WO2009047536A1 - Produit tubulaire de fond de trou - Google Patents

Produit tubulaire de fond de trou Download PDF

Info

Publication number
WO2009047536A1
WO2009047536A1 PCT/GB2008/003458 GB2008003458W WO2009047536A1 WO 2009047536 A1 WO2009047536 A1 WO 2009047536A1 GB 2008003458 W GB2008003458 W GB 2008003458W WO 2009047536 A1 WO2009047536 A1 WO 2009047536A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubular
recess
mould
protrusions
protrusion
Prior art date
Application number
PCT/GB2008/003458
Other languages
English (en)
Inventor
Glenn Lively
David E. Y. Levie
Richard Ronald Baynham
Original Assignee
Protech Centreform International Limited
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 Protech Centreform International Limited filed Critical Protech Centreform International Limited
Publication of WO2009047536A1 publication Critical patent/WO2009047536A1/fr

Links

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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1042—Elastomer protector or centering means
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes

Definitions

  • This invention relates to tubular products of the type required by the oil and gas industry for use in recovery of and transporting of crude oil or gas, namely oil- country-tubular goods (OCTG) 1 particularly a tubular product adapted to be inserted downhole in a centralised position.
  • OCTG oil- country-tubular goods
  • the clearance between casing and hole can vary from values of about 6-7 inches (15-16 cm) for the surface and/or intermediate phases, up to values close to an inch (1 inch is equivalent to 2.54 cm) for the deeper phases (for example: 26" hole for a 20" conductor pipe; 17V 2 " hole for a 13 3 / 8 " casing; 12 1 / 4 " hole for a 9 5 / ⁇ " casing; 8V2" hole for a 7" casing).
  • a typical centraliser takes the form of an open-ended substantially cylindrical hollow body to be attached as a close-fitting sleeve or collar around a tubular.
  • the body is provided with radially projecting parts such as ribbing or spaced apart blades so that fluid pathways are defined between the projecting parts permitting fluids to pass around the centraliser when it is located in the bore.
  • the projecting parts provide lands for engagement of downhole surfaces to provide a means of making the tubular stand-off to its intended centralised position.
  • the design of the projecting parts varies from axially aligned "vertical” blades through off-set-straight to helical or “spiral” patterns, and continuous or interrupted (slotted) blade designs often with bevelled ends.
  • the lands may be so designed that in situ downhole they are used to divert the tubular to follow a deviation in bore path, and so design specification for one centraliser may also differ in this respect from that of another centraliser.
  • centralisers Whilst numerous types of centralisers are known, the common purpose for a typical centraliser is that it is intended to be located on a tubular body such as casing, liner, pipe, or similar conduit, or a tool to be installed in a bore hole, and is retained in a desired axial position on the tubular by fasteners, stop collars, welding, cementing, or by use of adhesive or simply frictional engagement over the tubular.
  • the known centralisers are in the main made from metal, such as aluminium, steel, and zinc, typically nowadays by casting methods but possibly by extrusion, and recently special alloys have become popular for special purposes, e. g. zinc alloys and bronze alloys.
  • centralisers made of, or including plastics, e.g. durable plastic resins such as NYLON, and TEFLON. Use of special materials for the surfaces of the lands has been proposed, including zirconia, titania, alumina and metal carbides.
  • British patent publications in this field include: GB-A-2 016 063, GB-A-2 148 984, GB-A-2 148 985, GB-A-2 155 519, GB-A-2 171 436, GB-A-2 197008, GBA-2 201 176, GB-A-2 210 084, GB-A-2 210 085, GB-A-2 230808, GB- A-2 241 009, GB-A-2242457, GB-A-2 249333, GB-A-2 252 118, GB-A-2 253 428, GB-A-2 272 233, GB-A-2 277 336, GB-A-2 282615, GB-A-2 285 649, GB-A-2290331 , GB-A- 2 304753, GB-A-2 316422, GB-A-2331 534, GB--
  • a significant improvement in the placement of tubulars downhole is described in GB-A-2 396 877, and WO 2004015 238, each of which is hereby incorporated by reference.
  • a tubular is prepared for use downhole by a method whereby at least one stand-off projection, such as a blade of a predetermined form is provided on a tubular body, by providing materials capable of being moulded, applying a mould to the tubular, and moulding said materials using said mould onto said tubular.
  • An advantage of that method is that it is thereby possible to provide whatever contours of shape or configuration are required for a centraliser by simply designing an appropriate mould cavity for the desired projecting stand-off parts.
  • a tubular body with an integral centraliser may be formed by providing a resin-ceramic composite material e.g. as powders, particles, fibrils, chopped fibres, beads or the like mouldable particulates, optionally including fillers or other moulding auxiliaries, and means for curing or setting the resin into a moulded form.
  • a resin-ceramic composite material e.g. as powders, particles, fibrils, chopped fibres, beads or the like mouldable particulates, optionally including fillers or other moulding auxiliaries, and means for curing or setting the resin into a moulded form.
  • the resin material may include bonding agents such as an adhesive or the like curable component, whilst other components to be mixed therewith, whenever moulding is to be carried out may include a hardener, accelerator or curing initiator.
  • the resin-ceramic composite material may also include a catalyst to initiate curing of the resin-ceramic composite.
  • the catalyst may be thermally activated.
  • the mixed materials may be chemically activated by a curing initiator.
  • a tubular of the type contemplated in GB 2 396 877 may have a plurality of protrusions formed from a ceramic carbon fibre composite bonded to the tubular in order to facilitate the placement of the tubular in a borehole, or within another tubular.
  • the protrusion-modified tubular can also be used in horizontal or deviated boreholes.
  • protrusions One of the primary functions of these protrusions is to provide stand-off or centralisation of the tubular to which they are bonded in use when positioned downhole. In some cases, due to previous constrictions, or other reasons, it is not possible to provide protrusions such as centraliser blades of sufficient height to centralise the tubular to a desired or sufficient level in the final placement location due to unavoidable variations in borehole diameter (oversize - undersize).
  • tubing or casing tubulars into the well bore to act as a lining or seal.
  • the casing is typically run into the well bore from the surface and the length of casing is often referred to as a "casing string".
  • the lining of the bore can then be strengthened by introducing cement between the external surface of the casing and the internal surface of the well bore. It is common for the casing to meet obstructions as it is run through the well bore. These may be ledges which form in the well bore material during drilling, formation washouts, or debris formed by unstable sections of the well bore wall collapsing.
  • An object of the present invention is to provide a way of centralising a tubular in a borehole of variable diameter, and to provide a modified tubular that enables appropriate downhole placement of the tubular.
  • a way of realising this object is to provide a latent surface-forming material or composition suitably confined and retained upon the tubular before placement thereof downhole.
  • the latent material or composition is activated when the tubular is placed downhole, e.g. by contact with fluids, to form an expanded surface whereby appropriate centring or stand-off of the tubular is achievable by contact of the expanded surface upon a surface of the borehole.
  • a tubular having a latent surface-forming material or composition retained upon the tubular in an open-faced protrusion or socket, said material or composition being capable of forming an emergent expanded surface under predetermined conditions.
  • the latent surface-forming material or composition extends outwardly in a radial direction to form a surface that in use serves as a means for centring the tubular when the surface contacts the borehole surface.
  • the protrusion is extended outwardly only to provide a variable "reach” determined by the variation in the borehole surface towards which the expandable material extends and contacts.
  • the material may be an elastomer that swells when exposed to certain predetermined conditions. The predetermined conditions may require contact with a fluid that can be circulated to the site of placement of the tubular.
  • the tubular may have a plurality of ceramic protrusions bonded thereto, at least one, or selected ones, of said protrusions forming a socket or recess for insertion of an appropriate material or composition that is capable of developing an expanded surface which projects beyond the said protrusion.
  • a suitable protrusion may have an elongate form generally aligned with the longitudinal axis of a tubular, or optionally offset at an angle thereto.
  • a protrusion is formed to provide an open access blind recess, or socket, within the protrusion.
  • the protrusion provides retaining means by way of side walls and a base surface against which a suitable material insert or composition may be positioned, and at least partially exposed for subsequent activation and expansion outwardly away from the base surface to develop an expanded projection.
  • the recess may be a single slot recess, or a plurality of recesses within the protrusion.
  • a plurality of such protrusions and expandable inserts are contemplated for normal purposes in placement of a tubular in vertical, horizontal or deviated boreholes.
  • a wide range of commercially available elastomer materials exist. Many of those will provide a swellable elastomer composition or rubber-like material to form a suitable insert. This material is known to have a swelling capacity of perhaps 200%-300%, or significantly higher, yet retain flexibility and durability in situ, and is typically "activated" by contact with aqueous circulation fluids or hydrocarbon based fluids. The selection of the circulation fluid represents another degree of control over swelling since the swelling of the elastomer can be varied by selecting a different activating fluid.
  • a method for manufacturing a tubular having latent positioning capability with respect to placement downhole comprising providing at least one protrusion on a tubular body, said protrusion having a predetermined form such as a blade, ribbing, or the like stand-off projection, by providing materials capable of being moulded, applying a mould to a tubular body, and moulding said materials into a moulded form using said mould onto said tubular body, characterised in that the mould provides for forming a recess within the moulded form, and that the so-formed recess is provided with an expandable insert that is adapted to expand beyond the recess under predetermined conditions.
  • the insert may be retained within the recess by any appropriate method compatible with the materials formed in the moulding process, i.e. the insert may be glued, bonded or vulcanised into the recess.
  • a suitable moulding composition comprising composite resin materials loaded with hard particles is typically introduced into the mould cavities directly against the tubular wall, and the moulding operation is carried out to cure the moulding composition.
  • the moulding composition in this case typically comprises a curable resin, ceramic particulate filler materials, including optional chopped carbon fibre materials.
  • the commercially available PROGUARD CRB can be considered suitable for this purpose.
  • the moulded form has an open accessible blind recess, or socket with side wall and a base which may be a surface of the tubular to which an expandable insert material can be fixed.
  • the insert is confined on all sides except one corresponding to the open access to the recess, and facing away from the surface of the tubular from which the protrusion projects.
  • the method comprises providing composite resin materials loaded with hard particles, and applying the materials directly to an exterior surface portion of a tubular body by means of a mould, and curing the resin materials to provide at least one projection of a predetermined size and shape conforming to the design of the mould pattern, the mould form producing a void space in the form of an open slot recess (or a plurality of such slots), having side walls and a base which may be a surface of the tubular or an applied resin surface.
  • An advantage of ensuring that the side walls and base are formed of the composite resin material is that when fixing the insert into the slot recess the insert can be fixed on sides and base by the same means, such as gluing, bonding or vulcanising.
  • the expanded insert in use will be under compression, and so the degree of bonding for the material is only that sufficient to retain the insert in preparation for run in, and it is not essential that the bonding is perfect against all areas, i.e. base and side wall, within the recess.
  • the moulding operation may comprise applying an appropriately contoured moulding part to a tubular body, loading the mould with resin- ceramic materials in predetermined amounts to form the desired composite, suitably by injecting the materials into the mould, curing the materials in the mould, and removing the mould parts to leave the desired moulded part formed on the tubular body.
  • the selective positioning of the mould permits selective location of standoff parts on the tubular, and it is thereby possible to contemplate infinite variations for design of tubulars having integral centralising or standoff structures.
  • Blades extending radially with respect to the longitudinal axis of a tubular for example, may be provided at circumferentially mutually spaced positions uniformly around a tubular such that they are all generally within a discrete cylindrical centralising zone defined around the tubular.
  • the stand-off parts formed by moulding may be in staggered positions, for example, forming upon the tubular off-set or spiral arrangements of centralising or stand-off structures.
  • the composite forming materials may be appropriately mixed by use of a pre-calibrated mixing and dosing equipment.
  • the prefabricated tubular with integral moulded centraliser features obtainable according to the invention may be further treated after removal of the mould parts, e.g. by coating with resins, paints, or bonding of land surface finishing agents thereto.
  • the insert that is capable of expanding under predetermined conditions when the tubular is placed downhole is protected within the recess during the run in trip into the borehole.
  • the expandable insert can be activated e.g. by circulating a selected fluid around the annulus about the tubular, whereby the insert interacts with the fluid to deploy by expansion to emerge beyond the recess to fill out as an extension to the blade, rib or like protrusion and thereby position the tubular appropriately by contact with the borehole side surface.
  • the invention enables realisation of a prefabricated tubular with localised latent expansion properties to be provided for subsequent placement in the field, said prefabricated tubular being characterised by integral centraliser formations of variable radial extent, said formations being formed as protrusions moulded directly onto the tubular body and having expandable inserts capable of extending outwardly under predetermined conditions to vary the radial reach of said protrusions.
  • Fig. 1 is a side elevation and schematic representation of a longitudinal section through a tubular to which an expandable insert within a moulded blade has been assembled and bonded;
  • Fig. 2 is a plan view and schematic illustration of the tubular of Fig. 1 ;
  • Fig. 3 is cross-section through a tubular such as that of Fig.1 illustrating the protected position of the insert within the moulded blade;
  • Fig. 4 is a side view of a tubular bearing a plurality of centraliser blades of the type shown in Figs. 1 to 3 according to one possible embodiment (spiral design);
  • Fig. 5 is a side elevation of a tubular as in Fig. 1 , illustrating schematically the deployment of the expandable insert beyond the extremity of the blade;
  • Fig. 6 is cross-section through a tubular such as that of Fig.1 illustrating the expanded extent of the insert after activation.
  • a prefabricated tubular having appropriate integral centralising capability is formed in the following way.
  • An OCTG tubular e. g. a pipe 1 is prepared for application of centraliser parts by cleaning to remove possibly interfering contamination such as paint, grease, oil, dust etc.
  • a mould (not shown) having for forming projecting parts, e. g. radially extending blade(s) 2, is presented around the tubular at a suitable axial position and fastened directly against the exterior curved surface of the tubular to provide a tight fit sufficient to permit a successful moulding operation.
  • the mould is configured to form a recess in the blade for receiving an expandable insert 3.
  • a moulding composition comprising composite resin materials loaded with hard particles is introduced into the mould cavities directly against the tubular wall, and the moulding operation is carried out to cure the moulding composition.
  • the moulding composition in this case comprises a curable resin, ceramic particulate filler materials, including optional chopped carbon fibre materials.
  • the commercially available PROGUARO CRB can be considered suitable for this purpose.
  • the composite material here is provided pre-moulding as separate two- part raw material components for admixing for moulding whereby the whole can be reacted. The reaction may be catalytically controlled such that the various components in the separated two parts of the composite material will not react until they are brought together under suitable moulding conditions.
  • the one part may include an activator, or initiator, or catalytic component required to promote, initiate or facilitate the reaction between the whole mixed composition.
  • an activator, or initiator, or catalytic component required to promote, initiate or facilitate the reaction between the whole mixed composition.
  • the appropriate balance of components can be achieved in the mould by use of pre-calibrated mixing and dosing equipment.
  • the properly mixed and dosed composition cures rapidly in the mould which can then be released from around the tubular, leaving a pre-formed centraliser bonded or fused to the outer surface of the tubular.
  • the insert to be fixed into the open access blind recess is formed of an elastomer material that upon contact with an aqueous circulation fluid or a hydrocarbon fluid expands significantly, for example by 200-300% of its original volume.
  • the insert In use the pre-fabricated tubular with expandable integral centraliser protrusions is run in as normal and upon circulation of the selected activation fluid, the insert swells to provide a surface that emerges radially to extend from the protrusions, contact the borehole side surface and appropriately position the tubular to leave an appropriate annulus, for example for cementing purposes.
  • the protrusions act as protection for the latent swellable insert on run in, and the tubular is more easily run into a variable diameter borehole.
  • this method it is possible by this method to run in a tubular through a restricting diameter less than that of the intended final placing.
  • an activating fluid that is known to cause swelling of the insert is brought into contact with the insert, e.g. by a circulation pump, the insert swells and emerges to urge the tubular into the correct position.
  • This localised positioning by means of a discretely located latent insert protected within a moulded protrusion on the tubular, and selective activation thereof only after run in to placement zone, provides a unique placement method with advantages for installation yet retains full access to the required annulus around the bulk of the tubular, for circulation of fluids and cementing in operations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)

Abstract

L'invention concerne un produit tubulaire préfabriqué qui est apte à trouver sa propre position à l'intérieur d'un puits de forage par la disposition de matériaux composites durcis résine-céramique moulés sous la forme de protubérances d'écartement sur le produit tubulaire, des protubérances sélectionnées comprenant une cavité, et, dans ladite cavité, étant disposée une composition expansible apte à étendre une surface d'écartement à partir de la protubérance lorsqu'un fluide d'activation vient au contact de celle-ci.
PCT/GB2008/003458 2007-10-12 2008-10-10 Produit tubulaire de fond de trou WO2009047536A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0719973.0 2007-10-12
GB0719973A GB0719973D0 (en) 2007-10-12 2007-10-12 Downhole assembly

Publications (1)

Publication Number Publication Date
WO2009047536A1 true WO2009047536A1 (fr) 2009-04-16

Family

ID=38788075

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/003458 WO2009047536A1 (fr) 2007-10-12 2008-10-10 Produit tubulaire de fond de trou

Country Status (2)

Country Link
GB (1) GB0719973D0 (fr)
WO (1) WO2009047536A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015022381A3 (fr) * 2013-08-13 2015-06-04 Advanced Composite Industries Ag Centreur
WO2020139911A1 (fr) * 2018-12-28 2020-07-02 Saudi Arabian Oil Company Systèmes et procédés pour une centralisation améliorée et une réduction de frottement à l'aide de tiges de tubage

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269377A (en) * 1992-11-25 1993-12-14 Baker Hughes Incorporated Coil tubing supported electrical submersible pump
US6513223B1 (en) * 2000-05-30 2003-02-04 Tesco Corporation Method for installing a centralizer retaining collar and outer sleeve
GB2381284B (en) * 2000-06-30 2006-01-04 Brunel Oilfield Services Non-conductive centraliser
GB2396877B (en) * 2002-08-12 2006-04-19 Eni Spa Integral centraliser
WO2006053896A1 (fr) * 2004-11-18 2006-05-26 Shell Internationale Research Maatschappij B.V. Procede de scellement d'un espace annulaire dans un puits
US20070007015A1 (en) * 2005-07-05 2007-01-11 Thomas John Thornton Centraliser
EP1793078A1 (fr) * 2005-12-05 2007-06-06 Services Petroliers Schlumberger Procédé et dispositif pour la construction de puits

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269377A (en) * 1992-11-25 1993-12-14 Baker Hughes Incorporated Coil tubing supported electrical submersible pump
US6513223B1 (en) * 2000-05-30 2003-02-04 Tesco Corporation Method for installing a centralizer retaining collar and outer sleeve
GB2381284B (en) * 2000-06-30 2006-01-04 Brunel Oilfield Services Non-conductive centraliser
GB2396877B (en) * 2002-08-12 2006-04-19 Eni Spa Integral centraliser
WO2006053896A1 (fr) * 2004-11-18 2006-05-26 Shell Internationale Research Maatschappij B.V. Procede de scellement d'un espace annulaire dans un puits
US20070007015A1 (en) * 2005-07-05 2007-01-11 Thomas John Thornton Centraliser
EP1793078A1 (fr) * 2005-12-05 2007-06-06 Services Petroliers Schlumberger Procédé et dispositif pour la construction de puits

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015022381A3 (fr) * 2013-08-13 2015-06-04 Advanced Composite Industries Ag Centreur
US10113373B2 (en) 2013-08-13 2018-10-30 Innovex Downhole Solutions, Inc. Centraliser
WO2020139911A1 (fr) * 2018-12-28 2020-07-02 Saudi Arabian Oil Company Systèmes et procédés pour une centralisation améliorée et une réduction de frottement à l'aide de tiges de tubage
US10895117B2 (en) 2018-12-28 2021-01-19 Saudi Arabian Oil Company Systems and methods for improved centralization and friction reduction using casing rods

Also Published As

Publication number Publication date
GB0719973D0 (en) 2007-11-21

Similar Documents

Publication Publication Date Title
AU2010319949B2 (en) Non-rotating casing centralizer
US20130081802A1 (en) Integral centraliser
CA2668677C (fr) Appareil de foration descendante et procede
CA2486279C (fr) Systemes amortisseurs de vibrations pour sondage avec tubage
CA2950164C (fr) Centreur en une seule piece
EP1485567B1 (fr) Tubage de puits a diametre unique
US7448445B2 (en) Downhole tools having a seal ring with reinforcing element
EP2545246B1 (fr) Ensemble joint d'étanchéité et procédé de formation d'un ensemble joint d'étanchéité
US6533034B1 (en) Centralized stop collar for floating centralizer
WO2011025488A1 (fr) Sabot de tubage
CA2438807C (fr) Cuvelage pour puits de forage a un seul diametre
WO2019168621A1 (fr) Élément d'étanchéité amélioré
WO2008062177A1 (fr) Appareil de foration descendante et procédé
AU2001283026B2 (en) Liner hanger with standoffs
WO2009047536A1 (fr) Produit tubulaire de fond de trou
AU2002240366A1 (en) Mono-diameter wellbore casing
GB2403970A (en) Mono - diameter wellbore casing
EP3239455B1 (fr) Garniture d'étanchéité gonflante entièrement liée
CA1324573C (fr) Appareil servant a la mise en place d'une garniture en ciment dans un sondage et methode connexe
GB2430952A (en) Method of forming a centraliser

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08806588

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08806588

Country of ref document: EP

Kind code of ref document: A1