海上地震拖缆拉力计算与应用

Tension Calculation and Application of Offshore Seismic Streamer

拖缆拉力是海上地震作业中一个重要指标,这直接关系到水下设备的使用寿命和安全。在冰区进行海洋地震勘探,对作业人员和设备都是极大的考验。出于设备安全考虑,应使用海锚代替尾标来应对拖缆等浮和摇摆问题。但在这方面国内外做的极少,并无现成经验可供参考,特别是对尾标和海锚的拉力没有一个准确的概念,不知道效果如何。这样工作人员只能通过测试和计算来确定海锚的使用方法和数量,保证顺利、高效、安全的作业。

Streamer tension is one of the most important indicators to offshore seismic pros- pecting. It is directly related to the service time and safety of the underwater equipment. Prospecting in ice-ocean is a great challenge to workers and equipment. For the sake of safety, cone drogue should be used instead of the tail buoy to control the depth and heading of the streamer. There is no ready-made experience for reference because so little work has been done in this respect at home and abroad, especially on the tension of cone drogue and tail buoy. No one knows the effect of the cone drogue to the streamer, so the workers can only determine the quantity and method of the cone drogue by testing and calculation to ensure efficiently and safely.