A METHOD OF DETERMINING A PROPERTY OF A BULK FORMATION

摘要

- 17 Abstract The present disclosure provides a method of determining a density of a bulk formation that at least partially 5 surrounds a borehole. The method comprises providing a borehole in the bulk formation with at least one drill rod being positioned in the borehole. The drill rod comprises a first tube and a second tube that surrounds the first tube. The method further comprises inserting a measurement 10 tool into the first tube of the drill rod and moving the measurement tool within the first tube along the borehole. The method also comprises emitting radiation from the measurement tool through the first and second tubes into the bulk formation and detecting a radiation response from 15 the bulk formation through the first and second tubes. In addition, the method comprises determining the density of the bulk formation using the detected radiation response. 7395431_1 (GHMatters) P101139.AU.1 JMEAD 0n o 4- 00( C) /2C . ~ ~ ~ ~ / ./ . .. .. .. .. .. .. N . . . .. .. . . .. .. . . r42 -------------------