Equipment and methods for operating geophysical bottom stations

摘要

An equipment complex for deploying and recovering marine geophysical seismic or electric-survey bottom stations is mounted on a ship. The complex includes—a powered capstan, —rotatable turntables and rolls, —load-bearing units connected to the bottom stations by various fasten means and capable of winding onto the capstan and turntables, a work platform supporting a bottom station placed thereon, —an indicator for registration of the bottom stations' coordinates, mounted on the platform, —a limit switch mounted on the platform, switching ON when the bottom station is placed on the work platform, and OFF when it's removed therefrom providing for operation of the indicator. The complex may include floating buoys, damping loads, and halyards for deploying the stations. Methods for deploying and recovering the bottom stations using the equipment complex are described. Some recovering methods contemplate winding the load-bearing units onto the capstan, while switching the turntables for each subsequent load-bearing unit.

主权项

1. An equipment complex for deploying and recovering a number of marine geophysical bottom stations; said equipment complex is mounted on a ship; said equipment complex comprising:
a capstan; at least two rotatable turntables; at least two rotatable rolls; a number of load-bearing units capable of winding and unwinding on the capstan and on the turntables, and capable of being guided by the rolls; at least one work platform capable of supporting one of said bottom stations placed thereon; an indicator for determination and registration of coordinates of said bottom stations, said indicator is mounted on said work platform; and a limit switch mounted on said work platform, wherein said limit switch has an ON position when the bottom station is placed on the work platform, and an OFF position when the bottom station is removed from the work platform.