Summary of hydraulic fracturing technology in shale gas development
Summary of hydraulic fracturing technology in shale gas development
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作者：
Zhang Qin
世界页岩气资源丰富，但由于其渗透率极低，至今尚未得到开发，水力压裂技术作为页岩气开发的核心技术之一，目前被广泛应用于页岩气储层改造增产。本文介绍了水力压裂施工，包括压裂设计、裂缝监测、压裂液配制和添加剂选择等。以及多级压裂、水力压裂、同时压裂、水力喷射压裂等压裂技术，介绍了美国在页岩气开发中使用和试验的压裂技术，结合国外页岩气开发实例和国内压裂技术，分析了各种压裂技术的适用性，认为：水力压裂适合我国现阶段页岩气的开发，水力多级压裂可用于厚层页岩气储层，同时压裂是页岩气大规模开发的必要条件。
Shale gas resource in the world is rich,but it hasn't been developed at so far because of extremely low permeability.Hydraulic fracturing technology,as one of the core technologies in shale gas development,is currently widely used in shale reservoirs reconstruction to increase production.This paper introduces hydraulic fracturing operation including fracturing design,fracture monitoring,fracturing fluids preparation and additives option,as well as fracturing technology including multi-stage fracturing,water fracturing,simultaneous fracturing,hydrojet fracturing,refracturing and so on in use and experiment in shale gas development in the USA.It analyzes the applicability of various fracturing techniques on the base of shale gas development case in foreign country and domestic fracturing technology.This paper holds that water fracturing is suited for China shale gas development at this stage,and water multistage fracturing could be used in thick shale reservoirs.Simultaneous fracturing is necessary of the large-scale shale gas development.