EP0995877A1 - Méthode et système de transmission d'informations par onde électromagnétique - Google Patents
Méthode et système de transmission d'informations par onde électromagnétique Download PDFInfo
- Publication number
- EP0995877A1 EP0995877A1 EP99402571A EP99402571A EP0995877A1 EP 0995877 A1 EP0995877 A1 EP 0995877A1 EP 99402571 A EP99402571 A EP 99402571A EP 99402571 A EP99402571 A EP 99402571A EP 0995877 A1 EP0995877 A1 EP 0995877A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubes
- transmitter
- receiver
- transmission
- layers
- 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.)
- Granted
Links
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 27
- 238000005755 formation reaction Methods 0.000 claims abstract description 27
- 238000005553 drilling Methods 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000011810 insulating material Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000010292 electrical insulation Methods 0.000 claims abstract description 5
- 238000013178 mathematical model Methods 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims abstract description 3
- 239000007924 injection Substances 0.000 claims abstract description 3
- 238000002955 isolation Methods 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 6
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- 239000007788 liquid Substances 0.000 claims description 3
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- 238000000576 coating method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 239000004459 forage Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 208000031968 Cadaver Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 210000000003 hoof Anatomy 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
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- 230000005855 radiation Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
Definitions
- the invention lies in the field of transmission of information from a hole drilled in the ground to the surface. More specifically, the invention relates to an optimized method of transmission of information between the bottom of a well drilled and the surface, the well being either already drilled and in during production, or during drilling.
- the present invention relates to a method transmission of information from a well drilled at through layers of geological and cased formation at least in part by metal tubes, the method includes placing in said well a information transmitter / receiver operated by the using guided electromagnetic waves created by injecting an electrical signal through a connected dipole conductively to the metal tubes used for guiding waves emitted.
- a information transmitter / receiver operated by the using guided electromagnetic waves created by injecting an electrical signal through a connected dipole conductively to the metal tubes used for guiding waves emitted.
- Isolation can be done by setting place of tubes previously coated with a layer of insulating material.
- the insulation can be carried out by the installation of an insulating material of the type cement to the right of said certain formations in the annular space between the tubes and the formations.
- the invention also relates to a system for transmission of information from a well drilled in layers of geological formation and cased at least partly by metal tubes, the system comprising in said well a transmitter / receiver of information working by means of waves guided electromagnetics created by the injection of a electrical signal by a dipole conductively linked to metal tubes for guiding the waves emitted.
- a transmitter / receiver of information working by means of waves guided electromagnetics created by the injection of a electrical signal by a dipole conductively linked to metal tubes for guiding the waves emitted.
- at least some metal tubes arranged in line with the low resistivity layers include electrical insulation means with said training.
- Insulated tubes can be coated with layer of insulating material.
- Insulating layer may not cover the entire length of the tube.
- the isolation means can understand an insulating material that fills the space annular between the tubes and the conductive formation, the material being the result of the hardening of a liquid composition.
- the transmitter / receiver can be incorporated into the end of a column of production tubes.
- the transmitter / receiver can also be incorporated into the end of a drill string.
- the system according to the invention can be applied to an offshore drilling installation with wellhead underwater.
- a control line of kill-line can be externally isolated electrically from the bottom of the sea to the surface
- Zone 2 generally comprises at least one layer forming tank containing effluents to be produced.
- the land layers 3 which are between layer 2 and the surface, reduce electromagnetic waves in such a way that it is impossible to effectively use the method of known electromagnetic wave transmission.
- the layers 3a and 3b have resistivities much lower than 20 ⁇ .m, for example of the order of a few ⁇ .m, or even less than 1 ⁇ .m.
- zone 3c at one resistivity greater than 20 ⁇ .m, for example a layer salt, a layer commonly encountered in drilling.
- Df ⁇ F log 2 (1 + S / B) with ⁇ F useful modulation bandwidth, S signal and B the noise in the useful band.
- the transmitter E modulates a very low frequency wave, said frequency being chosen low enough that the spread is possible.
- the means of emission use waves of frequency included between 1 Hz and 10 Hz.
- This wave, called frequency carrier is in an exemplary embodiment, modulated depending on the information to be transmitted, by skipping phase 0- ⁇ at a rhythm compatible with the frequency carrier.
- Other types of modulation can be used, without departing from the scope of this invention.
- the modulation rate is of the order of bit / second, but it can be adapted according to transmission needs. In the case of orders from downhole devices such as valves, use length codes adapted to the probability maximum error accepted. Coding can, as appropriate whether or not to be associated with detector codes and error correctors, such as redundant codes cyclic.
- the wave transmitted by the transmitter E is received in surface by the receiver R of which one of the poles is connected at the wellhead and the other pole planted in the ground at sufficient distance from the wellhead.
- E and R can become transmitters in turn and receiver.
- Electronic means send / receive E can be advantageously arranged according to the technology described in document US-A-5394141, cited here with reference.
- a first column of tubes 4 (surface column) is placed in well 1 and generally cemented over its entire height in the surface formation 3a.
- a wellhead 5 installed on the surface column allows to receive the upper end of the other columns, techniques or production, as well as the safety valves.
- a second column 6 is lowered into the drilled hole 7 at from the shoe of the surface column 4 and up the tank cover 2.
- the annular space between hole 7 and casing tube column 6 is usually filled with cement at least to the hoof from the previous column, in this example the shoe the surface column 4.
- a column of tubes of production 8 (tubing), whose role is to go back the effluent to the surface, passes through a packer 9 which seals the tank area relative to the annular space around the tubing 8.
- the P1 and P2 poles of the dipole can be formed by the contact provided by the packer 9 with the metal column 6 and the contact provided by a blade centering device 10 placed higher in the column tubing 8.
- the upper contact is directly made by the contact of the tubing with the column 6, taking into account the annular space generally weak and the geometry of the well.
- a insulating fitting 11, located to the right of the transmitter, can be used in casing column 6 to separate the lower contact P1 of the upper contact P2. But this insulating fitting is not necessary if using the so-called "long dipole" constitution for the antenna transmission or reception. In this case, ensure that the P2 pole is far enough from the pole P1 and there can be no other contact between column 6 and tubings 8 along the length between the poles.
- Tubes, casing or tubing according to the name known in the profession and standardized by API (American Petroleum Institute) include at their two ends a male thread and a sleeve, screwed onto the tube body or integral, including female thread corresponding so that we can assemble them these tubes to form a column.
- the insulating layer will only be deposited on the body of the tube, between the male thread (which obviously can not be covered) and the sleeve. In effect, the layer near the threads would be destroyed by the jaws of the screwing means, and may even be would be inconvenient for the suspension of the column or hanging the jaws.
- the insulating layer can be an epoxy coating loaded with ceramic, by example of the type of coating used as protection anticorrosion on maritime structures, pipelines, the drill rods.
- Figure 2 illustrates the case of the transmission according to the invention during drilling of a well 20 using a drill string 21 fitted of a drilling tool 22 at its end.
- a transmitter / receiver E is generally arranged in the lower part to transmit for example drilling, trajectometry, radiation parameters gamma, temperature, pressure, etc.
- Well 1 is here cased on the surface by a column 23 and a column intermediate 24.
- Zone 25 has low resistivity which too strongly attenuates the transmission by EM between E and R.
- the ring finger between the column 23 and the formation and the ring finger between the column 24 and the formation will be filled with cement insulating.
- the antenna is produced by the part of the lining between the insulating junction of the emitter E and the drilling tool 22. Note that in this case the signal from the transmitter E will be attenuated from E to the isolated or pseudo-isolated zone 27, then of the zone 26 to the surface receiver R.
- a mathematical model propagation taking into account the characteristics electrical of the different casings and formations, allows predetermining the minimum lengths of isolation zones 26 and 27 in order to be able to guarantee the transmission.
- Figure 3 shows an alternative arrangement of the emitter E in the drill string 21 and a example of application of the invention in the case of offshore drilling with an underwater wellhead 29.
- the receiver R is located at the bottom of the sea with one of its receiving poles connected to the subsea wellhead and the other made up of a piece of metal, by example an anchor 37, placed a few tens of meters from the wellhead.
- Communication between the surface and the bottom of the sea is done either by acoustic transmitter, either by electrical conductor installed along the casing.
- Soils 30 near the bottom of water are generally geologically "young" and generally of low resistivity.
- the column of surface 31 is therefore advantageously isolated, according to the invention, on the height corresponding to the formation 30.
- the emitter E is here arranged at the end of a determined length of cable 32 to create a "long dipole".
- the cable is fixed by a support 33 to inside of rods and is electrically connected to the transmitter located at a remote part of the rods 21.
- the wellhead 29 is connected to the floating support of drilling by a so-called “marine riser" unit 35.
- a high pressure line 36 (kill line or choke line) runs substantially parallel to the riser of the head floating support well.
- Figure 4 shows in section a tube element 40 that can be used to casing a hole drilled in an area of too low resistivity.
- a tube body made of steel 41 is obtained by hot rolling. We factory at the two ends a male thread 42 and 43.
- a sleeve 44 having female threads 45 is screwed on one end.
- the insulating coating (as defined above) is deposited on the central zone 48. Zones 46 and 47 can be left raw so that the jaws of the robots have direct contact with the steel of the tube, likewise with regard to the corners of the table of suspension of the casing column.
- the present invention therefore has all the advantages electromagnetic wave transmission and more, allows an increase in performance than it either in wells equipped for production or in drilling course. It also allows you to use more broadly the EM transmission, especially in the case deep offshore.
- the tubes thus coated are also more effectively cathodically protected since the current to be injected for cathodic protection will be decreased and moreover it will only pass in places not coated which therefore require potential electrical protection against electro-corrosion.
- the coating can also promote cement adhesion on the tubes.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
- Earth Drilling (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
Description
- La figure 1 représente schématiquement une mise en oeuvre de l'invention pour un puits en production.
- La figure 2 illustre un autre mode de mise en oeuvre de l'invention dans le cas de l'opération de forage d'un puits.
- La figure 3 illustre une variante en forage.
- La figure 4 montre en coupe l'exemple d'un élément de tube de cuvelage revêtu extérieurement d'un isolant électrique.
- La figure 5 représente un exemple d'atténuation du signal en fonction de la profondeur du forage et de la résistivité des formations traversées.
- la courbe c représente le signal obtenu tout au long du puits dans le cas où on isole électriquement de manière parfaite l'extérieur du casing des formations environnantes sur l'intervalle 500 m à 1000 m. On constate que la réduction d'atténuation est de l'ordre de 35 dB selon les paramètres de propagation considérés (fréquence porteuse de 5Hz dans ce cas);
- la courbe d représente le signal obtenu tout au long du puits dans le cas où on isole uniquement le corps des casings. Ceci revient à considérer, pour le modèle de propagation que nous avons, une isolation parfaite du casing sur 27 m, puis une conduction électrique sur 0,5 mètre. On constate alors que le gain total en atténuation est de l'ordre de 24 dB.
Claims (14)
- Méthode de transmission d'informations depuis un puits foré à travers des couches de formation géologique et cuvelé au moins en partie par des tubes métalliques, ladite méthode comprend la mise en place dans ledit puits d'un émetteur/récepteur d'informations fonctionnant par le moyen d'ondes électromagnétiques guidées créées par l'injection d'un signal électrique par un dipôle relié conductivement aux tubes métalliques servant au guidage des ondes émises, caractérisée en ce que:on identifie l'atténuation de la transmission par certaines couches de formation ayant une faible résistivité,on isole électriquement au moins partiellement les tubes métalliques disposés au droit desdites couches de faible résistivité.
- Méthode selon la revendication 1, dans laquelle on détermine à l'aide d'un modèle mathématique la longueur minimale à isoler compte tenu des caractéristiques minimales de ladite transmission électromagnétique, notamment la distance de transmission et/ou le débit d'informations.
- Méthode selon l'une des revendications 1 ou 2, dans laquelle on effectue l'isolation par la mise en place de tubes préalablement revêtus d'une couche de matière isolante.
- Méthode selon l'une des revendications 1 ou 2, dans laquelle on effectue l'isolation par la mise en place d'un matériau isolant du type ciment au droit desdites certaines formations dans l'espace annulaire entre les tubes et les formations.
- Méthode selon l'une des revendications précédentes, dans laquelle on dispose ledit émetteur/récepteur proche de l'extrémité inférieure d'une colonne de tubes de production pour transmettre des mesures de fond ou des commandes à des équipements de fond.
- Méthode selon l'une des revendications 1 à 4, dans laquelle on dispose ledit émetteur/récepteur proche de l'extrémité inférieure d'une garniture de forage pour transmettre des paramètres de fond ou de forage, ou des mesures de localisation.
- Système de transmission d'informations depuis un puits foré dans des couches de formation géologique et cuvelé au moins en partie par des tubes métalliques, ledit système comprenant dans ledit puits un émetteur/récepteur d'informations fonctionnant par le moyen d'ondes électromagnétiques guidées créées par l'injection d'un signal électrique par un dipôle lié conductivement aux tubes métalliques servant au guidage des ondes émises, caractérisée en ce qu'au moins certains tubes métalliques disposés au droit desdites couches de faible résistivité comportent des moyens d'isolation électrique avec ladite formation.
- Système selon la revendication 7, dans lequel lesdits tubes isolés sont revêtus d'une couche de matière isolante.
- Système selon la revendication 8, dans lequel ladite couche isolante ne recouvre pas entièrement toute la longueur du tube.
- Système selon la revendication 7, dans lequel lesdits moyens d'isolation comprennent un matériau isolant qui remplit l'espace annulaire entre lesdits tubes et la formation conductrice, ledit matériau étant le résultat du durcissement d'une composition liquide.
- Système selon l'une des revendications 7 à 10, dans lequel ledit émetteur/récepteur est incorporé à l'extrémité d'une colonne de tubes de production.
- Système selon l'une des revendications 7 à 10, dans lequel ledit émetteur/récepteur est incorporé à l'extrémité d'une garniture de forage.
- Application du système selon l'une des revendications 7 à 12, à une installation de forage en mer avec tête de puits sous-marine.
- Application selon la revendication 13, dans laquelle une conduite de contrôle de venues (kill-line) est extérieurement isolée électriquement du fond de la mer à la surface.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9813304 | 1998-10-23 | ||
FR9813304A FR2785017B1 (fr) | 1998-10-23 | 1998-10-23 | Methode et systeme de transmission d'informations par onde electromagnetique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0995877A1 true EP0995877A1 (fr) | 2000-04-26 |
EP0995877B1 EP0995877B1 (fr) | 2003-05-07 |
Family
ID=9531909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99402571A Expired - Lifetime EP0995877B1 (fr) | 1998-10-23 | 1999-10-19 | Méthode et système de transmission d'informations par onde électromagnétique |
Country Status (10)
Country | Link |
---|---|
US (1) | US6628206B1 (fr) |
EP (1) | EP0995877B1 (fr) |
CN (1) | CN1154251C (fr) |
BR (1) | BR9905102B1 (fr) |
CA (1) | CA2286435C (fr) |
DE (1) | DE69907597T2 (fr) |
ES (1) | ES2198865T3 (fr) |
FR (1) | FR2785017B1 (fr) |
NO (1) | NO315247B1 (fr) |
RU (1) | RU2206739C2 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7071837B2 (en) | 1999-07-07 | 2006-07-04 | Expro North Sea Limited | Data transmission in pipeline systems |
CN104937442A (zh) * | 2012-12-28 | 2015-09-23 | 哈里伯顿能源服务公司 | 利用电绝缘材料的井下电磁遥测系统和相关方法 |
US20190032473A1 (en) * | 2012-12-07 | 2019-01-31 | Halliburton Energy Services, Inc. | System for Drilling Parallel Wells for SAGD Applications |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
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BR0202248B1 (pt) * | 2001-04-23 | 2014-12-09 | Schlumberger Surenco Sa | Sistema de comunicação submarina e método utilizável com um poço submarino |
FR2854425B1 (fr) * | 2003-04-30 | 2005-07-29 | Gaz De France | Procede et dispositif de transmission d'informations entre une cavite saline et la surface du sol |
US7145473B2 (en) * | 2003-08-27 | 2006-12-05 | Precision Drilling Technology Services Group Inc. | Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
US7170423B2 (en) * | 2003-08-27 | 2007-01-30 | Weatherford Canada Partnership | Electromagnetic MWD telemetry system incorporating a current sensing transformer |
US7080699B2 (en) * | 2004-01-29 | 2006-07-25 | Schlumberger Technology Corporation | Wellbore communication system |
US7249636B2 (en) | 2004-12-09 | 2007-07-31 | Schlumberger Technology Corporation | System and method for communicating along a wellbore |
GB2462757B (en) * | 2005-01-31 | 2010-07-14 | Baker Hughes Inc | Telemetry system with an insulating connector |
US7609169B2 (en) * | 2006-08-31 | 2009-10-27 | Precision Energy Services, Inc. | Electromagnetic telemetry apparatus and methods for minimizing cyclical or synchronous noise |
ATE513231T1 (de) | 2007-01-26 | 2011-07-15 | Prad Res & Dev Nv | Bohrlochtelemetriesystem |
CN101072050B (zh) * | 2007-06-19 | 2010-08-25 | 北京意科通信技术有限责任公司 | 一种通过金属管道进行数据传输的系统 |
WO2009012328A1 (fr) * | 2007-07-16 | 2009-01-22 | Earth To Air Systems, Llc | Améliorations dans la conception d'un système d'échange direct |
TW200930963A (en) * | 2008-01-02 | 2009-07-16 | Rui-Zhao Chen | Combination refrigerator |
CN101824983A (zh) * | 2010-05-06 | 2010-09-08 | 煤炭科学研究总院西安研究院 | 一种信号传输装置 |
CA2800170C (fr) * | 2010-05-21 | 2017-02-21 | Halliburton Energy Services, Inc. | Systemes et procedes d'isolation de bha en fond de trou dans applications de telemetrie magnetique |
IT1403940B1 (it) * | 2011-02-16 | 2013-11-08 | Eni Spa | Sistema di rilevamento di formazioni geologiche |
US9303507B2 (en) | 2013-01-31 | 2016-04-05 | Saudi Arabian Oil Company | Down hole wireless data and power transmission system |
CN106285660B (zh) * | 2016-08-23 | 2020-03-10 | 中国石油天然气股份有限公司 | 一种多层砂岩油藏低阻油层识别方法及装置 |
RU2745858C1 (ru) * | 2020-06-03 | 2021-04-02 | Общество с ограниченной ответственностью "Научно-технологический центр Геомеханика" | Способ мониторинга скважинных забойных параметров и устройство для его осуществления |
CN113236236A (zh) * | 2021-06-21 | 2021-08-10 | 哈尔滨工程大学 | 一种以油井管道作为信道的信号传输装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4684946A (en) * | 1983-05-06 | 1987-08-04 | Geoservices | Device for transmitting to the surface the signal from a transmitter located at a great depth |
US4793409A (en) * | 1987-06-18 | 1988-12-27 | Ors Development Corporation | Method and apparatus for forming an insulated oil well casing |
US5394141A (en) * | 1991-09-12 | 1995-02-28 | Geoservices | Method and apparatus for transmitting information between equipment at the bottom of a drilling or production operation and the surface |
EP0816632A1 (fr) * | 1996-07-01 | 1998-01-07 | Geoservices | Dispositif et méthode de transmission d'informations par onde électromagnétique |
WO1998006924A2 (fr) * | 1996-07-31 | 1998-02-19 | Scientific Drilling International | Procede et appareil de telemetrie a champ electrique et d'evaluation de formation combinees |
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US3967201A (en) * | 1974-01-25 | 1976-06-29 | Develco, Inc. | Wireless subterranean signaling method |
US4001774A (en) * | 1975-01-08 | 1977-01-04 | Exxon Production Research Company | Method of transmitting signals from a drill bit to the surface |
EP0737322A4 (fr) * | 1993-06-04 | 1997-03-19 | Gas Res Inst Inc | Procede et appareil de communication de signaux en provenance d'un trou de forage tube |
-
1998
- 1998-10-23 FR FR9813304A patent/FR2785017B1/fr not_active Expired - Lifetime
-
1999
- 1999-09-28 US US09/407,059 patent/US6628206B1/en not_active Expired - Lifetime
- 1999-10-14 NO NO19995019A patent/NO315247B1/no not_active IP Right Cessation
- 1999-10-19 CA CA002286435A patent/CA2286435C/fr not_active Expired - Lifetime
- 1999-10-19 EP EP99402571A patent/EP0995877B1/fr not_active Expired - Lifetime
- 1999-10-19 DE DE69907597T patent/DE69907597T2/de not_active Expired - Lifetime
- 1999-10-19 ES ES99402571T patent/ES2198865T3/es not_active Expired - Lifetime
- 1999-10-21 BR BRPI9905102-8A patent/BR9905102B1/pt not_active IP Right Cessation
- 1999-10-22 RU RU99122214/03A patent/RU2206739C2/ru active
- 1999-10-25 CN CNB991231546A patent/CN1154251C/zh not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4684946A (en) * | 1983-05-06 | 1987-08-04 | Geoservices | Device for transmitting to the surface the signal from a transmitter located at a great depth |
US4793409A (en) * | 1987-06-18 | 1988-12-27 | Ors Development Corporation | Method and apparatus for forming an insulated oil well casing |
US5394141A (en) * | 1991-09-12 | 1995-02-28 | Geoservices | Method and apparatus for transmitting information between equipment at the bottom of a drilling or production operation and the surface |
EP0816632A1 (fr) * | 1996-07-01 | 1998-01-07 | Geoservices | Dispositif et méthode de transmission d'informations par onde électromagnétique |
WO1998006924A2 (fr) * | 1996-07-31 | 1998-02-19 | Scientific Drilling International | Procede et appareil de telemetrie a champ electrique et d'evaluation de formation combinees |
Cited By (5)
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US7071837B2 (en) | 1999-07-07 | 2006-07-04 | Expro North Sea Limited | Data transmission in pipeline systems |
US20190032473A1 (en) * | 2012-12-07 | 2019-01-31 | Halliburton Energy Services, Inc. | System for Drilling Parallel Wells for SAGD Applications |
US10995608B2 (en) * | 2012-12-07 | 2021-05-04 | Halliburton Energy Services, Inc. | System for drilling parallel wells for SAGD applications |
CN104937442A (zh) * | 2012-12-28 | 2015-09-23 | 哈里伯顿能源服务公司 | 利用电绝缘材料的井下电磁遥测系统和相关方法 |
EP2914986A4 (fr) * | 2012-12-28 | 2016-09-21 | Halliburton Energy Services Inc | Système de télémétrie électromagnétique en fond de trou employant un matériau électriquement isolant et procédés apparentés |
Also Published As
Publication number | Publication date |
---|---|
NO995019D0 (no) | 1999-10-14 |
CN1154251C (zh) | 2004-06-16 |
DE69907597T2 (de) | 2004-03-18 |
CN1251480A (zh) | 2000-04-26 |
ES2198865T3 (es) | 2004-02-01 |
FR2785017A1 (fr) | 2000-04-28 |
EP0995877B1 (fr) | 2003-05-07 |
BR9905102B1 (pt) | 2010-08-24 |
BR9905102A (pt) | 2000-10-03 |
CA2286435A1 (fr) | 2000-04-23 |
NO995019L (no) | 2000-04-25 |
US6628206B1 (en) | 2003-09-30 |
NO315247B1 (no) | 2003-08-04 |
FR2785017B1 (fr) | 2000-12-22 |
DE69907597D1 (de) | 2003-06-12 |
CA2286435C (fr) | 2006-03-14 |
RU2206739C2 (ru) | 2003-06-20 |
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