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Book Chapter

Practical Problems And Special Situations

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Published:
January 01, 1994

Abstract

There are many practical considerations in field design, some of which do not yield to formulation as easily as the basic sampling parameters. The influence of the lithology of the target on line orientation and location has been noted. The equipment available at the time of the survey, costs of the survey, environmental considerations, and area-dependent scheduling are all part of the design of the survey. Information on the survey area in the form of maps, seismic data, well logs, geology, scouting, and objectives must be gathered prior to the design.

Equally important is to involve all the departments in the survey design and determine if there is someone in the company experienced in the area. Field tests and computer model tests are also a normal part of the design sequence. Marshaling a crew may involve personnel with special skills such as helicopter pilots, special mechanics, and equipment unique to the particular area. Situations not found in the information-gathering stage that require modification of the design will frequently arise when the crew takes the field.

These factors will be discussed subsequently as part of the 3-D design sequence but apply to 2-D surveys as well. Much of the technology and practical aspects are found in company proprietary manuals and not in published form.

One of the problems for 2-D surveys provided experience that proved to be useful in designing 3-D surveys. Field conditions sometimes prevented the layout of lines in the desired linear form. The lines were crooked and violated

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Contents

Society of Exploration Geophysicists Geophysical References Series

Designing Seismic Surveys in Two and Three Dimensions

Dale G. Stone
Dale G. Stone
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Charles A. Meeder
Charles A. Meeder
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Society of Exploration Geophysicists
Volume
5
ISBN electronic:
9781560802730
Publication date:
January 01, 1994

GeoRef

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