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许多新开发的油气藏大都属于低渗透储层,因而低渗和特低渗储层的增产会面临更多的技术挑战。缝内爆炸跟“井底爆炸”、“核爆炸”、“高能气体压裂”等增产技术不同,它的原理是先生成一个水力裂缝,把固体炸药送入裂缝深处,然后点燃炸药,在主裂缝附近生成压碎带或剪切裂缝,同时保持井筒完好无损,达到提高油井产能的目的。对于复杂的致密气藏,特别是因采用常规水力压裂生成多条裂缝或剪切裂缝而造成支撑剂充填困难的储层,这种技术有着无可替代的优势。
Many of the newly developed reservoirs are mostly low permeability reservoirs, thus increasing the production of low and low permeability reservoirs faces more technical challenges. The internal explosion is different from the stimulation technologies such as “bottomhole explosion”, “nuclear explosion”, “high energy gas fracturing” and other production technologies. The principle is that a hydraulic fracturing device should be used to send solid explosives deep into the fracture , Then ignite the explosives to generate crushed zones or shear fractures near the main fractures while maintaining the wellbores intact and achieving the goal of increasing well productivity. This technique has irreplaceable advantages for complex and tight gas reservoirs, especially those reservoirs with difficult proppant filling due to multiple fractures or shear fractures by conventional hydraulic fracturing.