oil and gasexplorationsverfahren and arrangement.

摘要

Continuous core samples are obtained from along the length of a wellbore. Discrete samples are obtained from the continuous core samples at selected intervals so as to be representative of the formation lithologies transversed by the wellbore along its length. The samples can then be processed at the wellsite with a transportable laboratory so as to obtain measures of a plurality of selected physical properties of the subterranean formations representative of their in-situ condition. An inverse log of each physical property as a function of depth can be prepared with which explorationists can evaluate geophysical survey data for oil and gas potential. Additionally, inverse logs of one or more of the physical properties can be used to perform basis analyses. When used for basis analysis, the physical properties of each inverse log can be used to calibrate geophysical survey data of the basin at one or more wellbore sites within the basin from which the inverse logs were obtained. IMAGE