EP0397870A1 - Procede de cuvelage de la veine de production dans un puits - Google Patents

Procede de cuvelage de la veine de production dans un puits Download PDF

Info

Publication number
EP0397870A1
EP0397870A1 EP89902215A EP89902215A EP0397870A1 EP 0397870 A1 EP0397870 A1 EP 0397870A1 EP 89902215 A EP89902215 A EP 89902215A EP 89902215 A EP89902215 A EP 89902215A EP 0397870 A1 EP0397870 A1 EP 0397870A1
Authority
EP
European Patent Office
Prior art keywords
layer
productive layer
productive
tour
bore
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
Application number
EP89902215A
Other languages
German (de)
English (en)
Other versions
EP0397870A4 (en
EP0397870B1 (fr
Inventor
Vadim Vadimovich Artynov
Gabdrashit Sultanovich Abdrakhmanov
Rustam Khamitovich Ibatullin
Renat Khaliullovich Muslimov
Rashat Khasanovich Fatkullin
Rashid Akhmadullovich Khabibullin
Yaroslav Vasilievich Vakula
Vitaly Petrovich Filippov
Salikhzian Mukhametzyanovich Mingazov
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.)
TATARSKY GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT NEFTYANOI PROMYSHLENNOSTI
Original Assignee
TATARSKY GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT NEFTYANOI PROMYSHLENNOSTI
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 TATARSKY GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT NEFTYANOI PROMYSHLENNOSTI filed Critical TATARSKY GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT NEFTYANOI PROMYSHLENNOSTI
Publication of EP0397870A1 publication Critical patent/EP0397870A1/fr
Publication of EP0397870A4 publication Critical patent/EP0397870A4/de
Application granted granted Critical
Publication of EP0397870B1 publication Critical patent/EP0397870B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like

Definitions

  • the invention relates to a drilling method, in particular a method for fastening the productive layer within a hole.
  • this invention can be used to protect the productive layers from contamination in the wellbore liquid and cement slurry during wellbore fastening.
  • the liquid medium i.e. drilling fluids and cement slurries
  • the liquid medium i.e. drilling fluids and cement slurries
  • a method for fastening the productive layer within a borehole is already known, in which the productive layer is opened up, a production pipe tour is installed, this is cemented above the productive layer and the non-cemented section of this pipe tour is perforated in the area of the productive layer, i.e. the shift is opened up for the second time (Ju.V. Vadetsky "Production of oil and gas wells", 1923, publ. "Nedra” (Moscow), pp. 346 to 348).
  • a major disadvantage of this method is that it does not guarantee a reliable separation of the productive layer from the deeper layers because the pipe route is cemented above the productive layer.
  • Another disadvantage is that the known method proves to be unsuitable if the productive layers are inclined to fall, because the annular space between the production tube tour and the productive layer is filled with the fallen rock, which reduces the filtration of the product from the Layer more difficult.
  • a fundamental disadvantage of this method is the increase in the thickness of the insulating layer, which is formed by the wall of the impermeable casing, the production tube tour and the cement ring therebetween, which makes the repeated layer digestion more difficult and the effectiveness of product filtration from the layer into the bore is impaired .
  • the use of a production tube tour with a smaller diameter leads to a reduction in the filtration area of the layer, which results in a reduction in the production rate of the bore.
  • this method requires additional installation and removal work for the attachment of the impermeable cover, which is associated with a considerable expenditure of time and materials and a higher work capacity.
  • the invention has for its object to provide a method for fastening the productive layer within a bore, which makes it possible to increase the filtration area while reducing the thickness of the insulating layer separating the productive layer from other layers.
  • the task is solved in that at egg. Nem process for fastening the productive layer within a well, in which the productive layer is disrupted, covered with a shell impermeable to the liquid medium in the form of profile tubes, which are expanded when they are inserted by generating a pressure drop in them, and the production tube tour is installed and cemented and the productive layer on again is closed, according to the invention, before the insertion of the impermeable casing, the section of the bore lying in the region of the productive layer is expanded and the installation of the production tube tour is stopped after its introduction into the upper part of the impermeable casing.
  • the invention enables the filtration area and the conveying rate of the layer to increase.
  • the installation and insertion of the impermeable casing in the area of the productive layer is carried out together with the production pipe tour.
  • the section of the bore lying in the region of the productive layer is expanded by a factor of 1.5 to 2 of the outside diameter of the production tube tour.
  • An increase in the diameter of the bore in the area of the productive layer less than 1.5 times the diameter of the production tube tour is not expedient; because the area of the liquid filtration from the layer increases only insignificantly, while an expansion more than twice the diameter of the production tube tour is limited by the physical behavior of the impermeable casing made of profile tubes, which is due to the limit values of their expansion.
  • the procedure for fastening the productive layer within the bore is implemented as follows.
  • the drill string is then removed together with the chisel and the reamer, and the production tube tour is inserted into the bore, which is provided with a device for cementing it and an impermeable casing in the form of profile tubes which are attached to the lower end thereof.
  • the entry of this pipe tour is stopped as soon as the impermeable envelope comes to stand opposite the expanded area of the productive layer.
  • the impermeable casing is expanded by pressing the liquid into the interior of the pipes until the casing lies tight against the wall of the enlarged area of the productive layer, after which the production pipe tour is cemented and the productive layer is perforated by the impermeable casing according to the known technology is unlocked again.
  • the method is carried out with the aid of a device which has a drill string 1 (FIG. 1) with a chisel 2 has at its lower end and an after-clearer 3 arranged above with extendable elements 4.
  • Another group of equipment for carrying out the method (Fig. 2 and 3) contains a production pipe tour 5, with the lower end of which a device 6 is connected for its cementation, which serves as a continuation.
  • the device 6 has a transition 7 with openings 8 and 9 made in its wall, in the interior of which a bush 10 with a side opening 11 and a seat 12 is accommodated, which is secured against axial displacement by a pin 13.
  • an impermeable sheath 14 is connected, which ends with a shoe 15 with a seat 16 and ball valve 17.
  • a ball 18 (FIG. 3) is provided, which is accommodated in the seat 12 of the sleeve 10.
  • the additional sealing of the space behind the impermeable casing 14 can be achieved with the aid of a sealing paste (not shown) which is introduced into the recesses of the profile tubes of the impermeable casing 14.
  • the pressure is released and the ball 18 (FIG. 3) is thrown into the production tube tour 5, which ball descends into the seat 12 of the bushing 10 arranged in the passage 7 of the transition 7.
  • the liquid pressure is increased again, under the influence of which the pins 13 are cut, which secure the sleeve 10 against the axial displacements, and the sleeve 10 moves into the lower end position (FIG. 3).
  • the liquid is displaced from the cavity 21 through the opening 9 into the annular space, so that the lateral openings 11 and 8 of the sleeve 10 and the transition 7 coincide with each other.
  • the production tube tour 5 is then cemented using the conventional method, for which purpose cementing units (not shown) are used.
  • the layer is applied in accordance with known processes such as e.g.
  • the perforation is opened again and the product is removed from the layer 19 through the holes 22 (FIG. 4) of the perforation.
  • the invention can be used to protect the productive layers from contamination with the liquid in the well and the cement slurry during the fastening of the well and to increase the oil release of the layers.

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Le procédé décrit consiste à découvrir la veine de production (19) et à agrandir le trou de sonde dans une zone (20) de la veine de production (19). Puis cette dernière est obturée par une enveloppe (14) imperméable aux milieux liquides et constituée de tubes profilés élargis au cours de leur pose par la création d'une pression à l'intérieur. Ensuite, la colonne (5) de tubes d'exploitation est abaissée dans le puits et cimentée, avec réouverture subséquente de la veine (19). La descente de la colonne (5) de tubes d'exploitation est stoppée après son introduction dans la partie supérieure de l'enveloppe imperméable (14).
EP89902215A 1988-11-22 1988-11-22 Procede de cuvelage de la veine de production dans un puits Expired - Lifetime EP0397870B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/SU1988/000235 WO1990005832A1 (fr) 1988-11-22 1988-11-22 Procede de cuvelage de la veine de production dans un puits
CA000606032A CA1320434C (fr) 1988-11-22 1989-07-18 Methode d'obsturation d'un puits realise dans une formation productrice

Publications (3)

Publication Number Publication Date
EP0397870A1 true EP0397870A1 (fr) 1990-11-22
EP0397870A4 EP0397870A4 (en) 1991-12-27
EP0397870B1 EP0397870B1 (fr) 1997-02-05

Family

ID=25672891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89902215A Expired - Lifetime EP0397870B1 (fr) 1988-11-22 1988-11-22 Procede de cuvelage de la veine de production dans un puits

Country Status (8)

Country Link
US (1) US5031699A (fr)
EP (1) EP0397870B1 (fr)
JP (1) JP2703379B2 (fr)
AU (1) AU613452B2 (fr)
CA (1) CA1320434C (fr)
DE (1) DE3855788D1 (fr)
NO (1) NO300988B1 (fr)
WO (1) WO1990005832A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7121351B2 (en) 2000-10-25 2006-10-17 Weatherford/Lamb, Inc. Apparatus and method for completing a wellbore
US7367389B2 (en) 2003-06-16 2008-05-06 Weatherford/Lamb, Inc. Tubing expansion

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2735523B1 (fr) * 1995-06-13 1997-07-25 Inst Francais Du Petrole Methode et dispositif de tubage de puits avec un tube en composite
US6029748A (en) * 1997-10-03 2000-02-29 Baker Hughes Incorporated Method and apparatus for top to bottom expansion of tubulars
US6021850A (en) * 1997-10-03 2000-02-08 Baker Hughes Incorporated Downhole pipe expansion apparatus and method
GB9723031D0 (en) * 1997-11-01 1998-01-07 Petroline Wellsystems Ltd Downhole tubing location method
US6073692A (en) * 1998-03-27 2000-06-13 Baker Hughes Incorporated Expanding mandrel inflatable packer
US6712154B2 (en) 1998-11-16 2004-03-30 Enventure Global Technology Isolation of subterranean zones
US6745845B2 (en) 1998-11-16 2004-06-08 Shell Oil Company Isolation of subterranean zones
US6640903B1 (en) 1998-12-07 2003-11-04 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US6823937B1 (en) 1998-12-07 2004-11-30 Shell Oil Company Wellhead
US6575240B1 (en) 1998-12-07 2003-06-10 Shell Oil Company System and method for driving pipe
US6557640B1 (en) 1998-12-07 2003-05-06 Shell Oil Company Lubrication and self-cleaning system for expansion mandrel
US7357188B1 (en) 1998-12-07 2008-04-15 Shell Oil Company Mono-diameter wellbore casing
US6634431B2 (en) 1998-11-16 2003-10-21 Robert Lance Cook Isolation of subterranean zones
US6739392B2 (en) 1998-12-07 2004-05-25 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
GB2344606B (en) 1998-12-07 2003-08-13 Shell Int Research Forming a wellbore casing by expansion of a tubular member
GB0224807D0 (en) * 2002-10-25 2002-12-04 Weatherford Lamb Downhole filter
AU770359B2 (en) 1999-02-26 2004-02-19 Shell Internationale Research Maatschappij B.V. Liner hanger
US6419025B1 (en) 1999-04-09 2002-07-16 Shell Oil Company Method of selective plastic expansion of sections of a tubing
EP1169547B1 (fr) 1999-04-09 2003-07-02 Shell Internationale Researchmaatschappij B.V. Procede permettant de creuser un puits de forage dans une formation souterraine
US6598677B1 (en) 1999-05-20 2003-07-29 Baker Hughes Incorporated Hanging liners by pipe expansion
GC0000211A (en) 1999-11-15 2006-03-29 Shell Int Research Expanding a tubular element in a wellbore
US8746028B2 (en) * 2002-07-11 2014-06-10 Weatherford/Lamb, Inc. Tubing expansion
GB0306774D0 (en) * 2003-03-25 2003-04-30 Weatherford Lamb Hydraulically assisted tubing expansion
US7090025B2 (en) * 2000-10-25 2006-08-15 Weatherford/Lamb, Inc. Methods and apparatus for reforming and expanding tubulars in a wellbore
US7350585B2 (en) * 2001-04-06 2008-04-01 Weatherford/Lamb, Inc. Hydraulically assisted tubing expansion
WO2004081346A2 (fr) 2003-03-11 2004-09-23 Enventure Global Technology Appareil destine a la dilatation radiale et a la deformation plastique d'un element tubulaire
US7740076B2 (en) 2002-04-12 2010-06-22 Enventure Global Technology, L.L.C. Protective sleeve for threaded connections for expandable liner hanger
US6732806B2 (en) 2002-01-29 2004-05-11 Weatherford/Lamb, Inc. One trip expansion method and apparatus for use in a wellbore
CA2482278A1 (fr) 2002-04-15 2003-10-30 Enventure Global Technology Manchon protecteur destine aux connexions filetees d'un dispositif de suspension pour colonne de tubage perdue expansible
MXPA05003115A (es) 2002-09-20 2005-08-03 Eventure Global Technology Evaluacion de formabilidad de un tubo para miembros tubulares expandibles.
US7886831B2 (en) 2003-01-22 2011-02-15 Enventure Global Technology, L.L.C. Apparatus for radially expanding and plastically deforming a tubular member
CA2461855C (fr) * 2003-03-25 2008-05-20 Weatherford/Lamb, Inc. Expansion de colonne de production assistee par vibrations
CA2523862C (fr) 2003-04-17 2009-06-23 Enventure Global Technology Appareil servant a etendre radialement et deformer plastiquement un element tubulaire
US7441606B2 (en) * 2003-05-01 2008-10-28 Weatherford/Lamb, Inc. Expandable fluted liner hanger and packer system
GB0318573D0 (en) * 2003-08-08 2003-09-10 Weatherford Lamb Tubing expansion tool
US7712522B2 (en) 2003-09-05 2010-05-11 Enventure Global Technology, Llc Expansion cone and system
GB2432866A (en) 2004-08-13 2007-06-06 Enventure Global Technology Expandable tubular
CA2523106C (fr) * 2004-10-12 2011-12-06 Weatherford/Lamb, Inc. Methodes et appareil de fabrication de materiel tubulaire expansible
CA2597909A1 (fr) * 2005-02-14 2006-08-24 Enventure Global Technology, L.L.C. Expansion radiale d'un tubage de puits de forage contre une formation
CN101238272B (zh) * 2005-07-22 2013-11-13 国际壳牌研究有限公司 形成井下环形阻挡层的装置和方法
CA2555563C (fr) 2005-08-05 2009-03-31 Weatherford/Lamb, Inc. Dispositif et methodes de creation d'une barriere annulaire de fond de trou
EP2297427A4 (fr) * 2008-05-30 2014-06-25 Packers Plus Energy Serv Inc Raccord double femelle de cimentation pour cimenter l'espace annulaire
CN109869108A (zh) * 2018-10-22 2019-06-11 中国石油集团渤海钻探工程有限公司 一种错断井膨胀管补贴装置及其补贴方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644523A (en) * 1949-03-12 1953-07-07 Cicero C Brown Method and apparatus for connecting well casings to liners
US2804148A (en) * 1953-05-14 1957-08-27 California Research Corp Method and apparatus for providing a rigid tube in a well bore
US3051255A (en) * 1960-05-18 1962-08-28 Carroll L Deely Reamer
US3419080A (en) * 1965-10-23 1968-12-31 Schlumberger Technology Corp Zone protection apparatus
US3918522A (en) * 1974-01-28 1975-11-11 Jr George O Suman Well completion method and system
US4618009A (en) * 1984-08-08 1986-10-21 Homco International Inc. Reaming tool

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479394A (en) * 1944-08-24 1949-08-16 Phillips Petroleum Co Oil well implement
US2812025A (en) * 1955-01-24 1957-11-05 James U Teague Expansible liner
US3593795A (en) * 1969-05-19 1971-07-20 Shell Oil Co Method and apparatus for drilling and producing wells in a formation susceptible to compaction
SU911015A1 (ru) * 1980-06-18 1983-03-10 Татарский Государственный Научно-Исследовательский И Проектный Институт Нефтяной Промышленности Способ заканчивани скважин
CH652437A5 (de) * 1980-09-15 1985-11-15 Haeny & Cie Ag Verfahren und vorrichtung zum ermitteln des injektionsdruckes bei baulichen injektionen.
US4378843A (en) * 1981-02-11 1983-04-05 Suman Jr George O Method for completion of wells
US4440226A (en) * 1982-12-08 1984-04-03 Suman Jr George O Well completion method
SU1234587A1 (ru) * 1984-11-22 1986-05-30 Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам Способ заканчивани скважин со слабосцементированными коллекторами

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644523A (en) * 1949-03-12 1953-07-07 Cicero C Brown Method and apparatus for connecting well casings to liners
US2804148A (en) * 1953-05-14 1957-08-27 California Research Corp Method and apparatus for providing a rigid tube in a well bore
US3051255A (en) * 1960-05-18 1962-08-28 Carroll L Deely Reamer
US3419080A (en) * 1965-10-23 1968-12-31 Schlumberger Technology Corp Zone protection apparatus
US3918522A (en) * 1974-01-28 1975-11-11 Jr George O Suman Well completion method and system
US4618009A (en) * 1984-08-08 1986-10-21 Homco International Inc. Reaming tool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9005832A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7121351B2 (en) 2000-10-25 2006-10-17 Weatherford/Lamb, Inc. Apparatus and method for completing a wellbore
US7367389B2 (en) 2003-06-16 2008-05-06 Weatherford/Lamb, Inc. Tubing expansion

Also Published As

Publication number Publication date
JPH03503302A (ja) 1991-07-25
NO903218D0 (no) 1990-07-18
EP0397870A4 (en) 1991-12-27
AU613452B2 (en) 1991-08-01
EP0397870B1 (fr) 1997-02-05
DE3855788D1 (de) 1997-03-20
JP2703379B2 (ja) 1998-01-26
WO1990005832A1 (fr) 1990-05-31
NO300988B1 (no) 1997-08-25
CA1320434C (fr) 1993-07-20
AU3052089A (en) 1990-06-12
NO903218L (no) 1990-07-18
US5031699A (en) 1991-07-16

Similar Documents

Publication Publication Date Title
EP0397870A1 (fr) Procede de cuvelage de la veine de production dans un puits
DE60305733T2 (de) Bohren eines bohrlochs
DE4393857C2 (de) Verfahren und Vorrichtung zum Abdichten der Stoßstelle zwischen einem Hauptbohrloch und einem Zweigbohrloch
DE69820153T2 (de) Verfahren und Vorrichtung zur Zementierung eines Bohrloches
DE69830059T2 (de) Verformte schablone für mehrere bohrungen und verfahren zu deren gebrauch
DE3125035C2 (fr)
DE60219689T2 (de) Verfahren zum bohren eines produktionbohrloches ohne bohrlochperforieren und -packen
DE69634167T2 (de) Vorrichtung und Verfahren zum Füllen einer Bohrlochverrohrung
DE602004009910T2 (de) Verfahren zur herstellung eines bohrlochs in einer erdformation
DE60115688T2 (de) Zementverrohrungsschuh für einzeldurchmesserbohrloch
EP0353309A1 (fr) Procede pour construire un puits
DE60016829T2 (de) Verbesserungen im Bezug auf das Unterwasserbohren von Bohrlöchern
DE60009861T2 (de) Verfahren zum bohren sekundärer abzweigungslöcher in einem bohrlochsystem
DE3103762A1 (de) Einrichtung zum regeln der geschwindigkeit einer geraetebewegung in der verrohrung eines bohrlochs
DE3200293A1 (de) Verfahren und vorrichtung zum verringern des bestrebens eines bohrstranges, unter der wirkung von differentialdruck zu haften oder festzukleben
EP0380909A2 (fr) Procédé et outil de carottage pour le forage de formations rocheuses souterraines
DE3309031C2 (de) Bohrgerät zum Erdbohren und Testen von Grundwasserhorizonten
EP0471158B1 (fr) Procédé et installation pour empêcher les fuites d'eau d'infiltration dans une décharge de déchets
DE112014006644T5 (de) Verfahren zum Steuern von Energie im Inneren einer Perforationskanone unter Verwendung einer endothermen Reaktion
DE3941763C2 (fr)
DE1226057B (de) Anschlussaggregat fuer Tiefbohrungen
DE2505668A1 (de) Vorrichtung an bohrausruestungen
WO1988004352A2 (fr) Procede pour realiser un puits
DE19535906B4 (de) Verfahren zur Herstellung einer verrohrten Gewinnungsbohrung
DE3703534C2 (fr)

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

17P Request for examination filed

Effective date: 19900724

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

A4 Supplementary search report drawn up and despatched

Effective date: 19911107

AK Designated contracting states

Kind code of ref document: A4

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 19930924

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

ITF It: translation for a ep patent filed

Owner name: PROROGA CONCESSA IN DATA: 22.01.97;FIAMMENGHI - DO

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970211

REF Corresponds to:

Ref document number: 3855788

Country of ref document: DE

Date of ref document: 19970320

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
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: FR

Payment date: 20051125

Year of fee payment: 18

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

Ref country code: DE

Payment date: 20061116

Year of fee payment: 19

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

Ref country code: GB

Payment date: 20061122

Year of fee payment: 19

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

Ref country code: IT

Payment date: 20061130

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070731

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: 20061130

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

Effective date: 20071122

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

Ref country code: DE

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

Effective date: 20080603

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 NON-PAYMENT OF DUE FEES

Effective date: 20071122

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: 20071122