EP0413097B1 - Dispositif pour pressuriser dans une émulsion pour forage - Google Patents
Dispositif pour pressuriser dans une émulsion pour forage Download PDFInfo
- Publication number
- EP0413097B1 EP0413097B1 EP90110691A EP90110691A EP0413097B1 EP 0413097 B1 EP0413097 B1 EP 0413097B1 EP 90110691 A EP90110691 A EP 90110691A EP 90110691 A EP90110691 A EP 90110691A EP 0413097 B1 EP0413097 B1 EP 0413097B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- main valve
- valve body
- tubular
- housing
- carrier body
- 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 - Lifetime
Links
- 238000005553 drilling Methods 0.000 title claims description 20
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003068 static effect Effects 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
- E21B47/14—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 using acoustic waves
- E21B47/18—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 using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
- E21B47/24—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 using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry by positive mud pulses using a flow restricting valve within the drill pipe
Definitions
- the invention relates to a device for generating pressure pulses in a drilling fluid flowing through a drill pipe string in an embodiment according to the preamble of claim 1.
- the main valve body is supported and guided axially displaceably on the carrier body in the region of its rearward end in the direction of flow.
- the main valve body has a tubular extension on its end facing the flow, which has a diameter below the diameter of the constriction, extends through the constriction against the direction of flow and has side slots in the region of its end, which form the inlet opening for the internal flow channel.
- the invention has for its object to provide a particularly simple, low-wear and reliable device of the type mentioned, and the invention solves this problem by a device with the features of claim 1. With regard to essential further embodiments reference is made to claims 2 to 8.
- the assignment of the tube extension to the support body makes the pressure withdrawal before the constriction of the housing independent of the position and movements of the main valve body and thus free of the resulting fluctuations.
- the design of the main valve body is simplified, which is therefore less subject to wear and offers increased sensitivity.
- the double guidance of the main valve body counteracts tilting movements and the resulting clamping phenomena, so that the device can also be used reliably in drilling fluid containing sand and in drill pipe strands for directional, in particular horizontal, drilling.
- With a simplified possibility for cable routing and for establishing a mechanical and / or electrical connection to the device above the housing there is also the particularly interesting possibility of designing the main part of the device as a pull-up unit.
- the device illustrated in the drawing for generating pressure pulses in a drilling fluid flowing through a drill pipe string 1 comprises in particular a tubular casing 2 which is supported in a stationary manner in the drill pipe string 1 with a constriction, which in the illustrated example has a separate end on the front end in the direction of flow 4 Housing 2 attached ring body 3 is formed.
- a support body 5 is supported in a stationary manner, which is essentially tubular and has a foot part 6 and a tube extension 7, which has a diameter which is below the diameter of the constriction 3 of the housing 2 and through the constriction 3 through the flow direction 4 to in the high pressure area of the flowing drilling fluid is preferred.
- a substantially tubular main valve body 8 is supported on the carrier body 5, which, like the carrier body 5, is arranged coaxially in the housing 2 and axially from its illustrated starting position, defined by a shoulder 9 of the carrier body 5, against the flow direction 4 of the drilling fluid into an upper operating end position is movable.
- the main valve body 8 defines between itself and the housing 2 an external flow channel 10 for the drilling fluid and between a tapering front end 11 and the constriction 3 a throttle section with a variable flow cross-section depending on the position of the main valve body 8.
- the carrier body 5 has in the area of its foot part 6 a sliding guide area 13, on which the rear area of the main valve body 8 is slidably supported.
- This sliding guide area 13 is preferably provided with a hard covering, e.g. a separate sleeve made of tungsten carbide, which, as armouring, reduces wear in the sliding guide area. This is particularly important for drilling fluid that contains abrasive particles such as sand.
- the front end 11 of the main valve body 8, which tapers against the direction of flow 4, is also supported and guided on the tubular extension 7 in the region of a second sliding guide 14, which can also be formed by a hard metal sleeve or another armored hard metal coating.
- the assignment of the tubular extension 7 to the carrier body 5 enables a substantial simplification of the shape of the main valve body 8.
- the main valve body 8 can present a lower moment of inertia and accordingly react more sensitively to pressure differences which act on it.
- the simplification in shape reduces the wear to which the main valve body 8 is exposed during operation, in particular in drilling fluid with abrasive particles such as sand.
- the carrier body 5 delimits a coaxial, continuous internal flow channel 15, the inlet opening of which is arranged centrally and in the flow direction 4 in front of the constriction 3 of the housing 2 and is formed by a number of radially oriented bores 16. These bores 16 are made in an attachment part 17 arranged on the end of the tubular extension 7, the upper end of which is designed as a coupling pin 18 for a drawing tool.
- the attachment part 17 has a rear end face 19, which forms a securing stop for the main valve body 8 and prevents the main valve body 8 from sliding off the carrier body 5 against the direction of flow 4, which is possible with the drill pipe string 1 aligned horizontally under certain pressure conditions and then not when the clear inner diameter of the ring body 3 exceeds the outer diameter of the main valve body 8.
- the bores 16 defining the inlet opening for the inner flow channel 15 are preceded by a common sieve 20, the outer surface of which is coaxially aligned and aligned with the outer surface of the attachment part 17.
- the outer surface of the screen 20 is therefore flowed over in parallel over the entire axial length of the drilling fluid, so that the screen is exposed to constant self-cleaning. This is particularly important when the drilling fluid is offset with sealing additives.
- An annular space 21 is provided behind the sieve 20, from which the bores 16 open, so that all of them Bores 16 remain operational even if the screen 20 should be temporarily partially blocked.
- the inner flow channel 15 has an extension 22 in the region of the foot part 6 of the carrier body 5, and the extension 22 is connected via connecting channels 23 to a pressure chamber 24 which is provided between the tubular extension 7 of the carrier body 5 and the main valve body 8. Accordingly, a pressure prevails in the pressure chamber 24 which corresponds to the pressure in the drilling fluid in the internal flow channel 15 at the level of the branch of the connecting channels 23.
- the inner flow channel has an outlet opening in the form of a valve opening 25 in a valve seat part 26 screwed into the extension 22 of the inner flow channel 15.
- This valve opening 25 can be closed by means of a valve body 27, which can be moved from its open position to a closed position by means of a drive (not shown), for example formed by an electromagnet.
- the parts 26, 27 form an auxiliary valve, through which the flow through the inner flow channel 15 with drilling fluid can be released or blocked.
- the auxiliary valve 26, 27 is controlled by a device (not illustrated in more detail) for determining measurement data from the borehole, which is arranged downstream of the carrier body 5, and the pressure pulses initiated by the auxiliary valve 26, 27 in the drilling fluid are received above ground by a pressure sensor and one Evaluation device supplied.
- a device not illustrated in more detail
- the auxiliary valve 26, 27 is closed due to activation by the measuring device.
- the internal flow channel 15 and thus in the pressure chamber 24 builds accordingly a pressure which corresponds to the pressure of the drilling fluid at the level of the inlet opening of the internal flow channel 15.
- This pressure prevailing in the pressure chamber 24 exerts hydraulic forces directed against the flow direction 4 on the main valve body 8, the sum of which exceeds the sum of the forces acting in the flow direction on the main valve body 8 located in the starting position.
- the hydraulic forces acting axially in the flow direction 4 on the main valve body 8 are composed of static and dynamic forces which are derived from the pressure and flow conditions in the external flow channel 10, 12.
- the hydraulically effective dimensions are coordinated with one another in such a way that the total results against all flow forces acting on the main valve body 8 against the direction of flow 4 at the time when the main valve body 8 follows the closing of the auxiliary valve 26, 27 begins to move upward from its starting position, is initially relatively small, then increases with increasing stroke length and finally decreases again until it reaches the value zero.
- the main valve body 8 assumes its operating pulse position which determines the pressure pulse, in which the main valve body 8 floats in the drilling fluid without a stop.
- the pressure in the pressure chamber increases 24 again a value at which the sum of the forces acting in the flow direction 4 on the main valve body 8 exceeds the sum of the forces acting against the flow direction 4, with the result that the main valve body 8 returns to its illustrated starting position and is ready for a new pressure pulse generating work cycle .
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Sliding Valves (AREA)
- Details Of Valves (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Claims (8)
- Dispositif destiné à produire des impulsions de pression dans une boue de forage traversant un train de forage (1) en vue de la télétransmission de données de mesure, comportant une soupape installée dans le train de forage (1), qui comprend un boîtier tubulaire (2) monté fixe, un obturateur de soupape principale tubulaire (8) monté coaxialement dans ce boîtier en formant un canal d'écoulement extérieur (10) et mobile axialement à partir d'une position de départ définie par une butée (9) dans le sens contraire au sens d'écoulement (4) de la boue de forage vers une position extrême de fonctionnement, un élément de support tubulaire (5), monté fixe, coaxialement dans l'obturateur de soupape principale (8), et une soupape auxiliaire (26, 27), étant entendu qu'entre un étranglement (3) du boîtier (2) et l'obturateur de soupape principale (8) est prévu un passage calibré (12) dans le canal d'écoulement extérieur (10) présentant une section d'écoulement variant en fonction de la position de l'obturateur de soupape principale (8) et que l'élément de support (5) et l'obturateur de soupape principale (8) définissent un canal d'écoulement intérieur (15) dont l'orifice d'entrée est central et est disposé, dans le sens d'écoulement (4), devant l'étranglement (3) du boîtier (2) à l'extrémité d'un prolongement tubulaire (7), dont le diamètre est inférieur au diamètre de l'étranglement (3) du boîtier (2) et dont l'orifice de sortie est situé dans la zone de la base (6) de l'élément de support (5) et peut être ouvert et fermé au moyen de la soupape auxiliaire (26, 27), caractérisé en ce que l'élément de support (5) est pourvu du prolongement tubulaire (7) et le prolongement tubulaire (7) forme un second guide à glissement (14) pour l'extrémité antérieure (11) de l'obturateur de valve principale (8) qui enserre ce prolongement, étant entendu qu'entre le prolongement tubulaire (7) de l'élément de support (5) et l'obturateur de soupape principale (8) est formée une chambre de pression (24) qui est raccordée par des canaux de liaison au canal d'écoulement intérieur (15).
- Dispositif suivant la revendication 1, caractérisé en ce que le prolongement tubulaire (7) présente, dans la zone du guide à glissement (14) pour l'extrémité antérieure (11) de l'obturateur de soupape principale (8), un garnissage formé par un revêtement dur.
- Dispositif suivant la revendication 1 ou 2, caractérisé en ce que l'orifice d'entrée du canal d'écoulement intérieur (15) est formé d'une série de lumières orientées radialement (16) qui sont ménagées dans une pièce rapportée (17) montée sur l'extrémité du prolongement tubulaire (7).
- Dispositif suivant la revendication 3, caractérisé en ce qu'un tamis commun (20) est disposé devant les lumières (16), la surface extérieure de ce tamis étant orientée coaxialement à la surface extérieure de la pièce rapportée (17) et étant essentiellement dans l'alignement de celle-ci.
- Dispositif suivant la revendication 4, caractérisé en ce que les lumières (16) s'ouvrent dans une chambre annulaire (21) disposée derrière le tamis (20).
- Dispositif suivant l'une quelconque des revendications 1 à 5, caractérisé en ce qu'entre l'extrémité du prolongement tubulaire (7) et la zone du guide à glissement (14) est prévue une butée de sécurité (19) pour l'obturateur de valve principale (8).
- Dispositif suivant la revendication 6, caractérisé en ce que la butée de sécurité (19) est formée par la pièce rapportée (17).
- Dispositif suivant l'une quelconque des revendications 1 à 7, caractérisé en ce que l'extrémité du support tubulaire (5) ou de la pièce rapportée (17) est pourvue d'un embout d'accouplement (18) pour un outil de traction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3926908 | 1989-08-16 | ||
DE3926908A DE3926908C1 (fr) | 1989-08-16 | 1989-08-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0413097A1 EP0413097A1 (fr) | 1991-02-20 |
EP0413097B1 true EP0413097B1 (fr) | 1993-04-21 |
Family
ID=6387148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90110691A Expired - Lifetime EP0413097B1 (fr) | 1989-08-16 | 1990-06-06 | Dispositif pour pressuriser dans une émulsion pour forage |
Country Status (5)
Country | Link |
---|---|
US (1) | US5040155A (fr) |
EP (1) | EP0413097B1 (fr) |
CA (1) | CA2023351C (fr) |
DE (1) | DE3926908C1 (fr) |
NO (1) | NO175014C (fr) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5836353A (en) * | 1996-09-11 | 1998-11-17 | Scientific Drilling International, Inc. | Valve assembly for borehole telemetry in drilling fluid |
GB2360800B (en) | 2000-03-29 | 2003-11-12 | Geolink | Improved signalling system for drilling |
EP1354127B1 (fr) * | 2001-01-24 | 2005-12-14 | Geolink(UK) Limited | Systeme de signalisation de forage |
CA2435788C (fr) | 2001-01-24 | 2010-03-23 | Geolink (Uk) Ltd. | Systeme de signalisation pour forage |
US7428922B2 (en) * | 2002-03-01 | 2008-09-30 | Halliburton Energy Services | Valve and position control using magnetorheological fluids |
US7082078B2 (en) * | 2003-08-05 | 2006-07-25 | Halliburton Energy Services, Inc. | Magnetorheological fluid controlled mud pulser |
US7180826B2 (en) * | 2004-10-01 | 2007-02-20 | Teledrill Inc. | Measurement while drilling bi-directional pulser operating in a near laminar annular flow channel |
US8138943B2 (en) * | 2007-01-25 | 2012-03-20 | David John Kusko | Measurement while drilling pulser with turbine power generation unit |
US7836948B2 (en) | 2007-05-03 | 2010-11-23 | Teledrill Inc. | Flow hydraulic amplification for a pulsing, fracturing, and drilling (PFD) device |
US7958952B2 (en) * | 2007-05-03 | 2011-06-14 | Teledrill Inc. | Pulse rate of penetration enhancement device and method |
US8174929B2 (en) * | 2007-07-02 | 2012-05-08 | Schlumberger Technology Corporation | Spindle for mud pulse telemetry applications |
GB0807878D0 (en) * | 2008-04-30 | 2008-06-04 | Wavefront Reservoir Technologi | System for pulse-injecting fluid into a borehole |
EP2245263B1 (fr) * | 2008-01-17 | 2017-11-15 | Wavefront Reservoir Technologies Ltd. | Système pour injection pulsée de fluide dans un trou de forage |
MX2011006666A (es) * | 2008-12-17 | 2011-09-06 | Gabor Vecseri | Sistema de sellado de alta presion de respuesta rapida para dispositivos moduladores de flujo. |
US8720572B2 (en) * | 2008-12-17 | 2014-05-13 | Teledrill, Inc. | High pressure fast response sealing system for flow modulating devices |
EP2694848B1 (fr) | 2011-04-06 | 2020-03-11 | David John Kusko | Soupape de régulation hydroélectrique pour emplacements distants |
US9309762B2 (en) | 2011-08-31 | 2016-04-12 | Teledrill, Inc. | Controlled full flow pressure pulser for measurement while drilling (MWD) device |
US9133664B2 (en) | 2011-08-31 | 2015-09-15 | Teledrill, Inc. | Controlled pressure pulser for coiled tubing applications |
EP2815063B1 (fr) | 2011-12-23 | 2019-01-09 | Teledrill Inc. | Générateur d'impulsions de pression d'écoulement complet régulé pour dispositif de mesure en forage (« measure while drilling » ou mwd) |
US10633968B2 (en) | 2011-12-23 | 2020-04-28 | Teledrill, Inc. | Controlled pressure pulser for coiled tubing measurement while drilling applications |
US9702204B2 (en) | 2014-04-17 | 2017-07-11 | Teledrill, Inc. | Controlled pressure pulser for coiled tubing measurement while drilling applications |
US8534381B1 (en) * | 2012-01-06 | 2013-09-17 | Aim Directional Services, LLC | High LCM positive pulse MWD component |
US9644440B2 (en) | 2013-10-21 | 2017-05-09 | Laguna Oil Tools, Llc | Systems and methods for producing forced axial vibration of a drillstring |
CA2935828C (fr) | 2015-07-16 | 2018-06-05 | Drilformance Technologies, Llc | Appareil hydraulique destine a produire des impulsions de pression dans un fluide de forage |
WO2021007483A1 (fr) | 2019-07-10 | 2021-01-14 | Bench Tree Group, Llc | Vanne d'impulsion de boue |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3958217A (en) * | 1974-05-10 | 1976-05-18 | Teleco Inc. | Pilot operated mud-pulse valve |
US4371958A (en) * | 1978-03-27 | 1983-02-01 | Claycomb Jack R | Drilling orientation tool |
DE2941102A1 (de) * | 1979-10-08 | 1981-04-16 | Dresser Industries, Inc., 75221 Dallas, Tex. | In einem bohrstrang zu verwendendes arbeitsgeraet zur erfassung und uebertragung von bohrloch-messdaten |
DE3028813C2 (de) * | 1980-07-30 | 1983-09-08 | Christensen, Inc., 84115 Salt Lake City, Utah | Verfahren und Vorrichtung zur Fernübertragung von Informationen |
NO154674C (no) * | 1980-11-20 | 1987-01-07 | Sperry Sun Inc | Innretning for signalering i et borehull under boring. |
US4742498A (en) * | 1986-10-08 | 1988-05-03 | Eastman Christensen Company | Pilot operated mud pulse valve and method of operating the same |
DE3715514C1 (fr) * | 1987-05-09 | 1988-09-08 | Eastman Christensen Co., Salt Lake City, Utah, Us | |
DE3715512C1 (fr) * | 1987-05-09 | 1988-10-27 | Eastman Christensen Co., Salt Lake City, Utah, Us |
-
1989
- 1989-08-16 DE DE3926908A patent/DE3926908C1/de not_active Expired - Lifetime
-
1990
- 1990-06-06 EP EP90110691A patent/EP0413097B1/fr not_active Expired - Lifetime
- 1990-08-09 US US07/564,884 patent/US5040155A/en not_active Expired - Lifetime
- 1990-08-15 NO NO903578A patent/NO175014C/no unknown
- 1990-08-15 CA CA002023351A patent/CA2023351C/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5040155A (en) | 1991-08-13 |
CA2023351A1 (fr) | 1991-02-17 |
NO903578D0 (no) | 1990-08-15 |
NO175014C (no) | 1994-08-17 |
DE3926908C1 (fr) | 1990-10-11 |
EP0413097A1 (fr) | 1991-02-20 |
NO903578L (no) | 1991-02-18 |
NO175014B (no) | 1994-05-09 |
CA2023351C (fr) | 1996-02-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0413097B1 (fr) | Dispositif pour pressuriser dans une émulsion pour forage | |
DE3715514C1 (fr) | ||
DE3305273A1 (de) | Sicherheitsventil fuer bohrloecher | |
DE2520753A1 (de) | Fernmeldegeraet | |
DE3233982C1 (de) | In einem Bohrstrang angeordnetes hilfsgesteuertes Ventil | |
DE10106080C2 (de) | Bohrlochmeßgerät für Tiefbohrungen mit einer Einrichtung zum Übertragen von Bohrlochmeßdaten | |
DE2757352A1 (de) | Selbsttaetig arbeitendes rueckschlagventil | |
DE69021706T2 (de) | Hydraulische schaltung zum betrieb einer maschine. | |
DE102007050048A1 (de) | Turbine zur Energieerzeugung in einem Bohrstrang | |
DE2506928B2 (de) | Gebirgsschlagventil für hydraulische Grubenstempel | |
DE69713619T2 (de) | Flüssigkeitsmengenregelventil | |
DE2407177C3 (de) | Auslöseventil | |
EP0290938A2 (fr) | Dispositif pour la création d'impulsions de pression dans un fluide de forage | |
DE2834895C2 (de) | Hydraulische Formschließvorrichtung mit einem Druckübersetzer | |
DE2843592B2 (de) | Hilfskraftlenkgetriebe | |
DE3030496A1 (de) | Hydropneumatischer akkumulator fuer impulsberieselung | |
DE69026788T2 (de) | Automatisches Absperrventil mit Druckregelvorrichtung | |
DE3902764C2 (de) | Kraftstoffeinspritzpumpe | |
EP1346151B1 (fr) | Dispositif de mesure de la quantite d'injection de systemes d'injection et procede de fabrication dudit dispositif | |
DE1425730A1 (de) | Ablaufventil | |
DE4221697C2 (de) | Durchflußmengenregelventileinheit | |
DE3147613A1 (de) | Zentrifuge mit selbsstaetiger feststoffentleerung | |
DE3610629C2 (fr) | ||
DE2845301B2 (de) | Lenkventil für Hilfskraftlenkungen | |
DE3100916A1 (de) | "druckluftregulierventil fuer ein kraftfahrzeug-bremssystem" |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE FR GB NL |
|
17P | Request for examination filed |
Effective date: 19910608 |
|
17Q | First examination report despatched |
Effective date: 19921008 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: EASTMAN TELECO COMPANY |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE FR GB NL |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19930504 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19940519 Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19950630 |
|
BERE | Be: lapsed |
Owner name: EASTMAN TELECO CY Effective date: 19950630 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19990519 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19990526 Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010101 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010228 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20010101 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20090625 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20100605 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20100605 |