Rigid-stem lead-in method and system
AssigneePGS Geophysical AS
InventorRune Sindre Voldsbekk
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Abstract
Disclosed are methods and systems for using a rigid-stem lead-in assembly comprising a plurality of interconnected rigid stems in a marine geophysical survey. An embodiment discloses a method of towing a survey device from a survey vessel, comprising: coupling the survey device to the survey vessel with a lead-in comprising a rigid-stem lead-in assembly, the rigid-stem lead-in assembly comprising a plurality of rigid stems that are interconnected and each comprise a stem both defining one or more interior chambers; and towing the survey device through a body of water. Also disclosed are marine geophysical survey methods and marine survey systems.
Claims22
A method of towing a survey device from a survey vessel, comprising:
- coupling the survey device to the survey vessel with a lead-in comprising a rigid-stem lead-in assembly, the rigid-stem lead-in assembly comprising a plurality of rigid stems that are interconnected and each comprise a stem body defining one or more interior chambers;
- and
- towing the survey device through a body of water.
The method of claim7, wherein the deploying comprises sliding a sleeve on the stem body to release the wing.
A marine geophysical survey method, comprising:
- towing at least one sensor streamer through a body of water, the sensor streamer coupled to a survey vessel with one or more rigid-stem lead-in assemblies each comprising a plurality of rigidly interconnected rigid stems, the rigid stems each comprising a stem body defining one or more interior chambers;
- and
- generating signals with geophysical sensors located on the sensor streamer in response to energy emitted from one or more energy sources.
A marine survey system, comprising:
- a survey vessel;
- a lead-in coupled to the survey vessel, wherein the lead-in comprises a rigid-stem assembly the rigid-stem lead-in assembly comprising a plurality of rigid stems that are interconnected, each of the rigid stems comprising a stem body defining one or more interior chambers;
- and
- a survey device coupled to the survey vessel by the lead-in.
Dependencies are inferred from the claim text.