Method and system for deployment of ocean bottom seismometers

摘要

Systems and methods for deployment and retrieval of ocean bottom seismic receivers. In some embodiments, the system includes a carrier containing receivers. The carrier can include a frame having a mounted structure (e.g., a movable carousel, movable conveyor, fixed parallel rails, or a barrel) for seating and releasing the receivers (e.g., axially stacked). The structure can facilitate delivering receivers to a discharge port on the frame. The system can include a discharge mechanism for removing receivers from the carrier. In some embodiments, the method includes loading a carrier with receivers, transporting the carrier from a surface vessel to a position adjacent the seabed, and using an ROV to remove receivers from the carrier and place the receivers on the seabed. In some embodiments, an ROV adjacent the seabed engages a deployment line that guides receivers from the vessel down to the ROV for “on-time” delivery and placement on the seabed.

主权项

1. A system to facilitate deployment of ocean bottom seismic (OBS) units secured to a deployment line at spaced intervals, comprising:
a vehicle configured to travel through an aqueous medium; a guide, coupled to a side of the vehicle, configured to travel through the aqueous medium and control the deployment line, the guide comprising:
a first member coupled to the side of the vehicle;a second member coupled to the side of the vehicle and opposite the first member, wherein the first member and the second member are configured to control the deployment line threaded between the first member and the second member; anda plate, coupled to the side of the vehicle, positioned between the first member and the second member to contact an OBS unit to direct the OBS unit to contact a seabed as the deployment line passes through the guide.