Method of marine seismic exploration utilizing vertically and horizontally offset streamers

A method for acquiring a seismic data set, the seismic data set being capable of providing information regarding the strata which underlies the body of water where the seismic data set is acquired, the method comprising the step of:

• towing a quasi over-under array having streamers, wherein adjacent said streamers are offset latterly and offset vertically from one another;
• acquiring seismic data exhibiting a repetitive pattern in a cross-line direction as a function of a variation of said streamer depth;
• placing said seismic data into gathers based on common in-line position;
• sorting said gathers according to said data's cross-line position;
• filtering the seismic data using a filter that removes the larger part of a cross-line trace to trace variation caused by different delays between receiver signal ghosts pertaining to said traces;
• and
• removing said filtered data from said gathers for further seismic processing.

A method for acquiring a seismic data set, the seismic data set being capable of providing information regarding the strata which underlies the body of water where the seismic data set is acquired, the method comprising the steps of:

• towing a quasi over-under array having streamers, wherein the sequence of said streamers across a survey, viewed in the cross-line direction, form a repeating V-pattern;
• acquiring seismic data exhibiting a repetitive pattern in a cross-line direction as a function of a variation of said streamer depth;
• placing said seismic data into gathers based on common offset and common in-line position;
• sorting said gathers according to said data's cross-line position;
• filtering the seismic data using a filter that removes the larger part of a cross-line trace to trace variation caused by different delays between receiver signal ghosts pertaining to said traces;
• and
• removing said filtered data from said gathers for further seismic processing.

A method for acquiring a seismic data set, the seismic data set being capable of providing information regarding the strata which underlies the body of water where the seismic data set is acquired, the method comprising the steps of:

• towing a quasi over-under array having streamers, wherein the sequence of said streamers across a survey, viewed in the cross-line direction, form a repeating V-pattern;
• acquiring seismic data exhibiting a repetitive pattern in a cross-line direction as a function of a variation of said streamer depth;
• placing said seismic data into gathers based on common in-line position;
• sorting said gathers according to said data's cross-line position;
• filtering the seismic data using a filter that removes the larger part of a cross-line trace to trace variation caused by different delays between receiver signal ghosts pertaining to said traces;
• and
• removing said filtered data from said gathers for further seismic processing.