WO2019213726A1 - Procédé d'utilisation et outil pour la segmentation et l'étanchéification de conduits en général et d'ombilicaux pour l'entretien et la mise hors service de conduites sous-marines - Google Patents

Procédé d'utilisation et outil pour la segmentation et l'étanchéification de conduits en général et d'ombilicaux pour l'entretien et la mise hors service de conduites sous-marines Download PDF

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Publication number
WO2019213726A1
WO2019213726A1 PCT/BR2019/050150 BR2019050150W WO2019213726A1 WO 2019213726 A1 WO2019213726 A1 WO 2019213726A1 BR 2019050150 W BR2019050150 W BR 2019050150W WO 2019213726 A1 WO2019213726 A1 WO 2019213726A1
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WO
WIPO (PCT)
Prior art keywords
tool
rov
hydraulic
sealing
press
Prior art date
Application number
PCT/BR2019/050150
Other languages
English (en)
Portuguese (pt)
Inventor
Andre Luis DE FREITAS
Gian Marco ZAMPIERON
Original Assignee
De Freitas Andre Luis
Zampieron Gian Marco
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 De Freitas Andre Luis, Zampieron Gian Marco filed Critical De Freitas Andre Luis
Publication of WO2019213726A1 publication Critical patent/WO2019213726A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
    • F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing

Definitions

  • the present invention relates to a method and tool (Figure 1) for maintenance and decommissioning of general and umbilical pipelines in subsea production fields for the oil industry.
  • the method enables the installation and use of a cutting and tightness tool on a split clamp structure for subsea ducts and umbilicals to be decommissioned and maintained quickly, operated via a remotely operated subsea vehicle (ROV) at depths above 300m of water depth.
  • ROV subsea vehicle
  • the technology proposed through its simplified features eliminates the need for lifting and pulling (towing) via PLSV of the stretch of the line to be decommissioned or replaced, leaving the line resting on the ocean floor in a segmented and watertight manner to form a new one. coral chain, and not affecting, and mainly preserving the existing native coral chain monitored by IBAMA prior to the installation of existing pipelines in operation.
  • Decommissioning is the end-of-life process of oil and gas exploration and production facilities. Refers to dismantling and, in most cases, the removal of equipment. It can be described as the best way to close the production operation at the end of the productive life of an oil field (RUIVO, 2001). It is essentially multidisciplinary, as it requires a detailed and weighted method with diverse areas of engineering (environmental, financial and occupational safety), politics and social welfare.
  • Brazil has approximately 105 offshore production platforms (FERREIRA, 2003). All of these structures are designed and built to fit perfectly into a field designated for oil or gas production for at least 20 to 30 years. During this time, structures that become submerged become an integral part of the underwater ecosystem. Carbon steel structures become a point of attraction and protection for the most varied species of fish. In symbiosis with algae, corals and mollusks, their vertical, horizontal and oblique steel bars will quickly be marine life, thanks not only to nature but also to increasingly stringent environmental laws (IBAMA).
  • IBAMA increasingly stringent environmental laws
  • Decommissioning of subsea systems can vary greatly, from production through a single well to a multi-system system. manifolds, templates, risers, wet Christmas trees, anchor lines. In practice, it is observed that in shallow and median water depths, complete removal of these elements can be achieved using existing cutting technologies, allied with small vessels. Already in larger water depths according to the objective of this descriptive, as occurs in much of the Campos Basin, in Rio de Janeiro; It is necessary to use innovations in the technological field aiming mainly at cost-effective operations and compliance with current laws as mentioned above increasingly severe.
  • the present method of tool installation as well as the cutting and tightness of ducts can be used in the corrective and predictive maintenance (via inspection) of ducts in operation for the purpose of replacing damaged or duct sections. prone to new failures for continued field operation.
  • the present invention was developed from the philosophy of performing the dismemberment and tightness of general and umbilical lines to be left in the seabed without the need for washing, towing and hoisting as previously mentioned.
  • the invention comprises a method for decommissioning lines and umbilicals and a tool to be used by following the steps below:
  • step 1 visual survey of duct or umbilical conditions to be maintained or decommissioned via ROV.
  • the information provided in this step is also critical for sizing the equipment to be used in the intervention.
  • ROV remotely operated submarine vehicle
  • step 2 manufacture of the cutting and tightness tool for ducts and umbilicals to be decommissioned and maintained.
  • Inox and Super Duplex Be provided with holes circumferentially disposed by the clamp spaced apart and distributed along the surface of each half section of the split clamp.
  • Fabricated clamps involve simpler manufacturing processes and may use more readily available materials such as plate and tube.
  • the manufacture of a clamp involves large structural welds that must be able to withstand the full separation load and maintain the stiffness of the clamp.
  • Large structural welds often result in a degree of distortion and require additional machining and post weld heat treatment processes to be performed, so fabricated clamps also involve significant lead time.
  • This tool consisting of clamp for operation is required to use ROV due to the depth of operation of the subsea lines concerned, to distribute and operate the clamps. As such, consideration should be given during the design and manufacture of such clamps so that they are suitable for ROV use. For example, when converting a split sleeve clamp for ROV operation, sacrificial bolt tensioners may be provided for bolting operation, as a result of this, a separate mechanism is required for locking in bolt pretension via ROV and allows the hydraulic supply to be separated.
  • the pipe interface arrangement further comprises an external stage of each seal corresponding to an opposite stage in the coupling face.
  • a pipe interface arrangement comprises internal and external sealing elements adapted for location between the inside diameter of the clamp and the wall of the pipe.
  • the sealing elements may be of any suitable shape or construction.
  • the sealing elements for example, may comprise elastomeric sealing elements or compression seals.
  • the lock may be of any suitable shape or construction.
  • the locking may comprise locking elements internal and external.
  • the locking elements may comprise the conical locks.
  • pipe interface arrangements in accordance with embodiments of the present invention dispenses with the need for secondary bolt tensioning locking as may otherwise be required in conventional arrangements and therefore , are particularly advantageous in underwater positioning.
  • a failure mode for traditional clamps has been found to be the effect of temperature on elastomeric seals.
  • relatively high temperatures have been found to cause the sealing elements to expand and extrude in design clearances. When the temperature drops again, however, the seal may not fully recover resulting in a leak path to the fluid.
  • the pipe interface arrangement according to particular embodiments of the present invention may further comprise a resilient member adapted for location between the sealing members. In use, the resilient element is adapted to maintain a loading force on the seals while allowing temperature induced expansion.
  • the resilient element may comprise a spring element provided between a tubular sealing ring, whose location of the spring element in the ring between the sealing elements ensures that they can be kept insulated, for example, from the tubing product and / or sea water.
  • a high capacity press with a horizontally moving central cavity, driven by hydraulic servo mechanisms (ROV-operated pistons) is installed to move the press. Still within the tool frame, a static cutter blade is located on the opposite side of the press, in the end-of-stroke position of the press, the cutter blade described above lodges fully within the press cavity when it is in use. end of course.
  • the tool, panels for access and control of the tool opening and closing mechanisms (clamp), as well as access and control of the hydraulic press mechanism via hydraulic circuits through ROV intervention complement the tool.
  • step 3 procedure for installing and using the tool:
  • the vessel shall have a coupled ROV that operates in deep water with hydraulic tools and is capable of providing hydraulic fluid.
  • a spreadbar should be positioned on the lifting equipment with wire ropes attached at its ends to the tool; being possible to install float on the spreadbar.
  • the assembly must be positioned by the boat at the georeferenced coordinate of the point of the line to be sectioned.
  • the ROV must be equipped with a dredging tool, directed to the line cut point where the seabed should be dredged compatible with the smaller tool dimension.
  • the ROV returns to the vessel for dredging tool disconnection, and equipped with hydraulic accumulators to perform bolt torquing operations (10), tool opening and closing hydraulic fluid injection (Figure 1) and pressing the duct pressing and cutting cylinders (1).
  • the ROV connects (4) to the tool panel by pressurizing the tool closure cylinders, the ROV drives the control panel override by actuating the hydraulic tool closure cylinder, so the tool closes the tube.
  • the ROV connects the hydraulic tool to the line of the duct kneading and cutting press hydraulic cylinders (14), opens the override and segmentation of the decommissioned lines.
  • the ROV relieves cylinder pressure by observing the indication on the tool panel gauge, closes the override, and disconnects the power tool from the tool panel.
  • step 5 uninstall tool procedure:
  • ROV connects hydraulic coupling / quick coupling to tool panel by pressurizing tool closing cylinders, ROV triggers control panel override relieving hydraulic tool closing cylinder, thus opening free of 2 pipe pieces sectioned.
  • FIG. 1 top view of the General and Umbilical Pipeline Segmentation and Tightness Tool, indicating the pipe clamping and pressing mechanism, Duct to be Sectioned (1), Split Flange (2), Hydraulic Cylinder Clamping Arm Actuator (3), Press Control Panel and Equipment Clamping Arm Actuator (Composed of 1 limit switch, 2 Override's and 3 shutoff valves) (4), Hydraulic Cylinder Press Actuation (6), Split Frame Top Cover (7), Split Frame Lower Cover (8), Tool Frame Lift Eyes (9), ROV Lockable Screw (10), Element Fixation Screw of Press Chamber Frame (1 1), Split Flange Bolt (17).
  • FIG 2 side view of the General and Umbilical Pipeline Segmentation and Tightness Tool, indicating the pipe clamping and pressing mechanism, composed of the Equipment Closing Articulated Arm Hydraulic Cylinder (3), Structure Tool Press Chamber (5), ROV Handle Handle (12), Equipment Closure Swing Arm (18), Tool Frame Shoe (19).
  • FIG 4 top cross-sectional view of the General and Umbilical Pipeline Segmentation and Tightness Tool, indicating composed of Split Frame Top Cover (7), Split Mechanical or Hydraulic Seal (13), Central Cavity Hydraulic Press for Cutting Blade (14), Fixed Cutting Blade (15).
  • FERREIRA D.F. Anticipating impacts of financial assurance requirements for offshore decommissioning: a decision model for the oil industry. Thesis (Doctorate in Sciences). Campinas: graduate Program in Geosciences, UNICAMP, 2003.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un procédé d'utilisation et un outil (figure 1) pour l'entretien et la mise hors service de conduits en général et d'ombilicaux dans des champs de production sous-marins pour l'industrie pétrolière. Le procédé permet l'installation et l'utilisation d'un outil de coupe et d'étanchéification dans une structure de type bride en deux parties pour conduits et ombilicaux sous-marins à mettre hors service et à entretenir de manière rapide, cet outil étant mis en oeuvre par l'intermédiaire d'un véhicule sous-marin téléguidé pour profondeurs supérieures à 300 m. La technologie proposée supprime la nécessité de hissage et de traction par le navire du tronçon de la conduite à mettre hors service ou à remplacer, la conduite pouvant reposer sur le fond océanique de manière segmentée et étanche, ce qui permet de protéger, et notamment de préserver, les chaînes de coraux natifs existantes surveillées par l'IBAMA avant l'installation de ces conduits en fonctionnement, l'utilisation d'embarcations spéciales n'étant par ailleurs plus nécessaire pour réaliser l'opération.
PCT/BR2019/050150 2018-05-11 2019-04-25 Procédé d'utilisation et outil pour la segmentation et l'étanchéification de conduits en général et d'ombilicaux pour l'entretien et la mise hors service de conduites sous-marines WO2019213726A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR102018009604-4 2018-05-11
BR102018009604-4A BR102018009604A2 (pt) 2018-05-11 2018-05-11 Método de utilização e ferramenta para segmentação e estanquiedade de dutos em geral e umbilicais para manutenção e descomissionamento de linhas submarinas

Publications (1)

Publication Number Publication Date
WO2019213726A1 true WO2019213726A1 (fr) 2019-11-14

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BR (1) BR102018009604A2 (fr)
WO (1) WO2019213726A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770301A (en) * 1972-05-08 1973-11-06 H Adams Repair flange clamp
US20060065320A1 (en) * 2004-09-29 2006-03-30 Borland Robin N Pipeline repair system and method of installation
BRPI0504668A (pt) * 2004-09-02 2006-05-02 Vetco Gray Inc equipamento de manobra de tubulação para sonda marìtima com preventor de erupção de superfìcie
WO2014173976A1 (fr) * 2013-04-25 2014-10-30 Cgg Services Sa Procédés et bases sous-marines permettant d'utiliser un véhicule sous-marin autonome pour des prospections sismiques en mer
BR102014002292A2 (pt) * 2014-01-30 2016-01-05 Petroleo Brasileiro Sa método de reparo de duto flexível de produção com abraçadeira bipartida e material composto

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770301A (en) * 1972-05-08 1973-11-06 H Adams Repair flange clamp
BRPI0504668A (pt) * 2004-09-02 2006-05-02 Vetco Gray Inc equipamento de manobra de tubulação para sonda marìtima com preventor de erupção de superfìcie
US7513308B2 (en) * 2004-09-02 2009-04-07 Vetco Gray Inc. Tubing running equipment for offshore rig with surface blowout preventer
US20060065320A1 (en) * 2004-09-29 2006-03-30 Borland Robin N Pipeline repair system and method of installation
WO2014173976A1 (fr) * 2013-04-25 2014-10-30 Cgg Services Sa Procédés et bases sous-marines permettant d'utiliser un véhicule sous-marin autonome pour des prospections sismiques en mer
BR102014002292A2 (pt) * 2014-01-30 2016-01-05 Petroleo Brasileiro Sa método de reparo de duto flexível de produção com abraçadeira bipartida e material composto

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