Nonlinear response characteristics of TLP with and without mechanical damping system in very high waves

Conference · Tue May 01 00:00:00 EDT 1984 · Proc., Annu. Offshore Technol. Conf.; (United States)

OSTI ID:6418194

Ninomiya, K; Katayama, M; Sawada, K; Unoki, K

Recently, the various types of tension leg platform (hereinafter called ''TLP'') are being proposed for deep sea oil drilling and production platforms. The authors previously proposed a new concept of TLP with a mechanical damping system (hydraulic damper) by studying its response characteristics in waves (OTC 4393). A study on non-linear response characteristics in very high waves and an applicability of the hydraulic damper to an actual TLP was performed following the above study. This paper first presents an approximate response analysis method of TLP in very high waves based on the finite amplitude and non-linearized theory. Next, the results of systematic tank tests in very high waves for verifying the accuracy in computation of the above response analysis method are briefly introduced. Further, the response characteristics of TLP with and without the mechanical damping system in very high waves and their applicability to practical problems are discussed by pursuing the systematic numerical analysis on a prototype TLP. Finally, the results of an in-laboratory dynamic loading test are described, which was performed to verify the performance of hydraulic damper, selected as an optimum system, and to investigate the extent of its generated heat.

• Research Organization: Mitubishi Heavy Industries
• OSTI ID: 6418194
• Report Number(s): CONF-8405208-
• Journal Information: Proc., Annu. Offshore Technol. Conf.; (United States), Vol. 1; Conference: 16. annual offshore technology conference, Houston, TX, USA, 7 May 1984
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
42 ENGINEERING
OFFSHORE PLATFORMS
DAMPING
MOORINGS
NONLINEAR PROBLEMS
WAVE FORCES
ACCURACY
AMPLITUDES
DYNAMIC LOADS
HEAT TRANSFER
HYDRAULICS
OFFSHORE DRILLING
OIL WELLS
OPTIMIZATION
PERFORMANCE TESTING
DRILLING
ENERGY TRANSFER
FLUID MECHANICS
MECHANICS
TESTING
WELLS
020300* - Petroleum- Drilling & Production
423000 - Engineering- Marine Engineering- (1980-)
420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)