油气井化学反应气动力深穿透热解堵试验研究

高能气体压裂是解决长庆低渗透油气层解堵的一项简便易行的技术手段.由于火药燃烧随压力增高呈指数增加趋势,装药量受到极大限制.火药燃烧产生大量的CO气体也是一个潜在的危险因素.国外特别是乌克兰等国家都在研究一种新型化学反应气动力热解堵的新技术.根据国外研究的思路,笔者用铝粉、NaOH、NH4NO3甲醛等数种化学物质组配进行了实验室试验研究.以期得到一种新的化学反应气动力热解堵的技术途径.

Experiment Study on Deep Penetration and Plugging Removal of Oil and Gas Wells With Exothermic Chemical Reaction

High energy gas fracturing technology is a simple way for plugging removal of low permeability oil and gas layer in Changqing oil field.Because the velocity of propellant combustion rapidly increases with increasing of the ambient pressure,amount of propellant should be restricted excessively.The propellant combustion produce a lot of CO gas,which can form potential danger.A plugging removal technique with exothermic chemical reaction has been developed at abroad,especially Ukraine.In this paper,based on foreign researches,experiment study on plugging removal technique with aluminium powder,NaOH,NH4NO3 and methanal was carried out.