formation density logging的意思|示意

In this paper, the stratigraohic volume density and hydrogen index gained from the information of density-neutron logging are respectively compared with both the low-limit values of gas formation.

本文从密度和中子测井信息中提取的地层体积密度及含氢指数，分别同气层体积密度及含氢指数的下限值作比较，前者小于后者，直观指示为气层。

Lithology density logging method can measure the density and PE value of the formation at the same time, so it has been widely used in the oilfield.

岩性密度是同时测量地层密度和岩性的测井方法，目前在油田得到广泛推广。