초록 ▼

An optical head (12) is rotated while a sonde (11) is moved up or down within a bore hole (22), and a beam of light from a light source (22) is projected toward the wall of the bore hole (22) via a lens (21), slit (22), half-mirror (19), mirror (15) and lens (14). Light reflected from the bore hole

An optical head (12) is rotated while a sonde (11) is moved up or down within a bore hole (22), and a beam of light from a light source (22) is projected toward the wall of the bore hole (22) via a lens (21), slit (22), half-mirror (19), mirror (15) and lens (14). Light reflected from the bore hole wall is extracted from the half-mirror (19) via a slit (17) and a photoelectric transducer (18) so that the bore hole wall may be continuously observed. By separating the reflected light into spectral components and processing them, color tone logging and other observations can be performed. The orientation of the sonde (11) is sensed by an azimuth finder (23) and rotation gauge (24), and the inclination of the sonde (11) is sensed by a dipmeter (25). Displacement of the sonde accompanying each unit length of up-or-down movement of the sonde (11) is calculated and the displacements are integrated to obtain the position being observed by the sonde.

대표청구항 ▼

A method of observing a wall in a bore hole by using a sonde supported for movement up or down within the bore hole, comprising the steps of: providing a light source within the sonde; projecting a beam of light toward the bore hole wall from said light source within the sonde; measuring the positio

A method of observing a wall in a bore hole by using a sonde supported for movement up or down within the bore hole, comprising the steps of: providing a light source within the sonde; projecting a beam of light toward the bore hole wall from said light source within the sonde; measuring the position of the sonde relative to the bore hole wall irradiated by the beam of light; receiving and separating light reflected from the bore hole wall into spectra, and converting the spectra into electric signals, and repeating said steps of projecting said beam of light on adjacent portions of said bore hole wall, receiving and separating light reflected from said adjacent portions of said bore hole wall into spectra and converting said spectra into electric signals while measuring the position of the sonde relative to each said adjacent port ion of said bore hole wall, correlating the electric signals indicative of said light spectra at said adjacent portions of said bore hole wall with the position of said sonde relative to each said adjacent portion of said bore hole wall, and providing an integrated display indicative of said light spectra detected at each of said adjacent portions of said bore hole wall.