US3501173A - Tubular connector for lightweight marine conductor pipe - Google Patents
Tubular connector for lightweight marine conductor pipe Download PDFInfo
- Publication number
- US3501173A US3501173A US720245A US3501173DA US3501173A US 3501173 A US3501173 A US 3501173A US 720245 A US720245 A US 720245A US 3501173D A US3501173D A US 3501173DA US 3501173 A US3501173 A US 3501173A
- Authority
- US
- United States
- Prior art keywords
- pipe
- conduit
- drilling
- conductor pipe
- marine conductor
- 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
Links
- 239000004020 conductor Substances 0.000 title description 34
- 230000008878 coupling Effects 0.000 description 35
- 238000010168 coupling process Methods 0.000 description 35
- 238000005859 coupling reaction Methods 0.000 description 35
- 238000005553 drilling Methods 0.000 description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 230000002787 reinforcement Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 6
- 238000007667 floating Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 239000003562 lightweight material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000282472 Canis lupus familiaris Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Classifications
-
- 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
Definitions
- a marine conductor pipe constructed of a plurality of lightweight pipe sections releasably attachable to one another in an end-to-end manner.
- Each pipe section includes a conduit member constructed of lightweight material and defining a throughbore.
- Each end of the conduit is attached in a fluid-tight manner to relatively rigid coupling members defining throughbores axially aligned with each other and with the throughbore defined by the conduit member.
- Suitable reinforcing members are used to limit the maximum distance between the two coupling members to substantially the effective operative length of the conduit member.
- the reinforcing members extend lengthwise along the entire length of the conduit member and are attached to both of the coupling members.
- This invention relates to apparatus for use in drilling, completing and working-over operations in oil and gas wells at offshore 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.
- Deepwater wells are generally drilled from vessels of varying designs commonly known as drilling barges, vessels or platforms. Deepwater wells are gen erally drilled by one of two methods. In one method the string of drill pipe extends downwardly from the drilling barge 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 barge so that drilling fluid may be circulated down the drill pipe, through the drill bit, and thence upwardly on the outside of the drill pipe, out the circulation head and up the flexible hose to the barge again.
- a large-diameter pipe known as a marine conductor pipe is put together and arranged to extend from the drilling wellhead assembly on the ocean floor to the barge 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.
- Another object of the present invention is to provide a marine conductor pipe comprised of readily attachable and detachable pipe sections, each section being of lightweight construction.
- Still another object of this invention is to provide a marine conductor pipe constructed of lightweight materials and employing reinforcement means for imparting additional structural strength thereto.
- a marine conductor comprising a plurality of elongated pipe sections detachably interconnected in an end-to-end manner, each pipe section including a lightweight, large diameter conduit means having coupling means secured in a fluid-tight manner to each end thereof.
- Reinforcement means extend along substantially the length of the conduit means to limit the maximum distance between said coupling means to substantially the effective operative length of the conduit means.
- FIGURE 1 is a diagrammatic view taken in longitudinal projection illustrating a floating drilling vessel positioned at the surface of a body of water with a marine conductor pipe according to the present invention extending from the vessel and being operatively associated with 3 an underwater wellhead assembly positioned at the earth under the water;
- FIGURE 2 is a cross-sectional view of a section of marine conductor pipe according to the present invention showing the section operatively associated with cooperating elements of adjoining sections;
- FIGURE 3 is an enlarged, cross-sectional view illustrating a preferred means of attaching together elements of a pipe section
- FIGURE 4 is a cross-sectional view taken along the line 4 4 of FIGURE 2;
- FIGURE 5 is an enlarged, partial cross-sectional vieW illustrating a portion of an alternative embodiment of the present invention.
- a drilling barge or platform is represented by numeral 11.
- the drilling barge or platform 11 is of any suitable type, preferably one, as illustrated, floating at the surface of a body of water 12 and substantially fixedly positioned over a preselected drilling location by suitable barge positioning means or by being anchored to the ocean floor 13 by suitable anchors (not shown) connected to the anchor lines 14 and 15.
- Equipment of this type may be used when carrying on well drilling operations in water depths varying from about 100 to 1500 feet or more.
- the drilling barge is equipped with a conventional derrick 16 as well as other auxiliary equipment (not shown) needed during the drilling of a well such as a hoist system, draw works, rotary table, etc.
- the derrick 16 may be positioned over a drilling slot 17 which extends vertically through the barge in a conventional manner.
- the slot 17 in the 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 using a slot.
- the drilling vessel may be provided with a deck portion which overhangs the hull on the vessel.
- the underwater well may be started by any of the methods well known to the art wherein a foundation pile or a casing 18 is installed in the hole drilled in the earth and secured therein, as by means of cement 19.
- the underwater wellhead assembly comprises or includes a base member 20 fixedly secured to the foundation pile 18.
- a drilling wellhead assembly is run down and connected to the wellhead assembly by any conventional well known procedure such as by use of guide lines, pipe string lowering arrangements, etc.
- a typical drilling assembly comprises a wellhead connector 21, ram-type blow-out preventer 22, sleeve-type blow-out preventer 23 and a marine conductor pipe 24 which extends upwardly to the vessel 11.
- the upper end of marine conductor pipe 24 has attached thereto lines or cables 25 and 26 which are in turn positioned over rotatable pulley elements mounted on vessel 11.
- Lines or cables 25 and 26 have attached to their respective free ends counterweights 27 and 28 which, for ease of illustration, are shown as carried on the outside of the vessel, but which are generally arranged within the vessel. With this arrangement, tension is applied along the length of marine conductor pipe 24 to keep it from buckling under its own weight and the weight of the column of mud in the conductor pipe during drilling operations.
- a telescopic joint 24' is preferably provided at the upper end of the conductor pipe to compensate for up-and-down movement of the vessel in the usual manner.
- the particular illustrated tension means is shown by way of example only and forms no part of the present invention. It is to be understood that any suitable tensioning means, constant tension winches, etc., could be used for the purpose of applying tension to the marine conductor pipe.
- a mud return hose (not shown) leads mud from the top of conductor pipe 24 to a mud pit (not shown) on the vessel 11 in the well known manner during drilling operations.
- Marine conductor pipe 24 is comprised of a series of elongated pipe sections 29 which are connected in an end-to-end manner to provide a drilling passage for a drill string.
- the lowermost section of marine conductor pipe 24 may be fixedly secured to the top of blow out preventer 23 by any suitable means. Seal means normally will be provided between blow-out preventer 23 and its associated pipe section 29 to assist in forming a liquid-tight seal therebetween.
- Pipe section 29 includes a large diameter conduit member 30 defining a throughbore 30'.
- Conduit member 30 may be formed of a metallic or non-metallic material and is preferably constructed of a lightweight, water-proof material such as fiberglass, flexible plastic, fabric, synthetic rubber or the like.
- a relatively rigid first coupling member 31 is attached to conduit member 30 at one end thereof.
- First coupling member 31 defines a throughbore 31' which is disposed in axial alignment with the throughbore 30 defined by conduit member 30.
- First coupling member 31 is of substantially cylindrical construction and includes an outwardly extending circular flange member 32 and a circular connector groove 33.
- a recessed circular clamping channel 34 is preferably formed on the outer surface of coupling member 31 beneath circular flange member 32 and is adapted to receive one end or a portion of conduit member 30 in the manner shown in FIGURE 2 and FIGURE 3.
- the cooperating end of conduit member 30 is clamped into fluid-tight engagement with clamping channel 34 by means of a U-clamp member 35 of conventional design or any other suitable clamping or bonding means well known in the art.
- Suitable means such as clamping bolt 36, may be used to vary the degree of clamping pressure exerted by clamp 35 on the end of conduit member 30 and clamping channel 34 in the usual manner.
- clamping bolt 36 may be used to vary the degree of clamping pressure exerted by clamp 35 on the end of conduit member 30 and clamping channel 34 in the usual manner.
- circular flange member 32 has a plurality of tapped holes or threaded recesses 37 therein which are matingly engaged with the threaded ends of reinforcement members 38 which in this case comprise tie rods.
- Reinforcement members 38 extend substantially along the length of conduit member 30 and terminate at threaded end members 39.
- the threaded end members 39 pass through apertures 40 in a second flange member 41 comprising a portion of second coupling member 42.
- Second coupling member 42 defines a throughbore 42. which is coaxial with and in communication with throughbores 30, 31.
- Lock nuts 43 and 44 threaded on end members 39 on opposite sides of second flange member 41 are used to retain reinforcement members 38 in a predetermined fixed position with respect thereto.
- FIGURE 4 illustrates this arrangement in more detail.
- Second coupling member 42 also includes a second clamping channel 45 (FIGURE 2) which engages conduit member 30 by means of a second clamp 46.
- Second clamp 46 may be of the same type as clamp 35 and the operation thereof will 'be similar.
- any suitable clamping or coupling arrangement may be utilized to effect fluidtight attachment between conduit member 30 and the coupling members 31, 42.
- second coupling member 42 ditfers from that of first coupling member 31 in that the second coupling member 42 has no connector groove similar to groove 33. Instead, second coupling member 42 has a depending skirt or female connector portion -47 of enlarged internal diameter which is provided with one or more set screws 48 operatively associated therewith.
- the enlarged housing skirt 47 is adapted to be placed over the first coupling member of an adjoining pipe section and the set screw 48 is screwed inwardly through the wall of skirt 47 to engage the connector groove 33 of the adjoining pipe section thereby releasibly attaching the pipe sections together. Broken away portions of adjoining pipe sections are shown to illustrate more clearly this method of attachment.
- wear rings 49 may be disposed in conduit member 30 to help protect conduit member 30 from damage due to contact with a rotating drill string (not shown) which in the drilling operation passes through the marine conductor pipe.
- the wear rings are preferably constructed of steel and are fixedly attached or bonded by any suitable means to the inner wall of conduit member 30.
- the marine conductor pipe 24 is maintained under tension throughout its length during the drilling operation. Accordingly, it is not necessary for the various pipe sections 29 comprising the conductor pipe to be particularly resistant to endwise compressive forces.
- the primary function of the reinforcement members is to limit the maximum distance between the first coupling member 31 and the second coupling member 42 to substantially the effective operative length of conduit member 30.
- the reinforcement means utilized should be particularly effective to resist endwise tension forces applied to the pipe section to prevent the coupling members from being pulled away from the pipe section conduit members, For this reason, tie rods of relatively small thickness, or even cables, may be used as reinforcement members, thereby keeping the weight of each pipe section at a minimum.
- FIGURE 5 illustrates one possible alternative embodiment of the present invention wherein a cable would be used as the reinforcement member.
- FIGURE 5 is an enlarged, partial sectional view illustrating a portion of a conduit member 30 having molded or imbedded therein a cable 50, comprising the reinforcement member, which would extend the full length of conduit member 30 and be attached by any desired means to the pipe section coupling members.
- Any suitable flexible non-metallic relatively lightweight pipe having means limiting its axial extension may be used as conduit members 30.
- a marine conductor adapted to extend trom a floating vessel on the surface of a body of water to a well head assembly on the earth underlying said body of water, said marine conductor comprising:
- each pipe section including a lightweight, large-diameter conduit formed of fiberglass material and defining an axial throughbore;
- first coupling member operatively associated with one end of said conduit, said first coupling member comprising a cylindrical element defining a throughbore in substantially axial alignment with said conduit throughbore, an outwardly extending circular flange member fixedly secured to the cylindrical element and a channel formed in said cylindrical element on at least one side of said flange member, said channel receiving one end of said conduit, and clamping means extending substantially about the periphery of said channel securing said conduit end to said first coupling member in a fluid-tight manner;
- a second coupling member operatively associated with the other end ofsaid conduit and defining a throughbore in substantially axial alignment with the throughbore of said conduit, said second coupling member including an enlarged portion adapted to receive the cylindrical element of a first coupling member of another pipe section, a second outwardly extending circular flange member spaced from said enlarged portion, a second channel adapted to receive the other end of said conduit, and second clamping means extending substantially about the periphery of said second channel and securing said other conduit end to said second coupling member in a fluid-tight manner;
- a plurality of spaced wear rings connected to the inner wall of said conduit to protect the conduit from the potentially harmful wearing action of a rotating drill string within the pipe section during drilling operations.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US72024568A | 1968-04-10 | 1968-04-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3501173A true US3501173A (en) | 1970-03-17 |
Family
ID=24893244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US720245A Expired - Lifetime US3501173A (en) | 1968-04-10 | 1968-04-10 | Tubular connector for lightweight marine conductor pipe |
Country Status (4)
Country | Link |
---|---|
US (1) | US3501173A (de) |
DE (1) | DE1917819A1 (de) |
FR (1) | FR2005941A1 (de) |
GB (1) | GB1251262A (de) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3612176A (en) * | 1969-10-31 | 1971-10-12 | Global Marine Inc | Flexible and extensible riser |
US3768842A (en) * | 1971-08-05 | 1973-10-30 | Vetco Offshore Ind Inc | Light weight marine riser pipe |
US3894567A (en) * | 1969-12-18 | 1975-07-15 | Texaco Inc | Offshore vessel mooring |
US3957290A (en) * | 1973-09-21 | 1976-05-18 | United Kingdom Atomic Energy Authority | Flexible pipe joints |
DE2655579A1 (de) * | 1975-12-18 | 1977-06-30 | Regan Offshore Int | Kupplung fuer leitungsabschnitte von meeressteigleitungen |
US4103748A (en) * | 1976-12-10 | 1978-08-01 | Arnold James F | Method for inhibiting the wear in a well casing |
US4320545A (en) * | 1978-10-23 | 1982-03-23 | Amtel, Inc. | Easily removable fluid swivel for SALM buoy installation |
US4358225A (en) * | 1978-05-02 | 1982-11-09 | Hollandsche Beton Groep N.V. | Deep ocean conduit |
US4403732A (en) * | 1980-08-18 | 1983-09-13 | Theodore Primich | Energy saving heat recycling system |
US4470621A (en) * | 1982-01-04 | 1984-09-11 | Hydril Company | Flexible tubular connector |
US5580102A (en) * | 1991-11-27 | 1996-12-03 | The Dow Chemical Company | Pipe support and pipeline therewith |
US20040216928A1 (en) * | 2003-02-07 | 2004-11-04 | Sebastian Bauer | Telescopable boring rod mechanism |
US20050099002A1 (en) * | 2003-11-06 | 2005-05-12 | Sanches Luis R.F. | Seawater suction hose and method |
US20080264643A1 (en) * | 2007-04-24 | 2008-10-30 | Brian Skeels | Lightweight device for remote subsea wireline intervention |
US20080264644A1 (en) * | 2007-04-27 | 2008-10-30 | Ralph Sawtell | Method and apparatus for connecting drilling riser strings and compositions thereof |
US20090212092A1 (en) * | 2008-02-21 | 2009-08-27 | Israel Stol | Method for forming friction welded compression based tubular structures |
US20100129160A1 (en) * | 2008-11-21 | 2010-05-27 | Lockheed Martin Corporation | Tendon-Supported Membrane Pipe |
US20120111438A1 (en) * | 2010-11-04 | 2012-05-10 | Fang-Sheng Kuo | Water intake pipe of ocean thermal energy conversion power plant |
US20130043036A1 (en) * | 2011-08-19 | 2013-02-21 | Cameron International Corporation | Riser system |
US10502348B2 (en) | 2013-11-15 | 2019-12-10 | Maritime Promeco As | Riser connector assembly |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR9203362A (pt) * | 1992-08-27 | 1994-03-29 | Petroleo Brasileiro Sa | Junta de riser de completacao cisalhavel |
US5439323A (en) * | 1993-07-09 | 1995-08-08 | Westinghouse Electric Corporation | Rod and shell composite riser |
US5771975A (en) * | 1997-02-14 | 1998-06-30 | Northrop Grumman Corporation | Composite cylinder termination |
US5813467A (en) * | 1997-02-14 | 1998-09-29 | Northrop Grumman Corporation | Composite cylinder termination formed using snap ring |
NO305665B1 (no) * | 1997-06-17 | 1999-07-05 | Norske Stats Oljeselskap | Strekkopptagende anordning |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US833426A (en) * | 1905-05-23 | 1906-10-16 | Johann Taube | Hose for sucking and dredging engines. |
US993934A (en) * | 1904-10-22 | 1911-05-30 | Emil Witzenmann | Metallic spiral hose. |
US1366694A (en) * | 1918-02-08 | 1921-01-25 | Harry D Kors | Pipe-section |
US1384962A (en) * | 1921-07-19 | T ktjhne | ||
US2305644A (en) * | 1939-12-04 | 1942-12-22 | Titeflex Metal Hose Co | Flexible radio shielding conduit |
US2536216A (en) * | 1946-06-17 | 1951-01-02 | Powell Edward Baden | Flexible connections in drill pipe strings |
US2809699A (en) * | 1954-08-27 | 1957-10-15 | Exxon Research Engineering Co | Well casing protected against electrolytic action |
US3142344A (en) * | 1960-12-21 | 1964-07-28 | Shell Oil Co | Method and apparatus for drilling underwater wells |
US3155175A (en) * | 1962-06-07 | 1964-11-03 | Shell Oil Co | Wellhead cementing assembly with by-pass |
US3168334A (en) * | 1961-11-28 | 1965-02-02 | Shell Oil Co | Flexible pipe joint |
US3170720A (en) * | 1962-01-30 | 1965-02-23 | Browning Harold | Flexible conduit for piping and the like |
US3232640A (en) * | 1960-09-14 | 1966-02-01 | Calumet & Hecla | Multi-wall flexible connector with interply pressurization |
US3347566A (en) * | 1964-10-26 | 1967-10-17 | Scott Aviation Corp | Breakaway coupling assembly |
-
1968
- 1968-04-10 US US720245A patent/US3501173A/en not_active Expired - Lifetime
-
1969
- 1969-04-08 GB GB1251262D patent/GB1251262A/en not_active Expired
- 1969-04-08 DE DE19691917819 patent/DE1917819A1/de active Pending
- 1969-04-08 FR FR6910753A patent/FR2005941A1/fr not_active Withdrawn
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1384962A (en) * | 1921-07-19 | T ktjhne | ||
US993934A (en) * | 1904-10-22 | 1911-05-30 | Emil Witzenmann | Metallic spiral hose. |
US833426A (en) * | 1905-05-23 | 1906-10-16 | Johann Taube | Hose for sucking and dredging engines. |
US1366694A (en) * | 1918-02-08 | 1921-01-25 | Harry D Kors | Pipe-section |
US2305644A (en) * | 1939-12-04 | 1942-12-22 | Titeflex Metal Hose Co | Flexible radio shielding conduit |
US2536216A (en) * | 1946-06-17 | 1951-01-02 | Powell Edward Baden | Flexible connections in drill pipe strings |
US2809699A (en) * | 1954-08-27 | 1957-10-15 | Exxon Research Engineering Co | Well casing protected against electrolytic action |
US3232640A (en) * | 1960-09-14 | 1966-02-01 | Calumet & Hecla | Multi-wall flexible connector with interply pressurization |
US3142344A (en) * | 1960-12-21 | 1964-07-28 | Shell Oil Co | Method and apparatus for drilling underwater wells |
US3168334A (en) * | 1961-11-28 | 1965-02-02 | Shell Oil Co | Flexible pipe joint |
US3170720A (en) * | 1962-01-30 | 1965-02-23 | Browning Harold | Flexible conduit for piping and the like |
US3155175A (en) * | 1962-06-07 | 1964-11-03 | Shell Oil Co | Wellhead cementing assembly with by-pass |
US3347566A (en) * | 1964-10-26 | 1967-10-17 | Scott Aviation Corp | Breakaway coupling assembly |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3612176A (en) * | 1969-10-31 | 1971-10-12 | Global Marine Inc | Flexible and extensible riser |
US3894567A (en) * | 1969-12-18 | 1975-07-15 | Texaco Inc | Offshore vessel mooring |
US3768842A (en) * | 1971-08-05 | 1973-10-30 | Vetco Offshore Ind Inc | Light weight marine riser pipe |
US3957290A (en) * | 1973-09-21 | 1976-05-18 | United Kingdom Atomic Energy Authority | Flexible pipe joints |
DE2655579A1 (de) * | 1975-12-18 | 1977-06-30 | Regan Offshore Int | Kupplung fuer leitungsabschnitte von meeressteigleitungen |
US4103748A (en) * | 1976-12-10 | 1978-08-01 | Arnold James F | Method for inhibiting the wear in a well casing |
US4358225A (en) * | 1978-05-02 | 1982-11-09 | Hollandsche Beton Groep N.V. | Deep ocean conduit |
US4320545A (en) * | 1978-10-23 | 1982-03-23 | Amtel, Inc. | Easily removable fluid swivel for SALM buoy installation |
US4403732A (en) * | 1980-08-18 | 1983-09-13 | Theodore Primich | Energy saving heat recycling system |
US4470621A (en) * | 1982-01-04 | 1984-09-11 | Hydril Company | Flexible tubular connector |
US5580102A (en) * | 1991-11-27 | 1996-12-03 | The Dow Chemical Company | Pipe support and pipeline therewith |
US7163069B2 (en) * | 2003-02-07 | 2007-01-16 | Bauer Maschinen Gmbh | Telescopable boring rod mechanism |
US20040216928A1 (en) * | 2003-02-07 | 2004-11-04 | Sebastian Bauer | Telescopable boring rod mechanism |
US7080858B2 (en) * | 2003-11-06 | 2006-07-25 | The Goodyear Tire & Rubber Company | Seawater suction hose and method |
US20050099002A1 (en) * | 2003-11-06 | 2005-05-12 | Sanches Luis R.F. | Seawater suction hose and method |
US8047295B2 (en) * | 2007-04-24 | 2011-11-01 | Fmc Technologies, Inc. | Lightweight device for remote subsea wireline intervention |
US20080264643A1 (en) * | 2007-04-24 | 2008-10-30 | Brian Skeels | Lightweight device for remote subsea wireline intervention |
NO345619B1 (no) * | 2007-04-24 | 2021-05-10 | Fmc Tech Inc | Lettvektsanordning for fjernstyrt intervensjon av undervanns vaierline |
GB2462751B (en) * | 2007-04-24 | 2011-11-16 | Fmc Technologies | Lightweight device for remote subsea wireline intervention |
US20080264644A1 (en) * | 2007-04-27 | 2008-10-30 | Ralph Sawtell | Method and apparatus for connecting drilling riser strings and compositions thereof |
US8869900B2 (en) * | 2007-04-27 | 2014-10-28 | Alcoa Inc. | Method and apparatus for connecting drilling riser strings and compositions thereof |
WO2009105697A1 (en) * | 2008-02-21 | 2009-08-27 | Alcoa Inc. | Friction welded compression based tubular structures and method for forming same |
US20090212092A1 (en) * | 2008-02-21 | 2009-08-27 | Israel Stol | Method for forming friction welded compression based tubular structures |
US20100129160A1 (en) * | 2008-11-21 | 2010-05-27 | Lockheed Martin Corporation | Tendon-Supported Membrane Pipe |
US8182176B2 (en) * | 2008-11-21 | 2012-05-22 | Lockheed Martin Corporation | Tendon-supported membrane pipe |
US20120111438A1 (en) * | 2010-11-04 | 2012-05-10 | Fang-Sheng Kuo | Water intake pipe of ocean thermal energy conversion power plant |
US8444182B2 (en) * | 2010-11-04 | 2013-05-21 | Sea Energy Technology Co, Ltd. | Water intake pipe of ocean thermal energy conversion power plant |
US20130043036A1 (en) * | 2011-08-19 | 2013-02-21 | Cameron International Corporation | Riser system |
US8657013B2 (en) * | 2011-08-19 | 2014-02-25 | Cameron International Corporation | Riser system |
US10502348B2 (en) | 2013-11-15 | 2019-12-10 | Maritime Promeco As | Riser connector assembly |
Also Published As
Publication number | Publication date |
---|---|
FR2005941A1 (de) | 1969-12-19 |
DE1917819A1 (de) | 1969-11-06 |
GB1251262A (de) | 1971-10-27 |
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