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油、气田增加开采量所使用的水力压裂,其方法是对钻井周围储油层施加高流体压力,使岩层开裂成缝,裂缝向四周扩展(主要为垂直裂缝),随之在裂缝中充填砂粒或其他粒状物质藉以支撑裂缝以便改善井孔与岩层间油(气)的流通,达到增加产量的目的。
Hydraulic fracturing used in oil and gas fields to increase the production of the fractures is accomplished by applying high fluid pressure to the reservoirs surrounding the wellbore, cracking the rock into a seam that expands all around (mainly vertical fractures), filling the fractures with sand Or other granular material to support the crack in order to improve the circulation of oil and gas between the borehole and rock formation, so as to achieve the purpose of increasing output.