US3330340A - Marine conductor pipe assembly - Google Patents

Marine conductor pipe assembly Download PDF

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Publication number
US3330340A
US3330340A US401488A US40148864A US3330340A US 3330340 A US3330340 A US 3330340A US 401488 A US401488 A US 401488A US 40148864 A US40148864 A US 40148864A US 3330340 A US3330340 A US 3330340A
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United States
Prior art keywords
marine conductor
drilling
pipe
marine
water
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
Application number
US401488A
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English (en)
Inventor
William J Hayes
Robert C Visser
Glenn D Johnson
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.)
Shell USA Inc
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Shell Oil Co
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
Priority to US401488A priority Critical patent/US3330340A/en
Application filed by Shell Oil Co filed Critical Shell Oil Co
Priority to NO159942A priority patent/NO115467B/no
Priority to GB42023/65A priority patent/GB1060818A/en
Priority to DK508765AA priority patent/DK112231B/da
Priority to ES0318104A priority patent/ES318104A1/es
Priority to BE670490D priority patent/BE670490A/xx
Priority to DES99925A priority patent/DE1262936B/de
Priority to NL6512828A priority patent/NL6512828A/xx
Application granted granted Critical
Publication of US3330340A publication Critical patent/US3330340A/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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01—Risers
    • E21B17/012—Risers with buoyancy elements
    • 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
    • E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations

Definitions

  • FIG.2C MARINE CONDUCTOR PIPE ASSEMBLY Filed Oct. 5, 1964 3 Sheets-Sheet 2 FIG.2C
  • This invention relates to apparatus for use in drilling, completing and working-over operations in oil and gas wells at ofishore locations, and pertains more particularly to apparatus adapted to provide full-flow fluid communication between a vessel at the surface of a body of water and a wellhead assembly positioned on the ocean floor or at a substantial depth below the surface of the water.
  • Deep water wells are generally drilled from vessels of varying designs commonly known as drilling barges, vessels or platforms. Deep water wells are generally drilled by one of two methods. In one method the string of drill pipe extends downwardly from the drilling vessel to the drilling wellhead assembly, on the ocean floor, which is closed at the top by a circulation head with a flexible hose running from the circulation head back to the surface and to the drilling vessel so that drilling fluid may be circulated down the drill pipe, through the drill bit, and thence upwardly along the outside of the drill pipe, out the circulation head and up the flexible hose to the vessel again.
  • a large-diameter pipe known as a marine conductor pipe is put together and arranged to extend from the drilling Wellhead assembly near the ocean floor to the vessel on the surface of the Water.
  • the drill pipe rotates within the conductor pipe with drilling fluid being circulated down through the drill pipe, through the bit at the bottom thereof, up the outside of the drill pipe and thence upwardly through the annular space between the conductor pipe and the drill pipe, returning to the barge in the conventional way.
  • the present invention is concerned with apparatus to be used in the second method described hereinabove.
  • One of the problems in drilling underwater wells from floating vessels is that of providing suitable means for suspending and/or supporting a large-diameter marine conductor pipe and auxiliary smaller-diameter equipment or well-control pipes in the water beneath the drilling vessel while the lower ends thereof are secured to a wellhead assembly positioned near the ocean floor.
  • a further problem is encountered at times when drilling at offshore locations due to the possibility of a violent storm which necessitates moving the drilling vessel away from the well being drilled or having it moved away by abnormal 3,333,346 Patented July 11, 1967 wind and wave action.
  • a further object of the present invention is to provide a marine conduct-or pipe assembly of rugged design which can be built in sections small enough to be handled easily on a drilling vessel while being provided with means for connecting the various sections together easily and quickly.
  • Another object of the present invention is to provide a sectionalized marine conductor pipe assembly wherein all of the sections are substantially and individually buoyant so that the major portion of all of the marine conductor pipe is substantially self-supporting within a body of water.
  • Still another object of the present invention is to provide a sectionalized buoyant marine conductor pipe assembly provided with means for accommodating one or more smaller-diameter well control or equipment control pipelines which are protected by the conductor pipe assembly while extending from the vessel down to the equipment at the ocean floor.
  • a further object of the present invention is to provide means on the sectionalized marine conductor pipe assembly whereby smaller-diameter auxiliary pipes extending from the vessel to the drilling equipment at the ocean floor may be readily removed or replaced in case of emergency or damage without pulling the marine conductor pipe assembly back to the vessel.
  • FIGURE 1 is a diagrammatic view taken in longitudinal projection illustrating a floating drilling vessel positioned at the surface of the ocean with an underwater wellhead assembly positioned on the ocean floor;
  • FIGURES 2A, 2B and 2C are longitudinal views adapted to be arranged end-to-end to show enlarged detail sections of the marine conductor pipe assembly of the present invention as it is positioned on a wellhead at the ocean floor;
  • FIGURE 3 is a view in enlarged detail illustrating the upper end of the marine conductor pipe of FIGURE 2A as well as the upper end of a bundle of hydraulic control cables positioned alongside the marine conductor p
  • FIGURE 4 is a longitudinal view taken in partial cross section illustrating interconnecting ends of two sections of the marine conductor pipe of the present invention together with smallerdiameter auxiliary pipes arranged in guide tubes on either side of the marine conductor p p
  • FIGURE 5 is a partial longitudinal view taken at to the view shown in FIGURE 4 so as to illustrate auxiliary connections between two sections of the marine conductor pipe assembly;
  • FIGURE 6 is an enlarged cross-sectional longitudinal view showing in enlarged detail the manner in which an auxiliary smaller-diameter pipeline is coupled to a drilling wellhead assembly in communication with a suitable conduit thereto;
  • FIGURE 7 is a longitudinal view taken in partial cross section of a sealing and connector unit between the marine conductor pipe assembly and the drilling wellhead assembly.
  • a drilling vessel, barge or platform is generally represented by numeral 11.
  • the drilling vessel is of any suitable type preferably,
  • Equipment of this type may be used when carrying on well drilling operations in water depths vary located or extend in from one edge. However, drilling operations may be carried out over the deck of the vessel which is cantilevered out over one end. Additionally, it is to be understood that the equipment of the present invention may be also used when drilling a well from any suitable operational base positioned above the surface of the water, such for example, as from a drilling barge having legs extending to the ocean floor or from a platform permanently positioned on the ocean floor.
  • FIGURES l and 2C A typical underwater wellhead structure is illustrated in FIGURES l and 2C as comprising a base member 21 which is positioned on the ocean floor 13 and is fixedly secured to a conductor pipe or a large-diameter well casing 22 by means of a ball-and-socket joint 23.
  • a drilling wellhead assembly is removably secured to the top of a foundation pile 24 which in turn is secured to the top of the ball-and-socket joint 23.
  • the drilling wellhead is secured to the top of a 'two-piece'casinghead 25-26 which in turn is mounted at the top of the foundation pile 24.
  • the combined casing 22, foundation pile 24 and casinghead 25-26 form a continuous tubular member or pipeextending up from the ocean floor through which drilling operations are conducted.
  • the drilling wellhead assembly illustrated includes a detachable wellhead connector or drilling bonnet 27 of any type well known to the art. Fixedly secured above the wellhead connector 27 is a ram-type blowout preventer :unit 28, a bag-type blowout preventer unit 29, a flexible joint 30, a remotely-operable quick-disconnect coupling and sealing apparatus 31, and a sectionalized marine conductor pipe assembly 32 (FIGURE 1) extending to the vessel 11 at the surface.
  • a ram-type blowout preventer :unit 28 Fixedly secured above the wellhead connector 27 is a ram-type blowout preventer :unit 28, a bag-type blowout preventer unit 29, a flexible joint 30, a remotely-operable quick-disconnect coupling and sealing apparatus 31, and a sectionalized marine conductor pipe assembly 32 (FIGURE 1) extending to the vessel 11 at the surface.
  • the marine conductor pipe an enlarged telescoping section 34 into which the upper 7 end section '35 of the marine conductor pipe is arranged for sliding vertical movement, thus compensating for rise and fall of the vessel with wave action or tides.
  • Most or all of the marine conductor pipe sections below the telescoping joint 34 are provided with buoyancy tanks 36 of suflicient capacity to float or nearly float the individual sections of the conductor pipe.
  • the buoyancy tanks 36 surround the marine conductor pipe 33 in a fluidtight manner. Extending longitudinally through each of the buoyancytanks 36 in a direction parallel to the marine conductor pipe 33 are one or more guide sleeves 37 in which small-diameter'pipe strings 39.
  • any suitable type of couplings may be employed to connect two sections of marine conductor pipe 4 the locking bolts 44 carried by the female section 42 of the coupling. It is apparent that the bolts 44 are of a form that may be turned by a diver with a wrench or by an underwater robot. If desired, as shown in FIGURE 5, auxiliary safety means may be provided by means of chains 45 and 46 whichrcan hold the sections of marine conductor pipe together after the bolts of the coupling have been unscrewed. V p As shown in FIGURE 2A, the upper end of the telescoping pipe section may be securedto the drilling vessel 11 in any suitable manner, as by cables 47 and 48.
  • the upper end of the marine conductor pipe assemblybelow the upper telescopingsection 35 is supported from a the vessel by means of cables 49 and 50 which extend to any suitable type of constant tension hoist means 51 and 52 which are mounted on the vessel 11. If desired,
  • additional cables 53 and 54 may be provided whichare.
  • These guide sleeves 37a and 38a are in axial alignment with each of the guide sleeves 37 and 38 passing down through the'buoyancy tanks 36 of the marine conductor pipe as ⁇ sembly, thus serving as guides for small-diameter auxiliary pipes 39 and 40, which in this ,case may be choke and kill lines.
  • the coupling and sealing apparatus 7 between the lower end of the marine conductor pipe 32 and the upper end of the flexible joint 30 is rovides with suitable remotely actuatable latches 60, 61 and 62 which are normally disengaged'or in aninoperative posi tion. while'drilling so that the marine conductor'pip'e above the flexible joint 30 can be pulled away and disconnected from the drilling wellhead assembly in an emergency. Since the marine conductor pipe is disconnected at this point, the'auxiliary lines 39 and 40 are also provided with readily diseonnectible couplings 63 and 64 so that they may be readily disconnected adjacent the coupling device 31. In the event that a flexible joint is employed in the drilling wellhead assembly, it
  • the portions of the auxiliary conduits 39a and 40a opposite the flexible joint30 be also flexible assembly consists of a marine conductor pipe 33 having in order to prevent rupturing the lines.
  • the conduits 39a and 40a may be made of flexible hose of any suitable type.
  • the flexible conduit 39a becomes a rigid conduit 3% again which is preferably provided with a valve 65 which may be remotely operated either electrically or hydraulically'or may be operated by means of an underwater robotrIn the event that the conduit 39b is merely to be used as a choke or kill line 'for the drilling wellhead assembly, it
  • conduit 39b terminates by entering the blowout preventer'28'atflange 66 at a point below thelower-set of rams of the blowout preventer.
  • the conduit 39b is to be used as a cement by-pass line so as to allow cement return from the ,well to by-pass strings of casing already seated in the casinghead 25, the conduit'39b terminates at flange 67 and is provided with a valve68 which is adapted to be operated in a manner similar to valve 65., i It is to be understood that all or the'variou's'cornponents of the wellhead drilling assembly maybe remotely actuatable, as by being operated by hydraulic pressure lines extending from the vessel at the surface.
  • hydraulic hoses ex- 31 tend downwardly from the vessel in the form of a bundle of hoses 70 which terminate at a hose clamp 71 which is secured by an arm 72 to the top of the blowout preventer 29 or the bottom of the flexible joint 30.
  • the individual hydraulic conduit or hoses 73 extend downwardly to a central distribution panel 74 from which point they may run to the various hydraulically-actuatable components of the drilling wellhead assembly.
  • This bundle of hydraulic pressure hoses runs up alongside the entire marine conductor pipe assembly and is secured to a support arm 75 (FIGURE 3) which in turn is supported from the vessel by means of a cable or suspension line 76.
  • the upper end of the bundle of hoses or hydraulic conduit 70 may pass through a curved protective pipe 77 before they bend up again to the vessel.
  • FIGURE 6 One form of a quick disconnect coupling for use at the lower end of the auxiliary lines 39 and 40 (FIGURE 2B) is shown in FIGURE 6 as comprising a housing 78 in which auxiliary pipe 40 can be stabbed.
  • the pipe 48 is provided with seals 79 and 80 above and below discharge ports 81 in the side wall of the pipe and annular passage 82 is provided in the housing 78 and around the ports 81 with a discharge of fluid passing port 83 and thence downwardly to the flexible line 40a (FIGURE 2B).
  • the lower end of the pipe 40 (FIGURE 6) is closed by a plug 84 adapted to seat on shoulder 85 within the housing 78.
  • a second shoulder 86 is provided on the lower end of the housing 78 and is adapted to be engaged by spring-type latching fingers 87.
  • the upper beveled surface 88 of the latching finger 87 is flatter than the beveled surface 89 thereof thus allowing the latching device to be stabbed and locked in place with only a 500 pound pressure while, say, a 2000 pound pull is needed to pull it out of its latched position.
  • a coupling and sealing apparatus 31 is illustrated as comprising a body member 31 having a vertical axial bore 90 of a size sufiicient to receive therein an upwardly-extending tubular mandrel which is fixedly secured to the upper end of the flexible joint 30 in the marine conductor pipe assembly.
  • the mandrel 91 may be bolted at its lower end to the upper end of the flexible joint 39 while the upper end of the coupling housing 31 is bolted to the lower end of the section of the coupling 41.
  • the connecting bolts have been omitted.
  • the outer surface of the mandrel 91 is provided with a latching groove or a series of latching recesses 92 adapted to receive the latching members 93 of the several latches carried by the coupling housing 31.
  • FIGURE 7 One form of latch is shown in FIGURE 7 as being spring actuated by a compression spring 94 which normally urges the latch 93 into the groove 92.
  • a hydraulic line 95 is provided whereby a hydraulic fluid may be pumped into the latch device 61 to act against the piston 96 therein and move the latch member'93 out of the groove 92 into an inoperative position.
  • Suitable retractable locking dogs 97 are carried on the shaft 98 and ar ranged to move outwardly and prevent the latch member 93 from being re-engaged in the groove 92 by the compression spring 94.
  • the outer surface of the mandrel 91 is also preferably provided with a seating shoulder 99 on which a cooperating seating surface carried by the coupling housing 31 can land. Additionally, the outer surface of the mandrel 91 is also preferably provided with a series of grooves 100 into which an expandible hydraulically-actuatable annular sealing member 101, which is carried by the coupling housing 31, may be expanded. As shown in FIGURE 7, the hydraulic line 95 which actuates the latch 61 to retract its latch member 93 is preferably provided with a side outlet 102 which passes through the outer Wall of the coupling housing 31 and is in communication with a chamber 103 in back of the sealing member 101.
  • a hydraulic pressure is applied to line from a control panel on the vessel 11 of the surface, the sealing member 101 is expanded inwardly and contracts around the grooved section of the mandrel 91 to form a fluidtight seal therearound and to provide a predetermined pull-off resistance of say 5000 pounds, that is, the force that is necessary to lift the coupling housing 31 off the mandrel 91 when the seal 101 is being actuated thereagainst.
  • the latches are energized so that their latch members 93 are retracted from the latching groove 92.
  • individual actuating hydraulic pressure lines may be used.
  • Drilling operations are then carried out in the underwater well with the coupling and sealing apparatus 31 arranged in this manner, that is, with the seal activated and the latches retracted so that in an emergency the marine conductor pipe assembly can be readily pulled off the mandrel 91 at the top of the drilling wellhead assembly even though the hydraulic pressure line is plugged so that the seal cannot be de-activated.
  • the coupling and sealing apparatus 31 arranged in this manner, that is, with the seal activated and the latches retracted so that in an emergency the marine conductor pipe assembly can be readily pulled off the mandrel 91 at the top of the drilling wellhead assembly even though the hydraulic pressure line is plugged so that the seal cannot be de-activated.
  • the guide lines 54 (FIGURE 7) which pass through guide blocks 103 in a slidingly engageable manner, may be utilized to align the coupling housing 31 at the lower end of the marine conductor pipe assembly with the mandrel 91 carried at the top of the drilling Wellhead assembly.
  • auxiliary pipes 39 and 49 Prior to withdrawing the marine pipe conductor assembly of the present invention from a drilling Wellhead assembly, the auxiliary pipes 39 and 49 are withdrawn upwardly to the barge. It may be seen that by utilizing the apparatus of the present invention any of the auxiliary small-diameter pipes 39 and 40 which become plugged or otherwise damaged may be readily withdrawn to the vessel and a new one installed in place of it by forcing it down through the guide sleeves 37 and 38 (FIGURE 4).
  • Apparatus for drilling, completing and working over an underwater well comprising operational platform means positioned above the surface of a body of water,
  • a well base positioned below the surface of the water and including substantially vertical well base pipe means having a lower portion thereof fixedly anchored to the formation below said body of water and a portion extending upwardly above said formation,
  • marine conductor means connectible at its lower end to the upper end of said well base pipe means with the upper end of said conductor means extending above the surface of the water in the vicinity of said operational platform means
  • buoyancy tank means secured to said marine conductor means below the surface of the water and having suflicient buoyancy to support a major portion of the weight of said marine conductor means
  • said marine conductor means including a large-diameter marine conductor pipe and a drilling wellhead assembly secured to the lower end thereof,
  • said drilling wellhead assembly comprising blowout preventer means fixedly secured to a wellhead connector means, t
  • auxiliary conduit disconnect coupling means carried on the outside of said drilling wellhead assembly and in communication with the interior thereof
  • auxiliary conduit means extending through said sleeve means of said buoyancy tank means, said auxiliary conduit means being connected at the lower end to said auxiliary conduit disconnect coupling means.
  • auxiliary conduit means comprise individual choke and kill pipelines and wherein said choke and kill line disconnect coupling means comprise individual stab-type couplings at the bottom of said choke and kill pipelines.
  • said marine conductor pipe includes a tubular mandrel extendible within said disconnect coupling above said blowout 'preventer means, said disconnect coupling including 4.
  • said housing of said disconnect coupling is provided with laterally-movable latch means adapted to engage the outer suface of the tubular mandrel ofsaid marine conductor pipe to prevent relative axial movement of said mandrel with respect to said housing, hydraulic operator means in engagement with aid latch means for moving said latch means to an inoperative position out of engagement with said man: drel, and lock means operatively engageable with said latch means for holding said latch means in an inoperative position.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Foundations (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
US401488A 1964-10-05 1964-10-05 Marine conductor pipe assembly Expired - Lifetime US3330340A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US401488A US3330340A (en) 1964-10-05 1964-10-05 Marine conductor pipe assembly
GB42023/65A GB1060818A (en) 1964-10-05 1965-10-04 Marine conductor pipe assembly
DK508765AA DK112231B (da) 1964-10-05 1965-10-04 Apparat til gennemførelse af bore-, fædiggørelses-og istandsættelsesarbejder ved en undervandsdybdeboring fra et flydende fartøj eller en platform fra vandoverfladen.
ES0318104A ES318104A1 (es) 1964-10-05 1965-10-04 Aparato para perforar,terminar y entretener un pozo subacuatico.
NO159942A NO115467B (enrdf_load_stackoverflow) 1964-10-05 1965-10-04
BE670490D BE670490A (enrdf_load_stackoverflow) 1964-10-05 1965-10-04
DES99925A DE1262936B (de) 1964-10-05 1965-10-04 Einrichtung zum Durchfuehren von Bohr-, Fertigstellungs- und Instandsetzungsarbeiten an einer Unterwassertiefbohrung
NL6512828A NL6512828A (enrdf_load_stackoverflow) 1964-10-05 1965-10-04

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US401488A US3330340A (en) 1964-10-05 1964-10-05 Marine conductor pipe assembly

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US3330340A true US3330340A (en) 1967-07-11

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US401488A Expired - Lifetime US3330340A (en) 1964-10-05 1964-10-05 Marine conductor pipe assembly

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US (1) US3330340A (enrdf_load_stackoverflow)
BE (1) BE670490A (enrdf_load_stackoverflow)
DE (1) DE1262936B (enrdf_load_stackoverflow)
DK (1) DK112231B (enrdf_load_stackoverflow)
ES (1) ES318104A1 (enrdf_load_stackoverflow)
GB (1) GB1060818A (enrdf_load_stackoverflow)
NL (1) NL6512828A (enrdf_load_stackoverflow)
NO (1) NO115467B (enrdf_load_stackoverflow)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426843A (en) * 1966-10-10 1969-02-11 Shell Oil Co Marine conductor pipe assembly
US3638721A (en) * 1969-12-10 1972-02-01 Exxon Production Research Co Flexible connection for rotating blowout preventer
USB390679I5 (enrdf_load_stackoverflow) * 1973-08-22 1975-01-28
US3999617A (en) * 1975-09-29 1976-12-28 Exxon Production Research Company Self-supported drilling riser
US4046191A (en) * 1975-07-07 1977-09-06 Exxon Production Research Company Subsea hydraulic choke
US4470722A (en) * 1981-12-31 1984-09-11 Exxon Production Research Co. Marine production riser system and method of installing same
EP0200308A1 (en) * 1985-05-02 1986-11-05 Cooper Industries, Inc. Flotation riser and a method of providing an emergency deballasting system for a riser
US4648747A (en) * 1985-06-26 1987-03-10 Hughes Tool Company Integral buoyant riser
US4784528A (en) * 1986-02-25 1988-11-15 Chevron Research Company Method and apparatus for piled foundation improvement with freezing using down-hole refrigeration units
US5730554A (en) * 1996-03-22 1998-03-24 Abb Vetco Gray Inc. Articulated riser protector
WO1999041484A1 (en) * 1998-02-16 1999-08-19 Adviesbureau H. Van Der Poel Riser pipe construction and module therefor
US6155748A (en) * 1999-03-11 2000-12-05 Riser Systems Technologies Deep water riser flotation apparatus
US20070261856A1 (en) * 2006-05-09 2007-11-15 Noble Drilling Services, Inc. Method and system for retrieving riser for storm evacuation
US8214993B1 (en) 2009-11-11 2012-07-10 Coastal Cargo Company, Inc. Method and apparatus for removing or reinstalling riser pipes of a riser bundle
US20150376907A1 (en) * 2014-06-30 2015-12-31 Cameron International Corporation Platform to Service a Blowout Preventer

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US2476309A (en) * 1944-05-25 1949-07-19 Walter B Lang Apparatus for subaqueous geologic prospecting
US2699321A (en) * 1949-06-21 1955-01-11 Fred N Nelson Deepwater oil drilling and storage craft
GB874178A (en) * 1957-04-15 1961-08-02 California Research Corp Apparatus for drilling offshore wells
US3017934A (en) * 1955-09-30 1962-01-23 Shell Oil Co Casing support
US3189098A (en) * 1961-12-29 1965-06-15 Shell Oil Co Marine conductor pipe assembly
US3202217A (en) * 1961-09-15 1965-08-24 Gray Tool Co Submarine cellar for deep water drilling operations

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Publication number Priority date Publication date Assignee Title
FR1358287A (fr) * 1963-06-06 1964-04-10 Shell Int Research Raccord de tuyaux
FR1362833A (fr) * 1963-06-27 1964-06-05 Shell Int Research Appareil pour guider des éléments d'équipement entre une base opérationnelle située au-dessus de l'eau et une installation sous-marine
DE1191772B (de) * 1963-11-11 1965-04-29 Weserhuette Ag Eisenwerk Bohrgestaenge zur Durchfuehrung von Erdbohrungen nach dem Spuelbohrverfahren

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476309A (en) * 1944-05-25 1949-07-19 Walter B Lang Apparatus for subaqueous geologic prospecting
US2699321A (en) * 1949-06-21 1955-01-11 Fred N Nelson Deepwater oil drilling and storage craft
US3017934A (en) * 1955-09-30 1962-01-23 Shell Oil Co Casing support
GB874178A (en) * 1957-04-15 1961-08-02 California Research Corp Apparatus for drilling offshore wells
US3202217A (en) * 1961-09-15 1965-08-24 Gray Tool Co Submarine cellar for deep water drilling operations
US3189098A (en) * 1961-12-29 1965-06-15 Shell Oil Co Marine conductor pipe assembly

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426843A (en) * 1966-10-10 1969-02-11 Shell Oil Co Marine conductor pipe assembly
US3638721A (en) * 1969-12-10 1972-02-01 Exxon Production Research Co Flexible connection for rotating blowout preventer
USB390679I5 (enrdf_load_stackoverflow) * 1973-08-22 1975-01-28
US3913668A (en) * 1973-08-22 1975-10-21 Exxon Production Research Co Marine riser assembly
US4046191A (en) * 1975-07-07 1977-09-06 Exxon Production Research Company Subsea hydraulic choke
US3999617A (en) * 1975-09-29 1976-12-28 Exxon Production Research Company Self-supported drilling riser
US4470722A (en) * 1981-12-31 1984-09-11 Exxon Production Research Co. Marine production riser system and method of installing same
EP0200308A1 (en) * 1985-05-02 1986-11-05 Cooper Industries, Inc. Flotation riser and a method of providing an emergency deballasting system for a riser
US4648747A (en) * 1985-06-26 1987-03-10 Hughes Tool Company Integral buoyant riser
US4784528A (en) * 1986-02-25 1988-11-15 Chevron Research Company Method and apparatus for piled foundation improvement with freezing using down-hole refrigeration units
US5730554A (en) * 1996-03-22 1998-03-24 Abb Vetco Gray Inc. Articulated riser protector
WO1999041484A1 (en) * 1998-02-16 1999-08-19 Adviesbureau H. Van Der Poel Riser pipe construction and module therefor
AU759074B2 (en) * 1998-02-16 2003-04-03 Adviesbureau H. Van Der Poel Riser pipe construction and module therefor
US6637513B1 (en) 1998-02-16 2003-10-28 Adviesbureau H. Van Der Poel Riser pipe construction and module therefor
US6155748A (en) * 1999-03-11 2000-12-05 Riser Systems Technologies Deep water riser flotation apparatus
US20070261856A1 (en) * 2006-05-09 2007-11-15 Noble Drilling Services, Inc. Method and system for retrieving riser for storm evacuation
US7451822B2 (en) * 2006-05-09 2008-11-18 Noble Drilling Services Inc. Method for retrieving riser for storm evacuation
US8214993B1 (en) 2009-11-11 2012-07-10 Coastal Cargo Company, Inc. Method and apparatus for removing or reinstalling riser pipes of a riser bundle
US8732931B1 (en) 2009-11-11 2014-05-27 Coastal Cargo Company, Inc. Method and apparatus for removing or reinstalling riser pipes of a riser bundle
US9849550B1 (en) 2009-11-11 2017-12-26 Coastal Cargo Company, L.L.C. Method and apparatus for removing or reinstalling riser pipes of a riser bundle
US20150376907A1 (en) * 2014-06-30 2015-12-31 Cameron International Corporation Platform to Service a Blowout Preventer
US9689233B2 (en) * 2014-06-30 2017-06-27 Cameron International Corporation Platform to service a blowout preventer

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Publication number Publication date
DE1262936B (de) 1968-03-14
DK112231B (da) 1968-11-25
NO115467B (enrdf_load_stackoverflow) 1968-10-14
BE670490A (enrdf_load_stackoverflow) 1966-04-04
NL6512828A (enrdf_load_stackoverflow) 1966-04-06
GB1060818A (en) 1967-03-08
ES318104A1 (es) 1965-12-16

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