the spring wire, and is connected to two electromagnetic signal detection/indicating circuits on the clamp.
Detection/indicating circuit is comprised of rectification unit and light emitting diode.
Described conduction clamp is chain-type or cassette clamp; Described detection/indicating circuit is arranged in the box body of shielding, and box body is fixed on a conduction clamp, and the light emitting diode of detection/indicating circuit is located at exposed position on the box body.
That the utility model em telemetry formula steering tool signal-testing apparatus has is simple in structure, emission efficiency is high and realize that cost is low, only need clamp is fixedly attached to respectively emission the two poles of the earth of em telemetry formula steering tool to be measured, can judge easily the EM-MWD steering tool according to the flicker frequency of pilot lamp whether signal emission and signal frequency range are arranged, do not need external power supply and oscillograph, it is inaccurate also to have stopped the measurement that the electromagnetic interference (EMI) because of other electrical equipments causes, has greatly improved detection efficiency simultaneously.
Description of drawings
Below in conjunction with Figure of description the utility model is further described.
Fig. 1 is EM-MWD emission pipe nipple principle of work synoptic diagram and equivalent circuit diagram thereof.
Fig. 2 is ball bearing made using principle schematic of the present utility model.
Fig. 3 is rectifier bridge input/output voltage synoptic diagram.
Fig. 4 is main pincers of the present utility model and signal supervisory instrument schematic perspective view.
Fig. 5 is detection of the present utility model/indication box sectional view.
Decomposing schematic representation when Fig. 6 is concrete use the of the present utility model.
Schematic perspective view when Fig. 7 is concrete use the of the present utility model.
Among the figure: 1, the emission pipe nipple; 2, chain; 3, main pincers (one of clamp); 4, secondary pincers; 5, insulating short section; 6, pick-up unit (namely depositing the shielding box body of detection and indicating circuit); 7, connection terminal; 8, spring wire (being spring wire or title conductive coil); 9, signal lamp; 10 fixed bolt holes; 11 connection terminal holes.
Embodiment
Fig. 1 is EM-MWD emission pipe nipple principle of work synoptic diagram and equivalent circuit diagram thereof.The pipe nipple of the signal of EM-MWD equipment emission both at home and abroad all is the signal energisation mode that adopts this kind direct coupling type at present.According to shown in Figure 1, when the signal emission was arranged, excitation the two poles of the earth can be regarded as AC power; When there not being signal when emission, encouraging two pole tensions is zero, this be the utility model realize input according to the place.
For basic functional principle of the present utility model better is described, introduce in detail as an example of ball bearing made using principle schematic shown in Figure 2 example.
According to shown in Figure 2, its basic composition circuit is AC power, rectifier bridge and LED lamp; When the EM-MWD electromagnetic signals, emission the two poles of the earth of EM-MWD system are regarded as AC power, and bright through the direct current driven LED light that is converted to fluctuation behind the rectifier bridge, voltage U I and UO waveform synoptic diagram are as shown in Figure 3.
Consult Fig. 4 during assembling, be main clamp of the present utility model and signal supervisory instrument schematic perspective view; Main pincers are comprised of chain 2, clamp 3 and the signal supervisory instrument 6 of metal material, and wherein signal supervisory instrument is communicated with clamp body by the set bolt of bottom, bolt other end connecting circuit input end, as shown in Figure 5; Another input end of circuit can link to each other with spring wire 8 by the connection terminal 7 of pick-up unit side.Sub-folder pincers structure is similar with main clamp, shown in 4 among Fig. 6.
When detecting, major and minor clamp 3,4 is restrainted respectively the two poles of the earth that are bonded to emission pipe nipple 1 according to the mode of Fig. 6 by the position of adjusting chain 2 and clamp button bank, then the two ends with spring wire 8 are connected respectively to the input end of pick-up unit 6 sides and the tail end of sub-folder pincers 4 by connection terminal 7, connect afterwards as shown in Figure 7.After the start-up system work, the frequency that transmits by adjusting and the flicker frequency of viewing lamp 9 can be found: the flicker frequency of pilot lamp becomes greatly with the increase of signal frequency, thereby realizes that duty detects.
The signal lamp of detection/indication box is directly processed rear drive by the ac signal of emitter through signal rectification unit, and the flicker frequency of signal lamp represents the transmission frequency of the ac signal of emitter, and detection/indication box is without external power supply.
Detection/indication box shell forms the maskable outside electromagnetic interference by aluminum alloy materials, and is inner without electromagnetic sensor, drive coil and electromagnetic signal receiving antenna.
Claims (3)
1. an em telemetry formula steering tool signal-testing apparatus is characterized in that: comprise two conduction clamps that connect by the spring wire, and be connected to two electromagnetic signal detection/indicating circuits on the clamp.
2. em telemetry formula steering tool signal-testing apparatus according to claim 1, it is characterized in that: detection/indicating circuit is comprised of rectification unit and light emitting diode.
3. em telemetry formula steering tool signal-testing apparatus according to claim 1 and 2, it is characterized in that: described conduction clamp is chain-type or cassette clamp; Described detection/indicating circuit is arranged in the box body of shielding, and box body is fixed on a conduction clamp, and the light emitting diode of detection/indicating circuit is located at exposed position on the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220354212 CN202794372U (en) | 2012-07-20 | 2012-07-20 | Signal testing device of electromagnetic telemetry measurement-while-drilling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220354212 CN202794372U (en) | 2012-07-20 | 2012-07-20 | Signal testing device of electromagnetic telemetry measurement-while-drilling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202794372U true CN202794372U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220354212 Expired - Lifetime CN202794372U (en) | 2012-07-20 | 2012-07-20 | Signal testing device of electromagnetic telemetry measurement-while-drilling instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN202794372U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747176A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Electromagnetic wave logging instrument testing device |
| CN104747164A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Ground testing method for while-drilling orientation electromagnetic wave logging tool |
| CN112696189A (en) * | 2020-12-16 | 2021-04-23 | 成都多贝石油工程技术有限公司 | Near-bit rapid detection device and method |
-
2012
- 2012-07-20 CN CN 201220354212 patent/CN202794372U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747176A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Electromagnetic wave logging instrument testing device |
| CN104747164A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Ground testing method for while-drilling orientation electromagnetic wave logging tool |
| CN104747164B (en) * | 2013-12-31 | 2017-11-07 | 中国石油化工集团公司 | A kind of ground experiment method with brill orientation electromagnetic wave logger |
| CN112696189A (en) * | 2020-12-16 | 2021-04-23 | 成都多贝石油工程技术有限公司 | Near-bit rapid detection device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Patent manager of Sinopec Petroleum Engineering Service Co.,Ltd. Document name: Notification that Application Deemed not to be Proposed |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151106 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: SINOPEC OILFIELD SERVICE Corp. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: SHENGLI DRILLING TECHNOLOGY Research Institute OF SINOPEC |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220224 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee after: Sinopec Jingwei Co.,Ltd. Patentee after: Geological measurement and Control Technology Research Institute of Sinopec Jingwei Co.,Ltd. Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: SINOPEC OILFIELD SERVICE Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |