US Patent No: 6,045,296
Number of patents in Portfolio can not be more than 2000
Tension ring for riser
Stats
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Apr 4, 2000
Issued date -
Jul 9, 1996
filing date -
08/675,983
serial no -
In Force
status
Importance
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Abstract
A tensioning device is provided for applying tension to a riser from a surface deck of an offshore oil or gas well. The tensioning device is used with a riser of the type having threads formed on an exterior surface thereof. A tension ring of the tensioning device is formed from first and second ring halves that are clamped together about the riser. The first and second halves have inner threads for engaging the threads of the riser. A clearance exists between the first and second ring halves when the ring halves are clamped together about the riser to allow the first and second ring halves to be tightened against the exterior surface of the riser so that the tension ring is securely fastened to the riser. Fastening means are used for clamping the first and second ring halves together about the riser. Tensioning members that couple at one end to the tension ring and at the other end to the surface deck are used to apply tension to the riser from the surface deck.
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First Claim
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,733,991 Adjustable riser top joint and method of use | 29 | 1986 | |
| 4,883,387 Apparatus for tensioning a riser | 54 | 1988 | |
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| 4,428,433 Telescopic joint upper tube retainer method | 14 | 1981 | |
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| 4,840,194 Explosion proof electrical conduit sealing fitting | 14 | 1988 | |
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| 4,818,147 Tendon for anchoring a semisubmersible platform | 11 | 1987 | |
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| 5,482,406 Variable spring rate compression element and riser tensioner system using the same | 11 | 1993 | |
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| 5,310,007 Tensioning ring and riser assembly for an oil well platform tensioning apparatus | 9 | 1993 | |
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| 5,522,681 Thread seal for segmented nut | 8 | 1994 | |
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| 4,799,827 Modular riser tensioner incorporating integral hydraulic cylinder accumulator units | 16 | 1986 | |
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| 4,291,767 Method for stabilizing and hanging surface casing | 4 | 1980 | |