EP0325541A1 - Vorrichtung und Verfahren zum Isolieren produzierender Schichten in einer Bohrung - Google Patents

Vorrichtung und Verfahren zum Isolieren produzierender Schichten in einer Bohrung Download PDF

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Publication number
EP0325541A1
EP0325541A1 EP89400163A EP89400163A EP0325541A1 EP 0325541 A1 EP0325541 A1 EP 0325541A1 EP 89400163 A EP89400163 A EP 89400163A EP 89400163 A EP89400163 A EP 89400163A EP 0325541 A1 EP0325541 A1 EP 0325541A1
Authority
EP
European Patent Office
Prior art keywords
well
space
production
membrane
column
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
EP89400163A
Other languages
English (en)
French (fr)
Other versions
EP0325541B1 (de
Inventor
André Cheymol
Alain Basse
François Claude Gueuret
Gilbert Claude Blu
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.)
Hutchinson SA
MERIP OIL TOOLS INTERNATIONAL SA
Original Assignee
Hutchinson SA
MERIP OIL TOOLS INTERNATIONAL SA
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 Hutchinson SA, MERIP OIL TOOLS INTERNATIONAL SA filed Critical Hutchinson SA
Publication of EP0325541A1 publication Critical patent/EP0325541A1/de
Application granted granted Critical
Publication of EP0325541B1 publication Critical patent/EP0325541B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B33/134—Bridging plugs
    • 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
    • E21B33/12—Packers; Plugs
    • E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt

Definitions

  • the present invention relates to a method for manufacturing in situ a seal between an inner wall portion of an oil well, or the like, and an outer wall portion of a production column (or exploitation ) of this well, as well as a device for implementing this method.
  • the invention also relates to a method of isolating (or separating) between at least two production zones of a well.
  • casing in English terminology -saxonne: we also speak of casing in French terminology.
  • sealing is obtained by cementing the aforementioned space using, sometimes, auxiliary sealing devices called inflatable cementing packers.
  • These packers are O-ring seals comprising a double elastomer wall reinforced by a metal braid; this double wall delimits an inflatable chamber using cement (or water or oil) up to 1.6 times their nominal diameter, under a maximum allowable pressure of 110 to 120 bars, via a safety valves.
  • the subject of the present invention is a method of in situ manufacturing of a seal for an annular space comprised between an inner wall portion of a well and a corresponding outer wall portion of a production column, which are adjacent to a production area of this well, which process comprises the following steps: - delimitation of the annular space intended to be occupied by the seal, - Injection into the annular space thus delimited of a material intended to completely fill this space and to ensure the required seal between well and production column by adapting to the irregularities of the wall of the well.
  • the material to be injected into the annular space consists of a crosslinking mastic resistant to effluents from the well.
  • it further comprises an operation of separation of the injected material, with respect to the fluids normally existing between the production column and the well, and an operation of ejection of these fluids outside the aforementioned space so that it is completely filled by the injection of the sealing material.
  • the present invention also relates to a device for implementing the method according to the invention, characterized in that it comprises: - two means of confining the annular space to be sealed, means for separating the material to be injected, with respect to the fluids normally existing between the production column and the well, and the ejection of these fluids outside the aforementioned space while allowing it to be completely filled with the sealing material.
  • the means for confining said space consist of first and second elastomeric annular membranes carried by the production column and applied against the latter at the ends of a wall portion outer of this column corresponding to a portion of the inner wall of the well, - each of these portions defining the axial size of the aforementioned space - between each confinement membrane and the existing production column an inflatable chamber using 'a pressurized fluid, such as water or oil, which expands the membrane radially until it comes into contact with the opposite wall of the well, under the action of the inflation pressure.
  • a pressurized fluid such as water or oil
  • the internal and external ends of the two containment membranes cooperate with means (known per se) making it possible to secure them to the production column, respectively, in a fixed manner and so as to slide the along the latter, under the action of the inflation pressure of said confinement membranes.
  • the means for separating the material to be injected, from the fluids normally existing between the well and the production column, and for ejecting these fluids outside the above space include: - a (third) annular elastomeric separation membrane interposed between the two containment membranes and applied against the production column, on the outer wall portion thereof which substantially defines the axial size of the aforementioned space, between the separation membrane and the production column an injection chamber for the material injected under pressure, which fills with this material, the distribution of which it guides in the aforementioned space, under the action of the injection pressure, ci radially expanding the separation membrane, thereby pushing the fluids present in the aforementioned space towards the confinement membranes previously also radially expanded by said inflation pressure.
  • each confinement membrane a plurality of axial grooves distributed uniformly on the external surface of each confinement membrane, which grooves define channels for the passage of the abovementioned fluids when the confinement membranes, expanded radially under the action of the inflation pressure, come into contact with the wall of the well, said separation membrane having an annular zone of least resistance which is intended to tear under the action of the injection pressure, the portions of the membrane thus torn closing the aforementioned channels and preventing the reflux of fluids expelled by the injection pressure into this space, which is thus completely filled with said sealing material.
  • the present invention further relates to a method of isolation (or separation) between at least two production zones of a well, separated by an axial gap, characterized in that one manufactures in situ between the well and a column production of this well, a seal at least at each of the ends of the aforementioned gap between the two production areas, using the method and the implementation device in accordance with the foregoing provisions.
  • FIGS. 1 to 4 schematically illustrate the different steps of the method according to the invention, aimed at manufacturing in situ a seal in an annular space which separates an inner wall portion of a well from a corresponding wall portion external of a production column of this well
  • - Figure 5 is a cross section of one of the two containment membranes of the aforementioned space, which composes a device for implementing the above process, illustrated in FIGS. 1 to 4,
  • - Figure 6 is a schematic illustration of a well with its production column in which are represented two production areas which are isolated (or separated) from each other by two seals made using the method according to invention.
  • zones Z1 and Z2 illustrated in FIG. 6 To isolate (or separate) two production zones, such as zones Z1 and Z2 illustrated in FIG. 6, from a well P, it is necessary to prevent any communication between them by the annular space 5 separating the well P of its production column T over the entire height H of the interval between the two zones Z1 and Z2.
  • the present invention provides a solution which, although not intended to systematically replace the
  • the aim of the cementing technique is to reduce it as much as possible (for example, by limiting it - for practical reasons of surface exploitation - to the only upper part of the well, as illustrated schematically by the reference C in Figure 6 ) with significant advantages (compared to the assisted cementing technique, possibly by the use of inflatable cementation packers), some of which have been mentioned under A) to E).
  • the insulation between two zones Z1 and Z2 is obtained by manufacturing in situ seals 18 at the ends of the gap H separating the two zones, each joint being obtained by a prior step of delimitation of the annular space intended to be occupied by the seal, followed by a step of injecting into the annular space thus delimited, a material capable not only of completely filling this space, but also of adapting perfectly to the irregularities in the rock delimiting the internal wall of the well.
  • the crosslinking time can be between approximately 1 hour and approximately 24 hours, depending on the temperature existing at the level of the injection of the sealant as well as the needs of the operation.
  • the in situ manufacturing process for the seal provides for the separation of the sealant from the mud during injection, while ejecting the mud from the space which must be occupied by the sealant.
  • a device 1 essentially comprising two means for confining the annular space to be sealed and means for separating the putty to be injected from the mud, and for ejecting it. this outside the space that needs to be filled with putty.
  • the containment means consist of two identical elastomeric annular membranes, 2, which are applied against the external surface of the production column T.
  • each confinement membrane 2 and the production column T there is a chamber 6 inflatable using a pressurized fluid, such as water or oil, which expands the membrane radially (cf. FIG. 2) under the action of the inflation pressure, until it comes into contact with the wall of the well P, thus delimiting the space 5 to be sealed.
  • a pressurized fluid such as water or oil
  • the internal ends 3 (relative to the space 5) of each of these membranes are fixedly secured to the column T by means (not shown, as known to technicians in the field). material) which at the same time inject the inflation fluid into the containment membranes.
  • the device for implementing the method according to the invention comprises a third membrane 8, the ends 9 and 10 of which are connected to the internal ends 3 of the containment membranes 2 and fixedly secured to the column T together with the ends 3.
  • the presence of the membrane 8 therefore makes it possible to effect the injection of the mastic 11 (of course, through the wall of the production column T) in the chamber 20 delimited between the membrane 8 and the column T, so that that -this does not come into contact with the mud existing in space 5.
  • each of the containment membranes 2 has axial grooves 12 (see also FIG. 5) distributed uniformly around the periphery of each membrane. These grooves define channels 13 when the membranes come into contact with the internal wall of the well P.
  • the mud existing in the space 5 is therefore ejected outside this space by the passage channels 13 under the action of the mastic injection pressure (the pressure difference between the mastic pressure and the pressure of the completion sludge existing in the space to be sealed is, for example, of the order of about 30 bars) on the membrane partition 8, which - as can be seen in Figure 3 - also has the role of guiding the distribution of the sealant 11 in space 5.
  • the separation membrane 8 has an annular zone 15 of less resistance which tears under the action of the pressure d injection, when the membrane has expanded until most of the mud has been ejected through the channels 13.
  • the tearing of the membrane 8 divides it into two portions 16 and 17 which seal the channels 13 at the end of the injection of the putty and which prevent the reflux of the mud towards the space 5: in this way, the crosslinking of the putty takes place in the best conditions thus making it possible to obtain a perfectly tight seal 18.
  • Figures 1 to 4 schematically represent the different stages of manufacture of the seal 18, using the device 1 for implementing this method.
  • FIG. 1 illustrates the phase prior to the execution of the manufacturing process, which includes the descent into the well P of the production column T equipped with a device 1 pressed against the external surface of the column: it is possible to appreciate that because of the relatively thin thickness of the membranes constituting the device 1, there is a relatively large space between the latter and the well P, which avoids the problems of piston and damage existing with the cement packers inflatable from the prior art.
  • the reduction in thickness, in particular of the containment membranes 2 is due to the fact that the latter, in the inflated state, do not constitute seals but, as has been specified above, essentially provisional means confinement of the annular space 5 to be sealed.
  • FIG. 2 illustrates the first step of the process for manufacturing the seal 18, which consists in delimiting the space 5 by inflating the chambers 6 delimited between each confinement membrane 2 and the production column T.
  • FIG. 3 illustrates the second phase of the process for manufacturing the seal 18, consisting in injecting the putty 11 into the chamber 20 delimited between the separation membrane 8 and the production column T.
  • FIG. 4 illustrates the situation existing at the end of the second step, when the portions 16 and 17 of the separation membrane 8, torn at its zone of least resistance 15, close the passage channels 13 thus preventing the reflux of the mud through these channels and allowing the complete filling of the space 5 with the putty 11 so as to produce a perfect seal, 18.
  • the invention is in no way limited to those of its modes of implementation, embodiment and application which have just been described more explicitly; on the contrary, it embraces all the variants which may come to the mind of the technician in the matter, without departing from the scope, or the scope, of the present invention.
  • the injection of sealant can be done through an orifice formed in the wall of the production column T (and, of course, normally closes with a valve sensitive to a certain pressure threshold ) and this by descending inside the column an injection device
  • other systems can be used for this purpose.
  • the stuffing box cooperates with two support rings and two VHT seals (designated by the Anglo-Saxon names “back-up rings” and “chevron packing”).
  • O-rings carried by a seal ring, ensure the seal during the sliding of the nut and the stuffing box.
  • This nut can be, if necessary, fixed, at the other end, to a breaking sleeve ("shear sleeve"), the function is to keep the membrane contracted during the descent of the production column.
  • the separation membrane which may not have zones of least resistance.
  • the tearing of the separation membrane could be caused by the sole action of the injection pressure, without it being necessary to provide any zone of least resistance in the membrane.
  • a very deformable and non-tearable membrane which is capable of adapting (by simple deformation, therefore), under the action of the injection pressure, to the irregularities of the internal surface of the well, without that it is necessary to provide for the tearing of the membrane to bring the sealant into contact with the wall of the well: in this case, we could even replace the sealant with a simple swelling product of the separation membrane; however, even if the separation membrane is designed to remain intact, accidental tears may occur due to localized differences in the thickness of the space to be sealed, generally very irregular, so it is preferable to use a cross-linking putty product to ensure in each case the perfect seal of the aforementioned space; - This crosslinking putty, which must not only be resistant to effluents, very aggressive, from the well (such as aromatic oils, etc.), but also to water which can have a very variable pH, for example between 2 and 12, as well as at the high temperatures and high pressures existing in the wells which can range, respectively, up to
  • sealants constituted by liquid elastomers, such as fluorinated silicones, polysulfides, polythioethers as well as epoxy or phenolic resins, in particular swellable; - the elastomers of which the separation and containment membranes are made (very deformable, like the separation membrane), which must also resist the same conditions of temperature, pressure and pH mentioned above for the sealant and which can be, for example for example, fluorinated elastomers (fluoro-carbon or fluoro-silicone) or acrylo-nitriles (or other saturated nitriles).
  • fluorinated silicones fluoro-carbon or fluoro-silicone
  • acrylo-nitriles or other saturated nitriles

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  • 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)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Transformer Cooling (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Disintegrating Or Milling (AREA)
  • Extraction Or Liquid Replacement (AREA)
EP89400163A 1988-01-20 1989-01-19 Vorrichtung und Verfahren zum Isolieren produzierender Schichten in einer Bohrung Expired - Lifetime EP0325541B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8800595A FR2626040B1 (fr) 1988-01-20 1988-01-20 Procede d'isolation entre zones de production d'un puits et dispositif de mise en oeuvre de ce procede
FR8800595 1988-01-20

Publications (2)

Publication Number Publication Date
EP0325541A1 true EP0325541A1 (de) 1989-07-26
EP0325541B1 EP0325541B1 (de) 1992-12-02

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EP89400163A Expired - Lifetime EP0325541B1 (de) 1988-01-20 1989-01-19 Vorrichtung und Verfahren zum Isolieren produzierender Schichten in einer Bohrung

Country Status (7)

Country Link
US (1) US4913232A (de)
EP (1) EP0325541B1 (de)
CA (1) CA1337043C (de)
DE (2) DE68903642T2 (de)
ES (1) ES2010495T3 (de)
FR (1) FR2626040B1 (de)
NO (1) NO890241L (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001090531A1 (en) 2000-05-22 2001-11-29 Shell Internationale Research Maatschappij B.V. Method for plugging a well with a resin
US7059415B2 (en) 2001-07-18 2006-06-13 Shell Oil Company Wellbore system with annular seal member
US7714181B2 (en) 2003-04-17 2010-05-11 Shell Oil Company Process to separate colour bodies and/or asphalthenic contaminants from a hydrocarbon mixture
RU2412332C2 (ru) * 2005-11-30 2011-02-20 Сальтель Индюстри Способ и устройство для цементирования скважины или трубопровода

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CA2181117A1 (en) * 1995-07-13 1997-01-14 Kenneth M. White Well completion device
FR2737533B1 (fr) * 1995-08-04 1997-10-24 Drillflex Manchon tubulaire gonflable pour tuber ou obturer un puits ou une canalisation
US5671809A (en) * 1996-01-25 1997-09-30 Texaco Inc. Method to achieve low cost zonal isolation in an open hole completion
US6446717B1 (en) * 2000-06-01 2002-09-10 Weatherford/Lamb, Inc. Core-containing sealing assembly
US6612372B1 (en) 2000-10-31 2003-09-02 Weatherford/Lamb, Inc. Two-stage downhole packer
FR2831597B1 (fr) * 2001-10-30 2004-02-13 Geoservices Dispositif de completion d'une installation d'exploitation de fluides souterrains
WO2003054345A1 (en) * 2001-12-12 2003-07-03 Weatherford/Lamb, Inc. Bi-directional and internal pressure trapping packing element system
US6769491B2 (en) 2002-06-07 2004-08-03 Weatherford/Lamb, Inc. Anchoring and sealing system for a downhole tool
US6854522B2 (en) * 2002-09-23 2005-02-15 Halliburton Energy Services, Inc. Annular isolators for expandable tubulars in wellbores
US6840325B2 (en) 2002-09-26 2005-01-11 Weatherford/Lamb, Inc. Expandable connection for use with a swelling elastomer
US6827150B2 (en) * 2002-10-09 2004-12-07 Weatherford/Lamb, Inc. High expansion packer
US6938698B2 (en) * 2002-11-18 2005-09-06 Baker Hughes Incorporated Shear activated inflation fluid system for inflatable packers
US6766858B2 (en) * 2002-12-04 2004-07-27 Halliburton Energy Services, Inc. Method for managing the production of a well
US6834725B2 (en) 2002-12-12 2004-12-28 Weatherford/Lamb, Inc. Reinforced swelling elastomer seal element on expandable tubular
US6907937B2 (en) * 2002-12-23 2005-06-21 Weatherford/Lamb, Inc. Expandable sealing apparatus
GB0303152D0 (en) * 2003-02-12 2003-03-19 Weatherford Lamb Seal
US6988557B2 (en) 2003-05-22 2006-01-24 Weatherford/Lamb, Inc. Self sealing expandable inflatable packers
GB2398582A (en) * 2003-02-20 2004-08-25 Schlumberger Holdings System and method for maintaining zonal isolation in a wellbore
BRPI0418531A (pt) * 2004-02-13 2007-05-15 Halliburton Energy Serv Inc aparelho e método para formar uma barreira anular entre a tubulação e um furo de sondagem, e, aparelho para um isolador anular entre tubulação e um furo de sondagem
US7063164B2 (en) * 2004-04-01 2006-06-20 Schlumberger Technology Corporation System and method to seal by bringing the wall of a wellbore into sealing contact with a tubing
GB0417328D0 (en) * 2004-08-04 2004-09-08 Read Well Services Ltd Apparatus and method
US7661471B2 (en) * 2005-12-01 2010-02-16 Baker Hughes Incorporated Self energized backup system for packer sealing elements
WO2009000322A1 (en) * 2007-06-25 2008-12-31 Vestas Wind Systems A/S A sealing device for a tubing arrangement
DK178243B1 (en) * 2008-03-06 2015-09-28 Mærsk Olie Og Gas As Fremgangsmåde til forsegling af en ringformet åbning i et borehul
DK178742B1 (da) 2008-03-06 2016-12-19 Maersk Olie & Gas Fremgangsmåde og apparat til injicering af et eller flere behandlingsfluider nede i et borehul
DK178489B1 (da) * 2008-03-13 2016-04-18 Maersk Olie & Gas Værktøj og fremgangsmåde til at aflukke åbninger eller lækager i en brøndboring
US8051913B2 (en) * 2009-02-24 2011-11-08 Baker Hughes Incorporated Downhole gap sealing element and method
US20100288512A1 (en) * 2009-03-16 2010-11-18 Baker Hughes Incorporated Rolling bridge through tubing bridge plug
US20120227969A1 (en) * 2009-11-19 2012-09-13 Ian Gray External Casing Packer
DK2466065T3 (da) * 2010-12-17 2013-05-27 Welltec As Brøndkomplettering

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US3578083A (en) * 1969-11-12 1971-05-11 Schlumberger Technology Corp Methods and apparatus for plugging well bores with hardenable fluent substances
FR2395389A1 (fr) * 1977-06-21 1979-01-19 Mazier Georges Obturateur dilatable haute pression a flexible arme
US4440226A (en) * 1982-12-08 1984-04-03 Suman Jr George O Well completion method

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US3224267A (en) * 1962-04-27 1965-12-21 Texaco Inc Well completion apparatus
US3542127A (en) * 1968-05-13 1970-11-24 Lynes Inc Reinforced inflatable packer with expansible back-up skirts for end portions
SU740935A1 (ru) * 1978-07-18 1980-06-15 Московский Ордена Трудового Красного Знамени Геологоразведочный Институт Им.С.Орджоникидзе Устройство дл цементировани скважин
US4484626A (en) * 1983-04-15 1984-11-27 K-V Associates, Inc. Pneumatic packer
US4655286A (en) * 1985-02-19 1987-04-07 Ctc Corporation Method for cementing casing or liners in an oil well
US4714117A (en) * 1987-04-20 1987-12-22 Atlantic Richfield Company Drainhole well completion

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Publication number Priority date Publication date Assignee Title
US3130787A (en) * 1960-09-12 1964-04-28 James C Mason Well bridging tool
US3578083A (en) * 1969-11-12 1971-05-11 Schlumberger Technology Corp Methods and apparatus for plugging well bores with hardenable fluent substances
FR2395389A1 (fr) * 1977-06-21 1979-01-19 Mazier Georges Obturateur dilatable haute pression a flexible arme
US4440226A (en) * 1982-12-08 1984-04-03 Suman Jr George O Well completion method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001090531A1 (en) 2000-05-22 2001-11-29 Shell Internationale Research Maatschappij B.V. Method for plugging a well with a resin
US6802375B2 (en) 2000-05-22 2004-10-12 Shell Oil Company Method for plugging a well with a resin
US7059415B2 (en) 2001-07-18 2006-06-13 Shell Oil Company Wellbore system with annular seal member
US7714181B2 (en) 2003-04-17 2010-05-11 Shell Oil Company Process to separate colour bodies and/or asphalthenic contaminants from a hydrocarbon mixture
RU2412332C2 (ru) * 2005-11-30 2011-02-20 Сальтель Индюстри Способ и устройство для цементирования скважины или трубопровода

Also Published As

Publication number Publication date
FR2626040B1 (fr) 1993-10-22
DE325541T1 (de) 1989-12-28
CA1337043C (fr) 1995-09-19
DE68903642T2 (de) 1993-04-08
ES2010495T3 (es) 1993-05-16
NO890241D0 (no) 1989-01-19
US4913232A (en) 1990-04-03
EP0325541B1 (de) 1992-12-02
DE68903642D1 (de) 1993-01-14
ES2010495A4 (es) 1989-11-16
FR2626040A1 (fr) 1989-07-21
NO890241L (no) 1989-07-21

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