NL7404724A - Buoyancy element for use with under water drilling pipes - contains an easily liquefied vapour - Google Patents
Buoyancy element for use with under water drilling pipes - contains an easily liquefied vapourInfo
- Publication number
- NL7404724A NL7404724A NL7404724A NL7404724A NL7404724A NL 7404724 A NL7404724 A NL 7404724A NL 7404724 A NL7404724 A NL 7404724A NL 7404724 A NL7404724 A NL 7404724A NL 7404724 A NL7404724 A NL 7404724A
- Authority
- NL
- Netherlands
- Prior art keywords
- buoyancy element
- drilling pipes
- under water
- water drilling
- easily liquefied
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- 230000009172 bursting Effects 0.000 abstract 1
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 230000035900 sweating Effects 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats or weights
- F16L1/24—Floats; Weights
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C7/00—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects
- B63C7/06—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects in which lifting action is generated in or adjacent to vessels or objects
- B63C7/08—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects in which lifting action is generated in or adjacent to vessels or objects using rigid floats
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Ocean & Marine Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Buoyancy element comprising a closed hollow body of glass-reinforced thermo-hardening resin, with >=1 hollow chambers, partic. for use with underwater drilling pipes e.g. to facilitate lifting these to the surface, in which the hollow chambers are free from gases which are not liquefiable at >30 atmos. at the normal temp. of use of the buoyancy element, and pref. contg. a gaseous medium liquefiable at 5 atmos (gauge). Elimination of the non-condensible gases, partic. air, removes the danger of bursting when the buoyancy element is brought to the surface after submersion at depths of e.g. 2 km where the high pressure causes water to enter by 'sweating' which can only escape slowly at the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7404724A NL7404724A (en) | 1974-04-05 | 1974-04-05 | Buoyancy element for use with under water drilling pipes - contains an easily liquefied vapour |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7404724A NL7404724A (en) | 1974-04-05 | 1974-04-05 | Buoyancy element for use with under water drilling pipes - contains an easily liquefied vapour |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7404724A true NL7404724A (en) | 1975-10-07 |
Family
ID=19821130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7404724A NL7404724A (en) | 1974-04-05 | 1974-04-05 | Buoyancy element for use with under water drilling pipes - contains an easily liquefied vapour |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL7404724A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1016610C2 (en) * | 2000-11-15 | 2002-05-16 | Lankhorst Recycling Bv | Protection element for a riser segment. |
-
1974
- 1974-04-05 NL NL7404724A patent/NL7404724A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1016610C2 (en) * | 2000-11-15 | 2002-05-16 | Lankhorst Recycling Bv | Protection element for a riser segment. |
| WO2002040821A1 (en) * | 2000-11-15 | 2002-05-23 | Lankhorst Recycling B.V. | Protective element for a riser segment |
| US7210531B2 (en) | 2000-11-15 | 2007-05-01 | Lankhorst Recycling B.V. | Protective element for a riser segment |
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