Acquiring azimuth rich seismic data in the marine environment using a regular sparse pattern of continuously curved sail lines

摘要

A method for determining a sail plan for a towed-array marine seismic survey includes: dividing a survey area into a regular grid of tiles; and identifying a subset of the tiles as nodes around which continuously curved sail lines are defined. The nodes define regular pattern further including: a first subpattern of nodes; and a second subpattern of nodes offset from the first subpattern. A method for conducting a towed array marine survey includes: traversing a plurality of continuously curved sail lines across a survey area, each sail line being relative to a node; and acquiring seismic data while traversing the continuously curved sail lines. The set of nodes defining a regular pattern further including: a first subpattern of nodes; and a second subpattern of nodes offset from the first subpattern.

主权项

1. A method for designing a survey, comprising:
dividing a survey area into a grid of tiles; positioning a first set of nodes around which continuously curved sail lines are defined within a first subset of the tiles; and positioning a second set of nodes around which continuously curved sail lines are defined within a second subset of the tiles such that respective nodes in the second set of nodes are offset from respective nodes in the first set of nodes by a first increment in a first direction, wherein the respective nodes in the second set of nodes are further offset from the respective nodes in the first set of nodes by a second increment in a second direction.