【摘要】 复合射孔 -防砂技术是把油井的射孔和防砂两项作业结合在一起 ,利用射孔弹装药爆轰和助推药爆燃的能量 ,将在油层中射孔和把防砂材料推入射流打出孔道以形成永久性防砂塞两项作业在千分之几秒的瞬间完成 ,省略了重复起下管柱、下防砂筛管等作为 ,使完井工艺大为减化 ,同时节省作业费用 30 %～ 5 0 %。该技术具有早期防砂、原地防砂等特点 ,适用于多种出砂地层、各种苛刻的施工条件 (如高温热采 )更多还原

【Abstract】 The perforation-sand proof composite technique is using the energy from perforating cartridge explosion and assiatant propellant deflagration so that it can be perforated in formation and impel sand proof material into the perforated hole to form permanent sand proof plug in several milliseconds.The technique is simple,economicl and convenient in manipulation.It also possesses characteristics of nonage sand proof,former sand proof,adapting manifold arenaceous stratum and rigorous working condition. [更多还原