Shale Gas

Shale gas is natural gas trapped within shale rock formations, extracted through hydraulic fracturing (fracking) and horizontal drilling techniques. The gas is held in tiny pores and fractures within fine-grained sedimentary rock, requiring specialised extraction methods that differ from conventional gas production. Shale gas has transformed global energy markets since the early 2000s, particularly in the United States, where it enabled a dramatic increase in domestic gas production and reduced energy import dependence. The resource is found in sedimentary basins worldwide, with significant deposits identified in North America, China, Argentina and parts of Africa. In South Africa, the Karoo Basin has been identified as holding potentially substantial shale gas reserves, though exploration remains contentious due to environmental concerns about water use, seismic activity and groundwater contamination. Proponents argue that shale gas could enhance energy security, provide a cleaner alternative to coal and support economic development. Opponents highlight the water-intensive nature of fracking in arid regions, the risk of methane emissions and the potential conflict with agricultural land use. The economic viability of shale gas extraction depends on factors including gas prices, drilling costs, regulatory frameworks and the availability of water and infrastructure. As countries pursue energy transition strategies, shale gas is often positioned as a bridge fuel between coal and renewable energy sources, though its role remains debated within climate policy discussions.