US3322191A - Underwater well drilling method - Google Patents

Underwater well drilling method Download PDF

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Publication number
US3322191A
US3322191A US283427A US28342763A US3322191A US 3322191 A US3322191 A US 3322191A US 283427 A US283427 A US 283427A US 28342763 A US28342763 A US 28342763A US 3322191 A US3322191 A US 3322191A
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Prior art keywords
well
string
vessel
casing
pipe
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Expired - Lifetime
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US283427A
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English (en)
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Bullard Billy Jack
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Shell USA Inc
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Shell Oil Co
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Priority to US283427A priority Critical patent/US3322191A/en
Priority to DK247264AA priority patent/DK106426C/da
Priority to NL6405803A priority patent/NL6405803A/xx
Priority to US619087A priority patent/US3376923A/en
Application granted granted Critical
Publication of US3322191A publication Critical patent/US3322191A/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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
    • 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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/12—Grappling tools, e.g. tongs or grabs
    • E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
    • 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

Definitions

  • FIG. 1 A first figure.
  • This invention relates to methods and apparatus for use in drilling, completing and working-over underwater Wells wherein the wellhead assembly is positioned below the surface of a body of water.
  • a relatively shallow hole is originally drilled in the ocean floor and a foundation casing is cemented in the hole.
  • a laterally-extending guide base Secured to the upper end of the foundation casing is a laterally-extending guide base from which one or more guide lines extend upwardly to a drilling vessel on the surface of the water where they are secured preferably by constant tension hoist means;
  • guide lines or cables extending between the vessel and the wellhead on the ocean floor
  • the various component parts of a drilling or production wellhead assembly may be guided from the vessel into position at the wellhead by lowering them down along the guide lines.
  • the various pieces of equipment or the wellhead components may be secured together as by hydraulically-actuated latching devices which may be remotely operated from the vessel.
  • a string of pipe normally the drill string, extends from a drilling vessel on the surface of a body of water into a well drilled in the ocean floor so as to provide guide means for lowering elongated strings of well easing into the well with or without various wellhead equipment to be used.
  • the pipe string between the well and the vessel as a guide when lowering strings of easing into the well, it is necessary that the larger diameter string 3,322,191 Patented May 30, 1967 of easing be stripped or lowered down over the guide pipe arranged in the bore of the casing.
  • a further object of the present invention is to provide a method and apparatus for guiding the strings of well casing and wellhead equipment into place at an underwater well without the use of a plurality of flexible guide lines between a floating vessel and an underwater well.
  • Another object of the present invention is to provide a method and apparatus whereby an underwater well may be drilled in the ocean floor and a wellhead positoned beneath the surface of a body of water while contact is maintained at all times between a vessel on the surface of the water and the interior of the well or subsurface wellhead equipment.
  • a still further object of the vide a method and apparatus for drilling underwater wells wherein contact is maintained between the well and the drilling vessel at the surface of a body of water by an elongated guide element which is telescopically arranged within other equipment used during the drilling, completing or working-over of wells.
  • FIGURES 1-8 are diagrammatic views taken in longitudinal projection and partially in cross section illustrating a floating vessel positioned over a drilling location during the sequential steps of starting a well and arranging a tubular guide between the well and the vessel, attaching a well foundation casing and Well base to the top of the guide, lowering the equipment into a well until the foundation casing is at least partially inserted into the well, retrieving a guide from the assembled equipment, positioning the well foundation casing in the 'well and the well base on the ocean floor, removing components from a drilling wellhead assembly on the ocean floor to the vessel, running a string of easing from the vessel into the well, and reconnecting components of the drilling wellhead assembly to the well base of the ocean floor.
  • FIGURE 9 is a diagrammatic view taken in longitudinal cross section of hanging equipment for hanging the upper end of a drill string within the lower end of a larger diameter pipe or casing string;
  • FIGURE 10 is a longitudinal present invention is to proview taken along the bottom of a running pipe string and adapted to engage the upper end of a second pipe string.
  • contact is maintained between a vessel on the surface of the water and a wellhead drilled in the ocean floor through an elongated tubular member or an assemblage of well and/ or well drilling components having a common bore or bores therethrough.
  • this tubular element or assemblage of tubular components and/ or elements the drilling vessel is in fluid flow communication with the interior of the well throughout any well drilling, completion or workover operation.
  • contact is maintained between the vessel and the well by hanging [from the well member or wellhead component an elongated guide element which may be in the form of a length of drill pipe or a length of well casing.
  • the upper end of the guide element used for this purpose is hung in any suitable manner within the bore of the wellhead component or well element in a manner such that the guide element may telescope or be drawn upwardly through the bore of the well element or wellhead component.
  • a drilling vessel, barge or platform 11, of any suitable floating or floatable type is illustrated as floating on the surface of a body of water 12, while being substantially fixedly positioned over a pre-selected well location by suitable vessel-positioning means well known to the art, or by being anchored to the ocean floor 13 by anchor lines 14 and 15 running to anchors (not shown).
  • Equipment of this type may be used when carrying out well drilling operations or well workover operations in water varying from about 150 feet to 1500 feet or more in depth.
  • the drilling vessel 11 is equipped with a suit-able derrick 16 containing the fall line system of a conventional derrick which includes a suitable hoist 18 and other related derrick equipment such as a traveling block and suitable hook and swivel or connect means adapted to be connected to a top of a drill pipe 21 during well drilling operations and being adapted to circulate a drilling fluid therethrough in a manner well known to the art.
  • a suit-able derrick 16 containing the fall line system of a conventional derrick which includes a suitable hoist 18 and other related derrick equipment such as a traveling block and suitable hook and swivel or connect means adapted to be connected to a top of a drill pipe 21 during well drilling operations and being adapted to circulate a drilling fluid therethrough in a manner well known to the art.
  • the vessel 11 is provided with a drilling slot or well 22 which extends vertically through the barge in a conventional manner below the derrick 16.
  • a slot in a vessel 11 may be either centrally located or extend in from one edge.
  • drilling operations may be carried out over the side of the vessel without use of a slot.
  • the drilling vessel may be provided with a deck portion which overhangs the hull of the vessel.
  • the vessel 11 is also provided with other auxiliary equipment needed during well drilling operations, such for example as a rotary table 23 positioned on the operating deck 25 of the vessel.
  • a rotary table 23 Positioned on a lower or auxiliary deck 26, a portion of which is preferably removable, is a removable spider assembly 27 having removable sli-ps 28 insertable in the bore through said spider assembly 27 for engaging and suspending therefrom tubular elements such as a drill string 21.
  • a removable spider assembly 27 Positioned on a lower or auxiliary deck 26, a portion of which is preferably removable, is a removable spider assembly 27 having removable sli-ps 28 insertable in the bore through said spider assembly 27 for engaging and suspending therefrom tubular elements such as a drill string 21.
  • the base or foundation plate 29 of an underwater wellhead assembly is shown as being suspended from the auxiliary deck 26 by means of tie rods 30 and 31.
  • the drill string 21 is shown as a unitary length of pipe, it is well known that a pipe string or drill string used in well drilling operations is made up by threadedly connecting together several short (say 30 feet) sections of pipe to make up a pipe string of the desired length.
  • One or more drill collars 32 may be connected together to form the lower end of the drill string 21 with a drill bit 33 being connected to the lowermost drill collar.
  • the drill string 21 preferably includes a telescoping joint 34 in its length to compensate for the rise and fall of the vessel 11 relative to the drill string 21.
  • the length of the telescoping joint 34 is selected to be preferably slightly greater than the expected rise and fall of the vessel so that the drill bit 33 remains in contact with the bottom of the well 35 regardless of weather conditions at the surface.
  • the telescoping joint 34 may be near the upper end of the drill string at the start of the drilling operations or it may be located just above or between drill collars 32 in the form of a bumper sub in a manner well known to the art.
  • the bumper sub may have a telescoping length of say five feet, and more than one bumper sub may be employed, if desired.
  • FIGURE 1 illustrates a period during well drilling operations after which the well or pilot hole has been drilled in the ocean floor 13 to a depth slightly greater (say 50 or feet) than the water depth in which drilling operations are being carried on.
  • additional sections of drill pipe are added to the upper end of the drill string 21 to continually increase its length.
  • the upper end of the drill string 21 (FIGURE 1) is disconnected from the kelly section (not shown) and rotary table 23 and hung by means of slips 28 in the slip and spider assembly 27 at the lower level 26.
  • a special shoe or short section of large diameter pipe 37 is lowered concentrically over the drill pipe 21.
  • a special hanger element 38 is then threadedly connected into the top of the drill pipe 21.
  • the outer surface of the hanger 38 may be provided with a series of vertical grooves 39 dividing the hanging surface or landing surface 38a into a series of segmental portions. These segmental hanger portions may be tapered upwardly to a point as at 40 if desired.
  • the upper end of the special shoe 37 is threaded, as at 41, for connection to the threaded lower end 42 of the foundation casing 36.
  • the diameter of the hanger 38 is slightly less than the internal diameter of the foundation pile or casing 36 so that it may pass upwardly or be withdrawn through the casing 36. At the same time, the diameter of the hanger 38 is greater than the diameter of the shoulder or landing surface 43 formed on the inner wall of the special shoe 37 so as to be able to be hung therefrom.
  • the lower end of the foundation casing 36 (FIGURE 1), which is supported either by slips in the rotary table 23 or by the hoist system of the derrick 16, is disengaged so that it can be lowered downwardly over the top of the hanger 33 (FIGURE 9) and into the upper end of the shoe 37 which is then threaded to the lower end of the foundation casing 36.
  • the foundation casing 36 is then raised by means of the hoist system of the derrick until the landing shoulder 43 of the shoe engages the hanging surfaces 38a of the hanger 38 and the combined assembly is then raised slightly so that the slip 26 can be disengaged from the spider assembly 27 which would then be moved out of the way, if desired.
  • the upper end of the foundation casing 36 may be of larger diameter, as at 360.
  • the entire foundation casing is then lowered into the water until its upper end is suspended from the spider assembly 27, as shown in FIG- URE 2.
  • the foundation casing may also include a curved wall section 44 adapted to seat in a mating portion 44a of the base platform 29 in a manner similar to a ball-andsocket joint so that the platform 29 may tilt relative to the axis of the foundation casing 36 to conform to the slope of the ocean floor 13.
  • the drilling wellhead assembly generally represented by numeral 4-5, is then lowered by the hoist system of the derrick 16 until it engages and may be connected to the upper end of the foundation casing 36. It is to be understood that the drilling wellhead assembly rnay be made up from various combina tions of components such as a wellhead connector 46,
  • a connector such for example as connector 416, may have a series of horizontally directed connecting screws 51 adapted to engage the upper end 36b of the foundation casing.
  • these screws 51 may be actuated by a diver.
  • the screws When operating in deep water, the screws may be operated by an underwater manipulator provided with a remotely act-uatable power wrench of a type well known to the art.
  • the upper end of the foundation casing 36b may be provided with a circumferential track 52 on which an underwater manipulator may be hung or seated when moving around an apparatus to connect the screws 51.
  • the entire structure After securing the connector 46 to the top of the foundation casing 36b, the entire structure is lifted slightly by the hoist system of the derrick 16 so that the spider assembly 2'7 and beams 53 and 54 can be removed. The entire assembly is then lowered until the curved wall section 44 of the foundation casing 36b seats in its socket 440 in the center of the base platform 29. After the foundation casing has been connected to the foundation plate 29, the tie rods 30 and the entire structure is lowered the water as shown in FIGURE 3.
  • FIGURES 3 and 4 illustrate the operation of retrieving the section of drill pipe 21 which depended from the shoe 37 at the bottom of the foundation casing 36.
  • a suitable fishing tool on a pipe or wire line is run down through the marine conductor pipe 50 to engage the top of the hanger 38 (FIGURE 9) so that the hanger 38 and drill string 21 secured thereto can be pulled upwardly through the foundation casing 36 of the marine conductor 50 to the vessel '11.
  • FIGURE 3 illustrates a small diameter pipe string 55 having a retrieving tool 56 secured to the lower end thereof is run down through the marine conductor pipe d.
  • the upper end of the running or fishing pipe string 55 may be supported by conventional elevators 57 which are supevent that only a shallow well 35 has the drill bit 33 comes in contact with well 35, the hanger 38 (FIGURE 9) drill string ported by the hoist system of the derrick.
  • FIG t3 URE 14 One form of .a retrieving tool 56 is illustrated in FIG t3 URE 14 as comprising a body member 58 having a lower portion 58a of a diameter small enough to tilt within a bore of a pipe or of an element to be retrieved by the tool.
  • the teeth of the slip element 59 are preferably formed as threads so as to engage the threaded opening within the bore of the hanger element 38.
  • FIGURE 10 Another form of a hanger element 63 is shown in FIGURE 10 as having an internally threaded recess 64 extending axially within the bore thereof.
  • the retrieving tool 56 (FIGURE 14) is either stabbed or rotated down into the threaded opening in the top of the hanger.
  • the hoist system of the derrick pulls the fishing pipe string 55, retrieving tool 56, hanger 38, drill string 21 and drill bit 33 upwardly through the bore of the assembled equipment.
  • the bore 37a (FIGURE 9) of the shoe 37 must be slightly larger than the diameter of the drill bit 33 being recovered. Since the diameter of the shoe 37 and the foundation casing 36 is greater than that of the drill bit 33 being retrieved, it is quite evident that it is previously necessary to enlarge the hole 35 in the ocean floor in a manner well known to the art by means of a hole opener or a reaming bit of slightly larger diameter than the largest tubular member to be run into the well.
  • the foundation casing 36 is cemented in the well by conventional cementing methods such for example as running a small-diameter pipe string down through the marine conductor pipe Si) and positioning the cementing head, carried at the lower end, near the lower end of the foundation casing 36. Cement is then pumped down through the cementing string and up the annulus between the foundation casing 36 and the well wall to fill the space with cement 72. The cementing pipe string is then withdrawn from the marine conductor.
  • conventional cementing methods such for example as running a small-diameter pipe string down through the marine conductor pipe Si) and positioning the cementing head, carried at the lower end, near the lower end of the foundation casing 36. Cement is then pumped down through the cementing string and up the annulus between the foundation casing 36 and the well wall to fill the space with cement 72. The cementing pipe string is then withdrawn from the marine conductor.
  • blowout preventer 47 and the connector 48 may have hydraulic or electrical control lines extending thereto from the vessel 11.
  • the connector 48 may be of the type that is actuated and operated by an underwater manipulator or a diver.
  • a length of surface casing 73 (FIGURE 5) of a length equal to or greater than the water depth, say 50 feet longer than the water depth, is run down through the marine conductor pipe 50.
  • a hanger 63 is secured to the top of the surface casing string 73 in order to be able to hang the surface casing from the drilling wellhead assembly.
  • a short section of drill pipe or small-diameter pipe 74 is interposed between the hanger as and a surface casing 73 so that when the hanger 63 is hung from a landing surface within the wellhead assembly of the blowout preventer 47 (FIGURE the short section of smalldiameter pipe 74 will be within the blowout preventer 47 so that a fluid tight seal may be obtained more readily around the smaller-diameter pipe in an emergency.
  • a landing surface may be provided at any point in the drilling wellhead assembly to receive hangers such as 38 and 63 (FIGURES 9 and 10)
  • a landing surface be provided in the drilling wellhead assembly above the connector unit 48 at the lower end of the marine conductor 58 or in the upper portion of the connector 48 (FIGURE 11) so that when the connector is disconnected from the blowout preventer 47, the landing shoulder 7 5 and then the hanger positioned thereon will be pulled back to the vessel with the upper portion of the connector 48.
  • thedrilling wellhead assembly is provided with a mandrel 76 extending upwardly from the blowout preventer 47 in alignment with the bore 77 through the blowout preventer 47.
  • the connector 48 is provided with a remotely actuatable clamping member such as, for example, a split ring 78 adapted to be tightened to secure the connector 48 to the mandrel 76.
  • a remotely actuatable clamping member such as, for example, a split ring 78 adapted to be tightened to secure the connector 48 to the mandrel 76.
  • the shoulder 75 formed on the inner wall of the connector 78 may also be alternatively positioned in the lower end of the flexible joint 49 or in the lower end of the marine conductor pipe 56.
  • the diameter of the landing surface 75 is preferably greater than that of the hanger 38 (FIGURE 9) so that the hanger 38 may pass readily through it as it is withdrawn to the vessel.
  • the landing surface 75 (FIGURE 11) may be substan tially equal to the diameter of the landing surface 43 (FIGURE 9) and smaller than the overall diameter of the hanger 38. If the outer surface of the hanger 38 is grooved in a manner described hereinabove, the hanging surface 75 within the connector 48 is grooved in a cooperating manner so that the raised portion on the outer surface of the hanger 38 may pass through the grooves 7 9 formed in the inner surface of landing shoulder 75 in a manner illustrated in FIGURE 12.
  • the outer surface of the hanger may not be grooved. In the event that a grooved hanger was to be seated on a grooved landing surface 75, it may be necessary to rotate the hanger slightly so that the grooves are substantially in alignment.
  • the surface casing 73 in its hanger 63 are lowered by means of a running pipe string 88 having a retrieving tool 56 at the lower end thereof which may be disengaged by the hanger 63 when the latter is seated on the landing shoulder 75 (FIGURE 11) of the connector 48.
  • the running string 80 (FIGURE 5) and its retrieving tool 56 are then disconnected and withdrawn to the vessel.
  • the surface casing 73 (FIGURE 5) of a length greater than the water depth is hung within the connector 48 of the drilling wellhead assembly so as to serve as a guide element when the drilling wellhead assembly is pulled back to the vessel 11 and subsequently run back down to the foundation casing 36!). Since the well is still relatively shallow, a drilling wellhead assembly 45 including the blowout preventer 47 can be disconnected at connector 51 and pulled back to the vessel by means of the hoist system of the derrick pulling the marine conductor pipe back to the vessel where it would be disconnected in sections and put aside for future use. As the drilling wellhead assembly is pulled upwardly, the depending surface casing string 73 would also be pulled up to the vessel where it would be secured in the slip and spider assembly 27 and 28.
  • the lower threaded end 74a of the short pipe section 74 secured to the hanger 63 would be disconnected from the top of the surface casing string as shown in FIGURE 6.
  • the hanger 63 in pipe section 74 would then be removed from the drilling wellhead assembly 45.
  • the desired length of surface casing 73 would then be added in sections to the upper end of the casing string which would be lowered into the well to the desired depth.
  • the lower end of the surface casing 73 would be positioned in the well a distance above its final landed position which is equal substantially to the water depth or to the distance between the wellhead and the slip and spider assembly on the drilling vessel 11.
  • the upper end of the surface casing at the vessel can be either secured to another drilling assembly for drilling to greater depths or it can be secured to the lower portion of a production wellhead assembly through which drilling operations can be continued.
  • the upper end of the surface casing 73 is secured to a landing head 81 adapted to be fixedly secured as by bolts or latches to the upper end 36b of the foundation casing.
  • the landing head 81 is permanent well equipment and forms the mount for the lower portion of the production wellhead assembly 82 which is fixedly secured above it.
  • this portion 82 of a production wellhead assembly forms part of a second welldrilling assembly which includes remotely-operable ramtype blowout preventers 84 as well as a bag-type blowout preventer 47, connector 48, flexible joint 49 and marine conductor pipe section 56).
  • Wellhead drilling assembly 83 is connected to the landing head 81 which in turn is secured to the top of the surface casing 73, as illustrated in FIGURE 7.
  • the entire assembly may be lowered into the well by one of two methods. In one method additional sections of marine conductor pipe 50 are added to the top of the section of marine conductor pipe secured to the flexible joint 49.
  • a small-diameter cementing pipe string preferably with swab cups at the lower end thereof would be run down through the marine conductor pipe 50, the drilling wellhead assembly and down through the surface casing 73 to, say, about 100 feet from the lower end thereof.
  • the bag-type blowout preventer 47 would then be closed around a cementing pipe string and cement followed by a displacing fluid would be pumped from the vessel down through the cementing pipe string, out the bottom of the surface casing and up the annular space between the outside of the surface casing and the wall of the well, in a manner well known to the art. Thereafter, the cementing pipe string would be withdrawn back to the vessel and a drill string would be run down through the same equipment in the event that it was desired to drill the well deeper.
  • a string of drill pipe 85 would be made up as it was lowered down through the marine conductor pipe and into the well.
  • a suitable connector or adaptor would be connected in the drill pipe string between two sections thereof.
  • the connector or adaptor may take the form of a plug 86 threaded as at 87 so as to be threadedly secured with a left-hand thread to the top of a section of marine conductor pipe 50. If additional sections of drill pipe are being added to the top of the drill pipe string 85 as the drilling wellhead assembly 47 is lowered through the water to the underwater base, the drill pipe string 85 becomes a running pipe string for running the equipment into place.
  • the connector 48 above blowout preventer 47 would be disconnected allowing the pipe string 85 to be withdrawn to the vessel along with flexible joints 49 and connector 48.
  • the one seetion of marine conductor pipe 50 at the top of the flexible joint 49 would be hung in the slip and spider assembly 27 while the adaptor 86 was disconnected from the top of pipe 56 and removed from the drill pipe string 85 also.
  • the drill pipe string 85 would then be made up with additional sections and lowered to substantially the bottom of the surface casing to serve as a cementing pipe string which would be utilized to cement the surface casing in a manner described hereinabove.
  • the drill pipe string 85 After cementing the surface casing 73 in place, the drill pipe string 85 would then be pulled back to the vessel except for a length greater than the water depth which would be hung from the slip and spider assembly 27. At this time, with only the top of one section of drill pipe extending above the slip and spider assembly 27 a landing head 63 (FIGURE 10) would be secured to the top of the drill pipe string. This landing head 63 would be lowered onto the landing shoulder 75 of the connector 48, then positioned at the vessel, and additional sections of marine conductor pipe 50 will be connected successively to the top of the section 50' above the flexible joint 49 and connector 4% as these elements were lowered through the water with the drill pipe 85 depending therefrom in a manner described with regard to FIGURE 2.
  • the upper end of the marine conductor pipe would be secured to the vessel 11 in a manner described with regard to FIGURE of the drawing.
  • a fishing too] similar to that shown in FIGURE 14 would then be run down through the marine conductor pipe 59 in a manner described with regard to FIG- URES 3 and 4 to engage the top of the hanger 63 (FIG- URE after which the fishing tool, hanger and well pipe depending therefrom would be withdrawn to the vessel.
  • a drill bit would be attached to the lower end of the drill string and run down through the assembled equipment into the well.
  • the method of claim 1 including the step of attaching to the upper end of the casing string a well base and drilling wellhead assembly.
  • the method of claim 5 including the step of inserting a cementing pipe string through a conductor pipe forming part of the drilling wellhead assembly and extending to the vessel, running the cementing string to a predetermined depth in said casing string, and pumping cement through said cementing string and casing string and into the well to cement the casing string therein.

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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)
  • Marine Sciences & Fisheries (AREA)
  • Mechanical Engineering (AREA)
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US283427A 1963-05-27 1963-05-27 Underwater well drilling method Expired - Lifetime US3322191A (en)

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Application Number Priority Date Filing Date Title
US283427A US3322191A (en) 1963-05-27 1963-05-27 Underwater well drilling method
DK247264AA DK106426C (da) 1963-05-27 1964-05-16 Fremgangsmåde til nedforing af brøndudstyr fra et fartøj til en undersøisk brønd.
NL6405803A NL6405803A (xx) 1963-05-27 1964-05-25
US619087A US3376923A (en) 1963-05-27 1966-12-05 Underwater well drilling method

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3608652A (en) * 1968-11-13 1971-09-28 A Z Int Tool Co Underwater drilling apparatus
US3621910A (en) * 1968-04-22 1971-11-23 A Z Int Tool Co Method of and apparatus for setting an underwater structure
US3791442A (en) * 1971-09-28 1974-02-12 Regan Forge & Eng Co Coupling means for a riser string run from a floating vessel to a subsea well
DE2325142A1 (de) * 1973-05-17 1974-12-05 Regan Forge & Eng Co Kupplung fuer ein steigrohrtrum zwischen einem schwimmenden bohrschiff und einer unterwasserbohrung
US3981369A (en) * 1974-01-18 1976-09-21 Dolphin International, Inc. Riser pipe stacking system
US4668126A (en) * 1986-02-24 1987-05-26 Hydril Company Floating drilling rig apparatus and method
US20060169491A1 (en) * 2003-03-13 2006-08-03 Ocean Riser Systems As Method and arrangement for performing drilling operations
US20090200037A1 (en) * 2003-03-13 2009-08-13 Ocean Riser Systems As Method and arrangement for removing soils, particles or fluids from the seabed or from great sea depths

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050117A (en) * 1959-10-23 1962-08-21 Shell Oil Co Method and apparatus for cementing underwater wells
US3145775A (en) * 1958-01-30 1964-08-25 Jersey Prod Res Co Method and apparatus for conducting offshore drilling operations
US3163238A (en) * 1962-09-28 1964-12-29 Shell Oil Co Underwater well drilling method and apparatus
US3236308A (en) * 1960-04-04 1966-02-22 Richfield Oil Corp Drilling apparatus and method
US3237694A (en) * 1966-03-01 Submarine drilling method and apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237694A (en) * 1966-03-01 Submarine drilling method and apparatus
US3145775A (en) * 1958-01-30 1964-08-25 Jersey Prod Res Co Method and apparatus for conducting offshore drilling operations
US3050117A (en) * 1959-10-23 1962-08-21 Shell Oil Co Method and apparatus for cementing underwater wells
US3236308A (en) * 1960-04-04 1966-02-22 Richfield Oil Corp Drilling apparatus and method
US3163238A (en) * 1962-09-28 1964-12-29 Shell Oil Co Underwater well drilling method and apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3621910A (en) * 1968-04-22 1971-11-23 A Z Int Tool Co Method of and apparatus for setting an underwater structure
US3608652A (en) * 1968-11-13 1971-09-28 A Z Int Tool Co Underwater drilling apparatus
US3791442A (en) * 1971-09-28 1974-02-12 Regan Forge & Eng Co Coupling means for a riser string run from a floating vessel to a subsea well
DE2325142A1 (de) * 1973-05-17 1974-12-05 Regan Forge & Eng Co Kupplung fuer ein steigrohrtrum zwischen einem schwimmenden bohrschiff und einer unterwasserbohrung
US3981369A (en) * 1974-01-18 1976-09-21 Dolphin International, Inc. Riser pipe stacking system
US4668126A (en) * 1986-02-24 1987-05-26 Hydril Company Floating drilling rig apparatus and method
US20060169491A1 (en) * 2003-03-13 2006-08-03 Ocean Riser Systems As Method and arrangement for performing drilling operations
US7513310B2 (en) * 2003-03-13 2009-04-07 Ocean Riser Systems As Method and arrangement for performing drilling operations
US20090200037A1 (en) * 2003-03-13 2009-08-13 Ocean Riser Systems As Method and arrangement for removing soils, particles or fluids from the seabed or from great sea depths
US7950463B2 (en) 2003-03-13 2011-05-31 Ocean Riser Systems As Method and arrangement for removing soils, particles or fluids from the seabed or from great sea depths

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Publication number Publication date
DK106426C (da) 1967-02-06
NL6405803A (xx) 1964-11-30

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