大斜度井、水平井再射孔起爆技术及应用

The propagated blasting technology and its application to re-perforation of highly deviated holes and horizontal holes.

水平井、大斜度井再射孔的技术难点在深度控制、初级起爆和夹层传爆,采用压力复合起爆器或特制筛管配合压力起爆器的起爆方法,可以保证再射孔时的初级有效起爆和施工安全,大夹层段采用增压装置和压力起爆器的配合结构,有效地保证全井井段射孔器的正常起爆。

The technical difficulties in re-perforating horizontal holes or highly deviated holes are depths control, primary detonations and interlayer propagated blasts. Choosing the detonating method of pressure compound initiator or tailored sieve tube coordinating with pressure initiator, effective primary explosion and construction security may be guaranteed. Adoption of the matching structure with boost device and pressure initiator at the thick interlayer section can effectively guarantee the normal detonation of perforating tools along the whole well.