Utilizing the radiometric and seismic methods for hydrocarbons prospecting in the Rancheria sub-basin in Colombia

Methods for the Geophysical Exploration and Sustainable Utilisation of Coalbed Methane Resources in Abandoned Mines of Shanxi, China

“…Radiometric exploration monitors the radioactive intensity generated during the decay of natural underground radioactive substances to explore geological structures. The most widely used technique is the radon measurement method, which uses activated carbon [14] The mining of an underground coal seam forms a goaf, which fractures the overlying rock layers to create a fracture zone. These conditions often prompt the transfer of moisture and gas from high-stress areas to low-stress areas within the rock mass, which alters the underground migration and accumulation of gas and water.…”

“…Geophysical exploration methods are attractive for application in abandoned coal mines owing to their low cost and non-destructive detection of deep layers, and they are advantageous for characterising the geological structure, goaf distribution, and coalbed methane reservoirs of coal mines. Techniques such as the seismic method [3,4], electromagnetic method [5][6][7], high-density electrical method [8,9], induced polarization method [10], micromotion method [11,12], and radioactive detection method [13,14] have been used to accurately survey mined-out voids, water accumulation, and old workings. These methods can contribute not only to safe and efficient coal mining but also to the restoration and management of the mining environment, and they can be used to establish a geological foundation for the exploration and development of coalbed methane resources in abandoned mines [15,16].…”