DE2818656A1 - Wideband cable network communication system - consists of insulated light conductors twisted with another light conductor and with two insulated metal wires - Google Patents
Wideband cable network communication system - consists of insulated light conductors twisted with another light conductor and with two insulated metal wiresInfo
- Publication number
- DE2818656A1 DE2818656A1 DE19782818656 DE2818656A DE2818656A1 DE 2818656 A1 DE2818656 A1 DE 2818656A1 DE 19782818656 DE19782818656 DE 19782818656 DE 2818656 A DE2818656 A DE 2818656A DE 2818656 A1 DE2818656 A1 DE 2818656A1
- Authority
- DE
- Germany
- Prior art keywords
- communication system
- broadband
- cable network
- network
- insulated
- 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.)
- Pending
Links
- 239000004020 conductor Substances 0.000 title claims abstract description 18
- 239000002184 metal Substances 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 239000000835 fiber Substances 0.000 claims description 8
- 239000013307 optical fiber Substances 0.000 claims description 5
- 230000005693 optoelectronics Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/69—Optical systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
- H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
- H04H60/93—Wired transmission systems
- H04H60/94—Telephonic networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4416—Heterogeneous cables
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0028—Local loop
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Optical Communication System (AREA)
Abstract
Description
BreitbandkommunikationssystemBroadband communication system
Die Erfindung bezieht sich auf ein Breitbandkommunikationssystem mit einem zwischen einer Zentrale und einer Vielzahl von Teilnehmeranschlüssen verlegten Breitbandkabelnetz sowie unter zusätzlicher Einbeziehung des öffentlichen Fernsprechnetzes, über dessen Vermittlungsstelle die Zentrale von Jedem einzelnen Teilnehmeranschluß aus ansteuerbar ist.The invention relates to a broadband communication system one laid between a central office and a large number of subscriber lines Broadband cable network as well as with the additional inclusion of the public telephone network, the central office of each individual subscriber line via its exchange can be controlled from.
Für das Verteilnetz von Gemeinschaftsantennen- und Kabelfernsehanlagen sind verschiedene Netz strukturen entwickelt worden, die unter der Bezeichnung Baumnetz, Sternnetz, Stern-Baumnetz, Baum-Sternnetz usw. bekanntgeworden sind. Es ist ferner bekannt, daß z.B. für Einweg-Kabelfernsehanlagen eine reineBaumstruktur am wirtschaftlichsten ist, weil sie den geringsten Kabelaufwand erfordert. Andererseits sind der Baumstruktur hinsichtlich der Ubertragungskapazität enge Grenzen gesetzt.For the distribution network of community antenna and cable television systems various network structures have been developed, which are known as tree networks, Star network, star-tree network, tree-star network, etc. have become known. It is further It is known that, for example, for one-way cable television systems, a tree structure is most economical is because it requires the least amount of cables. The other hand are the tree structure set narrow limits with regard to the transmission capacity.
Eine Alternative zum Baumnetz bietet die Sternstruktur, bei der von einer Zentrale zu Jedem Teilnehmer je eine eigene individuelle übertragungsleitung gelegt wird.The star structure offers an alternative to the tree network, at that from a central office to each participant has its own individual transmission line is placed.
Diese Sternstruktur ist zwar hinsichtlich des Kabelaufwandes sehr kostenintensiv, dürfte aber in naher Zukunft mit der Einführung der Glasfasertechnik erheblich an Bedeutung gewinnen. Mit Glasfaserkabeln bzw. Lichtwellenleitern lassen sich nämlich die bei Kabelfernsehnetzen üblicherweise auftretenden Maximalentfernungen zwischen der Zentrale und dem am weitesten entfernten Teilnehmeranschluß aufgrund der gingen Dämpfung der Lichtwellenleiter ohne Zwischenverstärkung überbrücken.This star structure is very complex in terms of cable expensive, but is likely to come with the introduction of fiber optic technology in the near future gain significantly in importance. Leave with fiber optic cables or fiber optic cables namely, the maximum distances that usually occur in cable television networks between the center and the most distant subscriber line due to the attenuation of the fiber optic cables went by bridging without intermediate amplification.
Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, ein Breitbandkommunkationssystem der eingangs genannten Art hinsichtlich der Netzstruktur und der verwendeten Ubertragungsmedien möglichst optimal zu gestalten.The present invention is now based on the object of a broadband communication system of the type mentioned at the beginning with regard to the network structure and the transmission media used to make it as optimal as possible.
Gemäß der Erfindung wird diese Aufgabe in vorteilhafter Weise dadurch gelöst, daß das Breitbandkabelnetz aus Lichtwellenleitern aufgebaut ist und eine dem öffentlichen Fernsprechnetz identische Sternstruktur aufweist und daß die Lichtwellenleiter des Breitbandkabelnetzes und die metallenen Leiter des Fernsprechnetzes derart zu einzelnen, den Jeweiligen Teilnehmersträngen zugeordneten Grundeinheiten zusammengefaßt sind, daß ein mit einem Isolierstoffmantel umhüllter Lichtwellenleiter mit wenigstens einem weiteren derartigen Lichtwellenleiter und/oder mit zwei isolierten Metalleitern verseilt ist.According to the invention this object is advantageously achieved solved that the broadband cable network is made up of optical fibers and one the public telephone network has an identical star structure and that the optical waveguide of the broadband cable network and the metal conductors of the telephone network in such a way individual basic units assigned to the respective subscriber lines are that an optical waveguide covered with an insulating jacket with at least another such optical waveguide and / or with two isolated metal conductors is stranded.
Der Vorteil eines derart ausgebildeten Breitbandkommunikationssystems besteht dabei vor allem darin, daß das breitbandige Lichtwellenleiter-Netz mit dem von Haus aus in Sternstruktur aufgebauten öffentlichen Fernsprechnetz verknüpft wird, wo durch sich die Kosten für die Kabelverlegung erheblich reduzieren, da beide Ubertragungsmedien - Lichtwellenleiter und Metalleiter - in einem gemeinsamen Kabelschacht verlegt werden können.The advantage of a broadband communication system designed in this way consists mainly in the fact that the broadband fiber optic network with the linked to the public telephone network built in a star structure from the outset is where, by significantly reducing the cost of laying cables, as both Transmission media - fiber optic cables and metal cables - in a common cable duct can be relocated.
Vorteilhafte Ausgestaltungen des Erfindungsgedankens ergeben sich aus den Merkmalen der Unteransprüche.Advantageous refinements of the inventive concept result from the features of the subclaims.
Im folgenden wird die Erfindung an Hand der Zeichnung noch näher erläutert. Dabei zeigen Fig. 1 den prinzipiellen Aufbau eines Breitbandkommunikationssystems gemäß der Erfindung, Fig. 2 eine Kabelgrundeinheit, im Querschnitt dargestellt, zur Verwendung in einem Breitbandkommunikationssystem gemäß Fig. 1, Fig. 3 ein aus mehreren Grundeinheiten gemäß Fig. 2 zusammengesetztes Kabelbündel.The invention is explained in more detail below with reference to the drawing. 1 shows the basic structure of a broadband communication system according to the invention, Fig. 2 shows a cable base unit, shown in cross section, for use in a broadband communication system according to FIG. 1, FIG. 3 on several basic units according to FIG. 2 assembled cable bundle.
Die Fig. 1 zeigt den prinzipiellen Aufbau eines Breitbandkommunikationssystems, dessen Kabelnetz als Sternnetz ausgebildet ist, so daß Jeder Teilnehmeranschluß 1 über ein eigenes Teilnehmerkabel mit der Zentrale 2 verbunden ist. In der Zeichnung ist aus Gründen der Ubersichtlichkeit nur ein Ausschnitt aus dem Sternnetz dargestellt. Jedes Teilnehmerkabel enthält wenigstens einen Lichtwellenleiter 3, über den die breitbandige Signalinformation, insbesondere ein Fernsehsignal, von der Zentrale 2 zu Je einem Teilnehmeranschluß 1 übertragen wird, während zur Übertragung schmalbandiger Dienste,z.B. Sprachsignale, Daten, zusätzlich ein weiteres Netz in Form des öffentlichen Fernsprechnetzes vorgesehen ist. Die Vermittlungsstelle 4 dieses öffentlichen Fernsprechnetzes ist zum Zwecke der Übertragung von Steuersignalen mit der Zentrale 1 des Breitbandkommunikationssystems verbunden. Das Breitbandkabelnetz und das Fernsprechnetz weisen zweckmäßig die gleiche Sternstruktur auf, so daß die Übertragungsmedien der beiden Netze - d.h. die Lichtwellenleiter 3 des Breitbandnetzes und die Metalleiter 5 des öffentlichen Fernsprechnetzes - in einem gemeinsamen Kabelschacht verlegt werden können. Lichtwellenleiter 3 und Metalleiter 5 bilden dabei pro Teilnehmerstrang je eine Grundeinheit, während mehrere Grundeinheiten ihrerseits wieder zu ein oder mehreren von der Zentrale 2 abgehenden Grundbündeln zusammengefaßt sind. Im Zuge des Übertragungsweges werden dann diese Grundbündel mittels Spleißmuffen 6 wieder in kleinere Bündel bzw. in einzelne Grundeinheiten aufgetrennt. Die Spleißmuffen 6 bestehen jeweils aus zwei Einheiten 6a, 6b, die einerseits den Lichtwellenleitern 3 und andererseits den Metalleitern 5 zugeordnet sind. Für jeden Teilnehmeranschluß 1 ist wenigstens eine Grundeinheit vorgesehen, wobei der bzw. die Lichtwellenleiter 3 an den optoelektrischen Wandler 7 eines Breitbandendgerätes 8, z.B. eines Fernsehempfangsgerätes angeschaltet werden, während die Metalleiter 5 mit dem Teilnehmer-Telefonapparat 9 verbunden sind. Der Fernsprechanschluß wird dabei wie üblich netzunabhängig von einer Amtsbatterie gespeist, während der optoelektrische Wandler 7 ebenso wie das Endgerät 8 aus einer lokalen Energiequelle, vorzugsweise aus dem öffentlichen Stromnetz, gespeist wird. Da das Fernsprechnetz auch zur Übertragung von Daten, z.B.Fig. 1 shows the basic structure of a broadband communication system, whose cable network is designed as a star network, so that each subscriber line 1 is connected to the control center 2 via its own subscriber cable. In the drawing For the sake of clarity, only a section of the star network is shown. Each subscriber cable contains at least one optical fiber 3 through which the broadband signal information, in particular a television signal, from the control center 2 is transmitted to one subscriber line 1 each, while narrowband for transmission Services, e.g. Voice signals, data, and an additional public network Telephone network is provided. The exchange 4 of this public telephone network is for the purpose of transmitting control signals to the center 1 of the broadband communication system tied together. The broadband cable network and the telephone network are expediently the same Star structure, so that the transmission media of the two networks - i.e. the optical fibers 3 of the broadband network and the metal wires 5 of the public telephone network - laid in a common cable duct can be. optical fiber 3 and metal conductor 5 each form a basic unit per subscriber line, while several basic units in turn to one or more from the control center 2 outgoing basic bundles are summarized. In the course of the transmission path will be then this basic bundle by means of splice sleeves 6 again into smaller bundles or in separate basic units. The splice sleeves 6 each consist of two Units 6a, 6b, on the one hand the optical waveguides 3 and on the other hand the metal conductors 5 are assigned. For each subscriber line 1 there is at least one basic unit provided, wherein the optical waveguide (s) 3 to the opto-electrical converter 7 of a broadband terminal 8, e.g. a television receiver, can be switched on, while the metal conductors 5 are connected to the subscriber telephone set 9. Of the Telephone connection is fed as usual from a network-independent battery, while the opto-electrical converter 7 as well as the terminal 8 from a local Energy source, preferably from the public power grid, is fed. Since that Telephone network also for the transmission of data, e.g.
für den Bildschirmtextdienst, genutzt werden kann, ist vor dem Teilnehmer-Telefonapparat 9 ein Wechselschalter 10 vorgesehen, über den das Fernsprechnetz wahlweise am Telefonapparat 9 oder über ein Modem 11 an das Breitbandendgerät 8 angeschaltet werden kann.for the screen text service, is in front of the subscriber telephone set 9 a changeover switch 10 is provided, via which the telephone network can be optionally connected to the telephone set 9 or via a modem 11 to the broadband terminal 8 can be connected.
Die Fig. 2 zeigt eine im Querschnitt dargestellte Teilnehmerkabel-Grundeinheit 12, wie sie in einem Breitbandkommunikationssystem gemäß Fig. 1 verwendet wird. Diese Grundeinheit 12 besteht beispielsweise aus zwei umhüllten Lichtwellenleitern 3 und zwei isolierten Metallinsbesondere Kupferleitern 5, wobei beide Leiterpaare zweckmäßig gekreuzt zueinander angeordnet sind. Während die Lichtwellenleiter 3 für die Ubertragung breitbandiger Signale vorgesehen sind, werden über die Metalleiter 5 Telefonsignale einschließlich der erforderlichen Wählsignale sowie die für die Teilnehmer-Telefonapparate notwendige Fernspeisespannung übertragen. Lichtwellenleiter 3 und Metalleiter 5 sind zweckmäßig miteinander verseilt, wodurch die mechanische Festigkeit der gesatten Kabelanordnung wesentlich verbessert wird.2 shows a subscriber cable base unit shown in cross section 12, as used in a broadband communication system according to FIG. This basic unit 12 consists, for example, of two sheathed optical waveguides 3 and two insulated metal, in particular copper conductors 5, both conductor pairs are appropriately arranged crossed to one another. While the fiber optics 3 for the transmission of broadband signals are provided via the metal conductor 5 Telephone signals including the required dial signals as well transmit the remote supply voltage required for the subscriber telephone sets. Optical waveguides 3 and metal conductors 5 are expediently stranded with one another, as a result of which the mechanical strength of the full cable arrangement is significantly improved.
Mehrere dieser Grundeinheiten 12 lassen sich Je nach Bedarf zu größeren Bündeln zusammenfassen, wobei, wie das in Fig. 3 dargestellte Ausführungsbeispiel zeigt, zunächst ein Kern mit vier Grundeinheiten gebildet wird, um den sich dann ein Ring mit weiteren 10 Grundeinheiten schart, so daß ein Bündel 13 mit insgesamt 14 Grundeinheiten entsteht.Several of these basic units 12 can be made larger as required Combine bundles, like the embodiment shown in FIG shows, first a core with four basic units is formed, around which then a ring with another 10 basic units flocks, so that a bundle 13 with a total of 14 basic units are created.
3 Patentansprüche 3 Figuren3 claims 3 figures
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782818656 DE2818656A1 (en) | 1978-04-27 | 1978-04-27 | Wideband cable network communication system - consists of insulated light conductors twisted with another light conductor and with two insulated metal wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782818656 DE2818656A1 (en) | 1978-04-27 | 1978-04-27 | Wideband cable network communication system - consists of insulated light conductors twisted with another light conductor and with two insulated metal wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2818656A1 true DE2818656A1 (en) | 1979-10-31 |
Family
ID=6038222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19782818656 Pending DE2818656A1 (en) | 1978-04-27 | 1978-04-27 | Wideband cable network communication system - consists of insulated light conductors twisted with another light conductor and with two insulated metal wires |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2818656A1 (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3218894A1 (en) * | 1981-05-26 | 1982-12-23 | Naamloze Vennootschap Philips' Gloeilampenfabrieken, 5621 Eindhoven | BROADBAND COMMUNICATION SYSTEM WITH AN OPTICAL BROADBAND CABLE NETWORK |
| DE3144205A1 (en) * | 1981-11-06 | 1983-05-19 | Siemens AG, 1000 Berlin und 8000 München | Optical fibre cable for a distribution network constructed in the form of a star |
| EP0078843A4 (en) * | 1981-05-14 | 1984-09-19 | Times Fiber Communications | Information distribution system. |
| EP0530808A3 (en) * | 1991-09-03 | 1994-03-23 | Hitachi Ltd | |
| DE4433898A1 (en) * | 1994-09-22 | 1996-03-28 | Siemens Ag | Broadband information system for interactive services |
| NL1011054C2 (en) * | 1999-01-18 | 2000-07-19 | Ebcon Materials Nv | Modular cable and modular fiber access system. |
| WO2005114285A1 (en) * | 2004-05-19 | 2005-12-01 | Schlumberger Canada Ltd. | Optical fiber cables for wellbore applications |
| US7424176B2 (en) | 2005-12-20 | 2008-09-09 | Schlumberger Technology Corporation | Optical fiber termination apparatus and methods of use, and optical fiber termination process |
| US7617873B2 (en) | 2004-05-28 | 2009-11-17 | Schlumberger Technology Corporation | System and methods using fiber optics in coiled tubing |
| US7654318B2 (en) | 2006-06-19 | 2010-02-02 | Schlumberger Technology Corporation | Fluid diversion measurement methods and systems |
| US8522869B2 (en) | 2004-05-28 | 2013-09-03 | Schlumberger Technology Corporation | Optical coiled tubing log assembly |
| US9500058B2 (en) | 2004-05-28 | 2016-11-22 | Schlumberger Technology Corporation | Coiled tubing tractor assembly |
| US9540889B2 (en) | 2004-05-28 | 2017-01-10 | Schlumberger Technology Corporation | Coiled tubing gamma ray detector |
| US9789544B2 (en) | 2006-02-09 | 2017-10-17 | Schlumberger Technology Corporation | Methods of manufacturing oilfield degradable alloys and related products |
| US10062476B2 (en) | 2012-06-28 | 2018-08-28 | Schlumberger Technology Corporation | High power opto-electrical cable with multiple power and telemetry paths |
| US10087717B2 (en) | 2011-10-17 | 2018-10-02 | Schlumberger Technology Corporation | Dual use cable with fiber optics for use in wellbore operations |
| US10316616B2 (en) | 2004-05-28 | 2019-06-11 | Schlumberger Technology Corporation | Dissolvable bridge plug |
| US10522271B2 (en) | 2016-06-09 | 2019-12-31 | Schlumberger Technology Corporation | Compression and stretch resistant components and cables for oilfield applications |
| US10809413B2 (en) | 2014-08-29 | 2020-10-20 | Schlumberger Technology Corporation | Fiber optic magneto-responsive sensor assembly |
| US11725468B2 (en) | 2015-01-26 | 2023-08-15 | Schlumberger Technology Corporation | Electrically conductive fiber optic slickline for coiled tubing operations |
-
1978
- 1978-04-27 DE DE19782818656 patent/DE2818656A1/en active Pending
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0078843A4 (en) * | 1981-05-14 | 1984-09-19 | Times Fiber Communications | Information distribution system. |
| DE3218894A1 (en) * | 1981-05-26 | 1982-12-23 | Naamloze Vennootschap Philips' Gloeilampenfabrieken, 5621 Eindhoven | BROADBAND COMMUNICATION SYSTEM WITH AN OPTICAL BROADBAND CABLE NETWORK |
| US4464012A (en) * | 1981-05-26 | 1984-08-07 | U.S. Philips Corporation | Broad-band communication system comprising an optical broad-band cable network |
| DE3144205A1 (en) * | 1981-11-06 | 1983-05-19 | Siemens AG, 1000 Berlin und 8000 München | Optical fibre cable for a distribution network constructed in the form of a star |
| EP0530808A3 (en) * | 1991-09-03 | 1994-03-23 | Hitachi Ltd | |
| DE4433898A1 (en) * | 1994-09-22 | 1996-03-28 | Siemens Ag | Broadband information system for interactive services |
| NL1011054C2 (en) * | 1999-01-18 | 2000-07-19 | Ebcon Materials Nv | Modular cable and modular fiber access system. |
| WO2000042714A1 (en) * | 1999-01-18 | 2000-07-20 | N.V. Ebcon/Liaison | Modular cable and modular fibre access system |
| WO2005114285A1 (en) * | 2004-05-19 | 2005-12-01 | Schlumberger Canada Ltd. | Optical fiber cables for wellbore applications |
| US9540889B2 (en) | 2004-05-28 | 2017-01-10 | Schlumberger Technology Corporation | Coiled tubing gamma ray detector |
| US10697252B2 (en) | 2004-05-28 | 2020-06-30 | Schlumberger Technology Corporation | Surface controlled reversible coiled tubing valve assembly |
| US10815739B2 (en) | 2004-05-28 | 2020-10-27 | Schlumberger Technology Corporation | System and methods using fiber optics in coiled tubing |
| US8522869B2 (en) | 2004-05-28 | 2013-09-03 | Schlumberger Technology Corporation | Optical coiled tubing log assembly |
| US9500058B2 (en) | 2004-05-28 | 2016-11-22 | Schlumberger Technology Corporation | Coiled tubing tractor assembly |
| US7617873B2 (en) | 2004-05-28 | 2009-11-17 | Schlumberger Technology Corporation | System and methods using fiber optics in coiled tubing |
| US9708867B2 (en) | 2004-05-28 | 2017-07-18 | Schlumberger Technology Corporation | System and methods using fiber optics in coiled tubing |
| US10316616B2 (en) | 2004-05-28 | 2019-06-11 | Schlumberger Technology Corporation | Dissolvable bridge plug |
| US10077618B2 (en) | 2004-05-28 | 2018-09-18 | Schlumberger Technology Corporation | Surface controlled reversible coiled tubing valve assembly |
| US7424176B2 (en) | 2005-12-20 | 2008-09-09 | Schlumberger Technology Corporation | Optical fiber termination apparatus and methods of use, and optical fiber termination process |
| US9789544B2 (en) | 2006-02-09 | 2017-10-17 | Schlumberger Technology Corporation | Methods of manufacturing oilfield degradable alloys and related products |
| US7654318B2 (en) | 2006-06-19 | 2010-02-02 | Schlumberger Technology Corporation | Fluid diversion measurement methods and systems |
| US10087717B2 (en) | 2011-10-17 | 2018-10-02 | Schlumberger Technology Corporation | Dual use cable with fiber optics for use in wellbore operations |
| US10062476B2 (en) | 2012-06-28 | 2018-08-28 | Schlumberger Technology Corporation | High power opto-electrical cable with multiple power and telemetry paths |
| US10809413B2 (en) | 2014-08-29 | 2020-10-20 | Schlumberger Technology Corporation | Fiber optic magneto-responsive sensor assembly |
| US11725468B2 (en) | 2015-01-26 | 2023-08-15 | Schlumberger Technology Corporation | Electrically conductive fiber optic slickline for coiled tubing operations |
| US10522271B2 (en) | 2016-06-09 | 2019-12-31 | Schlumberger Technology Corporation | Compression and stretch resistant components and cables for oilfield applications |
| US11335478B2 (en) | 2016-06-09 | 2022-05-17 | Schlumberger Technology Corporation | Compression and stretch resistant components and cables for oilfield applications |
| US11776712B2 (en) | 2016-06-09 | 2023-10-03 | Schlumberger Technology Corporation | Compression and stretch resistant components and cables for oilfield applications |
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