BOREHOLE OIL AND GAS GEOCHEMICAL EXPLORATION TECHNIQUE AND ITS APPLICATION

The vertical distribution of hydrocarbon geochemical indicators, detected with rock cuttings or cores, depends upon the vertical micro-migration of hydrocarbon and the distribution pattern of the geochemical indicators in the system of source rocks, reservoir rocks and cap rocks, according to the principles of vertical hydrocarbon migration. Borehole geochemical exploration technique aims to detect the concentrations of various phases of hydrocarbon indicators so as to establish a geochemical profile along the borehole. The results could be used as a tool for oil and gas exploration.