被砾石与地层砂混合物充填的射孔孔道
gravelsand filled perforation tunnel
填满砾石的射孔孔道
gravel packed perforation tunnel
淤塞的射孔孔道
filled perforation tunnel
多孔射孔穿透特性
multishot perforation penetration performance
单孔射孔穿透试验
single-perforation penetration test
干净等径射孔孔眼
clean uniform perforation
射孔孔眼外砾石充填
outside perforation packing