关键词: 深水钻井, 锚链, 动力特性, 力学模型

Abstract:

In the deep water and bad surrounding ocean, it is very important that the anchor system severed as the located equipment of the platform or drilling boat. In the deep drilling, the bigger the anchor system sizes are, the stronger its strength is. The anchor-chain force subjected was more and more complex with the water depth increasing, so the dynamic analysis was
very important. Considering the relations between the minimum movement and the minimum anchoring force, namely, the anchoring system required the most suitable stiffness, so the reasonable continuing model was selected. The characteristics frequency and vibration model of the anchor-chain was got by calculating and analyzing the dynamic properties of the deep water drilling anchor chain, and the up and down limits of the anchor chain dynamic response were studied. The dynamic characteristics must be pay attention to void the resonance frequency with wave moving in design and construction.

Key words: deep water drilling, anchor-chain, dynamic characteristics, mode