Abstract: An improved system for designing seismic surveys wherein the density and areal size of the seismic survey components (e.g., sources or receivers) are selected based on a plurality of calculated templates of the components that are generated using a mapping function.

Abstract: A non-contact vibrometer is employed to measure seismic energy imparted to the earth by a land vibrator. The non-contact vibrometer can be a laser vibrometer operable to measure the motion of a baseplate of the land vibrator. A computing device can be used to record both the imparted seismic energy detected by the non-contact vibrometer and reflected seismic energy sensed with geophones.

Abstract: A non-contact vibrometer is employed to measure seismic energy imparted to the earth by a land vibrator.

Abstract: In accordance with the present invention, a method is disclosed herein which is primarily designed for use in improving the seismic data collection process through the use of hybrid gathers. The instant invention is suitable for application either in the field during seismic acquisition as part of the process or back at the main processing center, although it will probably be of greatest use in the field. That being said, the computational efficiency of the instant method and its ability to work effectively with low fold seismic data sets argue that it would be most useful in the field. By timely application of the instant method it is possible to improve or optimize the selection of acquisition parameters such as geophone spacing, line layouts, shot locations, instrument filters, etc., while the data are being acquired.

Abstract: For a downhole seismic tool, a securing mechanism which uses an arm which swings from the side of tool and into contact with the earth, causing the tool also to come to rest against the opposite side of the borehole on at least one pair of lugs protruding from the opposite side of the tool.