GB1341426A - System for transmitting information - Google Patents
System for transmitting informationInfo
- Publication number
- GB1341426A GB1341426A GB1747871A GB1747871A GB1341426A GB 1341426 A GB1341426 A GB 1341426A GB 1747871 A GB1747871 A GB 1747871A GB 1747871 A GB1747871 A GB 1747871A GB 1341426 A GB1341426 A GB 1341426A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- station
- line
- work
- work station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/20—Conducting electric current to electrodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
- H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/31—Immersed structures, e.g. submarine structures
Abstract
1341426 Selective signalling COMPAGNIE FRANCAISE DES PETROLES and SOC NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION 27 May 1971 [24 June 1970] 17478/71 Heading G4H [Also in Divisions H1 and H4] In a system for transmitting information between an underwater work station and a central telemetering and remote control station interconnected by a metal pipe-line, the pipeline is electrically conductive along its length and has an electrically insulating covering over its external surface and an electrical connection is provided at each station to the surrounding water, a transmitter and/or receiver being electrically connected to the pipe-line at each station, and a sacrificial anode provides corrosion protection. The circuit through the pipeline is completed through the water. The work station may be a well head in an underwater oil field. Digital information regarding the pressure of gas or crude oil, gas content of crude oil, temperature and state of control valves is sent from the work station to the central station for display and valve control information is sent back, either simultaneously (using modulation of different carrier frequencies) or alternately. Generally, signalling is binary using an on/off, frequency or phase modulated carrier, or D.C. amplitude, e.g. by varying the load line impedance with the two states corresponding to open and short-circuited end respectively. The electrical connection at each station to the pipe-line may be direct, or via a winding on a toroidal magnetic core through which the pipeline passes. A plurality of work stations may be connected to the central station by separate respective pipe-lines, or pipe-lines may be shared between work stations in which case different work stations using the same pipeline respond (perhaps simultaneously) to respective frequencies, or time-division multiplexing is used. In time-division multiplexing, detection of a calling frequency at a work station enables an address decoder, and if the address now received is that of this work station the rest of the message is decoded to control a programmer which routes commands and causes transmission to the central station of sensed information. Power consumption is reduced by supplying power to most of the equipment at the work station only when necessary. Sensing of some critical parameters is continuous, an alarm condition causing transmission of an alarm signal at any time. At the central station, a control desk selects the well to be called and the commands to be sent. Cathodic protection of the pipe-lines is provided by sacrificial anodes connected to the pipe-lines via chokes to prevent loss of the transmitted signal. D.C. delivered by sacrificial anodes may power repeaters for the signal, a repeater being linked to the pipe-line via two windings around respective toroidal magnetic cores, the two windings being in series and the pipe-line threading the two cores, the repeater using a transistorized amplifier connected between the sacrificial anode and a point on the pipe-line between the cores, as well as to the two ends of the series of two windings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7023365A FR2097265A5 (en) | 1970-06-24 | 1970-06-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1341426A true GB1341426A (en) | 1973-12-19 |
Family
ID=9057717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1747871A Expired GB1341426A (en) | 1970-06-24 | 1971-05-27 | System for transmitting information |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE768707A (en) |
CA (1) | CA969480A (en) |
FR (1) | FR2097265A5 (en) |
GB (1) | GB1341426A (en) |
NL (1) | NL7108618A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2759512A1 (en) * | 1997-02-11 | 1998-08-14 | Jean Marc Vernet | Remote surveillance method for parasitic currents on metal installation |
WO1999054700A2 (en) * | 1998-04-20 | 1999-10-28 | Horace Rekunyk | Infrared remote monitoring system for leak |
WO2000008438A1 (en) * | 1998-08-08 | 2000-02-17 | Greg Jones | Monitoring the corrosion of pipelines by evaluting the noise in data signals transmitted via the pipeline |
GB2317797B (en) * | 1996-09-26 | 2001-07-25 | British Gas Plc | Pipeline communication system |
GB2377131A (en) * | 2001-04-23 | 2002-12-31 | Schlumberger Holdings | Subsea communications |
RU2667350C2 (en) * | 2016-07-12 | 2018-09-18 | Акционерное Общество "Научно-исследовательский институт автоматизированных систем и комплексов связи "Нептун" | Shipboard backup information transmission system |
CN113062728A (en) * | 2021-03-30 | 2021-07-02 | 中原工学院 | Real-time wireless receiving method and system for data while drilling of deep coal drilling |
CN113062728B (en) * | 2021-03-30 | 2024-04-19 | 中原工学院 | Real-time wireless receiving method and system for while-drilling data of deep coal drilling |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2408788A1 (en) * | 1977-10-20 | 1979-06-08 | Inst Prirodnykh Gazov Vniiga | Surveillance function control system for transmission network - operates using transceiver units to supply and repeat pulse time control signal |
FR2745133B1 (en) * | 1996-02-20 | 1998-05-07 | Vernet Jean Marc | METHOD AND DEVICE FOR TELEMETRY ON A METAL WORK PROTECTED BY DRAWING |
-
1970
- 1970-06-24 FR FR7023365A patent/FR2097265A5/fr not_active Expired
-
1971
- 1971-05-27 GB GB1747871A patent/GB1341426A/en not_active Expired
- 1971-06-18 BE BE768707A patent/BE768707A/en not_active IP Right Cessation
- 1971-06-22 CA CA116,354A patent/CA969480A/en not_active Expired
- 1971-06-23 NL NL7108618A patent/NL7108618A/xx unknown
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2317797B (en) * | 1996-09-26 | 2001-07-25 | British Gas Plc | Pipeline communication system |
FR2759512A1 (en) * | 1997-02-11 | 1998-08-14 | Jean Marc Vernet | Remote surveillance method for parasitic currents on metal installation |
WO1999054700A2 (en) * | 1998-04-20 | 1999-10-28 | Horace Rekunyk | Infrared remote monitoring system for leak |
WO1999054700A3 (en) * | 1998-04-20 | 2000-04-13 | Horace Rekunyk | Infrared remote monitoring system for leak |
WO2000008438A1 (en) * | 1998-08-08 | 2000-02-17 | Greg Jones | Monitoring the corrosion of pipelines by evaluting the noise in data signals transmitted via the pipeline |
US6718267B1 (en) | 1998-08-08 | 2004-04-06 | Greg Jones | Monitoring the corrosion of pipelines by evaluting the noise in data signals transmitted via the pipeline |
GB2377131A (en) * | 2001-04-23 | 2002-12-31 | Schlumberger Holdings | Subsea communications |
GB2377131B (en) * | 2001-04-23 | 2006-01-25 | Schlumberger Holdings | Subsea communication systems and techniques |
US7123162B2 (en) | 2001-04-23 | 2006-10-17 | Schlumberger Technology Corporation | Subsea communication system and technique |
RU2667350C2 (en) * | 2016-07-12 | 2018-09-18 | Акционерное Общество "Научно-исследовательский институт автоматизированных систем и комплексов связи "Нептун" | Shipboard backup information transmission system |
CN113062728A (en) * | 2021-03-30 | 2021-07-02 | 中原工学院 | Real-time wireless receiving method and system for data while drilling of deep coal drilling |
CN113062728B (en) * | 2021-03-30 | 2024-04-19 | 中原工学院 | Real-time wireless receiving method and system for while-drilling data of deep coal drilling |
Also Published As
Publication number | Publication date |
---|---|
CA969480A (en) | 1975-06-17 |
FR2097265A5 (en) | 1972-03-03 |
DE2130851B2 (en) | 1975-07-17 |
BE768707A (en) | 1971-11-03 |
NL7108618A (en) | 1971-12-28 |
DE2130851A1 (en) | 1971-12-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |