US3421581A - Method and apparatus for carrying out operations on a well under water - Google Patents

Method and apparatus for carrying out operations on a well under water Download PDF

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Publication number
US3421581A
US3421581A US578831A US3421581DA US3421581A US 3421581 A US3421581 A US 3421581A US 578831 A US578831 A US 578831A US 3421581D A US3421581D A US 3421581DA US 3421581 A US3421581 A US 3421581A
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United States
Prior art keywords
platform
pipe string
vessel
carrying
out operations
Prior art date
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Expired - Lifetime
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US578831A
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English (en)
Inventor
Jacob Van Geijn
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Shell USA Inc
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Shell Oil Co
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Filing date
Publication date
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Publication of US3421581A publication Critical patent/US3421581A/en
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    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • E21B7/128—Underwater drilling from floating support with independent underwater anchored guide base
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/09—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods specially adapted for drilling underwater formations from a floating support using heave compensators supporting the drill string
    • 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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations

Definitions

  • This invention relates to a method and to apparatus for carrying out operations, for example, maintenance work, through a pipe string on an oilor gas well under water.
  • the method according to the invention therefore comprises securing the pipe string to a subsea object such as the wellhead of a well, securing the top part of the pipe string to a platform arranged on a floating vessel which platform is so secured to the vessel that it is movable relatively to the vessel, applying an upwardly directed force to the platform so as to keep the pipe string under tension, and carrying out operations on the well from the platform and through the pipe string.
  • a floating structure for carrying out the method according to the invention comprises a platform so secured to a floating vessel that it is movable relative to the vessel, a vertical opening in the platform, a clamping device near the opening for securing a vertical pipe string to the platform and means on the structure for applying an upwardly directed force to the platform.
  • FIGURE 1 is a diagrammatic side elevation of an em bodiment of a floating structure suitable for carrying out the method according to the invention.
  • FIGURE 2 shows a modified embodiment of a floating structure suitable for carrying out the method according to the invention.
  • FIGURES 1 and 2 both show a floating structure 1 floating in a body of water 2 having a water level 3, which structure 1 comprises a vessel 4 and a platform 5.
  • the platform 5 is so secured to the floating vessel 4, for example by suitable vertical guide means (not shown), that it is vertically movable relatively to the vessel 4.
  • a vertical opening 6 is present in the platform 5.
  • Adjacent to Patented Jan. 14, 1969 the opening 6 is arranged a clamping device 7 which serves for securing a vertical pipe string 8 to the platform 5.
  • a vertical hole 9 which is for example cylindrical, is present to allow the pipe string 8 to pass through the vessel 4.
  • Emergency controls must be provided to stop the platform 5 from shooting upwardly in the event of the pipe string 8 breaking or becoming loosened.
  • the platform 5 Before the pipe string 8 is connected to a wellhead it must be possible to raise and lower the platform 5 and only when the pipe string 8 has been connected to the wellhead will the platform 5 be allowed to exert an upward force on the pipe string 8.
  • the clamping device 7 is preferably removable, and can also be used to raise or lower pull out pipe strings between the structure and the wellhead.
  • the vertical hole 9 should be large enough to permit lifting through hole 9 of Christmas trees, blow-out preventers or other equipment. Furthermore, the hole 9 need not be cylindrical, but it may widen from its upper to its lower ends.
  • cables 10 are secured to the platform 5, the other end of each cable 10 being provided with a weight 11 and each cable 10 being led over a pllley 12.
  • Each pulley 12 is rotatably secured to a piller 13 which is supported by the vessel 4.
  • Each pulley 12 is arranged at a level above the highest possible position of the platform 5 relative to the vessel 4.
  • the floating structure as shown in FIGURE 1 is used as follows.
  • One end of at least one pipe string 8 is latched on to a subsea object, for example to an oil well (not shown), for example by using divers, or guiding cables, or a remotely operated propulsion device having a television camera.
  • the pipe string 8 is connected with one end to the subsea object by suitable connections, for example by connections which can be remotely operated and which may include emergency releases.
  • the upper end of the pipe string 8 is passed through the hole 9 and through the opening 6.
  • the clamping device 7 By means of the clamping device 7 the upper end of the pipe string 8 is fixedly secured to the platform 5.
  • the weights 11 secured by the cables 10 to the platform 5 exert upwardly directed forces on the platform 5 and since the platform 5 is secured to the end of the pipe string 8, the latter will always be kept under tension.
  • the platform 5 will remain in its position so that the vessel 4 will move vertically relatively to the platform 5.
  • the pillars 13 and the pulleys 12 will move upwardly as well and since the platform 5 remains stationary the pulleys 12 will be caused to rotate and the weights 11 will be displaced upwardly relatively to the platform 5.
  • the platform 5 will remain stationary and the pulleys 12 will be caused to rotate in the opposite direction and the weights 11 will be displaced downwardly relatively to the platform 5.
  • the platform 5 can be provided with conventional equipment for carrying out wireline operations, for example equipment as shown in FIGURE 1 and indicated by the numbers 14, 15, 16, 17, 18, 19, 20, 21, 22. Since this equipment does not form part of the invention it will not be discussed in detail.
  • FIGURE 2 The embodiment as shown in FIGURE 2 is provided with a hydraulic system for moving the platform 5 relatively to the vessel 4 instead of the system comprising weights 11 as shown in FIGURE 1. It is remarked, however, that instead of counterweights or a hydraulic system it is also possible to use a pneumatic or an electrical system, if desired.
  • a number of (for example four) hydraulic cylinders 23 is arrange din each of which a plunger or piston (not shown) is present which is axially movable in the cylinder 23.
  • a bar or rod 24 is secured, of which the upper end is connected to the platform 5.
  • the connection of the bars or rods 24 with the platform may be direct or through a gimbal support.
  • the axial (vertical) movement of the bars or rods 24 may be controlled by any suitable control system which senses the deviation or any derivative of the deviation of the platform from the desired horizontal plane.
  • the deviation of the platform from the desired horizontal plane is sensed by a sensing device 25. From the sensing device 25 signals can be transmitted through a line 26 to a controller 27.
  • the tension in the pipe string 8 can be sensed by sensing devices 28 which are each connected to one of the cylinders 23 by lines 29. Each sensing device 28 is connected to the controller 27 by lines 30 through which signals can be transmitted from the sensing devices 28 to the controller 27.
  • the controller 27 can process the signals, received from the sensing devices 25 and 28, and can decide on the hydraulic pressures required in the cylinders 23 to keep the platform 5 in the desired horizontal plane and to keep the pipe string 8 under the proper tension.
  • the controller 27 can then regulate the pressure in the cylinders 23 accordingly, e.g. by operating threeway control valves 31 and 32 by sending through lines 35 signals to servo-valve mechanisms 33 and 34.
  • the valves 31 and 32 are arranged respectively in a line 36 and in a line 37 which each connect the pressure side of a liquid-pump 38 with a corresponding cylinder 23.
  • the suction side of the pump 38 is connected through a line 39 to a tank 40 containing a suitable liquid, for example oil.
  • a drain line 41 connects the valve 31 with the top of the tank 40 and a drain line 42 connects the valve 32 to the drain line 41.
  • On the platform 5 can be located conventional equipment for carrying out drilling operations, for example a derrick 43, a hoist 44, a cable 45, a travelling block 46 (shown in FIGURE 2) for lowering the pipe string 8 or hoisting the pipe string 8 from the hole 9 or for lowering pipes 48 into or hoisting pipes 48 from the pipe string 8.
  • each cylinder 23 is connected to a corresponding pressure tank (not shown), containing gas and having a volume which is large relative to the volume of the corresponding cylinder 23.
  • a method of carrying out operations, for example maintenance work, on a well under water through a pipe string comprising securing the pipe string to a subsea wellhead of a well, securing the top part of the pipe string to a platform, arranging said platform on a floating vessel in a manner such that the platform is vertically movable relatively to the vessel, applying an upwardly directed force to the platform with said force independent of the motion of said vessel so as to keep the pipe string under tension, and carrying out operations on the Well from the platform and through the pipe string.
  • a floating structure for carrying out operations at offshore locations, said structure comprising a platform so secured to a floating vessel that it is vertically movable relatively to the vessel, a vertical opening in the platform, a clamping device near the opening for securing a vertical pipe string to the platform and means on the structure for applying an upwardly directed force to the platform as said platform moves vertically relative to said vessel.
  • the means for applying an upwardly directed force to the platform comprise a cable having one end secured to the platform and the other end to a weight, the cable being led over a pulley which is arranged on the structure at a level above the highest position of the platform relatively to the vessel.
  • the means for applying an upwardly directed force to the platform comprise a cylinder arranged on the structure, a piston arranged in the cylinder, a connection between the piston and the platform, and fluid under pressure in the cylinder.
  • the system for keeping the pressure in the cylinder constant comprises a pressure tank containing gas and having a volume which is large relative to the volume of the cylinder, and a fluid connection between the cylinder and the pressure tank.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Supports For Pipes And Cables (AREA)
US578831A 1965-10-19 1966-09-12 Method and apparatus for carrying out operations on a well under water Expired - Lifetime US3421581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB44242/65A GB1077284A (en) 1965-10-19 1965-10-19 Method and apparatus for carrying out operations on a well under water

Publications (1)

Publication Number Publication Date
US3421581A true US3421581A (en) 1969-01-14

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US578831A Expired - Lifetime US3421581A (en) 1965-10-19 1966-09-12 Method and apparatus for carrying out operations on a well under water

Country Status (7)

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US (1) US3421581A (US20100012521A1-20100121-C00001.png)
BE (1) BE688319A (US20100012521A1-20100121-C00001.png)
DK (1) DK111612B (US20100012521A1-20100121-C00001.png)
ES (1) ES332343A1 (US20100012521A1-20100121-C00001.png)
GB (1) GB1077284A (US20100012521A1-20100121-C00001.png)
NL (1) NL153296B (US20100012521A1-20100121-C00001.png)
NO (1) NO123422B (US20100012521A1-20100121-C00001.png)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502143A (en) * 1968-05-29 1970-03-24 Shell Oil Co Marine riser support system
US3508409A (en) * 1967-12-26 1970-04-28 Neil H Cargile Jr Method and apparatus for handling tubular members at offshore locations
US3650323A (en) * 1970-03-13 1972-03-21 Exxon Production Research Co Apparatus for offshore operations
US3718316A (en) * 1970-09-04 1973-02-27 Vetco Offshore Ind Inc Hydraulic-pneumatic weight control and compensating apparatus
US3739844A (en) * 1971-04-28 1973-06-19 Shell Oil Co Apparatus for carrying out underwater wellhead operations
US3918379A (en) * 1974-06-13 1975-11-11 Global Marine Inc Gimbal support system for deep ocean mining vessel
US3991837A (en) * 1973-05-18 1976-11-16 Joy Manufacturing Company Buoyant counterbalancing for drill string
US3998280A (en) * 1973-09-04 1976-12-21 Schlumberger Technology Corporation Wave motion compensating and drill string drive apparatus
US4176722A (en) * 1978-03-15 1979-12-04 Global Marine, Inc. Marine riser system with dual purpose lift and heave compensator mechanism
US4281716A (en) * 1979-08-13 1981-08-04 Standard Oil Company (Indiana) Flexible workover riser system
EP0945587A1 (en) * 1998-03-27 1999-09-29 Single Buoy Moorings Inc. Riser tensioning construction
WO1999050527A1 (en) * 1998-03-27 1999-10-07 Single Buoy Moorings Inc. Riser tensioning construction
US6470969B1 (en) 1999-09-09 2002-10-29 Moss Maritime As Arrangement on a floating device for overhauling offshore hydrocarbon wells
US20040134661A1 (en) * 2002-12-06 2004-07-15 Von Der Ohe Christian B. Riser-tensioning device balanced by horizontal force
US20050129464A1 (en) * 2003-12-15 2005-06-16 Moncus James D. Motion compensation system and method
US20050263288A1 (en) * 2002-11-20 2005-12-01 Moe Magne M Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production
US20070187108A1 (en) * 2006-02-15 2007-08-16 Shunfeng Zheng Offshore coiled tubing heave compensation control system
US20120018166A1 (en) * 2008-11-17 2012-01-26 Saipem S.P.A. Vessel For Operating On Underwater Wells And Working Methods Of Said Vessel
US20120160509A1 (en) * 2010-06-25 2012-06-28 Mjb Of Mississippi, Inc. Apparatus and method for isolating and securing an underwater oil wellhead and blowout preventer
CN103527146A (zh) * 2013-10-09 2014-01-22 中国海洋石油总公司 一种用于浮式钻井平台上的螺杆泵排液井口操作台
CN104196476A (zh) * 2014-08-28 2014-12-10 中国海洋石油总公司 悬挂式螺杆泵排液井口操作台
US20150096761A1 (en) * 2012-05-11 2015-04-09 Itrec B.V. Offshore vessel and method of operation of such an offshore vessel
CN104612964A (zh) * 2014-12-12 2015-05-13 中国海洋石油总公司 浅水浮式钻井平台螺杆泵安装方法
US9463963B2 (en) 2011-12-30 2016-10-11 National Oilwell Varco, L.P. Deep water knuckle boom crane

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK304285D0 (da) * 1985-07-03 1985-07-03 Atlas Ingeniorforretningen Lejekonstruktion og fartoej med en saadan lejekonstruktion
CN103867139B (zh) * 2014-02-26 2016-04-06 中国石油天然气股份有限公司 一种连续油管起下保护方法及装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2181641A (en) * 1938-08-15 1939-11-28 Harold C Hicks Rotary drilling machine and pipe tongs
US3110350A (en) * 1957-01-11 1963-11-12 Continental Oil Co Universal joint marine master bushing
US3177954A (en) * 1956-09-17 1965-04-13 William W Rand Subaqueous drilling apparatus
US3179179A (en) * 1961-10-16 1965-04-20 Richfield Oil Corp Off-shore drilling apparatus
US3195639A (en) * 1961-10-16 1965-07-20 Richfield Oil Corp Off-shore drilling and production apparatus
US3221817A (en) * 1962-09-13 1965-12-07 Shell Oil Co Marine conductor pipe assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2181641A (en) * 1938-08-15 1939-11-28 Harold C Hicks Rotary drilling machine and pipe tongs
US3177954A (en) * 1956-09-17 1965-04-13 William W Rand Subaqueous drilling apparatus
US3110350A (en) * 1957-01-11 1963-11-12 Continental Oil Co Universal joint marine master bushing
US3179179A (en) * 1961-10-16 1965-04-20 Richfield Oil Corp Off-shore drilling apparatus
US3195639A (en) * 1961-10-16 1965-07-20 Richfield Oil Corp Off-shore drilling and production apparatus
US3221817A (en) * 1962-09-13 1965-12-07 Shell Oil Co Marine conductor pipe assembly

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6789981B2 (en) 1908-09-09 2004-09-14 Single Buoy Moorings, Inc. Riser tensioning construction
US3508409A (en) * 1967-12-26 1970-04-28 Neil H Cargile Jr Method and apparatus for handling tubular members at offshore locations
US3502143A (en) * 1968-05-29 1970-03-24 Shell Oil Co Marine riser support system
US3650323A (en) * 1970-03-13 1972-03-21 Exxon Production Research Co Apparatus for offshore operations
US3718316A (en) * 1970-09-04 1973-02-27 Vetco Offshore Ind Inc Hydraulic-pneumatic weight control and compensating apparatus
US3739844A (en) * 1971-04-28 1973-06-19 Shell Oil Co Apparatus for carrying out underwater wellhead operations
US3991837A (en) * 1973-05-18 1976-11-16 Joy Manufacturing Company Buoyant counterbalancing for drill string
US3998280A (en) * 1973-09-04 1976-12-21 Schlumberger Technology Corporation Wave motion compensating and drill string drive apparatus
US3918379A (en) * 1974-06-13 1975-11-11 Global Marine Inc Gimbal support system for deep ocean mining vessel
US4176722A (en) * 1978-03-15 1979-12-04 Global Marine, Inc. Marine riser system with dual purpose lift and heave compensator mechanism
US4281716A (en) * 1979-08-13 1981-08-04 Standard Oil Company (Indiana) Flexible workover riser system
EP0945587A1 (en) * 1998-03-27 1999-09-29 Single Buoy Moorings Inc. Riser tensioning construction
WO1999050527A1 (en) * 1998-03-27 1999-10-07 Single Buoy Moorings Inc. Riser tensioning construction
EP1106779A3 (en) * 1998-03-27 2002-12-18 Single Buoy Moorings Inc. Riser tensioning construction
US6517291B1 (en) 1998-03-27 2003-02-11 Single Buoy Moorings Inc. Riser tensioning construction
US6470969B1 (en) 1999-09-09 2002-10-29 Moss Maritime As Arrangement on a floating device for overhauling offshore hydrocarbon wells
US7188677B2 (en) * 2002-11-20 2007-03-13 National Oilwell Norway As Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production
US20050263288A1 (en) * 2002-11-20 2005-12-01 Moe Magne M Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production
US20040134661A1 (en) * 2002-12-06 2004-07-15 Von Der Ohe Christian B. Riser-tensioning device balanced by horizontal force
WO2005061803A1 (en) * 2003-12-15 2005-07-07 Devin International, Inc. Motion composition system and method
US6929071B2 (en) * 2003-12-15 2005-08-16 Devin International, Inc. Motion compensation system and method
GB2424915A (en) * 2003-12-15 2006-10-11 Devin International Inc Motion compensation system and method
US20050129464A1 (en) * 2003-12-15 2005-06-16 Moncus James D. Motion compensation system and method
GB2424915B (en) * 2003-12-15 2007-05-16 Devin International Inc Motion compensation system and method
US20070187108A1 (en) * 2006-02-15 2007-08-16 Shunfeng Zheng Offshore coiled tubing heave compensation control system
US7281585B2 (en) * 2006-02-15 2007-10-16 Schlumberger Technology Corp. Offshore coiled tubing heave compensation control system
US20120018166A1 (en) * 2008-11-17 2012-01-26 Saipem S.P.A. Vessel For Operating On Underwater Wells And Working Methods Of Said Vessel
US9051783B2 (en) * 2008-11-17 2015-06-09 Saipem S.P.A. Vessel for operating on underwater wells and working methods of said vessel
US20120160509A1 (en) * 2010-06-25 2012-06-28 Mjb Of Mississippi, Inc. Apparatus and method for isolating and securing an underwater oil wellhead and blowout preventer
US8887812B2 (en) * 2010-06-25 2014-11-18 Safestack Technology L.L.C. Apparatus and method for isolating and securing an underwater oil wellhead and blowout preventer
US9650874B2 (en) 2010-06-25 2017-05-16 Safestack Technology L.L.C. Apparatus and method for isolating and securing an underwater oil wellhead and blowout preventer
US9463963B2 (en) 2011-12-30 2016-10-11 National Oilwell Varco, L.P. Deep water knuckle boom crane
US9266586B2 (en) * 2012-05-11 2016-02-23 Itrec B.V. Offshore vessel and method of operation of such an offshore vessel
US20150096761A1 (en) * 2012-05-11 2015-04-09 Itrec B.V. Offshore vessel and method of operation of such an offshore vessel
CN103527146A (zh) * 2013-10-09 2014-01-22 中国海洋石油总公司 一种用于浮式钻井平台上的螺杆泵排液井口操作台
CN104196476B (zh) * 2014-08-28 2016-09-07 中国海洋石油总公司 悬挂式螺杆泵排液井口操作台
CN104196476A (zh) * 2014-08-28 2014-12-10 中国海洋石油总公司 悬挂式螺杆泵排液井口操作台
CN104612964A (zh) * 2014-12-12 2015-05-13 中国海洋石油总公司 浅水浮式钻井平台螺杆泵安装方法

Also Published As

Publication number Publication date
NL6614559A (US20100012521A1-20100121-C00001.png) 1967-04-20
GB1077284A (en) 1967-07-26
ES332343A1 (es) 1967-11-01
NL153296B (nl) 1977-05-16
NO123422B (US20100012521A1-20100121-C00001.png) 1971-11-15
DK111612B (da) 1968-09-23
BE688319A (US20100012521A1-20100121-C00001.png) 1967-04-17

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