Method and installation of the study of surveys gravimetric

摘要

The invention relates to studies gravimetric surveys. / p & & p & it relates to the determination of the density of the underground formations, completed with the aid of a tool which comprises a gravimeter 10 and 22 of a pair of pressure transducers 20, 21. The tool is moves successively and the pressure measurements and gravimetric are taken at several locations. The pressure measurements allow a very precise determination of the distance covered, and thus a very precise determination of the density of the formations. / p & & p & application to gravimetric studies for the determination of the content of oil residual of the underground formations.