US3346045A - Operation in a submarine well - Google Patents

Operation in a submarine well Download PDF

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Publication number
US3346045A
US3346045A US457310A US45731065A US3346045A US 3346045 A US3346045 A US 3346045A US 457310 A US457310 A US 457310A US 45731065 A US45731065 A US 45731065A US 3346045 A US3346045 A US 3346045A
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United States
Prior art keywords
well
conduit
pipe
pipe string
piston
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.)
Expired - Lifetime
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US457310A
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English (en)
Inventor
Richard P Knapp
Jr Jerome D Goodrich
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.)
ExxonMobil Upstream Research Co
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Exxon Production Research Co
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Filing date
Publication date
Application filed by Exxon Production Research Co filed Critical Exxon Production Research Co
Priority to US457310A priority Critical patent/US3346045A/en
Priority to GB12024/66A priority patent/GB1132503A/en
Priority to NL6605078A priority patent/NL6605078A/xx
Application granted granted Critical
Publication of US3346045A publication Critical patent/US3346045A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations

Definitions

  • ABSTRACT OF THE DISCLOSURE Tubing which is coiled on a spool or reel is propelled into a well by inserting the free end of the tubing, which is provided with a piston, into the well and then imposing fluid pressure against the piston on the free end, thereby propelling the tubing into the well, the tubing extending from a selected point in the well to an accessible location at earth or water surface, if the well is an underwater well.
  • the present invention is directed to operation in a well drilled to penetrate hydrocarbon-productive subsurface formations. More particularly, the invention is concerned with operations in a submarine well drilled to penetrate hydrocarbon-productive strata. In its more specific aspects, the invention is concerned with well operations wherein a well is completed on bottom in a body of water.
  • the present invention may be briefly described as a method of conducting operations in a well which may be completed on water bottom and having a conduit forming a passageway extending into said well and extending at least to an accessible point remote from said well of which at least a portion of the conduit is curved.
  • the invention is broadly directed to operations in any well, onshore or offshore.
  • the pipe string is then propelled into the conduit by exerting fluid pressure against the pipe string.
  • the present invention is also concerned with apparatus for conducting operations in a well wherein the well has a conduit forming a passageway extending from a remote accessible point to a selected point in the well with a por tion of the conduit being curved.
  • the apparatus comprises a continuous length of pipe having a free end and adapted to extend in the conduit from the accessible point to a selected point.
  • a piston is provided on the free end of the pipe and means are provided for exerting fluid pressure against the piston whereby the pipe is propelled through the conduit by the fluid pressure.
  • the piston may be a rigid piston or it may be a deformable piston. Where the piston is deformable, it may be constructed of natural or synthetic rubber or other suitable deformable material.
  • the piston may be constructed of flexible, metallic leaves which may flex or may slidably move one upon the other.
  • the pipe string having the piston arranged on it may suitably be provided with buoyancy by attaching to the pipe string a sutficient quantity of a material having a density less than that of the fluid in the conduit.
  • buoyancy may be provided by making the pipe string with a double wall spaced apart with an annular void space.
  • FIGS. 1 and 1A illustrate a well completed on bottom in a body of water, showing the curved conduit and the running in of the pipe string;
  • numeral 11 identifies a body of water in which a well generally indicated by the numeral 12 is completed on water bottom 13.
  • a well casing 14, which is cemented in place by usual techniques, is arranged in the well 12, and attached to the well casing 14 by flange members 15 is an underwater Christmas tree generally indicated by the numeral 16.
  • the Christmas tree 16 is suitably closed on its open end by flanged member 17. It will be noted that the well 12 is completed substantially below water level 18.
  • a plurality of flowlines 19 and 20 which in turn connect respectively to tubing or pipe strings 22 and 23 which extend into the well to one or more hydrocarbon-productive strata (not shown) from which oil and/ or gas may be obtained.
  • tubing strings 22 and 23 may suitably be interconnected at one or more points intermediate their ends for workover operations and the like.
  • Flowlines 19 and 20 extend to a remote platform or support 24 which may be a floating platform supported in the body of water 11 by buoyancy means 25 or the platform 24 may be supported by the bottom 13. Platform or support 24 may be 'located onshore if desired.
  • the flowline 20 is suitably closed by a removable cover 20a while the flowline 19 is suitably closed by a removable stufling box 26 into which extends a continuous length of pipe string 27 which is unreeled from a reel 28.
  • the reel 28 connects by a conduit 29 to a tank 30 which in turn connects by conduit 31 to pump 32, which connects by line 33 to the flowline 19.
  • the continuous length of pipe 27 is provided with a piston member 34 (see FIG. 1A) on its free end 35, but the piston may be arranged at another point on the pipe 27 rather than on the free end.
  • the continuous length of pipe 27 is constructed of substantially rigid, small diameter pipe.
  • substantially rigid is meant that the pipe will support its own Weight; but, this does not mean that the pipe does not have substantial flexibility which allows it to traverse bends and curves in the flowline 19.
  • the reel 23 may be provided with a device for straightening the pipe 27 as it is fed olf or on to the reel, either into or out of the flowline 19.
  • Such straightening devices are well known in the art.
  • the tubing 22 is shown in a vertical position as in the well 12 with the pipe string 27 provided with a deformable piston 34. Fluid pressure is exerted against the piston 34, which causes the continuous pipe to move through the tubing 22 with fluid in the tubing 22 being displaced upwardly through the pipe 27.
  • the tubing 22 is shown with a sand bridge 36, and it is desirable to wash out the sand bridge.
  • fluid flowed down into the pipe 27 is directed against the bridge 36 under sufficient pressure to deform the piston 34 and allow fluid to be returned up the annulus 37 as indicated by the arrows.
  • pipe 27 has arranged on the free 3 end 35 thereof, a piston 34a which is constructed of rigid material.
  • the piston 34:: is provided with a plurality of passageways 38, each having a check valve 39 arranged therein to allow fluid in the tubing 22 to be displaced upwardly through the passageway 38 and check valve 39.
  • a cross section of the pipe 27 is shown having arranged around it a low density material 40 to provide buoyancy to the pipe 27 and also to serve as an antifriction means.
  • the low density material may 'suitably be a polyolefin, such as polypropylene, having a density lower than that of the pipe 27.
  • the low density material provides buoyancy to the pipe 27 and also serves as an anti-friction device.
  • the low density material may be wrapped around the pipe 27 or it may be formed around the pipe 27 or otherwise attached thereto.
  • the buoyancy means 40 may be applied over the entire length of the pipe, or if desired, be placed along the pipe at spaced apart intervals.
  • the pipe 27 is shown in the flowline 19 with a deformable piston 34.
  • centralizers such as 41 are arranged on the pipe 27 to lessen friction.
  • a plurality of spaced-apart centralizers may be employed.
  • the pipe 27a has arranged thereon a deformable piston 34.
  • the pipe 27a has spaced-apart double walls 42 which provide buoyancy to the pipe 27.
  • the double Wall construction may be continuous or in spaced-apart relation so as to form separate pontoons along the length of the pipe string as shown in FIG. 7A.
  • the continuous pipe string has its free end inserted in the flowline 19. Thereafter, fluid is pumped through line 33 by pump 32 from tank 30 against piston 34. This causes the pipe 27 to be propelled into the flowline 19 around the curves or bends, and thence downwardly into the tubing 22. The amount of pressure employed against piston 34 is suflicient to propel the pipe 27 into the well, as shown, and to unreel the pipe 27 from the reel 28. Fluid in the flowline 19 and tubing 22 is displaced up the fluid passageway 43 and then back through conduit 29 into tank 36 for recirculation.
  • the fluid when operations are conducted such as :shown in FIG. 3, the fluid will be displaced up the annulus 37 and may be discharged from the flowline 19. In this instance, fluid would be flowed down through :the pipeline 27 and up the annulus 37, which would necessitate reversing the pump 32 or providing a separate pump.
  • the present invention is quite advantageous and use- :ful in that wells may be completed and serviced using a continuous tubing string which may be suitably arranged on a reel and propelled into a well by fluid pressure.
  • a continuous tubing .string may be propelled into a well by fluid pressure.
  • the continuous pipe string When the continuous pipe string is to be removed from the well, power may be applied to the reel 28 to withdraw the continuous pipe string from the well.
  • the continuous pipe string Once the continuous pipe string is run into the Well, it may be used for sand washing, as has been described, circulation, stimulation, cementing, acidizing, or for performing other completion or workover operations by circulating fluid or liquid up or down the continuous pipe string, or by reverse circulation.
  • the continuous pipe string may be used for continuous production of fluids such as oil or gas from the well.
  • fluids such as liquids or gases may flow through the continuous pipe string or through the annulus defined by the continuous pipe string and flowline.
  • the tubing string or flowline forms a continuous conduit having a fluid passageway therethrough.
  • tubing strings 22 and 23 may be interconnected at the well head or intermediate their ends with one string being used for servicing operations and the other for producing operations.
  • the invention has been described and illustrated by reference to submarine well operations. However, in its broader aspects, the invention is applicable to operations in any well wherein a continuous pipe string is to be run therethrough since, in accordance with the present invention, a continuous pipe string is propelled into a well solely by fluid pressure.
  • a continuous pipe string is propelled into a well solely by fluid pressure.
  • This is quite advantageous and useful in that by exerting fluid pressure to propel the continuous pipe string into the well, the continuous pipe string is maintained under tension, which serves to prevent kinking or corkscrewing of the continuous pipe string as it is being run into the Well.
  • the present invention is broadly applicable to running a continuous pipe string in a well by exerting fluid pressure preferably against the free end of the continuous pipe string.
  • a method for conducting operations in a well having a conduit forming a passageway extending into said well which comprises inserting into said conduit from a reel a continuous pipe string having a free end and a length suflicient to reach from said reel to a selected point in said conduit, and then propelling said pipe string through said conduit by fluid pressure exerted against said free end.
  • a method for conducting operations in a well having a conduit forming a passageway extending into said well and extending at least to an accessible point which comprises inserting into said conduit from a reel a continuous pipe string having a free end and having a length sufiicient to reach at least from said reel at said accessible point to a selected point in said conduit, and then propelling said pipe string through said conduit by fluid pressure exerted against said free end.
  • a method for conducting operations in a submarine well completed on water bottom and having a conduit forming a passageway extending into said well and extending at least to an accessible point remote from said well, at least a portion of said conduit being curved which comprises inserting into said conduit at said accessible point from a reel a continuous pipe string having a free end and a longth sufficient to reach at least from said reel at said accessible point to a selected point in said conduit, propelling said pipe string through said conduit by fluid pressure exerted against said free end, and flowing fluid through said pipe string.
  • a method for conducting operations in -a submarine well completed on water bottom and having a conduit forming a fluid passageway extending into said well and extending at least to an accessible point remote from said well, at least a portion of said conduit being curved which comprises inserting into said conduit at said accessible point from a reel a continuous buoyant pipe string having a free end and having a length sutficient to reach at least from said reel at said accessible point to a selected point in said conduit and then propelling said pipe string through said conduit by fluid pressure exerted against said free end.
  • buoyancy is provided to said pipe string by attaching thereto a material having a density less than that of the pipe string. 7
  • buoyancy is provided to said pipe string by forming an annular wall spaced from the outer wall of said pipestring.
  • a method for conducting operations in a submarine well completed on water bottom and having a conduit forming a fluid passageway extending into said well and extending at least to an accessible point remote from said well, at least a portion of said conduit being curved which comprises inserting into said conduit at said accessible point from a reel a continuous pipe string having a free end and provided with a piston on said free end and having a length sufficient to reach at least from said reel at said accessible point to a selected point in said conduit, and then propelling said pipe string through said conduit by pumping fluid into said conduit against said piston under a suflicient pressure.
  • a method for conducting operations in a well which comprises inserting into said well a continuous pipe string having a free end and a length suflicient to reach from a reel to a selected point in said well and then propelling said pipe string into said well by fluid pressure exerted against said free end.
  • a method in accordance with claim 19 in which a piston is arranged on said pipe string and said fluid pressure is exerted against the piston.

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  • 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)
  • Earth Drilling (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
US457310A 1965-05-20 1965-05-20 Operation in a submarine well Expired - Lifetime US3346045A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US457310A US3346045A (en) 1965-05-20 1965-05-20 Operation in a submarine well
GB12024/66A GB1132503A (en) 1965-05-20 1966-03-18 Operations in a well
NL6605078A NL6605078A (en, 2012) 1965-05-20 1966-04-15

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US457310A US3346045A (en) 1965-05-20 1965-05-20 Operation in a submarine well

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GB (1) GB1132503A (en, 2012)
NL (1) NL6605078A (en, 2012)

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3394760A (en) * 1967-03-20 1968-07-30 Exxon Production Research Co Operations in submarine and other wells
US3401749A (en) * 1966-09-06 1968-09-17 Dresser Ind Method and apparatus for moving wire-line tools through deviated well bores
US3422895A (en) * 1967-09-20 1969-01-21 Exxon Production Research Co Well servicing
US3464496A (en) * 1968-09-30 1969-09-02 Exxon Production Research Co Running of elongated pipe in a well
US3467196A (en) * 1966-07-18 1969-09-16 Chevron Res Method for running tubing using fluid pressure
US3506068A (en) * 1967-04-20 1970-04-14 Otis Eng Corp Pumpable impeller pistons for flow conductors
US3525401A (en) * 1968-08-12 1970-08-25 Exxon Production Research Co Pumpable plastic pistons and their use
US3595312A (en) * 1969-09-18 1971-07-27 Exxon Production Research Co Method and apparatus for installing offshore flow lines
US3675718A (en) * 1970-09-11 1972-07-11 Exxon Production Research Co Conducting operations in a well through a normally closed valve
US3724224A (en) * 1971-06-07 1973-04-03 Exxon Production Research Co Method for installing double-walled pipelines
US3732925A (en) * 1972-01-18 1973-05-15 Exxon Production Research Co Apparatus for conducting operations in a well through a normally closed valve
US3791447A (en) * 1971-04-28 1974-02-12 A Smith Well methods for sand bridge removal using small diameter tubing
US4125162A (en) * 1977-05-13 1978-11-14 Otis Engineering Corporation Well flow system and method
US4185809A (en) * 1978-01-27 1980-01-29 Nelson Jonnes Method and apparatus for pulling lightweight cable
US4223737A (en) * 1979-03-26 1980-09-23 Reilly Dale O Method for well operations
US4279544A (en) * 1977-01-11 1981-07-21 Compagnie Francaise Des Petroles Helical apparatus for coupling submerged pipes
EP0257744A3 (en) * 1986-07-01 1989-07-12 Framo Developments (U.K.) Limited Drilling system
FR2667351A1 (fr) * 1990-09-27 1992-04-03 Total Petroles Dispositif pour pousser des tubages dans un puits de forage.
US5234198A (en) * 1991-06-25 1993-08-10 At&T Bell Laboratories Apparatus for installing optical fiber in conduit
US5287741A (en) * 1992-08-31 1994-02-22 Halliburton Company Methods of perforating and testing wells using coiled tubing
US5429194A (en) * 1994-04-29 1995-07-04 Western Atlas International, Inc. Method for inserting a wireline inside coiled tubing
US5503014A (en) * 1994-07-28 1996-04-02 Schlumberger Technology Corporation Method and apparatus for testing wells using dual coiled tubing
US5568837A (en) * 1995-06-28 1996-10-29 Funk; Kelly Method of inserting tubing into live wells
US5671811A (en) * 1995-01-18 1997-09-30 Head; Philip Tube assembly for servicing a well head and having an inner coil tubing injected into an outer coiled tubing
US5794703A (en) * 1996-07-03 1998-08-18 Ctes, L.C. Wellbore tractor and method of moving an item through a wellbore
US6006839A (en) * 1996-10-02 1999-12-28 Stewart & Stevenson, Inc. Pressurized flexible conduit injection system
US6148921A (en) * 1996-05-03 2000-11-21 Coflexip Oil extracting installation incorporating manifold support mounting plates, and plate
WO2001073261A3 (en) * 2000-03-27 2002-02-28 Rockwater Ltd Riser with retrievable internal services
EP1253283A1 (en) * 2001-04-23 2002-10-30 Shell Internationale Researchmaatschappij B.V. Method of installing a wellbore tubular
US6497286B1 (en) * 1998-03-27 2002-12-24 Cooper Cameron Corporation Method and apparatus for drilling a plurality of offshore underwater wells
WO2003095792A1 (en) * 2002-05-07 2003-11-20 Agr Subsea As A method and a device for removing a hydrate plug
US6702025B2 (en) 2002-02-11 2004-03-09 Halliburton Energy Services, Inc. Hydraulic control assembly for actuating a hydraulically controllable downhole device and method for use of same
US20040194963A1 (en) * 2003-03-05 2004-10-07 Torres Carlos A. Subsea well workover system and method
WO2006001706A1 (en) * 2004-06-24 2006-01-05 Statoil Asa Method for hydrate plug removal
WO2006001707A1 (en) * 2004-06-24 2006-01-05 Statoil Asa Thruster pig
USRE39509E1 (en) * 1993-02-04 2007-03-13 Specialty Rental Tools & Supply, Lp Top entry sub arrangement
WO2007076609A1 (en) * 2006-01-06 2007-07-12 Trican Well Service Ltd. Pressure containment devices and methods of using same
US20090145610A1 (en) * 2006-01-12 2009-06-11 Joseph Varkey Methods of Using Enhanced Wellbore Electrical Cables
US20090194296A1 (en) * 2008-02-01 2009-08-06 Peter Gillan Extended Length Cable Assembly for a Hydrocarbon Well Application
US7650944B1 (en) * 2003-07-11 2010-01-26 Weatherford/Lamb, Inc. Vessel for well intervention
US7845412B2 (en) 2007-02-06 2010-12-07 Schlumberger Technology Corporation Pressure control with compliant guide
US20120160506A1 (en) * 2010-10-28 2012-06-28 Gulfstream Services, Inc. Method and apparatus for evacuating hydrocarbons from a distressed well
US9027657B2 (en) 2009-09-22 2015-05-12 Schlumberger Technology Corporation Wireline cable for use with downhole tractor assemblies
US9412492B2 (en) 2009-04-17 2016-08-09 Schlumberger Technology Corporation Torque-balanced, gas-sealed wireline cables
US9534463B2 (en) 2012-10-09 2017-01-03 W. Lynn Frazier Pump down tool
US11387014B2 (en) 2009-04-17 2022-07-12 Schlumberger Technology Corporation Torque-balanced, gas-sealed wireline cables
US12163394B2 (en) 2009-04-17 2024-12-10 Schlumberger Technology Corporation Reduced torque wireline cable
US12321028B2 (en) 2021-06-10 2025-06-03 Schlumberger Technology Corporation Electro-optical wireline cables

Families Citing this family (4)

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US6315498B1 (en) * 1997-11-21 2001-11-13 Superior Energy Services, Llc Thruster pig apparatus for injecting tubing down pipelines
US6651744B1 (en) 1997-11-21 2003-11-25 Superior Services, Llc Bi-directional thruster pig apparatus and method of utilizing same
WO2000071851A1 (en) * 1999-05-19 2000-11-30 Kelly Funk Method of and apparatus for inserting tubing into a well bore
RU2239728C1 (ru) * 2003-11-20 2004-11-10 Зиновий Дмитриевич Хоминец Насосно-эжекторная скважинная струйная установка для очистки забоя скважин от песчаных пробок и способ ее работы

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US2567009A (en) * 1948-06-24 1951-09-04 Shell Dev Equipment for inserting small flexible tubing into high-pressure wells
US2805718A (en) * 1954-10-20 1957-09-10 Exxon Research Engineering Co Method for running a tubular member in a well
US2810442A (en) * 1955-07-25 1957-10-22 Exxon Research Engineering Co Flexible tubular extension member for wells
US3022822A (en) * 1960-04-11 1962-02-27 Jersey Prod Res Co Method of manipulating well tools
US3070167A (en) * 1959-07-30 1962-12-25 Jersey Prod Res Co Device for pumping tools into wells
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US2548616A (en) * 1948-02-02 1951-04-10 Priestman George Dawson Well drilling
US2567009A (en) * 1948-06-24 1951-09-04 Shell Dev Equipment for inserting small flexible tubing into high-pressure wells
US2805718A (en) * 1954-10-20 1957-09-10 Exxon Research Engineering Co Method for running a tubular member in a well
US2810442A (en) * 1955-07-25 1957-10-22 Exxon Research Engineering Co Flexible tubular extension member for wells
US3070167A (en) * 1959-07-30 1962-12-25 Jersey Prod Res Co Device for pumping tools into wells
US3022822A (en) * 1960-04-11 1962-02-27 Jersey Prod Res Co Method of manipulating well tools
US3116793A (en) * 1961-03-29 1964-01-07 Jersey Prod Res Co Completion and working over of wells

Cited By (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3467196A (en) * 1966-07-18 1969-09-16 Chevron Res Method for running tubing using fluid pressure
US3401749A (en) * 1966-09-06 1968-09-17 Dresser Ind Method and apparatus for moving wire-line tools through deviated well bores
US3394760A (en) * 1967-03-20 1968-07-30 Exxon Production Research Co Operations in submarine and other wells
US3506068A (en) * 1967-04-20 1970-04-14 Otis Eng Corp Pumpable impeller pistons for flow conductors
US3422895A (en) * 1967-09-20 1969-01-21 Exxon Production Research Co Well servicing
US3525401A (en) * 1968-08-12 1970-08-25 Exxon Production Research Co Pumpable plastic pistons and their use
US3464496A (en) * 1968-09-30 1969-09-02 Exxon Production Research Co Running of elongated pipe in a well
US3595312A (en) * 1969-09-18 1971-07-27 Exxon Production Research Co Method and apparatus for installing offshore flow lines
US3675718A (en) * 1970-09-11 1972-07-11 Exxon Production Research Co Conducting operations in a well through a normally closed valve
US3791447A (en) * 1971-04-28 1974-02-12 A Smith Well methods for sand bridge removal using small diameter tubing
US3724224A (en) * 1971-06-07 1973-04-03 Exxon Production Research Co Method for installing double-walled pipelines
US3732925A (en) * 1972-01-18 1973-05-15 Exxon Production Research Co Apparatus for conducting operations in a well through a normally closed valve
US4279544A (en) * 1977-01-11 1981-07-21 Compagnie Francaise Des Petroles Helical apparatus for coupling submerged pipes
US4125162A (en) * 1977-05-13 1978-11-14 Otis Engineering Corporation Well flow system and method
US4185809A (en) * 1978-01-27 1980-01-29 Nelson Jonnes Method and apparatus for pulling lightweight cable
US4223737A (en) * 1979-03-26 1980-09-23 Reilly Dale O Method for well operations
EP0257744A3 (en) * 1986-07-01 1989-07-12 Framo Developments (U.K.) Limited Drilling system
US5060737A (en) * 1986-07-01 1991-10-29 Framo Developments (Uk) Limited Drilling system
FR2667351A1 (fr) * 1990-09-27 1992-04-03 Total Petroles Dispositif pour pousser des tubages dans un puits de forage.
US5234198A (en) * 1991-06-25 1993-08-10 At&T Bell Laboratories Apparatus for installing optical fiber in conduit
US5287741A (en) * 1992-08-31 1994-02-22 Halliburton Company Methods of perforating and testing wells using coiled tubing
US5353875A (en) * 1992-08-31 1994-10-11 Halliburton Company Methods of perforating and testing wells using coiled tubing
USRE39509E1 (en) * 1993-02-04 2007-03-13 Specialty Rental Tools & Supply, Lp Top entry sub arrangement
US5429194A (en) * 1994-04-29 1995-07-04 Western Atlas International, Inc. Method for inserting a wireline inside coiled tubing
US5503014A (en) * 1994-07-28 1996-04-02 Schlumberger Technology Corporation Method and apparatus for testing wells using dual coiled tubing
US5671811A (en) * 1995-01-18 1997-09-30 Head; Philip Tube assembly for servicing a well head and having an inner coil tubing injected into an outer coiled tubing
US5568837A (en) * 1995-06-28 1996-10-29 Funk; Kelly Method of inserting tubing into live wells
US6148921A (en) * 1996-05-03 2000-11-21 Coflexip Oil extracting installation incorporating manifold support mounting plates, and plate
US5794703A (en) * 1996-07-03 1998-08-18 Ctes, L.C. Wellbore tractor and method of moving an item through a wellbore
US6082461A (en) * 1996-07-03 2000-07-04 Ctes, L.C. Bore tractor system
US6089323A (en) * 1996-07-03 2000-07-18 Ctes, L.C. Tractor system
US6006839A (en) * 1996-10-02 1999-12-28 Stewart & Stevenson, Inc. Pressurized flexible conduit injection system
US6497286B1 (en) * 1998-03-27 2002-12-24 Cooper Cameron Corporation Method and apparatus for drilling a plurality of offshore underwater wells
WO2001073261A3 (en) * 2000-03-27 2002-02-28 Rockwater Ltd Riser with retrievable internal services
EP1253283A1 (en) * 2001-04-23 2002-10-30 Shell Internationale Researchmaatschappij B.V. Method of installing a wellbore tubular
US6702025B2 (en) 2002-02-11 2004-03-09 Halliburton Energy Services, Inc. Hydraulic control assembly for actuating a hydraulically controllable downhole device and method for use of same
US20050217855A1 (en) * 2002-05-07 2005-10-06 Agr Subsea As Method and a device for removing a hydrate plug
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GB1132503A (en) 1968-11-06
NL6605078A (en, 2012) 1966-11-21

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