CN103595521A - Cross-well electromagnetic measurement time synchronizing system - Google Patents
Cross-well electromagnetic measurement time synchronizing system Download PDFInfo
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- CN103595521A CN103595521A CN201310510571.5A CN201310510571A CN103595521A CN 103595521 A CN103595521 A CN 103595521A CN 201310510571 A CN201310510571 A CN 201310510571A CN 103595521 A CN103595521 A CN 103595521A
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Abstract
The invention discloses a cross-well electromagnetic measurement time synchronizing system through a satellite navigation system. According to the technical scheme, the cross-well electromagnetic measurement time synchronizing system is composed of more than two independent electromagnetic measurement time synchronizing devices in a connected mode. Each electromagnetic measurement time synchronizing device comprises a time synchronizing receiving device, a time synchronizing control device and a power supply and communication interface device, wherein the time synchronizing receiving devices are used for receiving signals from a navigation satellite and generating time synchronizing signals through a control device, the time synchronizing signals control the electromagnetic measurement time synchronizing devices to carry out coordination work so as to achieve synchronous measurement of cross-well electromagnetism. Compared with a wired cable synchronizing system, the cross-well electromagnetic measurement time synchronizing system based on the satellite navigation system has the advantages of being easy and convenient to construct, applicable to all weather, good in time effect, high in accuracy and the like. The cross-well electromagnetic measurement time synchronizing system can accomplish synchronous cross-well measurement, and synchronizing precision is lower than 100ns.
Description
Technical field
The present invention relates to electromagnetic measurement device technical field between well, specifically a kind ofly utilize electromagnetic measurement clock synchronization system between the well that satellite navigation system carries out.
Background technology
Conventional logging technology is applicable to individual well and measures, can meticulous reflection well near formation information, but its investigation depth is shallow, is difficult to reflecting regional stratum condition.Interborehole measurement investigative range is by contrast large, can reflect well formation information.
Interborehole measurement has been cooperated by two cover measuring equipments, measuring the synchronous accuracy for measurement result plays an important role, conventional Time Synchronization Mechanism based on wire cable medium, life period synchronous error, can not accurately reflect real-time measurement result, cannot meet electromagnetic measurement requirement between well.Through investigating domestic this type of Time Synchronization Mechanism of not yet finding to adopt in electromagnetic measurement between well.
Summary of the invention
For breaking through the limitation of the Time Synchronization Mechanism based on wire cable medium, promote the precision of time synchronized in interborehole measurement, the spatial dimension of expansion interborehole measurement, obtains accurate geological information between well, invents electromagnetic measurement clock synchronization system between this well.Between well, electromagnetic measurement Time Synchronization Mechanism utilizes satellite navigation system to realize the time synchronized in interborehole measurement, and the new technology of synchro measure between a kind of well is provided, and further improves authenticity and the accuracy of interborehole measurement result.
Technical scheme of the present invention is:
Electromagnetic measurement clock synchronization system between well, by two above independently electromagnetic measurement time synchronism apparatus connect and compose, wherein each electromagnetic measurement time synchronism apparatus comprises time synchronized receiving system, time synchronization control device, power supply and three parts of communication interface arrangement; Wherein: time synchronism apparatus receives the signal from navigation satellite, then, by control device, generation time synchronizing signal, controls each electromagnetic measurement time synchronism apparatus co-ordination by this time synchronizing signal, reaches the synchro measure of electromagnetism between well.
Such scheme further comprises: time synchronized receiving system is comprised of reception antenna, receiver module, time synchronized extraction module, time synchronization control device is comprised of time synchronized generation module, time synchronism calibration module, and power supply is comprised of supply module and communication interface module with communication interface arrangement.
Described receiver module comprises filtering, amplification, shaping circuit.
The interborehole measurement clock synchronization system that the present invention is based on satellite navigation system compares that wire cable synchro system has easy construction, round-the-clock, timeliness is high, precision advantages of higher.
It is synchronous that this invention can complete interborehole measurement, and synchronization accuracy is less than 100ns.
Accompanying drawing explanation
Accompanying drawing 1 is electromagnetic measurement clock synchronization system schematic diagram between a kind of well.
Embodiment
Embodiment 1
By reference to the accompanying drawings, the invention will be further described:
With reference to the accompanying drawings 1, this structural design partly comprises: time synchronized receiving system 1, time synchronization control device 2, power supply and communication interface arrangement 3.Time synchronized receiving system 1 is comprised of reception antenna 4, receiver module 5, time synchronized extraction module 6.Time synchronization control device 2 is comprised of time synchronized generation module 7, time synchronism calibration module 8.Power supply is comprised of supply module 9 and communication interface module 10 with communication interface arrangement 3.
The ground survey system that is positioned at two mouthfuls of wells provides low-voltage dc power supply by supply module 9 for receiver module 5, time synchronized extraction module 6, time synchronized generation module 7, time synchronism calibration module 8, communication interface module 9.Reception antenna 4, receives navigation and time signal, and signal, after receiver module 5 filtering, amplification, Shape correction, is gone back the original time signal of protosatellite by time synchronized extraction module 6, then under the control of time synchronized generation module 7, and generation time synchronizing signal.8 pairs of time synchronizing signals of time synchronism calibration module are proofreaied and correct, and the time synchronizing signal after calibrated offers each ground survey system through communication interface module 9, and control survey system coordination work reaches the precise synchronization of interborehole measurement.
Execution mode: the ground survey system that is positioned at two mouthfuls of wells is receiver module, time synchronized extraction module, time synchronized generation module, time synchronism calibration module for power supply by supply module.Time synchronism apparatus receives location and the time signal from satellite, and under the control of time synchronism apparatus, generation time synchronizing signal, controls ground survey system coordination work, reaches the precise synchronization of interborehole measurement.
Embodiment 2
Electromagnetic measurement clock synchronization system between well, comprises time synchronized receiving system, time synchronization control device, power supply and three parts of communication interface arrangement.Wherein time synchronized receiving system is comprised of reception antenna, receiver module, time synchronized extraction module, time synchronization control device is comprised of time synchronized generation module, correction module, and power supply is comprised of supply module and communication interface module with communication interface arrangement.Ground survey system is the module for power supply such as satellite reception, time synchronized extraction, time synchronized generation, time synchronism calibration, communication interface by supply module.Time synchronism apparatus receives the signal from navigation satellite, and then by control device, generation time synchronizing signal, controls ground survey system coordination by this time synchronizing signal and work, and reaches the synchro measure of electromagnetism between well.
Claims (3)
1. electromagnetic measurement clock synchronization system between well, by two above independently electromagnetic measurement time synchronism apparatus connect and compose, wherein each electromagnetic measurement time synchronism apparatus comprises time synchronized receiving system (1), time synchronization control device (2), power supply and (3) three parts of communication interface arrangement; It is characterized in that: time synchronism apparatus (1) receives the signal from navigation satellite, then by control device (2), generation time synchronizing signal, controls each electromagnetic measurement time synchronism apparatus co-ordination by this time synchronizing signal, reaches the synchro measure of electromagnetism between well.
2. electromagnetic measurement clock synchronization system between well according to claim 1, it is characterized in that: time synchronized receiving system (1) is comprised of reception antenna (4), receiver module (5), time synchronized extraction module (6), time synchronization control device (2) is comprised of time synchronized generation module (7), time synchronism calibration module (8), and power supply is comprised of supply module (9) and communication interface module (10) with communication interface arrangement (3).
3. electromagnetic measurement clock synchronization system between well according to claim 2, is characterized in that: described receiver module (5) comprises filtering, amplification, shaping circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310510571.5A CN103595521A (en) | 2013-10-26 | 2013-10-26 | Cross-well electromagnetic measurement time synchronizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310510571.5A CN103595521A (en) | 2013-10-26 | 2013-10-26 | Cross-well electromagnetic measurement time synchronizing system |
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| Publication Number | Publication Date |
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| CN103595521A true CN103595521A (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310510571.5A Pending CN103595521A (en) | 2013-10-26 | 2013-10-26 | Cross-well electromagnetic measurement time synchronizing system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912270A (en) * | 2014-04-01 | 2014-07-09 | 西安石油大学 | Cross-well logging depth and speed synchronously controlled positioning system and method |
| CN105986808A (en) * | 2015-01-30 | 2016-10-05 | 中石化石油工程技术服务有限公司 | Interwell electromagnetic receiving system |
| CN105986809A (en) * | 2015-01-30 | 2016-10-05 | 中石化石油工程技术服务有限公司 | Interwell electromagnetic transmitting system |
| CN107037487A (en) * | 2016-02-04 | 2017-08-11 | 中石化石油工程技术服务有限公司 | Electromagnetism synchronized measurement system between a kind of well |
-
2013
- 2013-10-26 CN CN201310510571.5A patent/CN103595521A/en active Pending
Non-Patent Citations (4)
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| 张承学 等: "基于GPS同步采样装置的研制及其应用", 《电力系统自动化》 * |
| 曾文冲 等: "井间电磁成像系统应用研究", 《地球物理学报》 * |
| 邹红艳: "电力系统GPS同步授时装置设计及综合校时方案研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑（月刊）》 * |
| 郭红旗 等: "XBH2000井间电磁成像测井系统", 《石油仪器》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912270A (en) * | 2014-04-01 | 2014-07-09 | 西安石油大学 | Cross-well logging depth and speed synchronously controlled positioning system and method |
| CN105986808A (en) * | 2015-01-30 | 2016-10-05 | 中石化石油工程技术服务有限公司 | Interwell electromagnetic receiving system |
| CN105986809A (en) * | 2015-01-30 | 2016-10-05 | 中石化石油工程技术服务有限公司 | Interwell electromagnetic transmitting system |
| CN107037487A (en) * | 2016-02-04 | 2017-08-11 | 中石化石油工程技术服务有限公司 | Electromagnetism synchronized measurement system between a kind of well |
| CN107037487B (en) * | 2016-02-04 | 2023-06-20 | 中国石油化工集团有限公司 | An Interwell Electromagnetic Synchronous Measurement System |
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Application publication date: 20140219 |
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