【摘要】 页岩气是非常规气勘探开发的重要领域,并在美国取得了巨大成功。页岩气以吸附或游离状态为主要存在形式,形成于暗色高碳泥质烃源岩中。页岩气藏是典型的非常规天然气藏,它具有低渗透、生产周期长和开采寿命长的特点。页岩气作为一种高效、清洁的能源,其中蕴藏着巨大的经济和环境效益。美国页岩气开发采用了先进的压裂增产技术,页岩气产量逐年提高。水力压裂技术的改进主要是指各种压裂技术的涌现,如分段压裂技术、重复压裂技术、同步压裂技术和清水压裂技术等。更多还原

【Abstract】 The exploration of shale gas is an important field of the non-conventional gas exploration and it has achieved great success in USA.Shale gas mainly accumulates in adsorbed and free phases.The shale gas reservoir formed in dark-colored high-carboniferous argillaceous hydrocarbon source rocks.Shale gas reservoir is a typical unconventional natural gas reservoir,which has low permeability,long production cycle and exploitation life.As a kind of effective and clean energy,shale gas may bring us tremendous economic and environmental benefits.As the United States is now using advanced fracture stimulation technology mining shale gas,the shale gas production increases every year.As for the hydraulic fracturing technology,its modification mainly refers to the emergence of a variety of fracturing technologies,such as multi-stage hydraulic fracturing,refracturing,simultaneous fracturing and slickwater fracturing.更多还原