| 摘要 |
A method and apparatus are described for logging an open hole well, or the like, for the purpose of determining the presence of a given constituent in the various substrata and for providing means and method for determining the degree of presence of the constituent in a given formation where it has been located. A probe capable of being lowered into a bore hole includes a color video camera, a particular form of light source, apparatus for carrying and issuing a spray of cleaning substance and apparatus for carrying and issuing a chemical which facilitates the analysis of the degree of presence of the constituent. The probe is lowered to the bottom of the bore hole and then raised to a desired level. A cleaning jet sprays the surface to be inspected. The cleaned surface is then illustrated with light having a frequency in a predetermined frequency range and the reflected light is directed to the camera. The video signal is conducted to the surface where it is displayed. Examination of the color content of the video display allows for determination of the presence or absence of the constituent in question. Should it be determined that this constituent is present the formation undergoing examination is sprayed with a colorant which, when illuminated, provides a reflected light, the intensity of the color produced by the reflected light is in correspondence with the degree of presence of the constituent in the formation being examined.
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