EP2503095B1 - Procédé de réparation in situ d'une bride de base d'une tête de puits. - Google Patents

Procédé de réparation in situ d'une bride de base d'une tête de puits. Download PDF

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Publication number
EP2503095B1
EP2503095B1 EP12159302.4A EP12159302A EP2503095B1 EP 2503095 B1 EP2503095 B1 EP 2503095B1 EP 12159302 A EP12159302 A EP 12159302A EP 2503095 B1 EP2503095 B1 EP 2503095B1
Authority
EP
European Patent Office
Prior art keywords
lip
composite material
layer
applying
flange
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.)
Active
Application number
EP12159302.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2503095A1 (fr
Inventor
Denis Devilleger
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.)
Storengy SAS
Original Assignee
Storengy SAS
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 Storengy SAS filed Critical Storengy SAS
Priority to PL12159302T priority Critical patent/PL2503095T3/pl
Publication of EP2503095A1 publication Critical patent/EP2503095A1/fr
Application granted granted Critical
Publication of EP2503095B1 publication Critical patent/EP2503095B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • 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
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/04—Casing heads; Suspending casings or tubings in well heads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble

Definitions

  • the present invention relates to a method of in situ repair of a base flange of a wellhead and an arrangement for in situ repair of such a flange.
  • the base flange of a wellhead is the jointing and sealing element between a casing that comes from the bottom of the well and a surface installation from which connecting ducts carry what is produced by the well, for example oil, gas or water, to a distribution network.
  • the document FR 2, 520, 829 A1 discloses a method of in situ repair of a base flange of a wellhead.
  • the base flange which is installed at the construction of the well, can suffer, over time, degradations, including corrosion, resulting in leaks.
  • the well When it comes to reconditioning the base flange, the well must be shut down, purged and disassembled at the wellhead in order to restore the base flange and adjacent elements, including the tube on which the wellhead is mounted, or, where appropriate, install new parts.
  • the object of the invention is to propose a solution to this problem.
  • the object of the invention is also achieved with an arrangement for in situ repair of a base flange of a wellhead, which comprises at least one layer of a polymerized composite material applied on the damaged surfaces and previously stripped respectively of the base flange and an adjacent piece such as the tube on which the wellhead is mounted, an elastic seal intended to be placed on the composite material previously applied when the latter is polymerized, at the junction between the base flange and the adjacent piece, and a reinforcing collar shaped to press the seal on the damaged surface.
  • This arrangement may also comprise, when the base flange is placed on a casing having a double wall below the flange, the space between the two walls being filled for example with cement, an annular foam ring on the cement filling and an epoxy resin crown cast on the coil so that it has an upper surface sloping outwardly of the casing.
  • the repair of the base flange of a well is carried out in situ, that is to say without dismounting the wellhead.
  • the well remains operational.
  • the damage to be repaired is generally below the base flange, more particularly at the connection between the base flange and the casing on which the wellhead is engaged, the repair consists of removing corrosion, protecting the cleaned surfaces with a suitable coating and applying a polymer resin or other suitable polymerizable composite material to protect the flange from access to vapors or corrosive liquids.
  • FIG. 1 The design of a well to which the repair method according to the invention applies is visible on the figure 1 .
  • a well head 1 is fixed on a production duct or casing 2 coming from the bottom of the well by a base flange 3.
  • the flange 3 comprises a lower surface 31 on which, by tightening, the heads 33 of screws 32 are supported by which flange 3 is attached to the wellhead 1.
  • the lower surface 31 may be at right angles, as in the accompanying drawings, but also at an obtuse angle of up to about 160 °.
  • a gas well may be provided with a triple casing 2 comprising a gas production tube 21, an intermediate tube 22 on which is screwed the base flange 3 and an outer tube 23.
  • This triple casing 2 constitutes two annular tubes. safety 24, 25 to prevent gas escaping and environmental pollution.
  • the first ring 24 is located between the production tube 21 and the intermediate tube 22. This ring is filled with water and must not be under pressure. If on the contrary this annular is under pressure, it indicates a leak to one of the elements at the bottom of the well.
  • the second annular 25 is located between the intermediate tube 22 and the outer tube 23 and is filled with cement.
  • the gas rises to the surface through the first ring 24 and arrives at the level of the base flange 3.
  • the connecting thread between the intermediate tube 22 and the base flange 3 not necessarily waterproof, the leak is reported on the surface in the cellar. More particularly, corrosion occurs on the lower surface 31 of the flange 3 but also on the outer wall of the intermediate tube 22, close to the junction between the flange 3 and the tube 22.
  • the invention proposes to make this leak tight by application of one or more polymer layers 4 flanking an O-ring 5, the whole being compressed by a metal reinforcing collar 6 forced by studs 7 which replace the screws 32 by which the base flange 3 is initially secured to the wellhead 1.
  • the corroded surfaces of the flange 3 and the tube 22 are etched and thoroughly cleaned, especially degreased, in order to then apply a composite polymeric repair material, in particular elastomer, two components.
  • the pickling is advantageously carried out by sandblasting or shot blasting with sufficiently fine particles to obtain a roughness of the order of 75 micrometers of the surface of the tube 22 and the surface 31 of the flange 3.
  • the etched surfaces are treated with an anticorrosive coating to prevent further corrosion until the application of a protective composite material.
  • the composite repair material which is advantageously a two-component elastomeric polymeric material, is applied to the surfaces to be treated in one or more layers 4 in accordance with the indications of the manufacturer of the material, particularly with regard to the duration and the polymerization temperature determined by the manufacturer.
  • the first of the three mandatory steps of the method of the invention is characteristic of the method of the invention, the pickling steps and anticorrosive coating can be modified according to the precise nature and scope of the particular damage to be repaired.
  • the location provided for the O-ring 5 is prepared by filling an area 9 located between the thread of the tube 22 and the location of the O-ring with several layers of polymeric repair composite materials. according to the specifications of the manufacturer of the composite material.
  • the O-ring 5 which is made for example of nitrile, is placed in the angle formed by the bottom surface 31 of the base flange 3 and the outside face of the tube 22.
  • the reinforcing collar 6 itself protected against corrosion by a coating, is disposed below the base flange 3
  • a sealing device is made with an annular ring 11 of polyurethane foam and an epoxy resin casting ring 12 so that, when the resin is hardened, it has an upper surface 13 sloping outwardly of the tube 23 to prevent water stagnation and corrosion.
  • a small tube 14 is mounted in the flange 11 so as to capture the gas to monitor whether there is a rise in pressure or to analyze the gas or to determine the leakage rate.
  • On the free end of the small tube 14 are mounted a valve and a pressure gauge.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Pipe Accessories (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
EP12159302.4A 2011-03-25 2012-03-13 Procédé de réparation in situ d'une bride de base d'une tête de puits. Active EP2503095B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12159302T PL2503095T3 (pl) 2011-03-25 2012-03-13 Sposób naprawy in situ kołnierza podstawy głowicy odwiertu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1152482A FR2973063B1 (fr) 2011-03-25 2011-03-25 Procede de reparation in situ d'une bride de base d'une tete de puits

Publications (2)

Publication Number Publication Date
EP2503095A1 EP2503095A1 (fr) 2012-09-26
EP2503095B1 true EP2503095B1 (fr) 2015-06-10

Family

ID=45808341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12159302.4A Active EP2503095B1 (fr) 2011-03-25 2012-03-13 Procédé de réparation in situ d'une bride de base d'une tête de puits.

Country Status (7)

Country Link
US (1) US9169708B2 (ru)
EP (1) EP2503095B1 (ru)
CN (1) CN102691489B (ru)
DK (1) DK2503095T3 (ru)
FR (1) FR2973063B1 (ru)
PL (1) PL2503095T3 (ru)
RU (1) RU2564307C2 (ru)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439886B (zh) * 2014-10-21 2016-08-17 山东钢铁股份有限公司 一种真空炉扩散泵铸铁外壳裂纹粘贴加固装置及裂纹粘贴修补方法

Family Cites Families (33)

* Cited by examiner, † Cited by third party
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US1913778A (en) * 1930-12-01 1933-06-13 Bozidar J Ukropina Concrete pipe joint
US2667865A (en) * 1948-12-31 1954-02-02 Herman Harry Hirsch Device for forming pipe joints
US3563276A (en) * 1968-08-29 1971-02-16 Bonded Products Inc Pipe joint cocoon
SU576388A1 (ru) * 1973-11-30 1977-10-15 Восточный научно-исследовательский нефтегазовый институт по технике безопасности и промсанитарии Способ креплени фланцев фонтанной арматуры
GB1482461A (en) 1974-01-02 1977-08-10 Carnahan D Replacement of seals in a well ram type blow out prevente
FR2297990A1 (fr) * 1975-01-17 1976-08-13 Carnahan David Perfectionn
GB1546073A (en) * 1976-05-10 1979-05-16 Ready Seal Ltd Method of repairing leaks in pipes and pipelines carrying fluent medium under pressure and means for use in the method
US4166479A (en) * 1977-05-09 1979-09-04 Cleavenger Associates, Inc. Blind liner for service pipes
SU979778A1 (ru) * 1980-06-04 1982-12-07 Украинский научно-исследовательский и проектно-конструкторский институт подземной гидравлической добычи угля "УкрНИИгидроуголь" Быстроразъемное соединение трубопроводов
US4390186A (en) 1982-02-04 1983-06-28 Combustion Engineering, Inc. Metal-to-metal ribbed seal
US4673122A (en) * 1986-05-22 1987-06-16 Dubey Thomas W Method and apparatus for repairing copper pipes
FR2600371B1 (fr) 1986-06-23 1990-11-02 Biogaz System Depollution Valo Tete de puits a debit reglable pour exploitation de biogaz
US4852913A (en) * 1987-01-08 1989-08-01 Brooks Albert J Apparatus for repairing pipes
SU1499051A1 (ru) * 1987-12-29 1989-08-07 Волго-Уральский Научно-Исследовательский И Проектный Институт По Добыче И Переработке Сероводородсодержащих Природных Газов Способ герметизации течи фланцевых соединений
SU1702066A1 (ru) * 1988-09-26 1991-12-30 Проектно-Строительное Объединение "Саратовсельхозводопроводстрой" Устройство устранени течи из раструбного соединени трубопровода
FR2637316B1 (fr) * 1988-10-04 1991-07-05 Smf Int Procede et dispositif de fixation d'une tete de cuvelage sur l'extremite superieure d'un cuvelage de puits
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Also Published As

Publication number Publication date
RU2012111563A (ru) 2013-09-20
CN102691489B (zh) 2017-04-12
FR2973063B1 (fr) 2015-01-16
PL2503095T3 (pl) 2016-01-29
US20120240373A1 (en) 2012-09-27
RU2564307C2 (ru) 2015-09-27
CN102691489A (zh) 2012-09-26
US9169708B2 (en) 2015-10-27
EP2503095A1 (fr) 2012-09-26
DK2503095T3 (en) 2015-09-14
FR2973063A1 (fr) 2012-09-28

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