摘要
水力压裂技术作为气井增产的主要措施之一,具有见效快、增产效果显著、有效期长等特点,已广泛应用在低渗油气田的开发中。文中针对气井以简化压裂施工工序、降低作业成本为目的,对适用于射孔—压裂联作的射孔工艺技术进行了研究。通过对目前射孔工艺的调研分析,筛选出了适用于联作的优化射孔工艺,并提出了适用条件,达到了射孔后可在不动管柱的情况下直接进行加砂压裂改造的目的。现场实际应用取得了显著效果,不但缩短了单井开发周期,还节约了施工作业成本、保护了储层,具有广泛推广的价值。
As one of the major stimulation treatments, the hydraulic fracturing, which has been applied to development of low-permeability gas fields, is featured by faster results, significant stimulation effects and long validity. With the purposes of reducing fracturing procedure and operation cost for gas wells, this paper studied the perforating technology combining perforation and fracturing. By investigating on present perforating technologies, the optimum one has been chosen. Sand fracturing can be carried on directly after perforating without pulling string by means of this optimum technology. Field application obtains an obvious effect. The technology not only decreases the period of single-well development, but also saves the operation cost. Furthermore, it may protect reservoirs.
出处
《天然气勘探与开发》
2007年第4期60-63,共4页
Natural Gas Exploration and Development
关键词
气井
射孔
水力压裂
联作
不动管柱压裂
gas well, perforation, hydraulic fracturing, combining operation, fracturing without pulling string