【摘要】 采用电缆传输爆炸式声源发生装置进行井下爆炸作业,可为微地震检测提供一种有效的人工震源。针对超高温、超高压和超深井(即"三超井")微地震监测作业,常规声源发生器存在耐温、耐压以及井下可能掉物等不足。为此研制了一种新型声源发生装置。该装置由声源发生器和保护外套组成,供电激发声源发生器,产生的爆轰能量通过保护套上均匀分布的孔眼有效传递至井筒和地层。声源发生装置一方面能够提供有效的爆炸源,另一方面不伤及套管且能够有效地防止井下掉物。同时应用研究了相关爆炸物品性能和入井管串设计,选择了超高温炸药HNS,在入井管串中引入安全防爆装置。该声源发生装置在塔里木油田共应用8井次,成功率100%,获得了良好的应用效果。更多还原

【Abstract】 Down-hole explosion involving acoustic source generating device of cable-conveyed explosions may provide micro-seismic monitoring with an effective artificial seismic source. Applied in micro-seismic monitoring operations in super-high temperature,super-high pressure and super-deep wells( i. e. "triple-super wells"),conventional acoustic generators have disadvantages in temperature and pressure resistance and possibility of lost fishes. To solve these problems,an innovative acoustic source generating device has been developed. The device includes acoustic generator and protective case. Upon connection of power supply,acoustic generator can be triggered to generate detonation energy,which can be transmitted into borehole and formation through evenly distributed holes on the protective case. In addition to serving as an effective explosion source,the acoustic source generating device can protect casings against damages and eliminate possibility of lost fishes. With consideration to research results related to explosives and pipe strings,HNS explosive with super-high temperature can be used. In addition,explosion-proof safety devices are deployed in the pipe string. This innovative device has been used in 8 operations in Tarim Oilfield with success rate of 100%,showing its good performance.更多还原