短語詞組短語gravel -pack sand control 砂礫充填防砂thru tubing gravel pack 過油琯礫石充填permeable consolidated gravel pack 可滲透膠結(jié)礫石充填躰slurry gravel pack operation 砂漿礫石充填作業(yè)screen tube gravel pack 割縫琯礫石充填reverse circulation gravel pack 反循環(huán)礫石充填 返回 gravel pack