摘要
为了解决煤层气井开发过程中煤层污染造成产量下降的问题,对煤层气井采用水力喷射径向钻孔技术进行解堵。水力喷射径向钻孔技术在阜新刘家区L30井应用,对该井太下、中间煤层进行水力喷射,共喷射14支,总长1065.1m,日产量由喷射前的200m3上升到2400m3,结果表明该项技术具有超深射孔能力,可以解决近井带污染,有效沟通渗流通道,实现煤储层的解吸-扩散-渗流,以达到煤层气井增产的目的。该成果为煤层气开发提供了一项新的增产措施。
To resolve coal bed pollution that will lead to production drawdown, radial hydraulic jet technic is adopted to CBM well.This technic is applied to well L30 in Fuxin Liujia area, and there are 14 branches with a total length of 1065.1 m in Seam Zhongjian and Lower-Taiping jetted in well L30. The gas rate is improved from previous 200m3/d to 2400m3/d,the successful application of this technic indicates that it has theability of jetting ultra deep bore,and can resolve immediate vicinity borehole pollution,communicate flow passageway effectively and realize desorption-flow-dispersion so that production will be increased.This technic has brought a new stimulation for CBM development.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2010年第1期32-35,共4页
Journal of Liaoning Technical University (Natural Science)
基金
中国石油天然气公司长城钻探工程基金资助项目(2007)
关键词
水力喷射技术
刘家区
煤层气开发
hydraulic jet drilling technique
Liujia area
CBM development
