[套管井]
Evil-suppressing Incident
套管井
casing well
cased well
casing hole
cased hole
cased calibration hole
Cased-hole Resistivity Measurement
Casedhole
CH
ultrasonic wave
管井井点降水
Dewatering and drainage design by pipe well points
dewatering and drainage design by pipe well-points
管井降水井
pipe well for lower water
管井降水
tube well dewatering
lowering water by tube well
tubular well subway dewatering
reduce tubular well water level