• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1,206,417. Wells. INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS. 27 Dec., 1967 [28 Dec., 1966], No. 58707/67. Heading E1F. Tools are introduced into a submerged well head 2 from a mobile surface installation 3 through a flexible pipe 6 having means 7 to connect it to the well head and being surrounded at the upper end by a bell-shaped member 24 connected to the installation 3 and at the lower end by a bell-shaped member 25 connected to the connecting means 7. The wall of each member 24 or 25 in an axial plane is curved with a sufficient radius of curvature to prevent tools becoming jammed in the pipe. The radius of curvature may be constant. The larger end of each member may have a flange portion of a lesser radius, but larger than the minimum radius necessary for winding the pipe. The pipe is tensioned, with slack being taken in, by a cable 16 connecting the top of the pipe with installation or vessel 3 and running over a pulley 19 mounted on a frame 14 movable by an hydraulic jack 21. Tools - for example for scraping the tubings of a well or for measuring - are raised or lowered by a cable 4 connected to a winch 5 and running over a pulley 20 on frame 14. Tools are inserted into the pipe through a lock or tube 26. Blow out preventors 13 and 29 are provided at the ends of the pipe. Cable 8 which may be positioned inside pipe 6 is used to control the connecting means 7 and the well valves.
    公开号:SU712037A3
    申请号:SU671206415
    申请日:1967-12-27
    公开日:1980-01-25
    发明作者:Жубер Филипп；Кастела Андре
    申请人:Энститю Франсэ Дю Петроль Де Карбюрант Э Любрифиянт (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to the field of drilling from floating installations and vessels, in particular to devices for flexible drainage columns (seawaters) connecting the drilling vessel with the wellhead.
    The known structure of the device for introducing a flexible column into a well composed of a funnel at the wellhead and a flexible pipe 1.
    However, this device does not eliminate the kinks, the hose with significant deviations of the vessel.
    A device for a marine flexible well for launching tools into a subsea well is known, comprising a wellhead and a hollow flexible column with lower and upper restricting funnels 2.
    A disadvantage of this device is the impossibility of lowering the inner hollow flexible string of long instruments when the hose is bent, fixed, on the wellhead and on a floating installation.
    The aim of the invention is to preserve the flow cross section of the flexible column for the passage of tools.
    This is achieved by the fact that the inner walls of the restriction funnels
    in axial section, they have a curvilinear -form with a radius of curvature that exceeds the radius corresponding to the relation:
    P) 2fD-d)
    D is the inner diameter of the flexible
    Where
    columns;
    d is the maximum diameter of the tool being lowered into the well; L - half the length of rigid
    tool parts;
    moreover, R must be greater than the minimum radius allowed when bending a flexible column.
    In addition, the lower funnel / is provided with a safety collar mating with the expanding part of the funnel.
    Figure 1 shows a drilling vessel with a flexible well, a general view; Fig. 2 shows a lower limiting funnel of a flexible stand; On Lig.3 the same, with a safety collar.
    权利要求:
    Claims (2)
    [1]
    The device of the marine flexible well for launching the tool into the well-ezhinu from the drilling vessel contains a wellhead 2, a hollow gyrTa column 3 with the lower 4 and the upper restrictive funnels. To collect the flow section of the flexible column 3, when passing through tools or workbench 6, the inside walls of the restrictive funnels in axial section have a curvilinear shape with a radius of curvature exceeding the radius corresponding to the relation:) 1 where D is the internal diameter of the flexible column ; a is the maximum diameter of the tool, which is penetrated into the well L, is half the length of the rigid part of the tool, and R must be greater than the minimum radius allowed for bending of the flexible column. The lower funnel can be (as an option) equipped with a safety collar 7. The upper funnel is made similarly to the lower funnel, but without the collar. In the lower part of the hollow flexible column 3 of the flexible drainage junction is connected to the remote 8 via remote control 9 flexible pipe 10. A guide device 11 is located above the muT. The weight of the seawall is supported in the upper part by a tension device 12 consisting of a hydraulic-pneumatic cylinder 13, a guide 14 of the carriage 15, on which and two fixed blo ting block 16 for a cable tensioner unit 17 for RIH instruments or tools 6. At. a cable .18 between the level vessel and the wellhead — in addition to the sea flexible well, there is a connection in the form of guide cables 19. The device operates as follows. A flexible one is lowered from the drill vessel along the guide cables 19 to the wellhead prior to contact with the wellhead. The coupling of the sleeves 8 with the wellhead 2 is carried out remotely from the control panel 9. Tensioning device 12 is maintained by the constant tension of the marine flexible stand during the vertical oscillations of the drilling vessel. At. Horizontal displacement of the vessel, from the point of standing of the hollow of the hollow, column 3 receives an inclination, the size of which is limited from the lower and upper boundaries by funnels. The craters of the funnels have a curvilinear shape in the axial section with a smooth change in the angle of inclination relative to the axis of the column. Based on the geometrical dimensions (length and diameter) of tools that are lowered into the well, the radius of curvature of the installed funnel is calculated according to the formula given above, which ensures that the flexible string fits to the inner walls of the funnels, which should allow the passage of the specified dimensions of the tool. The presence of the collar 7 on the lower funnel provides a supporting surface for the flexible column, preventing its damage if the drilling vessel accidentally deviates with an amplitude larger than that allowed by the socket of the main funnel. The invention increases the reliability of the descent of tools into the well through a flexible offshore station. Claim 1. Arrangement of a marine flexible well for launching a tool into a subsea well, comprising a wellhead and a hollow flexible column with lower and upper restriction funnels, preserving the flow section of the flexible column for the passage of tools, the inner walls of the restriction funnels in axial section have a curvilinear shape with a radius of curvature greater than the radius corresponding to vuyuschy relation: 2 (where D - inner diameter of the flexible columns; c1 - maximum diameter of descent into the wellbore yn strument; L - half length of the tool rigid; wherein R must be greater MiniCom) 1alnogo radius of acceptable flexural flexible column. 2. The device, that is, the ti and ny with the fact that the bottom of the funnel is equipped with a safety collar, mating with the expanding part of the funnel. Sources of information taken into account in the examination 1. The patent of the Federal Republic of Germany 1186426, cl.5a 7/12, published. 30. 09. 65.
    [2]
    2. Patent aUA No. 3142343, kl.1757, published OO.08.08.65.
    2
    3
    类似技术:
    公开号 | 公开日 | 专利标题
    SU712037A3|1980-01-25|Flexible sea column design
    CA2475006C|2010-07-20|Method and arrangement by a workover riser connection
    US6276456B1|2001-08-21|Riser system for sub-sea wells and method of operation
    US6745840B2|2004-06-08|System for accessing oil wells with compliant guide and coiled tubing
    US3604731A|1971-09-14|Simultaneous pipeline-wellhead connections
    US4570716A|1986-02-18|System and apparatus of liason between an underwater wellhead and a surface support
    US6250395B1|2001-06-26|Apparatus system and method for installing and retrieving pipe in a well
    KR100634989B1|2006-10-17|Floating offshore construction, and floating element
    CA2298390C|2004-06-15|Universal catenary riser support
    US3202217A|1965-08-24|Submarine cellar for deep water drilling operations
    US4365912A|1982-12-28|Tension leg platform assembly
    US3724224A|1973-04-03|Method for installing double-walled pipelines
    US4098091A|1978-07-04|Riser guide member
    GB2069955A|1981-09-03|Anchoring apparatus for a ship used in the production of hydrocarbons
    KR101792706B1|2017-11-02|Riser and floating drillship the same
    US3650114A|1972-03-21|Method and apparatus for connecting a flowline to an offshore installation
    US3376708A|1968-04-09|Pipeline riser installation
    US3599436A|1971-08-17|Pipeline connections with underwater work chamber
    GB1285600A|1972-08-16|Apparatus to facilitate drilling and working in offshore wells
    ES2256923T3|2006-07-16|UPPER CATENARY SUPPORTS.
    US3466882A|1969-09-16|Offshore installation and method of installing a pipe riser
    US4151888A|1979-05-01|Submergible pile driver with extension tube to accommodate tensioned cable string loops
    US4074541A|1978-02-21|Method of installing a flexible riser
    US4848480A|1989-07-18|Method and apparatus for wire line protection in a well
    US3546889A|1970-12-15|Construction of multiple pipe risers to offshore platforms
    同族专利:
    公开号 | 公开日
    FR1540288A|1968-09-27|
    NO124078B|1972-02-28|
    GB1206417A|1970-09-23|
    NL6717545A|1968-07-01|
    NL160049C|1979-09-17|
    US3516488A|1970-06-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2567586C2|2014-03-27|2015-11-10|Российская Федерация, от имени которой выступает государственный заказчик |Guide bell of drilling research ship for frilling without riser|
    RU2567572C2|2010-05-21|2015-11-10|Статойл Петролеум Ас|Weak link point with mechanical bend|
    RU2573890C2|2010-04-28|2016-01-27|Статойл Петролеум Ас|Electronically controlled weak link against combined load|US3142343A|1960-12-14|1964-07-28|Shell Oil Co|Method and apparatus for drilling underwater wells|
    US3142344A|1960-12-21|1964-07-28|Shell Oil Co|Method and apparatus for drilling underwater wells|
    FR1378308A|1963-10-10|1964-11-13|Akad Wissenschaften Ddr|Continuous process for the production of polyacrylonitrile and its copolymers in dimethylformamide|
    US3277969A|1964-02-07|1966-10-11|Pan American Petroleum Corp|Underwater drilling|
    US3336975A|1965-03-09|1967-08-22|Armco Steel Corp|Method and apparatus for installing flow lines and the like in underwater well installations|
    US3367421A|1965-08-06|1968-02-06|Baker Oil Tools Inc|Curved flow lines for well bores|
    US3378067A|1966-05-20|1968-04-16|Mobil Oil Corp|Underwater wellhead|US3708990A|1970-12-09|1973-01-09|Global Marine Inc|Deep water drill pipe controlled manipulator|
    FR2165811B2|1971-12-31|1974-10-11|Inst Francais Du Petrole|
    US3943868A|1974-06-13|1976-03-16|Global Marine Inc.|Heave compensation apparatus for a marine mining vessel|
    FR2276452B1|1974-06-26|1976-12-24|Erap|
    US4185694A|1977-09-08|1980-01-29|Deep Oil Technology, Inc.|Marine riser system|
    US4240506A|1979-02-21|1980-12-23|Conoco, Inc.|Downhole riser assembly|
    US4281716A|1979-08-13|1981-08-04|Standard Oil Company |Flexible workover riser system|
    US6614591B1|2002-06-06|2003-09-02|The Boeing Company|Optical combiner|
    US7150324B2|2002-10-04|2006-12-19|Halliburton Energy Services, Inc.|Method and apparatus for riserless drilling|
    US20080185153A1|2007-02-07|2008-08-07|Schlumberger Technology Corporation|Subsea intervention with compliant guide|
    WO2008118680A1|2007-03-26|2008-10-02|Schlumberger Canada Limited|System and method for performing intervention operations with a compliant guide|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR89255A|FR1540288A|1966-12-28|1966-12-28|Equipment for inserting tools or instruments into a submerged well from a floating installation|
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