IN-SITU DETECTION AND ANALYSIS OF COAL BED METHANE FORMATIONS

摘要

A measuring system for in-situ measurements down a well by a spectrometer (4 ) is provided. The spectrometer (4) includes a radiation source (5) and a detector (6). A probe is optically connected to the spectrometer (4) and includes an optical pathway (7) for transmission of a radiation from the radiation source (5) and at least a second optical pathway for transmission of a characteristic radiation from a sample to the detector (6). A positioner i s provided to position the probe near a side surface (11) of the borehole (3) and to optically couple the optical pathways to the side surface (11), where the probe is traversable up and down the well by way of a guide operatively connected to the probe and to a fixed location at the wellhead. By use of th e apparautus and method a concentration of methane or other substance of interest is obtained, and thereby, a potential production of a coal bed methane formation is obtained.