井下放电处理油层技术研究与应用

电脉冲工作原理为大容量高电压储能并控制释放产生电爆炸对地层激发周期性压力波和强的电磁场,并产生空化作用,解除油层近井地带污染,造成微裂缝,改善油层近井地带渗滤性。通过现场试验,证明了井下放电技术可以有效地解堵增产增注。而且此技术投资少,一次到位,见效快,工艺简单,经济效益好。

STUDY AND APPLICATION OF FORMATION STIMULATION TECHNIQUE USING DOWNHOLE ELECTRIC DISCHARGE

The electrical impulse caused by discharge of high tension current may pro-duce period pressure wave and strong electromagnetic field, and cause cavitation. These re-sults may remove near wellbore formation plugging,produce rnicrofracture,and improve per-meability of near wellbore formation. Field test results indicate that this technique can re-move effectively formation plugging,and then increase productivity or injection. This tech-nique has the advantages of small investment,quick yield results,high success ratio,simple. operation and good benefit.