EP0698136B1 - Schlauchartiger vorformling oder matrize für die auskleidung eines bohrlochs - Google Patents

Schlauchartiger vorformling oder matrize für die auskleidung eines bohrlochs Download PDF

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Publication number
EP0698136B1
EP0698136B1 EP94915185A EP94915185A EP0698136B1 EP 0698136 B1 EP0698136 B1 EP 0698136B1 EP 94915185 A EP94915185 A EP 94915185A EP 94915185 A EP94915185 A EP 94915185A EP 0698136 B1 EP0698136 B1 EP 0698136B1
Authority
EP
European Patent Office
Prior art keywords
preform
fact
matrix
assembly according
strands
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
Application number
EP94915185A
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English (en)
French (fr)
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EP0698136A1 (de
Inventor
Eric Bertet
Jean-Marie Gueguen
Jean-Louis Saltel
Frédéric SIGNORI
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Drillflex
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Drillflex
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Publication date
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Publication of EP0698136B1 publication Critical patent/EP0698136B1/de
Anticipated expiration legal-status Critical
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00—Cutting 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
    • E21B29/10—Reconditioning of well casings, e.g. straightening
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/06—Braid or lace serving particular purposes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B43/105—Expanding tools specially adapted therefor
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs

Definitions

  • the present invention relates to an assembly consisting of a preform tubular and of a recoverable matrix for the casing of a well, in particular a well of oil drilling.
  • casing a tube for consolidating a well
  • preform a structure tubular which is initially flexible and is then hardened to bind intimately and to remains against the wall of a well (thus constituting a casing)
  • matrix a flexible and recoverable structure used as a tool to dilate the preform and apply it against the wall of the well before it hardens.
  • production tubing refers to a tube coaxial with a casing, and smaller diameter, allowing the fluid produced by the well to be transported (water or oil especially).
  • the tubular preform in its folded form, has a lower radial section of about half of its developed radial section, which in most cases is sufficient, but may not be sufficient for some applications.
  • the objective of the present invention is to solve this problem by proposing a preform-matrix set whose structure presents a deformable geometry able to be applied to the walls of the tube hole (or casing to line) without however exceeding certain limits, this deformation being controlled and variable depending on the different applications.
  • Another objective of the invention is to propose an assembly whose preform has a significantly higher degree of expansion than those obtained with the devices known of the aforementioned genre, the expansion of the preform being done in two stages, all first by radial deployment, then by radial expansion.
  • the inflatable sleeve Admittedly, the inflatable sleeve is removable in the event of degradation, but the assembly does not operate in normal service without the sleeve; moreover, the structure tubular is not polymerizable and cannot be hardened to be intimately and remains against the wall of the well.
  • the assembly which is the subject of the present invention consists of a radially expandable tubular preform, and a recoverable matrix serving as a tool to expand the preform.
  • this braiding comprises two series wicks symmetrically intersecting on either side of the generators of the tubular structure, that is to say in relation to its longitudinal axis, the wicks of each series being parallel to each other.
  • each of the series of wicks forms an acute angle with the longitudinal axis which is between 10 ° and 30 °, and is preferably of the order of 20 °, when the structure is in its radially contracted state, while this angle is between 50 ° and 70 ° when the structure is in its radially expanded state.
  • the locks are flat, affecting the shape of ribbons.
  • the preform has several braided wick structures fitted coaxially one inside the other.
  • the preform is flexible enough to be able to be folded in on itself longitudinally when the structure is in its state radially contracted.
  • the preform or the matrix designated 1 in FIGS. 1 to 3 has a tubular shape provided with a braided structure. This is made up of an intertwining of two series of flat wicks, or ribbons 10a, 10b which are wound in a helix to form the envelope of the structure.
  • the two series are of opposite pitch, and the wicks are inclined at an acute angle u relative to the generatrix of the tube which it forms, which is cylindrical.
  • the axis XX ′ of the tube has been taken as a reference in FIGS. 1 to 3.
  • the two series of wicks 10a and 10b are intertwined like a cane, symmetrically with respect to the axis XX ', on either side of the latter.
  • the angle u is of the order of 20 ° ( Figures 1 and 1A).
  • Each of the locks 10 is formed from a plurality of fibers or of wires having a great mechanical resistance, and inextensible, joined the to each other. These are, for example, glass or carbon fibers having a diameter of a few micrometers, or steel wire.
  • the wicks 10 have a width included between 1 and 6 mm, and a thickness between 0.1 and 0.5 mm.
  • the material constituting the fibers or threads which form these wicks have a low coefficient of friction, favoring the mutual sliding of the intertwined locks, and consequently favoring the deformability of the structure.
  • the braiding of the two series strands 10a on the one hand and 10b on the other hand is made with a certain play, giving a loose assembly which spares 11-shaped spaces diamonds at the intersection of the two series 10a, 10b.
  • the preform or the matrix is represented in the configuration which gives it the greatest possible length L1.
  • the structure is self-locked, the different wicks being in support by their edges against each other.
  • the preform has a minimum diameter D1.
  • the braiding is determined so that this blocking takes place when the angle w formed by the locks relative to the axial direction of between 50 ° and 70 °.
  • the structure then has a minimum length L3 and a maximum diameter D3.
  • the braiding shown in FIGS. 1A to 3A is a braiding simple, in which a wick 10a alternately passes over and below a wick 10b, and vice versa. It goes without saying that others braiding modes can be considered, such as for example that shown in Figure 8. According to the latter, each wick 10a passes successively above and below two wicks 10b, and vice versa.
  • FIG. 4 shows a preform 1 capable of application industrial.
  • This includes several deformable tubular structures such as that which has just been described, in this case four structures 3a, 3b, 3c and 3d coaxial, and of increasingly smaller diameters, fitted into each other.
  • four structures 3a, 3b, 3c and 3d coaxial, and of increasingly smaller diameters, fitted into each other.
  • a higher number, per example of ten fitted structures can naturally be expected. They are confined between two skins made of elastic materials, for example elastomeric material one exterior 4 and the other interior 5. The role of the latter could be played by the wall of the matrix. They are impregnated with a fluid but curable medium, for example a resin thermosetting polymerizable hot, housed between the two skins 4 and 5.
  • a fluid but curable medium for example a resin thermosetting polymerizable hot
  • the deformability of skins 4 and 5 is chosen for be compatible with that of braided structures 3, the deformation of the whole being done jointly, and with the same amplitudes.
  • FIGS. 6A and 6B show two possible (non-limiting) modes of folding, respectively in the shape of a U and in the shape of a snail (spiral). Following such folding, it is therefore possible to give the preform a cross section having a very small footprint.
  • the preform By unfolding, the preform can be deployed, to give it the cylindrical shape shown in FIG. 7. Then, for example by applying an internal overpressure, it is possible to cause the radial expansion of the preform, by deformation of each of the concentric structures 3a , 3b, 3c and 3d by applying the phenomenon described above.
  • FIG. 9 represents a preform similar to that which comes to be described associated with a dilator tool intended to ensure its implementation place in a well, tool hereinafter called matrix.
  • Preform 1 shown in the unfolded state, but not expanded, includes - as already said - a medium 30 of thermosetting resin which occupies the annular space between two skins of elastic material one exterior 4 and the other interior 5 or 71 (of the sleeve 7). In this space are also located several deformable tubular structures and concentric formed by braided ribbons 3.
  • the matrix - referenced 6 - comprises a tubular sleeve 7 closed at its upper and lower ends by blanking plugs 60 respectively 61.
  • the upper plug 60 is crossed by a tube 8 which has openings 80 opening, like its free end, to inside the sleeve 7.
  • This liquid can be brought in from the surface.
  • the wall of the sleeve consists of two membranes elastic, for example of elastomeric material, the inner 72 and the other exterior 71. Between the two membranes is a structure tubular with braided wicks as described above, referenced 70. In a variant, several concentric structures can be provided, fitted into each other as is the case for the preform.
  • the length of the sleeve 7 is greater than that of the preform 1. End caps 60, 61 are fixed, for example by bonding, in the end zones of the inner membrane 72.
  • the sleeve 7 is fixed, by its external membrane 71, to the preform 1, by means of end sleeves 73, 74. These have rupture zones 730 and 740 respectively.
  • the cuffs 73 and 74 form seals between the preform and the sleeve 7 constituting the matrix 6.
  • the interface between the outer membrane 71 of the sleeve and the inner skin 5 of the preform is treated, for example by coating with silicone, so that there is little adhesion between these two elements.
  • the inner skin can be deleted.
  • the outer face of the outer skin 4 of the preform has pads 40.
  • pads 40 are for example annular bulges separated by cavities also annular 41. The function of these pads is to promote sealing with the wall of the well, and to keep a prestress and some flexibility after hardening.
  • Figure 10 and following illustrate the casing operation of an oil well through a production tubing by means of preform 1 and using the matrix which have just been described.
  • the inside diameter of tubing 9 is 60 mm while the average diameter of the well is of the order of 180 mm.
  • the preform is introduced by being folded back on itself, for example by snail (see Figure 6B) in such a way that the largest dimension of its cross section is less than the inside diameter of the tubing 9. This larger dimension is for example of the order of 55 mm.
  • the preform is therefore lowered, at the same time as the tube 8, to the level desired inside the well.
  • the preform is therefore applied intimately against the wall P of the well.
  • the degree of expansion is done as needed, that is to say according to the roughness of the wall. This is an essential difference compared to the known flexible preform device, the radial expansion of which can only take place according to a well-defined diameter.
  • the preform therefore adapts to the configuration of wells it encounters. This is further favored by the presence of the pads 40, which provide anchoring and sealing.
  • the wall of the preform is then allowed to harden, introducing and circulating a hot fluid (and under pressure) in the sleeve 7.
  • a hot fluid and under pressure
  • the fluid is aspirated contained in the sleeve, which causes its radial retraction, as shown in Figure 10C.
  • the sleeve 7 lengthens by retracting radially, and it is possible to extract it through tube 9.
  • the old preform 1, hardened, constitutes a casing element of Wells.
  • Such tubing can be used with or without cement, in depending on the soil conditions encountered.
  • the extraction mode illustrated in Figure 11 does not require applying a vacuum inside the matrix.
  • the reference 7a designates the portion of the matrix already constricted, and detached from the casing, whose strands of structure form the angle u .
  • the reference 7b designates the expanded portion, the wicks of which form the angle w .
  • Figures 12 and 12A show a dilation of the matrix 7 and preform 1 which is done gradually, from the bottom to the top, an inflation liquid being introduced, via the conduit 8, to the part bottom of the matrix.
  • Inflation progression can be obtained by example by enclosing the preform and the matrix (in the folded state) in a envelope suitable for tearing longitudinally and from bottom to top.
  • braided deformable structure conforms to the invention can be implemented with preforms, the implementation of which instead would not use inflation dies using such structure, and vice versa.
  • certain fibers of at least some of the locks are replaced by electrically conductive wires, allowing the preform to be heated or the matrix, for the polymerization of the preform, when they are connected to a current source.

Claims (12)

  1. Zusammenbau aus einem schlauchartigen radial dehnbaren Vorformling (1) für die Auskleidung eines Bohrlochs und einer als Werkzeug dienenden wiederverwendbaren Matrize (6), um diesen Vorformling zu dehnen,
    dadurch gekennzeichnet, daß
    a) dieser Vorformling eine Wandung aus einem Verbundwerkstoff besitzt, welcher aus einem fluiden härtbaren Harz (30) besteht, das zum Beispiel warm polymerisiert werden kann und zwischen einer Innenhaut oder inneren Membran (5; 71) und einer Außenhaut (4) angeordnet ist, welche beide aus einem elastischen Material hergestellt sind, und in deren Inneres eine schlauchartige Struktur eingebettet ist, welche mindestens ein Geflecht (10) aus flexiblen aus Fasern bestehenden verwebten Maschen aufweist, die es ihr ermöglicht sich radial zu dehnen und sich gleichzeitig in axialer Richtung unter der Wirkung eines Überdruckes im Inneren des Vorformlings (1) zusammenzuziehen;
    b) die anfänglich mit dem Vorformling (1) verbundene Matrize (6) innerhalb des Vorformlings (1) eine aufblasbare Manschette (7) enthält, in die ein bedrücktes Fluid so eingefüllt werden kann, daß es radial an der inneren Wandung des Vorformlings (1) zur Anlage kommt und dadurch die radiale Dehnung sowohl der Manschette (7) als auch des Vorformlings (1) erreicht wird, und daß diese Matrize nach Beendigung der Arbeiten nach der Aushärtung des Vorformlings herausgezogen werden kann.
  2. Zusammenbau nach Anspruch 1,
    dadurch gekennzeichnet, daß
    die Struktur des Vorformlings (1) aus einem Geflecht (10) aus flexiblen Maschen besteht, welche aus Fasern (100) hergestellt sind, und daß es zwei Reihen aus Maschen (10a, 10b) enthält, welche symmetrisch gegenüber der Längsachse (XX') der schlauchartigen Struktur gekreuzt sind, und daß die Maschen der jeweiligen Reihen parallel zueinander angeordnet sind.
  3. Zusammenbau nach Anspruch 2,
    dadurch gekennzeichnet, daß
    wenn sich die Struktur des Vorformlings in dem radial zusammengezogenen Zustand befindet, jede der Reihen aus Maschen (10a, 10b) einen spitzen Winkel (u) bildet, der zwischen 10° und 30° und vorzugsweise im Bereich von 20° gegenüber der Längsachse (XX') liegt.
  4. Zusammenbau nach einem der Ansprüche 2 oder 3,
    dadurch gekennzeichnet, daß
    wenn sich die Struktur des Vorformlings in ihrem anfänglich geweiteten Zustand befindet, jede der Reihen aus Maschen (10a, 10b) einen spitzen Winkel (w) bildet, welcher gegenüber der Längsachse (XX') in einem Bereich von 50° und 70° liegt.
  5. Zusammenbau nach einem der Ansprüche 2 bis 4,
    dadurch gekennzeichnet, daß
    die Maschen (10, 70) flach sind und in Form von Bändern angeordnet sind.
  6. Zusammenbau nach einem der Ansprüche 2 bis 5,
    dadurch gekennzeichnet, daß
    der Vorformling (1) mehrere Strukturen aus geflochtenen Maschen aufweist, welche koaxial miteinander verwoben sind.
  7. Zusammenbau nach einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet, daß
    der Vorformling (1) ausreichend elastisch ist, um in seiner Längsrichtung zusammengelegt werden zu können, wenn er sich in seinem anfänglich zusammengezogenen Zustand befindet.
  8. Zusammenbau nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet, daß
    die Außenhaut (4) des Vorformlings (1) mit Reliefs (40) versehen ist.
  9. Zusammenbau nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet, daß
    die aufblasbare Manschette (7) mit einem Rohr (8) für das Einfüllen eines Fluids in die Manschette ausgestattet ist.
  10. Zusammenbau nach einem der Ansprüche 1 bis 9,
    dadurch gekennzeichnet, daß
    die Matrize (6) an dem Vorformling (1) mittels teilbarer Verbindungselemente (73, 74) befestigt ist.
  11. Zusammenbau nach einem der Ansprüche 1 bis 10,
    dadurch gekennzeichnet, daß
    die Manschette (7) ebenfalls eine schlauchartige Struktur besitzt, welche aus gekreuzten flexiblen Maschen (70) besteht.
  12. Zusammenbau nach Anspruch 11,
    dadurch gekennzeichnet, daß
    bestimmte Maschen (70) der Manschette (7) durch elektrisch leitende Drähte ersetzt werden, welche die Erwärmung des Vorformlings im Hinblick auf seine Polymersierung ermöglichen, wenn diese Drähte an eine Stromquelle angeschlossen werden.
EP94915185A 1993-05-03 1994-04-28 Schlauchartiger vorformling oder matrize für die auskleidung eines bohrlochs Expired - Lifetime EP0698136B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9305416 1993-05-03
FR9305416A FR2704898B1 (fr) 1993-05-03 1993-05-03 Structure tubulaire de preforme ou de matrice pour le tubage d'un puits.
PCT/FR1994/000484 WO1994025655A1 (fr) 1993-05-03 1994-04-28 Structure tubulaire de preforme ou de matrice pour le tubage d'un puits

Publications (2)

Publication Number Publication Date
EP0698136A1 EP0698136A1 (de) 1996-02-28
EP0698136B1 true EP0698136B1 (de) 1998-08-05

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Application Number Title Priority Date Filing Date
EP94915185A Expired - Lifetime EP0698136B1 (de) 1993-05-03 1994-04-28 Schlauchartiger vorformling oder matrize für die auskleidung eines bohrlochs

Country Status (10)

Country Link
US (1) US5695008A (de)
EP (1) EP0698136B1 (de)
JP (1) JP3446207B2 (de)
CN (1) CN1046976C (de)
AU (1) AU673261B2 (de)
DE (1) DE69412252T2 (de)
FR (1) FR2704898B1 (de)
NO (1) NO310577B1 (de)
RU (1) RU2123571C1 (de)
WO (1) WO1994025655A1 (de)

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JPH08509532A (ja) 1996-10-08
RU2123571C1 (ru) 1998-12-20
NO310577B1 (no) 2001-07-23
US5695008A (en) 1997-12-09
JP3446207B2 (ja) 2003-09-16
NO954299D0 (no) 1995-10-27
DE69412252D1 (de) 1998-09-10
NO954299L (no) 1995-12-07
AU6660194A (en) 1994-11-21
FR2704898A1 (fr) 1994-11-10
FR2704898B1 (fr) 1995-08-04
AU673261B2 (en) 1996-10-31
CN1046976C (zh) 1999-12-01
DE69412252T2 (de) 1999-05-06
WO1994025655A1 (fr) 1994-11-10
CN1122619A (zh) 1996-05-15
EP0698136A1 (de) 1996-02-28

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