EP0202151B1 - Vorrichtung für Bohrgestänge oder dergleichen, bestehend aus einem Rohrstück mit einer seitlichen Öffnung für ein Kabel - Google Patents

Vorrichtung für Bohrgestänge oder dergleichen, bestehend aus einem Rohrstück mit einer seitlichen Öffnung für ein Kabel Download PDF

Info

Publication number
EP0202151B1
EP0202151B1 EP86400916A EP86400916A EP0202151B1 EP 0202151 B1 EP0202151 B1 EP 0202151B1 EP 86400916 A EP86400916 A EP 86400916A EP 86400916 A EP86400916 A EP 86400916A EP 0202151 B1 EP0202151 B1 EP 0202151B1
Authority
EP
European Patent Office
Prior art keywords
cable
sleeve
jacket
window
drill string
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
Application number
EP86400916A
Other languages
English (en)
French (fr)
Other versions
EP0202151A1 (de
Inventor
Christian Wittrisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of EP0202151A1 publication Critical patent/EP0202151A1/de
Application granted granted Critical
Publication of EP0202151B1 publication Critical patent/EP0202151B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/04Cutting of wire lines or the like
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • E21B17/023Arrangements for connecting cables or wirelines to downhole devices
    • E21B17/025Side entry subs
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00Valve arrangements for boreholes or wells
    • E21B34/06Valve arrangements for boreholes or wells in wells
    • E21B34/063Valve or closure with destructible element, e.g. frangible disc
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00Valve arrangements for boreholes or wells
    • E21B34/06Valve arrangements for boreholes or wells in wells
    • E21B34/14Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
    • E21B34/142Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools unsupported or free-falling elements, e.g. balls, plugs, darts or pistons

Definitions

  • the present invention relates to equipment for a drill string such as a drill string comprising a side window connection for the passage of a cable from the inside to the outside of the rods, with hydraulic sealing around the cable.
  • a side window fitting is, for example, used in the technique described in French patent 2 501777 (EN 81/05 271) and its first two additions EN 82/03 317 and EN 84/08 369.
  • a logging probe or an intervention tool is initially fixed to the lower part of a drill string which is lowered into the well at as it was created.
  • An electrical cable fitted with a weighted connector (the connector is surmounted by a load bar) is then lowered inside the rods (by gravity and by pumping) which is connected to a complementary connector fixed to the top of the probe (or the tool).
  • a side window fitting passes the cable from the interior to the exterior of the rods.
  • the measurement recording (or intervention in the well) is carried out by moving the entire drill string from the surface.
  • loosening operations or interventions are, for example, the introduction into the rod, from the surface, of specialized tools to be lowered by means of a cable to the area (which is generally located under the inlet fitting lateral) which includes the stems trapped by the formation.
  • These specialized tools can, for example, be an explosive which allows the unscrewing of the stuck rod.
  • This problem is solved according to the invention with equipment for a drill string comprising a lateral window fitting adapted to be incorporated into the drill string, this window allowing the passage of a cable, characterized in that it comprises a sleeve which can slide inside said connection between a high position situated above said window and a low position in which this sleeve closes said window, said sleeve being provided with retaining members in each of said positions and comprising means for cutting the cable when the said jacket passes from its high position to its low position.
  • the equipment according to the invention comprises a plug for closing said shirt at its upper end, this plug allowing said shirt to be moved from its high position to its low position under the effect of hydraulic pressure exerted from the surface in the drill pipe and comprising at its top a removal and recovery device.
  • US-A-4512411 teaches to cut a cable passing right through a cylinder. According to this prior patent, the cable is cut by shearing it by a radial movement of jaws.
  • US-A-4,160,478 mainly provides for the perforation of a tube being in a casing and traversing the latter right through.
  • the cutting member has a rotational movement about an axis. During this movement, it enters the tube causing a partial tear thereof.
  • the reference 1 designates the connection with side window screwed between two elements 1a and 1b of the drill string.
  • This connector has a side window 2 allowing the passage of an electrical cable 3 from the outside to the inside of the rods along a ramp 4.
  • This cable is, for example, of a type used for logs or interventions carried out according to the technique described in French patent 2,501,777 and its aforementioned additions.
  • a member 5 seals around the cable 3 where it passes from the inside of the connector 1, this member being immobilized by a wedging finger 5a. Outside the connector 1, the cable 3 passes successively over a guide roller 6 and through an anchoring member 7 where it is mechanically blocked by a system of any suitable type, comprising for example a shearable pin, allowing the release of the cable 3 under the action of a sufficient tensile force exerted on this cable from the surface.
  • organs 5 and 7 are within the reach of specialists and will not be described here in more detail.
  • a jacket 8 is slidably mounted in the axial bore 9 of the connector 1, a seal being formed between this jacket 8 and the bore 9, for example by an O-ring 10.
  • Figure 1 shows the sliding jacket 8 in its upper position revealing the window 2, so as to allow the passage of the cable 3.
  • a shear pin 11 retains the jacket 8 in this position.
  • FIG. 2 illustrates the second position of the jacket 8 where this jacket closes the side window 2.
  • the wall of the sliding sleeve 8 is tapered at its lower part so as to constitute a cutting member with a bevel section 12, suitable for cutting the cable 3 in its low position, this member then coming into contact with a ring 13 constituting a sleeve retaining ring shoulder 8.
  • the reference 14 designates an annular sealing member placed above the ring 13.
  • a safety pin 15, retractable against the action of a spring 16, is applied against the outer wall of the jacket 8 in the high position of FIG. 1, while in the position of FIG. 2 this pin comes s 'engage in a suitable housing 17 formed in the head of the sliding sleeve 8.
  • a plug 18 can be adapted to the upper part of the sliding jacket 8 to close it, this plug being provided with a removal and recovery head 19 allowing the plug 18 to be gripped by an appropriate tool which may be of a known type .
  • This removal and recovery tool for the sealing plug 18 will be placed at the lower end of a cable or an operating rod (not shown).
  • the plug 18 makes it possible to move the jacket 8 from its high position (Fig. 1) to its low position (Fig. 2) under the effect of hydraulic pressure exerted from the surface in the drill pipe.
  • the implementation of this equipment is indicated below.
  • the jacket 8 is held in the low position by the engagement of the pin 15 in the housing 17.
  • the seals 10 and 14 located respectively at the upper part and at the lower part of the jacket 8 then ensure a good seal between the inside and the outside of the drill string.
  • This loosening can also be carried out by introducing from the surface from the inside of the rods, tools of types well known to drillers, allowing the rods to be unscrewed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Processing Of Terminals (AREA)

Claims (2)

1. Ausrüstungteil für Bohrgestänge mit einem Kupplungsstück (1) mit seitlichem Fenster (2), zum Einbau in das Bohrgestänge bzw. den Bohrstrang, wobei das Fenster den Durchgang eines Kabels (3) ermöglicht, dadurch gekennzeichnet, daß es ein Futterrohr (8) umfaßt, welches im Inneren dieses Kupplungsstücks zwischen einer oberen Stellung (Fig. 1), die oberhalb dieses Fensters sich befindet und einer unteren Stellung (Fig. 2) gleiten kann, in der dieses Futterrohr (8) dieses Fenster verschließt, wobei das Futterrohr mit Organen (11, 16) zum Halten in jeder dieser Stellungen versehen ist und Einrichtungen zum Durchtrennen des Kabels (3) beim Übergang dieses Futterrohrs (8) aus seiner oberen in seine untere Stellung aufweist.
2. Ausrüstungsteil nach Anspruch 1, dadurch gekennzeichnet, daß es einen Stopfen (18) zum Verschluß dieses Futterrohres (8) an seinem oberen Ende aufweist, wobei der Stopf en die Bewegung des Futterrohrs (8) aus seiner oberen in seine untere Stellung unter dem Einfluß eines hydraulischen Drucks ermöglicht und an seinem Kopf ein Ablege- und Fangorgan (19) aufweist.
EP86400916A 1985-05-13 1986-04-25 Vorrichtung für Bohrgestänge oder dergleichen, bestehend aus einem Rohrstück mit einer seitlichen Öffnung für ein Kabel Expired EP0202151B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8507341A FR2581699B1 (fr) 1985-05-13 1985-05-13 Equipement pour train de tiges, tel qu'un train de tiges de forage, comprenant un raccord a fenetre laterale pour le passage d'un cable
FR8507341 1985-05-13

Publications (2)

Publication Number Publication Date
EP0202151A1 EP0202151A1 (de) 1986-11-20
EP0202151B1 true EP0202151B1 (de) 1988-10-12

Family

ID=9319288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400916A Expired EP0202151B1 (de) 1985-05-13 1986-04-25 Vorrichtung für Bohrgestänge oder dergleichen, bestehend aus einem Rohrstück mit einer seitlichen Öffnung für ein Kabel

Country Status (7)

Country Link
US (1) US4660635A (de)
EP (1) EP0202151B1 (de)
CA (1) CA1287848C (de)
DE (1) DE3660930D1 (de)
ES (1) ES8705079A1 (de)
FR (1) FR2581699B1 (de)
NO (1) NO171691C (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921217A (en) * 1982-10-31 1990-05-01 Erico International Corporation Ground rods and apparatus for forming and placing such rods
FR2583457B1 (fr) * 1985-06-14 1988-05-20 Inst Francais Du Petrole Raccord coupe-cable pour operations de forage, de production, de diagraphie ou d'intervention dans des puits.
US4913227A (en) * 1987-05-07 1990-04-03 Institut Francais Du Petrole Equipment for a drill pipe string including a side entry sub, a safety member for anchoring a cable on a support, and a method of using the equipment
FR2617232A1 (fr) * 1987-06-25 1988-12-30 Inst Francais Du Petrole Obturateur pour conduit ou passage de cable
US4886115A (en) * 1988-10-14 1989-12-12 Eastern Oil Tools Pte Ltd. Wireline safety mechanism for wireline tools
FR2652857B1 (fr) * 1989-10-11 1993-06-04 Inst Francais Du Petrole Dispositif de blocage pour un cable traversant la paroi d'un tube tel qu'un raccord a fenetre laterale.
US4981177A (en) * 1989-10-17 1991-01-01 Baker Hughes Incorporated Method and apparatus for establishing communication with a downhole portion of a control fluid pipe
US4944351A (en) * 1989-10-26 1990-07-31 Baker Hughes Incorporated Downhole safety valve for subterranean well and method
NO991967D0 (no) 1999-04-26 1999-04-26 Subsurface Technology As FremgangsmÕte for i r°rkoplinger Õ generere motholdskrefter for Õ posisjonere brudd pÕ hydrauliske og elektriske ledninger som glidende er festet langs et produksjonsr°r
GB2360052B (en) * 2000-03-09 2002-04-24 Fmc Corp Data line deployment in hydrocarbon wells
US6789627B2 (en) 2000-05-15 2004-09-14 Schlumberger Technology Corporation Control line cutting tool and method
US6763753B1 (en) * 2000-10-06 2004-07-20 Baker Hughes Incorporated Hydraulic wireline cutter
US7195072B2 (en) * 2003-10-14 2007-03-27 Weatherford/Lamb, Inc. Installation of downhole electrical power cable and safety valve assembly
US7264060B2 (en) * 2003-12-17 2007-09-04 Baker Hughes Incorporated Side entry sub hydraulic wireline cutter and method
EP2149670A1 (de) * 2008-07-31 2010-02-03 Services Pétroliers Schlumberger Verfahren und Vorrichtung zur Installation eines Kabels zur Erfassung oder für andere Operationen in einem Unterdruck-Bohrloch
US8225855B2 (en) * 2008-10-30 2012-07-24 Schlumberger Technology Corporation Surface equipment assembly for wellbore cable
US8261829B2 (en) 2009-07-29 2012-09-11 Hydrus Corporation, Inc. Well fishing method and system
US8418771B2 (en) * 2009-07-31 2013-04-16 Baker Hughes Incorporated Method and apparatus for releasing a coiled tubing internal conduit from a bottom hole assembly
US8573294B2 (en) * 2009-07-31 2013-11-05 Schlumberger Technology Corporation Cable bypass and method for controlled entry of a tubing string and a cable adjacent thereto
US9624745B2 (en) * 2013-06-28 2017-04-18 Oil Tools Of Norway Downhole umbilical release assembly
RU2570697C1 (ru) * 2014-06-17 2015-12-10 ООО "Сервисная Компания "Навигатор" Устройство для разъединения оборудования при проведении внутрискважинных работ с одновременным разъединением электрических либо гидравлических линий
CN107120072B (zh) * 2016-02-25 2019-08-13 中国石油化工股份有限公司 一种钢管电缆穿越装置
US10927632B2 (en) * 2016-09-15 2021-02-23 Halliburton Energy Services, Inc. Downhole wire routing
RU171311U1 (ru) * 2016-12-30 2017-05-29 Игорь Александрович Малыхин Устройство для гидромеханического разъединения оборудования при проведении внутрискважинных работ с одновременным разъединением электрических либо гидравлических линий
NO346281B1 (en) * 2020-06-25 2022-05-23 Target Intervention As Tube wire anchor and method of operating the same

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1776026A (en) * 1928-10-22 1930-09-16 Frank J Hinderliter Knife for use in wells
US1854477A (en) * 1929-09-19 1932-04-19 William H Mckissick Tubing bleeder
US2249358A (en) * 1939-12-30 1941-07-15 Standard Oil Dev Co Fishing tool
US2515377A (en) * 1945-02-05 1950-07-18 Otis Pressure Control Inc Cutting device
US3020957A (en) * 1958-07-11 1962-02-13 Jersey Prod Res Co Apparatus for removing sand from wells
US3073388A (en) * 1960-06-21 1963-01-15 Louis W Chenault Wire line cutter
US3661207A (en) * 1970-11-27 1972-05-09 Camco Inc Sliding sleeve assembly for a hydraulically set well packer
US4043392A (en) * 1973-11-07 1977-08-23 Otis Engineering Corporation Well system
US4031957A (en) * 1976-07-23 1977-06-28 Lawrence Sanford Method and apparatus for testing and treating well formations
CA1087519A (en) * 1977-04-25 1980-10-14 Michael B. Calhoun Well tools
US4388969A (en) * 1980-12-01 1983-06-21 Nl Industries, Inc. Borehole pipe side entry method and apparatus
FR2522059B2 (fr) * 1981-03-13 1987-02-13 Inst Francais Du Petrole Methode et dispositif pour effectuer, a l'aide d'outils specialises, des operations telles que des mesures, dans des portions de puits fortement inclinees sur la verticale, ou horizontales
US4427070A (en) * 1982-03-29 1984-01-24 O'brien-Goins Engineering, Inc. Circulating and pressure equalizing sub
US4524834A (en) * 1982-06-22 1985-06-25 Smith International, Inc. Cablehead side entry sub
US4506729A (en) * 1983-02-22 1985-03-26 Exxon Production Research Co. Drill string sub with self closing cable port valve
US4512411A (en) * 1984-04-19 1985-04-23 Camco Incorporated Fluid actuated energy charged well service line cutter

Also Published As

Publication number Publication date
NO171691C (no) 1993-04-21
ES554884A0 (es) 1987-04-16
FR2581699A1 (fr) 1986-11-14
NO861878L (no) 1986-11-14
US4660635A (en) 1987-04-28
CA1287848C (fr) 1991-08-20
FR2581699B1 (fr) 1988-05-20
EP0202151A1 (de) 1986-11-20
NO171691B (no) 1993-01-11
ES8705079A1 (es) 1987-04-16
DE3660930D1 (en) 1988-11-17

Similar Documents

Publication Publication Date Title
EP0202151B1 (de) Vorrichtung für Bohrgestänge oder dergleichen, bestehend aus einem Rohrstück mit einer seitlichen Öffnung für ein Kabel
EP0206909B1 (de) Drahtseilschneidmuffe zum Bohren, Fördern, Messen oder Ausführen von Arbeiten in Bohrlöchern
EP0526293B1 (de) Verfahren und Vorrichtung zum Ausführen von Messungen und/oder Eingriffen in einem fertigen Bohrloch oder während des Bohrens
EP0187599B1 (de) Druckmittelangetriebene Vorrichtung zum Messen und Ausführen von Arbeiten in einem abgelenkten Bohrloch während der Injektion oder der Förderung
EP0122839B1 (de) Verfahren und Vorrichtung zum Messen und/oder Ausführen von Arbeiten in einem Bohrloch
EP0526294B1 (de) Anlage zum Ausführen von Messungen oder Eingriffen im fertigen Bohrloch oder während des Bohrens
US4597440A (en) Method and apparatus for displacing logging tools in deviated wells
CA1320125C (fr) Procede pour manoeuvrer au moins un dispositif a l'interieur d'un tubage et ensemble permettant la mise en oeuvre du procede
FR2501777A1 (fr) Methode et dispositif pour effectuer, a l'aide d'outils specialises, des operations telles que des mesures, dans des portions de puits fortement inclinees sur la verticale, ou horizontales
WO1988005111A1 (fr) Methode et dispositif pour effectuer des mesures ou/et interventions dans une portion de puits fortement inclinee et son application a la realisation de profils sismiques
FR2648509A1 (fr) Methode et dispositif pour conduire des operations de perforation dans un puits
EP0052672B1 (de) Verfahren zum Herausziehen eines im Bohrloch auswechselbaren Bohrkernbehälters und ein hierfür vorgesehener Fangkopf
US3435895A (en) Automatic wireline tool trap assembly
EP0548303B1 (de) Verfahren zum durchführen vom messungen nach dem ausbau eines im bohrloch immobilisierten messwerkzeuges
EP0192558A1 (de) Vorrichtung zum Einordnen eines Werkzeugs oder Instruments in einem Rohr, insbesondere eine selbständige hydraulische Pumpe, die durch ein Steigrohr gewinnt
FR2522059A2 (fr) Methode et dispositif pour effectuer, a l'aide d'outils specialises, des operations telles que des mesures, dans des portions de puits fortement inclinees sur la verticale, ou horizontales
EP0296207B1 (de) Verfahren und vorrichtung zum ausführen von messungen und/oder eingriffen in einem unter hydraulischem druck stehenden bohrloch
EP0165154B1 (de) Verfahren und Vorrichtung, um mit Hilfe von Spezialwerkzeugen Operationen wie Messungen in stark gegen die Vertikale geneigten oder horizontalen Bohrlochteilen vorzunehmen
FR2734863A1 (fr) Procede et moyens pour la remise en securite d'un puits petrolier en cas de defaut de la ligne de commande hydraulique de sa vanne de securite de fond
EP0484218B1 (de) Vorrichtung zum Ausführen von Arbeiten in nichteruptiven abgelenkten Bohrlöchern
US6412552B1 (en) Cable protector
US5301561A (en) Method and apparatus for taking a fluid sample
FR2609103A1 (fr) Methode et dispositif pour effectuer des mesures ou/et interventions dans une zone d'un puits et controler la circulation de fluide vers une autre zone de ce puits ou l'on effectue une compression hydraulique
FR2609102A1 (fr) Methode et dispositif pour effectuer des mesures ou/et interventions dans une zone d'un puits soumise a une compression hydraulique

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 DE GB IT NL

17P Request for examination filed

Effective date: 19870318

17Q First examination report despatched

Effective date: 19871130

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE GB IT NL

REF Corresponds to:

Ref document number: 3660930

Country of ref document: DE

Date of ref document: 19881117

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
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
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940325

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19940415

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19940430

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940505

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19950425

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19950430

BERE Be: lapsed

Owner name: INSTITUT FRANCAIS DU PETROLE

Effective date: 19950430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19951101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950425

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19951101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050425