A standard well for demarcating logging instrument

The utility model discloses a standard well for demarcating logging instrument, include and fill the obturator that forms with the rock stratum substituent, the pre -buried well pipeline that is used for simulating the well of keeping flat that sets firmly in the obturator, installing port that the preceding port of well pipeline and/or back port are packed into for the instrument that supplies to await measuring to the pre -buried target model who is used for simulating the detection of a target that sets firmly still in the obturator, target model are in the left of well pipeline and/or right -hand. The vertical distance that will await measuring between instrument and the target model converts probe distance to, will need not like this to come pre -buried target model at the darker dell of subaerial excavation, only needs to increase the horizontal width of obturator, ensures target model with the mode of widening the obturator width promptly and awaits measuring distance between the instrument to reduced