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PROBLEMS AND RESULTS WITH REFRACTION SEISMICS IN BOREHOLES
Author(s) -
HOLSTE W.
Publication year - 1959
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1959.tb01465.x
Subject(s) - geology , borehole , salt dome , stratification (seeds) , economic geology , environmental geology , hydrogeology , regional geology , geophysics , seismic refraction , seismology , geomorphology , metamorphic petrology , geotechnical engineering , seed dormancy , botany , germination , dormancy , biology
A bstract Recently, quite good determinations of interfaces have been made by means of seismic well surveys. These were carried out for various oil companies in Northwest Germany, especially on salt‐domes, and in Southern Germany, and in the area of the Upper Rhine Valley. It was the purpose to determine the configuration and position of salt‐flanks and important planes of stratification in the neighbourhood of deep wells, and thus to reduce the risk of expensive wells. For the delineation of the boundary surfaces the method described by G ardner in “Geophysics 1949” was applied. The problems arising and the results obtained are discussed in connection with some interesting examples. From them we see, above all, that a knowledge as precise as possible of the seismic velocities of all media involved in the measurement is very important. A good idea of the general stratification in the area of deep wells seismically surveyed will make possible a rational and adequate planning of the survey program and will facilitate the interpretation.