CN202832514U - Well-logging data transmission system - Google Patents
Well-logging data transmission system Download PDFInfo
- Publication number
- CN202832514U CN202832514U CN 201220558589 CN201220558589U CN202832514U CN 202832514 U CN202832514 U CN 202832514U CN 201220558589 CN201220558589 CN 201220558589 CN 201220558589 U CN201220558589 U CN 201220558589U CN 202832514 U CN202832514 U CN 202832514U
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- Prior art keywords
- well
- ground
- data transmission
- downhole
- transformer
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- Expired - Fee Related
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Abstract
The utility model discloses a well-logging data transmission system and relates to a device which is used for transmitting a measurement signal or a control signal from the interior of a well to the ground or from the ground to the interior of the well. The well-logging data transmission system is characterized by comprising an industrial personal computer, a ground compact peripheral component interconnect (cPCI) board, a ground drive board and a ground transformer which are connected in sequence. The well-logging data transmission system further comprises a downhole tool, a downhole control board, a downhole modem, a downhole drive board and a downhole transformer. The ground transformer is connected with the downhole transformer through an electric cable. Proved by tests, the well-logging data transmission system is capable of achieving high reliability data transmission rate of 90 kilobits per second on the Canadian military electronics standards agency (Camesa) well-logging electric cable at the height of 7000 meters. When the transformers is in a Mode-II people-link mode, if the impedance is matched well, the highest data transmission rate on the Camesa well-logging electric cable at the height of 7000 meters can reach to 1.1 megabit per second, so that high-speed transmission of the date on the electric cable is achieved.
Description
Technical field
The utility model relate to a kind of from well the device of transmission measurement signal or control signal to ground or in from ground to the well.
Background technology
The data volume of well logging is increasing to become the outstanding problem that logger need to solve gradually so that improve the cable data transfer rate, and therefore, exploitation high power capacity, high efficiency logging cable data transmission system have become the study hotspot of imaging logging techniques.The present world three large Logging Companies, Schlumberger (MAXIS 1), Atlas (ECLIPS), Halliburton (EXCEL-2000/LOG-IQ) have Imaging Logging System separately, wherein LOG-IQ employing ADSL technology has realized the cable data transfer rate of 800 kbit/s, has represented the international most advanced level of logging technique.Domesticly starting late aspect the development of Imaging Logging System, with the certain gap of external existence.The EILog High-performance Well Logging System of China Petroleum and Gas Corp.'s development adopts the modulation system of COFDM (COFDM), message transmission rate can reach 430 kbit/s, and utilize the error correction of TCM, improve the reliability of transfer of data.Data volume has been alleviated greatly and the problem of transmittability deficiency to a certain extent in this system, but further improves the logging system performance, dwindles with external gap, also needs to improve message transmission rate.
Summary of the invention
The utility model aims to provide a kind of Datrex system of realizing the data transmission bauds that 900 kbit/s are above.
A kind of Datrex system described in the utility model, it is characterized in that comprising the Industrial Personal Computer (IPC) that links to each other successively, ground cPCI plate, ground drive plate and ground level transformer, also comprise the downhole instrument that links to each other successively, down-hole control board, downhole modem, down-hole drive plate and down-hole transformer, wherein ground level transformer links to each other by cable with the down-hole transformer.
Preferably, downhole modem is comprised of down-hole modulation panel and down-hole solution tuned plate.
Through realizing proof, system of the present utility model can realize the high reliability data transfer rate of 900 kbit/s on the Camesa of 7 000 m logging cable.When transformer be Mode-II connect people's pattern the time, if the maximum data transfer rate that impedance matching well then can be arrived is 1.1 Mbit/s, realized the high-speed transfer of data at cable on the Camesa of 7 000 m logging cable.
Description of drawings
Fig. 1 is the structural representation of embodiment one.
The specific embodiment
Embodiment one.
A kind of Datrex system of the present utility model, comprise the Industrial Personal Computer (IPC) 1 that links to each other successively, ground cPCI plate 2, ground drive plate 3 and ground level transformer 4, also comprise the downhole instrument 11 that links to each other successively, down-hole control board 10, downhole modem, down-hole drive plate 7 and down-hole transformer 6, wherein ground level transformer 4 links to each other by cable 5 with down-hole transformer 6.Wherein, downhole modem is comprised of down-hole modulation panel 8 and down-hole solution tuned plate 9.
Use said system, 7 core armouring Camesa logging cables at different length have carried out the performance test of logging cable high speed data transmission system respectively.Test condition is as follows.
Cable access module: Mode-I, Mode-II.
Impedance matching value: 50 Q.
Transformer turn ratio: 1:1.
Cable length: 4 000,5 500,6 000,7 000 m.
Cable meets people's pattern Mode-1 and Mode-II and is used for uploading data and transmitting order to lower levels, and Mode-I uses cable core 2,5 pairs 3,6, and Mode-II uses the centre cap of 7 pairs of Mode-1 transformers of cable core.When impedance matching is good.The Bit Allocation in Discrete figure of up channel transmission characteristic (amplitude versus frequency characte and phase-frequency characteristic), signal to noise ratio (SNR) and the subchannel of the Camesa logging cable of 7 000 m that test obtains under the Mode-I.In the up subchannel, the 36th work song carrier wave is pilot tone, is used for realizing that system clock is synchronous, is 43.956 kHz places in the low frequency end frequency therefore, does not carry out signal to noise ratio and Bit Allocation in Discrete.In the case, the channel uplink message transmission rate that test obtains is 944.01 kbit/s, and downlink transfer speed is 32.55 kbit/s, and the bit error rate is less than 5E-8.
Claims (2)
1. Datrex system, it is characterized in that comprising the Industrial Personal Computer (IPC) (1) that links to each other successively, ground cPCI plate (2), ground drive plate (3) and ground level transformer (4), also comprise the downhole instrument (11) that links to each other successively, down-hole control board (10), downhole modem, down-hole drive plate (7) and down-hole transformer (6), wherein ground level transformer (4) links to each other by cable (5) with down-hole transformer (6).
2. Datrex system as claimed in claim 1 is characterized in that downhole modem is comprised of down-hole modulation panel (8) and down-hole solution tuned plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220558589 CN202832514U (en) | 2012-10-29 | 2012-10-29 | Well-logging data transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220558589 CN202832514U (en) | 2012-10-29 | 2012-10-29 | Well-logging data transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832514U true CN202832514U (en) | 2013-03-27 |
Family
ID=47944246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220558589 Expired - Fee Related CN202832514U (en) | 2012-10-29 | 2012-10-29 | Well-logging data transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611076A (en) * | 2018-11-02 | 2019-04-12 | 贝兹维仪器(苏州)有限公司 | A kind of real-time clock synchronous method of well logging device |
-
2012
- 2012-10-29 CN CN 201220558589 patent/CN202832514U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611076A (en) * | 2018-11-02 | 2019-04-12 | 贝兹维仪器(苏州)有限公司 | A kind of real-time clock synchronous method of well logging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHAANXI GAOHUA ZHIBEN CHEMICAL TECHNOLOGY CO., LTD Free format text: FORMER NAME: SHAANXI LIANMENG LOGISTICS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 710065 Shaanxi city of Xi'an province high tech Zone Feng Hui Road No. 36 Oak Street Block B room 10406 Patentee after: SHAANXI GAOHUA ZHIBEN CHEMICAL SCIENCE & TECHNOLOGY CO., LTD. Address before: 710065 Shaanxi city of Xi'an province high tech Zone Feng Hui Road No. 36 Oak Street Block B room 10406 Patentee before: Shaanxi Alliance Logistics Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20131029 |