Measuring and testing – Borehole or drilling – Downhole test
Patent
1978-03-23
1981-12-22
Myracle, Jerry W.
Measuring and testing
Borehole or drilling
Downhole test
250256, E21B 4900
Patent
active
RE0308277
ABSTRACT:
Process for determining characteristics of the geological formations traversed by a borehole, making use of a sonde by means of which the intensity of the .gamma. rays naturally radiated from the formations is measured, both longitudinal and transversal acoustic waves are transmitted to the formations, their travel time and their attenuation between two receivers placed in contact with the formations are measured and by combination of the so-obtained values a resulting value is elaborated which is representative of one characteristic of the surveyed formations.
REFERENCES:
patent: Re24226 (1956-10-01), Fearon
patent: 2760078 (1956-08-01), Youmans
patent: 3521064 (1970-07-01), Moran et al.
Bard Jean-Francois
Morlier Pierre
Pelet Regis
Sarda Jean-Paul
Institut Francais du Pe'trole
Myracle Jerry W.
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