Results 111 to 120 of about 1,207,140 (178)
Estimations of effective doses received from naturally occurring radioactivity in polymetallic nodules from the deep sea. [PDF]
Sci RepLüttke T +11 more
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Dynamic Analysis of Marine Risers
Offshore South East Asia Show, 1982Abstract Drilling and production in deeper water set new requirements to the design of marine risers. In this paper the most common methods of dynamic analysis of such risers are reviewed and discussed with reference to a set of full scale data.
O. Egeland, T. Wiik, B.J. Natvig
openaire +1 more source
Vibrations of Marine Riser Systems
Journal of Energy Resources Technology, 1980A discrete multi-degree-of-freedom model is used to study the dynamic response of marine riser systems to loads generated by sea waves and currents. A linearization scheme is used to determine an approximate solution for the system response. A variety of studies regarding the effects of system and environmental parameters on the maximum bending stress ...
P.-T. D. Spanos, T. W. Chen
openaire +1 more source
The Marine Riser- A Procedure for Analysis
Offshore Technology Conference, 1969Oil drilling and producing operations have been moving farther and farther offshore to exploit new gas and oil resources. Marine operations pose problems not encountered in land operations such as weather, ocean waves and currents, limited storage space, corrosion, and transportation difficulties. One method of offshore operations places
Clinton G. Gosse, G.L. Barsdale
openaire +1 more source
Hydrodynamic Tests on Marine Risers
Offshore Technology Conference, 1982Abstract This paper presents experimental techniques and resultant data from an ongoing programmed of large scale laboratory tests on marine risers in waves. The experiments are being carried out in the No. 3 tank of the National Maritime Institute in England which has a water depth of 25 ft (7.6 m).
George G. Hartnup +4 more
openaire +1 more source
Dynamic response of marine risers
Engineering Structures, 1989Abstract The dynamic response of marine risers to both regular and random waves is obtained in the time domain using a time marching numerical integration scheme to solve the equation of motion. For random sea states, time histories of sea surface elevation, water-particle kinematics and vessel top motion are simulated by a harmonic superposition ...
S. Ahmad, T.K. Datta
openaire +1 more source
Offshore Technology Conference, 1986
ABSTRACT A new integrated riser tensioning system is presented. The system unitizes upper riser components into a compact package, and uses the slip joint as the support structure for the riser tensioning cylinders. The system is called the Upper Marine Riser Package (UMRP).
J.S. Lim, J.R. Pfeifler
openaire +1 more source
ABSTRACT A new integrated riser tensioning system is presented. The system unitizes upper riser components into a compact package, and uses the slip joint as the support structure for the riser tensioning cylinders. The system is called the Upper Marine Riser Package (UMRP).
J.S. Lim, J.R. Pfeifler
openaire +1 more source
Probabilistic Dynamical Analysis of a Marine Riser
1983This paper presents numerical techniques of modal and spectral probabilistic analysis applied to the study of vibrations of a marine riser. The latter is fixed to a tethered buoyant platform (or tension leg platform) and can be considered as a beam with variable normal force.
De Wilde, W., Narmon, B.
openaire +2 more sources
Nondeterministic Analysis of a Marine Riser
Offshore Technology Conference, 1973ABSTRACT This paper presents some significant results of analytical investigations of the effect of various problem parameters on the nondeterministic response of a marine riser to random wave forces and deterministic steady current forces. It is shown that the response to random wave forces is highly dependent upon
T.C. Tucker, J.P. Murtha
openaire +1 more source